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Bendable heat spreader with metallic wire mesh-based microstructure and method for fabricating same

  • US 20060098411A1
  • Filed: 05/27/2005
  • Published: 05/11/2006
  • Est. Priority Date: 11/11/2004
  • Status: Abandoned Application
First Claim
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1. A method for fabricating a heat spreader, comprising:

  • providing an upper cover and a lower cover, each of the covers being a sheet of metallic material and having a perimeter and an inner surface;

    attaching metallic meshes to the inner surface of the upper cover and the inner surface of the lower cover using diffusion bonding so as to form a capillary structure on the respective inner surface;

    interposing a plurality of reinforcing members between the inner surfaces of the upper cover and the lower cover to which the metallic meshes are attached;

    bonding the upper cover, the lower cover and the reinforcing members together using diffusion bonding, such that the inner surfaces of the upper cover and the lower cover define a cavity and the reinforcing members are bonded therebetween;

    evacuating the cavity to form a vacuum;

    filling a working fluid into the evacuated cavity; and

    sealing the cavity with the working fluid therein.

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