Display device
Provided is a high image quality display device including a touch panel. A display device includes a substrate; a display region provided on the substrate, the display region including an array of a plurality of pixels each including at least one light-emitting element; a scanning line driving circuit; a video signal driving circuit; a common electrode commonly provided for the plurality of light-emitting elements, the common electrode being divided into a plurality of divided areas extending in a radial direction in the display region; and a voltage switch circuit connected with the plurality of divided areas of the common electrode, the voltage switch circuit selectively connecting each of the plurality of divided areas of the common electrode with a reference power supply circuit supplying a constant potential or a scanning circuit detecting a touch position in the display region.
1. A display device, comprising:
a substrate;
a display region provided on the substrate, the display region including an array of a plurality of pixels each including at least one light-emitting element;
a scanning line driving circuit sequentially scanning the plurality of pixels;
a video signal driving circuit sequentially inputting a video signal to the scanned plurality of pixels;
a common electrode commonly provided for the plurality of light-emitting elements, the common electrode being divided into a plurality of divided areas extending in a radial direction in the display region; and
a voltage switch circuit connected with the plurality of divided areas of the common electrode, the voltage switch circuit selectively connecting each of the plurality of divided areas of the common electrode with a reference power supply circuit supplying a constant potential or a scanning circuit detecting a touch position in the display region, wherein
the substrate is flexible,
the display region has a flat region and a folded region, wherein the folded region is provided along a side of the display region,
the plurality of the divided areas includes a plurality of first divided areas and a plurality of second divided areas,
a first shape of the plurality of first divided areas is different from a second shape of the plurality of second divided areas, and
the plurality of first divided areas is arranged in the flat region and the plurality of second divided areas is arranged in the folded region.
2. The display device according to claim 1 , wherein at least one of the plurality of divided areas of the common electrode is triangular or quadrangular.
3. The display device according to claim 1 , wherein the plurality of divided areas of the common electrode extending in the radial direction extend from a substantially central position of the display region.
4. The display device according to claim 3 , wherein the plurality of divided areas of the common electrode respectively act as scanning electrodes of a touch panel;
the display device further comprising detection electrodes provided in the display region, the detection electrodes respectively crossing the scanning electrodes.
5. The display device according to claim 4 , wherein the detection electrodes are located in a spiral pattern.
6. The display device according to claim 4 , wherein the detection electrodes are located in a substantially concentric pattern.
7. The display device according to claim 1 , wherein the plurality of divided areas of the common electrode provide a touch panel by themselves.
8. The display device according to claim 1 , further comprising a plurality of subsidiary electrodes respectively provided for the plurality of divided areas of the common electrode.
9. The display device according to claim 1 , wherein any one of the plurality of first divided areas and the plurality of second divided areas is not provided at a boundary between the flat region and the folded region.
10. The display device according to claim 1 , wherein the light-emitting elements are organic light-emitting diodes.
11. The display device according to claim 1 , wherein the light-emitting elements are quantum dot light-emitting diodes.
12. The display device according to claim 1 , wherein the plurality of divided areas of the common electrode act as scanning electrodes of a touch panel,
the display device further comprising detection electrodes provided above the scanning electrodes.
13. A display device, comprising:
a substrate;
a display region provided on the substrate, the display region including an array of a plurality of pixels each including at least one light-emitting element;
a peripheral circuit enclosing the display region;
a common electrode commonly provided for the plurality of light-emitting elements, the common electrode being divided into a plurality of divided areas extending in a radial direction in the display region; and
a plurality of detection electrodes located on the plurality of divided areas of the common electrode with an insulating layer being provided between the plurality of detection electrodes and the plurality of divided areas of the common electrode;
wherein the peripheral circuit includes:
a touch detection circuit connected with the plurality of detection electrodes; and
a voltage switch circuit connected with the plurality of divided areas of the common electrode, the voltage switch circuit selectively connecting each of the plurality of divided areas of the common electrode with a reference power supply circuit supplying a constant potential or a scanning circuit detecting a touch position in the display region,
the substrate is flexible,
the display region has a flat region and a folded region, wherein the folded region is provided along a side of the display region,
the plurality of the divided areas includes a plurality of first divided areas and a plurality of second divided areas,
a first shape of the plurality of first divided areas is different from a second shape of the plurality of second divided areas, and
the plurality of first divided areas is arranged in the flat region and the plurality of second divided areas is arranged in the folded region.
14. The display device according to claim 13 , wherein the plurality of divided areas of the common electrode respectively act as scanning electrodes of a touch panel.
15. The display device according to claim 14 , wherein the detection electrodes are located in a spiral pattern.
16. The display device according to claim 14 , wherein the detection electrodes are located in a substantially concentric pattern.
17. The display device according to claim 13 , further comprising a plurality of subsidiary electrodes respectively provided for the plurality of divided areas of the common electrode.
18. The display device according to claim 13 , wherein,
there is not any of the plurality of first divided areas and the plurality of second divided areas in a boundary between the first region and the folded region.
19. The display device according to claim 13 , wherein the light-emitting elements are organic light-emitting diodes.