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.:
Date of Patent:
Jun. 22, 2021
Filed:
Nov. 29, 2018
Nippon Electric Glass Co., Ltd., Otsu, JP;
Tadahito Furuyama, Otsu, JP;
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Abstract
Provided are: a wavelength conversion member capable of reducing the decrease in luminescence intensity with time and the melting of component materials when irradiated with high-power excitation light; a method for manufacturing the same; and a light-emitting device using the wavelength conversion member. A wavelength conversion memberis made of a phosphor powderand a thermally conductive fillerboth dispersed into an inorganic binder, a refractive index difference between the inorganic binderand the thermally conductive fillerbeing 0.2 or less, a volume ratio of a content of the inorganic binderto a content of the thermally conductive fillerbeing 40:60 to 5:95.