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:
May. 30, 2017
Filed:
Dec. 18, 2012
Applicants:
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Inventors:
Assignees:
Tsinghua University, Beijing, CN;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/304 (2006.01); H01J 3/02 (2006.01); B82Y 99/00 (2011.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
H01J 1/3042 (2013.01); H01J 1/304 (2013.01); H01J 3/021 (2013.01); B82Y 30/00 (2013.01); B82Y 99/00 (2013.01); H01J 2201/30469 (2013.01); H01J 2203/0212 (2013.01); H01J 2329/0455 (2013.01); H01J 2329/4608 (2013.01);
Abstract
A field emission electron source includes a linear carbon nanotube structure, an insulating layer and at least one conductive ring. The linear carbon nanotube structure has a first end and a second end. The insulating layer is located on outer surface of the linear carbon nanotube structure. The first conductive ring includes a first ring faceand a second ring face, an end surface of the linear carbon nanotube structure, and the first ring face are coplanar.