Patent ID: 6586870
Filing Date: 2003-07-01
Classification: H01J

Abstract:
A tube comprising:a tube envelope having a faceplate and a screen electrode on the faceplate adapted to be biased at a screen potential, wherein the faceplate has a longer horizontal dimension and a shorter vertical dimension; a source of at least one beam of electrons directed toward said faceplate, wherein said source is adapted for magnetic deflection of said at least one beam of electrons; phosphorescent material disposed on said faceplate for producing light in response to the at least one beam of electrons impinging thereon; and at least first and second magnetic sources each being disposed proximate said tube envelope to produce a respective magnetic field therein, said first and second magnetic sources being disposed oppositely with respect to said source of at least one beam of electrons with said source of at least one beam of electrons between said first and second magnetic sources, the fields of said first and second magnetic sources tending to bend the at least one beam of electrons in a direction away from the center of said faceplate in the longer horizontal dimension thereof.