Patent ID: 7348493
Filing Date: 2008-03-25
Classification: B32B,C04B,H01L,H05K,Y10T

Abstract:
1. A metal-ceramic circuit board comprising: a substantially planar base plate of aluminum or aluminum alloy, the base plate having a proof stress of not higher than 95 MPa and not lower than 40 MPa, and a thickness of not smaller than 1 mm; and a ceramic substrate board formed of a planar plate, wherein one surface of the ceramic substrate board is bonded directly to the base plate without any intervening material in such a manner that the aluminum or aluminum alloy is molten, contacted with the ceramic substrate board, and cooled, another surface of the ceramic substrate board has a metal conductive member, said metal conductive member forming part of an electronic circuit member, and an area of the base plate is larger than an area of the ceramic substrate board, said conductive member being made of a material selected from the group consisting of copper, a copper alloy, aluminum, and an aluminum alloy.