Method of manufacturing and adjusting a color picture tube

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

1984-12-17

1987-04-21

Moore,, David

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313421, 445 4, H01J 2907, H01J 2982, H01J 942

Patent

active

046599576

ABSTRACT:
A three electron gun color picture tube includes phosphorescent marks attached to the rear side fo the shadow mask. These marks can be used for checking the exact position of the electron beams during adjustment.

REFERENCES:
patent: 4160935 (1979-07-01), Groot et al.
patent: 4456853 (1984-06-01), Robinder et al.

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