METHOD FOR MANUFACTURING WIRING BOARD

摘要

A method for manufacturing a wiring board includes forming a conductive pattern on an insulation layer, forming on the conductive pattern a resin insulation layer containing a resin and a silica-type filler, and irradiating a laser beam having an absorption rate with respect to the conductive pattern is in an approximate range of 30˜60% such that an opening portion reaching the conductive pattern is formed through the resin insulation layer. The silica-type filler in the resin insulation layer is in an amount of approximately 2˜60 wt. %.