Patent ID: 9713253
Date: 2017-07-18
CPC Classifications: B22D,H01L,H05K,Y10T

Claim:
1. A metal/ceramic bonding substrate comprising: a ceramic substrate; a metal plate bonded directly to one side of the ceramic substrate; a metal base plate bonded directly to the other side of the ceramic substrate; and a reinforcing plate member arranged so as to extend from one of both end faces in the directions of one of longitudinal and lateral directions of the metal base plate to the other end face thereof without interrupting that the metal base plate extends between a bonded surface of the metal base plate to the ceramic substrate and the opposite surface thereof, the reinforcing plate member extending in parallel to the bonded surface, both end faces in longitudinal directions of the reinforcing plate member being exposed to the outside, the whole surface of the reinforcing plate member except for the both end faces thereof being bonded directly to the metal base plate.