Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2026007025-A1
Application number	US-202519322060-A
Country	US
Kind code	A1
Filing date	Sep 8, 2025
Priority date	Jul 4, 2017
Publication date	Jan 1, 2026
Grant date	—

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, a second pixel electrode and a third pixel electrode disposed on the substrate; a pixel defining layer disposed on the first pixel electrode, the second pixel electrode and the third pixel electrode, the pixel defining layer including a first opening at least partially exposing the first pixel electrode, a second opening at least partially exposing the second pixel electrode, and a third opening at least partially exposing the third pixel electrode; a first light emitting layer disposed on the first pixel electrode and overlapping with the first opening of the pixel defining layer; a second light emitting layer disposed on the second pixel electrode and overlapping with the second opening of the pixel defining layer; a third light emitting layer disposed on the third pixel electrode and overlapping with the third opening of the pixel defining layer; a common electrode disposed on the first light emitting layer, the second light emitting layer and the third light emitting layer; an insulation layer disposed on the common electrode; a black matrix disposed on the insulation layer, the black matrix including a fourth opening overlapping with the first light emitting layer, a fifth opening overlapping with the second light emitting layer, and a sixth opening overlapping with the third light emitting layer; a first color filter overlapping with the fourth opening of the black matrix; a second color filter overlapping with the fifth opening of the black matrix; and a third color filter overlapping with the sixth opening of the black matrix, wherein the fourth opening of the black matrix has a shape with a curved portion, and the light emitting display device does not include a polarizing plate.

2 . The light emitting display device of claim 1 , wherein the common electrode is a cathode electrode.

3 . The light emitting display device of claim 1 , wherein the common electrode includes one or more selected from the group consisting of Li, Ca, LiF/Ca, LiF/Al, Al, Ag, Mg, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In 2 O 3 ), indium gallium oxide (IGO), and aluminum zinc oxide (AZO).

4 . The light emitting display device of claim 1 , wherein the substrate is a flexible substrate.

5 . The light emitting display device of claim 1 , further comprising:
a plurality of thin-film transistors disposed on the substrate, wherein the plurality of thin-film transistors includes at least one of oxide semiconductor and low temperature polysilicon (LTPS).

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

7 . The light emitting display device of claim 1 , wherein the insulation layer is an encapsulation layer.

8 . The light emitting display device of claim 1 , wherein a width of a region in which the black matrix overlaps with one side of the first color filter ranges from 6 μm to 12 μm.

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

10 . The light emitting display device of claim 1 , wherein
an area of the fourth opening of the black matrix is different from an area of the fifth opening of the black matrix.

11 . The light emitting display device of claim 10 , 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.

12 . The light emitting display device of claim 11 , wherein
the second color filter is a green color filter, and the area of the fifth opening of the black matrix is smaller than the area of the fourth opening of the black matrix.

13 . 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; a common electrode disposed on the first light emitting layer; an insulation layer disposed on the common electrode; a black matrix disposed on the insulation layer and having a second opening overlapping with the first light emitting layer; and a color filter disposed to cover the second opening of the black matrix, wherein light having passed through the second opening of the black matrix is one of red light, green light, and blue light, the second opening of the black matrix has a shape with a curved portion, and the light emitting display device does not include a polarizing plate.

14 . The light emitting display device of claim 13 ,
wherein the first opening of the pixel defining layer has a shape with a curved portion.

15 . The light emitting display device of claim 13 ,
wherein the insulation layer is an encapsulation layer.

16 . The light emitting display device of claim 13 , 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 13 , further comprising:
a second pixel electrode disposed on the same layer as the first pixel electrode; a second light emitting layer disposed between the second pixel electrode and the common electrode; a third pixel electrode disposed on the same layer as the first pixel electrode; and a third light emitting layer disposed between the third pixel electrode and the common 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, the pixel defining layer further comprises a fifth opening at least partially exposing the third pixel electrode and overlapping the third light emitting layer, and the black matrix further comprises a sixth opening overlapping with the third light emitting layer, the first light emitting layer emits light of a first color, the second light emitting layer emits light of a second color different from the first color, the third light emitting layer emits light of a color different from the second color, 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.

18 . A light emitting display device comprising:
a substrate; a first pixel electrode and a second pixel electrode disposed on the substrate; a pixel defining layer disposed on the first pixel electrode and the second pixel electrode, the pixel defining layer comprising 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; a seco

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