Patent ID: 7487581
Filing Date: 2009-02-10
Classification: H01L,H02M,Y10T

Abstract:
1. A method of manufacturing an inverter device that includes a plurality of heat buffer plates, comprising: bonding a plurality of semiconductor chips and said heat buffer plates by a low melting point or high melting point solder; bonding said heat buffer plates and a conductor by a low melting point or high melting point solder; dividing a wide conductor into a plurality of chips fixing said conductor to a cooler; fixing said heat buffer plates with said plurality of chips; fixing said conductor and said cooler by application of pressure at locations where the plurality of semiconductor chips are not bonded to said conductor; forming said conductor as an upper arm conductor and a lower arm conductor; and bonding a first subset of said heat buffer plates onto said upper arm conductor and bonding a second subset of said heat buffer plates onto said lower arm conductor.