Process for fabricating an improved cathode ray tube screen stru

Details Process for fabricating an improved cathode ray tube screen stru Process for fabricating an improved cathode ray tube screen stru

1974-10-15

1976-01-13

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

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

427 53, 427 54, 96 34, G03C 500, G03C 700

Patent

active

039321835

ABSTRACT:
A process for forming a color cathode ray tube screen structure, having means for enhancing the absorption of ambient light and providing improvement in the contrast of the image display involves the deposition of three superimposed substantially continuous window-defining layers of optical filter materials. The primary, secondary and tertiary filter layers have discretely disposed window areas formed therein to expose a pattern of filter areas representing the respective filter materials. The filter windows are of a shaping similar to that of the apertures in a spatially related pattern mask member. Each window exhibits a uniform periphery free of indentations, being so defined by a uniform opaque interstitial encompassment homogeneously made up of the three distinct layers of filter materials. Disposed over the filter windows is a patterned screen of cathodoluminescent phosphor elements, which upon electron excitation produces color emissions that are colormetrically related to the respective filter windows therebeneath.

REFERENCES:
patent: 3659761 (1971-03-01), Lange
patent: 3681111 (1972-08-01), Kaplan
patent: 3695871 (1972-10-01), Lange
patent: 3726678 (1973-04-01), Robinder
patent: 3734728 (1973-05-01), Kachel
patent: 3748515 (1973-07-01), Kaplan

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