Combination of display tube and deflection unit comprising line

Details Combination of display tube and deflection unit comprising line Combination of display tube and deflection unit comprising line

1993-03-24

1995-05-23

Brinich, Stephen

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

335212, 335213, H01J 2976

Patent

active

054184223

ABSTRACT:
A display tube has an electromagnetic deflection unit with line deflection coils of the semi-saddle type which are provided at their gun-sided ends with an extension having one single, wedge-shaped window directed towards the gun. Particularly line coma errors and raster errors, which occur in display tubes having display screens of small curvature and/or in the case of extreme long axis: short axis ratios, can be minimized with such line deflection coils.

REFERENCES:
patent: 4431940 (1984-02-01), Habraken et al.
patent: 4464643 (1984-08-01), Meershoek
patent: 4524340 (1985-06-01), Sluyterman
patent: 4987398 (1991-01-01), Bessho
patent: 5166576 (1992-11-01), Roussel et al.

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