| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermosetting resin composition for a reflector formed on a substrate of an optical semiconductor device capable of forming a cured product having excellent preservability, rapid curing rate, excellent light reflectivity, heat resistance and light resistance, low linear expansion coefficient and excellent releasability from a mold.SOLUTION: There is provided a thermosetting resin composition which comprises an epoxy resin (A) represented by the formula (I), a curing agent (B), a curing accelerator (C) which is an ionically bonded material of a phosphonium ion and a halogen anion and a white pigment(D). [Rrepresents an epoxy group, the formulas (1b) and (1c); provided that at least one of which is an epoxy group.] |
