Patent ID: 8044128

Claim:
A white heat-curable silicone/epoxy hybrid resin composition for optoelectronic devices, comprising: (A) a heat-curable silicone resin which has the average compositional formula (2): R 3 a Si(OR 4 ) b (OH) c O (4−a−b−c)/2 (2) wherein R 3 is each independently an organic group of 1 to 20 carbon atoms, R 4 is each independently an organic group of 1 to 4 carbon atoms, a, b and c are numbers in the range: 0.8≦a≦1.5, 0≦b≦0.3, 0.001≦c≦0.5, and 0.801≦a+b+c<2, (B) a triazine derived epoxy resin composition, (C) a white pigment, (D) an inorganic filler excluding the white pigment, and (E) an antioxidant, wherein said antioxidant (E) is a phosphite compound having the general formula (1): P(OR 1 )(OR 2 ) 2 (1) wherein R 1 and R 2 are each independently an organic group of at least 6 carbon atoms, and components (A) and (B) are present in a weight ratio of from 5:95 to 95:5.