Support structure for shadow mask of color cathode ray tube

Details Support structure for shadow mask of color cathode ray tube Support structure for shadow mask of color cathode ray tube

1979-12-18

1982-02-09

Krawczewicz, Stanley T.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313406, 313407, H01J 2980

Patent

active

043151892

ABSTRACT:
In a color cathode ray tube having a glass envelope and panel, a shadow mask is positioned adjacent a phosphor screen in the panel. Supporting members secure the shadow mask to the panel. These supporting members are responsive to the heat generated in the shadow mask to compensate for the thermal expansion of the shadow mask by displacing the shadow mask toward the phosphor screen. The supporting members each comprise a pair of plate-like segments spaced apart along at least a portion of their lengths. The plate-like segments are formed of metals having different coefficients of thermal expansion. No bi-metallic elements are used to form the plate-like segments of the supporting members.

REFERENCES:
patent: 3330980 (1967-07-01), Shrader
patent: 3399319 (1968-08-01), Schwartz et al.
patent: 3487251 (1969-12-01), Barten et al.
patent: 3524973 (1970-08-01), Rigdon
patent: 3573527 (1971-04-01), Hafkenscheid et al.
patent: 3700948 (1972-10-01), Palac
patent: 3823336 (1974-07-01), Nakamura et al.

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