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. 02, 2022
Filed:
Dec. 01, 2020
Applicant:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Inventors:
Yoon-Ho Song, Daejeon, KR;
Jun-Tae Kang, Daejeon, KR;
Jin-Woo Jeong, Daejeon, KR;
Jae-Woo Kim, Daejeon, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/16 (2006.01); H01J 35/06 (2006.01); H01J 35/14 (2006.01); H01J 35/04 (2006.01);
U.S. Cl.
CPC ...
H01J 35/16 (2013.01); H01J 35/045 (2013.01); H01J 35/064 (2019.05); H01J 35/14 (2013.01);
Abstract
Provided is an X-ray tube. The X-ray tube includes a cathode electrode, an anode electrode vertically spaced apart from the cathode electrode, an emitter on the cathode electrode, a gate electrode disposed between the cathode electrode and the anode electrode, the gate electrode including an opening at a position corresponding to the emitter, and a spacer provided between the gate electrode and the anode electrode. The spacer includes an insulator and conductive dopants doped in the insulator.