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:
Feb. 16, 2021
Filed:
Jun. 22, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Shigeru Aomori, Sakai, JP;
Hideomi Yui, Sakai, JP;
Mutsuko Yamamoto, Sakai, JP;
Hidetsugu Matsukiyo, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A phosphor layer composition, phosphor member, light source device, and projection device are provided that are capable of restraining reflection or scattering at interfaces between phosphor particles and a binder to improve the excitation-light absorption by, and the external quantum efficiency of, the phosphor particles. The present invention, in an aspect thereof, is directed to a phosphor layer composition including: phosphor particlesabsorbing excitation light and emitting prescribed fluorescence; and a bindercomposed of a translucent gel containing a metal alkoxide or a mixture of a metal alkoxide and a metal oxide, wherein the phosphor particlesare dispersed in the binder, and the phosphor particlesand the binderdiffer in refractive index by 0.3 or less.