Enhancement in bonding strength in field emission electron source

    公开(公告)号:US5804908A

    公开(公告)日:1998-09-08

    申请号:US804400

    申请日:1997-02-21

    Applicant: Akihiro Yano

    Inventor: Akihiro Yano

    Abstract: There is provided a field emission electron source including (a) a substrate at least a surface of which is electrically conductive, (b) at least one conically shaped, electrically conductive emitter, the emitter being formed on the substrate, (c) an electrically insulating layer formed on the substrate for electrically insulating the substrate from a gate electrode, (d) a gate electrode formed on the electrically insulating layer, the gate electrode and the electrically insulating layer being formed with an opening in which the emitter is disposed, (e) a bonding pad formed on the electrically insulating layer and in electrical communication with the gate electrode, (f) a first metal layer formed on the bonding pad, and (g) a second metal layer formed on the first metal layer, the second metal layer having a higher melting point than that of the first metal layer. For instance, the first metal layer is made of Au--Sn alloy, and the second metal layer is made of Au--Si alloy, Au--Ge alloy, Au--K alloy, Al--Si alloy, Au or Al. In accordance with the above mentioned field emission electron source, a bonding pad has a metal surface including Au or Al as a principal component. Hence, even if Al wire or Au wire is used for wire-bonding, there can be obtained sufficiently high bonding strength between a bonding pad and a wire.

    Miniature x-ray source
    82.
    发明授权
    Miniature x-ray source 失效
    微型x射线源

    公开(公告)号:US5729583A

    公开(公告)日:1998-03-17

    申请号:US536364

    申请日:1995-09-29

    Abstract: An x-ray head according to the invention includes an evacuated chamber in which a cathode and an anode are disposed and electrical connections from the anode and cathode extending through the wall of the evacuated chamber. The cathode may include a gated array of field emission elements, an array of solid state miniature thermionic cathodes, or ferroelectric cathodes. The anode is a metal producing x-ray radiation in response to the impact of electrons produced by the cathode. The anode may be a foil, a thin film of metal deposited on the inside surface of a wall of the evacuated chamber, or a self-supporting body of a metal that produces x-rays in response to electron impacts. The wiring may include conventional pins penetrating through and sealed to the wall of the chamber for connection to a flexible cable.

    Abstract translation: 根据本发明的X射线头包括其中设置阴极和阳极的抽真空室,并且来自阳极和阴极的电连接延伸穿过抽真空室的壁。 阴极可以包括场发射元件的选通阵列,固态微型热阴极阵列或铁电阴极。 阳极是响应于由阴极产生的电子的影响而产生x射线辐射的金属。 阳极可以是箔,沉积在真空室的壁的内表面上的金属薄膜,或者是响应于电子冲击而产生X射线的金属的自支撑体。 布线可以包括穿透并密封到室的壁的传统的销,用于连接到柔性电缆。

    Electron gun assembly with improved heat resistance
    84.
    发明授权
    Electron gun assembly with improved heat resistance 失效
    具有改善耐热性的电子枪组件

    公开(公告)号:US5698855A

    公开(公告)日:1997-12-16

    申请号:US680837

    申请日:1996-07-16

    Applicant: Toshio Kaihara

    Inventor: Toshio Kaihara

    CPC classification number: H01J9/18 H01J29/481 H01J2201/304

    Abstract: The present invention provides an electron gun assembly including at least one field emission type cold cathode acting as an electron beam source, a support for supporting the cold cathode thereon, a control electrode spaced away from the cold cathode, the control electrode cooperating with the support to enclose the cold cathode therein, a thermal shield member provided both around the control electrode and below the support to prevent heat conduction to the cold cathode. The thermal shield member does not allow heat conduction to the cold cathode when the electron gun assembly is to be enclosed in a glass valve by softening a neck portion of the glass valve with an oxygen burner and then attaching the softened neck portion to the electron gun assembly, resulting in that an emitter of the cold cathode is not increased in temperature and that a summit of an emitter is not oxidized. Thus, the work function of the cold cathode is not increased, and thereby there can be obtained a cathode ray tube including a field emission type cold cathode in which the emission performance is not degraded.

    Abstract translation: 本发明提供了一种电子枪组件,其包括至少一个用作电子束源的场致发射型冷阴极,用于支撑冷阴极的支撑体,与冷阴极间隔开的控制电极,与支撑体配合的控制电极 以将冷阴极封闭在其中,设置在控制电极周围并在支撑件下方的热屏蔽构件,以防止对冷阴极的热传导。 当通过用氧气燃烧器软化玻璃阀的颈部部分,然后将软化的颈部部分附接到电子枪,将电子枪组件封闭在玻璃阀中时,热屏蔽构件不允许对冷阴极的热传导 组装,导致冷阴极的发射极的温度不升高,并且发射极的顶点不被氧化。 因此,冷阴极的功函数不增加,从而可以获得包括发射性能不降低的场发射型冷阴极的阴极射线管。

    Tiled panel display assembly
    85.
    发明授权
    Tiled panel display assembly 失效
    平铺面板显示组件

    公开(公告)号:US5693170A

    公开(公告)日:1997-12-02

    申请号:US727227

    申请日:1996-10-08

    Applicant: Che-Yu Li

    Inventor: Che-Yu Li

    Abstract: A panel display includes a common substrate on which a plurality of small display tiles are mounted in an array and electrically interconnected to replicate a large area panel. Each tile includes a plurality of contact pads which are aligned with corresponding contact pads on the substrate. Solder joints between corresponding contact pads mechanically align and secure the tiles on the substrate, and provide electrical connections therebetween. Selected substrate contact pads are electrically interconnected to provide electrical connections between adjacent tiles.

    Abstract translation: 面板显示器包括公共基板,多个小显示瓦片安装在阵列上并电互连以复制大面积面板。 每个瓦片包括与衬底上的相应接触焊盘对准的多个接触焊盘。 相应接触垫之间的焊接接头将衬垫上的瓷砖机械地对准和固定,并在其间提供电连接。 所选择的衬底接触垫电互连以提供相邻瓷砖之间的电连接。

    Emissive display including field emitters on a transparent substrate
    87.
    发明授权
    Emissive display including field emitters on a transparent substrate 失效
    发射显示器,包括透明基板上的场致发射体

    公开(公告)号:US5646479A

    公开(公告)日:1997-07-08

    申请号:US546211

    申请日:1995-10-20

    CPC classification number: H01J31/127 H01J2201/304

    Abstract: An emissive display comprising: a first substrate including a plurality of controllable anodes; a layer of phosphor on each of the controllable anodes, wherein each phosphor emits light when the anode on which the phosphor is located is activated and electrons bombard the phosphor; a second substrate comprising a light transmissive lens having a display area through which a display is viewed, first and second electrically conductive layers and an insulating layer, wherein the first and second electrically conductive layers and the insulating layer are light transmissive, wherein the insulating layer is between the first and second electrically conductive layers and wherein the first and second electrically conductive layers and the insulating layer are on a side of the lens facing the controllable anodes and phosphor layers, wherein the second electrically conductive layer is located closer to the first substrate than the first electrically conductive layer and comprises a first plurality of holes corresponding to a second plurality of holes in the insulating layer; a plurality of opaque field emitter cones mounted to the first electrically conductive layer in the first and second plurality of holes, emitting electrons to selectively bombard the phosphors layers, wherein the plurality of opaque field emitter cones covers less than ten percent of the display area of the second substrate, wherein the emitted electrons travel through a space between the second electrically conductive layer and the phosphor layer, wherein light emitted from the phosphor layer travels back through said space and through the second substrate to be viewed by a viewer of the display.

    Abstract translation: 一种发光显示器,包括:包括多个可控阳极的第一衬底; 每个可控阳极上的磷光体层,其中当荧光体位于其上的阳极被激活时,每个荧光体发光,并且电子轰击荧光体; 第二基板,其包括透光透镜,具有通过其观察显示器的显示区域,第一和第二导电层和绝缘层,其中所述第一和第二导电层和所述绝缘层是透光的,其中所述绝缘层 在第一和第二导电层之间,并且其中第一和第二导电层和绝缘层位于透镜的面对可控阳极和磷光体层的一侧,其中第二导电层位于更接近第一基底 并且包括与绝缘层中的第二多个孔相对应的第一多个孔; 多个不透明场致发射锥,其安装在第一和第二多个孔中的第一导电层上,发射电子以选择性地轰击荧光体层,其中多个不透明场发射体锥覆盖小于显示面积的10% 所述第二基板,其中所述发射的电子穿过所述第二导电层和所述荧光体层之间的空间,其中从所述荧光体层发射的光通过所述空间返回穿过所述第二基板,以由所述显示器的观察者观看。

    Flat panel detector and image sensor
    88.
    发明授权
    Flat panel detector and image sensor 失效
    平板检测器和图像传感器

    公开(公告)号:US5567929A

    公开(公告)日:1996-10-22

    申请号:US391709

    申请日:1995-02-21

    Abstract: A flat panel image sensor is provided by combining the photoconductive imaging electrode of a vidicon with a two dimensional array of cold cathode field emitters commonly used for flat panel Field Emission Display (FED) systems. The FED operates normally to emit electrons which are accelerated in prior art displays towards a luminescent phosphor to generate light output proportional to the cathode emission. Rather than accelerating towards a phosphor, electrons, in accordance with the principles of this invention, are accelerated towards a photoconductor layer to replace charge removed from the layer by an incident radiation pattern directed at the photoconductor layer through a layer of transparant, electrically-conducting material which serves as a radiation window. A large area, low cost, small, flat panel sensor is realized. The transparant, electrically-conducting layer may be partitioned to reduce stray capacitance for large area sensors and the partitioned, electrically-conducting layer permits a parallel readout mode of operation.

    Abstract translation: 通过组合摄像机的光导成像电极和通常用于平板场发射显示(FED)系统的冷阴极场发射器的二维阵列来提供平板图像传感器。 FED正常工作以发射在现有技术显示器中朝向发光荧光体加速的电子,以产生与阴极发射成比例的光输出。 不是朝向磷光体加速,而是依照本发明的原理将电子加速到光电导体层,以通过指向光电导体层的入射辐射图形来替代从层移除的电荷,该层通过透明层,导电 用作辐射窗的材料。 实现了大面积,低成本,小型,平板传感器。 透明导电层可以被分隔以减小大面积传感器的杂散电容,并且分隔的导电层允许并行读出操作模式。

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