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:
Jan. 12, 2016
Filed:
Aug. 11, 2010
Frank Baumann, Regensburg, DE;
Norbert Boenisch, München, DE;
Tim Fiedler, München, DE;
Frank Jermann, Königsbrunn, DE;
Stefan Lange, Augsburg, DE;
Reiner Windisch, Pettendorf, DE;
Frank Baumann, Regensburg, DE;
Norbert Boenisch, München, DE;
Tim Fiedler, München, DE;
Frank Jermann, Königsbrunn, DE;
Stefan Lange, Augsburg, DE;
Reiner Windisch, Pettendorf, DE;
OSRAM Opto Semiconductors GmbH, Regensburg, DE;
Abstract
A conversion LED comprising a chip which emits primary radiation and a luminescent substance-containing layer which is on the chip or positioned so that it intercepts the primary radiation emitted from the chip and which converts at least some of the primary radiation of the chip into secondary radiation, wherein a first luminescent substance of the ABO:Ce garnet type which emits yellow green and a second luminescent substance of the MAlSiN:Eu calsine type which emits orange red is used, wherein the peak wavelength of the primary radiation lies in the 435 to 455 nm range, the first luminescent substance being a garnet having essentially the cation A=75 to 100% Lu, remainder Y and a Ce content of 1.5 to 2.9%, where B=10 to 40% Ga, remainder Al, while the second luminescent substance is of the basic MAlSiN:Eu type where M is Ca alone or at least 80%, in particular at least 90%, preferably at least 95% Ca and the remainder of M may be Sr, Ba, Mg, Li or Cu, in each case alone or in combination, wherein some of the Al up to 20%, preferably at most 5%, can be replaced by B, and wherein N can be partially replaced by O, F, Cl, alone or in combination.