Shadow mask type color cathode ray tube and shadow mask

Details Shadow mask type color cathode ray tube and shadow mask Shadow mask type color cathode ray tube and shadow mask

1998-03-25

2000-02-01

Day, Michael H.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907

Patent

active

060206799

ABSTRACT:
A shadow mask type color cathode ray tube prevents rotation of light emitted through slots in a shadow mask that would form a zigzagged stripe during an exposure of a fluorescent film. The slots are rotated at an angle .theta..sub.1 about a center of the slots in a direction opposite to the direction of rotation, whereby light passing through the slots is offset, so that a vertical striped fluorescent surface can be thus obtained.

REFERENCES:
patent: 3888673 (1975-06-01), Suzuki et al.
patent: 3890151 (1975-06-01), Suzuki et al.
patent: 3947718 (1976-03-01), van Lent
patent: 4049451 (1977-09-01), Law
patent: 4665339 (1987-05-01), Masterton et al.

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