Patent ID: 6768171
Filing Date: 2004-07-27
Classification: H01L

Abstract:
A high-voltage field-effect transistor (HVFET) comprising:a first buried layer of a second conductivity type disposed in a first epitaxial layer of a first conductivity type; a second buried layer of the second conductivity type disposed in a second epitaxial layer of the first conductivity type, the one or more first and second buried layers being spaced vertically apart in a substantially parallel configuration such that a JFET conduction channel of the first conductivity type is formed between the first and second buried layers; a drain region of the first conductivity type disposed in the second epitaxial layer; a body region of the second conductivity type disposed in the second epitaxial layer; a source region of the first conductivity type disposed in the body region; and an insulated gate member disposed adjacent to the body region; and wherein the first epitaxial layer is formed on a substrate of the second conductivity type.