Shadow mask assembly for color picture tube

Details Shadow mask assembly for color picture tube Shadow mask assembly for color picture tube

1989-10-24

1991-12-10

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313406, 313407, H01J 2907

Patent

active

050721500

ABSTRACT:
A shadow mask frame for a color picture tube has side walls which are cut out to form cut-out sections, leaving only a plurality of bridge portions. A separate supporting means for the frame is provided in a direct contact with the shadow mask. According to the shadow mask frame of the present invention, the compensation period or the purity drift period from the starting of the operation of the color picture tube to the stabilization of the screen images will become very short.

REFERENCES:
patent: 3710165 (1973-01-01), Tsuneta et al.
patent: 4670687 (1987-06-01), Gijrath et al.
patent: 4827180 (1989-05-01), Sone et al.

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