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发明公开
CN108377349A 混合键合的图像传感器的反馈电容器和读取方法 有权

混合键合的图像传感器的反馈电容器和读取方法
摘要：
混合键合的图像传感器具有光电二极管裸片，光电二极管裸片具有多个宏单元；每个宏单元具有至少一个光电二极管和耦接区域。耦接区域耦接至其馈入放大器的输入和反馈电容器的支撑电路裸片的宏单元单位的耦接区域。反馈电容器还耦接至放大器的输出，且放大器在输入和输出之间进行反相。方法包括：复位光电二极管裸片的光电二极管；将来自光电二极管的信号通过键合点耦接至支撑电路以耦接至反馈电容器和放大器的输入，反馈电容器还耦接至放大器的反相输出；以及使用放大器放大信号，其中反馈电容器的电容确定放大器的增益。
摘要（英）：

A hybrid-bonded image sensor has a photodiode die with multiple macro-cells; each macro-cell has at least one photodiode and a coupling region. The coupling regions couple to a coupling region of a macro-cell unit of a supporting circuitry die where they feed an input of an amplifier and a feedback capacitor. The feedback capacitor also couples to output of the amplifier, and the amplifier invertsbetween the input and the output. The method includes resetting a photodiode of the photodiode die; coupling signal from photodiode through the bond point to the supporting circuitry die to a feedback capacitor and to an input of the amplifier, the feedback capacitor also coupled to an inverting output of the amplifier; and amplifying the signal with the amplifier, where a capacitance of the feedback capacitor determines a gain of the amplifier.

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