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, 1976
Filed:
Mar. 11, 1975
Matsushita Electronics Corporation, Kadoma, JA;
Abstract
A color picture tube, wherein a set of three electron beams emitted from respective three electron-emitting members of an in-line type electron gun, or from respective three electron guns, is projected through slot-shaped apertures of a shadow mask onto a screen, and sets of each three luminous strips are formed separated from each other and surrounded by light absorbing black film, and the three electron beams selectively energize the luminous strips to emit luminous color images, the length and width of the slots on the shadow mask and those of the phosphor strips having specified correlations in the central part of the picture screen and the shadow mask, and different correlations in the corner parts of the screen and the shadow mask so that color picture reproduction in contrast, brightness and color balance is satisfactory over the entire screen.