Patent ID: 6122170
Filing Date: 2000-09-19
Classification: C04B,H01L

Abstract:
A power module board comprising a ceramic base plate, a current control unit arranged on a first portion of said ceramic base plate, and a fixing portion for fixing said ceramic base plate onto another plate, situated at a second portion of said ceramic base plate, wherein:said current control unit includes a stacked structure comprising a first intervening layer stacked on said first portion of said ceramic base plate and a conductive layer stacked on said first intervening layer with said first intervening layer being interposed between said conductive layer and said first portion of said ceramic base plate, and a semiconductor device mounted on an uppermost surface of said stacked structure oriented away from said ceramic base plate;said current control unit is sealed;said fixing portion includes a fixing seat area comprising a second intervening layer arranged on said second portion of said ceramic base plate and a metal layer arranged on said second intervening layer with said second intervening layer being interposed between said metal layer and said second portion of said ceramic base plate.