Glass for use in wavelength conversion material, wavelength conversion material, wavelength conversion member, and light-emitting device
AssigneeNippon Electric Glass Co., Ltd.
InventorsTakahiro Matano, Tamio Ando, Yoshihisa Takayama
Life of this patent
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Abstract
Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO2, 1 to 30% B2O3, over 4 to 20% Al2O3, 0.1 to 10% Li2O, 0 to below 9% Na2O+K2O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.
Claims8
A wavelength conversion member including a phosphor dispersed in a glass matrix, the glass matrix containing, in terms of % by mass, 55 to 75% SiO2, 1 to 30% B2O3, 5.5 to 20% Al2O3, 0.1 to 10% Li2O, 0 to 5% Na2O, to 8% Na2O+K2O, 0.1 to 10% BaO, and 0.1 to 10% MgO+CaO+SrO+BaO+ZnO.
A wavelength conversion member including a phosphor dispersed in a glass matrix, the glass matrix containing, in terms of % by mass, 55 to 75% SiO2, 1 to 30% B2O3, 5.5 to 20% Al2O3, 0.1 to 10% Li2O, 0 to 5% Na2O, 0 to 8% Na2O+K2O, 0.1 to 4.4% BaO, and 0.1 to 4.4% MgO+CaO+SrO+BaO+ZnO.
Dependencies are inferred from the claim text.