저 조도에서 동작하는 전류거울 회로를 사용한 CMOS 이미지 센서 픽셀

Since the conventional pixel has a deficit that it could not sense a thing under low light level environment, the novel architecture that CIS which includes current mirror circuit at photo-diode node is proposed. The amount of current flow by the photo-charge is amplified by utilizing the current mirror in order to improve output performance at the same light level, when comparing with the conventional ones. The proposed pixel in the paper is simulated with Hynix standard 0.18 um CMOS process. Under the light intensity of 0.01 lx, which causes photocurrent of 10 pA, the proposed architecture denotes slope of 200 mV/ms at output.