OPTICAL SEMICONDUCTOR DEVICE AND TRANSPARENT OPTICAL MEMBER

摘要

Disclosed is an optical semiconductor device comprising a semiconductor light-emitting element or a semiconductor light-receiving element sealed with a sealing material, wherein the sealing material is hardly deteriorated and has low water absorbability. A silicon compound containing cage silsesquioxane compounds represented by the formulae shown below or partial polymerization products produced by the partial addition reaction of these compounds is used to seal a semiconductor light-emitting element or a semiconductor light-receiving element. (AR¹R²SiOSiO_1.5)_n(BR³R⁴SiOSiO_1.5)_s(HOSiO_1.5)_m-n-s (R⁵R⁶HSiOSiO_1.5)_q(ER⁷R⁸SiOSiO_1.5)_r(HOSiO_1.5)_p-q-r [wherein A represents a group having a carbon-carbon unsaturated bond or a linear hydrocarbon group having a carbon-carbon unsaturated bond; B and E independently represent a saturated alkyl group or a hydroxy group; R¹, R², R³, R⁴, R⁵, R⁶, R⁷ and R⁸ independently represent a methyl group, a phenyl group or the like; m and q independently represent a number selected from 6, 8, 10 and 12; n represents an integer of 2 to m; q represents an integer of 2 to p; r represents an integer of 0 to p-q; and s represents a number of 0 to m-n.