SOLID-STATE IMAGE PICKUP DEVICE

摘要

Disclosed is a solid-state image pickup device which is provided with: a photoelectric conversion element that generates signal charges; a plurality of pixel cells which include an amplifying transistor which amplifies the signal charges and are arranged in matrix; a plurality of perpendicular signal lines having outputs from the pixel cells on the same column commonly connected; two or more reference current source circuits which include a reference transistor supplied with a constant current from a constant current source; and a plurality of load transistors, which are connected to respective perpendicular signal lines, have each gate connected to the gate of the reference transistor of any one of the reference current source circuits, and configure a current mirror. Each load transistor and each reference transistor are connected to different points on a common grounding line, and the solid-state image pickup device has two or more areas where distance between the connecting point where each reference transistor configuring the current mirror is connected to the ground line and a connecting point where the load transistor configuring the current mirror is connected to the ground line is shorter than the distance between the adjacent connecting points of the load transistors.