Solid-state image pickup element

Abstract

PURPOSE: To amplify a signal charge and to improve the S/N by providing a current integration means to a signal output line. CONSTITUTION: A current integration circuit 7 integrating a signal charge flowing to a vertical output line 3 is provided and a capacitor 7-2, an operational amplifier 7-1 and a MOS transistor(TR) 7-3 to apply interrupt and connection control between an output and an input of the operational amplifier 7-1 are provided. Thus, a signal charge QS outputted from a photoelectric conversion element 1 to the vertical signal output line is amplified into QS.CT/C f (where CT is a capacitor connecting to a signal output line 3, and C f is a capacitor 7-2 of the current integration circuit 7, and the relation of CT≫C f exists). Thus, the deterioration in the S/N due to thermal noise on the horizontal output lien 3 is sufficiently reduced. COPYRIGHT: (C)1992,JPO&Japio

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Cited By (5)

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    EP-1154483-A1November 14, 2001Hamamatsu Photonics K.K.Imageur transistorise
    EP-1154483-B1December 12, 2007Hamamatsu Photonics K.K.Solid-state imaging device
    US-5731578-AMarch 24, 1998Hamamatsu Photonics K.K.Solid-state imaging apparatus
    US-6166405-ADecember 26, 2000Matsushita Electronics CorporationSolid-state imaging device
    US-6201573-B1March 13, 2001Hamamatsu Photonics K. K.Solid state imaging apparatus for imaging a two dimensional optical image having a number of integration circuits