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Structure and method of attaching a heat transfer part having a compressible interface

  • US 6,896,045 B2
  • Filed: 10/21/2002
  • Issued: 05/24/2005
  • Est. Priority Date: 10/24/2001
  • Status: Active Grant
First Claim
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1. A thermal interface assembly, comprising:

  • a heat sink device having a substantially planar interface surface, and a heat dissipation surface with surface area enhancements thereon;

    a resilient compressible thermal interface material having a first uncompressed thickness, said thermal interface being applied to said interface surface in a predetermined pattern, said pattern having voids therein, wherein said interface material is compressible from said first uncompressed thickness to a second compressed thickness less than said first thickness;

    a pressure sensitive adhesive material having a third thickness approximately equal to said second thickness, said adhesive material being applied to said planar interface surface of said heat dissipating device in said voids in said pattern of said thermal interface material; and

    a heat generating device having a top surface, wherein said heat dissipating device is applied to said top surface with said compressible interface disposed therebetween, said compressible interface being in a compressed state from said first thickness to said second thickness wherein said adhesive material contacts and adheres to said heat generating surface retaining said resilient interface in said compressed state.

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