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. 08, 2001
Filed:
Nov. 10, 1998
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A cathode ray tube according to the invention comprises an internal conductive film arranged on the inner wall surface of the envelope and extending from the funnel section to the neck section and a high resistance conductive film arranged in the neck section to contact the internal conductive film at an end of thereof and surround part of the electron gun assembly. The high resistance conductive film shows an electric resistance higher than that of the internal conductive film. Additionally, in a cathode ray tube according to the invention, the electric resistance of the high resistance conductive film in terms of per unit length along the axis of the tube is lower at and near the contact region held in contact with the corresponding end of the internal conductive film than at and near the opposite end of the high resistance conductive film.