Patent ID: 8400544

Claim:
A solid-state imaging device that has a plurality of pixels that are arranged in rows and columns and convert optical signals into electric signals to output the electric signals as voltage signals, said solid-state imaging device comprising: column signal lines each provided for a corresponding one of the columns of the pixels, said column signal lines transmitting, in a direction of the columns, the voltage signals output from the pixels; current sources each provided for and connected to a corresponding one of said column signal lines; column amplification circuits each provided for a corresponding one of said column signal lines, said column amplification circuits amplifying the voltage signals transmitted through said column signal lines; a first ground line supplying said current sources with ground potential; and a second ground line supplying said column amplification circuits with ground potential, said first and second ground lines being interconnected, via lines extending along the direction of the columns, at positions each corresponding to a corresponding one of the columns of the pixels, wherein the ground potential is supplied to the current sources and the column amplification circuits via the lines extending the direction of the columns.