Patent ID: 7817200

Claim:
A solid-state image-capturing device having built in an image-capturing area including a light receiving element provided on a semiconductor substrate, a substrate bias circuit, and a clamp circuit for receiving output of said substrate bias circuit, and applying the output of said substrate bias circuit to said semiconductor substrate in accordance with a substrate pulse, said solid-state image-capturing device comprising: a substrate bias control circuit for controlling so as to reduce an electric current of said clamp circuit during a predetermined period, wherein said substrate bias control circuit effects control so as to reduce the difference between the intermediate output of the input voltage terminal of said clamp circuit and the output of substrate voltage during said predetermined period wherein said substrate bias control circuit comprises an electric-current reducing portion including a pre-driver for increasing voltage, and an external clamp circuit between the intermediate output of the input voltage terminal of said clamp circuit and the output of substrate voltage during said predetermined period.