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公开(公告)号：US20190214216A1
公开(公告)日：2019-07-11
申请号：US16358370
申请日：2019-03-19
Inventor： Jin-Woo JEONG , Yoon-Ho SONG
CPC classification number: H01J35/065 , H01J35/045 , H01J35/16 , H01J2235/168
Abstract: Disclosed is an X-ray source, including: a cathode; an anode positioned on the cathode so as to face the cathode; emitters formed on the cathode; a gate electrode positioned between the cathode and the anode and including openings at positions corresponding to those of the emitters; an insulating spacer formed between the gate and the anode; and a coating layer formed on an internal wall of the insulating spacer, and including a material having a lower secondary electron emission coefficient than that of the insulating spacer.
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公开(公告)号：US20190080871A1
公开(公告)日：2019-03-14
申请号：US16123540
申请日：2018-09-06
Inventor： Jin-Woo JEONG , Yoon-Ho SONG
Abstract: The inventive concept relates to an apparatus for aging a field emission device configured to emitting electrons based on an electric field between a first electrode and a second electrode, and an aging method thereof. The apparatus according to an embodiment of an inventive concept includes a voltage generator and a current controller. The voltage generator increases the voltage applied to the first electrode to the target voltage level during the first time. The current controller increases the field emission current for the second time to the target current level and increases the pulse width of the field emission current for the third time to the target pulse width. According to the inventive concept, the performance of a large field emission device may be improved with high efficiency and low cost.
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公开(公告)号：US20180247787A1
公开(公告)日：2018-08-30
申请号：US15904820
申请日：2018-02-26
Inventor： Jin-Woo JEONG , Yoon-Ho SONG , Jun Tae KANG , Jae-Woo KIM
CPC classification number: H01J35/14 , G21K1/02 , H01J35/045 , H01J35/06 , H01J35/16 , H01J2235/062 , H01J2235/16 , H05G1/52
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.
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公开(公告)号：US20170213687A1
公开(公告)日：2017-07-27
申请号：US15414455
申请日：2017-01-24
Inventor： Jin-Woo JEONG , Yoon-Ho SONG
Abstract: The present disclosure relates to an X-ray tube, and more particularly, to an X-ray tube having a simple structure from which an element necessary for focusing an electron beam, such as a magnetic lens, and having generating an X-ray having a focal spot of a nanometer-scale. The present disclosure includes: a electron beam generation unit emitting an electron beam; a limiting electrode unit limiting the electron beam emitted from the electron beam generation unit; and a target unit including a target material emitting an X-ray when the limited electron beam collides with the target material, wherein the limiting electrode includes of an electron beam limiting electrode allowing a portion of the emitted electron beam to pass therethrough and to be delivered to the target unit.
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公开(公告)号：US20140161232A1
公开(公告)日：2014-06-12
申请号：US14099201
申请日：2013-12-06
Inventor： Jin Woo JEONG , Yoon-Ho SONG , Sungyoul CHOI , Jun Tae KANG , Jae-woo KIM
CPC classification number: H01J35/065 , H01J35/14 , H01J35/305 , H01J2201/30469 , H01J2235/068
Abstract: An X-ray tube is provided. The X-ray tube includes a first housing including an X-ray window formed therein, a second housing being rotatable about a rotational shaft installed within the first housing, an anode installed on the rotational shaft within the second housing and positioned in one side of the rotational shaft in an extending direction of the rotational shaft, an emitter installed on the rotational shaft within the second housing, positioned in the other side of the rotational shaft in the extending direction of the rotational shaft, and emitting electron beams, a lens unit installed between the anode and the emitter and focusing the electron beams emitted from the emitter to the anode, and an electron beam deflection unit installed on the rotational shaft to deflect an angle of electron beams moving toward the anode from the lens unit.
Abstract translation: 提供X射线管。 X射线管包括第一壳体，其包括形成在其中的X射线窗口，第二壳体可围绕安装在第一壳体内的旋转轴旋转，阳极安装在第二壳体内的旋转轴上并且位于 所述旋转轴在所述旋转轴的延伸方向上安装在所述第二壳体内的所述旋转轴上，位于所述旋转轴的另一侧沿所述旋转轴的延伸方向，并且发射电子束，透镜单元 安装在阳极和发射器之间并将从发射器发射的电子束聚焦到阳极，以及安装在旋转轴上的电子束偏转单元，以偏转从透镜单元向阳极移动的电子束的角度。
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Patent Agency Ranking
公开(公告)号：US20230078172A1
公开(公告)日：2023-03-16
申请号：US17861841
申请日：2022-07-11
Inventor： Sunghoon CHOI , Yoon-Ho SONG , Jin-Woo JEONG , Sora PARK
Abstract: Provided is a backscattered X-ray image device based on multi-sources. The backscattered X-ray image device includes an X-ray tube array configured to generate X-rays, first slit plates provided on the X-ray tube array and having a first slit through which the X-rays pass, second slit plates provided on the first slit plates and having second slits defined in a direction different from that of the first slit, and detectors provided on the second slit plates and having a narrow gap in the same direction as the first slit, the detectors being configured to detect a backscattered beam that is emitted from a subject receiving the X-rays.
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公开(公告)号：US20220208501A1
公开(公告)日：2022-06-30
申请号：US17562801
申请日：2021-12-27
Inventor： Ki Nam YUN , Yoon-Ho SONG , Jun-Tae KANG , Jeong-Woong LEE , Jin-Woo JEONG
Abstract: Provided is a method for manufacturing an electric field emission device. The method for manufacturing the electric field emission device includes winding a carbon nanotube yarn around outer circumferential surfaces of a metal plate in a first direction, pressing both side surfaces of the metal plate through a pair of metal structures, wherein a top surface of the metal plate is exposed from the metal structures, and an area of the top surface of the metal plate is less than that of each of both the side surfaces of the metal plate, and cutting the carbon nanotube yarn at an edge portion of the top surface of the metal plate in the first direction to form a plurality of emitters.
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公开(公告)号：US20180211806A1
公开(公告)日：2018-07-26
申请号：US15697272
申请日：2017-09-06
Inventor： Jin-Woo JEONG , Yoon-Ho SONG
Abstract: Provided is an electron emission source including a substrate, a fixed structure provided on the substrate, and an electron emission yarn provided between the substrate and the fixed structure. The fixed structure includes a first portion having a first width and a second portion having a second width greater than the first width, and the electron emission yarn extends on a first sidewall of the first portion of the fixed structure from between the fixed structure and the substrate.
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公开(公告)号：US20170213685A1
公开(公告)日：2017-07-27
申请号：US15233198
申请日：2016-08-10
Inventor： Jun Tae KANG , Yoon-Ho SONG , Jae-Woo KIM , Jin-Woo JEONG
IPC: H01J35/06
CPC classification number: H01J37/063 , H01J7/18 , H01J7/186 , H01J9/39 , H01J19/48 , H01J21/20 , H01J29/46 , H01J29/488 , H01J29/50 , H01J35/06 , H01J35/065 , H01J35/165 , H01J35/20 , H01J2201/196 , H01J2201/317 , H01J2209/385 , H01J2209/3893 , H01J2229/4827 , H01J2229/4831 , H01J2229/94 , H01J2235/068 , H01J2235/205 , H01J2237/032 , H01J2237/036 , H01J2237/06375 , H01J2237/1825
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.
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公开(公告)号：US20170135189A1
公开(公告)日：2017-05-11
申请号：US15273486
申请日：2016-09-22
Inventor： Jin-Woo JEONG , Yoon-Ho SONG
CPC classification number: H05G1/30 , A61B6/00 , A61B6/032 , A61B6/4007 , H01J35/06 , H01J35/065 , H01J35/08 , H01J35/14 , H05G1/10 , H05G1/56 , H05G1/62
Abstract: Provided herein is a radiography apparatus including an X-ray source configured to irradiate a subject radiation, and a sensing module configured to sense the radiation having passed through the subject, wherein the X-ray source includes a cathode electrode comprising an electric field emitting source configured to emit electrons, an anode electrode disposed opposite to the cathode electrode and configured to use the electrons to generate the radiation, and a current control unit connected to the cathode electrode to control an amount of the electrons.
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