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:
Jul. 16, 2019
Filed:
Jan. 31, 2017
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Youshin Lee, Osaka, JP;
Shozo Oshio, Osaka, JP;
Tatsuya Okuno, Osaka, JP;
Takeshi Abe, Osaka, JP;
Masahiro Nakamura, Osaka, JP;
Abstract
A light emitting deviceincludes: a substrate; and a phosphor layercomposed in such a manner that a large number of phosphor particlesare adhered onto a flat surfaceof the substrate. At least one of the phosphor particlesis a polyhedral phosphor particlethat is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size Dof the polyhedral phosphor particleis 30 μm or more and a maximum thickness of the phosphor layeror less. It is preferable that at least one of the phosphor particlesadhered onto the flat surfaceof the substrateis the polyhedral phosphor particlethat is monodispersed, is derived from the crystal structure of the garnet, and has the facets.