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:
Mar. 13, 2001
Filed:
Aug. 28, 1997
Christopher J. Spindt, Menlo Park, CA (US);
Stephanie J. Oberg, Sunnyvale, CA (US);
Duane A. Haven, Umpqua, OR (US);
Roger W. Barton, Palo Alto, CA (US);
Arthur J. Learn, Cupertino, CA (US);
Victoria A. Bascom, Newman, CA (US);
Candescent Technologies Corporation, San Jose, CA (US);
Abstract
An electron-emitting device contains an emitter electrode (12), a group of sets of electron-emitting elements (,), a group of control electrodes (,), and a focusing system (,) for focusing electrons emitted by the electron-emissive elements. The sets of electron-emissive elements are arranged generally in a line extending in a specified direction. Each control electrode has a main portion (,) and a gate portion (,). the electron-emissive elements are exposed through gate openings (,) in the gate portion. The main portion of each control electrode crosses over the emitter electrode and has a large control opening (,) which laterally circumscribes one of the sets of electron-emissive elements. The focusing system has a group of focus openings (,) located respectively above the control openings. Each control opening is largely centered on, or/and is no more than 50% as large as, the corresponding focus opening in the specified direction.