High resolution color picture tube having a small diameter neck

Details High resolution color picture tube having a small diameter neck High resolution color picture tube having a small diameter neck

1997-12-22

2000-03-28

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313426, H01J 2976

Patent

active

060435984

ABSTRACT:
A color picture tube having an in-line electron gun includes a front panel, a funnel sealed to the rear of the panel, a neck connected to the rear of the funnel and provided with an internal in line electron gun and a plurality of electrodes for focusing and accelerating electron beams emitted from the electron gun, and a deflection yoke mounted around the funnel to scan the electron beams across the screen of the panel. An outer diameter NO of the neck is defined by 22.5 mm<NO.ltoreq.24.0 mm and the relationship between the distance P between centers of neighboring beam-guide holes of the electrodes and the outer diameter NO of the neck is defined by 4.1<NO/P<5.4.

REFERENCES:
patent: 5710480 (1998-01-01), Uchida et al.

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