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    Segmented gate drive for dynamic beam shape correction in field emission cathodes
    3.
    发明专利
    Segmented gate drive for dynamic beam shape correction in field emission cathodes 未知

    公开(公告)号：AU2461901A

    公开(公告)日：2001-07-16

    申请号：AU2461901

    申请日：2000-12-28

    Applicant: EXTREME DEVICES INC

    Inventor： JAMISON KEITH D ,  PATTERSON DONALD E

    IPC: H01J29/04 ,  H01J1/304 ,  H01J3/02 ,  H01J29/48

    Abstract: A field emission cathode providing for dynamic adjustment of beam shape is disclosed. Beam shape adjustment is accomplished by segmenting the gate electrode of a gated field emission cathode and independently driving the various gate segments to form the desired beam shape. Segments can be turned on and off as the beam is deflected allowing dynamic correction of aberrations in the beam. A focus lens can be placed on the gated cathode to produce a parallel electron beam. In addition, a hollow cathode can be produced to minimize space charge repulsion in a beam.

    SEGMENTED GATE DRIVE FOR DYNAMIC BEAM SHAPE CORRECTION IN FIELD EMISSION CATHODES
    5.
    发明专利
    SEGMENTED GATE DRIVE FOR DYNAMIC BEAM SHAPE CORRECTION IN FIELD EMISSION CATHODES 未知

    公开(公告)号：CA2396164A1

    公开(公告)日：2001-07-12

    申请号：CA2396164

    申请日：2000-12-28

    Applicant: EXTREME DEVICES INC

    Inventor： JAMISON KEITH D ,  PATTERSON DONALD E

    IPC: H01J29/04 ,  H01J1/304 ,  H01J3/02 ,  H01J29/48

    Abstract: A field emission cathode providing for dynamic adjustment of beam shape is disclosed. Beam shape adjustment is accomplished by segmenting the gate electrode (17) of a gated field emission cathode and independently driving t he various gate segments to form the desired beam shape. Segments can be turned on and off as the beam is deflected allowing the dynamic correction of aberrations in the beam. A focus lens (32) can be placed on the gated cathod e to produce a parallel electron beam. In addition, a hollow cathode can be produced to minimize space charge repulsion in a beam.

    Multilayer carbon-based field emission electron device for high current density applications
    8.
    发明专利
    Multilayer carbon-based field emission electron device for high current density applications 未知

    公开(公告)号：AU7753000A

    公开(公告)日：2002-04-15

    申请号：AU7753000

    申请日：2000-10-04

    Applicant: EXTREME DEVICES INC

    Inventor： PATTERSON DONALD E ,  JAMISON KEITH D

    IPC: H01J1/304 ,  H01J9/02 ,  H01J29/04 ,  H01J29/48

    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.

    Compact field emission electron gun and focus lens
    9.
    发明专利
    Compact field emission electron gun and focus lens 未知

    公开(公告)号：AU5630200A

    公开(公告)日：2001-02-05

    申请号：AU5630200

    申请日：2000-06-21

    Applicant: EXTREME DEVICES INC

    Inventor： GORSKI RICH ,  JAMISON KEITH D

    IPC: H01J9/44 ,  H01J1/304 ,  H01J3/02 ,  H01J3/18 ,  H01J9/02 ,  H01J29/04

    Abstract: A source of a focused electron beam is provided for use in a cathode ray tube (CRT) or vacuum microelectronic device. A carbon-based field emission cathode, extraction gate and focus lens are formed as an integrated structure using fabrication techniques that are used to form integrated circuits. An external focus lens is used to confine the beamlets from a large number of carbon-based surfaces. A convergence cup accelerates the beam toward a drift space and finally to a screen on a CRT or other device. The source may be much more compact than present CRT electron optics apparatus.

    COMPACT FIELD EMISSION ELECTRON GUN AND FOCUS LENS
    10.
    发明公开
    COMPACT FIELD EMISSION ELECTRON GUN AND FOCUS LENS 审中-公开
    福克斯坦KOMPAKTE FELDEMISSIONS-ELEKTRONENKANONE

    公开(公告)号：EP1198819A4

    公开(公告)日：2002-11-06

    申请号：EP00941613

    申请日：2000-06-21

    Applicant: EXTREME DEVICES INC

    Inventor： GORSKI RICH ,  JAMISON KEITH D

    IPC: H01J9/44 ,  H01J1/304 ,  H01J3/02 ,  H01J3/18 ,  H01J9/02 ,  H01J29/04

    CPC classification number: H01J29/04 ,  H01J3/022 ,  H01J2201/30457

    Abstract: A compact electron gun includes a field emission cathode (12), a Pierce-like electrode (18), a gate layer (14), a focus lens layer (16), a focus lens (20), and a convergence cup (22).

    Abstract translation: 提供聚焦电子束的源用于阴极射线管（CRT）或真空微电子器件。 使用用于形成集成电路的制造技术，形成碳基场致发射阴极，提取栅极和聚焦透镜作为集成结构。 外部聚焦透镜用于限制来自大量碳基表面的子束。 汇聚杯将波束朝向漂移空间加速，最后加速到CRT或其他设备上的屏幕。 源可能比现有的CRT电子光学装置更紧凑。

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