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    • 79. 发明申请
    • Display Device
    • 显示设备
    • US20120268439A1
    • 2012-10-25
    • US13497365
    • 2010-06-08
    • Kaoru YamamotoYasuhiro Sugita
    • Kaoru YamamotoYasuhiro Sugita
    • G09G5/00
    • G06F3/0412G06F3/0421
    • A plurality of sensor pixel circuits are disclosed, each including one photodiode, one accumulation node accumulating charge corresponding to an amount of light, a read transistor having a control terminal connected to the accumulation node, and transistors turning on or off in accordance with a clock signal, and switching a path for a current flowing through the photodiode are arranged in a pixel region. In accordance with the clock signal, when a backlight is turned on, a current flows out of the accumulation node, and a potential at the accumulation node drops. When the backlight is turned off, a current flows into the accumulation node, and the potential at the accumulation node rises.
    • 公开了多个传感器像素电路,每个传感器像素电路包括一个光电二极管,一个累积节点累积对应于光量的电荷,具有连接到累积节点的控制端的读取晶体管和根据时钟的晶体管导通或截止 信号和切换流过光电二极管的电流的路径被布置在像素区域中。 根据时钟信号,当背光被打开时,电流从累积节点流出,并且累积节点的电位下降。 当背光关闭时,电流流入累积节点,并且累积节点上的电位上升。