Patent ID: 6255376
Filing Date: 2001-07-03
Classification: C08K,H01L

Abstract:
A thermally conductive compound comprising:15 to 60 volume % of a thermoplastic carrier resin comprising, a copolymer of ethylene and at least one monomer selected from the group consisting of vinyl acetate, acrylic acid esters and methacrylic acid esters, or a blend a polyethylene and said copolymer;40 to 85 volume % of at least one thermally conductive filler particles selected from the group consisting of aluminum nitride, boron nitride, aluminum oxide, aluminum, silver, copper and diamond, the thermally conductive filler particles dispersed in the carrier resin; andat least one dispersing agent selected from the group consisting of glycerin fatty acid esters, polymers of glycerin fatty acid esters, organic silanes having both hydrophilic groups and hydrophobic groups, and organic titanates having both hydrophilic groups and hydrophobic groups, at a rate of 0.5 to 5 weight % based on the filler particles, wherein the thermally conductive compound has a thermal conductivity of at least 1 W/m.multidot.K and wherein the thermally conductive compound maintains sufficient plasticity between -40 and 50.degree. C. to neutralize thermal stress caused by components that are held in contact with the thermally conductive compound having different coefficients of thermal expansion.