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. 02, 1989
Filed:
Nov. 16, 1987
Toshinao Sone, Kumagaya, JP;
Hiroshi Urata, Fukaya, JP;
Michio Nakamura, Kamisato, JP;
Tooru Takahashi, Fukaya, JP;
Hidetoshi Yamazaki, Fukaya, JP;
Kiyoshi Tokita, Fukaya, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A color picture tube having a shadow mask structure with a shadow mask and a mask frame supporting the shadow mask facing a phosphor screen inside a panel comprises a plurality of V-shaped support members, each having a folded portion apart from a sidewall of the mask frame and two arm portions extending from the folded portion. The support members support the shadow mask structure to the panel to control a relative distance beween the phosphor screen and the shadow mask according to thermal expansion of the shadow mask structure or the panel, whereby positions impinged by an electron beam on the phosphor screen remained invariably.