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:
May. 11, 1993
Filed:
Dec. 30, 1991
Applicant:
Inventor:
Morikazu Konishi, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313495 ; 313309 ; 313312 ; 313336 ; 313351 ; 313461 ;
Abstract
In a flat panel display using a field emission type cathode array, a flat fluorescent screen is arranged between a cathode array formed on a flat substrate and a screen comprising a glass plate having a convex curved shape in parallel with the substrate. A vacuum is present in a space between the fluorescent screen and the cathode array and the space between the fluorescent screen and the substrate.