Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
Patent
1997-08-07
1999-08-31
O'Shea, Sandra
Electric lamp or space discharge component or device manufacturi
Process
With testing or adjusting
F23Q 2308
Patent
active
059445718
ABSTRACT:
The present invention provides an improvement in a method of making a plurality of color picture tubes of approximately the same size and including a mix of at least two different types of electron guns therein. The electron guns include each a plurality of electrodes, with each electrode having openings for the passage of three electron beams. The improvement comprises selecting materials for each electrode of the at least two different types of electron guns that will produce a minimum difference in the focus voltage sensitivities between the two different types of electron guns.
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*French Search Report dated: Apr. 25, 1997.
PCT Search Report.
Garnier Jean-Pierre
Trinchero Olivier Pierre
van Raalte John A
Irlbeck Dennis H.
O'shea Sandra
Smith Michael J.
Thomson Tubes and Displays, S.A.
Tripoli Joseph S.
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