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. 04, 1995
Filed:
Jul. 16, 1993
Applicant:
Inventors:
Robert C Kane, Woodstock, IL (US);
Norman W Parker, Wheaton, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313309 ; 313336 ; 313422 ;
Abstract
A FED including an integrally formed electrostatic lens with an aperture having a diameter which is dis-similar from an aperture of the FED gate to effect a reduction in electron beam cross-section. By forming the FED with an electrostatic lens aperture of increased diameter relative to the diameter of the gate aperture a reduced sensitivity with respect to lens thickness and location is realized as is a relaxation of electrostatic lens fabrication constraints. Image display devices employing such integrally formed electrostatic lens systems may be provided wherein pixel cross-sections as small as two microns are realized.