Post-deflection acceleration CRT system

Details Post-deflection acceleration CRT system Post-deflection acceleration CRT system

1976-09-23

1979-07-03

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313470, 315376, H01J 2980, H01J 3920

Patent

active

041601874

ABSTRACT:
Improvement is provided in a color cathode ray tube of the post-deflection acceleration type, in the form of an operational system including related tube geometry. An electron barrier, consisting of a metallic film having a defined voltage penetration threshold, is adheringly disposed on the surface of the screen. The potential on the screen is in the order of substantially 20 to 40 kilovolts while the potential of the related color-selection electrode is more than substantially 72 percent and less than 85 percent of the screen potential thereby effecting a definitive voltage differential (.DELTA.V) therebetween that is substantially equal to or less than the voltage penetration threshold of the metallic film. The improvement in the system provides enhanced contrast and color purity in the screen display and minimizes background luminescence of the screen resultant from spurious impingement of secondary electrons generated in the tube.

REFERENCES:
patent: 2303563 (1942-12-01), Law
patent: 2665220 (1954-01-01), De Gier
patent: 2829265 (1958-04-01), Harper
patent: 2879444 (1959-03-01), Nunan
patent: 3278326 (1966-10-01), McGee
patent: 3340421 (1967-09-01), Watanabe et al.
patent: 3475639 (1969-10-01), Driffort et al.
patent: 3586900 (1971-06-01), Seki et al.
patent: 3911165 (1975-10-01), Kanai et al.

Affiliated with

Also associated with

Rating

Post-deflection acceleration CRT system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Post-deflection acceleration CRT system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post-deflection acceleration CRT system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2276328