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    THERMIONIC EMISSION DEVICE AND METHOD FOR MAKING THE SAME
    1.
    发明申请
    THERMIONIC EMISSION DEVICE AND METHOD FOR MAKING THE SAME 有权

    公开(公告)号：US20210217572A1

    公开(公告)日：2021-07-15

    申请号：US17067734

    申请日：2020-10-11

    Applicant: Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

    Inventor： XIN-HE YANG ,  PENG LIU ,  KAI-LI JIANG ,  SHOU-SHAN FAN

    IPC: H01J9/04 ,  H01J1/144 ,  H01J1/304 ,  H01J1/146

    Abstract: A thermionic emission device comprises a first electrode, a second electrode, a single carbon nanotube, an insulating layer and a gate electrode. The gate electrode is located on a first surface of the insulating layer. The first electrode and the second electrode are located on a second surface of the insulating layer and spaced apart from each other. The carbon nanotube comprises a first end, a second end opposite to the first end, and a middle portion located between the first end and the second end. The first end of the carbon nanotube is electrically connected to the first electrode, and the second end of the carbon nanotube is electrically connected to the second electrode.

    Discharge lamp having a cathode and emitter assembly composed of tungsten and thorium oxide and joined through a carbide interface region
    2.
    发明授权
    Discharge lamp having a cathode and emitter assembly composed of tungsten and thorium oxide and joined through a carbide interface region 有权
    放电灯具有由钨和氧化钍构成的阴极和发射极组件，并通过碳化物界面区域连接

    公开(公告)号：US07586263B2

    公开(公告)日：2009-09-08

    申请号：US11693321

    申请日：2007-03-29

    Applicant: Shunichi Morimoto ,  Norihiro Inaoka ,  Yasuro Kikuchi

    Inventor： Shunichi Morimoto ,  Norihiro Inaoka ,  Yasuro Kikuchi

    IPC: H01J61/073 ,  H01J17/04 ,  H01J61/06 ,  H01J1/144

    CPC classification number: H01J61/86 ,  H01J61/0735

    Abstract: A high pressure discharge lamp, in which an anode and a cathode are disposed opposite each other in a bulb, achieves a long service life due to thorium (Th) being stably supplied to the cathode tip for a long time after lamp operation has been commence since the formation of the flicker phenomenon is suppressed over a long time due to the cathode being made of tungsten which contains thorium oxide on a surface space from the cathode tip, a carbide layer of tungsten carbide is formed and the cathode being bordered by an emitter containing body of tungsten which contains thorium dioxide, and a carbide layer of tungsten carbide being formed at least in a region bordering the cathode.

    Abstract translation: 其中阳极和阴极彼此相对设置在灯泡中的高压放电灯由于在灯操作已经开始之后长时间稳定地供应到阴极尖端的钍（Th），其使用寿命长 由于阴极由阴极构成的表面空间中含有氧化钍的钨由于阴极被长时间抑制而形成闪烁现象，所以形成碳化钨的碳化物层，阴极由发射极 含有二氧化钍的含钨体和至少在与阴极接壤的区域中形成碳化钨的碳化物层。

    Cathode for electron tube
    3.
    发明授权
    Cathode for electron tube 失效
    电子管阴极

    公开(公告)号：US5977699A

    公开(公告)日：1999-11-02

    申请号：US5007

    申请日：1998-01-09

    Applicant: Kyu-nam Joo ,  Jong-seo Choi ,  Soo-chan Lee ,  Deuk-il Park

    Inventor： Kyu-nam Joo ,  Jong-seo Choi ,  Soo-chan Lee ,  Deuk-il Park

    IPC: H01J1/14 ,  H01J1/13 ,  H01J1/144 ,  H01J1/20 ,  H01J1/26

    CPC classification number: H01J1/144

    Abstract: A cathode for an electron tube, includes a base metal having nickel as a main component, and an electron emitting material layer containing an alkaline earth metal oxide having barium oxide as a main component, wherein a metal layer having zirconium as a main component is located between the base metal and the electron emitting material layer. The cathode has an excellent initial electron emitting characteristic and can emit a large quantity of electrons for a long time. Therefore, the cathode is suitable for a larger and higher-definition CRT.

    Abstract translation: 电子管的阴极包括以镍为主要成分的母材和含有以氧化钡为主要成分的碱土金属氧化物的电子发射材料层，其中以锆为主要成分的金属层位于 在贱金属和电子发射材料层之间。 阴极具有优异的初始电子发射特性，并且可以长时间发射大量的电子。 因此，阴极适用于更大和更高清晰度的CRT。

    Electron beam device, cold field emitter, and method for regeneration of a cold field emitter
    4.
    发明授权
    Electron beam device, cold field emitter, and method for regeneration of a cold field emitter 有权

    公开(公告)号：US09847208B1

    公开(公告)日：2017-12-19

    申请号：US15233092

    申请日：2016-08-10

    Applicant: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH

    Inventor： Pavel Adamec

    IPC: H01J1/144 ,  H01J1/15 ,  H01J37/073 ,  H01J37/147 ,  H01J37/244 ,  H01J37/28

    CPC classification number: H01J37/073 ,  H01J37/147 ,  H01J37/244 ,  H01J37/28 ,  H01J2203/0204

    Abstract: The present disclosure provides an electron beam device (500) for inspecting a sample (10) with an electron beam, comprising an electron beam source comprising a cold field emitter (100) for emitting an electron beam, electron beam optics for directing and focusing the electron beam onto the sample (10), and a detector device (540) for detecting secondary charged particles generated by impingement of the electron beam on the sample (10). The cold field emitter (100) includes an emitter tip (110), a base arrangement (120) configured for supporting the emitter tip (110) and comprising a first base element (122) and a second base element (124), and a filament (130) having at least a first filament portion (132) and a second filament portion (134) attaching the emitter tip (110) to the base arrangement (120), wherein the first filament portion (132) extends between the emitter tip (110) and the first base element (122) and the second filament portion (134) extends between the emitter tip (110) and the second base element (124), wherein a length (L) of each of the first filament portion (132) and the second filament portion (134) is 4 mm or less, and wherein a diameter of a cross-section of each of the first filament portion (132) and the second filament portion (134) is 0.13 mm or less.

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