Display device

Patent metadata

Field	Value
Publication number	US-12575301-B2
Application number	US-202017904469-A
Country	US
Kind code	B2
Filing date	Jul 2, 2020
Priority date	Feb 21, 2020
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A display device includes a display panel, first and second insulating layers, and a high refractive insulating layer. The display panel includes emission areas and a non-emission area. The first insulating layer is disposed on the display panel, and first openings are defined in the first insulating layer. Second openings, corresponding to the first openings, are defined in the second insulating layer having a refractive index greater than that of the first insulation layer. The high refractive insulating layer has a refractive index greater than that of the second insulating layer. The high refractive insulating layer is disposed on the first and second insulating layers. The first insulating layer includes a first inclined surface defining the first openings, and the second insulating layer includes a second inclined surface defining the second openings. The first inclined surface and the second inclined surface are spaced apart from each other.

First claim

The invention claimed is:

1 . A display device, comprising:
a display panel comprising a plurality of emission areas and a non-emission area defined between emission areas of the plurality of emission areas; a first insulating layer disposed on the display panel and having a first refractive index and a plurality of first openings defined in an area overlapping the plurality of emission areas; a second insulating layer having a second refractive index and a plurality of second openings defined in an area corresponding to the plurality of first openings; and a high refractive insulating layer disposed on the first and second insulating layers, overlapping the plurality of emission areas, and having a third refractive index that is greater than each of the first and second refractive indexes, wherein the first insulating layer comprises a first inclined surface that defines the plurality of first openings, and the second insulating layer comprises a second inclined surface that defines the plurality of second openings, wherein the first inclined surface and the second inclined surface are spaced apart from each other, wherein the first inclined surface of the first insulating layer is fully covered by the second insulating layer, and wherein the first and second inclined surfaces are completely disposed on the non-emission area without extending into the emission areas.

2 . The display device of claim 1 , wherein the second insulating layer is disposed on the first insulating layer and covers a top surface of the first insulating layer and the first inclined surface of the first insulating layer.

3 . The display device of claim 2 , wherein the second refractive index is greater than the first refractive index.

4 . The display device of claim 2 , wherein the first inclined surface has a height that is less than a height of the second inclined surface.

5 . The display device of claim 2 , further comprising a third insulating layer having a fourth refractive index, the third insulating layer including a plurality of third openings defined in an area corresponding to the plurality of second openings.

6 . The display device of claim 5 , wherein the third insulating layer comprises a third inclined surface that defines the plurality of third openings, and
wherein the third inclined surface is spaced apart from the first and second inclined surfaces.

7 . The display device of claim 6 , wherein the third insulating layer covers a top surface of the second insulating layer and the second inclined surface.

8 . The display device of claim 7 , wherein the fourth refractive index is greater than the second refractive index, the second refractive index is greater than the first refractive index, and the third refractive index is greater than the fourth refractive index.

9 . The display device of claim 7 , wherein the third inclined surface has a height that is greater than a height of each of the first and second inclined surfaces.

10 . The display device of claim 1 , wherein the second insulation layer covers the first inclined surface of the first insulating layer and does not cover a top surface of the first insulating layer, and
wherein a height of the first inclined surface is equal to a height of the second inclined surface.

11 . The display device of claim 10 , wherein the second refractive index is greater than the first refractive index.

12 . The display device of claim 10 , further comprising a third insulating layer having a fourth refractive index, wherein a plurality of third openings are defined in an area corresponding to the plurality of second openings.

13 . The display device of claim 12 , wherein the third insulation layer covers the second inclined surface of the second insulating layer and does not cover a top surface of each of the first and second insulating layers, and
wherein a height of the third inclined surface is equal to a height of each of the first and second inclined surfaces.

14 . The display device of claim 13 , wherein the fourth refractive index is greater than the second refractive index, the second refractive index is greater than the first refractive index, and the third refractive index is greater than the fourth refractive index.

15 . The display device of claim 1 , wherein each of the plurality of first openings has a size that is greater than that of each of the plurality of second openings.

16 . The display device of claim 15 , wherein the high refractive insulating layer fills each of the plurality of second openings.

17 . The display device of claim 1 , further comprising:
a first conductive layer disposed on the display panel; and a second conductive layer disposed on the first conductive layer.

18 . The display device of claim 17 , further comprising an interlayer insulating layer disposed between the first conductive layer and the second conductive layer,
wherein the first insulating layer is disposed on the second conductive layer.

19 . The display device of claim 18 , wherein the first conductive layer comprises a connection part, the second conductive layer comprises sensor parts, a contact hole is defined in the first insulating layer, and the connection part is electrically connected to the sensor parts.

20 . The display device of claim 19 , wherein each of the sensor parts has a mesh shape, and the sensor parts do not overlap the plurality of emission areas.

21 . The display device of claim 17 , wherein the first insulating layer is disposed between the first conductive layer and the second conductive layer.

22 . The display device of claim 19 , wherein the second insulating layer is disposed on the second conductive layer and covers the second conductive layer.

23 . The display device of claim 1 , wherein each of the first insulating layer, the second insulating layer, and the high refractive insulating layer comprises an organic insulating material.

24 . An electronic device, comprising:
a display panel comprising a plurality of emission areas and a non-emission area defined between emission areas of the plurality of emission areas; a first insulating layer disposed on the display panel and having a first refractive index and a plurality of first openings defined in an area overlapping the plurality of emission areas; a second insulating layer having a second refractive index and a plurality of second openings defined in an area corresponding to the plurality of first openings; and a high refractive insulating layer disposed on the first and second insulating layers, overlapping the plurality of emission areas, and having a third refractive index that is greater than each of the first and second refractive indexes, wherein the first insulating layer comprises a first inclined surface that defines the plurality of first openings, and the second insulating layer comprises a second inclined surface that defines the plurality of second openings, wherein the first inclined surface and the second inclined surface are spaced apart from each other, wherein the second insulating layer is disposed on the first insulating layer and covers a top surface of the first insulating layer and the first inclined surface of the first insulating layer, and wherein the first inclined surface has a height that is less than a height of the second inclined surface.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Taegyun
• Park Junhong
• Chun Jun
• JUNG Euisuk
• Jung Hyunyoung

Classifications

• H10K50/858

  comprising refractive means, e.g. lenses · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• H10K59/35

  comprising red-green-blue [RGB] subpixels · CPC title