Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-10854687-B2
Application number	US-201815898346-A
Country	US
Kind code	B2
Filing date	Feb 16, 2018
Priority date	Jul 4, 2017
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

An organic light emitting display device comprising: 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. An organic light emitting display device comprising:
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, wherein
light having passed through the first opening of the black matrix is one of red light, green light, and blue light, and
the first opening of the black matrix has a circular shape which is composed of assemblies of dots that are spaced a same distance apart from a virtual center point of the first opening of the black matrix.

2. The organic light emitting display device of claim 1 , wherein the first opening of the black matrix has a smaller area than the first opening of the pixel defining film.

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

4. The organic light emitting display device of claim 3 , further comprising an encapsulation layer disposed on the pixel defining film, wherein the black matrix and the color filter are disposed on the encapsulation layer.

5. The organic 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 organic light emitting display device of claim 1 , wherein the first opening of the pixel defining film is substantially circular.

7. The organic light emitting display device of claim 1 , further comprising:
a second pixel electrode disposed on the same layer as the first pixel electrode; and
a second organic light emitting layer disposed on the pixel defining film and overlapping with the second pixel electrode, wherein
the pixel defining film further comprises a second opening at least partially exposing the second pixel electrode,
the black matrix further comprises a second opening overlapping with the second organic light emitting layer, and
light having passed through the second opening of the black matrix has a different display color from the light having passed through the first opening of the black matrix.

8. The organic light emitting display device of claim 7 , wherein the second opening of the black matrix has a shape with a curved portion.

9. The organic light emitting display device of claim 7 , further comprising:
a third pixel electrode disposed on the same layer as the first pixel electrode; and
a third organic light emitting layer disposed on the pixel defining film and overlapping with the third pixel electrode, wherein
the pixel defining film further comprises a third opening at least partially exposing the third pixel electrode,
the black matrix further comprises a third opening overlapping with the third organic light emitting layer, and
light having passed through the third opening of the black matrix, the light having passed through the first opening of the black matrix, and the light having passed through the second opening of the black matrix have different display colors.

10. The organic light emitting display device of claim 9 , wherein a shortest distance from the second opening of the pixel defining film to the first opening of the pixel defining film is the same as a shortest distance from the second opening of the pixel defining film to the third opening of the pixel defining film.

11. The organic light emitting display device of claim 9 , further comprising a first color filter layer disposed on the black matrix and including a first opening overlapping with the first opening of the black matrix and a second opening overlapping with the second opening of the black matrix, wherein
the first color filter layer overlaps with the third opening of the black matrix and surrounds the first opening of the black matrix and the second opening of the black matrix.

12. The organic light emitting display device of claim 11 , wherein the first color filter layer is a blue color filter layer for transmitting blue light.

13. The organic light emitting display device of claim 11 , further comprising:
a first color filter overlapping with the first opening of the first color filter layer; and
a second color filter overlapping with the second opening of the first color filter layer.

14. The organic light emitting display device of claim 11 , further comprising a second color filter layer disposed on the first color filter layer and overlapping with the first opening of the black matrix, wherein
the second color filter layer surrounds the second opening of the first color filter layer.

15. The organic light emitting display device of claim 9 , further comprising:
a first color filter overlapping with the first opening of the black matrix;
a second color filter overlapping with the second opening of the black matrix; and
a first color filter layer disposed on the first color filter and the second color filter, wherein
the first color filter layer overlaps with the third opening of the black matrix and surrounds the first opening of the black matrix and the second opening of the black matrix.

16. An organic light emitting display device comprising:
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, wherein
the first opening of the black matrix has a smaller area than the first opening of the pixel defining film, and
the first opening of the black matrix has a circular shape which is composed of assemblies of dots that are spaced a same distance apart from a virtual center point of the first opening of the black matrix.

17. The organic light emitting display device of claim 16 , wherein the first opening of the pixel defining film is substantially circular.

18. The organic light emitting display device of claim 16 , wherein light having passed through the first opening of the black matrix is one of red light, green light, and blue light.

19. The organic light emitting display device of claim 16 , further comprising a first color filter disposed to cover the first opening of the black matrix, 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.

20. The organic light emitting display device of claim 16 , further comprising a second pixel electrode and a third pixel electrode disposed on the same layer as the first pixel electrode, wherein
the pixel defining film further comprises a second opening at least partially exposing the second pixel electrode and a third opening at least partially exposing the third pixel electrode,
the black matrix further comprises a second opening overlapping with the second pixel electrode and a third opening overlapping with the third pixel electrode, and
light having passed through the first opening of

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

• H10K59/122 Primary

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

• H10K59/8792

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