Patent ID: 6399961
Filing Date: 2002-06-04
Classification: H01L

Abstract:
A field-effect transistor, comprising:a semiconductor substrate material having a dopant with a doping concentration and a doping profile; a monocrystalline semiconductor body mesa region, being composed of substrate material and extending above adjacent portions of the semiconductor substrate material and having at least one dopant having the same concentration and doping profile as the substrate material; a monocrystalline semiconductor channel region being a part of the body mesa region; semiconductor source/drain regions, said semiconductor channel region being substantially lateral and having a flat upper surface, the semiconductor source/drain regions adjoining first and second portions of the channel region, respectively, the semiconductor source and drain regions each having a polycrystalline semiconductor region; a gate oxide positioned on top of the monocrystalline semiconductor channel region, the gate oxide being substantially flat and having uniform thickness; and an electrical isolation region of substantially uniform thickness being partially overlapped by the first and second portions of the channel region, respectively, the electrical isolation region positioned adjacent the semiconductor source and drain region.