Active pixel sensor cell with balanced blue response and reduced

Details Active pixel sensor cell with balanced blue response and reduced Active pixel sensor cell with balanced blue response and reduced

1997-03-26

1999-04-06

Ngo, Ngan V.

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

Field effect device

Having insulated electrode

257290, 257291, H01L 31062, H01L 31113

Patent

active

058922539

ABSTRACT:
In an active pixel sensor cell, the blue response of the cell is balanced by utilizing a photodiode in lieu of a photogate, and the noise is reduced by quickly reading the voltage on a node, transferring the collected charge from the photodiode onto the node, and then again reading the voltage on the node.

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Mendis, S. et al., "Progress in CMOS Active Pixel Image Sensors," SPIE vol. 2172, (1994) Center for Space Microelectronics Tech., Jet Propulsion Laboratory, California Institute of Technology, pp. 19-29, paper presented at a Conference on Feb. 7-8, 1994 in San Jose, CA.
Dickinson, A. et al., "TP 13.5: A 256.times.256 CMOS Active Pixel Image Sensor with Motion Detection," pp. 226-227, 1995 IEEE International Solid-State Circuits Conf., Pasadena, CA., Feb. 16, 1995.
Nixon, R. et al., "256.times.256 CMOS Active Pixel Sensor Camera-on-a-Chip," ISSCC96/Session/Electronic Imaging Circuits/Paper FA11.1/1996 IEEE International Solid-State Circuits Conference, pp. 178-179.
IEEE/1995/ISSCC Slide Supplement, p. 181.
Sedra, A. et al. "Junction Field-Effect Transistors (JFETs)," Chapter 7, Microelectronic Circuits, pp. 251-257, (1982).

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