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:
Oct. 26, 1982
Filed:
Aug. 15, 1980
Mikio Noguchi, Chigasaki, JP;
Kazuho Kobayashi, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
Within a vacuum envelope constituted by a back base plate and a display panel, a thermionic cathode structure and first to third electrode structures are arranged in the mentioned order from the side of the back base plate to the side of the display panel. In the thermionic cathode structure a plurality of coiled heaters are arranged in a planar array such that each coiled heater corresponds in position to each of picture element regions regularly arranged in a fluorescent material layer provided on the inner side of the display panel. The coiled heaters are supported such that their effective thermionic electron emitting portions are held in space such that each of these portions corresponds to each of the picture elements, and their other portions are supported by a plurality of support members. These support members are arranged such that all the coiled heaters are connected in parallel to a heating power supply.