Driving method for image sensor

Abstract

Abstract PURPOSE:To improve the service life and the reliability of the titled sensor and by detecting a line start pulse and a clock pulse to apply ON/OFF control to the gate voltage of TFT drive, sensor bias and a light source or the like. CONSTITUTION:Photosensors S1-Sn.m, storage capacitors Cs1-Csn.m storing light current of the sensors S1-Sn.m, thin film transistors (TFT) T1-Tn.m transferring the charge stored in the storage capacitors to load capacitors CL1-CL.n, and reset TFT R1-Rn.m resetting the transfer remaining charge of the storage capacitors, are used. Then the read start pulse and the clock signal are detected to turn on the sensor bias, gate drive voltage and light source or the like in this state. Thus, undesired voltage application and light radiation is prevented thereby extending the service life of the image sensor and improving the reliability.

Inventors

• 👤 Katsunori Hatanaka
• 👤 Toshihiro Saiga
• 👤 Takayuki Ishii
• 👤 Katsuhiko Yamada

Bibliographic Details