Title:
【発明の名称】4極集中コイルを有するカラー表示装置
Document Type and Number:
Japanese Patent JP2003502819
Kind Code:
A
Abstract:
The invention relates to a color display device comprising an in-line electron gun (5) for generating three electron beams (6,7,8), and a convergence unit (14) to dynamically influence the convergence of the electron beams, preferably to decrease a distance (p) between the electron beams. The convergence unit (14) comprises a ring-shaped element (21) having four coils (22) and a longitudinal axis (24). A cross-section of the ring-shaped element (21) with a plane perpendicular to the longitudinal axis (24) is a circle with the longitudinal axis as its center and the ring-shaped element (21) forming the circumference. Each coil extends over the circumference over an angle phi having a value between 50° and 75°.
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Inventors:
Albertas Ath Slitelmann
Nicolas Hae Fink
Thierk Hespaniel
Leopold SE M Vilance
Nicolas Hae Fink
Thierk Hespaniel
Leopold SE M Vilance
Application Number:
JP2001505034A
Publication Date:
January 21, 2003
Filing Date:
June 15, 2000
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H01J29/51; H01J29/70; (IPC1-7): H01J29/51
Attorney, Agent or Firm:
Sugimura Kosaku (1 person outside)