Patent ID: 8530947

Claim:
A solid-state image sensor having a plurality of picture elements on a semiconductor substrate, each of the picture elements including: a photodiode for receiving light and generating photocharges; a floating diffusion region for collecting and holding electric charges generated by the photodiode; and a transfer transistor having a transfer gate between the photodiode and the floating diffusion region so as to transfer electric charges from the photodiode to the floating diffusion region, wherein the floating diffusion region is located at an edge of a light-receiving surface of the photodiode; and in the light-receiving surface of the photodiode, when viewed in a planar view, an entire region inside a first arc drawn around the floating diffusion region and outside the transfer gate, and a region inside each of a plurality of extending portions radially extending outwards, in contrast to the floating diffusion region, from the first arc, with their distal ends being in contact with a second arc drawn concentric with the first arc, are formed as regions whose conductivity type is same as a signal charge to be collected.