公开(公告)号：US11056618B2

公开(公告)日：2021-07-06

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：US12100786B2

公开(公告)日：2024-09-24

申请号：US17341743

申请日：2021-06-08

Applicant: LUMILEDS LLC

Inventor： Grigoriy Basin ,  Lex Alan Kosowsky ,  Chee Ming Thoe ,  Choon Earn Chan

IPC: H01L33/50 ,  H01L33/60

CPC classification number: H01L33/501 ,  H01L33/505 ,  H01L33/60 ,  H01L2933/0041 ,  H01L2933/0058

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：US11973168B2

公开(公告)日：2024-04-30

申请号：US18122520

申请日：2023-03-16

Applicant: LUMILEDS LLC

Inventor： Grigoriy Basin ,  Mooi Guan Ng ,  Lex Alan Kosowsky ,  Phillip Barton

IPC: H01L33/50 ,  C09K11/02 ,  H01L27/15 ,  H01L33/34 ,  H01L33/56 ,  H01L33/60

CPC classification number: H01L33/504 ,  C09K11/02 ,  H01L27/156 ,  H01L33/346 ,  H01L33/501 ,  H01L33/502 ,  H01L33/505 ,  H01L33/56 ,  H01L33/60 ,  H01L33/508 ,  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 laminated onto the porous glass or silicon support structure.

公开(公告)号：US11637225B2

公开(公告)日：2023-04-25

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

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.

公开(公告)号：US11183616B2

公开(公告)日：2021-11-23

申请号：US16142247

申请日：2018-09-26

Applicant: Lumileds LLC

Inventor： Grigoriy Basin ,  Lex Alan Kosowsky ,  Hideo Kageyama

IPC: H01L33/00 ,  H01L33/50 ,  H01L33/46

Abstract: Light emitting devices (LEDs) and methods of manufacturing LEDs are described. A method includes providing a layer of a wavelength converting material on a temporary tape. The wavelength converting material includes at least a binder or matrix material, particles of a non-luminescent material, and phosphor particles and has a concentration of 60%-90% by volume particles of the non-luminescent material and phosphor particles. The layer of the wavelength converting material is separated on the temporary tape to form multiple wavelength converting structures, which are provided on an array type frame. Heat and pressure are applied to the wavelength converting structures on the array type frame.