Patent ID: 7964426
Filing Date: 2011-06-21
Classification: H01L

Abstract:
1. A method of manufacturing a solid-state image pickup device in which a pixel forming region composed of a pixel formed of a photoelectric-converting element and a selection transistor for reading signal electrical charges from said photoelectric-converting element and a peripheral circuit forming region are formed on the same semiconductor substrate, comprising the steps of: a process for forming a stopper layer on said semiconductor substrate; a process for forming an opening portion by selectively removing said stopper layer of the portion corresponding to an element isolation portion in the portion serving as said pixel forming region and the portion serving as said peripheral circuit forming region; a process for forming a trench ranging from said stopper layer to the inside of said semiconductor substrate in the portion serving as said peripheral circuit forming region; and a process for planarizing said trench and said opening portion by burying insulating layers into the inside of said trench and into the inside of said opening portion of said pixel forming region.