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. 27, 1979
Filed:
Feb. 10, 1977
John G Endriz, Trenton, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
An image display device includes at least one display cell having the following in spaced relation: a photocathode; multiplier dynodes, an anode electrode; and a cathodoluminescent screen. In addition to an optical feedback fluorescent material, the anode electrode includes a material which exhibits slow fluorescence, e.g., Y.sub.2 O.sub.3 :Gd3%, such that it emits light energy for a finite time period after it has been excited by electrons. In the operation of the display device, an electrical discharge is employed to produce the desired optical output at the cathodoluminescent screen. Some of the electrons created in the discharge strike the anode electrode, causing light energy to be directed to the photocathode where it is converted into free electrons. The presence of these free electrons ensures the rapid initiation of subsequent electrical discharges. In other embodiments, the electrical discharge may be obtained through ion feedback or plasma discharge.