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:
Nov. 23, 2010
Filed:
May. 26, 2006
Applicants:
Takeshi Takahara, Suginami-ku, JP;
Yasushi Aoki, Tokyo, JP;
Takashi Murase, Tokyo, JP;
Inventors:
Assignee:
Nemoto & Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/61 (2006.01);
U.S. Cl.
CPC ...
Abstract
A green-light-emitting phosphor of a high emission brightness when excited by blue light emitted from a blue LED is provided. The green-light-emitting phosphor is represented by a formula MSiOXN:Eu, wherein M is at least one element of strontium (Sr), barium (Ba) and calcium (Ca); X is at least one element of chlorine (Cl) and bromine (Br); a is 0.005≦a≦0.15 and n is 0.02≦n≦0.2. Substitution of a part of the oxygen (O) in a matrix with at least one halogen element of chlorine (Cl) and bromine (Br) gives a green-light-emitting phosphor of higher brightness.