Cathode ray tube having improved shadow mask

Details Cathode ray tube having improved shadow mask Cathode ray tube having improved shadow mask

1976-10-04

1979-01-23

Segall, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907

Patent

active

041363000

ABSTRACT:
A cathode-ray tube of the vertical line screen, slit apertures mask type includes a mask wherein the horizontal curvature of the mask is made greater than that suggested by the prior art for similar type tubes. Because of the added curvature, the degree of electron beam misregister caused by mask doming is reduced. To obtain acceptable packing of the screen lines, the horizontal center-to-center spacing between adjacent apertures in the mask are varied in relation to the difference in mask-to-screen spacing with respect to the prior art. The additional mask curvature need not necessarily be in a single arch but also may take the form of parallel extending corrugations in the mask.

REFERENCES:
patent: 2745978 (1956-05-01), Van Ormer
patent: 2937297 (1960-05-01), Burdick
patent: 2947899 (1960-08-01), Kaplan
patent: 3109117 (1963-10-01), Kaplan
patent: 3226229 (1965-12-01), Kaplan
patent: 3282691 (1966-11-01), Morrell et al.
patent: 3435268 (1969-03-01), Rublack
patent: 3590303 (1971-06-01), Coleclough
patent: 3721853 (1973-03-01), Naruse et al.
patent: 3889145 (1975-06-01), Suzuki et al.
patent: 3944867 (1976-03-01), Kaplan

Affiliated with

Also associated with

Rating

Cathode ray tube having improved shadow mask does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathode ray tube having improved shadow mask, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode ray tube having improved shadow mask will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2274642