Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1979-12-18
1981-10-06
Demeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313408, H01J 2907, H01J 2918
Patent
active
042937922
ABSTRACT:
A color picture tube having a cathodoluminescent screen, electron gun and a slit type apertured mask located between the screen and gun, wherein the slits in such mask are arranged in columns and the slits in each column are separated by webs, has an improved web configuration. Alternate webs within a column are of lesser thickness than the general mask thickness with the geometric center of the alternate webs being offset toward the screen side of the mask.
REFERENCES:
patent: 3882347 (1975-05-01), Suzuki et al.
patent: 3883770 (1975-05-01), Yamada et al.
patent: 3916243 (1975-10-01), Brown
patent: 3944867 (1976-03-01), Kaplan
patent: 4048536 (1977-09-01), Brown
Bruestle Glenn H.
DeMeo Palmer C.
Irlbeck Dennis H.
RCA Corporation
Whitacre Eugene M.
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