Title:
METHOD FOR SEPARATING AND PURIFYING ORGANIC LIGHT EMITTING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2014/204046
Kind Code:
A1
Abstract:
The present invention provides a method for separating and purifying an organic light emitting material, capable of obtaining an organic light emitting material having a purity of 99.95% or higher at a high yield rate, by recovering a waste organic light emitting material after carrying out a vacuum deposition process on an organic light emitting layer in a process of manufacturing an organic light emitting diode display and preliminarily purifying the recovered material with a purity of 98% or higher, adsorbing and removing impurities from the preliminarily purified organic light emitting material having a purity of 98% or higher through an adsorption reaction using active carbon, and performing a crystallization process and a sublimation purification after adsorbing and removing the impurities. Thus, since the present invention enables expensive organic light emitting material to be recovered and purified with a high purity, quality can be stably maintained and a recovery rate can be improved.
Inventors:
SHIN SANG KYU (KR)
KIM KWANG SIK (KR)
KIM KWANG SIK (KR)
Application Number:
PCT/KR2013/007272
Publication Date:
December 24, 2014
Filing Date:
August 13, 2013
Export Citation:
Assignee:
SHIN SUNG MATERIALS CO LTD (KR)
SHIN SANG KYU (KR)
SHIN SANG KYU (KR)
International Classes:
H01L51/56; B01D9/02
Foreign References:
| KR20010088412A | 2001-09-26 | |||
| KR101268916B1 | 2013-05-29 | |||
| JP2012216783A | 2012-11-08 |
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (KR)
특허법인 세원 (KR)
특허법인 세원 (KR)
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