US 2003/0111946 A1 · FED cathode structure using electrophoretic deposition and method of fabrication

Abstract

A method of fabricating a field emission device cathode using electrophoretic deposition of carbon nanotubes in which a separate step of depositing a binder material onto a substrate, is performed prior to carbon nanotube particle deposition. First, a binder layer is deposited on a substrate from a solution containing a binder material. The substrate having the binder material deposited thereon is then transferred into a carbon nanotube suspension bath allowing for coating of the carbon nanotube particles onto the substrate. Thermal processing of the coating transforms the binder layer properties which provides for the adhesion of the carbon nanotube particles to the binder material.

Claims20

Dependent claims

A method of fabricating a cathode comprising the steps of:

providing a substrate;
providing a solvent, having a solute disposed therein, the solvent and solute forming a binder solution;
immersing the substrate into the binder solution;
applying a voltage to the substrate thereby providing for the adhesion of the binder solution to the substrate and forming a layer of binder material on the substrate;
removing the substrate having the layer of binder material formed thereon from the binder solution;
providing a suspension bath characterized as a colloidal solution of an emitting structure;
immersing the substrate having the layer of binder material formed thereon, into the suspension bath;
removing the substrate from the suspension bath;
and
thermal processing of the substrate to form adhesion properties.

7 more elements

Dependencies are inferred from the claim text.

FED cathode structure using electrophoretic deposition and method of fabrication

Life of this patent

FED cathode structure using electrophoretic deposition and method of fabrication

Life of this patent

Abstract

Claims20