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:
Dec. 04, 2007
Filed:
Jan. 21, 2005
Tetsuhiko Isobe, Kanagawa, JP;
Tetsuhiko Isobe, Kanagawa, JP;
Keio University, Tokyo, JP;
Abstract
The object of the present invention is to provide a phosphor which is excellent in transparency, light transmittance, luminescence efficiency and luminescent intensity and at the same time, processes for producing the phosphor. Preferred embodiments of the invention include a phosphor characterized in that phosphor particles represented by the general formula [(L)(M)(N)O:Y] are covered with an organic compound bearing at least one functional group at a terminal or side chain, wherein L is a metallic element such as Zn; M is a metallic element such as Al; N is Si or Ge; O is oxygen; Y is at least one activating agent such as Mn, Eu, Cuor Yb; and a, b, c and d are each a value satisfying the relationships 0<a≦2, 0≦b≦2, 0≦c≦2 and 2a+3b+4c=2d.