Patent ID: 9443960
Filing Date: 2016-09-13
CPC Classification: H01L

Claim Text:
1. A method of fabricating a semiconductor device, comprising the steps of: forming an epitaxial growth layer made of silicon carbide on a silicon carbide substrate of a first conductivity type, said epitaxial growth layer including a drift layer of the first conductivity type, and a body region having a high concentration region of a second conductivity type and a low concentration region of the second conductivity type; forming a source region of the first conductivity type on said low concentration region to be in contact with said low concentration region; forming a trench in said epitaxial growth layer to penetrate said low concentration region, said high concentration region, and said source region and reach said drift layer after forming said low concentration region, said high concentration region, and said source region; and forming a gate electrode on a surface of said trench, with a gate insulation film interposed therebetween.