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. 11, 2017
Filed:
Apr. 25, 2014
Nichia Corporation, Tokushima, JP;
Takashi Kaide, Anan, JP;
Shoji Hosokawa, Tokushima, JP;
NICHIA CORPORATION, Anan-Shi, JP;
Abstract
A phosphor is provided which is represented by the general formula MCeSiBN. M is at least one element selected from the group consisting of La, Y, Tb and Lu. And w, x, y, and z satisfy 2.0<w<4.0, 2.0<x<3.5, 0<y<1.0, and 0<z<2.0, respectively. The phosphor can be efficiently excited by light in a range from near-ultraviolet to blue light, and emit light having components that widely extend mainly from green range to yellow range. A light-emitting apparatus includes the phosphor together with a light-emitting device that emits light in a range from near-ultraviolet to blue light, and can have improved light emission efficiency, good color rendering property, and good color reproduction range. In the case where a light-emitting apparatus includes an additional phosphor, it is possible to further improve its light emission spectrum.