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:
Jun. 10, 2003
Filed:
Dec. 21, 2000
Hideharu Ohmae, Osaka, JP;
Yoshikazu Demi, Shiga, JP;
Masayoshi Ozaki, Hyogo, JP;
Mitsunori Yokomakura, Osaka, JP;
Masayuki Ohmori, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A cathode ray tube capable of reducing the doming amount and suppressing the occurrence of moire stripes at the same time with improved effects to suppress the occurrence of moire stripes even more is provided. The protruding portions are protruding from the ends of the horizontal direction of the aperture to the inside of the aperture . With regard to the horizontal cross sections of the protruding portions , the portions facing each other left and right via the aperture are formed to be asymmetrical to the center line in order to reduce or block the incident electron beam. By forming the protruding portions , the doming amount can be reduced and the occurrence of moire stripes can be suppressed at the same time. Furthermore, by forming the portions facing each other left and right of the protruding portions asymmetrically, the effects to suppress the occurrence of moire stripes can be improved even more.