Multilayer carbon-based field emission electron device for high current density applications
    151.
    发明授权
    Multilayer carbon-based field emission electron device for high current density applications 有权
    用于高电流密度应用的多层碳基场致发射电子器件

    公开(公告)号:US06181055B2

    公开(公告)日:2001-01-30

    申请号:US09169909

    申请日:1998-10-12

    CPC classification number: H01J9/025 H01J1/3042 H01J2201/30446

    Abstract: An electron field emission device is provided by placing a substrate in a reactor, heating the substrate and supplying a mixture of hydrogen and a carbon-containing gas at a concentration of about 8 to 13 per cent to the reactor while supplying energy to the mixture of gases near the substrate for a time to grow a first layer of carbon-based material to a thickness greater than about 0.5 micrometers, subsequently reducing the concentration of the carbon-containing gas and continuing to grow a second layer of carbon-based material, the second layer being much thicker than the first layer. The substrate is subsequently removed from the first layer and an electrode is applied to the second layer. The device is free-standing and can be used as a cold cathode in a variety of electronic devices such as cathode ray tubes, amplifiers and traveling wave tubes. The surface of the substrate may be patterned before growth of the first layer to produce a patterned surface on the field emission device.

    Abstract translation: 通过将基板放置在反应器中,加热基板并将浓度约为8%至13%的含碳气体的混合物供应给反应器,同时向混合物中提供能量来提供电子场发射装置, 靠近衬底的气体一段时间,以将第一层碳基材料生长至大于约0.5微米的厚度,随后降低含碳气体的浓度并继续生长第二层碳基材料, 第二层比第一层厚得多。 随后从第一层去除衬底,并将电极施加到第二层。 该器件是独立的,可用作各种电子器件如阴极射线管,放大器和行波管中的冷阴极。 可以在第一层生长之前对衬底的表面进行图案化以在场发射器件上产生图案化表面。

    Carbon-containing cathodes for enhanced electron emission
    152.
    发明授权
    Carbon-containing cathodes for enhanced electron emission 失效
    含碳阴极,用于增强电子发射

    公开(公告)号:US6091186A

    公开(公告)日:2000-07-18

    申请号:US748690

    申请日:1996-11-13

    CPC classification number: H01J1/30 H01J2201/30446 H01J2201/32 H01J2201/342

    Abstract: A cathode has electropositive atoms directly bonded to a carbon-containing substrate. Preferably, the substrate comprises diamond or diamond-like (sp.sup.3) carbon, and the electropositive atoms are Cs. The cathode displays superior efficiency and durability. In one embodiment, the cathode has a negative electron affinity (NEA). The cathode can be used for field emission, thermionic emission, or photoemission. Upon exposure to air or oxygen, the cathode performance can be restored by annealing or other methods. Applications include detectors, electron multipliers, sensors, imaging systems, and displays, particularly flat panel displays.

    Abstract translation: 阴极具有直接键合到含碳衬底的正电原子。 优选地,衬底包括金刚石或类金刚石(sp3)碳,正电性原子是Cs。 阴极显示出优异的效率和耐久性。 在一个实施方案中,阴极具有负电子亲和力(NEA)。 阴极可用于场发射,热离子发射或光电发射。 暴露于空气或氧气时,阴极性能可通过退火或其他方法恢复。 应用包括检测器,电子倍增器,传感器,成像系统和显示器,特别是平板显示器。

    Electron field emission
    155.
    发明授权
    Electron field emission 失效
    电子场发射

    公开(公告)号:US5619093A

    公开(公告)日:1997-04-08

    申请号:US414838

    申请日:1995-03-31

    CPC classification number: H01J1/304 H01J2201/30403 H01J2201/30446

    Abstract: In a system containing an electron field emitter array characterized by aying diamond powder to a substrate and affixing the powder thereto, the diamond powder being composed of particles having sharp tips which are adapted to emit electrons in a vacuum and in an electric field, which electrons impact a phosphor layer disposed on an anode spaced above the tips of the diamond powder particles.

    Abstract translation: 在包含电子场发射器阵列的系统中,其特征在于将金刚石粉末施加到基底上并将粉末附着在其上,金刚石粉末由具有尖锐尖端的颗粒组成,其适于在真空和电场中发射电子,该电子 影响设置在间隔在金刚石粉末颗粒的尖端上的阳极上的荧光体层。

Patent Agency Ranking