公开(公告)号：US4897574A

公开(公告)日：1990-01-30

申请号：US105668

申请日：1987-10-05

申请人： Masato Saito ,  Keiji Fukuyama ,  Masako Ishida ,  Keiji Watanabe ,  Toyokazu Kamata ,  Kinjiro Sano ,  Hisao Nakanishi

发明人： Masato Saito ,  Keiji Fukuyama ,  Masako Ishida ,  Keiji Watanabe ,  Toyokazu Kamata ,  Kinjiro Sano ,  Hisao Nakanishi

IPC分类号： H01J1/14 ,  H01J1/15 ,  H01J61/067

CPC分类号： H01J1/14 ,  H01J1/15 ,  H01J61/0677

摘要： A hot cathode in a wire form is useful in a vacuum tube, a CRT or a fluorescent display tube is disclosed. The cathode is composed of a heat-resistant metal in a wire form that holds on it an electron-emitting metal material that is made of 0.2-20 wt % of a rear earth metal oxide in admixture with an alkaline earth metal oxide the balance of which contains at least barium oxide. The reduction of oxide barium to barium as a result of reaction with the cathode wire is so much retarded that an increased emission current will be produced from the cathode not only in its initial operation but also through out its operation.

公开(公告)号：US4745326A

公开(公告)日：1988-05-17

申请号：US940121

申请日：1986-12-10

申请人： Richard F. Greene ,  Richard E. Thomas

发明人： Richard F. Greene ,  Richard E. Thomas

IPC分类号： H01J1/28 ,  H01J9/04 ,  H01J23/06 ,  H01J1/14

CPC分类号： H01J23/06 ,  H01J1/28 ,  H01J9/04

摘要： A controlled porosity dispenser cathode and method of manufacture therefo using chemical vapor deposition and laser drilling, ion milling, or electron discharge machining for consistent and economical manufacturing a cathode with pores on the order of 0.2 to 2 .mu.m in diameter.

摘要翻译： 因此，可控制的孔隙分配器阴极及其制造方法使用化学气相沉积和激光钻孔，离子铣削或电子放电加工，以一致和经济地制造直径为0.2至2μm的孔的阴极。

公开(公告)号：US4737679A

公开(公告)日：1988-04-12

申请号：US826339

申请日：1986-02-05

申请人： Shigehiko Yamamoto ,  Sadanori Taguchi ,  Toshiyuki Aida ,  Isato Watanabe ,  Susumu Kawase

发明人： Shigehiko Yamamoto ,  Sadanori Taguchi ,  Toshiyuki Aida ,  Isato Watanabe ,  Susumu Kawase

IPC分类号： H01J1/14 ,  H01J1/28 ,  H01J19/06 ,  H01K1/04

CPC分类号： H01J1/28 ,  Y10T428/265

摘要： The present invention relates to an impregnated cathode produced by attaching at least two layered thin films, the thin films comprising an under layer consisting of a high melting point metal thin film composed of, for example, Os, Ru, Rh, Pd, Ir, Pt, Re, Mo, W, Ta, etc., and an over layer consisting of a high melting point metal layer which contains Sc.sub.2 O.sub.3 and which is placed over the layer, on the surface of the impregnated cathode pellet generated by impregnating a refractory porous base body with electron emissive materials. The invention relates also to an electron tube having this cathode. This cathode maintains a low work functional mono-layer stably for a long period of time on its surface.

摘要翻译： 本发明涉及通过附着至少两层薄膜而制造的浸渍阴极，该薄膜包括由例如由Os，Ru，Rh，Pd，Ir组成的高熔点金属薄膜构成的底层， Pt，Re，Mo，W，Ta等，以及由含有Sc 2 O 3的高熔点金属层构成的覆层，该层由放置在该层上的浸渍的阴极粒子的表面上， 基体与电子发射材料。 本发明还涉及具有该阴极的电子管。 该阴极在其表面上长时间稳定地保持低功函数单层。

公开(公告)号：US4636681A

公开(公告)日：1987-01-13

申请号：US219941

申请日：1980-12-24

申请人： Akira Misumi

发明人： Akira Misumi

IPC分类号： H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC分类号： H01J1/14

摘要： In a directly heated cathode including a base formed of an alloy containing nickel as its principal component and coated with an oxide of an alkaline earth metal which emits electrons, a layer of a metal selected from the group consisting of nickel, cobalt, platinum and rhodium or of an alloy containing one of these metals as its principal component is formed on both surfaces of the base to one of which surfaces the coating of the oxide is applied, so as to thereby prevent the peeling-off of the coating of the oxide from the base. In order to avoid deformation of the base, a powder alloy containing tungsten and nickel as its principal components, a powder alloy containing molybdenum and nickel as its principal components or one of these powder alloys which is coated with nickel, cobalt or a cobalt-nickel alloy is deposited on the surface of the base to which the coating of the oxide is applied.

摘要翻译： 在由包含镍作为其主要成分并且涂覆有发射电子的碱土金属的氧化物的合金形成的基底的直接加热的阴极中，选自镍，钴，铂和铑的金属层 或者含有这些金属中的一种作为其主要成分的合金形成在基底的两个表面上，其中一个表面施加氧化物的涂层，从而防止氧化物涂层的剥离 的基地。 为了避免基体的变形，以钨和镍为主要成分的粉末合金，以钼和镍为主要成分的粉末合金或这些粉末合金之一，其中涂有镍，钴或钴镍 合金沉积在施加氧化物涂层的基底的表面上。

公开(公告)号：US4528474A

公开(公告)日：1985-07-09

申请号：US577726

申请日：1984-02-08

申请人： Jason J. Kim

发明人： Jason J. Kim

IPC分类号： H01J1/15 ,  H01J3/02 ,  H01J9/04 ,  H01J1/14

CPC分类号： H01J9/04 ,  H01J1/15 ,  H01J3/027

摘要： Disclosed is a method and apparatus for producing a high electron beam current having a low energy spread at a high brightness of the beam and a uniform intensity distribution. The electron beam is extracted from an emission current which consists of used emission current and unused emission current. The used emission current has a uniform intensity distribution. The apparatus produces a negligibly small unused emission current by using both a frustum shaped cathode and a multi-electrode. The cathode comprises a thermoelectron emissive material having a low work function and one or more thin layers which cover the side surface of the cathode. A material of the outermost thin layer has a high work function. The multi-electrode consists of the cathode, a first grid electrode, a second grid electrode and an anode electrode. The used emission current is generated from the top surface of the cathode. The unused emission current that is generated from the side surface of the cathode is negligibly small. The top surface is immersed into a strong accelerating electric field. By adjusting the field at the top surface, an emission current density from the top surface can be varied in the range of one to several hundred times of the saturation current density at an operating temperature. Methods for manufacturing the cathode are provided.

摘要翻译： 公开了一种用于产生在光束的高亮度下具有低能量扩散并且具有均匀的强度分布的高电子束电流的方法和装置。 从使用的发射电流和未使用的发射电流组成的发射电流提取电子束。 所使用的发射电流具有均匀的强度分布。 该装置通过使用截头锥形阴极和多电极来产生可忽略的小的未使用的发射电流。 阴极包括具有低功函数的热电子发射材料和覆盖阴极侧表面的一个或多个薄层。 最外层薄层的材料具有高功函数。 多电极由阴极，第一栅极，第二栅极和阳极组成。 所用的发射电流是从阴极的顶面产生的。 从阴极的侧面产生的未使用的发射电流可以忽略不计。 顶表面浸入强加速电场。 通过调整顶表面的场，来自顶表面的发射电流密度可以在工作温度下在饱和电流密度的一到几百倍的范围内变化。 提供制造阴极的方法。

公开(公告)号：US4405878A

公开(公告)日：1983-09-20

申请号：US307404

申请日：1981-10-01

申请人： David W. Oliver

发明人： David W. Oliver

IPC分类号： G03F7/26 ,  H01J9/04 ,  H01J9/14 ,  H01J9/18 ,  H01J1/14

CPC分类号： H01J9/04 ,  G03F7/26 ,  H01J9/14 ,  H01J9/18

摘要： A variety of technologies have been applied in the development of a bondedrid cathode. Erosion lithography is used for making the fine-detail grid structure, combining air erosion and lithographic techniques. To obtain openings of the order of 0.001 inch (one mil) or smaller, a nozzle with a high aspect ratio exit opening is used, and the cathode grid structure is scanned. A photo resist in which the grid pattern is developed is used over the molybdenum or tungsten grid film. The metal film is removed from the grid openings by chemical etching. The photo resist over the metal grid is used as a composite mask for removing the BN insulation in the openings by erosion with Al.sub.2 O.sub.3 powder from the special nozzle on the air blast gun.

摘要翻译： 多种技术已被应用于栅格阴极的开发中。 侵蚀光刻用于制作精细细网格结构，结合风蚀和光刻技术。 为了获得0.001英寸（1密耳）以下的开口，使用具有高纵横比的出口的喷嘴，并扫描阴极栅格结构。 在钼或钨网格膜上使用其中开发网格图案的光致抗蚀剂。 通过化学蚀刻从网格开口去除金属膜。 金属格栅上的光刻胶用作复合掩模，用于通过喷气枪上的特殊喷嘴用Al2O3粉末侵蚀而去除开口中的BN绝缘体。

公开(公告)号：US4400648A

公开(公告)日：1983-08-23

申请号：US192870

申请日：1980-10-01

申请人： Sadanori Taguchi ,  Yukio Honda ,  Toshiyuki Aida ,  Ushio Kawabe

发明人： Sadanori Taguchi ,  Yukio Honda ,  Toshiyuki Aida ,  Ushio Kawabe

IPC分类号： H01J1/28 ,  H01J1/14

CPC分类号： H01J1/28

摘要： An impregnated cathode having a complex porous body of one-body construction which is mounted in a metal sleeve and in which a partition layer made of a porous material having a porosity less than 17% is arranged in close contact with an impregnated layer made of a porous material containing an electron emissive material. The aforementioned porous partition layer takes the place of the conventional partition plate of refractory metal. The impregnated cathode according to the present invention can not only have its size reduced without any difficulty but also enjoy a high emission current density with a remarkably small dispersion.

摘要翻译： 具有安装在金属套筒中的单体结构的复合多孔体的浸渍阴极，其中由孔隙率小于17％的多孔材料制成的分隔层紧密接触于由 含有电子发射材料的多孔材料。 上述多孔分隔层代替常规的难熔金属隔板。 根据本发明的浸渍阴极不仅能够使其尺寸减小而且难以实现，而且还可以获得非常小的色散的高发射电流密度。

公开(公告)号：US4400647A

公开(公告)日：1983-08-23

申请号：US295877

申请日：1981-08-24

申请人： George Palty

发明人： George Palty

IPC分类号： H01J1/14 ,  H01J9/04 ,  H01J1/02

CPC分类号： H01J9/042 ,  H01J1/14

摘要： Cathode structures for cathode ray tubes are multilayer structures wherein the multilayer structures are formed from a laminate of at least two self-supporting layers of particles of emissive material dispersed in a fugitive organic binder matrix.

摘要翻译： 用于阴极射线管的阴极结构是多层结构，其中多层结构由分散在逸散有机粘合剂基质中的发射材料颗粒的至少两个自支撑层的层压体形成。

公开(公告)号：US4350920A

公开(公告)日：1982-09-21

申请号：US165893

申请日：1980-07-03

申请人： Theodorus C. J. M. Bertens

发明人： Theodorus C. J. M. Bertens

IPC分类号： H01J1/14 ,  H01J1/28 ,  H01J19/06 ,  H01K1/04

CPC分类号： H01J1/28

摘要： A compressed dispenser cathode having 1-15% by weight of Ba.sub.2 Sc.sub.2 O.sub.5 in a porous metal cathode body has an emission having a larger current density (exceeding 6 A/cm.sup.2) and a longer life (more than 3000 hours).

摘要翻译： 在多孔金属阴极体中具有1-15重量％的Ba 2 Sc 2 O 5的压缩分配器阴极具有较大的电流密度（超过6A / cm 2）和更长寿命（超过3000小时）的发射。

公开(公告)号：US4313854A

公开(公告)日：1982-02-02

申请号：US91840

申请日：1979-11-06

申请人： Kazuo Sunahara ,  Akira Misumi

发明人： Kazuo Sunahara ,  Akira Misumi

IPC分类号： H01J1/14 ,  H01J1/15 ,  A01B1/04

CPC分类号： H01J1/14

摘要： An oxide-coated cathode for electron tubes comprising a base metal plate made of an alloy containing nickel as a major component and at least one high-melting point metal in an amount of 2% by weight or more, and if required, a small amount of one or more reducing elements, and an electron emissive alkaline earth metal oxide layer adhered to the base metal plate, characterized by having a carbide layer made of at least one carbide of Si, B, Ti, Zr, Hf, V, Nb, Ta, Mo or W between the base metal plate and the electron emissive alkaline earth metal oxide layer can maintain electron emitting life for a long period of time due to the prevention of interfacial reaction between the base metal layer and the alkaline earth metal oxide layer.

摘要翻译： 一种用于电子管的氧化物涂覆阴极，包括由含有镍作为主要成分的合金制成的母材金属板和至少一种2重量％以上的高熔点金属，如果需要，少量 一个或多个还原元素和电子发射碱土金属氧化物层粘合到基体金属板上，其特征在于具有由至少一种由Si，B，Ti，Zr，Hf，V，Nb， 基底金属板和电子发射碱土金属氧化物层之间的Ta，Mo或W可以由于防止基底金属层和碱土金属氧化物层之间的界面反应而长时间保持电子发射寿命。