CMOS pixels for ALC and CDS and methods of forming the same

Details CMOS pixels for ALC and CDS and methods of forming the same CMOS pixels for ALC and CDS and methods of forming the same

2006-09-12

2006-09-12

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C257S292000, C348S308000

Reexamination Certificate

active

07105793

ABSTRACT:
Embodiments of the invention provide pixel cells that allow both automatic light control and correlated double sampling operations. The pixel cell includes first and second photo-conversion devices that can be separately read out. For example, the second photo-conversion device can be the pixel cells' floating diffusion region, with an area and doping profile suitable for photo-conversion. An image sensor may include an array of pixel cells, some or all of which have two photo-conversion devices, and peripheral circuitry for reading out signals from the pixel cells. The image sensor's readout circuitry may monitor charge generated by the second photo-conversion devices to determine when to read out signals from the first photo-conversion devices.

REFERENCES:
patent: 4819074 (1989-04-01), Suzuki
patent: 5955753 (1999-09-01), Takahashi
patent: 6140630 (2000-10-01), Rhodes
patent: 6204524 (2001-03-01), Rhodes
patent: 6310366 (2001-10-01), Rhodes et al.
patent: 6326652 (2001-12-01), Rhodes
patent: 6333205 (2001-12-01), Rhodes
patent: 6376868 (2002-04-01), Rhodes
patent: 6759641 (2004-07-01), Loose
patent: 6947088 (2005-09-01), Kochi
patent: 58-119279 (1983-07-01), None
patent: 11-266403 (1999-09-01), None
patent: WO 00/78034 (2000-12-01), None
patent: WO 200078034 (2000-12-01), None
International Search Report dated Nov. 23, 2004.

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