Passive thermal spreader and method
US6679316B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A passive thermal spreader and method of fabrication are disclosed. The passive thermal spreader includes a heat transfer plate formed from laminated plates including an internal sealed thermosyphon defined within the interface of the plates. The preferred embodiment of the passive thermal spreader selected to illustrate the invention includes a pair of distinct thermosyphons defined within the interface of three laminated, stacked plates. Each thermosyphon includes a plurality of channels arranged boustrophedonically. Each of the channels includes an elongate straight portion and an end turn portion for connection to the adjacent channel elongate straight portion. Each elongate straight portion includes a channel divider. The channel divider directly contributes to the high performance of the thermal spreader of the present invention by assisting the transport of the working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.