中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

255 records (took 0.039 seconds)

    Processing of materials for uniform field emission
    111.
    发明授权
    Processing of materials for uniform field emission 失效
    加工用于均匀场发射的材料

    公开(公告)号：US5857882A

    公开(公告)日：1999-01-12

    申请号：US607532

    申请日：1996-02-27

    Applicant: Lawrence S. Pam ,  Thomas E. Felter ,  Alec Talin ,  Douglas Ohlberg ,  Ciaran Fox ,  Sung Han

    Inventor： Lawrence S. Pam ,  Thomas E. Felter ,  Alec Talin ,  Douglas Ohlberg ,  Ciaran Fox ,  Sung Han

    IPC: H01J9/02 ,  H01J9/44

    CPC classification number: H01J9/025 ,  H01J2201/30457

    Abstract: This method produces a field emitter material having a uniform electron emitting surface and a low turn-on voltage. Field emitter materials having uniform electron emitting surfaces as large as 1 square meter and turn-on voltages as low as 16V/.mu.m can be produced from films of electron emitting materials such as polycrystalline diamond, diamond-like carbon, graphite and amorphous carbon by the method of the present invention. The process involves conditioning the surface of a field emitter material by applying an electric field to the surface, preferably by scanning the surface of the field emitter material with an electrode maintained at a fixed distance of at least 3 .mu.m above the surface of the field emitter material and at a voltage of at least 500V. In order to enhance the uniformity of electron emission the step of conditioning can be preceeded by ion implanting carbon, nitrogen, argon, oxygen or hydrogen into the surface layers of the field emitter material.

    Abstract translation: 该方法产生具有均匀的电子发射表面和低导通电压的场致发射材料。 具有大至1平方米的均匀电子发射表面和低至16V /μm的导通电压的场致发射体材料可以通过诸如多晶金刚石，类金刚石碳，石墨和无定形碳等电子发射材料的薄膜由 本发明的方法。 该过程包括通过向表面施加电场来调节场致发射材料的表面，优选地通过用保持在场的表面上至少3μm的固定距离的电极扫描场致发射体材料的表面 发射极材料和至少500V的电压。 为了提高电子发射的均匀性，调节步骤可以先将碳，氮，氩，氧或氢离子注入场致发射体材料的表面层。

    Microwave vacuum tube devices employing electron sources comprising activated ultrafine diamonds
    112.
    发明授权
    Microwave vacuum tube devices employing electron sources comprising activated ultrafine diamonds 失效
    使用包含活性超细金刚石的电子源的微波真空管装置

    公开(公告)号：US5796211A

    公开(公告)日：1998-08-18

    申请号：US640592

    申请日：1996-05-01

    Applicant: John Edwin Graebner ,  Sungho Jin ,  Gregory Peter Kochanski ,  Wei Zhu

    Inventor： John Edwin Graebner ,  Sungho Jin ,  Gregory Peter Kochanski ,  Wei Zhu

    IPC: H01J1/304 ,  H01J9/02 ,  H01J23/06 ,  H01J23/04

    CPC classification number: H01J9/025 ,  H01J1/3042 ,  H01J23/06 ,  H01J2201/30403 ,  H01J2201/30457 ,  H01J61/0677 ,  H01J61/0737

    Abstract: In accordance with the invention, a microwave vacuum tube device, such as a traveling wave tube, is provided with an electron source comprising activated ultrafine diamonds. Applicants have discovered that ultrafine diamonds (5-1,000 nm diameter), when activated by heat treatment in a hydrogen plasma, become excellent room-temperature electron emitters capable of producing electron emission current density of at least 10 mA/cm.sup.2 at low electric fields of 10 V/micrometer. Sources using these diamonds provide electrons for microwave vacuum tubes at low voltage, low operating temperature and with fast turn-on characteristics. A multiple grid structure is described for providing high quality electron beams particularly useful for traveling wave tubes.

    Abstract translation: 根据本发明，诸如行波管的微波真空管装置设置有包括活化的超细金刚石的电子源。 申请人已经发现，当在氢等离子体中通过热处理活化时，超细金刚石（直径5-1000nm）成为能够在低电场下产生至少10mA / cm 2的电子发射电流密度的优异的室温电子发射体 10 V /千分尺。 使用这些钻石的源在低电压，低工作温度和快速开启特性的微波真空管中提供电子。 描述了用于提供对于行波管特别有用的高质量电子束的多栅格结构。

    Field emission display device
    113.
    发明授权
    Field emission display device 失效
    场致发射显示装置

    公开(公告)号：US5763997A

    公开(公告)日：1998-06-09

    申请号：US456453

    申请日：1995-06-01

    Applicant: Nalin Kumar

    Inventor： Nalin Kumar

    IPC: H01J1/304 ,  H01J1/316 ,  H01J9/02 ,  H01J31/12 ,  H01J61/067 ,  H01J63/06 ,  H01J19/24

    CPC classification number: H01J1/3042 ,  H01J1/304 ,  H01J1/316 ,  H01J31/127 ,  H01J61/0677 ,  H01J63/06 ,  H01J9/027 ,  H01J2201/30426 ,  H01J2201/30457 ,  H01J2201/3165 ,  H01J2201/319 ,  H01J2329/00 ,  H01J2329/8625

    Abstract: A matrix addressable flat panel display includes a flat cathode operable for emitting electrons to an anode when an electric field is produced across the surface of the flat cathode by two electrodes placed on each side of the flat cathode. The flat cathode may consist of a cermet or amorphic diamond or some other combination of a conducting material and an insulating material such as a low effective work function material. The electric field produced causes electrons to hop on the surface of the cathode at the conducting-insulating interfaces. An electric field produced between the anode and the cathode causes these electrons to bombard a phosphor layer on the anode.

    Abstract translation: 矩阵寻址平板显示器包括平面阴极，当通过放置在平面阴极的每一侧上的两个电极跨越平面阴极的表面产生电场时，可以将电子发射到阳极。 扁平阴极可以由金属陶瓷或非晶金刚石或导电材料和绝缘材料的一些其它组合构成，例如低有效功函数材料。 所产生的电场导致电子在导电绝缘界面处在阴极的表面上跳跃。 在阳极和阴极之间产生的电场使得这些电子轰击阳极上的磷光体层。

    Diamond cold cathode
    114.
    发明授权
    Diamond cold cathode 失效
    金刚石冷阴极

    公开(公告)号：US5670788A

    公开(公告)日：1997-09-23

    申请号：US823989

    申请日：1992-01-22

    Applicant: Michael W. Geis

    Inventor： Michael W. Geis

    IPC: H01J1/304 ,  H01L29/06 ,  H01L29/12

    CPC classification number: H01J1/3042 ,  H01J2201/30457

    Abstract: A cold cathode device is provided comprising a wide-bandgap (>5 eV) material exhibiting negative electron affinities, low trap densities, and high carrier mobilities, a junction between a first region of the wide-bandgap material having n-type conductivity and a second region of the wide-bandgap material having p-type conductivity, and a conductive contact to forward bias the junction causing electrons to be emitted near the junction into an exterior region.

    Abstract translation: 提供一种冷阴极器件，其包括具有负电子亲和力，低陷阱密度和高载流子迁移率的宽带隙（> 5eV）材料，具有n型导电性的宽带隙材料的第一区域和 宽带隙材料的第二区域具有p型导电性，以及导电接触件，以正向偏置连接，使得电子在接合点附近发射到外部区域。

    Field emission devices employing improved emitters on metal foil and methods for making such devices
    116.
    发明授权
    Field emission devices employing improved emitters on metal foil and methods for making such devices 失效
    在金属箔上使用改进的发射体的场致发射器件和用于制造这种器件的方法

    公开(公告)号：US5648699A

    公开(公告)日：1997-07-15

    申请号：US555594

    申请日：1995-11-09

    Applicant: Sungho Jin ,  Gregory Peter Kochanski ,  Wei Zhu

    Inventor： Sungho Jin ,  Gregory Peter Kochanski ,  Wei Zhu

    IPC: G09F9/313 ,  H01H9/02 ,  H01J1/304 ,  H01J9/02 ,  H01J31/12 ,  H01J1/30

    CPC classification number: H01J9/025 ,  H01J2201/30403 ,  H01J2201/30457

    Abstract: The present invention provides improved methods for making field emission devices by which one can pre-deposit and bond the diamond particles or islands on a flexible metal foil at a desirably high temperature (e.g., near 900.degree. C. or higher), and then subsequently attach the high-quality- emitter-coated conductor foil onto the glass substrate. In addition to maximizing the field emitter properties, these methods provide high-speed, low-cost manufacturing. Since the field emitters can be pre-deposited on the metal foil in the form of long continuous sheet wound as a roll, the cathode assembly can be made by a high-speed, automated bonding process without having to subject each of the emitter-coated glass substrates to plasma heat treatment in a vacuum chamber.

    Abstract translation: 本发明提供了用于制造场致发射器件的改进方法，通过该方法可以在理想的高温（例如接近900℃或更高）下预先沉积并将金刚石颗粒或岛结合在柔性金属箔上，然后随后 将高品质发射极涂覆的导体箔附着在玻璃基板上。 除了最大化场发射器性能之外，这些方法提供高速，低成本的制造。 由于场致发射体可以预先沉积在金属箔上，以卷绕成卷的长连续片的形式，阴极组件可以通过高速，自动化的接合工艺制成，而不必对每个发射器涂覆 玻璃基板在真空室中进行等离子体热处理。

    Field emission device and method for making same
    119.
    发明授权
    Field emission device and method for making same 失效
    场发射装置及其制造方法

    公开(公告)号：US5588894A

    公开(公告)日：1996-12-31

    申请号：US548533

    申请日：1995-10-26

    Applicant: Sungho Jin ,  Gregory P. Kochanski ,  Wei Zhu

    Inventor： Sungho Jin ,  Gregory P. Kochanski ,  Wei Zhu

    IPC: H01J1/304 ,  H01J9/02 ,  H01J31/12

    CPC classification number: H01J9/025 ,  H01J1/304 ,  H01J2201/30403 ,  H01J2201/30457 ,  H01J2329/8625

    Abstract: In accordance with the invention, a field emission device is made by disposing emitter material on an insulating substrate, applying masking particles to the emitter material, applying an insulating film and a gate conductor film over the masking particles and emitter material and removing the particles to reveal a random distribution of apertures to the emitter material. The result is a novel and economical field emission device having numerous randomly distributed emission apertures which can be used to make low cost flat panel displays.

    Abstract translation: 根据本发明，通过将发射体材料设置在绝缘基板上，将掩模粒子施加到发射极材料，在掩模颗粒和发射体材料上施加绝缘膜和栅极导体膜，并将颗粒除去，制成场致发射器件 揭示孔径随机分布到发射体材料。 结果是一种新颖且经济的场致发射装置，其具有许多随机分布的发射孔，其可用于制造低成本的平板显示器。

Patent Agency Ranking