Patent ID: 9633970
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. An IGBT device, comprising: a whole-wafer IGBT chip, wherein a top surface of the whole-wafer IGBT chip comprises a central gate connection zone and a plurality of emitter connection zones surrounding the central gate connection zone, and a bottom surface of the whole-wafer IGBT chip comprises a collecting zone, wherein an emitter connection zone located on a surface of a failure cellular zone of the chip is thinned; a collector gasket fixed on the bottom surface of the chip and an emitter gasket fixed on the top surface of the chip, wherein a radius of the collector gasket is less than a radius of the chip, the collector gasket covers the collecting zone, a radius of the emitter gasket is less than the radius of the chip, and the emitter gasket covers the emitter connection zones but does not cover a terminal zone of the chip; a collector electrode in electrical contact with the collector gasket and an emitter electrode in electrical contact with the emitter gasket; and a gate leading wire connected to the central gate connection zone, wherein the gate leading wire is insulated from the emitter gasket and the emitter electrode.