Green emitting fluorescent composition and color television cath

Details Green emitting fluorescent composition and color television cath Green emitting fluorescent composition and color television cath

1977-07-15

1979-02-20

Cooper, Jack

Electric lamp and discharge devices

Cathode ray tube

Screen

313468, 2523014R, 2523014S, 2523016S, C09K 1118, C09K 1146, H01J 2920

Patent

active

041409400

ABSTRACT:
A cubic ZnS:Cu,Al phosphor and a cubic ZnS:Au,Al phosphor is mixed to provide a green emitting phosphor coposition. This composition emits green light having a color which is represented by a color point in the CIE standard chromaticity diagram having x-value and y-value within the ranges of 0.300<x<0.360 and 0.575<y<0.635, respectively, when excited by an electron beam. A color television cathode ray tube uses the fluorescent composition as a green emitting phosphor component, and a ZnS:Ag phosphor or a ZnS:Ag,Al phosphor as a blue emitting phosphor component, and a Y.sub.2 O.sub.2 S:Eu phosphor, a Y.sub.2 O.sub.3 :Eu phosphor or a YVO.sub.4 :Eu phosphor as a red emitting phosphor component.

REFERENCES:
patent: 2623858 (1952-12-01), Kroger
patent: 3891886 (1975-06-01), Woontner
patent: 4038205 (1977-07-01), Minnier et al.
VanGool et al., "Philips Res. Repts.", 15, pp. 254-274, 1960.
"Fluorescent Lamps & Lighting", Edited by Elenbaas, Chapter III, pp. 31-33, 42-44, 1962.

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