Semiconductor device having directionally balanced gates and manufacturing method

摘要

A semiconductor device such as an IGBT having trench gates in a form of stripes, and manufacturing method, wherein concentration of stresses in only a single direction is relieved and the generation of a leakage current and crystal defects in the IGBT is prevented. In one embodiment, the inside of a terminal area of an IGBT is divided into a single gate pad area and plural element areas by a wiring area. The respective element areas are arranged in such a manner that the directions of trench gates formed in the respective element areas cross at right angles with respect to the directions of trench gates of respective adjacent element areas.