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US 2024/0266370 A1Published application
Touch screen panel for sensing touch using tft photodetectors integrated thereon
AssigneeHoon Kim
InventorHoon KIM
Life of this patent
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Abstract
A touch screen panel using a thin film transistor (TFT) photodetector includes a touch panel including at least one unit pattern for sensing light reflected by a touch by using a TFT photodetector including an active layer formed of amorphous silicon or polycrystalline silicon on an amorphous transparent material, and a controller configured to scan the at least one unit pattern and read touch coordinates as a result of the scanning.
Claims17
A touch screen panel using a thin film transistor (TFT) photodetector, the touch screen panel comprising:
- a touch panel including a plurality of unit patterns for sensing light reflected by a touch by using a TFT photodetector;
- and
- a controller configured to read touch coordinates on the touch panel,
- wherein the TFT photodetector comprises:
- an active layer formed of amorphous silicon or polycrystalline silicon on an amorphous transparent material;
- a gate electrode;
- and
- an oxide film interposed between the active layer and the gate electrode, and
- wherein electrons by tunneling from the active layer to the oxide film migrate into the gate electrode.
6 more elements
An electronic device using a thin film transistor (TFT) photodetector, the electronic device comprising:
- a touch panel including a plurality of unit patterns for sensing light reflected by a touch by using a TFT photodetector;
- and
- a controller configured to scan the plurality of unit patterns and read touch coordinates as a result of the scanning,
- wherein the TFT photodetector includes a source, a drain and an active layer formed between the source and the drain, and
- wherein the active layer includes a current channel formed between the source and the drain.
2 more elements
Dependencies are inferred from the claim text.