| US 7,610,678 B2 | ||
| Heat transfer sheet, heat transfer structural body and manufacturing method of the heat transfer structural body | ||
| Hideshi Tokuhira, Kawasaki (Japan); Hiroaki Date, Kawasaki (Japan); Hiroki Uchida, Kawasaki (Japan); and Minoru Ishinabe, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Dec. 16, 2004, as Appl. No. 11/12,147. | ||
| Claims priority of application No. 2004-239960 (JP), filed on Aug. 19, 2004. | ||
| Prior Publication US 2006/0037741 A1, Feb. 23, 2006 | ||
| Int. Cl. B21D 53/02 (2006.01); H05K 7/20 (2006.01) | ||
| U.S. Cl. 29—890.03 [165/146; 165/185; 165/905; 361/704] | 17 Claims |
| 12. A method for manufacturing a heat transfer structural body comprising a heat generating element, a heat dissipating element,
and a heat transfer sheet bonded between the heat generating element and the heat dissipating element to thereby transfer
heat from the heat generating element to the heat dissipating element, the method comprising the steps of:
forming patterns with an insulative resin on respective bonding surfaces of the heat generating element and the heat dissipating
element;
applying a mixed material of a metal and a resin onto the respective bonding surfaces of the heat generating element and/or
the heat dissipating element on which the pattern has been formed with the insulative resin by arranging resin connection
portions corresponding to the patterns of the insulative resin; and providing metal connection portions in regions exclusive
of the insulative resin; and
aligning the patterned insulative resin formed on the heat generating element with the corresponding patterned insulative
resin formed on the heat dissipating element to thereby heat-bond the heat generating element, the mixed material and the
heat dissipating element;
wherein said regions have respective metal content ratios different from one another, and the insulative resin are located
in an area free of the metal connection portions.
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