Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
Patent
1989-06-22
1990-11-27
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With testing or adjusting
445 30, B23K 900
Patent
active
049732803
ABSTRACT:
Process and apparatus are disclosed for use in the manufacture of a color cathode ray tube having a shadow mask with a central pattern of apertures mounted in tension on a transparent flat front panel. The mask aperture pattern is registered with a catholdoluminescent screen pattern of corresponding geometry and position on an inner surface of the panel. The shadow masks and front panels are respectively interchangeable. Signals are developed which are indicative of the positions of a mechanically stretched mask aperture pattern and an associated front panel screen pattern relative to a reference or to each other. Responsive to such signals, there is effected a relative positioning of the mask and screen until registration between the patterns is achieved.
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Adler Robert
Fendley James R.
Lange Howard G.
Prazak Charles J.
Steiner Johann
Ramsey Kenneth J.
Zenith Electronics Corporation
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