Strip-type shadow mask effective to alleviate degrouping

Details Strip-type shadow mask effective to alleviate degrouping Strip-type shadow mask effective to alleviate degrouping

1992-11-12

1994-11-08

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313402, H01J 2981, H01J 2907

Patent

active

053630114

ABSTRACT:
A striped-screen tension mask color CRT has a flat glass face with stripes of trios of colored-light-emitting phosphors deposited on its inner surface. An associated strip-type shadow mask has a predetermined downward curvature from center to sides effective to alleviate degrouping of electron beams when the tube is activated.

REFERENCES:
patent: 2842696 (1958-07-01), Fischer-Colbrie
patent: 3638063 (1972-01-01), Tachikawa et al.
patent: 4859549 (1989-08-01), Hayashi
patent: 4893054 (1990-01-01), Kobayashi
patent: 4900977 (1990-02-01), Lopata et al.
patent: 5216321 (1993-06-01), Kawamura et al.

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