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US007760507B2

(12) United States Patent ao) Patent No.: Us 7,760,507 B2

Jewrametal. (45) Date of Patent: Jul. 20,2010

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An interconnect structure for operable placement between a first body and a second body, wherein the interconnect structure includes a first surface for operable juxtaposition with the first body, a second surface for operable juxtaposition with the second body, and a thickness dimension defined between the first and second surfaces. The interconnect structure includes a first thermally conductive material and a second electrically conductive material, wherein the second electrically conductive material is formed in one or more distinct structures, with the structures forming at least one substantially continuous pathway of the second material through the thickness dimension. The interconnect structure exhibits a compressive modulus along a thickness axis of less than about 100 p si.

20 Claims, 2 Drawing Sheets

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2003/0146266 Al 8/2003 Chaudhuri et al.

2003/0150604 Al * 8/2003 Koningetal 165/185

428/344 2003/0187116 Al * 10/2003 Misra etal 524/404

524/270 2004/0036161 Al 2/2004 Williams et al.

2004/0037044 Al 2/2004 Cook etal.

2004/0048050 Al 3/2004 Cassatetal.

2004/0095727 Al * 5/2004 Houle 361/704

2005/0049350 Al * 3/2005 Tonapietal 524/492

2005/0057908 Al 3/2005 Egitto et al.

2005/0064204 Al 3/2005 Lallietal.

2006/0097382 Al 5/2006 Mori etal.

2006/0122304 Al * 6/2006 Matayabas, Jr 524/430

2007/0231560 Al* 10/2007 Zhang et al 428/323

2007/0251639 Al * 11/2007 Jayaraman et al 156/283

2008/0067669 Al * 3/2008 Buttel 257/706

FOREIGN PATENT DOCUMENTS

EP 0 790 762 8/1997

EP 1 583 146 10/2005

JP 02256260 10/1990

JP 04099051 3/1992

WO WO 2005/024942 3/2005

WO WO 2005/057674 6/2005

OTHER PUBLICATIONS

"Thermal behaviour of electric connector coating irradiated by a laser beam", Seminar, N et al., Microelectronic Journal, 2002, vol. 33, No. 9, pp. 705-710.

"Integrated micro thermoelectric cooler: Theory, fabrication and characterization" de Silva et al., Dissertation of Abstracts International, 2005, vol. 66/02-B, p. 1125.

"Electrically conductive and thermally conductive materials for electronic packaging", Liu, Dissertation of Abstracts International, Feb. 1,2005, vol. 65/12-B,p. 6560.

"Study of thermally reworkable epoxy materials and thermal conductivity enhancement using carbon fiber for electronics packaging", Li, Dissertation of Abstracts International, Nov. 2003, vol. 64/10, p. 5160.

"Evaluating thermal and mechanical properties of electrically conductive adhesives for electronic applications," Xu, Dissertation of Abstracts International, Apr. 2001, vol. 63/03-B, p. 1522.

361/705 * cited by examiner

361/719
361/710
361/708

228/56.3
428/620

257/713
361/704
428/323
361/719
438/122

204/298.12

524/404

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