Patent ID: 7973368

Claim:
A semiconductor device comprising: a substrate; source and drain electrodes formed on the substrate; a T-gate electrode constructed with a supporting part contacting the substrate and a head part having a predetermined cross section which is integrated into the supporting part, the T-gate electrode formed on the substrate; a first protective layer made of an insulating material which is formed on each of first and second sides of the supporting part of the T-gate electrode; and a second protective layer made of an insulating material which is formed on sides of the source and drain electrodes and sides of the first protective layer; wherein the sides of the first protective layer include a first side, and a second side opposite the first side and facing the supporting part, and wherein the second protective layer has a first portion on the side of the source electrode, a second portion on the side of the drain electrode and respective third portions on the first and second sides of the first protective layer.