Method of manufacturing and adjusting a color picture reproducti

Details Method of manufacturing and adjusting a color picture reproducti Method of manufacturing and adjusting a color picture reproducti

1984-12-17

1987-01-06

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313421, 313428, 315368, 315387, H01J 2907, H01J 2951

Patent

active

046349227

ABSTRACT:
A color picture tube comprising three electron-gun systems, in which on the shadow mask or a part connected thereto, phosphorescent marks are attached to the rear side thereof. These marks can be used for checking the exact position of the electron beams during adjustment. By suitably delaying the chrominance signals it is possible to improve the E-W convergence.

REFERENCES:
patent: 2611003 (1952-09-01), Friend
patent: 4456853 (1984-06-01), Robinder et al.

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