Patent ID: 8466483
Filing Date: 2013-06-18
Classification: C08K,H01L

Abstract:
1. An epoxy resin composition for an optical semiconductor device having an optical semiconductor element mounting region and having a reflector that surrounds at least a part of the region, the epoxy resin composition being an epoxy resin composition for forming the reflector, the epoxy resin composition comprising the following ingredients (A) to (D): (A) an epoxy resin; (B) a curing agent; (C) a white pigment; and (D) at least one antioxidant selected from the group consisting of 2,6-di-t-butyl-4-methylphenol, triethylene glycol bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate], 1,6-hexanediol bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 2,4-bis(n-octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-triazine, pentaerythrityl tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 2,2-thiodiethylene bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, N,N′-hexamethylene(3,5-di-t-butyl-4-hydroxyhydrocinnamamide), diethyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, alkyl esters of thiopropionic acid and derivatives thereof, alkylpropionic acid esters of thiobisphenols and derivatives thereof, mercaptobenzimidazole and derivatives thereof, bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, 1,2,3,4-tetrakis(2,2,6,6-tetramethyl-4-piperidyloxycarbonyl)butane, succinic acid/dimethyl-1-(2-hydroxyethyl-4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensates, 1-(3,5-di-t-butyl-4-hydroxyphenyl)-1,1-bis(2,2,6,6-tetramethyl-4-piperidyloxycarbonyl)pentane, N,N-bis(3-aminopropyl)ethylenediamine, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, and bis(octyl-2,2,6,6-tetramethyl-4-piperidyl)sebacate.