Patent ID: 7855406

Claim:
A solid-state imaging device comprising: a semiconductor substrate which includes p-type impurities; a p-type epitaxial layer which is formed on the semiconductor substrate and includes p-type impurities whose concentration is lower than that of the semiconductor substrate; an n-type epitaxial layer which includes n-type impurities formed on the p-type epitaxial layer; a plurality of photoelectric conversion parts which are included n-type regions provided at the surface region of the n-type epitaxial layer; a plurality of element isolating regions which are formed in the n-type epitaxial layer to enclose each of said plurality of photoelectric conversion parts in a plane and each of which includes a first p-type semiconductor layer that is formed to reach the p-type epitaxial layer from the surface region of the n-type epitaxial layer and isolates said plurality of photoelectric conversion parts from one another; and a chip cutting part dividing an element-formed semiconductor substrate into chips and that includes an element isolation insulating film formed at the surface region of the n-type epitaxial layer and a second p-type semiconductor layer formed to reach the p-type epitaxial layer from the surface region of the n-type epitaxial layer along the region where the element isolation insulating film is formed.