US-20260130103-A1 - DISPLAY DEVICE, REPAIRING METHOD THEREOF AND ELECTRONIC DEVICE HAVING THE DISPLAY DEVICE

Abstract

A display device includes a substrate in which a display area including first and second areas and a non-display area surrounding at least one side of the display area are defined, a sub-pixel arranged in the display area, first and second dummy pixels arranged in the non-display area, and a repair line commonly provided to the display area and the non-display area and extending in a first direction. The non-display area includes a first non-display area and a second non-display area. The repair line includes a first repair line and a second repair line arranged between a first pixel row and a second pixel row in the first area. Each of the first and second dummy pixels includes a first capacitor electrically connected to a dummy pixel circuit. The first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel have different sizes.

Inventors

• Jong Hyun Choi

Assignees

• SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date

20260507

Application Date

20250613

Priority Date

20241107

Claims (20)

1. 1 . A display device, comprising: a substrate in which a display area including a first area and a second area and a non-display area surrounding at least one side of the display area are defined; a sub-pixel arranged in the display area; first and second dummy pixels arranged in the non-display area; and a repair line commonly provided to the display area and the non-display area and extending in a first direction, wherein: the non-display area includes a first non-display area adjacent to the first area and a second non-display area adjacent to the second area, the repair line includes a first repair line and a second repair line arranged between a first pixel row and a second pixel row of the substrate in the first area, each of the first and second dummy pixels includes a dummy pixel circuit and a first capacitor electrically connected to the dummy pixel circuit, and the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel have different sizes.
2. 2 . The display device of claim 1 , wherein: the second dummy pixel is located closer to the first area than the first dummy pixel in the first non-display area, and the first capacitor of the first dummy pixel has a greater size than the first capacitor of the second dummy pixel.
3. 3 . The display device of claim 2 , wherein the first capacitor of each of the first and second dummy pixels includes: a lower electrode arranged on the substrate; and an upper electrode arranged on the lower electrode with an insulating layer interposed therebetween, and wherein an overlap area between the lower electrode and the upper electrode in the first dummy pixel is greater than an overlap area between the lower electrode and the upper electrode in the second dummy pixel.
4. 4 . The display device of claim 3 , wherein the dummy pixel circuit of the first dummy pixel is arranged between the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel in a plan view.
5. 5 . The display device of claim 3 , wherein the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel are arranged adjacent to each other in a plan view.
6. 6 . The display device of claim 5 , wherein the upper electrode of the first capacitor of the first dummy pixel and the upper electrode of the first capacitor of the second dummy pixel are common electrodes provided in common to the first dummy pixel and the second dummy pixel.
7. 7 . The display device of claim 2 , wherein the first repair line and the second repair line extend in the first direction, are spaced apart from each other in a second direction, and are electrically isolated from each other.
8. 8 . The display device of claim 7 , wherein: the dummy pixel circuit of the first dummy pixel is electrically connected to one of the first and second repair lines, and the dummy pixel circuit of the second dummy pixel is electrically connected to the other one of the first and second repair lines.
9. 9 . The display device of claim 8 , wherein: the dummy pixel circuit of the first dummy pixel is electrically connected to the second repair line, and the dummy pixel circuit of the second dummy pixel is electrically connected to the first repair line.
10. 10 . The display device of claim 9 , further comprising: a first bridge pattern located between the first repair line and the second repair line, extending in the second direction, and electrically connected to the first repair line; and a second bridge pattern located between the first repair line and the second repair line, extending in the second direction, and electrically connected to the second repair line.
11. 11 . The display device of claim 10 , wherein the sub-pixel includes: a pixel circuit including at least one transistor arranged on the substrate; a light-emitting element electrically connected to the transistor and emitting light; and a first contact electrode electrically connecting the light-emitting element and the transistor, wherein: the first contact electrode overlaps the first and second bridge patterns, and the first contact electrode, the first bridge pattern, and the second bridge pattern are electrically isolated from each other.
12. 12 . The display device of claim 11 , wherein pixel circuits of two sub-pixels facing each other in the second direction while interposing the first and second repair lines in the first area are mirror symmetrical relative to each other.
13. 13 . The display device of claim 10 , wherein: each of the first and second dummy pixels further includes a second contact electrode electrically connecting the dummy pixel circuit to a corresponding repair line among the first and second repair lines, the second contact electrode overlaps the first and second bridge patterns, and the second contact electrode is electrically connected to one of the first and second bridge patterns.
14. 14 . The display device of claim 1 , wherein: the repair line further includes a third repair line and a fourth repair line arranged between the first pixel row and the second pixel row in the second area, a third dummy pixel and a fourth dummy pixel are arranged in the second non-display area to correspond to the first pixel row and the second pixel row, respectively, the third dummy pixel is electrically connected to one of the third and fourth repair lines, and the fourth dummy pixel is electrically connected to the other one of the third and fourth repair lines.
15. 15 . The display device of claim 14 , wherein: each of the third and fourth dummy pixels includes the dummy pixel circuit and the first capacitor electrically connected to the dummy pixel circuit, and the first capacitor of the third dummy pixel and the first capacitor of the fourth dummy pixel have different sizes.
16. 16 . The display device of claim 15 , wherein: the third dummy pixel is located closer to the second area than the fourth dummy pixel in the second non-display area, and the first capacitor of the fourth dummy pixel has a greater size than the first capacitor of the third dummy pixel.
17. 17 . A method of repairing a display device including a substrate in which a display area including a first area and a second area and a non-display area surrounding at least one side of the first and second areas are defined, a sub-pixel arranged in the display area and including a pixel circuit, a light-emitting element, and a contact electrode electrically connected to an anode electrode of the light-emitting element, first and second repair lines arranged between a first pixel row and a second pixel row and spaced apart from each other in the display area, a first dummy pixel and a second dummy pixel arranged in the non-display area corresponding to the first pixel row and the second pixel row, respectively, and connected to the first repair line and the second repair line, first bridge patterns electrically connected to the first repair line, and second bridge patterns electrically connected to the second repair line, the method comprising: separating a first defective pixel circuit arranged in a first pixel column of the first pixel row from a first light-emitting element corresponding to the first defective pixel circuit; electrically connecting an anode electrode of the first light-emitting element to a dummy pixel circuit of the first dummy pixel by electrically connecting the contact electrode electrically connected to the anode electrode of the first light-emitting element to a corresponding first bridge pattern among the first bridge patterns; separating a second defective pixel circuit arranged in a third pixel column of the first pixel row from a second light-emitting element corresponding to the second defective pixel circuit; and electrically connecting an anode electrode of the second light-emitting element to a dummy pixel circuit of the second dummy pixel by electrically connecting the contact electrode electrically connected to the anode electrode of the second light-emitting element to a second bridge pattern among the second bridge patterns, wherein: each of the first and second dummy pixels includes a first capacitor electrically connected to the dummy pixel circuit, and the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel have different sizes.
18. 18 . The method of claim 17 , wherein: the second dummy pixel is located closer to the display area than the first dummy pixel in the non-display area, and the first capacitor of the first dummy pixel has a greater size than the first capacitor of the second dummy pixel.
19. 19 . An electronic device, comprising: a processor providing input image data to a display device; and the display device displaying an image based on the input image data, wherein the display device includes: a substrate in which a display area including a first area and a second area and a non-display area surrounding at least one side of the display area are defined; a sub-pixel arranged in the display area; a dummy pixel arranged in the non-display area; and a repair line commonly provided to the display area and the non-display area and extending in a first direction, wherein: the non-display area includes a first non-display area adjacent to the first area and a second non-display area adjacent to the second area, the repair line includes a first repair line and a second repair line arranged between a first pixel row and a second pixel row of the substrate in the first area, the dummy pixel includes a first dummy pixel and a second dummy pixel arranged in the first non-display area so as to correspond to the first pixel row and the second pixel row, respectively, each of the first and second dummy pixels includes a dummy pixel circuit and a first capacitor electrically connected to the dummy pixel circuit, and the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel have different sizes.
20. 20 . The electronic device of claim 19 , wherein: the second dummy pixel is located closer to the first area than the first dummy pixel in the first non-display area, and the first capacitor of the first dummy pixel has a greater size than the first capacitor of the second dummy pixel.

Description

This application claims priority to Korean Patent Application Number 10-2024-0157066 filed on Nov. 7, 2024, and all the benefits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference. BACKGROUND 1. Field Embodiments of the invention relate to a display device, a method of repairing the same, and an electronic device including the display device. 2. Related Art With the recent increase in interest in information display, research and development of display devices is ongoing. SUMMARY The disclosure provides a display device, a repairing method thereof, and an electronic device including the display device which can improve reliability by preventing a dark spot failure of a pixel. Aspects of some embodiments of the present disclosure include a display device including a substrate in which a display area including a first area and a second area and a non-display area surrounding at least one side of the display area are defined, a sub-pixel arranged in the display area, first and second dummy pixels arranged in the non-display area, and a repair line commonly provided to the display area and the non-display area and extending in a first direction. The non-display area includes a first non-display area adjacent to the first area and a second non-display area adjacent to the second area. The repair line includes a first repair line and a second repair line arranged between a first pixel row and a second pixel row of the substrate in the first area. Each of the first and second dummy pixels includes a dummy pixel circuit and a first capacitor electrically connected to the dummy pixel circuit. The first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel have different sizes. According to some embodiments, the second dummy pixel may be located closer to the first area than the first dummy pixel in the first non-display area, and the first capacitor of the first dummy pixel may have a greater size than the first capacitor of the second dummy pixel. According to some embodiments, the first capacitor of each of the first and second dummy pixels may include a lower electrode arranged on the substrate, and an upper electrode arranged on the lower electrode with an insulating layer interposed therebetween. An overlap area between the lower electrode and the upper electrode in the first dummy pixel may be greater than an overlap area between the lower electrode and the upper electrode in the second dummy pixel. According to some embodiments, the dummy pixel circuit of the first dummy pixel may be arranged between the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel in a plan view. According to some embodiments, the first capacitor of the first dummy pixel and the first capacitor of the second dummy pixel may be arranged adjacent to each other in a plan view. According to some embodiments, the upper electrode of the first capacitor of the first dummy pixel and the upper electrode of the first capacitor of the second dummy pixel may be common electrodes provided in common to the first dummy pixel and the second dummy pixel. According to some embodiments, the first repair line and the second repair line may extend in the first direction. The first repair line and the second repair line may be spaced apart from each other in a second direction, and may be electrically isolated from each other. According to some embodiments, the dummy pixel circuit of the first dummy pixel may be electrically connected to one of the first and second repair lines. The dummy pixel circuit of the second dummy pixel may be electrically connected to the other one of the first and second repair lines. According to some embodiments, the dummy pixel circuit of the first dummy pixel may be electrically connected to the second repair line. The dummy pixel circuit of the second dummy pixel may be electrically connected to the first repair line. According to some embodiments, the display device may further include a first bridge pattern located between the first repair line and the second repair line, extending in the second direction, and electrically connected to the first repair line, and a second bridge pattern located between the first repair line and the second repair line, extending in the second direction, and electrically connected to the second repair line. According to some embodiments, the sub-pixel may include a pixel circuit including at least one transistor arranged on the substrate, a light-emitting element electrically connected to the transistor and emitting light, and a first contact electrode electrically connecting the light-emitting element and the transistor. The first contact electrode may overlap the first and second bridge patterns. The first contact electrode, the first bridge pattern, and the second bridge pattern may be electrically isolated from each other. According to some embodiments, pix