Patent ID: 6180966
Filing Date: 2001-01-30
Classification: H01L

Abstract:
A semiconductor device, comprising: a main cell which has trench gates for the flow of a main current, and a current sensing cell which has trench gates for the flow of a current to detect said main current, said main cell and said current sensing cell being formed at the same semiconductor substrate,wherein the orientation of the crystal face at the side walls of the trenches composing channels of said trench gates in said main cell is the same or almost the same as that at the side walls of the trenches composing channels of said trench gates in said current sensing cell,wherein said trench gates in said main cell and said trench gates in said current sensing cell reach a drift layer in said semiconductor substrate, andwherein each trench gate in said main cell and each trench gate in said current sensing cell have end portions, respectively with respect to a plan view of the device, and are separated from each other.