Cathode-ray tube screening exposure method

Details Cathode-ray tube screening exposure method Cathode-ray tube screening exposure method

1976-08-02

1977-10-04

O'Connor, Edna M.

96 361, G03B 4100

Patent

active

040527255

ABSTRACT:
An improvement in a method of making a luminescent screen structure for a cathode-ray tube is disclosed. The tube has a faceplate panel and an apertured color selection electrode in a predetermined position spaced from the panel. A photosensitive composition is coated on a surface of the panel. The solubility of the composition is altered when exposed to light through the electrode. The improvement comprises sensing the strength of a magnetic field passing through the electrode and adjusting the time and/or intensity of the exposure light as a function of the sensed strength of the magnetic field.

REFERENCES:
patent: 3636836 (1972-01-01), Maddox

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