公开(公告)号：US20190203116A1

公开(公告)日：2019-07-04

申请号：US16294651

申请日：2019-03-06

Applicant: GE LIGHTING SOLUTIONS, LLC

Inventor： James Edward MURPHY ,  Anant Achyut SETLUR ,  Florencio GARCIA ,  Robert Joseph LYONS ,  Ashfaqul Islam CHOWDHURY ,  Nagaveni KARKADA ,  Prasanth Kumar NAMMALWAR ,  William Winder BEERS

IPC: C09K11/61 ,  H01L33/50 ,  C08K3/34 ,  C09K11/02

CPC classification number: C09K11/617 ,  C08K3/34 ,  C09K11/025 ,  C09K11/616 ,  H01L33/502 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: A lighting apparatus includes a semiconductor light source in direct contact with a polymer composite comprising a color stable Mn4+ doped phosphor, wherein the lighting apparatus has a color shift of ≤1.5 MacAdam ellipses after operating for at least 2,000 hour at a LED current density greater than 2 A/cm2, a LED wall-plug efficiency greater than 40%, and a board temperature greater than 25° C.