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. 20, 2003
Filed:
Sep. 07, 1999
Johann T. Trujillo, Mesa, AZ (US);
Chenggang Xie, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A field emission device ( ) includes a cathode plate ( ) having a back plate ( ) made from glass and an anode plate ( ) having a transparent substrate ( ) also made from glass. A first charge control electrode ( ) is affixed to a distal surface ( ) of back plate ( ), and a second charge control electrode ( ) is affixed t0 the periphery of transparent substrate ( ). A ballast resistor ( ) is disposed on a proximate surface ( ) of back plate ( ). A method for operating told omission device ( ) includes the stop of controlling a potential applied to first charge control electrode ( ) in a manner sufficient to control the conductivity of ballast resistor ( ) and provide an electron current ( ) that is constant. The method further includes the step of controlling a potential applied to second charge control electrode ( ) in a manner sufficient to prevent arcing due to wild up or charge within transparent substrate ( ).