Method for manufacturing wavelength conversion member
AssigneeNichia Corporation
InventorsTadayoshi Yanagihara, Naoto Fujioka, Keisuke Suzuki
Life of this patent
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Abstract
A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. (Y1-a-bGdaCeb)3Al5O12 (I) wherein a and b satisfy 0≤a≤0.3 and 0<b≤0.022.
Claims19
A method for manufacturing a wavelength conversion member, the method comprising:
- providing by applying a cold isostatic pressing (CIP) treatment a green body comprising:
- an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below;
- and
- alumina particles with an alumina purity of 99.0% by mass or more;
- primary-sintering the green body in an air atmosphere to obtain a first sintered body;
- and
- secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body
- (Y1-a-bGdaCeb)3Al5O12 (I)
- wherein a and b satisfy 0≤a≤0.3 and 0<b≤0.022,
- wherein the green body is provided by press molding a mixed powder obtained by mixing the yttrium-aluminum-garnet phosphor and the alumina particles using a dry ball mill.
A method for manufacturing a wavelength conversion member, the method comprising:
- providing by applying a cold isostatic pressing (CIP) treatment a green body comprising:
- an yttrium-aluminum-garnet phosphor;
- and
- alumina particles with an alumina purity of 99.0% by mass or more;
- primary-sintering the green body in an air atmosphere to obtain a first sintered body;
- secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body;
- and
- annealing the second sintered body in an oxygen-containing atmosphere,
- wherein the green body is provided by press molding a mixed powder obtained by mixing the yttrium-aluminum-garnet phosphor and the alumina particles using a dry ball mill.
Dependencies are inferred from the claim text.