Patent ID: 7736937

Claim:
A manufacturing method of a solid-state imaging device, wherein the solid-state imaging device comprises: a semiconductor substrate; photodiodes each comprising a surface-side first conductivity type region formed adjacent to a surface of the semiconductor substrate and a second conductivity type region provided directly under the surface-side first conductivity type region; a second conductivity type vertical transfer region provided in the vicinity of the surface-side first conductivity type region; at least one first conductivity type inter-pixel isolation region provided under the vertical transfer region; and at least one first conductivity type overflow barrier region provided below said at least one first conductivity type inter-pixel isolation region, wherein said at least one first conductivity type inter-pixel isolation region comprises a plurality of first conductivity type regions that are located at different positions in a depth direction of the semiconductor substrate, the method comprising: a first step of forming said at least one first conductivity type overflow barrier region in a semiconductor substrate; and a second step of ion-implanting first conductivity type impurity ions from a first direction in which channeling occurs, to form at least one of said at least one first conductivity type inter-pixel isolation region.