Display device

Patent metadata

Field	Value
Publication number	US-11730040-B2
Application number	US-202117385368-A
Country	US
Kind code	B2
Filing date	Jul 26, 2021
Priority date	Oct 22, 2020
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A display device includes a stretchable substrate that includes a plurality of unit regions. Each of the plurality of unit regions includes a plurality of island regions and at least one bridge region that connects adjacent island regions to each other. A display panel is on the stretchable substrate. The display panel includes a plurality of display parts and at least one wiring part. The plurality of display parts correspondingly overlap the plurality of island regions. The at least one wiring part correspondingly overlaps the at least one bridge region. An input sensor is on the display panel. The input sensor includes a plurality of sensing electrodes and at least one subsidiary electrode. The plurality of sensing electrodes correspondingly overlaps the plurality of unit regions. When viewed in a plan view the at least one subsidiary electrode is correspondingly disposed between adjacent sensing electrodes.

First claim

What is claimed is:

1. A display device, comprising:
a stretchable substrate that includes a plurality of unit regions, wherein each of the plurality of unit regions includes a plurality of island regions and at least one bridge region that connects adjacent island regions of the plurality of island regions to each other;
a display panel on the stretchable substrate, wherein the display panel includes a plurality of display parts and at least one wiring part, the plurality of display parts correspondingly overlapping the plurality of island regions, and the at least one wiring part correspondingly overlaps the at least one bridge region; and
an input sensor on the display panel, wherein the input sensor includes a plurality of sensing electrodes and at least one subsidiary electrode, the plurality of sensing electrodes correspondingly overlapping the plurality of unit regions, and when viewed in a plan view the at least one subsidiary electrode is correspondingly disposed between adjacent sensing electrodes of the plurality of sensing electrodes.

2. The display device of claim 1 , wherein the plurality of island regions include a first island region and a second island region that are correspondingly defined on each of the plurality of unit regions, the first island region and the second island region are disposed adjacently to each other.

3. The display device of claim 2 , wherein the plurality of unit regions includes a first unit region and a second unit region that is disposed adjacent to the first unit region,
wherein the at least one wiring part is disposed between the first unit region and the second unit region.

4. The display device of claim 3 , wherein the at least one subsidiary electrode correspondingly overlaps the at least one wiring part.

5. The display device of claim 1 , wherein the plurality of display parts correspondingly include a plurality of pixels.

6. The display device of claim 1 , wherein:
the display panel further includes an encapsulation layer that covers the plurality of display parts,
wherein the input sensor is disposed directly on the thin encapsulation layer.

7. The display device of claim 1 , wherein the plurality of sensing electrodes and the at least one subsidiary electrode have a mesh shape.

8. The display device of claim 1 , wherein the input sensor further includes a first sensing line and a second sensing line, the first sensing line is connected to a corresponding one of the plurality of sensing electrodes, and the second sensing line is connected to a corresponding one of the at least one subsidiary electrode.

9. The display device of claim 1 , wherein the plurality of sensing electrodes include a first sensing electrode and a second sensing electrode that are adjacent to each other,
wherein the at least one subsidiary electrode is disposed between the first sensing electrode and the second sensing electrode.

10. The display device of claim 9 , wherein:
the stretchable substrate has a first mode in an unstretched state and a second mode in a stretched state,
wherein the plurality of unit regions are spaced apart from each other at a first distance in the first mode and are spaced apart from each other at a second distance in the second mode, the second distance is greater than the first distance.

11. The display device of claim 10 , wherein the first sensing electrode and the second sensing electrode are spaced apart from each other at substantially the first distance in the first mode and are spaced apart from each other at substantially the second distance in the second mode.

12. The display device of claim 11 , wherein:
the at least one subsidiary electrode has a first area in the first mode and is deactivated for detecting an external input; and
the at least one subsidiary electrode has a second area in the second mode and is activated to detect the external input.

13. The display device of claim 12 , wherein:
the first area is proportional to the first distance; and
the second area is proportional to the second distance.

14. The display device of claim 12 , further comprising an input detection circuit that calculates a plurality of coordinate data that corresponds to the plurality of sensing electrodes when an external input is detected through the plurality of sensing electrodes.

15. The display device of claim 14 , wherein:
the first sensing electrode has a first coordinate data;
the second sensing electrode has a second coordinate data; and
the input detection circuit calculates the first coordinate data and the second coordinate data that respectively correspond to the first sensing electrode and the second sensing electrode when the external input is detected through the first sensing electrode and the second sensing electrode.

16. The display device of claim 15 , wherein a first subsidiary electrode of the at least one subsidiary electrode is disposed between the first and second sensing electrodes, the first subsidiary electrode has a third coordinate data.

17. The display device of claim 16 , wherein:
the input detection circuit calculates the first coordinate data and the second coordinate data in the first mode; and
the input detection circuit calculates the first coordinate data, the second coordinate data and the third coordinate data in the second mode.

18. The display device of claim 16 , wherein
the first subsidiary electrode is activated to have a third coordinate data in the second mode; and
the input detection circuit remaps at least one of the first coordinate data and the second coordinate data, and calculates the third coordinate data, and the at least one remapped first coordinate data and second coordinate data in the second mode.

19. The display device of claim 18 , wherein the stretchable substrate further includes a strain gauge that determines if the stretchable substrate is in the first mode or the second mode.

20. The display device of claim 19 , wherein the input detection circuit activates the first subsidiary electrode based on information about the first mode or the second mode received from the strain gauge.

21. A display device, comprising:
a stretchable substrate having a first mode in an unstretched state and a second mode in a stretched state, the stretchable substrate including a plurality of unit regions, each of the plurality of unit regions including a plurality of island regions and at least one bridge region that connects adjacent island regions of the plurality of island regions to each other;
a display panel on the stretchable substrate, the display panel including a plurality of pixels that correspondingly overlaps the plurality of island regions;
an input sensor on the display panel, the input sensor including a plurality of sensing electrodes and at least one subsidiary electrode, the plurality of sensing electrodes correspondingly overlapping the plurality of unit regions, and when viewed in a plan view the at least one subsidiary electrode is correspondingly disposed between adjacent sensing electrodes of the plurality of sensing electrodes; and
an input detection circuit that calculates a plurality of coordinate data that correspond to the plurality of sensing electrodes, wherein in the first mode, the input detection circuit maps first coordinate data that corresponds to first sensing electrodes of the plurality of sensing electrodes and the input detection circuit further maps second coordinate data that corresponds to second sensing electrodes of the plurality of s

Assignees

• Samsung Display Co Ltd

Inventors

• Bok Seung-Lyong
• Kim Kicheol
• Won Byeong-Hee

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H10K59/352

  the areas of the RGB subpixels being different · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title