SOLID-STATE IMAGING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a solid-state imaging device whose trailing characteristic in an emitter follower circuit is superior to conventional one. SOLUTION: The solid-state imaging device is provided with an emitter follower circuit 2. A transistor Tr2 constituting the emitter follower circuit 2 is a PNP type bipolar transistor. In this constitution, the PNP type transistor Tr2 acts as a current source for positively discharging charge of an output terminal 10 to the ground, when the potential of the output terminal 10 of the emitter follower circuit 2 is lowered. Consequently, the trailing characteristics in the emitter follower circuit 2 of the solid-state imaging device is superior to the conventional devices. COPYRIGHT: (C)2007,JPO&INPIT