Resin composition for optical wiring, and optoelectronic circuit board
AssigneeToray Industries, Inc.
InventorsToshihisa Nonaka, Noboru Asahi, Yoshiko Tatsuta
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Abstract
This invention is a resin composition for optical wiring, comprising an inorganic filler with an average particle size of 1 nm to 100 nm and a resin, having a ratio nf/nr (where nf is the refractive index of the inorganic filler and nr is the refractive index of the resin) of 0.8 to 1.2, a thermal expansion coefficient of −1×10−5 /° C. to 4×10−5/° C., and a true dependency value of its refractive index on the temperature of −1×10−4/° C. to 1×10−4/° C. in a temperature range from −20° C. to 90° C., and substantially incapable of absorbing light in a wavelength range from 0.6 to 0.9 μm or from 1.2 to 1.6 μm. This invention also provides an optoelectronic circuit board.
Claims18
A resin composition for optical wiring, comprising an inorganic filler with an average particle size of 1 nm to 100 nm and a thermosetting resin, said composition having a ratio nf/nr where (nf is the refractive index of the inorganic filler and nr is the refractive index of the) resin of 0.8 to 1.2, a thermal expansion coefficient of −1×10−5/° C. to 4×10−5/° C., and a true dependency value of its refractive index on temperature of −1×10−4/° C. to 1×10−4/° C. in a temperature range from −20° C. to 90° C., and substantially incapable of absorbing light in a wavelength range from 0.6 to 0.9 μm or from 1.2 to 1.6 μm.
A resin composition for optical wiring, comprising an inorganic filler with an average particle size of 1 nm to 100 nm and a thermosetting resin, with the inorganic filler content kept in a range from 5 vol % to 95 vol %, said composition having a ratio nf/nr, where is the refractive index of the inorganic filler and nr is the refractive index of the resin of 0.8 to 1.2, a thermal expansion coefficient of −1×10−5/° C. to 4 ×10−5/° C., and a true dependency value of its refractive index on temperature of −1×10−4/° C. to 1×10−4/° C. in a temperature range from −20° C. to 90° C., and substantially incapable of absorbing light in a wavelength range from 0.6 to 0.9 μm or from 1.2 to 1.6 μm.
Dependencies are inferred from the claim text.