The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2004
Filed:
May. 31, 2000
Richard Allan Tuck, Slough, GB;
Hugh Edward Bishop, Abingdon, GB;
Printable Field Emitters Limited, Chilton, GB;
Abstract
A field electron emission material is formed by coating a substrate ( ) having an electrically conductive surface with a plurality of electrically conductive particles ( ). Each particle has a layer of electrically insulating material ( ) disposed either in a first location between the conductive surface of the substrate ( ) and the particle ( ), or in a second location between the particle ( ) and the environment ( ) in which the field electron emission material is disposed, but not in both of such first and second locations, so that at least some of the particles ( ) form electron emission sites at such first or second locations. A number of field emission devices are disclosed, utilizing such electron emission material.