Display device

Patent metadata

Field	Value
Publication number	US-2022084999-A1
Application number	US-202117357800-A
Country	US
Kind code	A1
Filing date	Jun 24, 2021
Priority date	Sep 16, 2020
Publication date	Mar 17, 2022
Grant date	—

Abstract

A display device includes: a base layer including a display area including an emission area and a non-emission area adjacent to the emission area, and a non-display area around the display area; a light emitting element in the emission area on the base layer; a color filter layer located above the light emitting element; and a light blocking pattern on the light emitting element and including a first light blocking pattern in the non-emission area and a second light blocking pattern in the non-display area. The first light blocking pattern and the second light blocking pattern are different in thickness from each other.

First claim

What is claimed is:

1 . A display device comprising:
a base layer comprising:
a display area comprising:
an emission area; and
a non-emission area adjacent to the emission area, and

a non-display area around the display area;
a light emitting element in the emission area and on the base layer; a color filter layer on the light emitting element; and a light blocking pattern on the light emitting element and comprising:
a first light blocking pattern in the non-emission area, and
a second light blocking pattern in the non-display area,
wherein the first light blocking pattern and the second light blocking pattern are different in thickness from each other.

2 . The display device of claim 1 , wherein the second light blocking pattern is thinner than the first light blocking pattern in thickness.

3 . The display device of claim 1 , wherein the second light blocking pattern is 1 μm or less in thickness.

4 . The display device of claim 1 , wherein the first light blocking pattern and the second light blocking pattern are in the same layer.

5 . The display device of claim 1 , wherein the emission area comprises a first sub-emission area, a second sub-emission area, and a third sub-emission area, which are spaced apart from each other, and
wherein the color filter layer comprises a first color filter, a second color filter, and a third color filter, which are respectively in the first sub-emission area, the second sub-emission area, and the third sub-emission area.

6 . The display device of claim 5 , wherein the first light blocking pattern is between two color filters selected from among the first color filter, the second color filter, and the third color filter, or overlaps with an edge of at least one selected from among the first color filter, the second color filter, and the third color filter.

7 . The display device of claim 5 , wherein the second light blocking pattern is at a side surface of at least one color filter selected from among the first color filter, the second color filter, and the third color filter adjacent to the non-display area, or overlaps with at least a portion of the first light blocking pattern adjacent to the non-display area.

8 . The display device of claim 5 , further comprising:
a color conversion layer on one surface of the color filter layer, wherein the color conversion layer comprises:
a light scattering layer on one surface of the first color filter, and comprising light scattering particles;
a first color conversion layer on one surface of the second color filter, and comprising first color conversion particles; and
a second color conversion layer on one surface of the third color filter, and comprising second color conversion particles.

9 . The display device of claim 8 , further comprising:
an encapsulation layer on the color filter layer, wherein the color filter layer is on the color conversion layer, and wherein the encapsulation layer covers surfaces of the first color filter, the second color filter, the third color filter, the first light blocking pattern, and the second light blocking pattern.

10 . A display device comprising:
a base layer comprising:
a display area comprising:
an emission area; and
a non-emission area adjacent to the emission area, and

a non-display area around the display area;
a light emitting element in the emission area, and on the base layer; and a color filter layer in the display area and the non-display area, and on the light emitting element, wherein the color filter layer comprises:
a main color filter in the emission area, the non-emission area, and the non-display area;
an overlapping color filter overlapping with a portion of the main color filter, and being in the non-emission area; and
an auxiliary color filter overlapping with a portion of the main color filter, and being in the non-display area, and
wherein the overlapping color filter and the auxiliary color filter are different in thickness from each other.

11 . The display device of claim 10 , wherein the auxiliary color filter is thinner than the overlapping color filter in thickness.

12 . The display device of claim 10 , wherein the main color filter comprises a first color filter, a second color filter, and a third color filter, which respectively are to allow light of a first color, a second color, and a third color to be transmitted therethrough.

13 . The display device of claim 12 , wherein each of the first color, the second color, and the third color is one selected from among red, green, and blue.

14 . The display device of claim 13 , wherein the first color filter, the second color filter, and the third color filter are in the same layer.

15 . The display device of claim 14 , wherein the overlapping color filter comprises a first overlapping color filter and a second overlapping color filter, which are each to allow light of different colors to be transmitted therethrough, and
wherein the first overlapping color filter and the second overlapping color filter are on one surface of the main color filter and overlap with each other.

16 . The display device of claim 15 , wherein the first overlapping color filter is to allow light of one color selected from among the first color, the second color, and the third color to be transmitted therethrough,
the second overlapping color filter is to allow light of another color selected from among the first color, the second color, and the third color to be transmitted therethrough, and the main color filter is to allow light of the remaining color selected from among the first color, the second color, and the third color to be transmitted therethrough.

17 . The display device of claim 15 , wherein the main color filter is to allow light of the first color to be transmitted therethrough, and
the auxiliary color filter is to allow light of the second color or the third color to be transmitted therethrough.

18 . The display device of claim 15 , wherein, in the non-emission area, the main color filter, the first overlapping color filter, and the second overlapping color filter are to block light emitted from the light emitting element from being transmitted therethrough.

19 . The display device of claim 15 , further comprising:
a color conversion layer on one surface of the color filter layer, wherein the color conversion layer comprises:
a light scattering layer on one surface of the first color filter, and comprising light scattering particles;
a first color conversion layer on one surface of the second color filter, and comprising first color conversion particles; and
a second color conversion layer on one surface of the third color filter, and comprising second color conversion particles.

20 . The display device of claim 19 , further comprising:
an encapsulation layer on the color filter layer, wherein the color filter layer is on the color conversion layer, and wherein the encapsulation layer covers surfaces of the main color filter, the overlapping color filter, and the auxiliary color filter.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Eung Gyu
• Kim Jin Suek
• Park Sae Ron
• Shim Seung Bo
• Oh Ho Kil
• Jang Jae Soo

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10K59/8792

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

• H10K59/877

  comprising scattering means · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10H20/882

  Scattering means (H10H20/82 takes precedence) · CPC title