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:
Sep. 07, 1993
Filed:
Sep. 30, 1991
Won H Kim, Kyungsangbook, KR;
Goldstar Co., Ltd., , KR;
Abstract
An electron gun for a color picture tube comprising six spaced grid electrodes aligned in the direction that electron beams proceed. The fourth grid electrode comprises a pair of plate-shaped grid electrodes arranged to form a space therebetween and electrically connected with each other. Both plate-shaped grid electrodes are also connected with the second of the grid electrodes so that they receive the same voltage. The space defined between both plate-shaped grid electrodes is variable within the range corresponding to 0.29 to 1.15 times the thickness of each plate-shaped grid electrode. By the construction of the fourth grid electrode, the spaces defined between respective adjacent grid electrodes can be reduced. As a result, the generation of undesirable stray is restricted. Also, the kind of using electrodes can be widely selected, since the space defined between one side fourth grid electrode and the other side fourth grid electrode can be varied.