Patent ID: 6940722
Filing Date: 2005-09-06
Classification: F28F,H01L,Y10T

Abstract:
1. A heat dissipating member installed (at the boundary) between a heat dissipating electronic component which reaches a higher temperature than room temperature due to its operation, and a heat-dissipating component which dissipates the heat produced by said heat dissipating electronic component, wherein said heat-dissipating member is a thermally-conducting silicone resin composition comprising 100 wt parts of a silicone resin and 1,000-3,000 wt parts of a thermally-conducting filler, said member is non-fluid at room temperature prior to the operation of said electronic component, but due to the emission of heat when said electronic component operates, said member loses its viscosity, softens or melts so as to effectively fill the gap between said electronic component and said heat-dissipating component, said thermally-conducting filler comprising a low melting point metal powder (1) having a melting temperature of 40-250° C. and a particle diameter of 0.1-100 μm, together with a thermally-conducting powder (2) having a melting temperature exceeding 250° C. and an average particle diameter of 0.1-100 μm, said filler being used such that (1)/[(1)+(2)]=0.2-1.0.