Patent ID: 7690905

Claim:
An apparatus for manufacturing a semiconductor device, wherein the semiconductor device includes a semiconductor chip, a lead frame and a resin mold, wherein the semiconductor chip is disposed on a die pad of the lead frame, and wherein the semiconductor chip together with the lead frame is packaged with the resin mold in such a manner that an exposed area of the semiconductor chip is exposed to an outside of the resin mold, the apparatus comprising: a first mold having a first cavity for providing a shape of the resin mold on a first side of the semiconductor device, and a convex part for forming the exposed area of the semiconductor chip; a second mold having a second cavity for providing a shape of the resin mold on a second side of the semiconductor device; a buffer sheet which is disposed between the convex part and the semiconductor chip for covering the exposed area of the semiconductor chip in order to prevent a resin material of the resin mold from adhering to the exposed area; a pressure device configured to apply a first pressure to the convex part; and a pressure sensor; wherein: the convex part is an independent element so that the convex part is separately movable from an other part of the first mold; the convex part is configured to close to and leave from the semiconductor chip independently from the other part of the first mold based on the first pressure applied thereto by the pressure device; the pressure sensor detects a second pressure by the convex part and feed backs data of the second pressure to the pressure device; and the pressure device controls the first pressure based on the data of the second pressure received from the pressure sensor.