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:
Dec. 26, 1989
Filed:
Sep. 27, 1988
Jan Bijma, Eindhoven, NL;
Antonius J Van Den Beld, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A color display tube having an electron gun system for producing three in-line electron beams. The system includes, in the direction of travel of the beams, a first electrode, a second electrode and a plurality of focusing electrodes, each having apertures for passing the beams. The second electrode includes two spaced-apart plate-shaped members, each having a central and two outer apertures for passing the beams. The apertures in the members for each outer beam are laterally shifted with respect to each other and with respect to a corresponding aperture in the first electrode to direct the outer beams toward convergence with the inner beam.