公开(公告)号：US20200044119A1

公开(公告)日：2020-02-06

申请号：US16529078

申请日：2019-08-01

Applicant: LUMILEDS LLC

Inventor： Grigoriy BASIN ,  Lex Alan KOSOWSKY ,  Chee Ming THOE ,  Choon Earn CHAN

IPC: H01L33/50 ,  H01L33/60

Abstract: A light emitting device includes an LED having a light emitting top surface and sidewalls. A phosphor structure is attached to the light emitting surface of the LED. The phosphor structure has a light emitting top surface facing away from the LED light emitting surface, and sidewalls. A light reflective material is arranged to cover the sidewalls of the LED and the phosphor structure. A light absorptive region is defined in the light reflective material around a perimeter of the light emitting surface of the phosphor structure. The light absorptive region may be spaced apart from the perimeter of the phosphor structure by a gap. The light absorptive region may be formed by ultraviolet laser illumination of the light reflecting material.

公开(公告)号：US20190198723A1

公开(公告)日：2019-06-27

申请号：US16226313

申请日：2018-12-19

Applicant: Lumileds LLC

Inventor： Grigoriy BASIN ,  Mooi Guan NG ,  Lex Alan KOSOWSKY ,  Phillip BARTON

IPC: H01L33/50 ,  H01L33/56 ,  C09K11/02 ,  H01L33/60

CPC classification number: H01L33/504 ,  C09K11/02 ,  H01L33/501 ,  H01L33/505 ,  H01L33/508 ,  H01L33/56 ,  H01L33/60 ,  H01L2933/0041 ,  H01L2933/005

Abstract: A wavelength converting layer may have a glass or a silicon porous support structure. The wavelength converting layer may also have a cured portion of wavelength converting particles and a binder filling the porous glass or silicon support structure.