Patent ID: 9621834
Date: 2017-04-11
CPC Classifications: H01L,H04N

Claim:
1. A solid-state imaging device comprising: a first photoelectric conversion element configured to convert incident light to a first signal charge, the first photoelectric conversion element has a first sensitivity to the incident light; a second photoelectric conversion element configured to convert the incident light to a second signal charge, the second photoelectric conversion element has a second sensitivity to the incident light; a first transfer transistor configured to provide electrical connection and disconnection between the first photoelectric conversion element and a floating diffusion part; a second transfer transistor configured to provide electrical connection and disconnection between the second photoelectric conversion element and the floating diffusion part; an amplification transistor configured to convert the first signal charge into a first voltage, the amplification transistor is configured to convert the second signal charge into a second voltage; and an analog-digital converter configured to use a first bit accuracy to convert the first voltage into a first digital signal, the analog-digital converter is configured to use a second bit accuracy to convert the second voltage into a second digital signal, wherein the first bit accuracy differs from the second bit accuracy.