IP Library › Granted Patent US 11,453,822
Granted Patent B2
US 11,453,822 · App. 16/926,821 · Granted Sep 27, 2022

Lighting device

Inventors: Markus Seibald (Kaufering, DE); Dominik Baumann (Munich, DE); Tim Fiedler (Landsberg, DE); Stefan Lange (Augsburg, DE); Hubert Huppertz (Innsbruck, AT); Daniel Dutzler (Innsbruck, AT); Thorsten Schroeder (Munich, DE); Daniel Bichler (Augsburg, DE); Gudrun Plundrich (Biessenhofen, DE); Simon Peschke (Assling, DE); Gregor Hoerder (Innsbruck, AT); Gina Maya Achrainer (Greifenberg, DE); Klaus Wurst (Zirl, AT)
Assignee: OSRAM OLED GMBH
C09K11/7734C09K11/0883H01L33/502
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Quick Facts
Patent No.
US 11,453,822
App. No.
16/926,821
Granted
Sep 27, 2022
Kind
B2
Abstract

A lighting device is specified. The lighting device comprises a phosphor having the general molecular formula (MA) a (MB) b (MC) c (MD) d (TA) e (TB) f (TC) g (TD) h (TE) i (TF) j (XA) k (XB) l (XC) m (XD) n :E. In this case, MA is selected from a group of monovalent metals, MB is selected from a group of divalent metals, MC is selected from a group of trivalent metals, MD is selected from a group of tetravalent metals, TA is selected from a group of monovalent metals, TB is selected from a group of divalent metals, TC is selected from a group of trivalent metals, TD is selected from a group of tetravalent metals, TE is selected from a group of pentavalent elements, TF is selected from a group of hexavalent elements, XA is selected from a group of elements which comprises halogens, XB is selected from a group of elements which comprises O, S and combinations thereof, XC=N and XD=C and E=Eu, Ce, Yb and/or Mn. The following furthermore hold true: a+b+c+d=t; e+f+g+h+i+j=u; k+l+m+n=v; a+2b+3c+4d+e+2f+3g+4h+5i+6j−k−2l−3m−4n=w; 0.8≤t≤1; −3.5≤u≤4; 3.5≤v≤4; (−0.2) w≤0.2 and 0≤m<0.875 v and/or v≥l>0.125 v.

Claims (10)

1. A lighting device comprising: a phosphor having the general molecular formula SrLi 3-2x** Al 1+2x** O 4-4x** N 4x** :Eu where 0≤x**≤0.875.

2. The lighting device according to claim 1 , wherein x**=0.

3. The lighting device according to claim 1 , wherein the lighting device is a conversion light-emitting diode and further comprises:

a primary radiation source configured to emit an electromagnetic primary radiation; and

a conversion element comprising the phosphor, wherein the conversion element is arranged in the beam path of the electromagnetic primary radiation; wherein the phosphor is at least partially configured to convert the electromagnetic primary radiation into an electromagnetic secondary radiation.

4. The lighting device according to claim 3 , wherein the emitted electromagnetic primary radiation comprises a wavelength ranging from near UV range to blue range of the electromagnetic spectrum.

5. The lighting device according to claim 3 , wherein the conversion element comprises a matrix material, and wherein the phosphor is distributed in the matrix material.

6. The lighting device as claimed in claim 3 , wherein the primary radiation source is a layer sequence comprising an active layer configured to emit the electromagnetic primary radiation.

7. The lighting device as claimed in claim 1 , wherein 0≤x**≤0.5.

8. The lighting device as claimed in claim 1 , wherein 0≤x**≤0.45.

Priority Claims (2)
DE 10 2016 114 996.9 · Aug 12, 2016 · national
DE 10 2016 121 694.1 · Nov 11, 2016 · national
Continuity (3)
Continuation 16202188 · Nov 28, 2018
Division 16302724
Related Publication 20210002549A1 · Jan 7, 2021
Cited By (1)
US 12,256,579