Patent ID: 7642149
Filing Date: 2010-01-05
Classification: H01L

Abstract:
1. A method for producing a semiconductor device which includes: a semiconductor base, a hetero semiconductor region made of a semiconductor material different in band gap from a semiconductor material for the semiconductor base, and so configured as to form a hetero junction in combination with the semiconductor base, a gate insulating film so configured as to contact with the hetero junction between the semiconductor base and the hetero semiconductor region, a gate electrode so configured as to contact with the gate insulating film, a source electrode connected to the hetero semiconductor region, and a drain electrode connected to the semiconductor base, the method comprising: forming the gate electrode and a source contact hole for the source electrode in a self-aligning manner, by using a mask material; and forming an insulating region between the gate electrode and the source contact hole, wherein the insulating region is formed from a sideface layer of the gate.