Patent ID: 7880225

Claim:
A semiconductor device including a trench gate type MISFET having a p-type channel and a resistive element provided between a gate pad and a gate electrode of the trench gate type MISFET, comprising: (a) a semiconductor substrate; (b) a p-type semiconductor region formed over the semiconductor substrate; (c) an n-type channel forming area formed over the p-type semiconductor region; (d) a p-type source region formed over the n-type channel forming area; (e) a trench which extends from an upper surface of the p-type source region to the p-type semiconductor region; (f) a gate insulating film formed over an inner wall of the trench; (g) a gate electrode formed over the gate insulating film and formed so as to bury the trench; (h) a first n-type semiconductor region formed within the n-type channel forming area and having an impurity introduced therein in a concentration higher than the n-type channel forming area; and (i) a second n-type semiconductor region formed in a region deeper than the first n-type semiconductor region and shallower than the bottom of the trench, the second n-type semiconductor region having an impurity introduced therein in a concentration lower than the first n-type semiconductor region and an impurity introduced therein in a concentration higher than the n-type channel forming area.