Patent ID: 7109057

Claim:
A method of forming a semiconductor device, comprising: preparing a sealing apparatus having an upper mold and a lower mold, the lower mold including a recess and a resin introduction part formed at a center of a bottom surface of the recess; putting a solid resin into the resin introduction part; placing a semiconductor wafer having a main surface on which a circuit element is formed, in a cavity which is formed in the recess when the upper and lower molds are closed, wherein the main surface includes a center area and a peripheral area, which surrounds the center area, and wherein the resin introduction part faces the center of the main surface of the semiconductor wafer or its neighborhood; melting the solid resin, and introducing the melted resin into the cavity; sealing the main surface of the semiconductor wafer by flowing the melted resin from the center area to the peripheral area; and dividing the resin sealed semiconductor wafer into semiconductor devices.