Display device

Patent metadata

Field	Value
Publication number	US-10921916-B2
Application number	US-201916274034-A
Country	US
Kind code	B2
Filing date	Feb 12, 2019
Priority date	Mar 9, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

Disclosed herein is a display device. The display device includes: a display panel including a substrate; and a touch sensing unit located on the substrate. The touch sensing unit includes: a first pattern including a plurality of first lines; a first insulating layer located on the first pattern; and a second pattern located on the first insulating layer, and including a plurality of second lines overlapping the first lines in parallel with each other on a plane. Both side first boundary lines defining a width of each of the first lines are located between both side second boundary lines defining a width of each of the second lines on a plane.

First claim

What is claimed is:

1. A display device comprising:
a display panel including a substrate; and
a touch sensing unit located on the substrate;
wherein the touch sensing unit includes:
a first pattern including a plurality of first lines;
a first insulating layer located on the first pattern; and
a second pattern located on the first insulating layer, and including a plurality of second lines overlapping the first lines in parallel with each other on a plane,

wherein the first pattern is between the substrate and the second pattern; and
wherein both side first boundary lines defining a width of each of the first lines are located inside both side second boundary lines defining a width of each of the second lines on the plane.

2. The display device of claim 1 , wherein the touch sensing unit further includes a second insulating layer located on the first insulating layer and the second pattern.

3. The display device of claim 1 , wherein each of the first boundary lines and a corresponding one of the second boundary lines, which are adjacent to each other, are parallel to each other.

4. The display device of claim 1 , wherein an interval between each of the first boundary lines and a corresponding one of the second boundary lines, which are adjacent to each other, is equal to or larger than 0.2 μm.

5. The display device of claim 1 , wherein an interval between each of the first boundary lines and a corresponding one of the second boundary lines, which are adjacent to each other, is equal to or larger than 0.35 μm.

6. The display device of claim 1 , wherein the first pattern and the second pattern have an identical shape.

7. The display device of claim 1 , wherein the width of the second lines is larger than the width of the first lines by 0.4 μm or more.

8. The display device of claim 1 , wherein the width of the second lines is larger than the width of the first lines by 0.7 μm or more.

9. The display device of claim 1 , wherein:
the display device includes a plurality of pixels on the substrate; and
each of the first lines and the second lines extends along a boundary between the pixels.

10. The display device of claim 9 , wherein each of the first lines and the second lines has a mesh shape which surrounds at least one of the pixels.

11. The display device of claim 1 , wherein the first pattern and the second pattern are metal.

12. The display device of claim 1 , wherein a top surface of the first insulating layer is flat.

13. The display device of claim 12 , wherein the first insulating layer includes an organic layer.

14. The display device of claim 13 , wherein the second insulating layer includes an organic layer.

15. The display device of claim 13 , further comprising an inorganic layer on the organic layer.

16. The display device of claim 1 , wherein:
the display device further includes an encapsulation layer located on the substrate; and
the touch sensing unit is located on the encapsulation layer.

17. The display device of claim 16 , wherein:
the display device further includes a buffer layer on the encapsulation layer; and
the touch sensing unit is located on the buffer layer.

18. The display device of claim 1 , wherein:
the first pattern includes:
a plurality of first sub-patterns extending in a first direction, and spaced apart from each other in a second direction intersecting the first direction; and
a plurality of second sub-patterns separated from the plurality of first sub-patterns; and
the second pattern includes:
a plurality of third sub-patterns extending in the second direction, and spaced apart from each other in the first direction; and
a plurality of fourth sub-patterns separated from the plurality of third sub-patterns.

19. The display device of claim 18 , wherein the second sub-patterns overlap the third sub-patterns, and the first sub-patterns overlap the fourth sub-patterns.

20. The display device of claim 19 , wherein the second sub-patterns and the third sub-patterns are coupled to each other and the first sub-patterns and the fourth sub-patterns are coupled to each via contact holes defined in the first insulating layer.

21. A display device comprising:
a display panel including a plurality of pixels; and
a touch sensing unit located on the display panel;
wherein the touch sensing unit includes:
a first pattern including a mesh defining a plurality of first openings;
a first insulating layer located on the first pattern; and
a second pattern located on the first insulating layer, and including a mesh defining a plurality of second openings which overlap the plurality of first openings,

wherein the first pattern is between the display panel and the second pattern; and
wherein the first openings have an area larger than an area of the second openings.

22. The display device of claim 21 , wherein the first openings are located inside the second openings on a plane.

23. The display device of claim 22 , wherein the mesh of the second pattern overlaps the first openings on the plane, and the mesh of the first pattern does not overlap the second openings on the plane.

24. The display device of claim 21 , wherein a boundary line of each of the first openings is parallel to a boundary line of a correspond one of the second openings.

25. The display device of claim 21 , wherein a boundary line of each of the first openings does not intersect a boundary line of a correspond one of the second openings on a plane.

26. The display device of claim 21 , wherein an interval between a boundary line of each of the first openings and a boundary line of a correspond one of the second openings is 0.2 μm or more on a plane.

27. The display device of claim 21 , wherein an interval between a boundary line of each of the first openings and a boundary line of a correspond one of the second openings is 0.35 μm or more on a plane.

28. The display device of claim 21 , wherein the area of the first openings and the area of the second openings are larger than an area of the pixels.

29. A display device comprising:
a display panel including a substrate; and
a touch sensing unit located on the substrate;
wherein the touch sensing unit includes:
a plurality of first detection units extending in a first direction, and arranged in a second direction intersecting the first direction; and
a plurality of second detection units extending in the second direction, and arranged in the first direction;

wherein each of the plurality of first detection units and the plurality of second detection units includes:
a first pattern including a plurality of first lines;
a first insulating layer located on the first pattern; and
a second pattern located on the first insulating layer, and including a plurality of second lines overlapping the first lines in parallel with each other on a plane,

wherein the first pattern is between the substrate and the second pattern; and
wherein both side first boundary lines defining a width of each of the first lines are located inside both side second boundary lines defining a width of each of the second lines on the plane.

30. The display device of claim 29 , wherein:
each of the first detection units includes:
a plurality of first sensing electrodes arranged in the first direction; and
a plurality of first connection electrodes connecti

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Kyungseop
• Kim Kwanho
• Kee Inseo
• Park Sungkyun
• Son Hoseok
• Shim Jinbo
• Han Sangyoun
• Hong Jungmoo

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · 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