Patent ID: 8378442
Filing Date: 2013-02-19
Classification: C08K,C08L

Abstract:
1. An epoxy resin composition for optical semiconductor light-receiving element encapsulation, said epoxy resin composition comprising the following components (A) to (D): (A) an epoxy resin; (B) a curing agent; (C) a curing accelerator; and (D) a yellow colorant classified into C.I. Solvent in Color Index (CI), wherein the component (D) is contained in an amount of 0.01% by weight to 10% by weight based on the whole of the epoxy resin composition, wherein the epoxy resin composition has a light transmittance of 80% or less in a short wavelength region of from 380 to 420 nm and a light transmittance ranging from 10 to 100% in a longer wavelength region of from 420 to 780 nm than the short wavelength region when being molded into a 0.2 mm thickness molded object.