Shadow mask for a color cathode ray tube

Details Shadow mask for a color cathode ray tube Shadow mask for a color cathode ray tube

1997-10-24

1999-11-16

Patel, Ashok

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907

Patent

active

059863927

ABSTRACT:
A shadow mask for a color CRT, by which the electron beams can be focussed to the corresponding fluorescent body coated on the inner surface of a panel, includes: a first layer positioned toward a fluorescent body, and having thermal expansion coefficient between 5.0.times.10.sup.-6 /.degree. C. and 13.times.10.sup.-6 /.degree. C., and a second layer oriented toward electron guns, and having thermal expansion coefficient of below 5.0.times.10.sup.-6 /.degree. C. The second layer is 0.001 to 0.5 times as thick as the first layer.

REFERENCES:
patent: 2890362 (1959-06-01), Francken
patent: 4612061 (1986-09-01), Suzuki et al.
patent: 4698545 (1987-10-01), Inaba et al.
patent: 5752755 (1998-05-01), Rho et al.
patent: 5841223 (1998-11-01), Muramatsu et al.

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