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Image sensor having self-boosting function, self-boosting method, and image sensor forming method
Image sensor having self-boosting function, self-boosting method, and image sensor forming method
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机译:具有自升功能的图像传感器,自升方法和图像传感器形成方法
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摘要
Disclosed is a image sensor (e.g., a CMOS image sensor) including pixels each having a transfer transistor and a drive transistor, in which the gate of at least one of the transistors has a boosting gate disposed over it comprised of a conductive film pattern with interposing an insulation film. Thus, a voltage applied to the boosting gate is capacitively coupled to at least one of the transfer gate of the transfer transistor and a drive gate of the drive transistor. The transfer gate is supplied with the sum of the transfer voltage and the boosting gate-coupling voltage as a result and there is no need for providing a high voltage generator for the image sensor. The dynamic range of operation may be enhanced if such a coupling voltage is applied to the drive gate of the drive transistor.
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