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    • 8. 发明授权
    • Method for driving a photoelectric conversion device with isolation switches arranged between signal lines and amplifiers
    • 用于驱动设置在信号线和放大器之间的隔离开关的光电转换装置的方法
    • US08520108B2
    • 2013-08-27
    • US13085575
    • 2011-04-13
    • Masanori OguraToru KoizumiMasaru Fujimura
    • Masanori OguraToru KoizumiMasaru Fujimura
    • H04N3/14H04N5/335
    • H04N5/378H04N5/3575H04N5/374
    • A photoelectric conversion device prevents a pseudo signal caused by the parasitic capacitance of a transfer switch from being input to an amplifier. A photoelectric conversion device (50) includes a pixel (10) which outputs a signal to a signal line (107), an amplifier which amplifies the signal supplied via the signal line (107), and an isolation switch (121) inserted between a signal line (108) and the input node of the amplifier. The pixel (10) includes a photodiode, a floating diffusion (FD), a transfer switch which transfers the charge of the photodiode to the FD, and an amplification transistor which outputs a signal to a signal line (109) in accordance with the potential of the FD. The isolation switch (121) is turned off at least in a period when a transfer pulse for controlling the transfer switch of the pixel (10) transits.
    • 光电转换装置防止由转印开关的寄生电容引起的伪信号被输入到放大器。 光电转换装置(50)包括向信号线(107)输出信号的像素(10),放大经由信号线(107)供给的信号的放大器和插入在信号线(107)之间的隔离开关 信号线(108)和放大器的输入节点。 像素(10)包括光电二极管,浮动扩散(FD),将光电二极管的电荷传送到FD的转移开关,以及根据电位将信号输出到信号线(109)的放大晶体管 的FD。 至少在用于控制像素(10)的转印开关的转印脉冲转移的期间,隔离开关(121)截止。