Patent ID: 7340828
Filing Date: 2008-03-11
Classification: H01L,H05K,Y10T

Abstract:
1. A method for producing a metal/ceramic bonding circuit board, said method comprising the steps of: preparing a mold having a recessed portion; arranging a ceramic substrate in the mold so that the ceramic substrate is adjacent to the recessed portion; injecting a molten metal into the recessed portion of the mold so as to contact one side of the ceramic substrate arranged in the mold; cooling and solidifying the injected molten metal to bond a metal plate to one side of the ceramic substrate; and etching the metal plate, which is bonded to the one side of the ceramic substrate, to form a metal circuit plate having a desired circuit pattern, wherein said recessed portion has a shape similar to the desired circuit pattern for shortening the time required to etch the metal plate.