Driver circuit and driving method thereof
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsHaijun WANG, Xin ZHANG, Miao JIANG
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Abstract
The present invention discloses a driver circuit and a driving method thereof including a first thin film transistor, a second thin film transistor, and a third thin film transistor. Increasing a photocurrent of the second thin film transistor, i.e., amplifying the photocurrent of the thin film transistor to a photosensitive thin film transistor, advantages enhancement of a signal intensity and a signal-noise ratio of the photocurrent read out by the read line to solve the issue of weak a photocurrent signal from the photosensitive display.
Claims17
A driver circuit, comprising:
- a first thin film transistor configured to induce a photocurrent and comprising a gate electrode connected to a first scan signal line and a drain electrode connected to a first power voltage;
- a second thin film transistor configured to amplify the photocurrent and comprising a gate electrode connected to a source electrode of the first thin film transistor and a drain electrode connected to a second power voltage;
- a third thin film transistor configured to control a reading timing of the photocurrent and comprising a gate electrode connected to a second scan signal line, a drain electrode connected to a source electrode of the second thin film transistor, and a source electrode connected to a read line;
- and
- a first storage capacitor comprising a terminal connected to the gate electrode of the first thin film transistor and another terminal connected to the source electrode of the first thin film transistor and the gate electrode of the second thin film transistor.
Dependencies are inferred from the claim text.