Patent ID: 7681310
Filing Date: 2010-03-23
Classification: H05K,Y10T

Abstract:
1. A method for fabricating a double-sided wiring board for mounting an electronic component thereon comprising metal wiring patterns formed both on upper and lower sides of an electrically-insulating board, the method comprising in the following order: laminating a metal layer with a support substrate on both side of the electrically-insulating board, the metal wiring patterns being formed by the metal layer; forming a through-hole and/or a blind via-hole in the electrically-insulating board through the metal layer with the support substrate on at least one side of the electrically-insulating board after said laminating; removing the support substrate from the metal layer after said forming so that the metal layer is left on the electrically-insulating board; and electrically connecting the metal wiring patterns to each other through the through-hole and/or the blind via-hole after said removing said support substrate, wherein the metal layer with the support substrate comprises a carrier layer of a metal material, a release layer formed on the carrier layer, and the metal layer formed on the release layer, and wherein the metal layer is bonded to the electrically-insulating board.