Patent ID: 6211628
Filing Date: 2001-04-03
Classification: H01J

Abstract:
A system for controlling an electron beam in a cathode ray tube comprising:a funnel with a pair of opposing ends, an inner surface, and an outer surface;a faceplate secured to one of the opposing ends of the funnel, the faceplate having inner and outer surfaces;an electron gun generating an electron beam in the cathode ray tube;a deflection drive deflecting the electron beam in a desired direction towards the faceplate in the cathode ray tube;a pair of electrodes formed on the inner surface of the faceplate, each of the electrodes generating a position signal;an electron beam controller adjusting the deflection of the electron beam in response to the position signals; andat least one capacitor coupling the position signals to the electron beam controller, the at least one capacitor comprising a first inner capacitor plate on at least a portion of the inner surface of the funnel for the cathode ray tube and a first outer capacitor plate on at least a portion of the outer surface of the funnel for the cathode ray tube substantially opposite the first inner capacitor plate.