Patent ID: 6770236
Filing Date: 2004-08-03
Classification: B29C,B30B,H01L

Abstract:
A method of resin molding, comprising the steps of:covering a specific area of a molding die, in which air is left, with release film; clamping a substrate, in which an electric device is mounted on one face, and the release film between an upper die and a lower die of the molding die so as to air-tightly seal the specific area; discharging the air from the sealed specific area; and filling a molding section with resin, wherein the release film covers a whole parting face of the molding die, which faces a pot thereof: wherein the one face of the substrate is covered with the release film in said covering step, the one face of the substrate is air-tightly sealed in said clamping step, and wherein an air vent is formed in at least one of the upper die and the lower die, the air is discharged from the sealed specific area via the air vent.