Shadow mask having slot-like apertures with variable...

Details Shadow mask having slot-like apertures with variable... Shadow mask having slot-like apertures with variable...

H - Electricity

01

J

313/35.16

H01J 29/07 (2006.01)

Patent

CA 1067560

ABSTRACT: A cathode ray tube for displaying coloured pictures of the shadow mask type. The shadow mask has rows of elongate apertures separated by bridges. By causing the vertical pitch, that is the distance between the centres of two successive apertures in a row, to vary in a given manner, substantially no irregularities in the applied phosphor lines occur any longer during the manufacture of the display screen.

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