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. 03, 2020
Filed:
Jan. 03, 2018
Applicant:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Inventors:
Sora Park, Seoul, KR;
Yoon-Ho Song, Daejeon, KR;
Jin-Woo Jeong, Daejeon, KR;
Jun Tae Kang, Daejeon, KR;
Assignee:
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/06 (2006.01); H01J 19/38 (2006.01); H01J 35/14 (2006.01);
U.S. Cl.
CPC ...
H01J 35/065 (2013.01); H01J 19/38 (2013.01); H01J 35/14 (2013.01); H01J 2235/06 (2013.01);
Abstract
An electron emission source includes a cathode electrode having a recess region formed in an upper portion thereof and the yarn emitter having a tip shape and provided in the recess region of the cathode electrode. The yarn emitter is spaced from an inner surface of the recess region of the cathode electrode.