Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11871623-B2
Application number	US-202017024609-A
Country	US
Kind code	B2
Filing date	Sep 17, 2020
Priority date	Dec 3, 2019
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A display device includes a display panel including a plurality of light emitting areas; and an input sensor disposed on the display panel and having a first conductive layer and a first insulating layer disposed on the first conductive layer. The first insulating layer includes a plurality of optical patterns that extend in a direction away from the first conductive layer.

First claim

What is claimed is:

1. A display device comprising:
a display panel having a plurality of light emitting areas; and
an input sensor disposed directly on the display panel and including a first conductive layer and a first insulating layer disposed on the first conductive layer,
wherein the first insulating layer comprises a plurality of optical patterns comprising a plurality of lens patterns that extend in a direction away from the first conductive layer, the plurality of lens patterns comprising a plurality of first grooves and a plurality of second grooves defined in the first insulating layer,
wherein the plurality of first grooves extend in a first direction and are spaced apart from each other in a second direction intersecting the first direction, and
wherein the plurality of second grooves extend in the second direction and are spaced apart from each other in the first direction.

2. The display device of claim 1 , wherein each of the plurality of optical patterns overlaps n light emitting areas of the plurality of light emitting areas, where n is a positive number of 1 or greater.

3. The display device of claim 1 , wherein each of the plurality of light emitting areas overlaps m optical patterns of the plurality of optical patterns, where m is a positive number of 1 or greater.

4. The display device of claim 1 , wherein, when viewed in plan, the plurality of first grooves and the plurality of second grooves intersect each other.

5. The display device of claim 1 , wherein, when viewed in plan, the plurality of first grooves and the plurality of second grooves are spaced apart from and do not overlap each other.

6. The display device of claim 1 , wherein each groove of the plurality of first grooves and the plurality of second grooves comprises a bottom surface and a side surface extending from the bottom surface in the direction away from the first conductive layer to define the plurality of lens patterns.

7. The display device of claim 1 , wherein each groove of the plurality of first grooves and the plurality of second grooves comprises a bottom line and a side surface extending from the bottom line in the direction away from the first conductive layer to define the plurality of lens patterns.

8. The display device of claim 1 , wherein each groove of the plurality of first grooves and the plurality of second grooves has a depth less than a maximum thickness of the first insulating layer.

9. The display device of claim 1 , wherein each of the plurality of optical patterns has a height greater than or equal to a maximum thickness of the first insulating layer.

10. The display device of claim 1 , wherein:
the first conductive layer comprises a sensing pattern having a plurality of openings, and
when viewed in plan, each of the plurality of openings overlaps at least one optical pattern of the plurality of optical patterns.

11. The display device of claim 1 , wherein the input sensor further comprises a second conductive layer disposed on the first insulating layer and a second insulating layer disposed on the second conductive layer,
wherein the second insulating layer has a refractive index greater than a refractive index of the first insulating layer.

12. The display device of claim 1 , wherein the first insulating layer comprises an organic layer.

13. The display device of claim 1 , wherein the input sensor further comprises a second conductive layer disposed on the first conductive layer, and
the plurality of optical patterns cover substantially an entire surface of the second conductive layer.

14. The display device of claim 1 , wherein the first conductive layer is disposed on a base surface, the plurality of optical patterns are spaced apart from each other, and a portion of the base surface is exposed in an area between the plurality of optical patterns.

15. The display device of claim 1 , wherein the first insulating layer further comprises a lower insulating layer disposed below the plurality of optical patterns.

16. The display device of claim 15 , wherein the plurality of optical patterns are spaced apart from each other, and a portion of the lower insulating layer is exposed in an area between the plurality of optical patterns.

17. The display device of claim 15 , wherein the plurality of optical patterns are adjacent to each other.

18. The display device of claim 1 , wherein the display panel comprises a base layer, a circuit element layer disposed on the base layer, a display element layer disposed on the circuit element layer, and an encapsulation layer disposed on the display element layer,
wherein the input sensor further comprises a base insulating layer in direct contact with the encapsulation layer, and
wherein the first conductive layer is disposed on the base insulating layer.

19. A display device comprising:
a display panel; and
an input sensor disposed directly on the display panel,
wherein the input sensor comprises:
a first conductive layer disposed on the display panel and defining a plurality of openings;
an organic layer disposed on the first conductive layer, the organic layer comprising a contact hole exposing a portion of the first conductive layer and a plurality of optical patterns having curved upper surfaces;
a second conductive layer disposed on the organic layer and electrically connected to the first conductive layer through the contact hole; and
a cover layer to cover the second conductive layer, the cover layer being disposed on the organic layer and having a refractive index greater than a refractive index of the organic layer.

20. The display device of claim 19 , wherein, when viewed in plan, each of the plurality of openings of the first conductive layer overlaps at least one optical pattern of the plurality of optical patterns.

21. The display device of claim 19 , wherein a groove is formed in the organic layer between the plurality of optical patterns, and the groove has a depth less than or equal to a maximum thickness of the organic layer.

22. The display device of claim 19 , wherein the first conductive layer is disposed on a base surface, and a portion of the cover layer is in contact with the base surface.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jungi
• Byun Jin-Su
• Lee Jaehun
• JEON Bogeon
• Jung Yang-Ho

Classifications

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• H10K59/879 Primary

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

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K50/858

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