POLYCRYSTALLINE PHOSPHOR FILM, PREPARATION METHOD THEREFOR, AND VEHICLE LAMP DEVICE USING SAME

Title:

POLYCRYSTALLINE PHOSPHOR FILM, PREPARATION METHOD THEREFOR, AND VEHICLE LAMP DEVICE USING SAME

Document Type and Number:

WIPO Patent Application WO/2018/101542

Kind Code:

A1

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.

Inventors:

KANG DONGWON (KR)
KIM SOONGIL (KR)
KIM HONGJUNG (KR)
HONG GUNYOUNG (KR)

Application Number:

PCT/KR2017/001936

Publication Date:

June 07, 2018

Filing Date:

February 22, 2017

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)

International Classes:

G02B5/22; C09K11/77

Foreign References:

US20150069299A1	2015-03-12
JP2016197523A	2016-11-24
KR20100102603A	2010-09-24
JP2016060859A	2016-04-25
KR20150103637A	2015-09-11

Other References: