Faceplate front assembly with improved tension mask support stru

Details Faceplate front assembly with improved tension mask support stru Faceplate front assembly with improved tension mask support stru

1988-04-06

1990-01-02

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313408, H01J 2981

Patent

active

048915459

ABSTRACT:
A faceplate assembly for a color cathode ray tube includes a glass faceplate having on its inner surface a centrally disposed phosphor screen. A metal foil shadow mask is mounted in tension on a mask support structure located on opposed sides of the screen and secured to the inner surface of the faceplate. The support structure according to the invention comprises a hollow shell filled with at least two devitrified solder glass compositions each having a different viscosity when in the form of an undevitrified solder glass paste. A process for manufacturing the inventive mask support structure is also provided.

REFERENCES:
patent: 3894321 (1975-07-01), Moore
patent: 4695761 (1987-09-01), Fendley

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