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:
Mar. 19, 2013
Filed:
Mar. 31, 2011
Applicants:
Peng Liu, Beijing, CN;
Hai-yan Hao, Beijing, CN;
Shou-shan Fan, Beijing, CN;
Inventors:
Assignees:
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/30 (2006.01); H01J 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A field emission cathode device includes a substrate, a metal plate attached to the substrate, at least one electron emitter electrical connected with the metal plate, and a filler. The metal plate defines at least one through hole extending through the metal plate. The at least one electron emitter is fixed between the substrate and the metal plate and extends through the at least one through hole. The filler is filled into the at least one through hole to fix the at least one electron emitter.