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. 08, 2002
Filed:
Jun. 24, 1999
Kazumasa Hirayama, Yokohama, JP;
Yuzuru Sasaki, Fukaya, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Disclosed is a method of manufacturing a cathode ray tube, in which an untreated panel for a cathode ray tube is supplied to a phosphor screen-forming line including a black film-forming step for forming a black film, a phosphor film-forming step for forming a phosphor film, and an aluminum film-forming step for forming an aluminum film to form a pattern of a phosphor screen consisting of the black film, the phosphor film and the aluminum film on the inner surface of the panel. The manufacturing method includes the steps of rejecting from the phosphor screen-forming line at least one defective panel selected from the group consisting of a panel defective in the black film, a panel defective in the phosphor film and a panel defective in the aluminum film, recycling the rejected defective panel to the phosphor screen-forming line, and forming again a pattern of a phosphor screen consisting of a black film, a phosphor film and an aluminum film on the inner surface of the panel recycled to the phosphor screen-forming line. Where the untreated panel for the cathode ray tube conflicts with the rejected defective panel at a starting point of the phosphor screen-forming line, the defective panel is supplied in preference to the untreated panel to the phosphor screen-forming line.