Organic light emitting display device having pixel defining layer and black matrix with openings with a curved portion

Patent metadata

Field	Value
Publication number	US-12439793-B2
Application number	US-202318341287-A
Country	US
Kind code	B2
Filing date	Jun 26, 2023
Priority date	Jul 4, 2017
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A light emitting display device comprises a substrate, a first pixel electrode disposed on the substrate, a pixel defining film disposed on the first pixel electrode and having a first opening at least partially exposing the first pixel electrode, a first organic light emitting layer disposed on the pixel defining film and overlapping with the first opening of the pixel defining film, and a black matrix disposed on the first organic light emitting layer and having a first opening overlapping with the first organic light emitting layer. Light having passed through the first opening of the black matrix is one of red light, green light, and blue light. The first opening of the black matrix may have a shape with a curved portion.

First claim

What is claimed is:

1. A light emitting display device comprising:
a substrate;
a first pixel electrode disposed on the substrate;
a pixel defining layer disposed on the first pixel electrode and including a first opening at least partially exposing the first pixel electrode;
a first light emitting layer disposed on the first pixel electrode and overlapping with the first opening of the pixel defining layer;
an insulation layer disposed on the first light emitting layer;
a black matrix disposed on the insulation layer and including a second opening overlapping with the first light emitting layer;
a second pixel electrode disposed on the same layer as the first pixel electrode:
a second light emitting layer disposed on the second pixel electrode;
a third pixel electrode disposed on the same layer as the first pixel electrode; and
a third light emitting layer disposed on the third pixel electrode,
wherein
each of the first opening of the pixel defining layer and the second opening of the black matrix has a shape with a curved portion,
the pixel defining layer further comprises a third opening at least partially exposing the second pixel electrode and overlapping the second light emitting layer,
the black matrix further comprises a fourth opening overlapping with the second light emitting layer,
the pixel defining layer further comprises a fifth opening at least partially exposing the third pixel electrode and overlapping the third light emitting layer,
the black matrix further comprises a sixth opening overlapping with the third light emitting layer, and
a shortest distance from the third opening of the pixel defining layer to the first opening of the pixel defining layer is substantially the same as a shortest distance from the third opening of the pixel defining layer to the fifth opening of the pixel defining layer.

2. The light emitting display device of claim 1 ,
wherein the shape of the second opening of the black matrix is substantially a circular shape or substantially an elliptical shape.

3. The light emitting display device of claim 1 , further comprising a color filter disposed to cover the second opening of the black matrix.

4. The light emitting display device of claim 3 , wherein the insulation layer is an encapsulation layer.

5. The light emitting display device of claim 3 , wherein a width of a region in which the black matrix overlaps with one side of the color filter ranges from 6 μm to 12 μm.

6. The light emitting display device of claim 1 , wherein each of the third opening of the pixel defining layer and the fourth opening of the black matrix has a shape with a curved portion.

7. The light emitting display device of claim 1 , wherein light having passed through the sixth opening of the black matrix and light having passed through the fourth opening of the black matrix have different colors.

8. The light emitting display device of claim 1 , further comprising:
a first color filter overlapping with the fourth opening of the black matrix; and
a second color filter overlapping with the sixth opening of the black matrix.

9. The light emitting display device of claim 8 , wherein
the first color filter is one of a red color filter, a green color filter and a blue color filter,
the second color filter is another one of a red color filter, a green color filter and a blue color filter.

10. The light emitting display device of claim 1 , wherein each of the fifth opening of the pixel defining layer and the sixth opening of the black matrix has a shape with a curved portion.

11. The light emitting display device of claim 1 , wherein the shape of the first opening of the pixel defining layer is substantially a circular shape or substantially an elliptical shape.

12. A light emitting display device comprising:
a substrate;
a first pixel electrode disposed on the substrate;
a pixel defining layer disposed on the first pixel electrode and having a first opening at least partially exposing the first pixel electrode;
a first light emitting layer disposed on the first pixel electrode and overlapping with the first opening of the pixel defining layer;
an insulation layer disposed on the first light emitting layer; and
a black matrix disposed on the insulation layer and having a second opening overlapping with the first light emitting layer,
wherein
light having passed through the second opening of the black matrix is one of red light, green light, and blue light,
the first opening of the pixel defining layer has a shape with a curved portion, and
the shape of the second opening of the black matrix is substantially a circular shape or substantially an elliptical shape.

13. The light emitting display device of claim 12 ,
wherein the shape of the first opening of the pixel defining layer is substantially a circular shape or substantially an elliptical shape.

14. The light emitting display device of claim 12 , further comprising a color filter disposed to cover the second opening of the black matrix.

15. The light emitting display device of claim 14 ,
wherein the insulation layer is an encapsulation layer.

16. The light emitting display device of claim 14 , wherein a width of a region in which the black matrix overlaps with one side of the color filter ranges from 6 μm to 12 μm.

17. The light emitting display device of claim 12 , further comprising:
a second pixel electrode disposed on the same layer as the first pixel electrode; and
a second light emitting layer disposed on the second pixel electrode, wherein
the pixel defining layer further comprises a third opening at least partially exposing the second pixel electrode and overlapping the second light emitting layer,
the black matrix further comprises a fourth opening overlapping with the second light emitting layer, and
light having passed through the fourth opening of the black matrix has a different color from the light having passed through the second opening of the black matrix.

18. A light emitting display device comprising:
a substrate;
a first pixel electrode disposed on the substrate;
a pixel defining layer disposed on the first pixel electrode and having a first opening at least partially exposing the first pixel electrode;
a first light emitting layer disposed on the first pixel electrode and overlapping with the first opening of the pixel defining layer;
an insulation layer disposed on the first light emitting layer;
a black matrix disposed on the insulation layer and having a second opening overlapping with the first light emitting layer;
a second pixel electrode disposed on the same layer as the first pixel electrode; and
a second light emitting layer disposed on the second pixel electrode,
wherein
light having passed through the second opening of the black matrix is one of red light, green light, and blue light,
the first opening of the pixel defining layer has a shape with a curved portion,
the pixel defining layer further comprises a third opening at least partially exposing the second pixel electrode and overlapping the second light emitting layer,
the black matrix further comprises a fourth opening overlapping with the second light emitting layer,
light having passed through the fourth opening of the black matrix has a different color from the light having passed through the second opening of the black matrix, and
the fourth opening of the black matrix has a shape with a curved portion.

19. The light emitting display device of claim 17 , further comprising:
a third pixel electrode dis

Assignees

• Samsung Display Co Ltd

Inventors

• Joo Sun Kyu
• Kim Byung Chul
• Kim Sung Chul
• Kim Su Jeong
• Kim In Ok
• Mun Hye Ran
• Song In Seok
• Oh Keun Chan
• Lyu Jae Jin
• Lee Yui Ku

Classifications

• H10K50/865 Primary

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K50/805

  Electrodes · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/173

  comprising banks or shadow masks · CPC title