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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10947448 B1

PDFFull Text
Date of Patent:
Mar. 16, 2021

Filed:

Feb. 27, 2018

Method for manufacturing wavelength conversion member

Applicant:

Nichia Corporation, Anan, JP;

Inventors:

Tadayoshi Yanagihara, Tokushima, JP;

Naoto Fujioka, Tokushima, JP;

Keisuke Suzuki, Anan, JP;

Assignee:

NICHIA CORPORATION, Anan, JP;

Attorney:

Hunton Andrews Kurth LLP

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
C09K 11/02 (2006.01); C04B 35/117 (2006.01); C04B 35/645 (2006.01); F21V 9/30 (2018.01); C09K 11/77 (2006.01); C04B 35/44 (2006.01); C04B 35/626 (2006.01);
U.S. Cl.
CPC ...
C09K 11/025 (2013.01); C04B 35/117 (2013.01); C04B 35/44 (2013.01); C04B 35/6265 (2013.01); C04B 35/62685 (2013.01); C04B 35/6455 (2013.01); C09K 11/7774 (2013.01); F21V 9/30 (2018.02); C04B 2235/3215 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3222 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/445 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/604 (2013.01); C04B 2235/656 (2013.01); C04B 2235/6583 (2013.01); C04B 2235/661 (2013.01); C04B 2235/663 (2013.01); C04B 2235/664 (2013.01); C04B 2235/764 (2013.01); C04B 2235/77 (2013.01);
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.(YGdCe)AlO  (I)wherein a and b satisfy 0≤a≤0.3 and 0<b≤0.022.

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