E.i. Dupont De Nemours and Company

Robert Joseph Bouchard

Lap-Tak Andrew Cheng

David Herbert Roach

Daniel Irwin Amey, Jr

John Gerard Lavin

Syed Ismat Ullah Shah

Lothar H Brixner

Kenneth Warren Hang

Michael John Popowich

Lap-Tap Andrew Cheng

John Gerald Lavin

Donald Burl Rogers

David Herbert Roadh

This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.

Process for improving the emission of electron field emitters

This invention provides a dielectric composition comprising a dielectric which is fireable in air at a temperature in the range of about 450&#xb0; C. to about 550&#xb0; C. and a conductive oxide selected from the group consisting of antimony-doped tin oxide, tin-doped indium oxide, a transition metal oxide which has mixed valence states or will form mixed valence states after firing in a nitrogen atmosphere at a temperature in the range of about 450&#xb0; C. to about 550&#xb0; C. and normally conducting precious metal oxides such as ruthenium dioxide, wherein the amount of conductive oxide present is from about 0.25 wt % to about 25 wt % of the total weight of dielectric and conductive oxide. This dielectric composition has reduced electrical resistance and is useful in electron field emission devices to eliminate charging of the dielectric in the vicinity of the electron emitter and the effect of static charge induced field emission.

Dielectric composition with reduced resistance

Patterned ion-bombarded graphite electron emitters are disclosed as well as processes for producing them. The electron emitters are produced by forming a layer of composite of graphite particles and glass on a substrate then bombarding the composite with an ion beam. The electron emitters are useful in field emitter cathode assemblies which are fabricated into flat panel displays.

Ion-bombarded graphite electron emitters

Patterned graphite electron emitters are disclosed. These field emitters find particular usefulness in field emitter cathodes and display panels. These graphite field emitters can be formed by screen printing a paste comprised of graphite and electrically insulating material (glass frit) in the desired patterned paste and bombarding the fire product with an ion beam.

Ion bombarded graphite electron emitters

Wire-coated graphite electron emitters are disclosed. These field emitters find particular usefulness in field emitter cathodes, display panels and lighting devices. These graphite field emitters can be formed by coating a paste comprised of graphite and glass frit onto the wire, firing the paste and bombarding the fired product with an ion beam.

Coated-wire ion bombarded graphite electron emitters

Patterned ion-bombarded carbon electron emitters and the processes for producing them. The electron emitters are produced by forming a layer of composite of carbon particles and glass on a substrate then bombarding the composite with an ion beam. The electron emitters are useful in field emitter cathode assemblies which are fabricated into flat panel displays.

Past-deposited carbon electron emitters

Multilayer capacitors of good electrical properties can be made by firing, in air at low temperatures, certain modified lead titanate dielectric compositions. The dielectric compositions have the formula

Multilayer ceramic capacitors

Process for making multilayer capacitors

Finely divided dielectric powder compositions having the formula (Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.a (PbMg.sub.0.5 W.sub.0.5 O.sub.3).sub.b wherein

Dielectric powder compositions

Powder compositions comprising finely divided solid solutions of certain pyrochlore-related oxides and glass powder, and thermistors thereof, useful in the electronics art.

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Wilmington, DE, United States of America

Robert Joseph Bouchard