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:
Sep. 22, 2009
Filed:
Feb. 06, 2004
Mervyn John Rose, Perthshire, GB;
Ravi Silva, Camberley, GB;
John Shannon, Surrey, GB;
The University Court of the University of Dundee, Dundee, GB;
Abstract
A field emission backplate formed by laser crystallizing of an area of amorphous semiconductor based material. Emitter sites result from the rough surface texture caused by the crystallization process. The crystallization may be localized using laser interferometry, and profiled emitter tips grown on the localized crystalline areas. Such backplates can be used in field emission devices emitting into either a vacuum or a wide band gap light-emitting polymer. Furthermore, a backplate having self-aligned gates can be formed by depositing an insulator layer and a metal layer over the emitter tips, removing the top of the metal layer and etching away the insulator, leaving each tip surrounded by a metal rim. A planarizing agent can be used to refine this process.