Heat spreader with vapor chamber and method for manufacturing the same

Abstract

The heat spreader includes a flattened casing which defines a vapor chamber therein, a wick structure formed on an inner face of the casing and a supporting frame received in the vapor chamber. The supporting frame includes a plurality of supporting wires. Each of the supporting wires has a column-spiral configuration.

1 . A heat spreader comprising:
 a casing defining a vapor chamber therein;   a working liquid contained in the vapor chamber;   a wick structure formed on an inner face of the casing and correspondingly surrounding the vapor chamber; and   a supporting frame received in the vapor chamber and comprising a plurality of supporting wires, and each of the supporting wires having a column-spiral configuration.   
     
     
         2 . The heat spreader as claimed in  claim 1 , wherein each of the supporting wires is an elongated spring. 
     
     
         3 . The heat spreader as claimed in  claim 1 , wherein the supporting wires are disposed horizontally in the vapor chamber. 
     
     
         4 . The heat spreader as claimed in  claim 1 , wherein the supporting wires comprise a plurality of first supporting wires and a plurality of second supporting wires interlacing with the first supporting wires. 
     
     
         5 . The heat spreader as claimed in  claim 4 , wherein the first supporting wires crisscross with the second supporting wires. 
     
     
         6 . The heat spreader as claimed in  claim 1 , wherein the casing is plate-shaped and comprises a base and a cover located above the base, the supporting wires are sandwiched between the base and the cover. 
     
     
         7 . The heat spreader as claimed in  claim 1 , wherein the supporting wires are spaced from and parallel to each other. 
     
     
         8 . The heat spreader as claimed in  claim 1 , wherein wave troughs of an upper one of the supporting wires engage with respective wave crests of an adjacent lower one of the supporting wires. 
     
     
         9 . The heat spreader as claimed in  claim 1 , wherein the supporting wires connect with each other to form a zigzag configuration. 
     
     
         10 . The heat spreader as claimed in  claim 1 , wherein the supporting wires connect with each other to have a configuration of a rectangular vortex, which extends from a circumference of the vapor chamber gradually to a center of the vapor chamber. 
     
     
         11 . A method for manufacturing a heat spreader comprising:
 providing a flattened casing defining a vapor chamber therein and having at least an opening in a side thereof,   forming a wick structure on an inner face of the casing;   providing a supporting frame comprising a plurality of supporting wires, and each of the supporting wires having a column-spiral configuration;   placing the supporting frame into the casing; and   injecting working liquid into the vapor chamber and sealing the casing.   
     
     
         12 . The method as claimed in  claim 11 , wherein the supporting wires are disposed horizontally in the vapor chamber. 
     
     
         13 . The method as claimed in  claim 11 , wherein the supporting wires comprise a plurality of first supporting wires and a plurality of second supporting wires interlacing with the first supporting wires. 
     
     
         14 . The method as claimed in  claim 11 , wherein wave troughs of an upper one of the supporting wires engage with respective wave crests of an adjacent lower one of the supporting wires. 
     
     
         15 . The method as claimed in  claim 11 , wherein the supporting frame integrally extends along a zigzag line. 
     
     
         16 . The method as claimed in  claim 11 , wherein the supporting frame integrally extends along a vortex from a circumference of the vapor chamber gradually to a center of the vapor chamber.