Display device

Patent metadata

Field	Value
Publication number	US-11800770-B2
Application number	US-202016816257-A
Country	US
Kind code	B2
Filing date	Mar 12, 2020
Priority date	Jul 10, 2019
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A display device includes: a substrate including a display area and a non-display area; and a plurality of sub-pixels arranged in the display area and including portions of an electrode disposed over the display area. The plurality of sub-pixels includes a first sub-pixel and a second sub-pixel to emit light of the same color, a first portion of the electrode of the first sub-pixel has a thickness different from a thickness of a second portion of the electrode of the second sub-pixel, and the first sub-pixel has a size different from a size of the second sub-pixel.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a display area having a first area and a second area, and a non-display area having a first non-display area and a second non-display area, the first non-display area being disposed in the first area and including a transmission area; and
a plurality of independent sub-pixels arranged in the display area and including portions of an electrode disposed over the display area,
wherein the plurality of independent sub-pixels includes a first sub-pixel disposed in the first area and a second sub-pixel disposed in the second area to emit light of the same color,
a first portion of the electrode of the first sub-pixel has a thickness different from a thickness of a second portion of the electrode of the second sub-pixel, and
the first sub-pixel has a size different from a size of the second sub-pixel.

2. The display device of claim 1 , further comprising a pixel-defining layer,
wherein the electrode comprises an opposite electrode,
the first sub-pixel and the second sub-pixel further comprises pixel electrodes disposed below the opposite electrode,
the pixel-defining layer covers edges of the pixel electrodes and defines openings exposing portions of the pixel electrodes, and
the sizes of the first sub-pixel and the second sub-pixel are defined by the openings.

3. The display device of claim 1 , wherein the first area extends in a first direction.

4. The display device of claim 3 , wherein
the first area is arranged across the second area.

5. The display device of claim 3 , wherein
the electrode has a thickness in the first area greater than a thickness in the second area.

6. The display device of claim 3 , wherein the first area further extends in a second direction intersecting the first direction,
the electrode has a thickness in the first area less than a thickness in the second area.

7. The display device of claim 1 , wherein
the display area surrounds the first non-display area,
the second non-display area surrounds the display area, and
the first area is arranged between the first non-display area and the second non-display area.

8. The display device of claim 7 , wherein the first non-display area includes a first region and a second region, and
the first area is further arranged between the first region and the second region.

9. The display device of claim 1 , wherein the plurality of sub-pixels includes at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel.

10. The display device of claim 9 , wherein the plurality of sub-pixels constitutes virtual quadrangles, and
the at least one red sub-pixel, the at least one green sub-pixel, and the at least one blue sub-pixel are arranged at vertices of one of the virtual quadrangles.

11. The display device of claim 9 , wherein the plurality of sub-pixels constitutes virtual quadrangles,
the at least one red sub-pixel and the at least one blue sub-pixel are arranged at vertices of one of the virtual quadrangles to face a central point of the one of the virtual quadrangles, and
the at least one green sub-pixel is arranged at the central point of the one of the virtual quadrangles.

12. The display device of claim 9 , wherein the plurality of sub-pixels further includes a white sub-pixel,
the plurality of sub-pixels constitutes virtual quadrangles, and
the at least one red sub-pixel, the at least one green sub-pixel, the at least one blue sub-pixel, and the white sub-pixel are arranged at vertices of one of the virtual quadrangles.

13. The display device of claim 9 , wherein the red sub-pixel, the green sub-pixel, and the blue sub-pixel are arranged generally in parallel to each other.

14. A display device comprising:
a substrate including a display area having a first area and a second area, and a non-display area having a first non-display area and a second non-display area, the first non-display area being disposed in the first area and including a transmission area; and
a plurality of organic light-emitting diodes arranged in the display area and including portions of an electrode disposed over the display area,
wherein the plurality of organic light-emitting diodes includes a first organic light-emitting diode disposed in the first area and a second organic light-emitting diode disposed in the second area to emit light of the same color,
a first portion of the electrode of the first organic light-emitting diode has a thickness different from a thickness of a second portion of the electrode of the second organic light-emitting diode, and
an emission area of the first organic light-emitting diode has a size different from a size of an emission area of the second organic light-emitting diode.

15. The display device of claim 14 , further comprising a pixel-defining layer, and
wherein the electrode comprises an opposite electrode,
the plurality of organic light-emitting diodes each further includes a pixel electrode and an emission layer,
the pixel-defining layer covers edges of the pixel electrodes of the plurality of organic light-emitting diodes to define openings exposing portions of the pixel electrodes, and
emission areas of the plurality of organic light-emitting diodes are defined by the openings.

16. The display device of claim 14 , wherein
the first area extends in a first direction to be arranged across the second area.

17. The display device of claim 16 , wherein a first portion of the electrode of the first area has a thickness greater than a thickness of a second portion of the electrode of the second area.

18. The display device of claim 16 , wherein the first area further extends in a second direction intersecting the first direction extending across the second area, and
a first portion of the electrode of the first area has a thickness less than a thickness of a second portion of the electrode of the second area.

19. The display device of claim 16 , wherein
the display area surrounds the first non-display area,
the second non-display area surrounds the display area, and
the first area is disposed between the first non-display area and the second non-display area.

20. The display device of claim 14 , wherein the plurality of organic light-emitting diodes each are configured to emit light having one of red, green, and blue colors, and are arranged in a pentile matrix.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hwi
• Hwang Kyuhwan

Classifications

• H10K59/8051

  Anodes · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/8052 Primary

  Cathodes · CPC title

• H10K50/805

  Electrodes · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title