Thermal conductive sheet, insulating sheet, and heat dissipating member

Abstract

A thermal conductive sheet contains a resin and a plate-like or flake-like filler. The average orientation angle of the filler is 29 degrees or more and the maximum orientation angle thereof is 65 degrees or more with respect to the plane direction of the thermal conductive sheet.

1 . A thermal conductive sheet comprising:
 a resin and a plate-like or flake-like filler, wherein   the average orientation angle of the filler is 29 degrees or more and   the maximum orientation angle thereof is 65 degrees or more with respect to the plane direction of the thermal conductive sheet.   
     
     
         2 . The thermal conductive sheet according to  claim 1 , wherein
 the resin comprising a first resin and a second resin, and   a difference between the softening temperature of the first resin and that of the second resin is 20° C. or more.   
     
     
         3 . The thermal conductive sheet according to  claim 2 , wherein
 a difference between the softening temperature of the first resin and that of the second resin is 40° C. or more, and   the second resin has an average particle size of 10 to 500 μm and   has its shape retained at a temperature between the softening temperature of the first resin and that of the second resin.   
     
     
         4 . The thermal conductive sheet according to  claim 1 , wherein
 the filler content is 50 to 95 parts by mass with respect to 100 parts by mass of the total amount of the thermal conductive sheet.   
     
     
         5 . An insulating sheet is obtained by using a thermal conductive sheet, wherein
 the thermal conductive sheet comprising a resin and a plate-like or flake-like filler, and   the average orientation angle of the filler is 29 degrees or more and   the maximum orientation angle thereof is 65 degrees or more with respect to the plane direction of the thermal conductive sheet.   
     
     
         6 . A heat dissipating member is obtained by using a thermal conductive sheet, wherein
 the thermal conductive sheet comprising a resin and a plate-like or flake-like filler, and   the average orientation angle of the filler is 29 degrees or more and   the maximum orientation angle thereof is 65 degrees or more with respect to the plane direction of the thermal conductive sheet.