CN-122003049-A - Display device, repairing method thereof and electronic device with display device

Abstract

The present disclosure relates to a display device, a method of repairing a display device, and an electronic device including a display device. The display device includes a substrate in which a display region including a first region and a second region and a non-display region surrounding at least one side of the display region are defined, a sub-pixel disposed in the display region, a first dummy pixel and a second dummy pixel disposed in the non-display region, and a repair line commonly disposed in the display region and the non-display region 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 disposed between the first pixel row and the second pixel row in the first region. Each of the first dummy pixel and the second dummy pixel includes 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.

Inventors

• CUI ZHONGXUAN

Assignees

• 三星显示有限公司

Dates

Publication Date

20260508

Application Date

20251031

Priority Date

20241107

Claims (20)

1. 1. A display device, comprising: A substrate in which a display region including a first region and a second region and a non-display region surrounding at least one side of the display region are defined; a subpixel disposed in the display region; A first dummy pixel and a second dummy pixel arranged in the non-display region, and Repair lines commonly provided to the display region and the non-display region 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 disposed between a first pixel row and a second pixel row of the substrate in the first region, Each of the first dummy pixel and the second dummy pixel 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 according to claim 1, wherein: the second dummy pixel is positioned closer to the first region than the first dummy pixel in the first non-display region, and The first capacitor of the first dummy pixel has a larger size than the first capacitor of the second dummy pixel.
3. 3. The display device according to claim 2, wherein the first capacitor of each of the first dummy pixel and the second dummy pixel includes: A lower electrode disposed on the substrate, and An upper electrode disposed on the lower electrode with an insulating layer interposed therebetween, an Wherein an overlapping area between the lower electrode and the upper electrode in the first dummy pixel is larger than an overlapping area between the lower electrode and the upper electrode in the second dummy pixel.
4. 4. A display device according to 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. A display device according to 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 according to 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 commonly provided 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 according to claim 7, wherein: the dummy pixel circuit of the first dummy pixel is electrically connected to one of the first repair line and the second repair line, and The dummy pixel circuit of the second dummy pixel is electrically connected to the other of the first repair line and the second repair line.
9. 9. The display device according to 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 according to 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 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 comprises: 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 bridge pattern and the second bridge pattern, 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 according to claim 11, wherein the pixel circuits of two sub-pixels facing each other in the second direction while interposing the first repair line and the second repair line therebetween in the first region are mirror-symmetrical to each other.
13. 13. The display device according to claim 10, wherein: Each of the first dummy pixel and the second dummy pixel further includes a second contact electrode electrically connecting the dummy pixel circuit to a corresponding repair line among the first repair line and the second repair line, The second contact electrode overlaps the first bridge pattern and the second bridge pattern, and The second contact electrode is electrically connected to one of the first bridge pattern and the second bridge pattern.
14. 14. The display device according to claim 1, wherein: The repair line further includes a third repair line and a fourth repair line disposed between the first pixel row and the second pixel row in the second region, Third dummy pixels and fourth dummy pixels are arranged in each of the first pixel row and the second pixel row in the second non-display region, The third dummy pixel is electrically connected to one of the third repair line and the fourth repair line, and The fourth dummy pixel is electrically connected to the other of the third repair line and the fourth repair line.
15. 15. The display device according to claim 14, wherein: Each of the third dummy pixel and the fourth dummy pixel 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 according to claim 15, wherein: The third dummy pixel is positioned closer to the second region than the fourth dummy pixel in the second non-display region, and The first capacitor of the fourth dummy pixel has a larger 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 region including a first region and a second region and a non-display region surrounding at least one side of the first region and the second region are defined, a subpixel disposed in the display region 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 disposed between the first and second pixel rows in the display region and spaced apart from each other, first and second dummy pixels disposed in each of the first and second pixel rows in the non-display region and connected to one of the first and second repair lines, respectively, a first bridge pattern electrically connected to the first and second repair lines, and a second bridge pattern electrically connected to the second repair line, the method including: 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 the 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 the anode electrode of the second light emitting element to the 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 corresponding second bridge pattern among the second bridge patterns, Wherein each of the first dummy pixel and the second dummy pixel 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 according to claim 17, wherein: The second dummy pixel is positioned 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 larger size than the first capacitor of the second dummy pixel.
19. 19. An electronic device, comprising: a processor for providing the input image data to the display device, and The display device displays an image based on the input image data, Wherein the display device includes: a substrate in which a display region including a first region and a second region and a non-display region surrounding at least one side of the display region are defined; a subpixel disposed in the display region; A dummy pixel arranged in the non-display region, and Repair lines commonly provided to the display region and the non-display region 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 disposed between a first pixel row and a second pixel row of the substrate in the first region, The dummy pixels include first and second dummy pixels arranged in each of the first and second pixel rows in the first non-display region, Each of the first dummy pixel and the second dummy pixel 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 positioned closer to the first region than the first dummy pixel in the first non-display region, and The first capacitor of the first dummy pixel has a larger size than the first capacitor of the second dummy pixel.

Description

Display device, repairing method thereof and electronic device with display device Cross Reference to Related Applications The present application claims priority from korean patent application No. 10-2024-0157066 filed on 7 of 11.2024, the contents of which are incorporated herein by reference in their entirety. Technical Field Embodiments of the invention relate to a display device, a method of repairing a display device, and an electronic device including a display device. Background With the recent increase in interest in information display, research and development of display devices are continuously underway. Disclosure of Invention The present disclosure provides a display device capable of improving reliability by preventing a dark spot failure of a pixel, a repair method thereof, and an electronic device including the display device. Aspects of some embodiments of the present disclosure include a display device including a substrate in which a display region including a first region and a second region and a non-display region surrounding at least one side of the display region are defined, a subpixel disposed in the display region, a first dummy pixel and a second dummy pixel disposed in the non-display region, and a repair line commonly disposed in the display region and the non-display region 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 disposed between a first pixel row and a second pixel row of the substrate in the first region. Each of the first dummy pixel and the second dummy pixel 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 positioned closer to the first region than the first dummy pixel in the first non-display region, and the first capacitor of the first dummy pixel may have a larger 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 disposed on the substrate and an upper electrode disposed on the lower electrode with an insulating layer interposed therebetween. An overlapping area between the lower electrode and the upper electrode in the first dummy pixel may be larger than an overlapping 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 a common electrode commonly disposed 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 a first direction. The first repair line and the second repair line may be spaced apart from each other in the 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 repair line and the second repair line. The dummy pixel circuit of the second dummy pixel may be electrically connected to the other of the first repair line and the second repair line. 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 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 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, a subpixel may include a pixel circuit including at least one transistor disposed on a 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 bridge pattern and th