Light sensing circuit

The invention relates to a light sensing circuit, which comprises a bootstrap circuit and a light sensing component, and a circuit gain of the bootstrap circuit enables an equivalent capacitance value generated by a parasitic capacitor of the light sensing component to be reduced, so that noise of the light sensing circuit is reduced, and the bandwidth of the light sensing circuit is increased. 本发明是有关一种光感测电路，其包含一自举式电路以及一光感测组件，该自举式电路的一电路增益使该光感测组件的一寄生电容所产生一等效电容值降低，以减少光感测电路的噪声以及增加光感测电路的带宽。