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:
Apr. 22, 2014
Filed:
May. 04, 2010
Chung Hoon Lee, Ansan-si, KR;
Walter Tews, Greifswald, DE;
Gundula Roth, Levenhagen, DE;
Detlef Starick, Greifswald, DE;
Chung Hoon Lee, Ansan-si, KR;
Walter Tews, Greifswald, DE;
Gundula Roth, Levenhagen, DE;
Detlef Starick, Greifswald, DE;
Seoul Semiconductor Co., Ltd., Seoul, KR;
LITEC-LP GmbH, Greifswald, DE;
Abstract
Exemplary embodiments of the present invention disclose inorganic luminescent substances with Eu-doped silicate luminophores, in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Euactivation leading to the luminescence. These luminophores are described by the general formula (1-x) MSiO.xSESiO:Eu, in which Mpreferably represents strontium ion or another alkaline earth metal ion, or another divalent metal ion selected from the group consisting of the magnesium, calcium, barium, copper, zinc, and manganese. These ions may be used in addition to strontium and also as mixtures with one another.