US 12,263,669 B2
Composite heat dissipation material
Ko-Chun Chen, Kaohsiung (TW)
Assigned to WAH HONG INDUSTRIAL CORP., Kaohsiung (TW)
Filed by WAH HONG INDUSTRIAL CORP., Kaohsiung (TW)
Filed on Apr. 19, 2022, as Appl. No. 17/659,663.
Claims priority of application No. 110119020 (TW), filed on May 26, 2021.
Prior Publication US 2022/0379583 A1, Dec. 1, 2022
Int. Cl. B32B 9/00 (2006.01); B32B 7/12 (2006.01); B32B 9/04 (2006.01); H05K 7/20 (2006.01)
CPC B32B 9/007 (2013.01) [B32B 7/12 (2013.01); B32B 9/041 (2013.01); B32B 2307/302 (2013.01); H05K 7/2039 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A composite heat dissipation material, comprising:
at least one first artificial graphite layer;
at least one second artificial graphite layer; and
a graphitic heat dissipation layer, comprising a graphite material layer, wherein the graphitic heat dissipation layer is disposed between the at least one first artificial graphite layer and the at least one second artificial graphite layer, the graphite material layer is not formed from an artificial graphite material, and the graphitic heat dissipation layer is scarfed with one of the at least one first artificial graphite layer and one of the at least one second artificial graphite layer by interspersing graphite, and
wherein a difference value between a thermal conductivity coefficient of the graphite material layer and a thermal conductivity coefficient of each of the at least one first artificial graphite layer is not less than 100 w/mK, and
wherein the composite heat dissipation material is configured to dissipate heat energy generated from a heat source, the at least one second artificial graphite layer is disposed between the heat source and the graphitic heat dissipation layer, and a number of layers of the at least one second artificial graphite layer is more than a number of layers of the at least one first artificial graphite layer.