Title:
【発明の名称】カラー表示装置
Document Type and Number:
Japanese Patent JP2003529193
Kind Code:
A
Abstract:
A color display device comprises an electron gun, a display screen and a color selection electrode as well as a deflection means. The distance between the electron beams is dynamically varied, i.e. the distance between the electron beams in the deflection plane decreases as the beams are deflected in at least one direction. The decrease of the distance enables the distance between the color selection electrode and the display screen to be increased in that direction. As a result, the curvature of the color selection electrode is increased, which has a position effect on the strength, doming and microphonics of the color selection electrode. The distance is dynamically varied by first and second means, the first means being arranged in or near the pre-focusing parts of the electron gun. Said first means comprise magnetic means outside the neck of the CRT for generating dynamically varying magnetic fields, and magnetic field conducting means to conduct the fields to a position near the electron beams.
Inventors:
Albertas ARS Sreutermann
Application Number:
JP2001571442A
Publication Date:
September 30, 2003
Filing Date:
March 14, 2001
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H01J29/48; H01J29/70; H01J29/51; (IPC1-7): H01J29/51; H01J29/48
Attorney, Agent or Firm:
Sugimura Kosaku