Solid-state imaging device

Details Solid-state imaging device Solid-state imaging device

2006-06-13

2006-06-13

Lee, Eddie (Department: 2811)

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

Field effect device

Having insulated electrode

C257S290000, C257S291000, C257S293000, C257S462000

Reexamination Certificate

active

07061033

ABSTRACT:
The invention provides a solid-state imaging device that include a pixel array where a plurality of unit pixels each including a photo diode and an insulated gate field effect transistor for detecting a photocharge are arranged, and a control circuit that controls the operation of the pixel array. The control circuit can apply a predetermined voltage to a source diffused region of the insulated gate field effect transistor and applies voltage by which a channel region becomes a conductive state to a gate electrode to bias a junction region formed of a semiconductor substrate of a first conductivity type and a semiconductor layer of a second conductivity type in a forward direction so as to accumulate a predetermined amount of the charge of a predetermined conductivity type in an accumulation region, and thereby causing the charge of a predetermined conductivity type accumulated in the accumulation region to be discharged. Accordingly, image quality deterioration caused by a residual image due to photocharge accumulated can be reduced.

REFERENCES:
patent: 4808834 (1989-02-01), Kimata
patent: 5892253 (1999-04-01), Merrill
patent: 6051857 (2000-04-01), Miida
patent: A 11-195778 (1999-07-01), None

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