Wavelength conversion member, and light emitting device using same

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United States of America Patent

PATENT NO 11584682
APP PUB NO 20210230047A1
SERIAL NO

17232426

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a wavelength conversion member that is less decreased in luminescence intensity with time by irradiation with light of an LED or LD and a light emitting device using the wavelength conversion member. A wavelength conversion member is formed of an inorganic phosphor dispersed in a glass matrix, wherein the glass matrix contains, in % by mole, 30 to 85% SiO2, 0 to 20% B2O3, 0 to 25% Al2O3, 0 to 3% Li2O, 0 to 3% Na2O, 0 to 3% K2O, 0 to 3% Li2O+Na2O+K2O, 0 to 35% MgO, 0 to 35% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 4% ZnO, and the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.

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Patent Owner(s)

  • NIPPON ELECTRIC GLASS CO. LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Naoki Otsu, JP 43 319
Murata, Takashi Otsu, JP 165 2849

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