公开(公告)号：US10580612B2

公开(公告)日：2020-03-03

申请号：US15861554

申请日：2018-01-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sora Park ,  Yoon-Ho Song ,  Jin-Woo Jeong ,  Jun Tae Kang

IPC: H01J35/06 ,  H01J19/38 ,  H01J35/14

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.

公开(公告)号：US10559446B2

公开(公告)日：2020-02-11

申请号：US15904820

申请日：2018-02-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo Jeong ,  Yoon-Ho Song ,  Jun Tae Kang ,  Jae-Woo Kim

IPC: H01J35/00 ,  H01J35/14 ,  G21K1/02 ,  H01J35/16 ,  H01J35/06 ,  H05G1/52 ,  H01J35/04

Abstract: Provided is an X-ray source including a vacuum closed tube. The X-ray source includes a high voltage connection module, a tube module, and a magnetic lens system into which the tube module is inserted. The tube module includes a vacuum closed tube. The vacuum closed tube includes a cathode electrode provided at one end thereof, a nano-emitter on the cathode electrode, an anode electrode provided at the other end, and a first insulation spacer provided between the cathode electrode and the anode electrode. In addition, the vacuum closed tube includes a first conductive tube and a second conductive tube both provided between the cathode electrode and the anode electrode and separated from each other by the first insulation spacer, and a first collimator block covering an inner surface of the first insulation spacer and having a first opening.

公开(公告)号：US10438765B2

公开(公告)日：2019-10-08

申请号：US14943996

申请日：2015-11-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin Woo Jeong ,  Yoon Ho Song ,  Jun Tae Kang ,  Jae Woo Kim

IPC: H01J35/04 ,  H01J29/46 ,  H01J3/02 ,  H01J35/06

Abstract: Provided herein is a field emission device. The field emission device includes a cathode which is connected to a negative power supply and emits electrons, an anode which is connected to a positive power supply and includes a target material receiving the electrons emitted from the cathode, and a ground electrode which is formed to face the anode and has an opening through which the electrons emitted from the cathode pass. The ground electrode is grounded so that when an arc discharge occurs due to high voltage operation of the anode, electric charge produced by the arc discharge is emitted to a ground.

公开(公告)号：US10147581B2

公开(公告)日：2018-12-04

申请号：US15233198

申请日：2016-08-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun Tae Kang ,  Yoon-Ho Song ,  Jae-Woo Kim ,  Jin-Woo Jeong

IPC: H01J7/18 ,  H01J19/48 ,  H01J21/20 ,  H01J29/50 ,  H01J35/16 ,  H01J35/20 ,  H01J37/06 ,  H01J37/063 ,  H01J29/48 ,  H01J35/06 ,  H01J9/39 ,  H01J29/46

Abstract: Disclosed is an x-ray tube including a hybrid electron emission source, which uses, as an electron emission source, a cathode including both a field electron emission source and a thermal electron emission source. An x-ray tube includes an electron emission source emitting an electron beam, and a target part including a target material that emits an x-ray as the emitted electron beam collides with the target part, wherein the electron emission source includes a thermal electron emission source and a field electron emission source, and emits the electron beam by selectively using at least one of the thermal electron emission source and the field electron emission source.

公开(公告)号：US09640362B2

公开(公告)日：2017-05-02

申请号：US14605830

申请日：2015-01-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun Tae Kang ,  Yoon-Ho Song

IPC: H01J35/16 ,  H01J35/06

CPC classification number: H01J35/16 ,  H01J35/06

Abstract: Provided is an X-ray tube including an anode, a target on the anode, a cathode disposed separate from the target and the anode and comprising an emitter providing an electron beam to the target, and a side wall disposed between the cathode and the anode, and surrounding the target and the emitter. The side wall reflects a light generated by collision of the electron beam with the target to the cathode, and electrically insulates the cathode from the anode.

公开(公告)号：US20140111081A1

公开(公告)日：2014-04-24

申请号：US14057892

申请日：2013-10-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Woo Jeong ,  Jae-woo Kim ,  Yoon-Ho Song ,  Jun Tae Kang ,  Sungyoul Choi

IPC: H01J9/02 ,  H01J1/304

CPC classification number: H01J9/025 ,  H01J1/304 ,  H01J29/04 ,  H01J35/065 ,  H01J2329/0455

Abstract: Disclosed is a field emitter electrode including a bonding unit formed on a substrate, and a plurality of carbon nanotubes fixed to the substrate by the bonding unit, in which the bonding unit includes a carbide-based first inorganic filler and a second inorganic filler formed of a metal.

Abstract translation: 公开了一种场致发射电极，其包括形成在基板上的接合单元和通过接合单元固定到基板的多个碳纳米管，其中接合单元包括碳化物基第一无机填料和第二无机填料， 金属。