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:
Nov. 04, 2003
Filed:
May. 29, 2002
Applicant:
Inventor:
Tae-Sik Oh, Suwon, KR;
Assignee:
Samsung SDI Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/956 ; H01J 2/950 ;
U.S. Cl.
CPC ...
H01J 2/956 ; H01J 2/950 ;
Abstract
An electron gun for a cathode ray tube includes a cathode for radiating thermal electrons, control and screen electrodes disposed away from the cathode at a predetermined distance in respective order, a focus electrode disposed away from the screen electrode, the focus electrode having upper and lower cylinders and an inclined portion disposed between the upper and lower cylinders, and an anode electrode formed in a cylindrical shape, the upper cylinder, the inclined portion, and a part of the lower cylinder are disposed in the anode electrode. A length S of the upper cylinder in a direction of a tube axis is less than a length T of the inclined portion.