Patent ID: 9466548
Filing Date: 2016-10-11
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a heat spreader including a bottom surface and being electrically conductive; a sheet member including a front surface and a back surface, the front and back surfaces electrically insulated from each other, the front surface contacting the bottom surface of the heat spreader, the sheet member including a peripheral portion that juts out from an edge of the bottom surface; a semiconductor element fixed on the heat spreader and electrically connected to the heat spreader; and an encapsulation resin body in which the front surface of the sheet member, the heat spreader, and the semiconductor element are encapsulated, and at least a portion of the back surface of the sheet member exposed from the encapsulation resin body; wherein the heat spreader includes a corner portion at a corner of the bottom surface, the corner portion includes a C-beveled shape as seen in the plan view, the corner portion is rectangular as seen in the section of the heat spreader.