Patent ID: 9490286
Filing Date: 2016-11-08
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a photoelectric conversion device comprising: forming a layer that covers a photoreceiving portion and a gate electrode of a first transistor by etching a film from which a side wall on a gate electrode of a second transistor is formed; forming a first insulation film that covers the layer; forming a first wiring on the first insulation film; forming a second insulation film that covers the first insulation film and the first wiring; forming a second wiring on the second insulation film; forming an opening above the photoreceiving portion by etching a portion of the first and second insulation films, after forming the second wiring; and filling the opening with a material so that the layer is positioned between the material and the photoreceiving portion, wherein the opening is formed so that (1) a distance between the material and the photoreceiving portion is smaller than a thickness of the gate electrode of said first transistor, (2) a portion of the layer is removed after forming the second wiring and before filing the opening, and (3) a portion of the layer remains between a bottom of the opening and the photoreceiving portion.