Patent ID: 6692818
Filing Date: 2004-02-17
Classification: H01L,H05K,Y10S,Y10T

Abstract:
A circuit board comprising:an insulating substrate obtained by curing a thermal conductive resin composition, the thermal conductive resin composition comprising (a) 70 to 95 weight % of an inorganic filler and (b) 5 to 30 weight % of a resin composition that comprises a thermosetting resin in an uncured state, a thermoplastic resin, and a latent curing agent, wherein a circuit pattern is formed on at least one surface of the insulating substrate, and holes are formed to penetrate both surfaces of the insulating substrate, and 10 to 100 parts by weight of the thermoplastic resin are present with respect to 100 parts by weight of the thermosetting resin.