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:
Jul. 08, 1986
Filed:
Apr. 11, 1985
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 24 ; 445 51 ; 313355 ; 313630 ; 427 77 ; 4271262 ;
Abstract
The present invention discloses a method of producing a discharge display device which enables a LaB.sub.6 cathode to be formed by a thick-film printing method. The method of the present invention comprises the steps of applying a paste prepared by mixing LaB.sub.6 powder with alkali glass powder in a proportion of 20-40 wt. % with respect to the LaB.sub.6 powder to a base electrode, burning the paste, and activating the paste by gas discharge with large current after an exhaustion step to form a LaB.sub.6 cathode on the base electrode.