Patent ID: 7911794
Filing Date: 2011-03-22
Classification: H01L

Abstract:
1. A semiconductor package comprising: a package main body including a base portion having a first surface and a second surface on a side opposite to the first surface, and a semiconductor device accommodating portion provided on the first surface, in which a semiconductor device is accommodated; electric terminals provided in the semiconductor device accommodating portion, electrically connected to the semiconductor device, and exposed to an outer surface of the semiconductor device accommodating portion; and a plurality of high heat transfer elements, each heat transfer element having a heat conductivity higher than that of the base portion, disposed in the base portion to extend from a heat generation site corresponding position corresponding to a heat generating site of the semiconductor device to a position in an outside of the heat generation site corresponding position, transferring heat generated from the heat generating site of the semiconductor device from the heat generation site corresponding position to the outside position in the base portion, the base portion being configured by bringing a plurality of thin plates in close contact with each other to bond the thin plates to each other integrally, each of the high heat transfer elements being independent from the base portion, and including a combination of a closed and elongated flow passage extending from the heat generation site corresponding position to the outside position in the base portion and heat transfer fluid sealed in the flow passage to transfer heat by phase-change thereof, each closed and elongated flow passage including a proximal end located in or near the heat generation site corresponding position, and a distal end located in the outside position, and the proximal ends of the closed and elongated flow passages surrounding the heat generation site corresponding position.