US 6,798,127 B2 · Enhanced field emission from carbon nanotubes mixed with particles

Abstract

The present invention is directed toward cathodes and cathode materials comprising carbon nanotubes (CNTs) and particles. The present invention is also directed toward field emission devices comprising a cathode of the present invention, as well as methods for making these cathodes. In some embodiments, the cathode of the present invention is used in a field emission display. The invention also comprises a method of depositing a layer of CNTs and particles onto a substrate to form a cathode of the present invention, as well as a method of controlling the density of CNTs used in this mixed layer in an effort to optimize the field emission properties of the resulting layer for field emission display applications.

Claims13

Dependent claims

A field emission cathode comprising:

a) a substrate;
and
b) a field emission cathode material comprising a mixture of carbon nanotubes and particles.

Dependencies are inferred from the claim text.

Facts

Application

10/680,941Filed 7 Oct 2003 · us provisional application

Priority

9 Oct 2002

Published

US 2004/0070326 A115 Apr 2004

Granted

28 Sep 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01J 1/304
Cold cathodes, e.g. field-emissive cathode: field-emissive cathodes
C23C 18/1204
Characterised by the deposition of inorganic material other than metallic material: inorganic material, e.g. non-oxide and non-metallic such as…
C23C 18/127
Involving particles, e.g. carbon nanotubes [CNT], flakes: preformed particles
H01J 9/025
Of cold cathodes: of field emission cathodes

Enhanced field emission from carbon nanotubes mixed with particles

Life of this patent

Enhanced field emission from carbon nanotubes mixed with particles

Life of this patent

Abstract

Claims13