Title:
COLD CATHODE COMPRISING GRAPHENE FILM, AND ELECTRON GUN USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/130642
Kind Code:
A1
Abstract:
The present invention relates to a cold cathode comprising a graphene film, and an electron gun using same. More particularly, the present invention relates to a cold cathode comprising a graphene film and an electron gun using same, which can be used in vacuum electronic devices having a range of millimeter and sub millimeter frequencies. The present invention provides a cold cathode comprising a graphene film and capable of stably emitting electrons having a high current density, and an electron gun comprising same. Specifically, a cold cathode including a thin graphene film having a high aspect ratio can maintain a high current density and current.
Inventors:
PARK GUN SIK (KR)
SATTOROV MATLABJON (KR)
HONG DONG PYO (KR)
SATTOROV MATLABJON (KR)
HONG DONG PYO (KR)
Application Number:
PCT/KR2019/018029
Publication Date:
June 25, 2020
Filing Date:
December 18, 2019
Export Citation:
Assignee:
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
H01J37/065; H01J37/073
Foreign References:
| KR20150026365A | 2015-03-11 | |||
| KR20110101352A | 2011-09-16 | |||
| KR20110084627A | 2011-07-26 | |||
| JP2005203233A | 2005-07-28 | |||
| US20160118214A1 | 2016-04-28 |
Attorney, Agent or Firm:
SEO, Sang Duck et al. (KR)
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