Patent ID: 6686686
Filing Date: 2004-02-03
Classification: H01J

Abstract:
A plural-beam tube comprising:a tube envelope having a faceplate and a screen electrode on the faceplate adapted to be biased at a screen potential; a source of at least two beams of electrons directed toward said faceplate, wherein said source is adapted for magnetic deflection of said at least two beams of electrons; phosphorescent material disposed on said faceplate for producing light in response to the at least two beams of electrons impinging thereon; and at least first and second electrostatic electrodes on an interior surface of said tube envelope and defining a non-Z-planar gap therebetween, wherein said first electrode is proximate said source and adapted to be biased at a potential less than the screen potential, and wherein said second electrode is between said first electrode and said screen electrode and is adapted to be biased at the screen potential.