There is provided a thermosetting light-reflecting resin composition that has a high level of various characteristics required of optical semiconductor element mounting boards, such as optical properties and thermal discoloration resistance, provides high releasability during molding such as transfer molding, and allows molding processes to be performed continuously. There are also provided a highly-reliable optical semiconductor element mounting board and an optical semiconductor device each produced with the resin composition, and methods for efficient production thereof. A thermosetting light-reflecting resin composition is prepared and used, which includes (A) an epoxy resin, (B) a curing agent, (C) a curing catalyst, (D) an inorganic filler, (E) a white pigment, (F) an additive, and (G) a release agent as major components, wherein the resin composition, after curing, has a diffuse reflectance of 80% or more at a light wavelength of 400 nm; and the resin composition is possible to perform transfer molding 100 times or more continuously.
本发明提供了一种热固性光反射
树脂组合物,该组合物具有光学半导体元件安装板所需的高
水平的各种特性,如光学特性和耐热变色性,在转移模塑等模塑过程中具有高脱模性,并可连续执行模塑工序。此外,还提供了使用该
树脂组合物生产的高可靠性光半导体元件安装板和光半导体器件及其高效生产方法。制备并使用了一种热固性光反射
树脂组合物,其主要成分包括(A)环氧
树脂、(B)固化剂、(C)固化催化剂、(D)无机填料、(E)白色
颜料、(F)添加剂和(G)脱模剂,其中固化后的
树脂组合物在光波长为 400 纳米时的漫反射率为 80% 或以上;并且该
树脂组合物可以连续进行 100 次或更多次的转移成型。