Method of installing mount assembly in cathode ray tube

Details Method of installing mount assembly in cathode ray tube Method of installing mount assembly in cathode ray tube

1987-03-04

1989-02-07

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With testing or adjusting

445 45, H01J 940, H01J 942

Patent

active

048028746

ABSTRACT:
There is disclosed a method of installing a mount assembly in a cathode ray tube wherein convergence characteristics are enhanced by properly setting levels of tube of a color cathode ray tube and of an electron gun. When a neck portion of the tube and a stem structure mounted with the electron gun are sealed to each other by heating, a distance between a standard level of the tube and that of the electron gun is measured. Comparison/arithmetic processing is effected both on the thus measured value and on a previously stored standard distance to seek a difference between the two values. The tube body or the electron gun is controlled by a moving operation so that the difference falls within an allowable value. After this, the sealing process is carried out.

REFERENCES:
patent: 3962764 (1976-06-01), Stewart et al.
patent: 3962765 (1976-06-01), Stachel et al.
patent: 4148117 (1979-04-01), Bracke et al.
patent: 4445874 (1984-05-01), D'Augustine et al.

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