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. 18, 2004
Filed:
Sep. 10, 2002
Ludovic Peter Willem Huysmans, Eindhoven, NL;
Wilhelmus Marinus Maria Van De Steen, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
In color display tubes ( ) the color purity performance is of the utmost importance. One of the factors adversely affecting this color purity performance is the microphony behavior of the shadow mask ( ). Vibrations or shocks coming from outside the color display tube ( ) can be transferred to the shadow mask ( ) via the suspension means ( ) of the color selection electrode ( ). By introducing a vibration damping element ( ) coupled to the resilient element ( ) of the suspension means ( ), the amount of spot shift on the screen ( ) due to these vibrations is reduced by at least 50%. The vibration damping element ( ) is preferably a flat plate which is rigidly coupled with one side to the suspension means ( ), while the other side is in close contact with the resilient element ( ), as a result of which it is capable of absorbing said vibrations.