Cold Cathode

• US 20040119391A1
• Filed: 12/11/2003
• Published: 06/24/2004
• Est. Priority Date: 10/16/1998
• Status: Active Grant

• Current Assignee: SI Diamond Technology, Inc. (Nano Magic, Inc.)
• Original Assignee: SI Diamond Technology, Inc. (Nano Magic, Inc.)
• Inventors: Yaniv, Zvi, Fink, Richard Lee, Tolt, Zhidan Li
• Granted Patent: US 6,819,035 B2
• Time in Patent Office: Days
• US Class Current: 313/310
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: B82Y 15/00 Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
• CPC Class Codes: H01J 1/304 Field-emissive cathodes
• CPC Class Codes: H01J 2201/30457 Diamond

Abstract

A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Claims

1. A carbon emitter comprising:

a substrate;

a carbon material on the substrate, wherein the carbon material includes at least one emission area having a plurality of grains with interfaces in between.