Patent ID: 7384582
Filing Date: 2008-06-10
Classification: B29C,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: (a) providing a first mold having a main surface and having a first concaved portion provided thereon, and a second mold having a main surface and having a second concaved portion provided thereon; (b) providing a resin containing plural particles; (c) providing a sheet made of a material that can be impregnated and permeated by the resin, and having a through hole forming a shape which is substantially identical to a shape of the second concaved portion of the second mold; (d) opposing and contacting the main surface of the first mold and the main surface of the second mold to each other, and disposing the sheet between the main surface of the first mold and the main surface of the second mold to position the through hole so as to be aligned with the second concaved portion; (e) after the step (d), injecting the resin to an inside of the first concaved portion; (f) after the step (e), removing the sheet on the main surface of the first mold and the second mold and the resin; (g) after the step (f), opposing and contacting the main surface of the first mold and the main surface of the second mold to each other, and disposing a semiconductor chip to the inside of the first concaved portion; and (h) after the step (g), filling an encapsulating resin to the inside of the first concaved portion thereby encapsulating the semiconductor chip, wherein the sheet has a slit; wherein the slit is formed in a part corresponding to an air vent of the first mold; and wherein in the step of (e), flowing the resin into the air vent through the slit.