Title:
IMAGE SENSOR
Document Type and Number:
WIPO Patent Application WO2004062272
Kind Code:
A3
Abstract:
An image sensor has a plurality of pixels, each pixel having a photodiode (12), a voltage amplifier (16) having gain greater than 1 and a sampling capacitor (18) charged by the voltage amplifier. In this arrangement, each pixel provides gain through voltage amplification. This enables the sampling capacitor (18) to be kept to a low size, so that the pixel circuitry occupies the smallest possible space, thereby enabling large aperture pixels to be formed.
Inventors:
CHILDS MARK J (GB)
Application Number:
PCT/IB2003/006161
Publication Date:
September 02, 2004
Filing Date:
December 19, 2003
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
CHILDS MARK J (GB)
CHILDS MARK J (GB)
International Classes:
H04N3/15; H04N5/32; (IPC1-7): H04N3/15
Domestic Patent References:
| WO2001057554A2 | 2001-08-09 |
Foreign References:
| US6417504B1 | 2002-07-09 | |||
| EP1271930A2 | 2003-01-02 |
Other References:
ABDALLA M A ET AL: "An integrating CMOS APS for X-ray imaging with an in-pixel preamplifier", NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A: ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, NORTH-HOLLAND PUBLISHING COMPANY. AMSTERDAM, NL, vol. 466, no. 1, 21 June 2001 (2001-06-21), pages 232 - 236, XP004251301, ISSN: 0168-9002
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 03 5 May 2003 (2003-05-05)
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 03 5 May 2003 (2003-05-05)
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