Patent ID: 6143585
Filing Date: 2000-11-07
Classification: H01L

Abstract:
A method of producing a solid state sensing device, said solid state image sensing device comprising a cell area located at a semiconductor substrate and a peripheral circuit area formed around the cell area located at the semiconductor substrate, said cell area including photoelectric conversion portions and charge transfer portions, said method comprising the steps of:forming said peripheral circuit area, said step of forming the peripheral circuit area including the steps of forming a first device isolation region and forming an insulating film on said first device isolation region;forming said cell area, said step of forming the cell area including the steps of forming a second device isolation region for making isolation between said photoelectric conversion portions themselves, between said photoelectric conversion portions and said charge transfer portions, and between said charge transfer portions themselves and forming an insulating film on said second device isolation region;wherein said insulating film of said peripheral circuit area is formed to have a thickness greater than the thickness of said insulating film of said cell area and is formed using a CVD process.