Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1999-06-29
2000-09-19
Picard, Leo P.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361700, 361702, 361719, 361746, 361807, 361820, 257707, 257711, 257712, 174 163, H05K 720
Patent
active
061221708
ABSTRACT:
A ceramic base plate of aluminum nitride ceramics, for example, as a power module board has a metal layer on a surface of the ceramic base plate at a fixing portion at which the ceramic base plate is fixed onto a heat radiating plate. Further, a metal film is provided entirely on the rear surface of the ceramic base plate. An IGBT chip or the like is fixed onto the ceramic base plate with a conductive layer interposed therebetween, to form a power module board. Therefore, it is possible to avoid the generation of cracks when the ceramic base plate is mechanically fixed onto the heat radiating plate without using solder, and heat radiation from the ceramic base plate to the heat radiating plate can be improved.
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Hirose Yoshiyuki
Nakata Hirohiko
Sasaki Kazutaka
Shimazu Mitsuru
Datskovsky Michael
Fasse W. F.
Fasse W. G.
Picard Leo P.
Sumitomo Electric Industries Ltd.
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