Patent ID: 9153673
Filing Date: 2015-10-06
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate having a main surface; and an insulated gate bipolar transistor formed on said main surface, said insulated gate bipolar transistor including: a collector region of a first conductivity type formed on said main surface; a base region of a first conductivity type formed separately from said collector region on said main surface; and an emitter region of a second conductivity type formed on said main surface within said base region, said semiconductor device further comprising: an emitter conductive layer connected to both of said base region and said emitter region of said insulated gate bipolar transistor and constituting an emitter connection portion between both of said base region and said emitter region; and a collector conductive layer connected to said collector region of said insulated gate bipolar transistor and constituting a collector connection portion with said collector region, said collector conductive layer being connected to one collector active region included in said collector region by a plurality of contacts, and a number of said contacts of said collector conductive layer to said one collector active region is larger than a number of contacts of said emitter conductive layer to one base active region included in said base region, wherein a ratio of an area of said emitter connection portion between said base region and said emitter conductive layer to an area in said main surface of said base region is larger than a ratio of an area of said collector connection portion between said collector region and said collector conductive layer to an area in said main surface of said collector region.