US 9,808,970 B2
Light-emitting device, method for manufacturing same, and molded part
Masaki Hayashi, Anan (JP); Hiroto Tamaki, Anan (JP); Masafumi Kuramoto, Anan (JP); Tomohide Miki, Anan (JP); Takayuki Sano, Anan (JP); and Tomohisa Kishimoto, Anan (JP)
Assigned to NICHIA CORPORATION, Anan-Shi (JP)
Filed by NICHIA CORPORATION, Anan-Shi, Tokushima (JP)
Filed on May 14, 2013, as Appl. No. 13/893,924.
Application 13/893,924 is a division of application No. 12/026,469, filed on Feb. 5, 2008, granted, now 8,900,710.
Claims priority of application No. 2007-026693 (JP), filed on Feb. 6, 2007.
Prior Publication US 2013/0249127 A1, Sep. 26, 2013
Int. Cl. B29C 45/02 (2006.01); B29C 45/28 (2006.01); B29D 11/00 (2006.01); H01L 33/26 (2010.01); B29K 63/00 (2006.01)
CPC B29C 45/02 (2013.01) [B29C 45/2806 (2013.01); B29D 11/0074 (2013.01); B29K 2063/00 (2013.01); H01L 2224/48247 (2013.01); H01L 2224/48257 (2013.01); H01L 2224/73265 (2013.01); H01L 2924/181 (2013.01); Y10T 428/31511 (2015.04)] 8 Claims
OG exemplary drawing
 
1. A method for manufacturing a molded part for a light-emitting device, wherein the method comprises:
melt mixing a 1,3,5-triazine nucleus derived epoxy resin with an acid anhydride, thereby forming (A) a reaction product in an epoxy group equivalent to acid anhydride group equivalent ratio from 0.6 to 2.0;
mixing the (A) reaction product with (B) an internal parting agent comprising glycerol monostearate having a melting point of 50 to 70° C., (C) a reflective agent including titanium dioxide, (D) an inorganic filler, and (E) a curing catalyst to form a thermosetting epoxy resin composition, wherein the internal parting agent (B) is present in an amount of 0.2 to 5.0% by weight based on the total weight of the composition; and
transfer molding the thermosetting epoxy resin composition in a mold with leads disposed therein, thereby making the molded part comprising the leads and the thermosetting epoxy resin composition in a cured state,
wherein the molded part forms a side surface or a bottom surface of a recess, and has a high reflectance so as to reduce transmission of light from a light-emitting element into the surface, wherein the reflectance is at least 70% at a wavelength of 430 nm or longer, and wherein an (F) antioxidant is mixed with the triazine derived epoxy resin and acid anhydride in the melt mixing step so as to become a part of the (A) reaction product.