BGA heat ball plate spreader, BGA to PCB plate interface
US6552907B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Oct 11, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a heat dissipation structure for an integrated circuit package, comprising a thermally conductive solid layers, one of which has receptacles for holding a thermally conductive flowable material, the heat dissipation structure being placed between the electronic component and the printed circuit board. The present invention is used advantageously with a primary heat sink placed on the top side of the integrated circuit package away from the printed circuit board. The heat dissipation structure preferably hemispherical balls on the package side of a high heat conductive plate to improve heat transfer from the die to the integrated circuit, especially, BGA, substrate to PCB power planes for heat dissipation and leads to improved secondary heat transfer from IC die in BGA packages to the heat spreader power planes in the system PCB. The heat dissipation device allows retro-fit of the heat transfer/transfer mechanism or primary attachment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.