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:
Dec. 02, 1986
Filed:
Dec. 27, 1984
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A mask-focusing color picture tube comprising an evacuated envelope; means to generate a number of electron beams; a display screen comprising a large number of phosphor stripes luminescing in different colors; a plurality of masks being spaced in the predetermined distance each other, individually having a number of apertures which is arranged in rows and being disposed in the vicinity of said screen, each electron beam being assigned to phosphor stripe of a respective color through said corresponding mask aperture, the improvement comprising, at least one of said plurality of masks having a plurality of projections on at least one side of said mask, said projections being separated each other by the rows of said apertures.