公开(公告)号：US20230043329A1

公开(公告)日：2023-02-09

申请号：US17792824

申请日：2020-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Bokyung KANG ,  Gunyoung HONG ,  Younggil YOO ,  Minsung KIM ,  Kyungpil KIM

IPC: F21K9/64 ,  H01L33/50 ,  C09K11/59

Abstract: Alighting apparatus can include a light emitting element that can irradiate light, and an optical conversion layer disposed on the light emitting element for converting the irradiated light. The optical conversion layer can include crystal grains of a first phosphor and crystal grains of a second phosphor, and the crystal grains of the first phosphor and the crystal grains of the second phosphor can be in mixed form in the optical conversion layer.

公开(公告)号：US20190284472A1

公开(公告)日：2019-09-19

申请号：US16465979

申请日：2017-02-22

Applicant: LG ELECTRONICS INC.

Inventor： Dongwon KANG ,  Soongil KIM ,  Hongjung KIM ,  Gunyoung HONG

IPC: C09K11/77 ,  F21S41/176

Abstract: Provided are a polycrystalline phosphor film applicable to a high-power optical device, a preparation method therefor, and a vehicle lamp device using the same, wherein the polycrystalline phosphor film comprises a plurality of phosphor crystals and pores formed between the phosphor crystals, and the phosphor crystal can be a synthesized product comprising at least one rare earth material and cerium (Ce). In addition, the method for preparing a polycrystalline phosphor film can comprise the steps of: preparing a phosphor powder comprising a plurality of phosphor particles; injecting the phosphor powder into a predetermined mold so as to mold the same into a predetermined shape; generating a sintered body by primarily sintering, at a first temperature, the phosphor powder having the predetermined shape; secondarily sintering the sintered body, having been primarily sintered, at a second temperature lower than the first temperature; and forming a polycrystalline phosphor film by processing the sintered body having been secondarily sintered.