公开(公告)号：US20090284124A1

公开(公告)日：2009-11-19

申请号：US12427865

申请日：2009-04-22

Applicant: WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

Inventor： WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

IPC: H01J1/14

CPC classification number: H01J1/14 ,  H01J1/144 ,  H01J1/146 ,  H01J1/148 ,  H01J35/06 ,  H01J35/305

Abstract: A cathode has a thermionic emitter composed of a material that emits electrons upon being heated, and an emission layer, composed of a material that has a lower electron work function than the material of the thermionic emitter, is applied on said thermionic emitter so as to at least partially cover the thermionic emitter. Such a cathode has a high electron emission with simultaneously improved focusing and a longer lifespan.

Abstract translation: 阴极具有由在加热时发射电子的材料构成的热离子发射体，并且将由具有比热电子发射体的材料更低的电子功函数的材料构成的发射层施加到所述热离子发射极上，以便 至少部分地覆盖热离子发射器。 这种阴极具有高电子发射，同时改善了聚焦并且寿命更长。

公开(公告)号：US20020167258A1

公开(公告)日：2002-11-14

申请号：US10113280

申请日：2002-04-01

Inventor： Ronald Dittrich ,  Erich Hell ,  Markus Schild

IPC: H01K001/04 ,  H01J019/06

CPC classification number: H01J35/305 ,  H01J1/146 ,  H01J35/06

Abstract: A thermionic emitter for use in an X-ray tube with a rotating cathode, particularly in rotating bulb X-ray tubes, is composed of an alloy of a refractory metal, such as tungsten, with an additive of at least 20 ppm potassium. This emitter material avoids deterioration of the emitter due to grain creep.

Abstract translation: 用于具有旋转阴极，特别是旋转灯泡X射线管的X射线管的热离子发射器由难熔金属如钨的合金与至少20ppm钾的添加剂组成。 该发射极材料避免了由于晶粒蠕变引起的发射极的劣化。

公开(公告)号：US20020153819A1

公开(公告)日：2002-10-24

申请号：US10077762

申请日：2002-02-20

Inventor： Dong-Kyun Seo ,  Jong-Seo Choi ,  Kyoung-Cheon Son ,  Kyu-Nam Joo ,  Sung-Hwan Moon ,  Yoon-Chang Kim ,  Seung-Kwon Han ,  Bu-Chul Sin

IPC: H01J001/20

CPC classification number: H01J1/146 ,  H01J1/20

Abstract: A metal cathode for an electron-emission device, and an indirectly heated cathode assembly employing the metal cathode where the metal cathode is formed of a quaternary alloy including 0.1-20% by weight barium (Ba), 0.1-20% by weight a metallic mobilizer facilitating Ba diffusion, a metal with a difference in atomic radius of at least 0.4 Angstrom from the atomic radius of platinum (Pt) or palladium (Pd), the metal being in the range of 0.01 to 30% by weight, and a balance of at least one of Pt and Pd. The metal cathode has a low operating temperature due to its reduced work function with improved current emission capability. The metal cathode can be used for a longer lifetime at high current density. Therefore, the metal cathode can be used effectively in electron-beam devices, such as a Braun tube or picture tube, satisfying larger size, longer life span, high definition, and high luminance requirements of the devices.

Abstract translation: 用于电子发射器件的金属阴极和使用金属阴极的间接加热的阴极组件，其中金属阴极由包含0.1-20重量％的钡（Ba），0.1-20重量％的金属 促进Ba扩散的迁移剂，原子半径不同于铂（Pt）或钯（Pd）的原子半径至少0.4埃的金属，金属在0.01至30重量％的范围内，余量 的Pt和Pd中的至少一种。 金属阴极具有低的工作温度，由于功率降低，电流发射能力得到改善。 金属阴极可以在高电流密度下使用更长的寿命。 因此，金属阴极可以有效地用于诸如布朗管或显像管的电子束器件中，满足更大尺寸，更长寿命，高清晰度和高亮度要求的器件。

公开(公告)号：US6133679A

公开(公告)日：2000-10-17

申请号：US169980

申请日：1998-10-13

Applicant: Yoshinori Terui ,  Katsuyoshi Tsunoda

Inventor： Yoshinori Terui ,  Katsuyoshi Tsunoda

IPC: H01J37/073 ,  H01J1/146 ,  H01J1/304 ,  H01J1/14

CPC classification number: H01J1/304 ,  H01J1/146 ,  H01J2201/317 ,  H01J2237/063 ,  H01J2237/06316

Abstract: A thermal field emission cathode comprising a tungsten single crystal having an axis direction of and a coating layer of zirconium and oxygen formed thereon, wherein a source for supplying zirconium and oxygen contains an element capable of forming cubic or tetragonal zirconium oxide at an operation temperature of the thermal field emission cathode.

Abstract translation: 一种包含轴方向<100的钨单晶和形成在其上的锆和氧的涂层的热场发射阴极，其中用于供应锆和氧的源含有能够形成立方晶或四方晶氧化锆的元素， 热场发射阴极的工作温度。

公开(公告)号：US5646482A

公开(公告)日：1997-07-08

申请号：US454540

申请日：1995-05-30

Applicant: Shigeo Suzuki ,  Hidenobu Shintaku ,  Taku Watanabe ,  Mitsuo Asabe ,  Kazuo Takahashi ,  Yoshiro Abe ,  Hiroki Kono ,  Kazunori Hirao

Inventor： Shigeo Suzuki ,  Hidenobu Shintaku ,  Taku Watanabe ,  Mitsuo Asabe ,  Kazuo Takahashi ,  Yoshiro Abe ,  Hiroki Kono ,  Kazunori Hirao

IPC: H01J1/146 ,  H01J9/02 ,  H01J17/06 ,  H01J17/49 ,  H01J1/14 ,  H01J19/06

CPC classification number: H01J1/146 ,  H01J17/066 ,  H01J17/492 ,  H01J9/02

Abstract: In a DC gas discharge type image display apparatus including: a front glass substrate; a rear glass substrate facing the front glass substrate, interposing a discharge gas therebetween; a set of anodes including a plurality of line electrodes formed on the rear glass substrate; a set of cathodes including a plurality of line electrodes placed on the front glass substrate so as to perpendicularly cross the set of anodes; and a plurality of discharge cells, each being provided so as to correspond to each of the cross points of the set of anodes and the set of cathodes, the apparatus being driven in a refresh driving method or a memory driving method, the set of cathodes are formed by a spraying method. The cathodes are made from aluminum, nickel, an aluminum alloy or a nickel alloy. The discharge gas is a mixed gas of He and Xe.

Abstract translation: 一种直流气体放电型图像显示装置，包括：前玻璃基板; 面向前玻璃基板的后玻璃基板，在其间插入放电气体; 一组阳极，包括形成在后玻璃基板上的多个线电极; 一组阴极，包括放置在前玻璃基板上的多个线电极，以便垂直地穿过该组阳极; 以及多个放电单元，每个放电单元被设置为对应于所述一组阳极和所述一组阴极中的每个交叉点，所述设备以刷新驱动方法或存储器驱动方法驱动，所述阴极组 通过喷雾法形成。 阴极由铝，镍，铝合金或镍合金制成。 放电气体是He和Xe的混合气体。

公开(公告)号：US5580291A

公开(公告)日：1996-12-03

申请号：US493737

申请日：1995-06-22

Applicant: Thomas Redel ,  Clemens Fiebiger

Inventor： Thomas Redel ,  Clemens Fiebiger

IPC: C23C14/24 ,  C23C14/14 ,  C23C14/58 ,  H01J1/14 ,  H01J1/146 ,  H01J9/04 ,  H01J35/06

CPC classification number: C23C14/5806 ,  C23C14/14 ,  C23C14/58 ,  C23C14/5893 ,  H01J1/146 ,  H01J35/06 ,  H01J9/042

Abstract: In a method for manufacturing a glow cathode for an electron tube, a layer of an alloy, such as iridium-lanthanum (Ir.sub.2 La), is produced on a substrate by coating the substrate, such as in a number of layers, with the components of the alloy by deposition from the vapor phase, such that the components of the alloy are present in the stoichiometrically correct ratio on the substrate, and in that the substrate is heated for a time duration adequate for alloy formation to a temperature that is lower than the melting temperature of the phase of the alloy having the lowest melting point.

Abstract translation: 在制造电子管用辉光阴极的方法中，通过将基板例如多层涂布，在基板上制造铱 - 镧（Ir2La）等合金层，其成分为 该合金通过从气相沉积，使得合金的组分以化学计量正确的比率存在于基底上，并且将基底加热足够的时间以使合金形成至低于 具有最低熔点的合金的相的熔融温度。

公开(公告)号：US3697321A

公开(公告)日：1972-10-10

申请号：US3697321D

申请日：1968-06-20

Applicant: SIEMENS AG

Inventor： ECKERT GEORG ,  CIRIACK GUNTHER

IPC: H01J1/146 ,  H01J9/04 ,  B44D1/18 ,  H01J1/14

CPC classification number: H01J1/146 ,  H01J9/042 ,  Y10S428/936

Abstract: A THORIUM FILM THERMIONIC CATHODE IN ELECTRON DISCHARGE DEVICES AND METHOD OF MANUFACTURING THE SAME WHEREIN A HIGH MELTING METAL CARRIER, SUCH AS TUNGSTEN OR TUNGSTEN ALLOY, CONTAMINATED WITH THORIUM OXIDE IS PROVIDED WITH A COATING CONTAINING AN INNER LAYER OF TUNGSTEN CARBIDE AND AN OUTER LAYER OF A HIGH MELTING METAL HAVING MIGRATINAL PROPERTIES AND FUNCTIONING AS AN EMISSION BASE FOR THORIUM, SUCH AS OSMIUM OR RHENIUM.

公开(公告)号：US2204391A

公开(公告)日：1940-06-11

申请号：US27090939

申请日：1939-04-29

Applicant: RCA CORP

Inventor： ALLEN VICTOR O

IPC: H01J1/146 ,  H01J9/04

CPC classification number: H01J9/042 ,  H01J1/146 ,  Y10T428/2958

公开(公告)号：US2192491A

公开(公告)日：1940-03-05

申请号：US25404539

申请日：1939-02-01

Applicant: RCA CORP

Inventor： GIDEON WIDELL EMIL

IPC: H01J1/146

CPC classification number: H01J1/146

公开(公告)号：WO2016130580A1

公开(公告)日：2016-08-18

申请号：PCT/US2016/017198

申请日：2016-02-09

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： LUHMANN, Neville, Jr. ,  SOEKLAND, Gordon ,  GAMZINA, Diana ,  LI, Na

IPC: H01J1/14 ,  H01J1/28 ,  H01J1/142

CPC classification number: H01J1/146 ,  C01G41/006 ,  C01P2004/64 ,  C01P2006/40 ,  C04B35/50 ,  C04B35/624 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/6268 ,  C04B35/64 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/326 ,  C04B2235/5454 ,  C04B2235/96 ,  H01J1/142 ,  H01J9/04

Abstract: Methods for fabricating refractory metal scandate nanocomposite powders with homogeneous microstructured refractory metal grains and a uniform nanosized dispersion of scandia are provided. The powders prepared by the sol-gel methods have a spherical morphology, a narrow distribution of particle sizes and a very uniform dispersion of nanosized scandia particles joined to the tungsten grains. The powder particle sizes can range from nanometers to micrometers. The powders can be pressed into porous cathode structures that can be impregnated with emissive materials to produce high current density and long life cathodes for high-power terahertz vacuum electron devices. The sol-gel fabrication methods allow control over the materials, particle size, particle composition and pore size and distribution of the cathode structure by manipulation of the process parameters.

Abstract translation: 提供了具有均质微结构难熔金属颗粒的均匀纳米尺度分散体的难熔金属屑状纳米复合材料粉末的制备方法。 通过溶胶 - 凝胶法制备的粉末具有球形形态，粒度分布窄，并且与钨颗粒接合的纳米尺度的颗粒分散体非常均匀。 粉末粒度范围可以从纳米到微米。 粉末可以压制成可以用发射材料浸渍的多孔阴极结构，以产生高功率太赫兹真空电子器件的高电流密度和长寿命的阴极。 溶胶 - 凝胶制造方法允许通过操纵工艺参数来控制材料，粒度，颗粒组成和孔径以及阴极结构的分布。