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:
Mar. 01, 1988
Filed:
Sep. 08, 1986
Masao Natsuhara, Otsu, JP;
Hiroshi Suzuki, Nagaokakyo, JP;
Hideo Muranishi, Osaka, JP;
Shigeya Ashizaki, Takatsuki, JP;
Matsushita Electronics Corporation, Kadoma, JP;
Abstract
In an in-line electron gun for a color picture tube, 10c aligned with three cathodes 10a, 10b and 10c, through-holes of a control grid 11 and an accelerating electrode 12 are spaced by a distance S.sub.1 ; distance S.sub.2 between inlet through-holes 13a, 13b and 13c of a first focusing electrode 13 are spaced by a distance S.sub.3 ; outlet through-holes 13d, 13e and 13f of the first focusing electrode 13 and inlet through-holes 14a, 14b and 14c of a second focusing electrode 14 are spaced by a distance S.sub.3 ; outlet through-holes 14d, 14e and 14f of the second focusing electrode 14 and of an anode, 15 are spaced by a distance S.sub.4. The distances are selected to have a relation of S.sub.4 <S.sub.3 <S.sub.1 <S.sub.2, enabling misconvergence to be minimized.