Patent ID: 7646048
Filing Date: 2010-01-12
Classification: H01L,H04N

Abstract:
1. A complementary metal oxide silicon (CMOS) image sensor comprising: a photo-transistor for performing a photo-sensing and amplification function; a reset transistor connected to the photo-transistor, the reset transistor performing a reset function; a drive transistor for acting as a source follower buffer amplifier in response to an output signal from the photo-transistor; a switching transistor connected to the drive transistor, the switching transistor performing an addressing function; and a load transistor connected to the photo-transistor for controlling the amplification function of the photo-transistor; wherein the load transistor has one terminal connected in common to one terminal of the photo-transistor, one terminal of the reset transistor and a gate of the drive transistor, and the other terminal connected to a supply voltage terminal.