Title: Electron guns for color picture tube
Application Number: 94119024 Application Date: 1994.12.14
Publication Number: 1119784 Publication Date: 1996.04.03
Approval Pub. Date: 2002.11.20 Granted Pub. Date: 2002.11.20
International Classifi-cation: H01J29/51;H01J29/62
Applicant(s) Name: Goldstar Co., Ltd. Address:
Inventor(s) Name: Sung Gi Ahn
Attorney & Agent: FENG GENGXUAN
Abstract:
    In-line electron guns for color picture tube are suitable for improving the resolution of the color picture tube. In the electron guns, the beam passing openings of first and second accelerating/focusing electrodes are projected or depressed in specified directions, thus to let the focusing actions of the main electrostatic focusing lenses in the vertical direction and in the horizontal direction not only be carried out at different positions but also be differently carried out. Therefore, the electron guns not only reduce the vertical slenderness of the beam spot formed on the center of the screen but also nearly remove the hollow parts of low electron density formed above and below the core part of each beam spot formed on the edge of the screen.
Time: 4