Patent ID: 7595113

Claim:
A light-emitting diode device encapsulated with a cured product of a silicone resin composition comprising: (A) 100 parts by weight of a liquid or solid organopolysiloxane of branched or three-dimensional network structure represented by the average compositional formula (1-1): R p (C 6 H 5 ) q SiO (4−p−q)/2 (1-1) wherein R is independently an unsubstituted monovalent hydrocarbon group, alkoxy group or hydroxyl group, 0.1 to 80 mol % of the entire R groups being alkenyl groups, and p and q are positive numbers satisfying 1≦p+q<2 and 0.20≦q/(p+q)≦0.95, and having a viscosity of at least 100 mPa·s at 25° C.; (B) 2 to 100 parts by weight of an organohydrogenpolysiloxane having at least two SiH bonds in a molecule represented by the average compositional formula (2) R′ a H b SiO (4−a−b)/2 (2) wherein R′ is independently an unsubstituted monovalent hydrocarbon group excluding an aliphatic unsaturated hydrocarbon group, and at least 5 mol % of the entire R′ and H being phenyl groups,“a” is a positive number of 0.7 to 2.1, “b” is a positive number of 0.001 to 1.0, satisfying 0.8≦a+b≦2.6, and having a viscosity of up to 1,000 mPa·s at 25° C., wherein component (B) is a mixture, in a weight ratio between 1:9 and 9:1, of an organohydrogenpolysiloxane of the compositional formula (2) wherein phenyl groups comprise at least 5 mol % to less than 15 mol % of the entire R′ and H and an organohydrogenpolysiloxane of the compositional formula (2) wherein phenyl groups comprise at least 15 mol % to 50 mol % of the entire R′ and H; and (C) a catalytic amount of an addition reaction catalyst.