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Amorphic diamond film flat field emission cathode

  • US 5,686,791 A
  • Filed: 06/07/1995
  • Issued: 11/11/1997
  • Est. Priority Date: 03/16/1992
  • Status: Expired due to Term
First Claim
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1. A display device comprising a plurality of cathodes each selectively controllable to form images on a surface of a screen, said cathodes each comprising:

  • a layer of conductive material; and

    a layer of low effective work-function material deposited over said conductive material, said low work-function material having an emission surface comprising a plurality of distributed localized electron emission sites, wherein said emission sites at said emission surface are relatively flat.

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