Patent ID: 9066031
Filing Date: 2015-06-23
Classification: H04N

Abstract:
1. A solid-state imaging device comprising: a plurality of pixel cells arranged in rows and columns, each of the pixel cells including a photoelectric conversion element that generates a signal charge according to an amount of light received and an amplifying transistor that generates a signal voltage by amplifying the signal charge; a plurality of vertical signal lines each of which is provided for a corresponding one of the columns and to each of which are output the signal voltages generated by pixel cells included in the plurality of pixel cells that are disposed in a corresponding one of the columns; and a plurality of column circuits each of which is provided for a corresponding one or more of the columns and into each of which are input the signal voltages output to one or more of the vertical signal lines disposed in the corresponding one or more of the columns, wherein each of the plurality of column circuits includes an amplifier into which input signals based on the signal voltages are input and that includes a constant current source transistor, the solid-state imaging device further comprises a reference current source circuit that supplies a first bias voltage to gates of a plurality of the constant current source transistors included in the plurality of column circuits, and each of the plurality of column circuits further includes a sample-and-hold circuit that holds the first bias voltage.