Display device with conductive film configured as touch sensor and common electrode located below the pixel electrode
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHajime Kimura, Shunpei Yamazaki
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Abstract
A novel input device that is highly convenient or reliable is provided. A novel input/output device that is highly convenient or reliable is provided. A semiconductor device is provided. The present inventors have reached an idea of a structure including a plurality of conductive films configured to be capacitively coupled to an approaching object, a driver circuit that selects a conductive film from a plurality of conductive films in a predetermined order, and a sensor circuit having a function of supplying a search signal and a sensing signal.
Claims8
A display device comprising:
- a first conductive film over a substrate;
- a transistor comprising a source electrode and a drain electrode, over the first conductive film;
- a first insulating film including resin, over and in contact with the source electrode and the drain electrode;
- a second conductive film over the first insulating film;
- a second insulating film over the second conductive film;
- a pixel electrode of a display element, over the second insulating film;
- and
- an alignment film over the pixel electrode,
- wherein the pixel electrode overlaps the second conductive film,
- wherein the pixel electrode is electrically connected to one of the source electrode and the drain electrode through an opening of the first insulating film and the second insulating film,
- wherein the one of the source electrode and the drain electrode overlaps the first conductive film,
- wherein the second conductive film is configured to be one electrode of a touch sensor and to be a common electrode of the display element, and
- wherein the opening overlaps the first conductive film.
A display device comprising:
- a first conductive film over a substrate;
- a transistor comprising a source electrode and a drain electrode, over the first conductive film;
- a first insulating film including resin, over and in contact with the source electrode and the drain electrode;
- a second conductive film having a light-transmitting property, over the first insulating film;
- a second insulating film over the second conductive film;
- a pixel electrode of a display element, over the second insulating film;
- and
- an alignment film over the pixel electrode,
- wherein the pixel electrode overlaps the second conductive film,
- wherein the pixel electrode is electrically connected to one of the source electrode and the drain electrode through an opening of the first insulating film and the second insulating film,
- wherein the one of the source electrode and the drain electrode overlaps the first conductive film,
- wherein the second conductive film is configured to be one electrode of a touch sensor and to be a common electrode of the display element, and
- wherein the opening overlaps the first conductive film.
Dependencies are inferred from the claim text.