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:
Oct. 07, 2003
Filed:
Feb. 07, 2001
Albertus Aemilius Seyno Sluyterman, Eindhoven, NL;
Wilhelmus Henrica Cornelis Theuws, Eindhoven, NL;
Tjerk Gerrit Spanjer, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a color display device comprising an in-line electron gun ( ) for generating three electron beams ( ), and a convergence unit ( ′) to dynamically influence the convergence of the electron beams and deflecting means ( ) for deflecting the electron beams ( ). The convergence unit ( ′) comprises a ring-shaped element ( ′), said ring-shaped element comprising two parts, a first part ( ) being positioned closer to the in-line gun ( ) than a second part ( ), and the first and/or the second part having four coils ( ′) for generating a magnetic quadrupole field.