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US07238926B2 Shared amplifier pixel with matched coupling capacitances 有权
具有匹配耦合电容的共享放大器像素

Shared amplifier pixel with matched coupling capacitances
Abstract:
A method of making an image sensor, the method includes the steps of providing a plurality of pixels each with a photodetector; providing an amplifier that is shared between the plurality of photodetectors; providing a transfer gate associated with each photodetector; providing a charge-to-voltage conversion region that is shared between the plurality of photodetectors; determining a capacitance between each transfer gate and the charge-to-voltage conversion region; and modifying the capacitance to be substantially the same by altering a physical structure within one or more pixels.
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