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:
Mar. 06, 1990
Filed:
Nov. 09, 1988
Jean P Galves, Meylan, FR;
Pierre Merloz, Le Grand Lemps, FR;
Thomson-CSF, Paris, FR;
Abstract
Disclosed is a high luminance color screen for cathode tubes, comprising two fluorescence luminophors of different colors, the visible trace of which, under the effect of electron bombardment, has a color which can be adjusted by the acceleration voltage of the beam of said electrons. Said voltage is variable, during operation, between two extreme values V.sub.o and V.sub.1, in which the two luminophors are arranged on the transparent support of said screen is superimposed layers formed by powders of crystals of each of the said luminophors, separated from one another by plane faces. Said screen is characterized mainly by the fact that the barrier with plane faces comprises a first layer of silicon dioxide, a layer of zinc sulfide and a second layer of silicon dioxide, the layer of zinc sulphide being included between the two layers of silicon dioxide.