Patent ID: 6785135
Filing Date: 2004-08-31
Classification: F28D,F28F,H05K

Abstract:
A cooling device comprising:a first substrate having grooves constituting a heat pipe formed therein so as to be exposed to the surface thereof, the grooves including at least a groove positioned in correspondence to a wick and another groove that does not correspond to a wick; a second substrate made of a metal or a material having a thermal conductivity substantially equal to that of a metal, the second substrate having at least the groove for the wick formed at the surface thereof, said surface being joined to the first substrate; and a third substrate into which the second substrate is incorporated so as to be exposed to the surface of the third substrate, said surface of the third substrate being joined to the first substrate; at least one of the first substrate and the third substrate being made of a polyimide resin.