Touch panel comprising conductive layers having opening overlapping with light-emitting element
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsKoji Kusunoki, Hiroyuki Miyake, Kazunori Watanabe
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Abstract
To increase the detection sensitivity of a touch panel, provide a thin touch panel, provide a foldable touch panel, or provide a lightweight touch panel. A display element and a capacitor forming a touch sensor are provided between a pair of substrates. Preferably, a pair of conductive layers forming the capacitor each have an opening. The opening and the display element are provided to overlap each other. A light-blocking layer is provided between a substrate on the display surface side and the pair of conductive layers forming the capacitor.
Claims12
A touch panel comprising:
- a first conductive layer;
- a second conductive layer;
- a third conductive layer;
- a fourth conductive layer;
- a fifth conductive layer;
- and
- an insulating layer,
- wherein the first conductive layer, the second conductive layer, the third conductive layer, and the fourth conductive layer are provided over a same plane,
- wherein the fourth conductive layer is electrically insulated from the first conductive layer, the second conductive layer, and the third conductive layer,
- wherein the fifth conductive layer is electrically connected to the second conductive layer and the third conductive layer,
- wherein the first conductive layer extends in a first direction and the fifth conductive layer extends in a second direction that crosses the first direction,
- wherein the first conductive layer comprises a first region which overlaps with the fifth conductive layer with the insulating layer interposed therebetween and a second region which does not overlap with the fifth conductive layer or the insulating layer,
- wherein the first region is narrower than the second region,
- wherein the first conductive layer and the fifth conductive layer form a capacitor,
- wherein the fourth conductive layer has a cross-like shape, and
- wherein a width of the cross-like shape of the fourth conductive layer is smaller than a width of the fifth conductive layer.
A display device comprising:
- a first substrate;
- a transistor over the first substrate;
- a display element electrically connected to the transistor;
- a first conductive layer;
- a second conductive layer;
- a third conductive layer;
- a fourth conductive layer;
- a fifth conductive layer;
- and
- an insulating layer,
- wherein the first conductive layer, the second conductive layer, the third conductive layer, and the fourth conductive layer are provided over a same plane,
- wherein the fourth conductive layer is electrically insulated from the first conductive layer, the second conductive layer, and the third conductive layer,
- wherein the fifth conductive layer is electrically connected to the second conductive layer and the third conductive layer,
- wherein the first conductive layer extends in a first direction and the fifth conductive layer extends in a second direction that crosses the first direction,
- wherein the first conductive layer comprises a first region which overlaps with the fifth conductive layer with the insulating layer interposed therebetween and a second region which does not overlap with the fifth conductive layer or the insulating layer,
- wherein the first region is narrower than the second region,
- wherein the first conductive layer and the fifth conductive layer form a capacitor,
- wherein the fourth conductive layer has a cross-like shape, and
- wherein a width of the cross-like shape of the fourth conductive layer is smaller than a width of the fifth conductive layer.
Dependencies are inferred from the claim text.