Patent ID: 7709869
Filing Date: 2010-05-04
Classification: H01L

Abstract:
1. A photoelectric conversion device comprising: a photoelectric conversion unit having a carrier accumulation region; a floating diffusion region which converts electric carriers into a voltage; a control electrode which consists part of a transfer transistor and is arranged between the photoelectric conversion unit and the floating diffusion region to transfer the electric carriers accumulated in the carrier accumulation region to the floating diffusion region; and an output unit which outputs a signal corresponding to a voltage of the floating diffusion region, wherein the photoelectric conversion unit includes a first boundary side which extends along a channel width direction of the transfer transistor and faces the floating diffusion region, and a second boundary side which extends along a channel length direction of the transfer transistor from one end of the first boundary side to the direction away from the floating diffusion region, the control electrode of the transfer transistor includes a first portion which extends along the channel width direction and overlaps the first boundary side when seen through from a direction perpendicular to a light receiving surface of the photoelectric conversion unit, and a second portion which extends along the channel length direction from one end of the first portion and overlaps the second boundary side when seen through from the direction perpendicular to the light receiving surface, and the control electrode of the transfer transistor has an L shape when viewed from the direction perpendicular to the light receiving surface.