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:
Dec. 27, 1977
Filed:
Sep. 02, 1976
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313489 ; 313112 ; 313201 ; 313220 ; 313493 ;
Abstract
A gas discharge display device of multilayer structure comprises a plurality of discharge panel units in stacked relation to each other. Ultraviolet ray absorption layers are located between the discharge panel units. Phosphorescent material emits light of different brightness in proportion to the volume of ultraviolet rays from each discharge panel unit which rays excite such phosphorescent material. The phosphorescent material is supported on the discharge panel unit on the display surface side of the device.