Color picture tube having improved line screen

Details Color picture tube having improved line screen Color picture tube having improved line screen

1985-03-14

1986-12-23

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313461, H01J 2932, H01J 2907

Patent

active

046314415

ABSTRACT:
An improvement is made in a color picture tube having a substantially rectangular slit-aperture type shadow mask mounted therein in spaced relation to a substantially rectangular cathodoluminescent line screen. In the specific improvement, the cathodoluminescent lines of said screen, in front plan view, first increase in curvature with an increase in distance from the minor axis of the screen and then decrease in curvature with further increase in distance from the minor axis, to become substantially straight at the short sides of the screen.

REFERENCES:
patent: 3590303 (1971-06-01), Coleclough
patent: 3889145 (1975-06-01), Suzuki et al.
patent: 3925700 (1975-12-01), Saito
patent: 3947718 (1976-03-01), van Lent
patent: 4136300 (1979-01-01), Morrell

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