Patent ID: 7242043
Filing Date: 2007-07-10
Classification: H01L

Abstract:
1. An imaging device, comprising: a photodiode and a floating diffusion region formed to be spaced from each other on a surface layer of a pixel region of a semiconductor substrate; a transfer gate having either of a concave and convex portion toward the floating diffusion region, the transfer gate being formed above the semiconductor substrate between the photodiode and the floating diffusion region by interposing a gate insulating film therebetween; a reset transistor formed in the pixel region of the semiconductor substrate and employing the floating diffusion region as a source region; and a peripheral transistor formed in a peripheral circuit region of the semiconductor substrate, wherein, in the lateral direction of the semiconductor substrate, a gate electrode of the reset transistor overlaps the floating diffusion region by a first width, and a gate electrode of the peripheral transistor overlaps either of a source region and drain region of the peripheral transistor by a second width wider than the first width.