Patent ID: 9583532
Date: 2017-02-28
CPC Classifications: H01L

Claim:
1. A method of manufacturing a solid-state image sensing device including a plurality of photoelectric conversion portions constituting a plurality of pixels, an insulating gate field effect transistor portion, and a plurality of first films formed on said plurality of photoelectric conversion portions respectively and each implementing an antireflection coating, comprising the steps of: forming a stack film constituted of a plurality of insulating films so as to cover said plurality of photoelectric conversion portions and a gate electrode layer of said insulating gate field effect transistor portion; selectively anisotropically etching said stack film such that said stack film remains on each of said plurality of photoelectric conversion portions to form a lower film and such that said stack film remains on a sidewall of said gate electrode layer to form a sidewall insulating film; forming a source/drain region of said insulating gate field effect transistor portion by introducing an impurity into a region not covered with said gate electrode layer and said sidewall insulating film; forming an upper film at least on said lower film after introduction of said impurity; and etching at least any of said upper film and said lower film which are included in said first film, wherein said lower film is etched such that a part of thickness of said lower film remains; and said first films are formed such that said first films on at least two photoelectric conversion portions of said plurality of photoelectric conversion portions are different in thickness from each other.