Patent ID: 6140687
Filing Date: 2000-10-31
Classification: H01L

Abstract:
A semiconductor device comprising plural unit cells formed on a semiconductor substrate and functioning as a high frequency signal amplifier FET,wherein said unit cells include:a ring gate electrode formed on said semiconductor substrate;a drain region formed in said semiconductor substrate at an inside of said gate electrode;a drain contact formed on said drain region;a source region formed in said semiconductor substrate at an outside of said gate electrode and larger than said drain region;a source contact formed on said source region;an insulating film for separation formed on a portion of said semiconductor substrate adjacent to said source region;a gate contact;a pad on which said gate contact is formed, said pad being formed on said insulating film; anda gate withdrawn wire connecting said gate electrode and said pad,wherein said source region is provided with a pattern of regular polygon which has a cut-off portion in a plan view; said insulating film extends to said cut-off portion; and said pad extends so as to cover said insulating film.