Title:
SOLID-STATE IMAGE PICKUP DEVICE AND ITS DRIVING METHOD
Document Type and Number:
Japanese Patent JP3385760
Kind Code:
B2
Abstract:
PURPOSE: To detect, with good efficiency, a signal charge which has been stored in a load capacitance element by a method wherein the electric charge of light according to a quantity of light incident on a photodetector is stored and the stored signal charge is demodulated by an inverting amplifier and a charge detection circuit which is provided with a first capacitor.
CONSTITUTION: An electric charge, according to the signal voltage of a pixel MOS transistor 1, which has been stored in a load capacitance element 24 is made to flow to a horizontal signal line 10. In addition, a charge detection circuit 35 which is provided with an operational amplifier 31, with a detection capacitance element 32 and with a reset switch 33 is connected to the output terminal of the horizontal signal line 10. Then, the signal charge is demodulated to a signal voltage by means of the high-speed charge detection circuit 35. Thereby, it is possible to prevent a spike-shaped pulse noise, and it is possible to increase an output signal amount remarkably. In addition, since there exists no active element other than the pixel MOS transistor 1 and the charge detection circuit 35, a solid pattern noise is hard to generate.
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Inventors:
Kazuya Yonemoto
Application Number:
JP29858494A
Publication Date:
March 10, 2003
Filing Date:
December 01, 1994
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01L27/146; H04N5/335; H04N5/343; H04N5/363; H04N5/365; H04N5/369; H04N5/374; H04N5/3745; H04N5/378; (IPC1-7): H01L27/146; H04N5/335
Domestic Patent References:
| JP6386471A | ||||
| JP5129577A | ||||
| JP4225686A |
Attorney, Agent or Firm:
Yoshisue Kakuda (2 outside)