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:
Jul. 13, 1999
Filed:
Dec. 27, 1996
Sung P Pack, Tempe, AZ (US);
Patricia A Norton, Mesa, AZ (US);
Robert F Woodburn, Jr, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for protecting extraction electrodes (140) during processing of Spindt-tip field emitters (150, 155) includes the steps of: (i) depositing a parting layer (170) on the extraction electrodes (140) and in an interspace region (145) defined by the extraction electrodes (140), (ii) sharpening the Spindt-tip field emitters (150), (iii) depositing a layer (180) of emission-enhancing material on the sharpened field emitters (155) and on the parting layer (170), and (iv) removing the parting layer (170), thereby lifting off the emission-enhancing material from the extraction electrodes (140) and from the interspace region (145), but not from the sharpened field emitters (155).