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:
Aug. 14, 2007
Filed:
Nov. 29, 2004
Sang-ho Jeon, Suwon-si, KR;
Byong-gon Lee, Suwon-si, KR;
Sang-Ho Jeon, Suwon-si, KR;
Byong-Gon Lee, Suwon-si, KR;
Samsung SDI Co., Ltd, Suwon-si, KR;
Abstract
An electron emission device includes a first substrate and a second substrate facing one another and having a predetermined gap therebetween. An electron emission region for emitting electrons is formed on the first substrate, and an illumination portion for displaying images responsive to the electrons emitted from the electron emission region is formed on the second substrate. A grid electrode is mounted between the first and second substrates and configured to focus the electrons emitted from the electron emission assembly. The grid electrode is provided with a plurality of electron passage openings, of which at least one portion of the interior wall of at least one of the electron passage openings is formed with an inclined plane relative to the first substrate. With the above-structured electron emission device, the grid electrode prevents and/or reduces one or more travel courses of electrons from being varied so that illumination of wrong pixels is prevented and/or reduced and overall color purity is improved.