Flexible color filter substrate and flexible light emitting display apparatus including the same

Patent metadata

Field	Value
Publication number	US-2019066545-A1
Application number	US-201816045141-A
Country	US
Kind code	A1
Filing date	Jul 25, 2018
Priority date	Aug 28, 2017
Publication date	Feb 28, 2019
Grant date	—

Abstract

Disclosed are a flexible color filter substrate and a flexible light emitting display apparatus including the same, in which a black matrix pattern is prevented from being formed abnormally or lost. The flexible color filter substrate includes a buffer layer on a flexible substrate, a black matrix pattern on the buffer layer to define a plurality of pixel openings, and an intermediate layer between the black matrix pattern and the buffer layer.

First claim

What is claimed is:

1 . A flexible color filter substrate comprising:
a flexible substrate; a buffer layer on the flexible substrate; a black matrix pattern on the buffer layer to define a plurality of pixel openings; an intermediate layer between the black matrix pattern and the buffer layer; and a color filter layer in each of the plurality of pixel openings.

2 . The flexible color filter substrate of claim 1 , wherein the intermediate layer comprises a hydrophobic material.

3 . The flexible color filter substrate of claim 1 , wherein the buffer layer comprises at least one inorganic layer including an inorganic material, and
wherein the intermediate layer comprises an organic material.

4 . The flexible color filter substrate of claim 3 , wherein the intermediate layer comprises at least one organic material of acryl resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, benzocyclobutene resin, and fluorine resin.

5 . The flexible color filter substrate of claim 3 , wherein the intermediate layer comprises a fluoridation-processed organic material.

6 . The flexible color filter substrate of claim 1 , wherein the color filter layer directly contacts the buffer layer overlapping each of the plurality of pixel openings.

7 . The flexible color filter substrate of claim 1 , further comprising a plurality of white openings defined by the black matrix pattern,
wherein three adjacent pixel openings of the plurality of pixel openings configure one unit pixel area, wherein each of the plurality of white openings is in a corresponding unit pixel area of a plurality of unit pixel areas, and wherein the color filter layer is in other pixel openings except the plurality of white openings.

8 . The flexible color filter substrate of claim 7 , further comprising a plurality of transmissive parts defined by the black matrix pattern,
wherein each of the plurality of transmissive parts is in a corresponding unit pixel area of the plurality of unit pixel areas, and wherein the color filter layer is in other pixel openings except the plurality of transmissive parts.

9 . The flexible color filter substrate of claim 1 , further comprising a plurality of transmissive parts defined by the black matrix pattern,
wherein three adjacent pixel openings of the plurality of pixel openings configure one unit pixel area, wherein each of the plurality of transmissive parts is in a corresponding unit pixel area of a plurality of unit pixel areas, and wherein the color filter layer is in other pixel openings except the plurality of transmissive parts.

10 . A flexible light emitting display apparatus comprising:
a lower substrate including a pixel array layer; an upper substrate including a color filter; and a transparent adhesive layer between the lower substrate and the upper substrate, wherein the upper substrate includes the flexible color filter substrate of claim 1 .

11 . The flexible light emitting display apparatus of claim 10 , wherein the pixel array layer comprises a plurality of unit pixel areas each including first to fourth subpixel areas each including a circuit area and an emission area,
wherein each of the plurality of pixel openings defined on the upper substrate overlaps the emission area of each of the first to third subpixel areas, wherein the upper substrate further comprises a plurality of white openings defined by the black matrix pattern to overlap the emission area of the fourth subpixel area in each of the plurality of unit pixel areas, and wherein the color filter layer is provided in other pixel openings except the plurality of white openings.

12 . The flexible light emitting display apparatus of claim 11 , wherein the transparent adhesive layer directly contacts the buffer layer overlapping each of the plurality of white openings.

13 . The flexible light emitting display apparatus of claim 11 , wherein each of the plurality of unit pixel areas defined by the pixel array layer further comprises a transmissive area adjacent to the first to fourth subpixel areas,
wherein the upper substrate further comprises a plurality of transmissive parts defined by the black matrix pattern to overlap the transmissive area provided in each of the plurality of unit pixel areas, and wherein the color filter layer is in other pixel openings except the plurality of transmissive parts.

14 . The flexible light emitting display apparatus of claim 13 , wherein the transparent adhesive layer directly contacts the buffer layer overlapping each of the plurality of transmissive parts.

15 . The flexible light emitting display apparatus of claim 10 , wherein the pixel array layer comprises a plurality of unit pixel areas each including first to third subpixel areas, each including a circuit area and an emission area, and a transmissive area adjacent to the first to third subpixel areas,
wherein each of the plurality of pixel openings defined on the upper substrate overlaps the emission area of each of the first to third subpixel areas, wherein the upper substrate further comprises a plurality of transmissive parts defined by the black matrix pattern to overlap the transmissive area provided in each of the plurality of unit pixel areas, and wherein the color filter layer is in other pixel openings except the plurality of transmissive parts.

16 . The flexible light emitting display apparatus of claim 15 , wherein the transparent adhesive layer directly contacts the buffer layer overlapping each of the plurality of transmissive parts.

17 . A flexible color filter substrate comprising:
a flexible substrate; a buffer layer on the flexible substrate; a black matrix pattern on the buffer layer to define a plurality of pixel openings, the black matrix pattern not directly contacting the buffer layer; and a color filter layer in each of the plurality of pixel openings.

18 . The flexible color filter substrate of claim 17 , further comprising an intermediate layer between the black matrix pattern and the buffer layer.

19 . The flexible color filter substrate of claim 18 , wherein the intermediate layer comprises a hydrophobic material.

20 . The flexible color filter substrate of claim 18 , wherein the buffer layer comprises at least one inorganic layer including an inorganic material, and
wherein the intermediate layer comprises an organic material.

Assignees

• Lg Display Co Ltd

Inventors

• Jung Hyunju
• Kim Miae

Classifications

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G02B5/201 Primary

  in the form of arrays · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G03F7/0007

  Filters, e.g. additive colour filters; Components for display devices · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title