Patent ID: 7803658
Filing Date: 2010-09-28
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: (a) providing a wiring board including a core material having a front surface and rear surface opposed to the front surface, a plurality of first conductive portions formed on the front surface of the core material, a first film-type resist film formed on the front surface of the core material such that the plurality of first conductive portions are exposed from the first film-type resist film, a plurality of second conductive portions formed on the rear surface of the core material, and a second film-type resist film formed on the rear surface of the core material such that the plurality of second conductive portions are exposed from the second film-type resist film; (b) mounting a semiconductor chip, including a main surface, a plurality of pads formed on the main surface and a back surface opposed to the main surface, on the first film-type resist film of the wiring board via a film-type adhesive material; (c) electrically connecting the plurality of pads of the semiconductor chip with the plurality of first conductive portions via a plurality of wires, respectively; and (d) sealing the semiconductor chip and the plurality of wires with a resin, wherein the wiring board provided in the step (a) is formed by steps comprising: (a1) providing the core material; (a2) disposing the first and second film-type resist films over the front and rear surfaces of the core material, respectively; and (a3) fixing the first and second film-type resist films to the core material by pressing the first and second film-type resist films.