Patent ID: 6674101
Filing Date: 2004-01-06
Classification: H01L

Abstract:
A GaN-based semiconductor device comprising:a base layer made of a GaN-based semiconductor material and having first and second surfaces; a bank made of a GaN-based first undoped semiconductor material and formed on the first surface of said base layer, said bank having a side wall surface and an upper surface; a thin layer made of a GaN-based second undoped semiconductor material having higher band-gap energy than the first undoped semiconductor material and formed on the side wall surface of said bank, said thin layer having a heterojunction with the first undoped semiconductor material; a gate electrode formed in contact with said thin layer; a source electrode formed on the upper surface of said bank so as to extend beyond the heterojunction between said bank and said thin layer; and a drain electrode formed on the second surface of said base layer.