Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1999-02-16
2000-08-29
Font, Frank G.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313403, 313 6, H01J 2980
Patent
active
061113484
ABSTRACT:
A color cathode ray tube is provided with a saddle-shaped shadow mask.
As a result, the sensitivity to doming and microphonics of the mask is improved. This is advantageous, in particular, for a cathode ray tube having a very flat display window. Preferably, the display device in which the cathode ray tube is employed is provided with two dynamic quadrupoles, for example, in front of the electron gun and in front of a deflection unit.
REFERENCES:
patent: 4280077 (1981-07-01), Villanyi
patent: 5276377 (1994-01-01), Van Nes et al.
Boshouwers Augustinus H. M.
Horne Remko
Sluyterman Albertus A. S.
Ter Weeme Berend J. W.
Font Frank G.
Fox John C.
Punnoose Roy M.
U.S. Philips Corporation
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