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Title:
感度を上げることができるCMOSイメージセンサ
Document Type and Number:
Japanese Patent JP4252247
Kind Code:
B2
Abstract:
An image sensor, includes: a plurality of pixel circuits, each of which comprises a photoelectric conversion element, a first transistor controlled by a detection signal generated by the photoelectric conversion element, and a second transistor connected to the first transistor and controlled by a select line; and a common amplifier circuit, which is provided commonly to the plurality of pixel circuits, and which has a third transistor connected in parallel to the first transistor, and a current circuit for supplying current to the first and third transistors, wherein an amplifying circuit, which amplifies the detection signal, is formed by the first transistor in a pixel circuit selected by the select line, and by the third transistor in th common amplifier circuit.

Inventors:
Jun Funakoshi
Katsuyoshi Yamamoto
Toshitaka Mizuguchi
Application Number:
JP2002052674A
Publication Date:
April 08, 2009
Filing Date:
February 28, 2002
Export Citation:
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Assignee:
Fujitsu Microelectronics Limited
International Classes:
H01L27/146; H01J40/14; H01L27/00; H04N1/028; H04N5/335; H04N5/341; H04N5/369; H04N5/374; H04N5/3745; H04N5/378
Domestic Patent References:
JP2001069404A
JP2000307959A
JP2000324297A
JP2000298995A
Attorney, Agent or Firm:
Kenji Doi
Hayashi Tsunetoku



 
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