Color cathode ray tube having shadow mask structure with curl re

Details Color cathode ray tube having shadow mask structure with curl re Color cathode ray tube having shadow mask structure with curl re

1998-03-06

2000-08-29

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313404, 313406, H61J 2980

Patent

active

061113468

ABSTRACT:
A color cathode ray tube includes a generally rectangular shadow mask having a curved apertured portion having a multiplicity of electron-transmissive apertures, a curved imperforate portion surrounding and integral with the apertured portion and a skirt portion bent back from a periphery of the curved imperforate portion, and a generally rectangular support frame for suspending the shadow mask by spot welding the skirt portion thereto, within a panel portion of the color cathode ray tube. The skirt portion is provided with a plurality of slits extending in a direction of a height of the skirt portion and a plurality of embossments extending in the direction of the height of the skirt portion, and the slits and the embossments are juxtaposed around a circumference of the skirt portion.

REFERENCES:
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patent: 3855493 (1974-12-01), Snook et al.
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patent: 4949009 (1990-08-01), Iwamoto
patent: 5576595 (1996-11-01), Inoue

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