Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Patent
1997-05-19
1998-12-08
Ngo, Ngan V.
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
257290, 257353, 257354, H01L 31062, H01L 31113, H01L 2701, H01L 2712
Patent
active
058474226
ABSTRACT:
A MOS-based active pixel sensor cell utilizes the parasitic bipolar action of the cell to produce a horizontal current in lieu of the vertical image current associated with conventional bipolar-based active pixel sensor cells. Image data is collected during an integration period by applying a negative voltage to the gate of the MOS transistor which is sufficient to reverse-bias both the source/body and drain/body junctions. Following this, the image data is read out by raising the gate voltage such that the source/body junction remains reverse-biased, and the drain/body junction becomes forward-biased. Under these bias conditions, an amplified horizontal image current flows from the source, through the body, and out of the drain.
REFERENCES:
patent: 5065206 (1991-11-01), Nishizawa et al.
patent: 5260592 (1993-11-01), Mead et al.
patent: 5587596 (1996-12-01), Chi et al.
patent: 5591988 (1997-01-01), Arai et al.
Bergemont Albert
Chi Min-hwa
Ching Lih-Ying
Foveonics, Inc.
Ngo Ngan V.
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