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:
Jan. 15, 2002
Filed:
Mar. 09, 2000
Hak-cheol Yang, Suwon, KR;
Samsung SDI Co., Ltd., Kyungki-Do, KR;
Abstract
An electron gun for a color cathode ray tube includes a triode unit, a main lens unit, and first and second auxiliary electrodes. The triode unit includes plural cathodes arrayed in a first direction and first and second electrodes each having corresponding plural electron beam passing holes corresponding to the respective cathodes. The main lens unit finally focuses and accelerates an electron beam and includes a third electrode forming a pre-focus lens with the second electrode. The first auxiliary electrode is coupled to one side surface of the second electrode facing the first electrode. The second auxiliary electrode is coupled to the other side surface of the second electrode facing the third electrode. With this arrangement, a beam spot of uniform size can be formed on the entire surface of a screen.