公开(公告)号：US20240067877A1

公开(公告)日：2024-02-29

申请号：US18502113

申请日：2023-11-06

Applicant: OSRAM OLED GmbH

Inventor： Markus SEIBALD ,  Simon PESCHKE ,  Gregor HOERDER ,  Gina Maya ACHRAINER ,  Klaus WURST ,  Dominik BAUMANN ,  Tim FIEDLER ,  Stefan LANGE ,  Hubert HUPPERTZ ,  Daniel DUTZLER ,  Thorsten SCHROEDER ,  Daniel BICHLER ,  Gudrun PLUNDRICH

IPC: C09K11/77 ,  C09K11/08 ,  H01L33/50

CPC classification number: C09K11/7734 ,  C09K11/0883 ,  H01L33/502

Abstract: A lighting device includes 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(X D)n:E. 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.

公开(公告)号：US20200245428A1

公开(公告)日：2020-07-30

申请号：US16637282

申请日：2018-02-12

Applicant: OSRAM OLED GmbH

Inventor： Dominik BAUMANN ,  Stefan LANGE

IPC: H05B45/24 ,  H01L33/50 ,  C09K11/77 ,  C09K11/08 ,  C09K11/59

Abstract: A dimmable light source for emitting white overall radiation may include a dimmer and a light-emitting diode. The dimmer may vary a current intensity of a current for operating the light-emitting diode during the operation of the light source. The LED may include a semiconductor layer sequence to emit primary radiation, and the LED may further include a conversion element configured to at least partially convert the primary radiation into secondary radiation having a first emission band with a first emission maximum ranging from 400 nm to 500 nm and a second emission band with a second emission maximum ranging from 510 nm to 700 nm. A relative intensity of the first emission band may reduce with decreasing current intensity of the current for operating the LED, and a relative intensity of the second emission band may increase with decreasing current intensity of the current for operating the LED.