To provide an addition-curable silicone composition having self adhesiveness that has a moderate viscosity (dischargeability), is excellent in nonfluidity (shape stability at heat curing) and light reflecting properties, and used especially for light reflecting material for LEDs, and an optical semiconductor device using the addition-curable silicone composition.
The self-adhesive addition-curable silicone composition for optical semiconductor devices includes: (A) 100 pts.mass of an organopolysiloxane having at least two alkenyl groups bonded to a silicon atom in one molecule; (B) an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to a silicon atom and at least one alkoxy group in one molecule, wherein the number of total Si-H groups is 1.4-5.0 times the number of total alkenyl groups of the component (A); (C) 8-30 pts.mass of aerosol silica with respect to 100 pts.mass of the sum of the components (A) and (B); (D) a white pigment; and (E) a curing catalyst.
KOZAI TOSHIYUKI
KIMURA SHINJI
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa