Input/output device and electronic device
First Claim
1. An input/output device comprising:
- a first pixel electrode;
a second pixel electrode;
a first common electrode;
a second common electrode;
a liquid crystal;
a first insulating film;
a second insulating film; and
a transistor,wherein the first common electrode serves as one electrode of a sensor element,wherein the second common electrode serves as the other electrode of the sensor element,wherein the transistor comprises a first gate, a semiconductor layer over the first gate, and a second gate over the semiconductor layer,wherein the semiconductor layer comprises a channel formation region that comprises an oxide semiconductor,wherein the second gate comprises an oxide conductor,wherein the oxide conductor comprises one or more kinds of metal elements comprised in the oxide semiconductor,wherein the first insulating film is positioned over the second gate,wherein the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode are positioned over the first insulating film,wherein the first pixel electrode overlaps with the first common electrode with the second insulating film positioned between the first pixel electrode and the first common electrode,wherein the second pixel electrode overlaps with the second common electrode with the second insulating film positioned between the second pixel electrode and the second common electrode,wherein the liquid crystal is positioned over the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode,wherein the first pixel electrode and the second pixel electrode are apart from each other and are positioned on a same plane,wherein the first common electrode and the second common electrode are apart from each other and are positioned on a same plane,wherein the first common electrode is located under the first pixel electrode, andwherein the second common electrode is located under the second pixel electrode.
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Accused Products
Abstract
An input/output device is provided. The input/output device includes a first pixel electrode, a second pixel electrode, a first common electrode, a second common electrode, a liquid crystal, a first insulating film, a second insulating film, and a transistor. The first common electrode can serve as one electrode of a sensor element. The second common electrode can serve as the other electrode of the sensor element. The transistor includes a first gate, a second gate, and a semiconductor layer. The pixel electrode, the common electrodes, and the second gate are positioned on different planes. The second gate contains one or more kinds of metal elements included in the semiconductor layer. The second gate, the pixel electrode, and the common electrodes preferably contain one or more kinds of metal elements included in the semiconductor layer.
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Citations
19 Claims
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1. An input/output device comprising:
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a first pixel electrode; a second pixel electrode; a first common electrode; a second common electrode; a liquid crystal; a first insulating film; a second insulating film; and a transistor, wherein the first common electrode serves as one electrode of a sensor element, wherein the second common electrode serves as the other electrode of the sensor element, wherein the transistor comprises a first gate, a semiconductor layer over the first gate, and a second gate over the semiconductor layer, wherein the semiconductor layer comprises a channel formation region that comprises an oxide semiconductor, wherein the second gate comprises an oxide conductor, wherein the oxide conductor comprises one or more kinds of metal elements comprised in the oxide semiconductor, wherein the first insulating film is positioned over the second gate, wherein the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode are positioned over the first insulating film, wherein the first pixel electrode overlaps with the first common electrode with the second insulating film positioned between the first pixel electrode and the first common electrode, wherein the second pixel electrode overlaps with the second common electrode with the second insulating film positioned between the second pixel electrode and the second common electrode, wherein the liquid crystal is positioned over the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode, wherein the first pixel electrode and the second pixel electrode are apart from each other and are positioned on a same plane, wherein the first common electrode and the second common electrode are apart from each other and are positioned on a same plane, wherein the first common electrode is located under the first pixel electrode, and wherein the second common electrode is located under the second pixel electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device comprising:
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a first transistor; a second transistor; a first insulating film over the first transistor and the second transistor; a first pixel electrode over the first insulating film; a second pixel electrode over the first insulating film; a first common electrode over the first insulating film; a second common electrode over the first insulating film; a second insulating film between the first pixel electrode and the first common electrode and between the second pixel electrode and the second common electrode; a liquid crystal over the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode; and an auxiliary wiring in contact with the first common electrode, wherein the auxiliary wiring has a lower resistivity than the first common electrode, wherein the first common electrode is located under the first pixel electrode, wherein the second common electrode is located under the second pixel electrode, wherein the first common electrode serves as one electrode of a sensor element, and wherein the second common electrode serves as the other electrode of the sensor element. - View Dependent Claims (14, 15, 16)
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17. A device comprising:
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a first transistor; a second transistor; a first insulating film over the first transistor and the second transistor; a second insulating film over the first insulating film, the second insulating film being configured to reduce surface unevenness due to the first transistor and the second transistor; a first pixel electrode over the second insulating film, the first pixel electrode being electrically connected to one of a source electrode and a drain electrode of the first transistor; a second pixel electrode over the second insulating film, the second pixel electrode being electrically connected to one of a source electrode and a drain electrode of the second transistor; a first common electrode over the second insulating film; a second common electrode over the second insulating film; a third insulating film between the first pixel electrode and the first common electrode and between the second pixel electrode and the second common electrode; and a liquid crystal over the first pixel electrode, the second pixel electrode, the first common electrode, and the second common electrode, wherein the first common electrode serves as one electrode of a sensor element, wherein the second common electrode serves as the other electrode of the sensor element, and wherein the first insulating film and the second insulating film are located between the other of the source electrode and the drain electrode of the first transistor and the first common electrode and are located between the other of the source electrode and the drain electrode of the second transistor and the second common electrode. - View Dependent Claims (18, 19)
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Specification