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. 25, 1994
Filed:
Dec. 27, 1991
Applicant:
Inventors:
Yong-geol Kweon, Seoul, KR;
Kyeong-nam Kim, Kyunggi, KR;
Assignee:
Samsung Electron Devices Co., Ltd., Kyunggi, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313414 ; 313412 ; 313425 ; 313460 ; 315 15 ;
Abstract
An electron gun for a cathode ray tube is formed such that the spacing between the electron beam passing holes in a static focus electrode is longer than that between the electron beam passing holes in a dynamic focus electrode which forms a dynamic quadrupole lens with the static focus electrode, thereby enhancing the focusing and convergence characteristics of electron beams.