Integrated circuit heat pipe heat spreader with through mounting holes

Abstract

A heat pipe with superior heat transfer between the heat pipe and the heat source and heat sink. The heat pipe is held tightly against the heat source by mounting holes which penetrate the structure of the heat pipe but are sealed off from the vapor chamber because they each are located within a sealed structure such as a pillar or the solid layers of the casing surrounding the vapor chamber. Another feature of the heat pipe is the use of more highly heat conductive material for only that part of the wick in the region which contacts the heat source, so that there is superior heat conductivity in that region.

1 . A heat pipe for spreading heat comprising: 
 a boundary structure including spaced-apart first and second plates that define an enclosed vapor chamber;    at least one hollow column positioned within said vapor chamber and sealingly bonded to said first and second plates, having an open first end that opens through said first plate and an open second end that opens through said second plate so as to form at least one mounting hole that is isolated from said vapor chamber.    
   
   
       2 . A heat pipe for spreading heat according to  claim 1  wherein said spaced-apart first and second plates include confronting interior surfaces; and 
 a wick positioned upon said confronting interior surfaces of said first and second plates the exterior surface of said at least one hollow column disposed within said vapor chamber.