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:
Dec. 19, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventors:
In-kyu Park, Kyungki-do, KR;
Yoo-seon Kim, Kyungki-do, KR;
Assignee:
Samsung Display Devices Co., Ltd., Syungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313460 ; 313414 ; 313446 ;
Abstract
An electron gun for a cathode ray tube includes a triode portion composed of a cathode, a first grid electrode and a second grid electrode. Each of the first and second grid electrodes has beam-guide holes. The beam-guide hole of the first grid electrode is larger than the beam-guide hole of the second grid electrode. The hole portion of the first grid electrode is thinner than the hole portion of the second grid electrode. The distance between the first grid electrode and the second grid electrode is two or three times greater than as the distance between the cathode and the first grid electrode.