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. 01, 1994
Filed:
Mar. 09, 1992
Applicant:
Inventors:
Masami Okita, Kanagawa, JP;
Katsuhiro Akimoto, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; F21K / ;
U.S. Cl.
CPC ...
313506 ; 313509 ; 313498 ;
Abstract
A light emitting device has a transparent substrate, a substantially transparent first electrode layer formed on the transparent substrate, a phosphor layer formed on the first electrode layer, a second electrode layer formed on the phosphor layer, an insulating layer formed on the second electrode layer, and a third electrode layer formed on the insulating layer. A hot electron is generated by the application of a voltage to the second and third electrode layers, and the light emitting device is energized to become luminuous by injecting the hot electron thus generated into the phosphor layer.