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:
Nov. 23, 2004
Filed:
Apr. 21, 2000
Richard Allan Tuck, Slough, GB;
Peter Graham Adpar Jones, High Wycombe, GB;
Printable Fields Emitters Limited, Hartlepool, GB;
Abstract
A field electron emission cathode is manufactured by depositing on an insulating substrate , by low resolution means, a sequence of a first conducting layer , a field emitting layer and a second conducting layer to form at least one cathode electrode. There is then deposited on the cathode electrode by low resolution means, a sequence of an insulating layer and a third conducting layer , to form at least one gate electrode. The structure thus formed is then coated with a photoresist layer . The photoresist layer is then exposed by high resolution means to form at least one group of emitting cells, the or each such group being located in an area of overlap between a cathode electrode and gate electrode. To complete the cells, the conducting and insulating layers are etched sequentially to expose the field emitting layer in the cells, and remaining areas of the photoresist layer are removed. Thus, field emitting materials and devices can be manufactured using relatively low cost techniques.