Display device

Patent metadata

Field	Value
Publication number	US-2024431185-A1
Application number	US-202418646483-A
Country	US
Kind code	A1
Filing date	Apr 25, 2024
Priority date	Jun 21, 2023
Publication date	Dec 26, 2024
Grant date	—

Abstract

Discussed is a display device including a substrate, a light emitting element positioned on the substrate, a bank dividing an emission area corresponding to the light emitting element and a non-emission area that is adjacent to the emission area, and including a first opening corresponding to the light emitting element, an encapsulation layer positioned on the light emitting element, a touch electrode positioned on the encapsulation layer, a first matrix positioned on the touch electrode and a second matrix positioned on the first matrix and having a lower refractive index than the first matrix, and a color filter positioned on the touch electrode.

First claim

What is claimed is:

1 . A display device, comprising:
a substrate; a light emitting element positioned on the substrate; a bank dividing an emission area corresponding to the light emitting element and a non-emission area that is adjacent to the emission area, and including a first opening corresponding to the light emitting element; an encapsulation layer positioned on the light emitting element; a touch electrode positioned on the encapsulation layer; a first matrix positioned on the touch electrode and a second matrix positioned on the first matrix and having a lower refractive index than the first matrix; and a color filter positioned on the touch electrode.

2 . The display device of claim 1 , wherein a width of the second matrix is smaller than a width of the first matrix.

3 . The display device of claim 1 , wherein the first matrix, the second matrix, the touch electrode, and the bank are positioned to overlap each other.

4 . The display device of claim 1 , wherein the touch electrode includes a second opening, and
wherein the first opening of the bank is overlapped with the second opening of the touch electrode.

5 . The display device of claim 4 , wherein the first matrix includes a third opening,
wherein the second matrix includes a fourth opening, and wherein the third opening of the first matrix and the fourth opening of the second matrix are overlapped with the second opening of the first touch electrode.

6 . The display device of claim 5 , wherein the third opening of the first matrix is overlapped with the fourth opening of the second matrix.

7 . The display device of claim 5 , wherein the first opening of the bank is overlapped the fourth opening of the second matrix, and
wherein the first opening of the bank is overlapped with the third opening of the first matrix.

8 . The display device of claim 1 , wherein a portion of the color filter is positioned on the first matrix, and
wherein the portion of the color filter is positioned under the second matrix.

9 . The display device of claim 1 , wherein the second matrix includes a black particle, and
wherein a weight ratio of the black particle included in the second matrix is larger than a weight ratio of a black particle included in the first matrix.

10 . The display device of claim 1 , wherein a refractive index of the first matrix is approximately 2.1 to 2.7, and
wherein a refractive index of the second matrix is approximately 1.4 to 1.8.

11 . A display device, comprising:
a first substrate including; a plurality of light emitting elements positioned on the first substrate and including a first light emitting element and a second light emitting element; a bank dividing a first emission area of the first light emitting element and a second emission area of a second light emitting element; an encapsulation layer positioned on the first light emitting element and the second light emitting element; a first matrix positioned on the encapsulation layer and a second matrix positioned on the first matrix; and a first color filter corresponding to the first emission area and a second color filter corresponding to the second emission area, on the encapsulation layer, wherein a portion of the first color filter and a portion of the second color filter are positioned on the first matrix.

12 . The display device of claim 11 , wherein the portion of the first color filter positioned on the first matrix and the portion of the second color filter positioned on the first matrix are positioned under the second matrix.

13 . The display device of claim 11 , wherein a side surface of the first color filter contacts a side surface of the second color filter, on the first matrix.

14 . The display device of claim 12 , wherein a side surface of the first color filter is spaced apart from a side surface of the second color filter on the first matrix at a spaced-apart area, and
wherein in the spaced-apart area, the second matrix contacts the first matrix.

15 . The display device of claim 12 , wherein the portion of the second color filter positioned on the first matrix is positioned on the portion of the first color filter, and
wherein an area where the second color filter and the first color filter overlap each other is positioned on the first matrix and positioned under the second matrix.

16 . The display device of claim 11 , further comprising an organic insulation layer covering the second matrix, the first color filter, and the second color filter.

17 . The display device of claim 11 , further comprising:
a second substrate on the first substrate; and an organic layer between the first substrate and the second substrate, wherein the organic layer includes a dye or a pigment.

18 . The display device of claim 17 , wherein the organic layer has adhesiveness.

19 . The display device of claim 1 , wherein the display device lacks a polarizing plate.

20 . A display device, comprising:
a substrate; a light emitting element on the substrate; a bank defining an emission area corresponding to the light emitting element; an encapsulation layer on the light emitting element; a touch electrode on the encapsulation layer; a first matrix on the touch electrode and a second matrix on the first matrix and having a different lower refractive index from that of the first matrix; and a color filter interposed between the first matrix and the second matrix over the touch electrode.

Assignees

• Lg Display Co Ltd

Inventors

• Shin Youngsub
• Kim Younghoon

Classifications

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/122 Primary

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

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/50 Primary

  OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements · CPC title

• H10K59/873

  Encapsulations · CPC title