Patent ID: 6180510
Filing Date: 2001-01-30
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device with a device surface which is substantially planarized through a polishing operation, said semiconductor device comprising a semiconductor substrate portion having a substrate surface and a plurality of protruding portions protruding from said substrate surface, respectively, and arranged to keep a selected distance therebetween, said method comprising the steps of:coating said substrate surface and said plurality of protruding portions with a first anti-polishing film;depositing an insulator film on said first anti-polishing film, followed by subjecting said semiconductor device to a reflowing process for planarization of a local unevenness on a surface of said insulator film;coating said insulator film with a second anti-polishing film;applying said polishing operation to said second anti-polishing film and to said insulator film to produce said device surface that is substantially planarized; anddeleting said second anti-polishing film by applying boiling phosphoric acid.