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    Cathode assembly and method of manufacturing the same
    22.
    发明公开
    Cathode assembly and method of manufacturing the same 失效
    Kathodenvorrichtung und Verfahren zur Herstellung derselben。

    公开(公告)号：EP0616353A3

    公开(公告)日：1994-11-09

    申请号：EP94104130.3

    申请日：1994-03-16

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Hara, Akihito, c/o Intellectual Property Division ,  Higuchi, Toshiharu, c/o Intellectual Property Div. ,  Yakabe, Toru, c/o Intellectual Property Division ,  Kanda, Shigeo, c/o Intellectual Property Division ,  Yamamoto, Eiji, c/o Intellectual Property Division

    IPC: H01J1/26 ,  H01J9/04

    CPC classification number: H01J1/26 ,  H01J9/04 ,  H01J2209/012

    Abstract: In a method of forming a coating on an electron emitting cathode, in which a black coating (23) is formed on the inner surface of a cathode sleeve (15) constituting the electron emitting cathode, the cathode sleeve (15) is filled with a suspension as a coating material, and a porous absorbent member is brought into contact with or near an opening portion of the cathode sleeve at the same time or after the cathode sleeve (15) is filled with the suspension, thereby causing the porous absorbent member to absorb an unnecessary portion of the suspension. Thereafter, the cathode sleeve (15) to which the coating material is adhered is heat-treated. As a result, a black coating (23) having a uniform thickness is formed, on the inner surface of the cathode sleeve, as a sintered layer obtained by mixing tungsten having an average particle diameter in a range of 0.5 µm (inclusive) to 2 µm (inclusive) with alumina having an average particle diameter in a range of 0.1 µm (inclusive) to 1 µm (exclusive) at a weight ratio of the tungsten to the alumina in a range of (90 : 10) to (65 : 35).

    Abstract translation: 在构成电子发射阴极的阴极套筒（15）的内表面上形成黑色涂层（23）的电子发射阴极上形成涂层的方法中，阴极套筒（15）填充有 悬浮液作为涂层材料，并且多孔吸收体在阴极套筒的同时或在阴极套筒（15）填充悬浮液之后与开口部分接触或接近阴极套管的开口部分，从而使多孔吸收体成为 吸收悬浮液的不必要部分。 此后，将涂覆有材料的阴极套筒（15）进行热处理。 结果，在阴极套筒的内表面上形成具有均匀厚度的黑色涂层（23）作为通过将平均粒径在0.5μm（含）范围内的钨与将 2μm（含）平均粒径在0.1μm以上且1μm以上的氧化铝（不含），钨与氧化铝的重量比在（90:10）〜 （65：35）。

    Electron tube or gun having an oxide cathode
    23.
    发明公开
    Electron tube or gun having an oxide cathode 失效
    电子管或枪具有氧化物阴极

    公开(公告)号：EP0183488A3

    公开(公告)日：1988-07-06

    申请号：EP85308473

    申请日：1985-11-21

    Applicant: RCA LICENSING CORPORATION

    Inventor： Chiang, Kenneth Kuang-Tsan

    IPC: H01J01/14 ,  H01J01/26

    CPC classification number: H01J1/26 ,  H01J1/142

    Abstract: In a vacuum electron tube (11), an oxide cathode (15) comprises a metal substrate (18), means (20) for heating said substrate to its operating temperature, and a layer of alkaline-earth-metal oxide (19) on the substrate. The substrate is essentially free from silicon and contains operative concentrations, preferably greater than 1.0 weight %, of chromium metal, for progressively migrating into the oxide layer and reducing the oxide to yield alkaline-earth-metal.

    ELECTRON GUN AND ELECTRON BEAM DEVICE
    25.
    发明公开
    ELECTRON GUN AND ELECTRON BEAM DEVICE 有权
    电子枪和电子束装置

    公开(公告)号：EP2680294A1

    公开(公告)日：2014-01-01

    申请号：EP11859058.7

    申请日：2011-02-25

    Applicant: Param Corporation

    Inventor： YASUDA, Hiroshi

    IPC: H01J1/13 ,  H01J1/26 ,  H01J1/304 ,  H01J37/06 ,  H01L21/027

    CPC classification number: H01J29/485 ,  B82Y10/00 ,  B82Y40/00 ,  H01J1/148 ,  H01J1/26 ,  H01J37/065 ,  H01J37/07 ,  H01J37/075 ,  H01J37/26 ,  H01J37/3174

    Abstract: An electron gun cathode (104) is column shaped, and emits electrons by being heated. A holder (103), which covers the bottom and sides of the electron gun cathode, has electrical conductivity and holds the electron gun cathode, and is composed of a material that does not easily react with the electron gun cathode when in a heated state, is provided. The tip of the electron gun cathode (104) protrudes from the holder (103) so as to be exposed, and electrons are emitted from the tip toward the front by applying an electric field to the tip.

    Abstract translation: 电子枪阴极（104）是柱状的，并且通过加热而发射电子。 覆盖电子枪阴极底部和侧面的保持器（103）具有导电性并保持电子枪阴极，并且由在加热状态下不易与电子枪阴极反应的材料构成， 被提供。 电子枪阴极（104）的前端从支架（103）突出而露出，通过对前端施加电场，电子从前端向前方射出。

    Cathode subassembly and color crt equipped therewith
    26.
    发明公开
    Cathode subassembly and color crt equipped therewith 审中-公开
    阴极组件和彩色阴极与这种组件射线管

    公开(公告)号：EP1063668A3

    公开(公告)日：2004-09-08

    申请号：EP00401786.9

    申请日：2000-06-22

    Applicant: NEC Electronics Corporation

    Inventor： Sugimura, Toshikazu ,  Narita, Maki

    IPC: H01J1/142 ,  H01J1/28 ,  H01J1/26

    CPC classification number: H01J1/26 ,  H01J1/142

    Abstract: A cathode subassembly for color CRTs is provided, which exhibits scarcely the degradation of electron emission capability for at least ordinary lifetime of color CRTs even at a high current density greater than 1 A/cm 2 while it has an equivalent activation time and an equivalent operating temperature to those of former oxide cathodes. The cathode subassembly is comprises (a) a porous cathode pellet (11) formed by a sintered body containing Ni, scandium oxide (Sc 2 O 3 ), and an electron-emissive material; the body being made by sintering a mixture of a Ni powder, a scandium oxide (Sc 2 O 3 ) powder, and an electron-emissive material powder using a HIP process; the pellet having an electron emission surface; and (b) a pellet support (12) for supporting the pellet; the support having a part in contact with the pellet; the part being made of an alloy containing Ni as its main ingredient and at least one metal selected from the group consisting of chromium (Cr), tantalum (Ta), molybdenum (Mo), zirconium (Zr), tungsten (W), and cobalt (Co); the at least one metal selected from the group consisting of Cr, Ta, Mo, Zr, W, and Co serving as a reducing agent for the electron-emissive material. Preferably, the electron-emissive material is a carbonate generated by co-precipitation of Ba, Sr, and Ca.

    CATHODE FOR ELECTRONIC TUBE
    28.
    发明公开
    CATHODE FOR ELECTRONIC TUBE 失效
    KATHODEFÜREINEELEKTRONENRÖHRE

    公开(公告)号：EP0869527A1

    公开(公告)日：1998-10-07

    申请号：EP97925304.4

    申请日：1997-06-10

    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

    Inventor： OHIRA, Takuya-Mitsubishi Denki Kabushiki Kaisha ,  SAITO, Masato-Mitsubishi Denki Kabushiki Kaisha ,  TERAMOTO, Hiroyuki-Mitsubishi Denki Kabushiki Ka.

    IPC: H01J1/26 ,  H01J1/14

    CPC classification number: H01J1/142 ,  H01J1/26

    Abstract: There were problems with the conventional cathode for electronic tubes such as: metals that composing the substrate were subjected to heat deformation resulting in a relatively large drift of cutoff voltage. It is the object of the present invention to solve this problem by diminishing the heat deformation of the substrate to obtain a cathode with a small drift of cutoff voltage.
    Heat expansion coefficients can be made uniform while metals in the metal layer are prevented from diffusing into the substrate by incorporating the same metals as in the metal layer on the substrate into the metals composing the substrate, thereby suppressing deformation of the substrate.

    Abstract translation: 对于电子管的常规阴极存在以下问题：构成基板的金属受到热变形，导致截止电压的漂移相对较大。 本发明的目的是通过减小基板的热变形以获得具有小的截止电压漂移的阴极来解决这个问题。 通过将与基板中的金属层中相同的金属掺入构成基板的金属中，可以使金属层中的金属扩散到基板中，从而抑制基板的变形，可以使热膨胀系数均匀。

    Low power impregnated cathode of cathode-ray tube
    29.
    发明公开
    Low power impregnated cathode of cathode-ray tube 失效
    印度尼西亚的Kathodenstrahlröhre

    公开(公告)号：EP0848405A2

    公开(公告)日：1998-06-17

    申请号：EP97309981.5

    申请日：1997-12-11

    Applicant: LG ELECTRONICS INC.

    Inventor： Lee, John Hwan

    IPC: H01J1/28

    CPC classification number: H01J1/26 ,  H01J1/28

    Abstract: A low power impregnated cathode consisting of a pallet, a cup, an inner sleeve, a tap, and an outer sleeve, is characterized in that the diameter of the pellet is less than at least one and half times of the thickness of the pellet, and is characterized in that an outer diameter of the bottom part of the outer sleeve is larger than an outer diameter of the top part thereof.

    Abstract translation: 由托盘，杯子，内套筒，龙头和外套筒组成的低功率浸渍阴极的特征在于，颗粒的直径小于颗粒厚度的至少一倍半， 其特征在于，外套筒的底部的外径大于其顶部的外径。

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