Weak beam scanning of cathode ray tubes

Details Weak beam scanning of cathode ray tubes Weak beam scanning of cathode ray tubes

1987-12-23

1990-07-10

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

Including use of electric arc or current for removing an...

445 6, H01J 944

Patent

active

049404407

ABSTRACT:
In the processing of cathode ray tubes, both the incidence of dark center cathode and residual gas can be reduced by including the step of scanning the mask and screen of the tube with a weak, defocused electron beam, carried out after getter flashing and preferably prior to aging.

REFERENCES:
patent: 4395243 (1983-07-01), Toyama et al.

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