Patent ID: 7452742
Filing Date: 2008-11-18
Classification: H01L

Abstract:
1. A method of producing a solid-state imaging device comprising the steps of: forming a structure including (a) a substrate having a gettering layer thereon and having a first impurity with a first concentration, (b) a first conductive type epitaxial layer and (c) a first conductive type impurity layer stacked on one another in that order, said first conductive type epitaxial layer being formed on the substrate including the gettering layer, and said first conductive type impurity layer being formed in a boundary region including a boundary of said substrate and said epitaxial layer, a part of said substrate facing the boundary and a part of said first conductive type epitaxial layer facing the boundary having a second impurity with a second concentration higher than that of the first impurity concentration; forming in said epitaxial layer a second conductive type region capable of storing in said epitaxial layer a charge generated by a photoelectric conversion; forming an interconnection layer on said epitaxial layer; and removing said substrate.