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:
Aug. 05, 2014
Filed:
Sep. 29, 2011
Haisong Wang, Beijing, CN;
Peng Bao, Beijing, CN;
Haisong Wang, Beijing, CN;
Peng Bao, Beijing, CN;
Beijing Yuji Science and Technology Co. Ltd, Beijing, CN;
Abstract
A nitrogen compound luminescent material belongs to the field of LED inorganic luminescent materials. The nitrogen compound luminescent material has a chemical formula: MEuAlSiCN. In the formula, M represents one or several of Li, Mg, Ca, Sr and Ba; 0<x≦0.2, 0<y≦0.5; and C represents the element Carbon. The luminescent material can be excited by ultraviolet, near ultraviolet or blue excitation light source such as LED, and emits red light with wavelength between 500-800nm, especially the maximum emission wavelength between 600-700 nm, exhibiting a wider excitation spectrum range, efficiency and stability. The corresponding method of the preparation is simple, easy to mass production and pollution-free. By using the luminescence material, and with ultraviolet, near ultraviolet or blue LED and other luminescent materials such as green fluorescent powder, a white LED light source can be provided.