Large area uniform ion beam formation
    2.
    发明授权
    Large area uniform ion beam formation 失效
    大面积均匀的离子束形成

    公开(公告)号:US5825038A

    公开(公告)日:1998-10-20

    申请号:US756656

    申请日:1996-11-26

    IPC分类号: H01J37/30 H01J37/317

    摘要: A high throughput ion implantation system that rapidly and efficiently processes large quantities of flat panel displays. The ion implantation system has an ion chamber generating a stream of ions, a plasma electrode having an elongated slot with a high aspect ratio for shaping the stream of ions into a ribbon beam, and an electrode assembly for directing the stream of ions towards a workpiece. The plasma electrode can include a split extraction system having a plurality of elongated slots oriented substantially parallel to each other. The ion implantation system can also have a diffusing system for homogenizing the ion stream. Various exemplary diffusing systems include an apertured plate having an array of openings, diffusing magnets, diffusing electrodes, and dithering magnets.

    摘要翻译: 快速有效地处理大量平板显示器的高通量离子注入系统。 离子注入系统具有产生离子流的离子室,具有用于将离子流成形为带状束的高纵横比的细长槽的等离子体电极,以及用于将离子流引向工件的电极组件 。 等离子体电极可以包括具有基本上彼此平行取向的多个细长狭缝的分离提取系统。 离子注入系统还可以具有用于使离子流均匀化的扩散系统。 各种示例性扩散系统包括具有开口阵列,扩散磁体,扩散电极和抖动磁体的有孔板。

    Scanning treatment apparatus
    7.
    发明授权
    Scanning treatment apparatus 失效
    扫描处理装置

    公开(公告)号:US4580058A

    公开(公告)日:1986-04-01

    申请号:US594756

    申请日:1984-03-29

    IPC分类号: H01J37/317 G21K1/08

    CPC分类号: H01J37/3171

    摘要: Scanning, as of ion beams, in which two radially aligned devices, e.g. ion source and extraction electrode, are isolated from and accurately positioned with respect to one another, while the second device moves arcuately to produce a scanning effect. Advantageously, while one device, e.g. the ion source, is moved by a rotating shaft, the second device, e.g., the extraction electrode, moves on a curved track centered on the axis of the shaft. While the devices are disposed within respective parts of a vacuum chamber, a mechanical synchronizing mechanism, located outside of the chamber, moves the devices via seals. The specific mechanism shown comprises a driven lead screw, an insulating crank for driving a shaft on which an ion source is mounted, and an arcuate motion tracking device which transmits the motion of the insulating crank into the chamber for driving the extraction electrode upon a curved track.

    摘要翻译: 像离子束一样扫描,其中两个径向排列的装置,例如, 离子源和引出电极相对于彼此隔离并且被精确定位,而第二装置弧形移动以产生扫描效果。 有利地,虽然一个装置,例如 离子源通过旋转轴移动,第二装置(例如,提取电极)在以轴的轴线为中心的弯曲轨道上移动。 当装置设置在真空室的相应部分内时,位于室外的机械同步机构通过密封件移动装置。 所示的具体机构包括从动导螺杆,用于驱动其上安装有离子源的轴的绝缘曲柄,以及弓形运动跟踪装置,其将绝缘曲柄的运动传递到用于驱动提取电极的腔室中的弯曲 跟踪。

    Ion accelerator for use in ion implanter
    8.
    发明授权
    Ion accelerator for use in ion implanter 失效
    离子加速器用于离子注入机

    公开(公告)号:US5729028A

    公开(公告)日:1998-03-17

    申请号:US789629

    申请日:1997-01-27

    申请人: Peter H. Rose

    发明人: Peter H. Rose

    CPC分类号: H05H5/06

    摘要: An ion accelerator for use in an ion beam implanter. The accelerator forms milliampere beams of heavy ions such as boron and phosphorous in a configuration in which the terminal ion source is replaced by a neutral beam injector. The neutral beam is formed at ground by the conversion of a focused beam of positive ions to neutral ions in a charge exchange canal. The neutral beam so formed is stripped of one or more electrons in a gas or vapor filled canal in the high voltage terminal. A 180.degree. analyzing magnet located in the high voltage terminal analyzes and directs a selected charge state to an acceleration tube parallel to the neutral beam injection tube where the selected positive ions are accelerated to ground potential. To extend the energy range of the accelerator below the injection energy, a high voltage insulator is provided to insulate the ground end of the positive ion acceleration tube permitting the acceleration tube and terminal to be uniformly biased at a negative voltage to decelerate the beam to very low energies at a location close to the point of use. An accelerator assembly includes a 90.degree. analyzing magnet in the high voltage terminal.

    摘要翻译: 用于离子束注入机的离子加速器。 在末端离子源被中性射束注射器代替的结构中,加速器形成毫安的重离子束如硼和磷。 通过在电荷交换管中将聚合的正离子束转变成中性离子,中性束在地面形成。 如此形成的中性光束在高压端子中的气体或蒸气填充的管中被剥离出一个或多个电子。 位于高压端子的180°分析磁体分析并将选定的充电状态引导到平行于中性束注入管的加速管,其中所选择的正离子被加速到地电位。 为了将加速器的能量范围扩大到注入能量以下,提供高压绝缘体以使正离子加速管的接地端绝缘,允许加速管和端子被均匀地偏压在负电压以将梁减速到非常 在靠近使用点的位置处的低能量。 加速器组件包括在高压端子中的90°分析磁体。

    Treating work pieces with electro-magnetically scanned ion beams
    9.
    发明授权
    Treating work pieces with electro-magnetically scanned ion beams 失效
    用电磁扫描离子束处理工件

    公开(公告)号:US4804852A

    公开(公告)日:1989-02-14

    申请号:US32513

    申请日:1987-03-30

    IPC分类号: H01J37/317 G21K5/02

    CPC分类号: H01J37/3172

    摘要: A magnetic scanning technique for sweeping an ion beam across an implantation target, such as a semiconductor wafer, by means of modulating the energy of a beam and directing it through an analyzer magnet, which effects a scanning motion of the beam of constant intensity, the wave form for the modulation being selected to take into account that the areal density of the ions in the scanned beam varies dependently with the amount of displacement of the beam from a reference point. An ion scan can be obtained in which the ions travel in parallel paths and enter the target at a constant desired angle throughout the scan. The technique is applicable to targets held stationary or rotated during implant. By employing predetermined modulation wave forms which are adapted to other parameters of the selected system, a desired scan distribution of ions can be obtained, for instance a uniform distribution in X and Y directions. As applied to a semiconductor wafer rotated on a disc past the ion beam, the technique solves the problem of compensating for the fact that the area of a ring on the spinning disc depends linearly on the radius of the ring. The technique makes use of the properties of ion beams in uniform magnetic fields to produce a radial dependence of the density of the ion beam on the wafer which precisely cancels the radial dependence of circumferential length as a function of radius. The magnetic scanning technique is well adapted for use with large wafers held on rotating discs and has advantages over the conventional techniques of either electrostatic or mechanical scanning. The technique is readily adapted to a variety of other wafer transport systems including rotating conveyors and linear transports.

    摘要翻译: 一种磁扫描技术,用于通过调制光束的能量并引导其通过分析器磁体来影响离子束穿过诸如半导体晶片的注入靶,其实现恒定强度的束的扫描运动, 波形被选择以考虑扫描光束中的离子的面密度随着光束从参考点的位移量而变化。 可以获得离子扫描,其中离子在平行路径中行进并且在整个扫描期间以恒定的期望角度进入目标。 该技术适用于在植入期间保持静止或旋转的目标。 通过采用适合于所选系统的其它参数的预定调制波形,可以获得所需的离子扫描分布,例如在X和Y方向上的均匀分布。 当应用于在盘上经过离子束旋转的半导体晶片时,该技术解决了补偿旋转盘上的环的面积与环的半径成线性关系的问题。 该技术利用均匀磁场中的离子束的性质来产生离子束在晶片上的密度的径向依赖性,其精确地抵消作为半径的函数的圆周长度的径向依赖性。 磁扫描技术非常适合用于保持在旋转盘上的大晶片,并且具有优于静电或机械扫描的常规技术的优点。 该技术易于适用于各种其他晶片输送系统,包括旋转输送机和线性输送机。

    Charge density detector for beam implantation
    10.
    发明授权
    Charge density detector for beam implantation 失效
    光束注入电荷密度检测器

    公开(公告)号:US4675530A

    公开(公告)日:1987-06-23

    申请号:US753736

    申请日:1985-07-11

    摘要: Apparatus for accurately measuring the charge distribution, and hence the voltage, on a non-conducting workpiece during ion bombardment. The invention is based on the principal that the charge on the surface of the workpiece induces equal and opposite charge on the surface of an isolated proof plane conductor placed in front of it. A workpiece is moved at a known speed in front of the proof plane, whose dimensions are small compared to the workpiece. The measurement of the time distribution of the induced charge on the proof plane is a measure of the spatial distribution of the charge on the bombarded workpiece. The proof plane surface is isolated from currents which might flow directly to its surface. The invention has utility for several purposes important to the semiconductor industry: monitoring the surface voltage distribution on a given workpiece during ion bombardment; certification to the device user that the workpiece was implanted under specified values or limits of surface voltage distribution; control of the surface charge distribution on the workpiece through the feedback of the charge-measurement signal to a device which compensates the charge on the workpiece.

    摘要翻译: 用于在离子轰击期间精确地测量非导电工件上的电荷分布以及因此电压的装置。 本发明基于这样的原理,即工件表面上的电荷在放置在其前面的隔离的防护平面导体的表面上产生相等且相反的电荷。 工件在校验面前方以已知速度移动,其尺寸与工件相比较小。 感测电荷在验证平面上的时间分布的测量是对被轰击的工件上的电荷的空间分布的度量。 防爆平面与可能直接流到其表面的电流隔离。 本发明可用于半导体工业重要的几个目的:在离子轰击期间监测给定工件上的表面电压分布; 对设备用户认证工件在表面电压分布的指定值或极限值下进行认证; 通过将电荷测量信号反馈到补偿工件上的电荷的装置来控制工件上的表面电荷分布。