Patent ID: 6594892
Filing Date: 2003-07-22
Classification: H05K,Y10T

Abstract:
A process for the production of a composite ceramic printed wiring board, comprising(1) making a penetration hole having a diameter of 0.1 to 0.8 mm in a ceramic board (A) having an open porosity of at least 5% and a thickness of 0.1 to 10 mm, (2) fixing metal (M) to the penetration hole such that the metal (M) penetrates through the penetration hole, (3) impregnating a heat-resistant resin precursor (R) under vacuum, polymerizing the heat-resistant resin precursor (R) and polishing both surfaces of the resultant board to produce a resin composite ceramic substrate (MIRA) having a conductive portion for conduction between both surfaces in a predetermined portion, and (4) forming printed wiring networks on one or both surfaces of the resin composite ceramic substrate (MIRA).