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公开(公告)号：US10354827B2
公开(公告)日：2019-07-16
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：US12283448B2
公开(公告)日：2025-04-22
申请号：US18086845
申请日：2022-12-22
Inventor： Jin-Woo Jeong
Abstract: A micro focus X-ray tube is provided. The micro focus X-ray tube has a bonding structure in which a ceramic and a metal without an exhaust pipe are stacked by using a nano electric field emitter of an excellent feature.
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公开(公告)号：US12167923B2
公开(公告)日：2024-12-17
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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14.发明授权公开(公告)号：US11690587B2
公开(公告)日：2023-07-04
申请号：US17172549
申请日：2021-02-10
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: A61B6/5217 , A61B6/461 , A61B6/486 , A61B6/487 , A61B6/5205 , A61B6/5211 , A61B6/5235 , A61B6/5264 , A61B6/541 , A61B6/542 , A61B6/545 , G01N23/04 , G06T7/20 , G01N2223/306 , G06T2207/10116 , G06T2207/20216
Abstract: Disclosed is an X-ray image processing apparatus including a data obtaining unit generating first to N-th images indicating an internal structure of an object and an image processing unit receiving the first to N-th images from the data obtaining unit, detecting a movement of the object, and generating a final image from the first to N-th images based on the movement of the object. The data obtaining unit actively controls an X-ray pulse irradiated based on the movement of the object.
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公开(公告)号：US10701789B2
公开(公告)日：2020-06-30
申请号：US15879323
申请日：2018-01-24
Inventor： Sora Park , Yoon-Ho Song , Jin-Woo Jeong
Abstract: Provided is a method for driving an X-ray source, which includes a cathode electrode, an electron source provided on the cathode electrode and configured to emit an electron beam, and an anode target including an electron beam irradiation surface with the electron beam irradiated thereto, the method including providing the electron beam in a plurality of main pulses, wherein each of the main pulses includes a plurality of short pulses having an idle time and a pulse time, and each of the idle time and the pulse time is shorter than a duration time of the main pulse, wherein applying the plurality of short pulses comprises irradiating the electron beam from the electron source towards the electron beam irradiation surface during the pulse time; and idling the electron beam during the idle time, wherein a duty cycle of the short pulse is 0.4 to 0.6, which is obtained by dividing the idle time by a sum of the pulse time and the idle time.
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Patent Agency Ranking
公开(公告)号：US10522316B2
公开(公告)日：2019-12-31
申请号：US16358370
申请日：2019-03-19
Inventor： Jin-Woo Jeong , Yoon-Ho Song
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：US10455677B2
公开(公告)日：2019-10-22
申请号：US15459661
申请日：2017-03-15
Inventor： Jun Tae Kang , Yoon-Ho Song , Jin-Woo Jeong
Abstract: Provided is an X-ray generator including a thermal electron emission type X-ray generator configured to generate a negative high voltage and a filament current, a field electron emission type X-ray generator including an anode electrode to be grounded, and configured to use the negative high voltage to bias the cathode electrode, and a field emission current control unit configured to convert the filament current to generate an output voltage to be provided to a gate electrode of the field electron emission type X-ray generator and convert the filament current to fix, to a specific level, a level of an emission current flowing through the cathode electrode.
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公开(公告)号：US10008358B2
公开(公告)日：2018-06-26
申请号：US15229063
申请日：2016-08-04
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: H01J35/06 , G21K1/02 , H01J35/065 , H01J35/16 , H01J2201/30469 , H01J2235/068 , H01J2235/166
Abstract: Disclosed is an X-ray source, including: a cathode including a shielding channel through which an X-ray passes; emitters formed on an upper surface of the cathode, and arranged around the shielding channel; an anode positioned so as to face the cathode, and including an anode target in which an E-beam is focused; and a gate electrode positioned between the cathode and the anode, and including gate holes at positions corresponding to those of the emitters.
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公开(公告)号：US09941091B2
公开(公告)日：2018-04-10
申请号：US15074859
申请日：2016-03-18
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: H01J35/065 , H01J35/08
Abstract: An X-ray tube includes a cathode including an emitter emitting an electron beam, an anode at which a target material is disposed, the target material emitting an X-ray by colliding with the electron beam, and an insulating spacer isolating the anode, wherein the cathode or the anode is disposed between the emitter and the insulating spacer.
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20.发明授权Multi-electrode field emission device having single power source and method of driving same 有权具有单个电源的多电极场发射装置及其驱动方法公开(公告)号：US09351350B2
公开(公告)日：2016-05-24
申请号：US14283755
申请日：2014-05-21
Inventor： Jin-Woo Jeong , Yoon-Ho Song , Jae-Woo Kim , Jun-Tae Kang
Abstract: A field emission device and a method of driving the multi-electrode field emission device having a single driving power source are disclosed. The field emission device includes a cathode electrode, one or more gate electrodes, a voltage division unit, and a power source unit. The cathode electrode is figured such that at least one emitter is formed thereon. The gate electrodes are disposed between an anode electrode and the cathode electrode, and each have one or more openings through which electrons emitted from the emitter can pass. The voltage division unit has one or more divider resistors, and divides a voltage applied from the power source unit using the divider resistors and then applies partial voltages to the one or more gate electrodes. The power source unit includes a single power source, and applies the voltage to the voltage division unit.
Abstract translation: 公开了一种场发射器件和驱动具有单个驱动电源的多电极场致发射器件的方法。 场致发射器件包括阴极电极，一个或多个栅电极，分压单元和电源单元。 阴极被设计成使得至少一个发射极形成在其上。 栅电极设置在阳极电极和阴极电极之间，并且各自具有一个或多个开口，通过该开口从发射体发射的电子可以通过。 分压单元具有一个或多个分压电阻器，并且使用分压电阻器分压从电源单元施加的电压，然后将一部分电压施加到一个或多个栅电极。 电源单元包括单个电源，并将电压施加到分压单元。
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