Tensioned foil shadow mask mounting

Details Tensioned foil shadow mask mounting Tensioned foil shadow mask mounting

1990-08-13

1991-10-01

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

445 30, 445 37, H01J 2907, H01J 902

Patent

active

050536745

ABSTRACT:
A generally rectangular mounting structure for attaching a tensioned foil shadow mask to the flat glass faceplate of a color cathode ray tube (CRT) includes four rails attached at respective ends thereof by means of four corner brackets spot welded to adjacent ends of a pair of rails. Each of the four corners of the rail structure is coated with a frit-based sealant to hermetically seal the corner bracket-rail interface, followed by baking, to prevent the collection of contaminants such as phosphor particles which heretofore collected in gaps between the corner bracket and rail only to later escape and cause CRT rejection or failure.

REFERENCES:
patent: 4737681 (1988-04-01), Dietch et al.
patent: 4767962 (1988-08-01), Adler et al.
patent: 4778427 (1988-10-01), Strauss
patent: 4804881 (1989-02-01), Strauss
patent: 4834686 (1989-05-01), Kautz et al.
patent: 4866334 (1989-09-01), Fendley et al.
patent: 4891028 (1990-01-01), Kautz et al.

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