Patent ID: 6374905
Filing Date: 2002-04-23
Classification: F28D,F28F,H01L

Abstract:
A heat sink for fastening to an integrated circuit comprising:a planar base member having an upper surface and an opposing lower mounting surface for fastening to an integrated circuit and receiving heat from the integrated circuit through the lower surface, the planar base member having a first heat pipe embedded therein having a length and width, the length exceeding the width, with the length of the first heat pipe being substantially parallel to the lower surface, the first heat pipe transferring heat across the planar base member to provide a more uniform temperature distribution across the base member; the planar base member having at least one protrusion projecting from the upper surface, the protrusion having a second heat pipe embedded therein having a length and width, with the length of the second heat pipe being substantially inclined with respect to the mounting surface, the entire second heat pipe being spaced further from the mounting surface than the entire first heat pipe, the first heat pipe and the second heat pipe having intersecting axes, the second heat pipe being thermally coupled to the first heat pipe and transferring heat within the protrusion.