Process for an improved tension mask support structure

Details Process for an improved tension mask support structure Process for an improved tension mask support structure

1989-06-06

1990-05-08

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

65 43, H01J 2906

Patent

active

049234226

ABSTRACT:
A process is disclosed for use in the manufacture of a color cathode ray tube having a flat faceplate and tensed foil shadow mask. The process comprises providing a trough-like shadow mask support structure for receiving and securing the mask and filling the structure with a devitrifying solder glass paste of relatively low viscosity. The structure is then over-filled with devitrifying solder glass paste of relatively high viscosity. The structure is joined with the faceplate with the plate of relatively high viscosity in contact with the faceplate. The faceplate and the structure is heated to a temperature effective to shrink the solder glass paste into the structure and devitrify the paste to permanently secure the structure to the faceplate.

REFERENCES:
patent: 2768475 (1956-10-01), Seelen et al.
patent: 3623855 (1971-11-01), Boon
patent: 4482579 (1984-11-01), Fujii et al.
patent: 4695761 (1987-09-01), Fendley
patent: 4745328 (1988-05-01), Strauss

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