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公开(公告)号：US20220399176A1
公开(公告)日：2022-12-15
申请号：US17834463
申请日：2022-06-07
发明人： Yoon-Ho SONG , Jeong-Woong LEE , Jun-Tae KANG , Seong Jun KIM , Jae-Woo KIM , Sora PARK , Ki Nam YUN , Jin-Woo JEONG , Sunghoon CHOI
IPC分类号： H01J5/04
摘要： Provided is a high voltage driving device including a housing and a cathode, an anode, and an insulation structure, which are disposed in the housing. Here, the cathode and the anode are spaced apart from each other with the insulation structure therebetween. Also, the insulation structure includes a first solid insulator disposed adjacent to the cathode and a second solid insulator disposed adjacent to the anode. Also, the first solid insulator has first volumetric resistivity less than second volumetric resistivity of the second solid insulator, and the first solid insulator contacts the cathode.
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公开(公告)号：US20180213632A1
公开(公告)日：2018-07-26
申请号：US15879323
申请日：2018-01-24
发明人： Sora PARK , Yoon-Ho SONG , Jin-Woo JEONG
CPC分类号： H05G1/22 , H01J35/08 , H01J35/12 , H01J2235/081 , H01J2235/1225 , H05G1/52 , H05G1/54
摘要： 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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公开(公告)号：US20170347438A1
公开(公告)日：2017-11-30
申请号：US15459661
申请日：2017-03-15
发明人： Jun Tae KANG , Yoon-Ho SONG , Jin-Woo JEONG
CPC分类号： H05G1/34 , H01J35/065 , H05G1/10 , H05G1/32
摘要： 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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4.发明申请MULTI-ELECTRODE FIELD EMISSION DEVICE HAVING SINGLE POWER SOURCE AND METHOD OF DRIVING SAME 有权具有单电源的多电场场发射装置及其驱动方法公开(公告)号：US20140346975A1
公开(公告)日：2014-11-27
申请号：US14283755
申请日：2014-05-21
发明人： Jin-Woo JEONG , Yoon-Ho SONG , Jae-Woo KIM , Jun-Tae KANG
IPC分类号： H05B33/08
摘要： 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.
摘要翻译： 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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公开(公告)号：US20210244375A1
公开(公告)日：2021-08-12
申请号：US17172549
申请日：2021-02-10
发明人： Jin-Woo JEONG , Yoon-Ho SONG
摘要： 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 external subject 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：US20180190466A1
公开(公告)日：2018-07-05
申请号：US15861554
申请日：2018-01-03
发明人： Sora PARK , Yoon-Ho SONG , Jin-Woo JEONG , Jun Tae KANG
CPC分类号： H01J35/065 , H01J19/38 , H01J35/14 , H01J2235/06
摘要： 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.
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公开(公告)号：US20170048955A1
公开(公告)日：2017-02-16
申请号：US15229063
申请日：2016-08-04
发明人： Jin-Woo JEONG , Yoon-Ho SONG
CPC分类号： H01J35/06 , G21K1/02 , H01J35/065 , H01J35/16 , H01J2201/30469 , H01J2235/068 , H01J2235/166
摘要： 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.
摘要翻译： 公开了一种X射线源，包括：包括X射线通过的屏蔽通道的阴极; 形成在阴极的上表面上并且围绕屏蔽通道布置的发射器; 阳极被定位为面对阴极，并且包括其中电子束聚焦的阳极靶; 以及位于阴极和阳极之间的栅电极，并且在与发射体的位置相对应的位置处包括栅极孔。
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公开(公告)号：US20190304731A1
公开(公告)日：2019-10-03
申请号：US16430249
申请日：2019-06-03
发明人： Jin-Woo JEONG , Yoon-Ho SONG
摘要： 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：US20190214216A1
公开(公告)日：2019-07-11
申请号：US16358370
申请日：2019-03-19
发明人： Jin-Woo JEONG , Yoon-Ho SONG
CPC分类号： H01J35/065 , H01J35/045 , H01J35/16 , H01J2235/168
摘要： 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
发明人： Jin-Woo JEONG , Yoon-Ho SONG
摘要： 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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