Patent ID: 10165210

Abstract:
A photodiode is adapted to accumulate image charges in response to incident light. A transfer transistor is coupled between the photodiode and a floating diffusion to transfer the image charges accumulated in the photodiode to the floating diffusion. A reset transistor is coupled to supply a supply voltage to the floating diffusion. A source follower transistor is coupled to receive voltage of the floating diffusion from a SF gate terminal and provide an amplified signal to a source follower source terminal. A row select transistor is coupled to receive the amplified signal from the SF source terminal and output the amplified signal to a bitline. A bitline enable transistor controlled by a bitline enable voltage is coupled to link between the bitline and a bitline source node. The bitline is coupled to an idle voltage generator, a blacksun voltage generator, and a clamp voltage generator. These three voltage generators are each constructed out of a plurality of modified dummy pixels based on the dummy pixels in the dummy rows of an image sensor pixel array.