| abstract |
Wherein the base portion comprises at least one metal layer, and the heat radiating portion comprises a metal layer and a graphite layer, wherein the metal layer and the graphite layer are formed by using a composition comprising a polyvinyl acetal resin, wherein the base portion includes a base portion contacting the heat generating element and the base portion comprises a heat dissipating portion for dissipating heat received from the heat generating element. Wherein the heat sink comprises a metal layer and a graphite layer, wherein the metal layer and the graphite layer are made of a composition comprising a polyvinyl acetal resin. Wherein the heat sink is disposed so as to cover the heating element. |