Patent ID: 6468826
Filing Date: 2002-10-22
Classification: H01L

Abstract:
A method for fabricating a solid state image sensor, comprising the steps of forming a plurality of photoelectric conversion regions, a plurality of p+ semiconductor regions, each of said p+ semiconductor regions contacting only one side of one of said photoelectric conversion regions, and a plurality of transfer regions in a principal surface of a semiconductor substrate, forming a plurality of transfer electrodes above said transfer regions through a third insulating film, forming a first insulating film over the whole surface including said photoelectric conversion regions and said transfer electrodes, said first insulating film contacting said transfer electrodes, forming on said first insulating film an antireflection film having a refractive index smaller than that of said semiconductor substrate, and forming on said antireflection film a second insulating film having a refractive index smaller than that of said antireflection film.