Patent ID: 8479385
Filing Date: 2013-07-09
Classification: H01L,H05K,Y10T

Abstract:
1. A method of producing a wiring substrate, comprising: producing a substrate body including a first primary surface on which a semiconductor chip mounting area is provided and a second primary surface opposed to the first primary surface; attaching a stiffener member on the first primary surface of the substrate body by an adhesive, the stiffener member including an opening which the semiconductor chip mounting area is exposed from; exposing connection pads and an insulation layer surface at a location at which the opening of the stiffener member is provided at the semiconductor chip mounting area; and connecting lead pins to corresponding connection pads provided on the second primary surface by way of electrically conductive members so that the lead pins are provided on the second primary surface after attaching the stiffener member on the first primary surface.