Patent ID: 7932132

Claim:
A method for manufacturing a semiconductor device, the method comprising: forming an insulating layer on a first surface of a heat sink, wherein the heat sink has a second surface opposite to the first surface; preparing a semiconductor wafer having first and second surfaces opposite to each other, wherein the semiconductor wafer includes an element part having an element, wherein the semiconductor wafer further includes an electrode part located on the element part to provide an electric connection to the element of the element part, wherein the electrode part is disposed on the first surface of the semiconductor wafer; bonding the second surface of the heat sink to the second surface of semiconductor wafer; forming a semiconductor chip through a cutting process, wherein the cutting process includes dividing the semiconductor wafer together with the heat sink and the insulating layer into chips by cutting along a scribe line; mounting the semiconductor chip to a board having a wiring pattern, so that the electrode part of the semiconductor chip is electrically connected to the wiring pattern of the board; and positioning the semiconductor chip and the board relative to a casing made of metal, wherein the positioning includes directing the insulating layer of the semiconductor chip to the casing to enable heat radiation from the heat sink toward the casing via the insulating layer.