Patent ID: 8881386
Filing Date: 2014-11-11
Classification: H01L,H05K,Y10T

Abstract:
1. A power module production method for producing a power module by stacking a cooler, an insulating resin sheet, a heat sink block, and a semiconductor chip, the power module production method comprising: a first thermal compression bonding step in which a first insulating resin sheet, which forms a lower layer of the insulating resin sheet, is bonded to the cooler by thermal compression; a second the thermal compression bonding step in which a second insulating resin sheet, which forms an upper layer of the insulating resin sheet, is interposed between the first insulating resin sheet and the heat sink block, the second insulating resin sheet is bonded to the first insulating resin sheet by thermal compression, and the heat sink block is bonded to the second insulating resin sheet by thermal compression; and a soldering step in which the semiconductor chip is soldered onto the heat sink block, wherein: the first insulating resin sheet and the second insulating resin sheet each comprise a thermosetting resin material, in the first thermal compression bonding step, heating is performed to a temperature at which the first insulating resin sheet thermally cures, and in the second thermal compression bonding step, heating is performed to a temperature at which the second insulating resin sheet thermally cures.