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公开(公告)号：US20200251299A1
公开(公告)日：2020-08-06
申请号：US16777547
申请日：2020-01-30
Inventor： Jin-Woo JEONG
Abstract: Provided is a field emission device. The field emission device includes a cathode electrode having a first surface and a second surface facing the first surface, the cathode electrode including grooves that are recessed from the first surface toward the second surface, the grooves extending in a first direction parallel to the first surface and emitter structures which are disposed within the grooves and each of which includes a core extending in the first direction and a conductive wire configured to surround the core. The grooves may be arranged in a second direction crossing the first direction, and the emitter structures may be disposed at vertical levels different from each other.
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公开(公告)号：US20200227228A1
公开(公告)日：2020-07-16
申请号：US16734632
申请日：2020-01-06
Inventor： Jin-Woo JEONG
Abstract: An embodiment of the inventive concept provides an X-ray tube including a chamber having a hollow pillar shape using a first axis as a central axis, a cathode electrode disposed on a bottom surface of the chamber, an emitter provided at a position at which the cathode electrode meets the first axis, an anode electrode including a through-hole using the first axis as a central axis and a target layer inclined to the first axis, a gate electrode disposed between the cathode electrode and the anode electrode and having an opening exposing the emitter, a focusing electrode disposed between the gate electrode and the anode electrode, a window spaced apart from the target layer of the anode electrode, and a window electrode provided on a top surface of the chamber to fix a side surface of the window. Here, the window electrode is grounded.
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Patent Agency Ranking
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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公开(公告)号：US20170053771A1
公开(公告)日：2017-02-23
申请号：US15230276
申请日：2016-08-05
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.
Abstract translation: 公开了一种X射线源，包括：阴极; 阳极，其位于阴极上以面对阴极; 在阴极上形成的发射体; 位于阴极和阳极之间的栅电极，并且在对应于发射器的位置处包括开口; 形成在栅极和阳极之间的绝缘间隔物; 以及形成在所述绝缘间隔物的内壁上的涂层，并且包括具有比所述绝缘间隔物的二次电子发射系数低的二次电子发射系数的材料。
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公开(公告)号：US20160307725A1
公开(公告)日：2016-10-20
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.
Abstract translation: X射线管包括阴极，其包括发射电子束的发射体，设置有靶材料的阳极，与电子束碰撞而发射X射线的靶材料和隔离阳极的绝缘隔离物，其中 阴极或阳极设置在发射极和绝缘间隔物之间。
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