Solid state image pickup device and camera

Details Solid state image pickup device and camera Solid state image pickup device and camera

2006-03-08

2008-08-05

Louie, Wai-Sing (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Charge transfer device

C257S292000, C257S431000, C257S466000, C257SE27062, C257SE27108, C257S462000

Reexamination Certificate

active

07408210

ABSTRACT:
An object of the present invention is to simultaneously realize the enlargement of a dynamic range and the downsizing of a pixel. An additional capacitor CS is composed by using: a first capacitor formed of a first diffusion layer, a second diffusion layer and a P well by layering the P well, the first diffusion layer, a first dielectric film, a first polysilicon layer, a second dielectric film and a second polysilicon layer; a second capacitor formed of the second diffusion layer, the first polysilicon layer and the first dielectric film; and a third capacitor formed of the first polysilicon layers, a second polysilicon layer, and a second dielectric film. Thereby, the additional capacitor CS for accumulating carriers overflown from a photodiode PD can secure a required capacitance value while making its size as small as possible.

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