Display apparatus

Patent metadata

Field	Value
Publication number	US-11037997-B2
Application number	US-202016849497-A
Country	US
Kind code	B2
Filing date	Apr 15, 2020
Priority date	May 8, 2019
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A display apparatus includes a substrate including a display area configured by a plurality of emission areas and a non-emission area between the plurality of emission areas; an encapsulation part which covers a display area; a touch part including a plurality of insulating layers disposed on the encapsulation part and a touch line in the non-emission area; and a plurality of light extraction patterns disposed between the touch line and the plurality of emission areas, in which the plurality of light extraction patterns includes grooves at at least a portion of the plurality of insulating layers.

First claim

What is claimed is:

1. A display apparatus, comprising:
a substrate including a display area having a plurality of emission areas and a non-emission area between the plurality of emission areas;
an encapsulation part that covers the display area;
a touch part including a plurality of insulating layers on the encapsulation part and a touch line in the non-emission area; and
a plurality of light extraction patterns between the touch line and the plurality of emission areas,
wherein the plurality of light extraction patterns includes grooves at at least a portion of the plurality of insulating layers.

2. The display apparatus of claim 1 , wherein each of the plurality of light extraction patterns includes:
a first surface being adjacent to the plurality of emission areas in the non-emission area; and
a second surface between the first surface and the touch line in the non-emission area, and
wherein a width between the first surface and the second surface decreases as approaching the substrate.

3. The display apparatus of claim 2 , wherein for each of at least one of the plurality of light extraction patterns, an upper side of the first surface is adjacent to the plurality of emission areas, and a lower side of the first surface is closer to the touch line than the upper side of the first surface.

4. The display apparatus of claim 2 , wherein for each of at least one of the plurality of light extraction patterns, a length from an upper side to a lower side of the first surface is longer than a length from an upper side to a lower side of the second surface.

5. The display apparatus of claim 2 , wherein an angle between the first surface and an upper surface of the encapsulation part is smaller than an angle between the second surface and the upper surface of the encapsulation part.

6. The display apparatus of claim 2 , wherein the plurality of light extraction patterns has a closed loop shape that surrounds each of the plurality of emission areas.

7. The display apparatus of claim 2 , wherein for each of at least one of the plurality of light extraction patterns, each of the first surface and the second surface is one of a plane surface or a curved surface.

8. The display apparatus of claim 2 , wherein the plurality of insulating layers includes:
a first inorganic insulating layer on the encapsulation part;
a second inorganic insulating layer on the first inorganic insulating layer; and
an organic insulating layer on the second inorganic insulating layer configured to fill an inner portion of the plurality of light extraction patterns, and
wherein the plurality of light extraction patterns is disposed at the second inorganic insulating layer.

9. The display apparatus of claim 8 , wherein the plurality of light extraction patterns is disposed at the first inorganic insulating layer and the second inorganic insulating layer, and
the first surface and the second surface include a side surface of the first inorganic insulating layer and a side surface of the second inorganic insulating layer.

10. The display apparatus of claim 8 , wherein the encapsulation part includes:
an inorganic encapsulation layer under the first inorganic insulating layer; and
an organic encapsulation layer under the inorganic encapsulation layer,
wherein the plurality of light extraction patterns is disposed at the first inorganic insulating layer, the second inorganic insulating layer, and the inorganic encapsulation layer, and
wherein the first surface and the second surface include a side surface of the first inorganic insulating layer, a side surface of the second inorganic insulating layer, and a side surface of the inorganic encapsulation layer.

11. The display apparatus of claim 10 , wherein a refractive index of at least one among the inorganic encapsulation layer, the first inorganic insulating layer, and the second inorganic insulating layer is larger than a refractive index of the organic insulating layer.

12. A display apparatus, comprising:
a substrate having a plurality of emission areas and a non-emission area between the plurality of emission areas;
an encapsulation part that covers the substrate;
a touch part on the encapsulation part; and
a plurality of light extraction patterns disposed to surround the plurality of emission areas in the non-emission area,
wherein a width of the plurality of light extraction patterns decreases as approaching the substrate, and
wherein the plurality of light extraction patterns extracts at least a portion of light that is directed from the plurality of emission areas to the non-emission area, to a front direction of the substrate.

13. The display apparatus of claim 12 , wherein the touch part includes:
a touch line in the non-emission area;
a first inorganic insulating layer on the encapsulation part;
a second inorganic insulating layer on the first inorganic insulating layer; and
an organic insulating layer on the second inorganic insulating layer, and
wherein the plurality of light extraction patterns is disposed between the touch line and the plurality of emission areas at the second inorganic insulating layer.

14. The display apparatus of claim 13 , wherein the plurality of light extraction patterns extends to the first inorganic insulating layer from the second inorganic insulating layer.

15. The display apparatus of claim 13 , wherein the encapsulation part includes:
an inorganic encapsulation layer being in contact with the first inorganic insulating layer; and
an organic encapsulation layer under the inorganic encapsulation layer, and
wherein the plurality of light extraction patterns extends to the first inorganic insulating layer and the inorganic encapsulation layer from the second inorganic insulating layer.

16. The display apparatus of claim 13 , wherein the plurality of light extraction patterns includes:
a first surface that is disposed to be most adjacent to the plurality of emission areas, and
an upper side of the first surface is closer to the plurality of emission areas than a lower side of the first surface.

17. The display apparatus of claim 13 , wherein refractive indexes of the inorganic encapsulation layer, the first inorganic insulating layer, and the second inorganic insulating layer are larger than a refractive index of the organic insulating layer, and
wherein the plurality of light extraction patterns is configured to lower an incident angle of at least some of light that is directed to the organic insulating layer from the inorganic encapsulation layer, the first inorganic insulating layer, and the second inorganic insulating layer.

18. A display apparatus, comprising:
a substrate including a display area having a plurality of emission areas and a non-emission area between the plurality of emission areas;
an encapsulation part that covers the substrate; and
a plurality of light extraction patterns, each of the plurality of light extraction patterns disposed to surround a corresponding one of the plurality of emission areas in the non-emission area,
wherein a width of the plurality of light extraction patterns decreases as approaching the substrate, and
wherein the plurality of light extraction patterns extracts at least a portion of light that is directed from the plurality of emission areas to the non-emission area to a front direction of the substrate.

19. The display apparatus of claim 18 , wherein the plurality of light extraction patterns has a closed loop shape that surrounds corresponding one of the plurality of emission area

Assignees

• Lg Display Co Ltd

Inventors

• Koo Wonhoe
• Sim Dongmin
• Han Kyunghoon

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• H10K59/879 Primary

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

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title