US Patent 7868531 Carbon nanotube arrays for field electron emission

Patent 7868531 was granted and assigned to Brother International Corporation on January, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

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Brother International Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7868531

Patent Inventor Names

Kangning Liang0

Date of Patent

January 11, 2011

Patent Application Number

11381982

Date Filed

May 5, 2006

Patent Primary Examiner

Thao X Le

Patent abstract

A method for preparation of carbon nanotubes (CNTs) bundles for use in field emission devices (FEDs) includes forming a plurality of carbon nanotubes on a substrate, contacting the carbon nanotubes with a polymer composition comprising a polymer and a solvent, and removing at least a portion of the solvent so as to form a solid composition from the carbon nanotubes and the polymer to form a carbon nanotube bundle having a base with a periphery, and an elevated central region where, along the periphery of the base, the carbon nanotubes slope toward the central region.