Display device

Patent metadata

Field	Value
Publication number	US-10199440-B2
Application number	US-201715402969-A
Country	US
Kind code	B2
Filing date	Jan 10, 2017
Priority date	Jan 20, 2016
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

The display device may include a first substrate including a plurality of pixel areas; a plurality of display elements arranged in the plurality of pixel areas on the first substrate; a second substrate facing the first substrate; a plurality of spacers arranged between the plurality of pixel areas and maintaining a constant space between the first substrate and the second substrate; and a plurality of touch sensing electrodes arranged on a surface of the second substrate which faces the first substrate. Here, each touch sensing electrode may include at least one first area and at least one second area that is electrically separated from the first area. The plurality of spacers may be arranged to correspond to the first area.

First claim

What is claimed is:

1. A display device comprising:
a first substrate including a plurality of pixel areas;
a plurality of display elements disposed in the plurality of pixel areas on the first substrate;
a second substrate facing the first substrate;
a plurality of spacers disposed between the plurality of pixel areas and maintaining a constant space between the first substrate and the second substrate; and
a plurality of touch sensing electrodes between the display elements and the second substrate,
wherein each touch sensing electrode includes at least one first area and at least one second area that is electrically separated from the first area, and
wherein the plurality of spacers are disposed to correspond to the first area.

2. The display device according to claim 1 , wherein the second area has a shape which surrounds the first area in a plan view.

3. The display device according to claim 1 ,
wherein each of the plurality of display elements includes:
a first electrode disposed in the pixel area;
a pixel defining layer disposed between the plurality of pixel areas and having an opening which extends to the first electrode;
a light emitting layer disposed on the first electrode and including at least a light generation layer; and
a second electrode disposed on the light emitting layer, and

wherein the plurality of spacers are disposed on the pixel defining layer, and the second electrode extends to the pixel defining layer and the plurality of spacers.

4. The display device according to claim 3 , wherein the plurality of touch sensing electrodes include a plurality of conductive fine lines intersecting each other.

5. The display device according to claim 4 ,
wherein the plurality of conductive fine lines include:
a plurality of first lines extending in one direction; and
a plurality of second lines extending in a direction intersecting the plurality of first lines, and

wherein the plurality of display elements are disposed in areas which are formed by the plurality of first lines and the plurality of second lines that are adjacent to each other and intersect each other.

6. The display device according to claim 4 , wherein the plurality of conductive fine lines include:
a first conductive layer disposed on the second substrate;
a first cover film disposed on the first conductive layer; and
a second conductive layer disposed on the first cover film and electrically connected to the first conductive layer through a contact hole in the first cover film.

7. The display device according to claim 6 , further comprising:
a second cover film covering the second conductive layer.

8. The display device according to claim 4 , wherein the plurality of conductive fine lines are disposed only in the second area.

9. The display device according to claim 8 , further comprising:
an encapsulating layer disposed on the second electrode.

10. The display device according to claim 9 , wherein a distance between the second electrode that is disposed on an upper surface of the plurality of spacers which face the second substrate and the second substrate is 200 μm to 300 μm.

11. The display device according to claim 8 , further comprising:
a filling material disposed between the first substrate and the second substrate.

12. The display device according to claim 4 , wherein the plurality of conductive fine lines in the first area are electrically separated from the plurality of conductive fine lines in the second area.

13. The display device according to claim 12 , further comprising:
an encapsulating layer disposed on the second electrode.

14. The display device according to claim 13 , wherein a distance between the second electrode that is disposed on an upper surface of the plurality of spacers which face the second substrate and the conductive fine lines is 200 μm to 300 μm.

15. The display device according to claim 12 , further comprising:
a filling material disposed between the first substrate and the second substrate.

16. The display device according to claim 4 , wherein a part of the plurality of touch sensing electrodes configures a plurality of touch sensing electrode rows which are connected in one direction and are parallel with each other, and other touch sensing electrodes configure a plurality of touch sensing electrode columns which are connected in a direction intersecting the plurality of touch sensing electrode rows and are parallel with each other.

17. The display device according to claim 4 , wherein the plurality of touch sensing electrodes are arranged in a matrix form.

18. A display device comprising:
a first substrate including a plurality of pixel areas;
a plurality of first electrodes disposed in each of the plurality of pixel areas;
a pixel defining layer disposed between the plurality of pixel areas and having openings which extend to the plurality of first electrodes;
a light emitting layer disposed on the plurality of first electrodes and including at least one light generation layer;
a plurality of spacers disposed on the pixel defining layer;
a second electrode disposed on the light emitting layer, the pixel defining layer, and the plurality of spacers;
a second substrate facing the first substrate; and
a plurality of touch sensing electrodes between the second electrode and the second substrate,
wherein each touch sensing electrode includes at least one open portion and the plurality of spacers are disposed in an area corresponding to the open portion.

19. The display device according to claim 18 , wherein the plurality of touch sensing electrodes include a plurality of conductive fine lines intersecting each other.

20. The display device according to claim 19 ,
wherein the conductive fine lines include:
a plurality of first lines extending in one direction; and
a plurality of second lines extending in a direction intersecting the first lines, and

wherein the first electrodes are disposed in areas which are formed by the first lines and the second lines that are adjacent to each other and intersect each other.

21. The display device according to claim 19 , wherein the conductive fine lines include:
a first conductive layer disposed on the second substrate;
a first cover film disposed on the first conductive layer; and
a second conductive layer disposed on the first cover film and electrically connected to the first conductive layer through a contact hole in the first cover film.

22. The display device according to claim 21 , further comprising:
a second cover film covering the second conductive layer.

23. The display device according to claim 19 , further comprising:
an encapsulating layer disposed on the second electrode.

24. The display device according to claim 23 , wherein, in the open portion, a distance between the second electrode that is disposed on an upper surface of the plurality of spacers which face the second substrate and the conductive fine lines is 200 μm to 300 μm.

25. The display device according to claim 19 , further comprising:
a filling material disposed between the first substrate and the second substrate.

26. The display device according to claim 19 , wherein a part of the touch sensing electrodes configures a plurality of touch sensing electrode rows which are connected in one direction and are parallel with each other, and other touch sensing electrodes configure a plurality of

Assignees

• Samsung Display Co Ltd
• Samsung Display Co Ltd

Inventors

• Park Ji Ryun

Classifications

• G06F3/041

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

• G06F3/044

  by capacitive means · CPC title

• H01L27/323 Primary

  Electricity · mapped topic

• H01L51/525

  Electricity · mapped topic

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title