Display panel with touch detector, touch panel, and electronic unit

Patent metadata

Field	Value
Publication number	US-9626022-B2
Application number	US-201514694492-A
Country	US
Kind code	B2
Filing date	Apr 23, 2015
Priority date	Apr 22, 2011
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

There are provided a display panel with a touch detector that allows the touch detection electrodes to be less visible, a touch panel, and an electronic unit having the display panel with a touch detector. The display panel with a touch detector includes: a display layer including a plurality of display elements arranged side by side; and an electrode layer alternately segmented into first regions and second regions along a first direction, the electrode layer including a plurality of first slits arranged side by side to extend in a second direction, and a plurality of second slits each allowing an adjacent pair of the plurality of first slits in the second regions to be in communication with one another.

First claim

What is claimed is:

1. A display panel with a touch detector, comprising:
a display layer including a plurality of display elements arranged side by side;
an electrode layer alternately segmented into touch detection electrode regions and dummy electrode regions along a first direction;
a touch detection electrode, which has only a single opening having a closed outline and which extends in a second direction crossing the first direction, is disposed in each of the touch detection electrode regions, a plurality of the touch detection electrodes being arranged in the first direction in the electrode layer;
a plurality of dummy electrodes disposed in the single opening of the respective touch detection electrode, wherein the dummy electrodes in the opening of the touch detection electrode are arranged in the first direction and the second direction;
a plurality of first slits each disposed between the dummy electrodes adjacent in the first direction in the dummy electrode regions; and
a plurality of second slits each disposed between the dummy electrodes adjacent in the second direction in the dummy electrode regions.

2. The display panel with a touch detector according to claim 1 , wherein
the display panel has a display region and a frame region around the display region in a plan view,
the touch detection electrode extends over the frame region and the display region in the second direction.

3. The display panel with a touch detector according to claim 1 , wherein
no dummy electrode is arranged between the adjacent two touch detection electrode regions.

4. The display panel according to claim 1 , further comprising a wiring layer having a plurality of signal lines extending in the first direction between the adjacent display elements arranged in the second direction, wherein
one of the second slits is provided in a region corresponding to anyone of the signal lines.

5. The display panel according to claim 4 , wherein the one of the second slits is provided every predetermined number of the signal lines.

6. The display panel according to claim 4 , wherein the electrode layer further including a plurality of third slits, and each of the third slits intersects with only one of the first slits in the touch detection electrode regions.

7. The display panel according to claim 6 , wherein one of the second slits and one of the third slits are provided in a region corresponding to anyone of the signal lines.

8. The display panel according to claim 7 , wherein the third slits adjacent to each other in the first direction are provided at different positions in the second direction.

9. The display panel according to claim 8 , wherein the second slits adjacent to each other in the first direction are provided at different positions in the second direction.

10. The display panel according to claim 8 , wherein the second slits adjacent to each other in the first direction are provided at the same positions in the second direction.

11. The display panel according to claim 8 , wherein
the second slits and the third slits extend in the first direction, and
a width of each of the second slits is equal to a width of each of the third slits.

12. The display panel according to claim 7 , wherein
the third slits adjacent to each other in the first direction are provided at the same positions in the second direction, and
the second slits adjacent to each other in the first direction are provided at the same positions in the second direction.

13. The display panel according to claim 12 , wherein the second slits and the third slits extend in a third direction different from the first direction.

14. The display panel according to claim 12 , wherein
the second slits and the third slits extend in the first direction, and
a width of each of the third slits is larger than a width of each of the second slits.

15. The display panel according to claim 1 , wherein one of the first slits is provided for every predetermined number of the display elements in the first direction.

16. The display panel according to claim 15 , wherein
each of the display elements defines a display pixel including a red display element, a green display element, and a blue display element, and
the first slits are provided at positions corresponding to the blue display elements.

17. The display panel according to claim 1 , wherein
the dummy electrodes are electrically floated.

18. A touch panel comprising:
an electrode layer alternately segmented into touch detection electrode regions and dummy electrode regions along a first direction;
a touch detection electrode, which has only a single opening having a closed outline and which extends in a second direction crossing the first direction, is disposed in each of the touch detection electrode regions, a plurality of the touch detection electrodes being arranged in the first direction in the electrode layer;
a plurality of dummy electrodes disposed in the single opening of the respective touch detection electrode, wherein the dummy electrodes in the opening of the touch detection electrode are arranged in the first direction and the second direction;
a plurality of first slits each disposed between the dummy electrodes adjacent in the first direction in the dummy electrode regions; and
a plurality of second slits each disposed between the dummy electrodes adjacent in the second direction in the dummy electrode regions.

19. An electronic unit including a display panel with a touch detector, and a control section that performs operation control using the display panel with a touch detector, the display panel comprising:
a display layer including a plurality of display elements arranged side by side;
an electrode layer alternately segmented into touch detection electrode regions and dummy electrode regions along a first direction;
a touch detection electrode, which has only a single opening having a closed outline and which extends in a second direction crossing the first direction, is disposed in each of the touch detection electrode regions, a plurality of the touch detection electrodes being arranged in the first direction in the electrode layer;
a plurality of dummy electrodes disposed in the single opening of the respective touch detection electrode, wherein the dummy electrodes in the opening of the touch detection electrode are arranged in the first direction and the second direction;
a plurality of first slits each disposed between the dummy electrodes adjacent in the first direction in the dummy electrode regions; and
a plurality of second slits each disposed between the dummy electrodes adjacent in the second direction in the dummy electrode regions.

20. The display panel with a touch detector according to claim 1 , wherein the dummy electrodes are disposed in each of the dummy electrode regions in which the touch detection electrode is not disposed and in the single opening of the respective touch detection electrode.

Assignees

• Japan Display Inc

Inventors

• Ishizaki Koji
• Noguchi Koji
• Ikeda Masanobu
• Matsui Yasuyuki

Classifications

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G02F1/13338

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

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/133707

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title