KR102579342B1 - Horizontal line driver and display device including the same - Google Patents

Abstract

The horizontal line driver provides scan signals to the first to jth scan lines belonging to the first side display area located on the upper side of the display panel in the second direction, is located on one side of the display panel in the first direction, and First to jth scan signal output blocks each including an output buffer, and providing scan signals to j+1th to kth scan lines belonging to the first front display area including curved edges in the second direction. and j+1 to kth scan signal output blocks, which are located on one side of the display panel in the first direction and each include a second output buffer, and second scan signal output blocks that do not include curved edges in the second direction. The k+1 to mth scans provide scan signals to the k+1th to mth scan lines belonging to the front display area, are located on one side of the display panel in the first direction, and each include a third output buffer. Contains signal output blocks. At this time, the width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the second front display area. It is smaller than the width in the first direction, and the width of the first front display area in the first direction increases as it approaches the second front display area.

Description

Horizontal line driver and display device including same {HORIZONTAL LINE DRIVER AND DISPLAY DEVICE INCLUDING THE SAME}

The present invention relates to a display device. More specifically, the present invention relates to a horizontal line driver (i.e., scan driver or light-emitting driver) that provides a horizontal signal (i.e., scan signal or light-emitting signal) to a display panel, and a display device including the same.

Generally, electronic devices (eg, smartphones, smart pads, etc.) include display devices to provide visual information to users. For example, a display device includes a display panel including pixel circuits, a scan driver providing a scan signal to the display panel, a data driver providing a data signal to the display panel, and a timing controller controlling the scan driver and data driver. can do. Additionally, when the display device is an organic light emitting display device, the display device may further include a light emitting driver that provides a light emitting signal to the display panel. At this time, since the scan line through which the scan signal is transmitted and the light emission line through which the light emission signal is transmitted extend in the first direction (i.e., horizontal direction) of the display panel, the scan driver and the light emission driver may be called horizontal line drivers. .

Recently, in order to improve the appearance of electronic devices and improve the convenience of using electronic devices, many manufacturers are manufacturing display panels of display devices included in electronic devices to include a front display area and a side display area. Additionally, many manufacturers are designing display panels so that the edges of the front display area of the display panel have a curved shape in order to make the appearance of electronic devices more elegant. In this case, when the side display area includes a first side display area located above the display panel in the second direction (i.e., vertical direction) and a second side display area located below the display panel in the second direction. , the front display area may include a first front display area including curved edges in a second direction and a second front display area not including curved edges in the second direction.

Accordingly, the width of the first and second side display areas in the first direction, the width of the first front display area in the first direction, and the width of the second front display area in the first direction are different from each other, and accordingly, , because the length of the horizontal line (i.e., scan line or emission line) of the first and second side display areas, the length of the horizontal line of the first front display area, and the length of the second front display area are different from each other, the first And the RC delay of the second side display areas, the RC delay of the first front display area, and the RC delay of the second front display area are also different from each other. As a result, even if the same data signal is applied to the first and second side display areas, the first front display area, and the second front display area, the first and second side display areas, the first front display area, and the second front display area Luminance unevenness may occur due to differences in RC delay between front display areas.

One object of the present invention is to provide a first side display area (i.e., upper side display area), a second side display area (i.e., lower side display area), a first front display area including curved corners, and a curved display area. Luminance due to the difference in RC delay between the first and second side display areas, the first front display area, and the second front display area when driving a display panel divided by a second front display area that does not include corners The goal is to provide a horizontal line driver that can prevent unevenness.

Another object of the present invention is to provide a display device (eg, an organic light emitting display device, a liquid crystal display device, etc.) including the horizontal line driver.

However, the purpose of the present invention is not limited to the above-mentioned purposes, and may be expanded in various ways without departing from the spirit and scope of the present invention.

To achieve one object of the present invention, a horizontal line driver according to embodiments of the present invention may provide a scan signal to a display panel including a plurality of pixel circuits connected to scan lines extending in a first direction. . The horizontal line driver operates on first to jth (where j is an integer greater than 1) scan lines belonging to the first side display area located on the upper side of the display panel in the second direction perpendicular to the first direction. First to jth scan signal output blocks that provide the scan signal, are located on one side of the display panel in the first direction, and each include a first output buffer, and have curved edges in the second direction. The scan signal is provided to j+1th to kth (where k is an integer greater than j+1) scan lines belonging to the first front display area, and the one side of the display panel in the first direction. j+1 to kth scan signal output blocks located in and each including a second output buffer, and k+1 to kth scan signal output blocks belonging to a second front display area that does not include the corners in the second direction. The k+ provides the scan signal to m (where m is an integer greater than k+1) scan lines, is located on one side of the display panel in the first direction, and each includes a third output buffer. It may include 1st to mth scan signal output blocks. At this time, the width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction may increase as it approaches the second front display area.

According to one embodiment, the length of the first to jth scan lines is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines is shorter than the length of the j+1th to kth scan lines. It is shorter than the length of the 1st to mth scan lines, and the length of the j+1th to kth scan lines may increase as it approaches the second front display area.

According to one embodiment, the size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the third output buffer. The size may increase as it approaches the second front display area.

According to one embodiment, the horizontal line driver provides the scan signal to m+1th to nth (where n is an integer greater than m+1)th scan lines belonging to the first front display area, and m+1 to nth scan signal output blocks located on one side of the display panel in the first direction and each including the second output buffer, and located on the lower side of the display panel in the second direction. The scan signal is provided to n+1 to pth (where p is an integer greater than n+1) scan lines belonging to the second side display area, and is positioned on one side of the display panel in the first direction. and may further include n+1th to pth scan signal output blocks each including the first output buffer. At this time, the width of the second side display area in the first direction may be smaller than the width of the first front display area in the first direction.

According to one embodiment, the length of the n+1th to pth scan lines is shorter than the length of the m+1th to nth scan lines, and the length of the m+1th to nth scan lines is shorter than the length of the m+1th to nth scan lines. It is shorter than the length of the k+1 to mth scan lines, and the length of the m+1 to nth scan lines may increase as it approaches the second front display area.

According to one embodiment, the size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the third output buffer. The size may increase as it approaches the second front display area.

To achieve one object of the present invention, a horizontal line driver according to embodiments of the present invention may provide a light emitting signal to a display panel including a plurality of pixel circuits connected to light emitting lines extending in a first direction. . The horizontal line driver operates on first to jth (where j is an integer greater than 1) light emitting lines belonging to the first side display area located on the upper side of the display panel in the second direction perpendicular to the first direction. First to jth light emitting signal output blocks that provide the light emitting signal, are located on one side of the display panel in the first direction, and each include a first output buffer, and have curved edges in the second direction. The light emitting signal is provided to j+1 to kth (where k is an integer greater than j+1) light emitting lines belonging to the first front display area, and the light emitting signal is provided to the one side of the display panel in the first direction. j+1 to kth light emitting signal output blocks each including a second output buffer, and k+1 to kth light emitting signal output blocks belonging to a second front display area that does not include the corners in the second direction. The k+ provides the light emitting signal to m (where m is an integer greater than k+1) light emitting lines, is located on one side of the display panel in the first direction, and each includes a third output buffer. It may include 1st to mth light emitting signal output blocks. At this time, the width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction may increase as it approaches the second front display area.

According to one embodiment, the length of the first to jth light emitting lines is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines is shorter than the k+th light emitting lines. It is shorter than the length of the 1st to mth light emitting lines, and the length of the j+1th to kth light emitting lines may increase as it approaches the second front display area.

According to one embodiment, the size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the third output buffer. The size may increase as it approaches the second front display area.

According to one embodiment, the horizontal line driver provides the light emitting signal to m+1th to nth (where n is an integer greater than m+1) light emitting lines belonging to the first front display area, m+1 to nth light emitting signal output blocks located on one side of the display panel in the first direction and each including the second output buffer, and located on the lower side of the display panel in the second direction. The light emitting signal is provided to n+1 to pth (where p is an integer greater than n+1) light emitting lines belonging to the second side display area, and is positioned on one side of the display panel in the first direction. and may further include n+1th to pth light emitting signal output blocks, each including the first output buffer. At this time, the width of the second side display area in the first direction may be smaller than the width of the first front display area in the first direction.

According to one embodiment, the length of the n+1th to pth light emitting lines is shorter than the length of the m+1th to nth light emitting lines, and the length of the m+1th to nth light emitting lines is shorter than the length of the m+1th to nth light emitting lines. It is shorter than the length of the k+1 to mth light emitting lines, and the length of the m+1th to nth light emitting lines may increase as it approaches the second front display area.

According to one embodiment, the size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the third output buffer. The size may increase as it approaches the second front display area.

In order to achieve another object of the present invention, a display device according to embodiments of the present invention includes a display panel including a plurality of pixel circuits, and providing a scan signal to the display panel through scan lines extending in a first direction. It may include a scan driver, a data driver that provides a data signal to the display panel through data lines extending in a second direction perpendicular to the first direction, and a timing controller that controls the scan driver and the data driver. . The scan driver provides the scan signal to first to jth (where j is an integer greater than 1) scan lines belonging to a first side display area located on the upper side of the display panel in the second direction, First to jth scan signal output blocks located on one side of the display panel in the first direction and each including a first output buffer, and a first front display area including curved edges in the second direction. The scan signal is provided to j+1th to kth (where k is an integer greater than j+1) scan lines, is located on one side of the display panel in the first direction, and produces a second output. j+1 to kth scan signal output blocks each including a buffer, and k+1 to mth scan signal output blocks belonging to a second front display area that does not include the corners in the second direction (where m is k+ (an integer greater than 1) k+1 to mth scan signal output blocks that provide the scan signal to scan lines, are located on the one side of the display panel in the first direction, and each include a third output buffer. , providing the scan signal to m+1th to nth (where n is an integer greater than m+1)th scan lines belonging to the first front display area, and providing the scan signal to the scan lines of the display panel in the first direction. m+1 to nth scan signal output blocks located on one side and each including the second output buffer, and the nth scan signal output blocks belonging to the second side display area located below the display panel in the second direction. The scan signal is provided to +1 to pth (where p is an integer greater than n+1) scan lines, located on the one side of the display panel in the first direction, and the first output buffer, respectively. It may include n+1th to pth scan signal output blocks. At this time, the width of the first side display area in the first direction and the width of the second side display area in the first direction are smaller than the width of the first front display area in the first direction, The width of the first front display area in the first direction is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction is It may become larger as it gets closer to the second front display area.

According to one embodiment, the length of the first to jth scan lines is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines is shorter than the length of the j+1th to kth scan lines. It is shorter than the length of the 1st to mth scan lines, and the length of the j+1th to kth scan lines may increase as it approaches the second front display area.

According to one embodiment, the length of the n+1th to pth scan lines is shorter than the length of the m+1th to nth scan lines, and the length of the m+1th to nth scan lines is shorter than the length of the m+1th to nth scan lines. It is shorter than the length of the k+1 to mth scan lines, and the length of the m+1 to nth scan lines may increase as it approaches the second front display area.

According to one embodiment, the size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the third output buffer. The size may increase as it approaches the second front display area.

According to one embodiment, the display device may further include a light emitting driver that provides a light emitting signal to the display panel through light emitting lines extending in the first direction. At this time, the timing controller may further control the light emitting driver. Additionally, the light emission driver provides the light emission signal to first to jth light emission lines belonging to the first side display area, is located on the other side of the display panel in the first direction, and provides a fourth output buffer, respectively. first to jth light emitting signal output blocks comprising, providing the light emitting signal to j+1th to kth light emitting lines belonging to the first front display area, and providing the light emitting signal to the other side of the display panel in the first direction. and providing the light emitting signal to j+1 to kth light emitting signal output blocks, each including a fifth output buffer, and k+1 to mth light emitting lines belonging to the second front display area, and , k+1 to mth light emitting signal output blocks located on the other side of the display panel in the first direction and each including a sixth output buffer, and m+1 to mth light emitting signal output blocks belonging to the first front display area. m+1 to nth light emitting signal output blocks that provide the light emitting signal to nth light emitting lines, are located on the other side of the display panel in the first direction, and each include the fifth output buffer; and providing the light emission signal to n+1 to pth light emission lines belonging to the second side display area, located on the other side of the display panel in the first direction, and each including the fourth output buffer. It may include n+1th to pth light emitting signal output blocks.

According to one embodiment, the length of the first to jth light emitting lines is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines is shorter than the k+th light emitting lines. It is shorter than the length of the 1st to mth light emitting lines, and the length of the j+1th to kth light emitting lines may increase as it approaches the second front display area.

According to one embodiment, the length of the n+1th to pth light emitting lines is shorter than the length of the m+1th to nth light emitting lines, and the length of the m+1th to nth light emitting lines is shorter than the length of the m+1th to nth light emitting lines. It is shorter than the length of the k+1 to mth light emitting lines, and the length of the m+1th to nth light emitting lines may increase as it approaches the second front display area.

According to one embodiment, the size of the fourth output buffer is smaller than the size of the fifth output buffer, the size of the fifth output buffer is smaller than the size of the sixth output buffer, and the size of the fifth output buffer is smaller than the size of the sixth output buffer. The size may increase as it approaches the second front display area.

A horizontal line driver (i.e., a scan driver or a light emitting driver) according to embodiments of the present invention has a first side display located on the upper side in a second direction (i.e., vertical direction) perpendicular to the first direction (horizontal direction). area, a second side display area positioned below in the second direction, a first front display area including curved edges in the second direction, and a second front display area not including curved edges in the second direction. (In this case, the width of the first and second side display areas in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is In driving a display panel that is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction increases as it approaches the second front display area, Includes an output buffer with the largest size (or capacity) at a position corresponding to the front display area, and an output buffer with the smallest size at positions corresponding to the first and second side display areas, and the first A structure including an output buffer at a position corresponding to the front display area, the size of which gradually increases as it approaches the second front display area (i.e., the size gradually decreases as it approaches the first and second side display areas). By having this, luminance unevenness due to the difference in RC delay between the first and second side display areas, the first front display area, and the second front display area can be effectively prevented.

Display devices according to embodiments of the present invention can provide high-quality images to users by including the horizontal line driver.

However, the effects of the present invention are not limited to the effects described above, and may be expanded in various ways without departing from the spirit and scope of the present invention.

1A is a diagram showing an electronic device according to embodiments of the present invention.
FIG. 1B is a plan view of the electronic device of FIG. 1A viewed from the front.
FIG. 2 is a diagram illustrating an example of a display panel included in the electronic device of FIG. 1A.
FIG. 3 is a diagram illustrating another example of a display panel included in the electronic device of FIG. 1A.
Figure 4 is a block diagram showing a horizontal line driver according to embodiments of the present invention.
FIG. 5 is a block diagram showing each scan signal output block included in the horizontal line driver of FIG. 4.
FIG. 6 is a diagram illustrating an example in which scan signal output blocks included in the horizontal line driver of FIG. 4 are connected to scan lines.
Figure 7 is a block diagram showing a horizontal line driver according to embodiments of the present invention.
FIG. 8 is a block diagram showing each light emitting signal output block included in the horizontal line driver of FIG. 7.
FIG. 9 is a diagram illustrating an example in which light emitting signal output blocks included in the horizontal line driver of FIG. 7 are connected to light emitting lines.
Figure 10 is a block diagram showing a display device according to embodiments of the present invention.
Figure 11 is a block diagram showing a display device according to embodiments of the present invention.
Figure 12 is a block diagram showing an electronic device according to embodiments of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. The same reference numerals will be used for the same components in the drawings, and duplicate descriptions for the same components will be omitted.

FIG. 1A is a diagram illustrating an electronic device according to embodiments of the present invention, FIG. 1B is a plan view of the electronic device of FIG. 1A viewed from the front, and FIG. 2 is an example of a display panel included in the electronic device of FIG. 1A. , and FIG. 3 is a diagram showing another example of a display panel included in the electronic device of FIG. 1A.

1A to 3 , the electronic device 10 includes a display device, and the display device may include a multi-faceted display panel (eg, display panel 20 or display panel 30). Depending on the embodiment, the display device may further include a touch sensor panel overlapping the multi-faceted display panel, or a touch sensor may be formed on the multi-faceted display panel. In this case, the display device can perform not only a display function but also a touch sensing function.

As shown in FIG. 1A , the electronic device 10 may include a multi-faceted display panel divided into a front display area (FFR, SFR) and a side display area (FSR, SSR, TSR, and FOSR). Accordingly, the electronic device 10 can have an elegant appearance that appeals to users, and can provide various display functions and/or touch through the front display area (FFR, SFR) and side display area (FSR, SSR, TSR, FOSR). Sensing function can be performed. For example, as shown in FIG. 1B, when the user looks at the electronic device 10 from the front direction (PDN), the front display area (FFR, SFR) is perceived as a plane perpendicular to the front direction (PDN). The side display areas (FSR, SSR, TSR, FOSR) may be perceived as a gently curved or flat surface inclined in the frontal direction (PDN). However, this is an example, and depending on the embodiment, the side display areas (FSR, SSR, TSR, FOSR) may be folded into a plane parallel to the front direction (PDN), and thus, can be perceived in the front direction (PDN). It may not work.

As described above, the multi-faceted display panel included in the electronic device 10 may be divided into a front display area (FFR, SFR) and a side display area (FSR, SSR, TSR, and FOSR). At this time, the multi-faceted display panel may include a plurality of pixel circuits connected to horizontal lines (ie, scan lines or emission lines) extending in the first direction (FDN). At this time, as shown in FIGS. 1A and 1B, the multi-sided display panel includes a front display area (FFR, SFR) and a side display area (FSR, SSR, TSR, FOSR), and the front display area (FFR) The width in the first direction (FDN), the width of the front display area (SFR) in the first direction (FDN), and the width of the side display areas (FSR, SSR) in the first direction (FDN) are different from each other. Accordingly, the length of the horizontal lines belonging to the front display area (FFR), the length of the horizontal lines belonging to the front display area (SFR), and the length of the horizontal lines belonging to the side display areas (FSR, SSR) are different from each other, and accordingly, The RC delay of the front display area (FFR), the RC delay of the front display area (SFR), and the RC delay of the side display areas (FSR, SSR) that occur when the scan signal or light emitting signal is transmitted through horizontal lines are also different from each other. . As a result, luminance unevenness between display areas may occur due to the difference in RC delay. However, since the side display areas (TSR, FOSR) share horizontal lines with the front display area (SFR), the luminance unevenness between the display areas due to the difference in RC delay is substantially in the second direction (SDN). It appears.

In one embodiment, as shown in FIG. 2, the display panel 20 has a first side display region (FSR) located on the upper side of the display panel 20 in the second direction (SDN), and a first side display region (FSR) located on the upper side of the display panel 20 in the second direction (SDN). ), the second side display area (SSR) located on the lower side of the display panel 20 in the first direction (FDN), the third side display area (TSR) located on the left side of the display panel 20 in the first direction (FDN), the first direction a fourth side display area (FOSR) located on the right side of the display panel 20 in (FDN), a first front display area (FFR) including curved edges (CED) in the second direction (SDN), and a It may include a second front display area (SFR) that does not include curved edges (CED) in two directions (SDN). At this time, the third side display area (TSR) and the fourth side display area (FOSR) share horizontal lines with the second front display area (SFR). In this case, the width of the first and second side display areas (FSR, SSR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and 1 The width of the front display area (FFR) in the first direction (FDN) is smaller than the width of the second front display area (SFR) in the first direction (FDN), and the width of the first front display area (FFR) is smaller than the width of the second front display area (SFR) in the first direction (FDN). The width in direction 1 (FDN) may increase as it approaches the second front display area (SFR). Accordingly, the length of the horizontal lines belonging to the first and second side display areas FSR and SSR is smaller than the length of the horizontal lines belonging to the first front display area FFR, and the length of the horizontal lines belonging to the first front display area FFR is smaller than the length of the horizontal lines belonging to the first front display area FFR. The length of the horizontal lines is smaller than the length of the horizontal lines belonging to the second front display area (SFR), and the length of the horizontal lines belonging to the first front display area (FFR) becomes closer to the second front display area (SFR). It can get bigger. As a result, the RC delay of the first front display area (FFR), the RC delay of the second front display area (SFR), and the RC delay of the first and second side display areas (FSR, SSR) are different from each other, and Accordingly, even if the same data signal is applied, luminance non-uniformity occurs between them.

In another embodiment, as shown in FIG. 3, the display panel 30 has a first side display region (FSR) located on the upper side of the display panel 30 in the second direction (SDN), and a first side display region (FSR) located on the upper side of the display panel 30 in the second direction (SDN). ), a second side display area (SSR) located on the lower side of the display panel 30, a first front display area (FFR) including curved edges (CED) in the second direction (SDN), and a second direction (SDN) (SDN) may include a second front display area (SFR) that does not include curved edges (CED). In this case, the width of the first and second side display areas (FSR, SSR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and 1 The width of the front display area (FFR) in the first direction (FDN) is smaller than the width of the second front display area (SFR) in the first direction (FDN), and the width of the first front display area (FFR) is smaller than the width of the second front display area (SFR) in the first direction (FDN). The width in direction 1 (FDN) may increase as it approaches the second front display area (SFR). Accordingly, the length of the horizontal lines belonging to the first and second side display areas FSR and SSR is smaller than the length of the horizontal lines belonging to the first front display area FFR, and the length of the horizontal lines belonging to the first front display area FFR is smaller than the length of the horizontal lines belonging to the first front display area FFR. The length of the horizontal lines is smaller than the length of the horizontal lines belonging to the second front display area (SFR), and the length of the horizontal lines belonging to the first front display area (FFR) becomes closer to the second front display area (SFR). It can get bigger. As a result, the RC delay of the first front display area (FFR), the RC delay of the second front display area (SFR), and the RC delay of the first and second side display areas (FSR, SSR) are different from each other, and Accordingly, even if the same data signal is applied, luminance non-uniformity occurs between them.

In order to prevent the above-described luminance unevenness, the horizontal line driver (i.e., scan driver or light emission driver) according to embodiments of the present invention has the longest length of horizontal lines (i.e., scan line or light emission line) (i.e., RC). It contains the largest output buffer in a position corresponding to the front display area (SFR) (which has the largest delay), and the side display areas (FSR, SSR) where the length of the horizontal lines is the shortest (i.e., the RC delay is smallest). It includes an output buffer with the smallest size at a position corresponding to Smaller than the RC delay of the area (SFR) and larger than the RC delay of the side display area (FSR, SSR)), the size gradually increases as it approaches the front display area (FFR) (i.e. , it may have a structure including an output buffer that gradually becomes smaller as it gets closer to the side display area (FSR, SSR). This will be described in detail later with reference to FIGS. 4 to 9. Meanwhile, as described above, the side display areas (TSR, FOSR) share horizontal lines with the front display area (SFR), and accordingly, the luminance unevenness between the display areas due to the difference in RC delay is substantially Since it appears in the second direction (SDN), the horizontal line driver (i.e., scan driver or light emission driver) according to embodiments of the present invention will be described based on the display panel 30 shown in FIG. 3.

FIG. 4 is a block diagram showing a horizontal line driver according to embodiments of the present invention, FIG. 5 is a block diagram showing each scan signal output block included in the horizontal line driver of FIG. 4, and FIG. 6 is a horizontal line driver of FIG. 4. This diagram shows an example in which scan signal output blocks included in a line driver are connected to scan lines.

4 to 6, the horizontal line driver 100 transmits a scan signal (SS) to the display panel 30 including pixel circuits connected to the first to pth scan lines extending in the first direction (FDN). (1), ..., SS(p)) can be provided. That is, the horizontal line driver 100 may be a scan driver included in the display device. The horizontal line driver 100 may include first to pth scan signal output blocks 120(1), ..., 120(p). At this time, the horizontal line driver 100 may be designed to extend along the outer edge of the display panel 30, and accordingly, the first to pth scan signal output blocks 120(1), ..., 120 (p)) may be arranged along one side of the display panel 30. For example, in FIG. 6 , the first to pth scan signal output blocks 120(1), ..., 120(p) are shown arranged along the left side of the display panel 30. Specifically, the first to pth scan signal output blocks 120(1), ..., 120(p) are first to pth scan signals extending in the first direction (FDN) within the display panel 30. Scan signals (SS(1), ..., SS(p)) can be provided to the lines, respectively. For example, the first scan signal output block 120(1) provides a scan signal SS(1) to the first scan line, and the second scan signal output block 120(2) provides a second scan signal. A scan signal (SS(2)) is provided to the line, and the pth scan signal output block 120(p) may provide a scan signal (SS(p)) to the pth scan line.

In one embodiment, as shown in FIG. 5, the scan signal output block 120(r) may include a shift stage 122(r) and an output buffer 124(r). The shift stage 122(r) may receive the scan start signal SST or the previous output signal OUT(r-1) and output the output signal OUT(r). For example, the shift stage 122(1) included in the first scan signal output block 120(1) may receive the scan start signal SST and output the output signal OUT(1), , the scan signal output block 120(r), other than the first scan signal output block 120(1), receives the previous output signal OUT(r-1) and outputs the output signal OUT(r). can do. In one embodiment, the shift stage 122(r) may be implemented as a flip-flop. Meanwhile, the first to pth shift stages 122(1), ..., 122() included in the first to pth scan signal output blocks 120(1), ..., 120(p). p)) can constitute a so-called shift register. The output buffer 124(r) may receive the output signal OUT(r) and output the scan signal SS(r). For example, the output buffer 124(r) improves the edge (e.g., rising edge and falling edge) characteristics of the output signal OUT(r) and increases the level of the output signal OUT(r). Level shifting can be performed. Meanwhile, the speed at which the scan signal SS(r) is applied to the scan line may be determined depending on the size (or capacity) of the output buffer 124(r). For example, if the size of the output buffer 124(r) is large, the scan line may be charged quickly, and if the size of the output buffer 124(r) is small, the scan line may be charged slowly. Accordingly, as the size of the output buffer 124(r) increases, the RC delay of the scan signal SS(r) output from the output buffer 124(r) decreases, and the RC delay of the scan signal SS(r) output from the output buffer 124(r) decreases. As the size becomes smaller, the RC delay of the scan signal SS(r) output from the corresponding output buffer 124(r) may increase. For example, the size of the output buffer 124(r) may be determined by the size of elements (eg, transistors, etc.) included in the output buffer 124(r).

As shown in FIG. 6, the display panel 30 has a first side display area (FSR) located on the upper side of the display panel 30 in the second direction (SDN), and a display panel (FSR) in the second direction (SDN). 30), a second side display area (SSR) located on the lower side, a first front display area (FFR) including curved edges in the second direction (SDN), and curved edges in the second direction (SDN) It may include a second front display area (SFR) that does not include any areas. At this time, the first to jth scan signal output blocks 120(1), ..., 120(j) are output on one side of the display panel 30 (e.g., FIG. 6) in the first direction (FDN). is disposed on the left side of the first side display area (FSR), and scan signals (SS(1), ..., SS(j) are transmitted to the first to jth scan lines belonging to the first side display area (FSR). )), and may include first output buffers 124(1), ..., 124(j), respectively. The j+1th to kth scan signal output blocks 120(j+1), ..., 120(k) are output on one side (e.g., FIG. In 6, it is disposed on the left side of the first front display area (FFR), and a scan signal (SS(j+1), .. ., SS(k)) and may include second output buffers 124(j+1), ..., 124(k), respectively. The k+1 to mth scan signal output blocks 120(k+1), ..., 120(m) are disposed on one side (e.g., FIG. In 6, it is disposed on the left side of the second front display area (SFR), and a scan signal SS(k+1) is applied to the k+1th to mth scan lines belonging to the second front display area (SFR). ., SS(m)) and may include third output buffers 124(k+1), ..., 124(m), respectively.

The m+1 to nth scan signal output blocks 120(m+1), ..., 120(n) are disposed on one side (e.g., FIG. In 6, it is disposed on the left side of the first front display area (FFR), and a scan signal (SS(m+1), .. ., SS(n)) and may include second output buffers 124(m+1), ..., 124(n), respectively. The n+1 to pth scan signal output blocks 120(n+1), ..., 120(p) are connected to one side (e.g., FIG. In 6, it is disposed on the left side of the second side display area (SSR), and a scan signal (SS(n+1), .. ., SS(p)) and may include first output buffers 124(n+1), ..., 124(p), respectively. At this time, the width of the first and second side display areas (FSR, SSR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and 1 The width of the front display area (FFR) in the first direction (FDN) is smaller than the width of the second front display area (SFR) in the first direction (FDN), and the width of the first front display area (FFR) is smaller than the width of the second front display area (SFR) in the first direction (FDN). Since the width in the first direction (FDN) increases as it approaches the second front display area (SFR), the lengths of the first to jth scan lines and the n+1th to pth scan lines are from j+1th to j+1th to pth scan lines. It is shorter than the length of the kth scan lines and the m+1th to nth scan lines, and the length of the j+1th to kth scan lines and the m+1th to nth scan lines is k+1 to mth. It is shorter than the length of the scan lines, and the lengths of the j+1th to kth scan lines and the m+1 to nth scan lines increase as they approach the second front display area SFR.

Accordingly, the horizontal line driver 100 includes the first to jth scan signal output blocks 120(1), ..., 120(j) arranged in the first side display area (FSR). Output buffers 124(1), ..., 124(j) and n+1 to pth scan signal output blocks 120(n+1) arranged in the second side display area SSR. The size (e.g., 104um) of the first output buffer 124(n+1), ..., 124(p) included in .., 120(p)) is divided into the first front display area (FFR). j+1 to kth scan signal output blocks 120(j+1), ..., 120(k) and m+1 to nth scan signal output blocks 120(m+ 1), ..., 120(n)) included in the second output buffer (124(j+1), ..., 124(k), 124(m+1), ..., 124(n) )) (e.g., 106um to 116um), and the j+1th to kth scan signal output blocks 120(j+1) arranged in the first front display area (FFR). ., 120(k)) and the second output buffer 124(j+1) included in the m+1 to nth scan signal output blocks 120(m+1),..., 120(n)). ), ..., 124(k), 124(m+1), ..., 124(n)) of the k+1th to mth scan signals arranged in the second front display area (SFR) The size (e.g., , 118um), and the j+1 to kth scan signal output blocks 120(j+1), ..., 120(k) and the mth scan signal output blocks 120(j+1), ..., 120(k) arranged in the first front display area (FFR). Second output buffers 124(j+1), ..., 124(k) included in +1 to nth scan signal output blocks 120(m+1), ..., 120(n) , 124(m+1), ..., 124(n)) by increasing the size as it approaches the second front display area (SFR), so that the first and second side display areas (FSR, SSR) , luminance unevenness due to the difference in RC delay between the first front display area (FFR) and the second front display area (SFR) can be effectively prevented.

In this way, the horizontal line driver 100 (i.e., scan driver) has a first side located above in the second direction (SDN) (i.e., vertical direction) perpendicular to the first direction (FDN) (horizontal direction). A display area (FSR), a second side display area (SSR) located below in the second direction (SDN), a first front display area (FFR) including curved edges in the second direction (SDN), and Divided into a second front display area (SFR) that does not include curved edges in two directions (SDN) (here, in the first direction (FDN) of the first and second side display areas (FSR, SSR) The width of the first front display area (FFR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and the width of the first front display area (FFR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN). ) in the first direction (SFR), and the width of the first front display area (FFR) in the first direction (FDN) increases as it approaches the second front display area (SFR). When driving the panel 30, the output buffer with the largest size (i.e., the third output buffer 124(k+1), ..., 124(m) is placed at a position corresponding to the second front display area (SFR). ))), and an output buffer with the smallest size (i.e., the first output buffer 124(1), ..., 124(j), 124(n+1), ..., 124(p))), and closer to the second front display area (SFR) at a position corresponding to the first front display area (FFR). An output buffer (i.e., a second output buffer 124(j+1)) whose size is gradually larger (i.e., the size is gradually smaller as it approaches the first and second side display areas FSR and SSR). .., 124(k), 124(m+1), ..., 124(n))), so that the first and second side display regions (FSR, SSR), the first Brightness unevenness due to the difference in RC delay between the front display area (FFR) and the second front display area (SFR) can be effectively prevented.

FIG. 7 is a block diagram showing a horizontal line driver according to embodiments of the present invention, FIG. 8 is a block diagram showing each light emitting signal output block included in the horizontal line driver of FIG. 7, and FIG. 9 is a horizontal line driver of FIG. 7. This diagram shows an example in which light emitting signal output blocks included in a line driver are connected to light emitting lines.

7 to 9, the horizontal line driver 200 transmits a light emitting signal (ES) to the display panel 30 including pixel circuits connected to the first to pth light emitting lines extending in the first direction (FDN). (1), ..., ES(p)) can be provided. That is, the horizontal line driver 200 may be a light emitting driver included in the display device. The horizontal line driver 200 may include first to pth light emitting signal output blocks 220(1), ..., 220(p). At this time, the horizontal line driver 200 may be designed to extend along the outer edge of the display panel 30, and accordingly, the first to pth light emitting signal output blocks 220(1), ..., 220 (p)) may be arranged along one side of the display panel 30. For example, in FIG. 9 , the first to pth light emitting signal output blocks 220(1), ..., 220(p) are shown arranged along the right side of the display panel 30. Specifically, the first to pth light emitting signal output blocks 220(1), ..., 220(p) are the first to pth light emitting signals extending in the first direction (FDN) within the display panel 30. Light emitting signals (ES(1), ..., ES(p)) can be provided to the lines, respectively. For example, the first light emission signal output block 220(1) provides the light emission signal ES(1) to the first light emission line, and the second light emission signal output block 220(2) provides the second light emission line. An emission signal (ES(2)) is provided to the line, and the p-th emission signal output block 220(p) may provide an emission signal (ES(p)) to the p-th emission line.

In one embodiment, as shown in FIG. 8, the light emitting signal output block 220(r) may include a shift stage 222(r) and an output buffer 224(r). The shift stage 222(r) may receive the light emission start signal EST or the previous output signal OUT(r-1) and output the output signal OUT(r). For example, the shift stage 222(1) included in the first light emission signal output block 220(1) may receive the light emission start signal EST and output the output signal OUT(1). , the light emitting signal output block 220(r), other than the first light emitting signal output block 220(1), receives the previous output signal OUT(r-1) and outputs the output signal OUT(r). can do. In one embodiment, shift stage 222(r) may be implemented as a flip-flop. Meanwhile, the first to p-th shift stages 222 (1), ..., 222 ( p)) can constitute a so-called shift register. The output buffer 224(r) may receive the output signal OUT(r) and output the light emitting signal ES(r). For example, the output buffer 224(r) improves the edge (e.g., rising edge and falling edge) characteristics of the output signal OUT(r) and increases the level of the output signal OUT(r). Shifting can be performed. Meanwhile, the speed at which the light emitting signal ES(r) is applied to the light emitting line may be determined depending on the size (or capacity) of the output buffer 224(r). For example, if the size of the output buffer 224(r) is large, the light emitting line may be charged quickly, and if the size of the output buffer 224(r) is small, the light emitting line may be charged slowly. Accordingly, as the size of the output buffer 224(r) increases, the RC delay of the light emitting signal ES(r) output from the corresponding output buffer 224(r) decreases, and the RC delay of the output buffer 224(r) decreases. As the size becomes smaller, the RC delay of the light emitting signal (ES(r)) output from the output buffer 224(r) may increase. For example, the size of the output buffer 224(r) may be determined by the size of elements (eg, transistors, etc.) included in the output buffer 224(r).

As shown in FIG. 9, the display panel 30 has a first side display area (FSR) located on the upper side of the display panel 30 in the second direction (SDN), and a display panel (FSR) in the second direction (SDN). 30), a second side display area (SSR) located on the lower side, a first front display area (FFR) including curved edges in the second direction (SDN), and curved edges in the second direction (SDN) It may include a second front display area (SFR) that does not include any areas. At this time, the first to j light emitting signal output blocks 220(1), ..., 220(j) are disposed on one side of the display panel 30 (e.g., FIG. 9) in the first direction (FDN). is disposed on the right side of the first side display region (FSR), and emits signals ES(1), ..., ES(j) to the first to jth emission lines belonging to the first side display region (FSR). )), and may include first output buffers 224(1), ..., 224(j), respectively. The j+1 to kth light emission signal output blocks 220(j+1), ..., 220(k) are disposed on one side (e.g., FIG. In 9, it is disposed on the right side of the first front display area (FFR) and emits a light emitting signal (ES(j+1), .. ., ES(k)) and may include second output buffers 224(j+1), ..., 224(k), respectively. The k+1 to mth light emitting signal output blocks 220(k+1), ..., 220(m) are disposed on one side (e.g., FIG. In Fig. 9, it is disposed on the right side of the second front display area (SFR) and emits a light emitting signal (ES(k+1)) to the k+1th to mth light emitting lines belonging to the second front display area (SFR). ., ES(m)) and may include third output buffers 224(k+1), ..., 224(m), respectively.

The m+1th to nth light emitting signal output blocks 220(m+1), ..., 220(n) are disposed on one side (e.g., FIG. In Fig. 9, it is disposed on the right side of the first front display area (FFR) and emits a light emitting signal (ES(m+1)) to the m+1th to nth light emitting lines belonging to the first front display area (FFR). ., ES(n)) and may include second output buffers 224(m+1), ..., 224(n), respectively. The n+1 to pth light emitting signal output blocks 220(n+1), ..., 220(p) are disposed on one side (e.g., FIG. In 9, it is disposed on the right side of the second side display area (SSR) and emits a light emitting signal (ES(n+1), .. ., ES(p)) and may include first output buffers 224(n+1), ..., 224(p), respectively. At this time, the width of the first and second side display areas (FSR, SSR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and 1 The width of the front display area (FFR) in the first direction (FDN) is smaller than the width of the second front display area (SFR) in the first direction (FDN), and the width of the first front display area (FFR) is smaller than the width of the second front display area (SFR) in the first direction (FDN). Since the width in the first direction (FDN) increases as it approaches the second front display area (SFR), the lengths of the first to jth emission lines and the n+1th to pth emission lines are from the j+1th to the j+1th emission lines. It is shorter than the length of the k-th emission lines and the m+1 to n-th emission lines, and the length of the j+1 to k-th emission lines and the m+1 to n-th emission lines is k+1 to m-th. It is shorter than the length of the light emitting lines, and the lengths of the j+1 to kth light emitting lines and the m+1 to nth light emitting lines increase as they approach the second front display area SFR.

Accordingly, the horizontal line driver 200 includes the first to jth light emitting signal output blocks 220(1), ..., 220(j) disposed in the first side display region FSR. The output buffers 224(1), ..., 224(j) and n+1 to pth light emitting signal output blocks 220(n+1) arranged in the second side display area SSR. The size (e.g., 104um) of the first output buffer 224(n+1), ..., 224(p) included in .., 220(p)) is divided into the first front display area (FFR). j+1 to kth light emission signal output blocks 220(j+1), ..., 220(k) and m+1 to nth light emission signal output blocks 220(m+ 1), ..., 220(n)) included in the second output buffer (224(j+1), ..., 224(k), 224(m+1), ..., 224(n) )) (e.g., 106um to 116um), and the j+1th to kth light emitting signal output blocks 220 (j+1) arranged in the first front display area (FFR). ., 220(k)) and the second output buffer 224(j+1) included in the m+1 to nth light emitting signal output blocks 220(m+1),..., 220(n). ), ..., 224(k), 224(m+1), ..., 224(n)) of the k+1th to mth light emitting signals arranged in the second front display area (SFR) The size (e.g., , 118um), and the j+1 to kth light emitting signal output blocks 220(j+1), ..., 220(k) and mth arranged in the first front display area (FFR). Second output buffers 224(j+1), ..., 224(k) included in the +1 to nth light emitting signal output blocks 220(m+1), ..., 220(n) , 224(m+1), ..., 224(n)) by increasing the size as it approaches the second front display area (SFR), so that the first and second side display areas (FSR, SSR) , luminance unevenness due to the difference in RC delay between the first front display area (FFR) and the second front display area (SFR) can be effectively prevented.

In this way, the horizontal line driver 200 (i.e., the light emitting driver) has a first side located on the upper side in the second direction (SDN) (i.e., the vertical direction) perpendicular to the first direction (FDN) (horizontal direction). A display area (FSR), a second side display area (SSR) located below in the second direction (SDN), a first front display area (FFR) including curved edges in the second direction (SDN), and Divided into a second front display area (SFR) that does not include curved edges in two directions (SDN) (here, in the first direction (FDN) of the first and second side display areas (FSR, SSR) The width of the first front display area (FFR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN), and the width of the first front display area (FFR) in the first direction (FDN) is smaller than the width of the first front display area (FFR) in the first direction (FDN). ) in the first direction (SFR), and the width of the first front display area (FFR) in the first direction (FDN) increases as it approaches the second front display area (SFR). When driving the panel 30, the output buffer with the largest size (i.e., the third output buffer 224(k+1), ..., 224(m) is placed at a position corresponding to the second front display area (SFR). ))), and an output buffer with the smallest size (i.e., the first output buffer 224(1), ..., 224(j), 224(n+1), ..., 224(p))), and closer to the second front display area (SFR) at a position corresponding to the first front display area (FFR). An output buffer (i.e., a second output buffer 224(j+1)) whose size is gradually larger (i.e., the size is gradually smaller as it approaches the first and second side display areas FSR and SSR). .., 224(k), 224(m+1), ..., 224(n))), thereby forming the first and second side display regions (FSR, SSR), the first Brightness unevenness due to the difference in RC delay between the front display area (FFR) and the second front display area (SFR) can be effectively prevented.

Figure 10 is a block diagram showing a display device according to embodiments of the present invention.

Referring to FIG. 10 , the display device 500 may include a display panel 510, a scan driver 520, a data driver 530, and a timing controller 540. At this time, the display device 500 may be an organic light emitting display device or a liquid crystal display device, but the display device 500 is not limited thereto.

The display panel 510 may include a plurality of pixel circuits (P). In one embodiment, the pixel circuits P may be arranged in a matrix form within the display panel 510. The display panel 510 includes a first side display area located on the upper side of the display panel 510 in a second direction (i.e., vertical direction) perpendicular to the first direction (i.e., horizontal direction), and a display panel in the second direction. It includes a second side display area located below 510, a first front display area including curved edges in the second direction, and a second front display area not including curved edges in the second direction. can do. In this case, the width of the first and second side display areas in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. It is smaller than the width of the display area in the first direction, and the width of the first front display area in the first direction may increase as it approaches the second front display area. However, for convenience of explanation, the display panel 510 is shown as a simple square box in FIG. 10 . The display panel 510 may be connected to the scan driver 520 through scan lines extending in the first direction. Accordingly, the scan driver 520 may provide the scan signal SS to the pixel circuits P of the display panel 510 through the scan lines. At this time, the length of the scan lines belonging to the first and second side display areas is smaller than the length of the scan lines belonging to the first front display area, and the length of the scan lines belonging to the first front display area is smaller than the length of the scan lines belonging to the first front display area. is smaller than the length of the scan lines belonging to the first front display area, and the length of the scan lines belonging to the first front display area may increase as it approaches the second front display area. The display panel 510 may be connected to the data driver 530 through data lines extending in the second direction. Accordingly, the data driver 530 converts the image data provided from the timing controller 540 into a data voltage, that is, the data signal DS, and then transmits the data signal DS through the data lines to the pixel circuit of the display panel 510. It can be provided to (P)s. The timing controller 540 can control the scan driver 520 and the data driver 530. Depending on the embodiment, the timing controller 540 may receive image data from the outside, perform predetermined processing (for example, data compensation processing, etc.), and then provide the processed image data to the data driver 530. .

As described above, the scan driver 520 provides the scan signal SS to the first to jth scan lines belonging to the first side display area, and is located on one side of the display panel 510 in the first direction. , providing a scan signal (SS) to first to jth scan signal output blocks each including a first output buffer, and j+1 to kth scan lines belonging to the first front display area, and providing a scan signal (SS) in the first direction. j+1 to kth scan signal output blocks located on one side of the display panel 510 and each including a second output buffer, and k+1 to mth scan lines belonging to the second front display area. k+1 to mth scan signal output blocks that provide a scan signal SS, are located on one side of the display panel 510 in the first direction, and each include a third output buffer, and a first front display The m+1th scan signal (SS) is provided to the m+1th to nth scan lines belonging to the area, is located on one side of the display panel 510 in the first direction, and each includes a second output buffer. A scan signal SS is provided to the nth to nth scan signal output blocks and the n+1th to pth scan lines belonging to the second side display area, and is located on one side of the display panel 510 in the first direction. and may include n+1th to pth scan signal output blocks, each including a first output buffer. At this time, the size of the first output buffer for the first and second side display areas is smaller than the size of the second output buffer for the first front display area, and the size of the second output buffer for the first front display area is smaller than the size of the second output buffer for the first front display area. It is smaller than the size of the third output buffer for the second front display area, and the size of the second output buffer for the first front display area may become larger as it approaches the second front display area. However, since this has been explained with reference to FIGS. 4 to 6, duplicate description thereof will be omitted. In this way, the display device 500 effectively prevents luminance unevenness due to differences in RC delay between the first and second side display areas, the first front display area, and the second front display area within the display panel 510. By including the scan driver 520, high quality images can be provided to the user.

Figure 11 is a block diagram showing a display device according to embodiments of the present invention.

Referring to FIG. 11 , the display device 700 may include a display panel 710, a scan driver 720, a light emission driver 725, a data driver 730, and a timing controller 740. At this time, the display device 700 may be an organic light emitting display device or a liquid crystal display device, but the display device 700 is not limited thereto. Meanwhile, the display device 700 of FIG. 11 is substantially the same as the display device 500 of FIG. 10 except that it further includes a light emission driver 725, so the display device 700 of FIG. 11 includes a light emission driver ( The explanation will focus on 725).

The display panel 710 may include a plurality of pixel circuits (P). In one embodiment, the pixel circuits P may be arranged in a matrix form within the display panel 710. The display panel 710 includes a first side display area located on the upper side of the display panel 710 in a second direction (i.e., vertical direction) perpendicular to the first direction (i.e., horizontal direction), and a display panel in the second direction. It includes a second side display area located below 710, a first front display area including curved edges in the second direction, and a second front display area not including curved edges in the second direction. can do. In this case, the width of the first and second side display areas in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. It is smaller than the width of the display area in the first direction, and the width of the first front display area in the first direction may increase as it approaches the second front display area. However, for convenience of explanation, the display panel 710 is shown as a simple square box in FIG. 11 . The display panel 710 may be connected to the scan driver 720 through scan lines extending in the first direction. Accordingly, the scan driver 720 may provide the scan signal SS to the pixel circuits P of the display panel 710 through the scan lines. The display panel 710 may be connected to the light emitting driver 725 through light emitting lines extending in the first direction. Accordingly, the light emission driver 725 may provide the light emission signal ES to the pixel circuits P of the display panel 710 through the light emission lines. At this time, the length of the light emitting lines belonging to the first and second side display areas is smaller than the length of the light emitting lines belonging to the first front display area, and the length of the light emitting lines belonging to the first front display area is smaller than the length of the light emitting lines belonging to the first front display area. is smaller than the length of the light emitting lines belonging to the first front display area, and the length of the light emitting lines belonging to the first front display area may increase as it approaches the second front display area. The display panel 710 may be connected to the data driver 730 through data lines extending in the second direction. Accordingly, the data driver 730 may provide the data signal DS to the pixel circuits P of the display panel 710 through the data lines. The timing controller 740 can control the scan driver 720, the light emission driver 725, and the data driver 730.

As described above, the scan driver 720 may be located on one side of the display panel 710 in the first direction. On the other hand, the light emitting driver 725 may be located on the other side of the display panel 710 in the first direction. Specifically, the light emission driver 720 provides the light emission signal ES to the first to jth light emission lines belonging to the first side display area, is located on the other side of the display panel 710 in the first direction, and is located on the other side of the display panel 710 in the first direction. 1st to jth light emitting signal output blocks each including an output buffer, providing a light emitting signal (ES) to j+1th to kth light emitting lines belonging to the first front display area, and displaying in the first direction. Located on the other side of the panel 710, j+1 to kth light emitting signal output blocks each including a second output buffer, and emitting light to k+1 to mth light emitting lines belonging to the second front display area. k+1 to mth light emitting signal output blocks that provide the signal ES, are located on the other side of the display panel 710 in the first direction and each include a third output buffer, and are located in the first front display area. The m+1 to nth light emitting lines are provided with an emission signal ES, are located on the other side of the display panel 710 in the first direction, and include a second output buffer, respectively. Provides a light emission signal (ES) to n light emission signal output blocks and n+1 to pth light emission lines belonging to the second side display area, and is located on the other side of the display panel 710 in the first direction, It may include n+1th to pth light emitting signal output blocks, each including a first output buffer. At this time, the size of the first output buffer for the first and second side display areas is smaller than the size of the second output buffer for the first front display area, and the size of the second output buffer for the first front display area is smaller than the size of the second output buffer for the first front display area. It is smaller than the size of the third output buffer for the second front display area, and the size of the second output buffer for the first front display area may become larger as it approaches the second front display area. However, since this has been explained with reference to FIGS. 7 to 9, duplicate description thereof will be omitted. In this way, the display device 700 effectively prevents luminance unevenness due to differences in RC delay between the first and second side display areas, the first front display area, and the second front display area within the display panel 710. By including the scan driver 720 and the light emitting driver 725, high quality images can be provided to the user.

Figure 12 is a block diagram showing an electronic device according to embodiments of the present invention.

Referring to FIG. 12, the electronic device 1000 may include a processor 1010, a memory device 1020, a storage device 1030, an input/output device 1040, a power supply 1050, and a display device 1060. there is. At this time, the display device 1060 may correspond to the display device 500 of FIG. 10 or the display device 700 of FIG. 11. The electronic device 1000 may further include several ports that can communicate with a video card, sound card, memory card, USB device, etc., or with other systems. In one embodiment, as shown in FIG. 1, the electronic device 1000 may be implemented as a smartphone. However, this is an example, and the electronic device 1000 is not limited thereto. For example, the electronic device 1000 may be implemented as a mobile phone, video phone, smart pad, smart watch, tablet PC, vehicle navigation system, computer monitor, laptop, digital camera, etc. It may be possible.

Processor 1010 may perform specific calculations or tasks. Depending on the embodiment, the processor 1010 may be a microprocessor, a central processing unit (CPU), an application processor (AP), or the like. The processor 1010 may be connected to other components through an address bus, control bus, and data bus. Depending on the embodiment, the processor 1010 may also be connected to an expansion bus, such as a peripheral component interconnect (PCI) bus. The memory device 1020 can store data necessary for the operation of the electronic device 1000. For example, the memory device 1020 may be an erasable programmable read-only memory (EPROM) device, an electrically erasable programmable read-only memory (EEPROM) device, a flash memory device, or a PRAM ( phase change random access memory (PRAM) device, resistance random access memory (RRAM) device, nano floating gate memory (NFGM) device, polymer random access memory (PoRAM) device, magnetic random access memory (MRAM) device Non-volatile memory devices such as access memory (MRAM), ferroelectric random access memory (FRAM) devices, and/or dynamic random access memory (DRAM) devices, static random access memory (SRAM) devices, mobile It may include volatile memory devices such as DRAM devices. The storage device 1030 may include a solid state drive (SSD), hard disk drive (HDD), CD-ROM, etc. The input/output (I/O) device 1040 may include input means such as a keyboard, keypad, touch pad, touch screen, and mouse, and output means such as a speaker and printer. Depending on the embodiment, the display device 1060 may be included in the input/output device 1040. The power supply 1050 may supply power necessary for the operation of the electronic device 1000.

Display device 1060 may be connected to other components via the buses or other communication links. At this time, the display device 1060 may be an organic light emitting display device or a liquid crystal display device. However, this is an example, and the display device 1060 is not limited thereto. In one embodiment, the display device 1060 includes a display panel including pixel circuits, a scan driver providing a scan signal to the display panel through scan lines extending in a first direction (i.e., horizontal direction), and It may include a data driver that provides a data signal to the display panel through data lines extending in a second vertical direction (i.e., vertical direction), and a timing controller that controls the scan driver and the data driver. In another embodiment, the display device 1060 includes a display panel including pixel circuits, a scan driver providing a scan signal to the display panel through scan lines extending in a first direction, and light emitting lines extending in a first direction. A light emitting driver that provides a light emitting signal to the display panel, a data driver that provides a data signal to the display panel through data lines extending in a second direction perpendicular to the first direction, and a device that controls the scan driver, the light emitting driver, and the data driver. May include a timing controller. At this time, the display panel includes a first side display area located above in a second direction perpendicular to the first direction, a second side display area located below in the second direction, and curved edges in the second direction. divided into a first front display area and a second front display area that does not include curved edges in the second direction (here, the width of the first and second side display areas in the first direction is the first front display area). smaller than the width of the area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. becomes larger as it approaches the second front display area), and the horizontal line driver (i.e., scan driver or light emitting driver) includes an output buffer with the largest size at a position corresponding to the second front display area, and It includes an output buffer with the smallest size at positions corresponding to the first and second side display areas, and an output buffer whose size gradually increases as it approaches the second front display area at a position corresponding to the first front display area. It can be included. Accordingly, the horizontal line driver can effectively prevent luminance unevenness due to the difference in RC delay between the first and second side display areas, the first front display area, and the second front display area, and accordingly, the display device 1060 can provide high quality images to users. However, since this has been described above, redundant description thereof will be omitted.

The present invention can be applied to display devices and electronic devices including the same. For example, the present invention may be implemented in a mobile phone, smart phone, video phone, smart pad, smart watch, tablet PC, vehicle navigation system, computer monitor, laptop, digital camera, etc.

Although the present invention has been described above with reference to exemplary embodiments, those skilled in the art can vary the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be modified and changed.

10: electronic device 20: display panel
30: display panel 100: horizontal line driver
110: display panel 112: first side display area
114: first front display area 116: second front display area
118: second side display area 120: scan signal output block
122: shift stage 124: output buffer
200: horizontal line driver 210: display panel
212: first side display area 214: first front display area
216: second front display area 218: second side display area
220: light emitting signal output block 222: shift stage
224: output buffer 500: display device
510: Display panel 520: Scan driver
530: data driver 540: timing controller
700: display device 710: display panel
720: Scan driver 725: Luminous driver
730: data driver 740: timing controller
1000: Electronic device 1010: Processor
1020: Memory device 1030: Storage device
1040: Input/output device 1050: Power supply
1060: display device

Claims (20)

A horizontal line driver that provides a scan signal to a display panel including a plurality of pixel circuits connected to scan lines extending in a first direction,
Providing the scan signal to first to jth (where j is an integer greater than 1) scan lines belonging to a first side display area located on the upper side of the display panel in a second direction perpendicular to the first direction. and first to jth scan signal output blocks located on one side of the display panel in the first direction and each including a first output buffer;
Providing the scan signal to j+1 to kth (where k is an integer greater than j+1) scan lines belonging to the first front display area including curved edges in the second direction, j+1 to kth scan signal output blocks located on one side of the display panel in a first direction and each including a second output buffer; and
providing the scan signal to k+1 to m (where m is an integer greater than k+1)th scan lines belonging to a second front display area that does not include the corners in the second direction, and It is located on one side of the display panel in one direction and includes k+1th to mth scan signal output blocks, each including a third output buffer,
The width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. 2 is smaller than the width of the front display area in the first direction, and the width of the first front display area in the first direction increases as it approaches the second front display area,
The size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the second output buffer. It gets bigger as it gets closer to the front display area,
The length of the first to jth scan lines is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines is shorter than the k+1th to mth scan lines. is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines increases as it approaches the second front display area,
The scan signal is provided to m+1th to nth (where n is an integer greater than m+1)th scan lines belonging to the first front display area, and is applied to the one side of the display panel in the first direction. m+1 to nth scan signal output blocks each including the second output buffer and n+1 to nth scan signal output blocks belonging to the second side display area located below the display panel in the second direction. Provides the scan signal to p (where p is an integer greater than n+1) scan lines, is located on one side of the display panel in the first direction, and each includes the first output buffer. Further comprising n+1 to pth scan signal output blocks,
The width of the second side display area in the first direction is smaller than the width of the first front display area in the first direction,
The length of the n+1th to pth scan lines is shorter than the length of the m+1th to nth scan lines, and the length of the m+1th to nth scan lines is shorter than the length of the m+1th to nth scan lines. The horizontal line driver is shorter than the length of the scan lines, and the length of the m+1th to nth scan lines increases as it approaches the second front display area. delete delete delete delete delete A horizontal line driver that provides a light emitting signal to a display panel including a plurality of pixel circuits connected to light emitting lines extending in a first direction,
Providing the light emission signal to first to jth (where j is an integer greater than 1) light emission lines belonging to a first side display area located on the upper side of the display panel in a second direction perpendicular to the first direction. and first to jth light emitting signal output blocks located on one side of the display panel in the first direction and each including a first output buffer;
providing the light emitting signal to j+1 to kth (where k is an integer greater than j+1) light emitting lines belonging to the first front display area including curved edges in the second direction, j+1 to kth light emitting signal output blocks located on one side of the display panel in a first direction and each including a second output buffer; and
providing the light emitting signal to k+1th to mth (where m is an integer greater than k+1) light emitting lines belonging to a second front display area that does not include the corners in the second direction, and It is located on one side of the display panel in one direction and includes k+1th to mth light emitting signal output blocks each including a third output buffer,
The width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the first front display area in the first direction. 2 is smaller than the width of the front display area in the first direction, and the width of the first front display area in the first direction increases as it approaches the second front display area,
The size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the second output buffer. It gets bigger as it gets closer to the front display area,
The length of the first to jth light emitting lines is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines is shorter than the k+1th to mth light emitting lines. is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines increases as it approaches the second front display area,
The light emitting signal is provided to m+1 to nth (where n is an integer greater than m+1) light emitting lines belonging to the first front display area, and is applied to the one side of the display panel in the first direction. m+1 to nth light emitting signal output blocks each including the second output buffer and n+1 to nth light emitting signal output blocks belonging to the second side display area located below the display panel in the second direction. Provides the light emitting signal to p (where p is an integer greater than n+1) light emitting lines, is located on the one side of the display panel in the first direction, and each includes the first output buffer. Further comprising n+1 to pth light emitting signal output blocks,
The width of the second side display area in the first direction is smaller than the width of the first front display area in the first direction,
The length of the n+1 to pth light emitting lines is shorter than the length of the m+1 to nth light emitting lines, and the length of the m+1 to nth light emitting lines is shorter than the length of the m+1 to nth light emitting lines. The horizontal line driver is shorter than the length of the light emitting lines, and the length of the m+1th to nth light emitting lines increases as it approaches the second front display area. delete delete delete delete delete A display panel including a plurality of pixel circuits;
a scan driver that provides a scan signal to the display panel through scan lines extending in a first direction;
a data driver providing a data signal to the display panel through data lines extending in a second direction perpendicular to the first direction; and
A timing controller that controls the scan driver and the data driver,
The scan driver is
The scan signal is provided to first to jth (where j is an integer greater than 1) scan lines belonging to a first side display area located on the upper side of the display panel in the second direction, and first to jth scan signal output blocks located on one side of the display panel and each including a first output buffer;
Providing the scan signal to j+1 to kth (where k is an integer greater than j+1) scan lines belonging to the first front display area including curved edges in the second direction, j+1 to kth scan signal output blocks located on one side of the display panel in a first direction and each including a second output buffer;
providing the scan signal to k+1 to m (where m is an integer greater than k+1)th scan lines belonging to a second front display area that does not include the corners in the second direction, and k+1 to mth scan signal output blocks located on one side of the display panel in one direction and each including a third output buffer;
The scan signal is provided to m+1th to nth (where n is an integer greater than m+1)th scan lines belonging to the first front display area, and is applied to the one side of the display panel in the first direction. m+1 to nth scan signal output blocks located and each including the second output buffer; and
providing the scan signal to n+1 to pth (where p is an integer greater than n+1) scan lines belonging to a second side display area located below the display panel in the second direction; positioned on one side of the display panel in the first direction and comprising n+1th to pth scan signal output blocks each including the first output buffer;
The width of the first side display area in the first direction and the width of the second side display area in the first direction are smaller than the width of the first front display area in the first direction, and the width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction. The width of the front display area in the first direction is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the second front display area in the first direction. It gets bigger as it gets closer to the front display area,
The size of the first output buffer is smaller than the size of the second output buffer, the size of the second output buffer is smaller than the size of the third output buffer, and the size of the second output buffer is smaller than the size of the second output buffer. It gets bigger as it gets closer to the front display area,
The length of the first to jth scan lines is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines is shorter than the k+1th to mth scan lines. is shorter than the length of the j+1th to kth scan lines, and the length of the j+1th to kth scan lines increases as it approaches the second front display area,
The length of the n+1th to pth scan lines is shorter than the length of the m+1th to nth scan lines, and the length of the m+1th to nth scan lines is shorter than the length of the m+1th to nth scan lines. The display device is shorter than the length of the scan lines, and the length of the m+1th to nth scan lines increases as it approaches the second front display area. delete delete delete A display panel including a plurality of pixel circuits;
a scan driver that provides a scan signal to the display panel through scan lines extending in a first direction;
a data driver providing a data signal to the display panel through data lines extending in a second direction perpendicular to the first direction;
a light emitting driver that provides a light emitting signal to the display panel through light emitting lines extending in the first direction; and
A timing controller that controls the scan driver, the data driver, and the light emitting driver,
The light emitting driver is
The first to jth light emitting signals are provided to first to jth light emitting lines belonging to the first side display area, are located on the other side of the display panel in the first direction, and each include a fourth output buffer. luminescent signal output blocks;
The jth light emitting signal is provided to the j+1th to kth light emitting lines belonging to the first front display area, is located on the other side of the display panel in the first direction, and each includes a fifth output buffer. +1 to kth light emitting signal output blocks;
The light emission signal is provided to k+1 to mth light emission lines belonging to the second front display area, the kth light emission signal is provided on the other side of the display panel in the first direction, and each includes a sixth output buffer. +1 to mth light emitting signal output blocks;
providing the light emission signal to m+1 to nth light emission lines belonging to the first front display area, located on the other side of the display panel in the first direction, and each including the fifth output buffer. m+1th to nth light emitting signal output blocks; and
Provides the light emission signal to n+1 to pth light emission lines belonging to the second side display area, is located on the other side of the display panel in the first direction, and each includes the fourth output buffer. Includes n+1 to pth light emitting signal output blocks,
The width of the first side display area in the first direction and the width of the second side display area in the first direction are smaller than the width of the first front display area in the first direction, and the width of the first side display area in the first direction is smaller than the width of the first front display area in the first direction. The width of the front display area in the first direction is smaller than the width of the second front display area in the first direction, and the width of the first front display area in the first direction is smaller than the width of the second front display area in the first direction. It gets bigger as it gets closer to the front display area,
The size of the fourth output buffer is smaller than the size of the fifth output buffer, the size of the fifth output buffer is smaller than the size of the sixth output buffer, and the size of the fifth output buffer is smaller than the size of the second output buffer. It gets bigger as it gets closer to the front display area,
The length of the first to jth light emitting lines is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines is shorter than the k+1th to mth light emitting lines. is shorter than the length of the j+1th to kth light emitting lines, and the length of the j+1th to kth light emitting lines increases as it approaches the second front display area,
The length of the n+1 to pth light emitting lines is shorter than the length of the m+1 to nth light emitting lines, and the length of the m+1 to nth light emitting lines is shorter than the length of the m+1 to nth light emitting lines. The display device is shorter than the length of the light emitting lines, and the length of the m+1th to nth light emitting lines increases as it approaches the second front display area. delete delete delete

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