Patent ID: 9497857
Filing Date: 2016-11-15
CPC Classification: C08G,C08L,H05K,Y10T

Claim Text:
1. A sheet-shaped insulating sheet of a resin composition containing an epoxy resin, a curing agent and an inorganic filler, wherein one or both of the epoxy resin and the curing agent have a naphthalene structure, wherein the inorganic filler contains hexagonal boron nitride, and the hexagonal boron nitride is contained in an amount of 80 to 85 vol % in the entire resin composition, and the hexagonal boron nitride contains coarse particles having an average particle diameter of 10 to 400 μm and fine particles having an average particle diameter of 0.5 to 4.0 μm, wherein the blending rate of the coarse particles is 85% or more.