IP Library Granted Patent US 11,037,997
Granted Patent B2
US 11,037,997 · App. 16/849,497 · Granted Jun 15, 2021

Display apparatus

Inventors: Wonhoe Koo (Goyang-si, KR); Dongmin Sim (Gimpo-si, KR); Kyunghoon Han (Seoul, KR)
Assignee: LG DISPLAY CO., LTD.
H01L27/323G06F3/0412H01L51/5253
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Quick Facts
Patent No.
US 11,037,997
App. No.
16/849,497
Granted
Jun 15, 2021
Kind
B2
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.

Claims (61)

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 areas.

20. The display apparatus of claim 18 , wherein each of the plurality of light extraction patterns includes:

a first surface that is disposed to be most adjacent to corresponding one of the plurality of emission areas, and

an upper side of the first surface is closer to the corresponding one of the plurality of emission areas than a lower side of the first surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 16, 2020
From: KOO, WONHOE; SIM, DONGMIN; HAN, KYUNGHOON
To: LG DISPLAY CO., LTD.
Reel/Frame 052414/0781 →
Priority Claims (1)
KR 10-2019-0053506 · May 8, 2019 · national
Continuity (1)
Related Publication 20200357856A1 · Nov 12, 2020
Cited By (1)
US 12,713,817