Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2019103442-A1
Application number	US-201816139810-A
Country	US
Kind code	A1
Filing date	Sep 24, 2018
Priority date	Sep 29, 2017
Publication date	Apr 4, 2019
Grant date	—

Abstract

An organic light emitting display device includes a substrate including a white pixel region, a blue color filter pattern in a first region of the white pixel region, an overcoat layer covering the blue color filer pattern and including a micro-lens, a first electrode on the overcoat layer, an organic emitting layer covering the first electrode, and a second electrode covering the organic emitting layer.

First claim

What is claimed is:

1 . An organic light emitting display device, comprising:
a substrate including a white pixel region; a blue color filter pattern in a first region of the white pixel region; an overcoat layer covering the blue color filer pattern and including a micro-lens; a first electrode on the overcoat layer; an organic emitting layer covering the first electrode; and a second electrode covering the organic emitting layer.

2 . The organic light emitting display device according to claim 1 , wherein the white pixel region includes an emission area and a non-emission area at a periphery of the emission area, and the first region corresponds to the non-emission area.

3 . The organic light emitting display device according to claim 2 , wherein the substrate further includes a first pixel region adjacent to the white pixel region along a first direction, and
wherein the organic light emitting display device further includes a first color filter in an emission area of the first pixel region.

4 . The organic light emitting display device according to claim 3 , wherein the overcoat layer includes an indent portion in the non-emission area between the white pixel region and the first pixel region, and the second electrode is positioned in the indent portion.

5 . The organic light emitting display device according to claim 4 , further comprising:
a bank disposed in the non-emission area and covering an edge of the first electrode, wherein the bank exposes the indent portion.

6 . The organic light emitting display device according to claim 4 , wherein the second electrode in the indent portion is positioned between the first color filter and the blue color filter pattern.

7 . The organic light emitting display device according to claim 6 , wherein the first pixel region is a red pixel region, and the first color filter is a red color filter.

8 . The organic light emitting display device according to claim 4 , further comprising:
a metal line disposed between the substrate and the overcoat layer, wherein the metal line overlaps the indent portion.

9 . The organic light emitting display device according to claim 2 , wherein the first pixel region is a blue pixel region, and the first color filter is a blue color filter, and
wherein the blue color filter pattern extends from the first color filter pattern.

10 . The organic light emitting display device according to claim 9 , wherein the micro-lens is provided in the non-emission area between the white pixel region and the first pixel region and overlaps the blue color filter pattern.

11 . The organic light emitting display device according to claim 10 , wherein the micro-lens has a first aspect ratio in the non-emission area of the white pixel region and a second aspect ratio in the emission area of the white pixel region, and
wherein the first aspect ratio is smaller than the second aspect ratio.

12 . The organic light emitting display device according to claim 9 , wherein the blue color filter pattern corresponds to at least two sides of the emission area of the white pixel region.

13 . The organic light emitting display device according to claim 9 , wherein the substrate further includes a second pixel region adjacent to the white pixel region and opposite to the first pixel region, and
wherein the micro-lens in the second pixel region corresponds to the emission area of the second pixel region, and the micro-lens in the white pixel region corresponds to the emission area and the non-emission area of the white pixel region.

14 . The organic light emitting display device according to claim 13 , further comprising:
a bank disposed in the non-emission area and having an opening in correspondence to the emission area.

15 . The organic light emitting display device according to claim 14 , wherein in the second pixel region, an area of the opening is substantially equal to an area of the micro-lens, and in the white pixel region, the area of the opening is smaller than the area of the micro-lens.

16 . The organic light emitting display device according to claim 14 , wherein the bank includes an uneven surface in the non-emission area between the white pixel region and the first pixel region, and a flat surface in non-emission area between the first and second pixel regions.

17 . The organic light emitting display device according to claim 13 , wherein at least one of the overcoat layer, the organic emitting layer and the second electrode includes an uneven surface in the non-emission area between the white pixel region and the first pixel region, and a flat surface in non-emission area between the first and second pixel regions.

18 . The organic light emitting display device according to claim 1 , wherein the micro-lens has a first aspect ratio in the first region and a second aspect ratio in a second region of the white pixel region except the first region.

19 . The organic light emitting display device according to claim 1 , wherein the first region runs across the white pixel region.

20 . The organic light emitting display device according to claim 19 , further comprising:
a blue color filter in a second pixel region adjacent to the white pixel region, wherein the blue color filter pattern extends from the blue color filter.

Assignees

• Lg Display Co Ltd

Inventors

• Choi Yong-Hoon
• Jo So-Young
• Choi Min-Geun
• Yang Hee-Jung
• Kim Soo-Kang

Classifications

• H01L27/3213

  Electricity · mapped topic

• H01L51/5275

  Electricity · mapped topic

• H01L27/124

  Electricity · mapped topic

• H01L51/5221

  Electricity · mapped topic

• H01L27/322 Primary

  Electricity · mapped topic