Image sensor pixel circuit and imaging system

• Main Authors: LI YUE, MA WEIJIAN, MO YAOWU, SHAO ZEXU, XU CHEN, REN GUANJING, ZHANG ZHENGMIN
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2018
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses an image sensor pixel circuit and an imaging system. The image sensor pixel circuit comprises at least one group of photosensitive control units, and all photosensitive controlunits share a reset transistor, an amplification output unit and an overall exposure transmission unit, thereby saving the chip area and facilitating the device miniaturization. The overall exposuretransmission unit comprises a bias transistor, thereby selecting different signal saving ways when the overall exposure is finished; when the bias transistor is in an opening state under the control of a bias control signal, the current bias can be provided for the amplification output unit, thereby realizing the high-speed signal storage of the whole pixel structure; when the bias transistor is in an off state under the control of the bias control signal, an output signal of the amplification output unit can be directly stored to a signal storage unit, thereby realizing low-power consumptionstorage. 本发明公开了种图像传感器像素电路及成