Method of preparing electron emission source and electron emission source
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United States of America Patent
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Issued Date -
Sep 26, 2002
app pub date -
May 6, 2002
filing date -
Mar 23, 1999
priority date (Note) -
Abandoned
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Abstract
A method of preparing an electron emission source having excellent electron emission characteristics which is easily produced and an electron emission source are provided. Chamber 101 is brought to He atmosphere of 1 Pa pressure, arc current of DC 100 A is allowed to flow to perform arc discharge for one second, cathode 102 is heated locally, cathode materials constituting cathode 102 are scattered and carbon particles on the surface of which a lot of carbon nano-tube is formed are produced. The aforementioned carbon particles are collected to use as an emitter of an electron emission source.
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