Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
Patent
1989-09-08
1991-03-12
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With testing or adjusting
445 30, H01J 900, H01J 2907
Patent
active
049989014
ABSTRACT:
A method is disclosed for use in the manufacture of a color cathode ray tube having a foil tension mask with a central pattern of apertures. A transparent flat front panel has a cathodoluminescent screen pattern on its inner surface. A plurality of mask support means, located on opposed sides of the screen pattern, have respective mask-receiving surfaces for receiving a shadow mask in tension. Q-height error data is developed according to the invention, and the aperture pattern of the mask in expanded and positioned in response to the error data to compensate for errors in Q-height to bring the mask apertures into registry with the screen pattern. Apparatus for measuring Q-height is also disclosed.
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"Improvements in the RCA Three-Beam Shadow-Mask Color Kinescope" by Grimes et al, pp. 315-326.
Adler Robert
Fendley James R.
Lange Howard G.
Prazak, III Charles J.
Steiner Johann
Ramsey Kenneth J.
Zenith Electronics Corporation
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