Patent ID: 6120301
Filing Date: 2000-09-19
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising the steps of:preparing a substrate obtained by impregnating a glass fiber with an epoxy resin, having an upper surface and a rear surface opposing said upper surface, said substrate including first electrodes formed on said upper surface and second electrodes formed on said rear surface, said first and second electrodes being electrically connected with each other;mounting a semiconductor pellet on said upper surface of substrate, said semiconductor pellet having external terminals formed on a main surface of said pellet, said external terminals being electrically connected with said first electrodes;forming a plurality of bump electrodes on said rear surface of substrate, said bump electrodes being electrically connected with said second electrodes;attaching a frame member for supporting said substrate to said upper surface of said substrate by a thermoplastic resin adhesive; andsealing said semiconductor pellet and said upper surface of said substrate by a resin molding,wherein the step of attaching said frame member to said substrate includes a first sub-step of subjecting said thermoplastic resin adhesive to a first thermal treatment to control an amount of solvent remaining in said thermoplastic resin adhesive and, after the first sub-step, a second sub-step of subjecting said thermoplastic resin adhesive to a second thermal treatment to bond said frame member to said upper surface of said substrate by using said thermoplastic resin adhesive,said second thermal treatment is performed at a temperature below 300.degree. C.; andfurther comprising the step of forming vent holes in the substrate to permit gas emitted from the thermoplastic resin adhesive to be released during the step of attaching the frame member to the substrate.