Light emitting display device

Patent metadata

Field	Value
Publication number	US-9722007-B2
Application number	US-201514815743-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Dec 31, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

Provided is a light emitting display device.
The emitting display device comprises: a substrate including a plurality of pixels which are arranged in a first direction and a second direction that crosses the first direction, the plurality of pixels comprising a first main pixel block and a second main pixel block; a planarization pattern arranged on the substrate; a first electrode on the planarization pattern for each of the plurality of pixels; a pixel defining layer partitioning the respective pixels on the substrate and having an opening for exposing the first electrode; an organic layer on the first electrode; and a second electrode on the organic layer, wherein a thickness of the planarization pattern of the pixel in the second main pixel block is larger than a thickness of the planarization pattern of the pixel in the first main pixel block.

First claim

What is claimed is:

1. A light emitting display device comprising:
a substrate comprising a plurality of pixels arranged in a first direction and a second direction that crosses the first direction, the plurality of pixels comprising a plurality of pixel row groups that are arranged in the second direction, a first main pixel block comprising a first number of consecutive ones of the pixel row groups, and a second main pixel block comprising a second number of consecutive ones of the pixel row groups;
a planarization pattern arranged on the substrate;
a first electrode on the planarization pattern for each of the plurality of pixels;
a pixel defining layer partitioning the respective pixels on the substrate and having an opening for exposing the first electrode;
an organic layer on the first electrode; and
a second electrode on the organic layer,
wherein a thickness of the planarization pattern of the pixel in the second main pixel block is larger than a thickness of the planarization pattern of the pixel in the first main pixel block.

2. The light emitting display device of claim 1 ,
wherein heights measured from an upper surface of the substrate to an upper surface of the pixel defining layer are equal to each other in the pixel in the first main pixel block and the pixel in the second main pixel block.

3. The light emitting display device of claim 1 ,
wherein a depth of the opening of the pixel defining layer in the pixel in the second main pixel block is lower than a depth of the opening of the pixel defining layer in the pixel in the first main pixel block.

4. The light emitting display device of claim 1 ,
wherein a position of the organic layer in the pixel in the second main pixel block is higher than a position of the organic layer in the pixel in the first main pixel block.

5. The light emitting display device of claim 1 ,
wherein the planarization pattern comprises a photosensitive material.

6. The light emitting display device of claim 1 ,
wherein the first number is equal to the second number.

7. The light emitting display device of claim 1 ,
wherein the second number is smaller than the first number.

8. The light emitting display device of claim 1 , wherein the first main pixel block comprises:
a first sub-pixel block comprising a third number of consecutive ones of a plurality of pixel column groups among the first number of consecutive ones of the pixel row groups; and
a second sub-pixel block comprising a fourth number of consecutive ones of the pixel column groups among the first number of consecutive ones of the pixel row groups.

9. The light emitting display device of claim 8 ,
wherein the third number is equal to the fourth number.

10. The light emitting display device of claim 8 ,
wherein the fourth number is smaller than the third number.

11. The light emitting display device of claim 1 , wherein the second main pixel block comprises:
a third sub-pixel block comprising a fifth number of consecutive ones of a plurality of pixel column groups among the second number of consecutive ones of the pixel row groups; and
a fourth sub-pixel block comprising a sixth number of consecutive ones of the pixel column groups among the second number of consecutive ones of the pixel row groups.

12. The light emitting display device of claim 11 ,
wherein the fifth number is equal to the sixth number.

13. The light emitting display device of claim 11 , wherein the sixth number is smaller than the fifth number.

14. A light emitting display device comprising:
a substrate comprising a plurality of pixels arranged in a first direction and a second direction that crosses the first direction, the plurality of pixels comprising a first main pixel block and a second main pixel block;
a planarization pattern arranged on the substrate;
a first electrode on the planarization pattern for each of the plurality of pixels;
a pixel defining layer partitioning the respective pixels on the substrate and having an opening for exposing the first electrode;
an organic layer on the first electrode; and
a second electrode on the organic layer,
wherein an angle between an inner wall of the opening of the pixel defining layer of the pixel in the second main pixel block and the first electrode is larger than an angle that is between the inner wall of the opening of the pixel defining layer of the pixel in the first main pixel block and the first electrode.

15. The light emitting display device of claim 14 ,
wherein heights measured from an upper surface of the substrate to an upper surface of the pixel defining layer are equal to each other in the pixel in the first main pixel block and the pixel in the second main pixel block.

16. The light emitting display device of claim 14 ,
wherein thicknesses of the planarization pattern are equal to each other in the pixel in the first main pixel block and the pixel in the second main pixel block.

17. The light emitting display device of claim 14 ,
wherein an area of an upper portion of the opening of the pixel defining layer in the pixel in the second main pixel block is larger than an area of an upper portion of the opening of the pixel defining layer in the pixel in the first main pixel block.

18. The light emitting display device of claim 14 ,
wherein the pixel defining layer comprises a photosensitive material.

19. The light emitting display device of claim 14 ,
wherein the plurality of pixels comprises a plurality of row groups that are arranged in the second direction, and
wherein the first main pixel block comprises a first number of successive pixel row groups, and the second main pixel block comprises a second number of successive pixel row groups.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yool Guk
• Kim Sung Woong

Classifications

• H01L27/326 Primary

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L2251/558

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic

• H10K59/125

  including organic TFTs [OTFT] · CPC title