Title:
AMORPHOUS ELECTRON EMITTING MATERIAL STABLE IN AIR AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/156337
Kind Code:
A1
Abstract:
The present invention relates to an electron emitting material and a manufacturing method therefor. More particularly, the present invention relates to an amorphous electron emitting material that is stable in air and allows a large emission current at a low driving voltage thanks to the low work function thereof, and a manufacturing method therefor. The electron emitting material of the present invention exhibits a work function characteristic lower by 30 % or more than the work functions of the commercial electron emitting materials Mo and carbon, which are at a level of around 4.3 eV. Thus, the application of the electron emitting material to FED and fluorescent tubes allows a large emission current at a low driving voltage without structurally changing preexisting devices. In addition, the electron emitting material of the present invention can be manufactured on a mass scale by using simple thermal treatment, melting-solidification, and mechanical grinding processes.
Inventors:
KIM SUNG-WNG (KR)
LEE KYU-HYOUNG (KR)
KANG SE-HWANG (KR)
LEE KYU-HYOUNG (KR)
KANG SE-HWANG (KR)
Application Number:
PCT/KR2018/016083
Publication Date:
August 15, 2019
Filing Date:
December 18, 2018
Export Citation:
Assignee:
RESEARCH & BUSINESS FOUND SUNGKYUNKWAN UNIV (KR)
International Classes:
H01J1/30; C01G27/00
Foreign References:
| KR20170055082A | 2017-05-19 | |||
| JP2004307869A | 2004-11-04 | |||
| KR20110081685A | 2011-07-14 | |||
| KR20110016289A | 2011-02-17 | |||
| KR20110011586A | 2011-02-08 |
Attorney, Agent or Firm:
KIM, In-cheol (KR)
Download PDF:
Previous Patent: FALL PREVENTION PROTECTOR
Next Patent: METHOD FOR ACQUIRING NOISE-REFINED VOICE SIGNAL, AND ELECTRONIC DEVICE FOR PERFORMING SAME
Next Patent: METHOD FOR ACQUIRING NOISE-REFINED VOICE SIGNAL, AND ELECTRONIC DEVICE FOR PERFORMING SAME