中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

11 records (took 0.015 seconds)

    Electron source of lanthanum hexaboride and method of constructing same
    1.
    发明公开
    Electron source of lanthanum hexaboride and method of constructing same 失效
    四氢呋喃的电子源及其构建方法

    公开(公告)号：EP0207772A3

    公开(公告)日：1987-11-19

    申请号：EP86305062

    申请日：1986-06-30

    Applicant: Brünger, Wilhelm Heinrich Dr. ,  Nixon, William Charles, Dr.

    Inventor： Brünger, Wilhelm Heinrich Dr.

    IPC: H01J01/16 ,  H01J09/04

    CPC classification number: H01J1/16 ,  H01J37/06

    Abstract: An electron emitter comprises a single, cubic lanthanum hexaboride crystal (1) mounted in a supporting material heatable by heating wires (3), the arrangement being such that a naturally grown edge (2) between two crystal faces, preferably (1,0,0) faces, forms a line emitter which has high length to radius and width ratios, preferably of at least 50 : 1.

    Abstract translation: 电子发射器包括安装在通过加热导线（3）可加热的支撑材料中的单一立方镧六硼化物晶体（1），该布置使得两个晶面之间的天然生长边缘（2）优选地（1,0， 0）面，形成具有高的半径和宽度比的长度的线发射器，优选地至少为50:1。

    Method of manufacturing a dispenser cathode
    3.
    发明公开
    Method of manufacturing a dispenser cathode 失效
    制造分配器阴极的方法

    公开(公告)号：EP0156450A3

    公开(公告)日：1986-01-08

    申请号：EP85200524

    申请日：1982-12-20

    Applicant: N.V. Philips' Gloeilampenfabrieken

    Inventor： Himmelbauer, Erich Eduard

    IPC: H01J09/04

    CPC classification number: H01J29/04 ,  H01J1/28 ,  H01J9/04 ,  H01J29/485

    Abstract: Method of manufacturing a dispenser cathode having an emissive surface (51) extending substantially perpendicularly to an axis (52), which emissive surface (51) of the cathode is surrounded by a conductive collar (68) which extends from the edge of the emissive surface substantially parallel to the axis (52). By making the part of the emissive surface (51) which adjoins the collar (68) to be less porous than the reaminder of the emissive surface by sealing the pores with a high energy beam or by locally squeezing the pores during a drawing process of a holder around the emissive body (60), the anode current, especially in a diode gun, can be further reduced.

    EXPANDABLE DISPENSER CATHODE
    4.
    发明申请
    EXPANDABLE DISPENSER CATHODE 审中-公开
    可扩展分配器CATHODE

    公开(公告)号：WO1989009480A1

    公开(公告)日：1989-10-05

    申请号：PCT/US1989000407

    申请日：1989-02-03

    Applicant: HUGHES AIRCRAFT COMPANY

    Inventor： HUGHES AIRCRAFT COMPANY ,  BREEZE, Glenn, S. ,  BAIRD, Robert, M.

    IPC: H01J09/04

    CPC classification number: H01J9/04

    Abstract: A dispenser cathode and method for making the same are disclosed wherein a mixture of tungsten and aluminate powders are pressed by a die into a foil sleeve. A heater assembly can be attached to the back of the pellet for activating the emissive material. An impregnated cathode therefore can be manufactured in a few hours by relatively inexpensive processing techniques.

    SELF-ALIGNED GATED ELECTRON FIELD EMITTER
    6.
    发明申请
    SELF-ALIGNED GATED ELECTRON FIELD EMITTER 审中-公开
    自对准栅电子场发射器

    公开(公告)号：WO1993009558A1

    公开(公告)日：1993-05-13

    申请号：PCT/US1992007488

    申请日：1992-09-04

    Applicant: BELL COMMUNICATIONS RESEARCH, INC.

    Inventor： BELL COMMUNICATIONS RESEARCH, INC. ,  BAGLEY, Brian, G. ,  MARCUS, Robert, Boris ,  RAVI, Tirunelveli, Subramaniam

    IPC: H01J09/04

    CPC classification number: H01J3/022 ,  H01J9/025 ,  Y10S438/978

    Abstract: A method of fabricating a self-aligned gated electron field emitter. An oxidation process forms an optimized, atomically sharp needle (18) in a silicon substrate (12). The needle and surrounding planar area is conformally coated with silicon dioxide (22). A dielectric layer (24) is deposited and planarized over the needle. The dielectric layer is partially etched away to expose the coated needle. The exposed silicon dioxide needle is isotropically etched so as to undercut the dielectric layer. A gate metal is directionally deposited so as to form a gate layer (26) on the planar portions of the dielectric layer that is electrically isolated from the gate metal (28) deposited on the needle. The metal on the needle is anodically etched by applying the potential only to the silicon and not to the gate layer. Electro-plating may recoat the needle with another metal (30). The silicon substrate may be replaced by a glass substrate (42) on which is deposited a polysilicon or amorphous silicon layer (40).

    METHOD AND APPARATUS FOR DEPOSITING CATHODE MATERIAL ON A WIRE CATHODE
    7.
    发明申请
    METHOD AND APPARATUS FOR DEPOSITING CATHODE MATERIAL ON A WIRE CATHODE 审中-公开
    用于在阴极阴极上沉积阴极材料的方法和装置

    公开(公告)号：WO1996035221A1

    公开(公告)日：1996-11-07

    申请号：PCT/IB1996000294

    申请日：1996-04-10

    Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

    Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  VAN LETH, Nicolaas, Joseph, Martin ,  VERHOECKX, Godefridus, Johannes ,  STEVENS, Theodorus, Henricus, Maria

    IPC: H01J09/04

    CPC classification number: H01J9/042 ,  H01J9/04 ,  H01J2201/2817

    Abstract: A method and apparatus for depositing emitter material (3) on a wire cathode by means of electrodeposition. An amount (13) of a suspension comprising an alkaline-earth compound is transferred by a drop holder (11) which is positioned around the wire (2), by movement in a direction transverse to a longitudinal axis of the wire (2), whereafter an electric voltage is applied to the drop holder (11) and the wire (2) to deposit the emitter material (3) on the wire (2), after which the drop holder (11) is withdrawn from the wire (2) again. During the electrodeposition process, the drop holder (11) and the wire (2) can be moved with respect to each other along sections of the wire (2) where the emitter material (3) has to be deposited.

    Abstract translation: 一种通过电沉积将发射体材料（3）沉积在线阴极上的方法和装置。 包含碱土金属化合物的悬浮液的量（13）通过沿垂直于导线（2）的纵向轴线的方向移动而通过定位在线材（2）周围的液滴保持器（11）转移， 之后向液滴保持器（11）和电线（2）施加电压以将发射器材料（3）沉积在电线（2）上，之后将滴落保持器（11）从电线（2）中取出， 再次。 在电沉积过程中，液滴保持器（11）和导线（2）可以相对于导线（2）沿发射极材料（3）必须沉积的部分彼此移动。

    Tungsten-iridium impregnated cathode
    8.
    发明公开
    Tungsten-iridium impregnated cathode 失效
    钨铱浸渍阴极

    公开(公告)号：EP0157634A3

    公开(公告)日：1986-01-08

    申请号：EP85302311

    申请日：1985-04-02

    Applicant: VARIAN ASSOCIATES, INC.

    Inventor： Green, Michael Curzon

    IPC: H01J01/28 ,  H01J01/14 ,  H01J09/04

    CPC classification number: H01J9/04 ,  H01J1/28

    Abstract: Porous agglomerates (14) are made from pure tungsten by sintering fine particles together and mechnically breaking down the mass to form some agglomerates (14) considerably larger than the particles. These agglomerates (14) are mixed with fine iridium powder (18) and sintered to form a porous mass. The mass is machined to the cathode shapes (10') and impregnated with an alkaline earth aluminate (18). The large agglomerates (14) alloy with the iridium only on their outer surface. Their pure tungsten interior provides the surfaces to reduce the alkaline earth oxide to the metal which activates the cathode.

    Abstract translation: 多孔聚集体（14）由纯钨制成，将微细颗粒烧结在一起，并通过机械破碎形成一些比颗粒大得多的团聚体（14）。 这些附聚物（14）与精细的铱粉末（18）混合并烧结形成多孔物质。 将该物质加工成阴极形状（10'）并用碱土铝酸盐（18）浸渍。 大团聚体（14）仅在其外表面与铱合金化。 他们纯净的钨内部提供表面减少碱土氧化物对激活阴极的金属。

Patent Agency Ranking