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Method of stabilizing field emitter

A technology for emitters and stable fields, applied in chemical instruments and methods, manufacture of discharge tubes/lamps, components of discharge tubes/lamps, etc., can solve short life, non-uniform field emitters, low field emissivity, etc. question

Inactive Publication Date: 2005-11-30
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Abnormal operation leads to low field emission rate, short lifetime and non-uniform field emission of field emitters

Method used

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  • Method of stabilizing field emitter
  • Method of stabilizing field emitter
  • Method of stabilizing field emitter

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Embodiment Construction

[0022] The present invention will now be described more fully with reference to the accompanying drawings.

[0023] figure 2 is a schematic diagram of a processing chamber in which plasma processing is performed to stabilize field emitters in accordance with an embodiment of the present invention.

[0024] refer to figure 2 , carbon nanotubes 22 are formed on the cathode 21 and the cathode 21 is placed in the processing chamber 20 . Carbon nanotubes 22 may be grown by selective use of carbon nanotube growth methods, such as direct growth printing with carbon nanotube paste. Since carbon nanotube growth methods are well known, their detailed descriptions are omitted.

[0025] The anode 23 is located in the processing chamber 20, separated from the carbon nanotubes 22 by a predetermined distance. Cathode 21 and anode 23 may be made of any suitable conductive material, such as metal electrodes or oxide electrodes. That is, the materials of the cathode 21 and the anode 23 a...

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Abstract

A method of stabilizing a field emitter includes performing plasma treatment on carbon nanotubes of the field emitter. The plasma treatment evens the surface of the carbon nanotubes, stabilizing the current density of the carbon nanotubes and increasing the durability of the field emitter.

Description

technical field [0001] The present invention relates to a method for stabilizing the current of a field emitter, and more particularly to a method for stabilizing the current of a field emitter, wherein the nanotubes of the carbon nanotube field emitter are treated with plasma to stabilize the current density and improve durability. Background technique [0002] Carbon nanotubes are an allotrope of carbon and are formed in the shape of a hexagonal tube with a large aspect ratio but a very small nanoscale diameter. Since carbon nanotubes are chemically stable metallic or semiconducting, they are promising new materials for various applications such as field emission sources, hydrogen storage media and polymer intensifiers. [0003] Carbon nanotubes can be produced by physical or chemical methods. Physical methods include arc charging, laser evaporation, etc. Chemical methods include chemical vapor deposition (CVD), such as thermal chemical vapor deposition and plasma enhan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/00H01J9/02H01J1/30
CPCH01J2201/30469B82Y10/00H01J9/025C01B32/168B01J19/12B82Y40/00H01J1/304
Inventor 金元锡金起永李常贤许廷娜李玹姃
Owner SAMSUNG SDI CO LTD