Making shadow mask with slit-shaped apertures for CRT

Details Making shadow mask with slit-shaped apertures for CRT Making shadow mask with slit-shaped apertures for CRT

1975-05-05

1976-08-10

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 36, 29 2517, 156 8, 313403, 313408, G03C 500

Patent

active

039739651

ABSTRACT:
A color cathode ray tube provided with a fluorescent screen formed on the inner surface of the face plate of the envelope and comprising a plurality of stripes of phosphor elements, and a shadow mask formed with a plurality of slit apertures corresponding to the stripes of the phosphor element. Said slit apertures are spaced apart by transverse bridge members. Each slit aperture is surrounded by inclined side walls, and the cross-section of each transverse bridge along the longitudinal axis of the slit aperture takes a form of a hexagon having two lateral rising edge portions positioned at about the middle of the thickness of the shadow mask.

REFERENCES:
patent: 3423261 (1969-01-01), Frantzen
patent: 3574013 (1971-04-01), Frantzen
patent: 3652895 (1972-03-01), Tsuneta et al.
patent: 3669771 (1972-06-01), Lerner
patent: 3844005 (1974-10-01), Yamada et al.
patent: 3882347 (1975-05-01), Suzuki et al.

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