Patent ID: 6989293
Filing Date: 2006-01-24
Classification: H01L,H05K

Abstract:
1. A method of fabricating a thermally enhanced packaging structure, comprising: (a) providing a printed circuit board (PCB) having a top surface and a bottom surface, the top surface having a packaging area and a first external device contact area, the packaging area having a chip attaching region and a first contact beyond the chip attaching region, the chip attaching region having a hole through the PCB, the first external device contact area having a second contact electrically connecting to the first contact; (b) providing a heat-conductive substrate having a first surface and a second surface; (c) laminating the first surface of the heat-conductive substrate and the bottom surface of the PCB, at least part of the heat-conductive substrate exposed by the hole through the PCB; (d) attaching a first chip, having a bond pad, to the heat-conductive substrate exposed by the hole through the PCB; (e) forming a conductor electrically connecting the first contact and the bond pad; and (f) forming an isolation structure isolating the first chip, the bond pad, the conductor, and the first contact from the external environment.