Tension mask registration and supporting system

Details Tension mask registration and supporting system Tension mask registration and supporting system

1984-01-18

1985-10-15

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313477R, 313292, 427 68, H01J 2902, H01J 2907, H01J 2986, B05D 506

Patent

active

045476969

ABSTRACT:
A color tube comprises a panel having a patterned screen of phosphor deposits. The panel includes a registration affording arrangement defined by a first plurality of cavities each comprising an elongated, substantially radially aligned portion formed at a selected peripheral location upon the screen side of the panel. A frame dimensioned to enclose the screen comprises first and second spaced-apart surfaces and a registration affording arrangement defined by a second like plurality of cavities, each also comprising an elongated, substantially radially aligned portion formed at a selected peripheral location upon the frame's first surface. The pluralities of panel and frame cavities are arranged so that, collectively, the axes of the elongated portions of the panel cavities and of the frame cavities exhibit substantially the same radial geometry. A tensed foil color selection electrode having a pattern of apertures has a peripheral portion bonded to the frame's second surface. An indexing arrangement comprises a like plurality of spherical elements individually received between an assigned panel cavity and an adjacent, oppositely disposed confronting frame cavity, so that when the panel and frame cavities overlie, the spherical elements establish a precise repeatable registration between the frame and the panel, and thus between the foil apertures and the screen.

REFERENCES:
patent: 2625734 (1953-01-01), Lan
patent: 2961560 (1960-11-01), Flyer
patent: 3284655 (1966-11-01), Oess
patent: 3894321 (1975-07-01), Moore

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