US 12,130,095 B2
Thermal interface materials
Yong Joon Lee, Burlington, MA (US); William J. Scimeca, Boston, MA (US); Nicolo Brambilla, Brookline, MA (US); and Daniel Rich, Cambridge, MA (US)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed on May 10, 2021, as Appl. No. 17/316,055.
Application 17/316,055 is a continuation of application No. 17/165,363, filed on Feb. 2, 2021, granted, now 11,326,843.
Application 17/165,363 is a continuation of application No. PCT/US2020/044286, filed on Jul. 30, 2020.
Claims priority of provisional application 62/880,370, filed on Jul. 30, 2019.
Prior Publication US 2021/0265234 A1, Aug. 26, 2021
Int. Cl. F28F 21/06 (2006.01); B29C 43/00 (2006.01); B29C 43/20 (2006.01); B29C 43/32 (2006.01); B29C 69/00 (2006.01); B29K 101/12 (2006.01); B29K 507/04 (2006.01); B29L 31/18 (2006.01); B32B 25/08 (2006.01); B32B 27/20 (2006.01); H01L 23/367 (2006.01); H01L 23/373 (2006.01); H05K 7/20 (2006.01)
CPC F28F 21/065 (2013.01) [B29C 43/003 (2013.01); B29C 43/203 (2013.01); B29C 43/32 (2013.01); B29C 69/001 (2013.01); B32B 25/08 (2013.01); B32B 27/20 (2013.01); H01L 23/3675 (2013.01); H01L 23/3733 (2013.01); H05K 7/20481 (2013.01); B29K 2101/12 (2013.01); B29K 2507/04 (2013.01); B29K 2995/0013 (2013.01); B29L 2031/18 (2013.01); B32B 2307/302 (2013.01)] 14 Claims
 
1. A thermal interface material comprising:
a sheet extending between a first major surface and a second major surface, the sheet comprising:
a base material; and
a filler material embedded in the base material comprising anisotropically oriented thermally conductive elements;
wherein the thermally conductive elements are oriented along a primary direction from the first major surface towards the second major surface to promote thermal conduction though the sheet along the primary direction;
wherein the base material is substantially free of silicone;
wherein the thermal conductivity of the sheet along the primary direction is at least 20 W/mK; and wherein the thermal interface material comprises carbon elements continuously extending through the sheet from the first major surface to the second major surface along the primary direction and configured to promote heat flow from the first surface to the second surface.