Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1984-08-31
1986-06-03
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313402, 313477R, 220 21A, H01J 2981, H01J 2907
Patent
active
045932255
ABSTRACT:
A tension mask color cathode ray tube comprises an envelope funnel having a central axis and including a bell portion, one extremity of which has a sealing land. A flat or cylindrical face panel has a target adapted to receive a pattern of luminescent primary color elemental phosphor areas, with a sealing land circumscribing the target. A color selection electrode structure sealed between the sealing lands of the funnel and panel constitutes an integral part of the tube envelope. The electrode structure has a central opening dimensioned to enclose the panel target, and includes a frame supporting a tensed foil color selection electrode. The frame has a support surface fixedly receiving and maintaining the electrode in tension. The frame further has an axial dimension which establishes the color selection electrode at a predetermined Q-distance from the target on the face panel.
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Dietch Leonard
Palac Kazimir
Clarke, Jr. Ralph E.
Coult John H.
Moore David K.
O'Connor Cornelius J.
Razavi M.
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