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公开(公告)号：US20230036147A1
公开(公告)日：2023-02-02
申请号：US17872782
申请日：2022-07-25
Inventor： Yoon-Ho SONG , Jun-Tae Kang , Jae-Woo Kim , Sora Park , Jin-Woo Jeong
Abstract: Provided is an X-ray tube including a cathode structure, an anode spaced apart from the cathode structure, a spacer structure disposed between the cathode structure and the anode, and an external power supply connected to each of the cathode structure, the anode, and the spacer structure. Here, the spacer structure includes a first spacer disposed adjacent to the cathode structure and a second spacer disposed on the first spacer and disposed adjacent to the anode. The first spacer includes a first portion adjacent to the cathode structure and a second portion adjacent to a contact point of the first spacer and the second spacer. The second spacer includes a third portion adjacent to the contact point and a fourth portion adjacent to the anode. Each of the first portion and the third portion has a volume resistivity less than that of the second portion.
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公开(公告)号：US10438764B2
公开(公告)日：2019-10-08
申请号：US15835073
申请日：2017-12-07
Inventor： Young Chul Choi , Yoon-Ho Song , Hyo Jin Jeon , Jun Tae Kang , Sora Park , Jeong Woong Lee , Eunsol Go , Min-Sik Shin , Jae-Woo Kim , Jin-Woo Jeong , Ji-Hwan Yeon , Sunghee Kim
Abstract: Disclosed is a field emission apparatus. The apparatus comprises a cathode electrode and an anode electrode spaced apart from each other, an emitter on the cathode electrode, a gate electrode between the cathode and anode electrodes and including at least one gate aperture overlapping the emitter, and an electron transmissive sheet on the gate electrode and including a plurality of fine openings overlapping the gate aperture.
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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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Patent Agency Ranking
公开(公告)号：US11335530B2
公开(公告)日：2022-05-17
申请号：US17093896
申请日：2020-11-10
Inventor： Sora Park
Abstract: An electron emission structure according to embodiments of the inventive concept includes a cathode electrode and electron emission yarns each having a yarn shape and disposed in the cathode electrode. Here, the cathode electrode includes a plurality of first conductive panels spaced apart from each other in a first direction and at least one second conductive panel that crosses the first conductive panels in the first direction. Also, each of the first conductive panels includes at least one groove at an upper portion thereof. The second conductive panel is inserted to the groove of each of the first conductive panels. Each of the electron emission yarns is disposed between the first conductive panels. Each of the electron emission yarns contacts the second conductive panel. Each of the electron emission yarns is mechanically fixed and vertically aligned as well as arranged regularly by the second conductive panel and one pair of adjacent first conductive panels of the first conductive panels.
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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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公开(公告)号：US12125661B2
公开(公告)日：2024-10-22
申请号：US17872782
申请日：2022-07-25
Inventor： Yoon-Ho Song , Jun-Tae Kang , Jae-Woo Kim , Sora Park , Jin-Woo Jeong
CPC classification number: H01J35/064 , H01J35/045 , H01J35/10
Abstract: Provided is an X-ray tube including a cathode structure, an anode spaced apart from the cathode structure, a spacer structure disposed between the cathode structure and the anode, and an external power supply connected to each of the cathode structure, the anode, and the spacer structure. Here, the spacer structure includes a first spacer disposed adjacent to the cathode structure and a second spacer disposed on the first spacer and disposed adjacent to the anode. The first spacer includes a first portion adjacent to the cathode structure and a second portion adjacent to a contact point of the first spacer and the second spacer. The second spacer includes a third portion adjacent to the contact point and a fourth portion adjacent to the anode. Each of the first portion and the third portion has a volume resistivity less than that of the second portion.
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公开(公告)号：US11894224B2
公开(公告)日：2024-02-06
申请号：US17834463
申请日：2022-06-07
Inventor： 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: H01J5/04
CPC classification number: H01J5/04
Abstract: 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：US10580612B2
公开(公告)日：2020-03-03
申请号：US15861554
申请日：2018-01-03
Inventor： Sora Park , Yoon-Ho Song , Jin-Woo Jeong , Jun Tae Kang
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.
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