The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 1979
Filed:
Jul. 15, 1977
Yasuhiko Uehara, Mobara, JP;
Susumu Ohmatoi, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Dai Nippon Toryo Co., Ltd., Osaka, JP;
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.