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. 15, 2000
Filed:
Mar. 23, 1998
Applicant:
Inventor:
Toshio Ohoshi, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 51 ;
Abstract
A method for manufacturing a field emission type emitter including a cathode electrode formed on a substrate, an insulating film formed on the cathode electrode, a cavity formed in the insulating film, a cathode formed on the cathode electrode inside the cavity, and a gate electrode formed on the insulating film, comprising the step of electrochemically making the cathode in an electrolyte containing of a salt of a metal. The metal is typically the same as the metal forming the cathode electrode.