Electron beam control system
    1.
    发明授权
    Electron beam control system 失效
    电子束控制系统

    公开(公告)号:US4437008A

    公开(公告)日:1984-03-13

    申请号:US256682

    申请日:1981-04-23

    CPC分类号: H01J37/24 H01J37/302

    摘要: In an electron beam control system wherein manual adjusting means is used for adjusting currents to flow through two deflection coils which serve to deflect an electron beam in directions of two, x and y axes, respectively; an electron beam control system wherein the manual adjusting means comprises a joy stick type variable resistor which can simultaneously deliver coil deflection signal components in the directions of the two axes through a single operation, and the signal components from the variable resistor are applied to the corresponding deflection coils as adjusting currents.

    摘要翻译: 在电子束控制系统中,其中使用手动调节装置来调节流过两个偏转线圈的电流,这两个偏转线圈分别用于在两个x和y轴的方向上偏转电子束; 电子束控制系统,其中手动调节装置包括操纵杆式可变电阻器,其可以通过单次操作同时在两个轴线的方向上传送线圈偏转信号分量,并且来自可变电阻器的信号分量被施加到相应的 偏转线圈作为调整电流。

    Method of forming resist micropattern
    5.
    发明授权
    Method of forming resist micropattern 失效
    形成抗蚀剂微图案的方法

    公开(公告)号:US4634645A

    公开(公告)日:1987-01-06

    申请号:US721306

    申请日:1985-04-09

    IPC分类号: G03F7/00 G03F7/40 G03C5/00

    摘要: A resist pattern is formed on a substrate by forming a resist on a substrate and radiating an energy beam carrying predetermined pattern information onto the resist, thereby forming a recessed pattern in a surface portion of the resist so as not to extend through the resist. A flat mask layer is formed on the resist including the recessed pattern. The mask layer is uniformly etched along a direction of thickness thereof until at least a surface of the resist is exposed to allow the mask layer to remain on at least a bottom of the recessed pattern, thereby forming a mask pattern comprising the remaining residual mask layer. Finally, the resist is etched by using the mask pattern as an etching mask.

    摘要翻译: 通过在基板上形成抗蚀剂并将载有预定图案信息的能量束辐射到抗蚀剂上,从而在抗蚀剂的表面部分形成凹陷图形,从而在基板上形成抗蚀剂图案,以便不延伸通过抗蚀剂。 在包括凹陷图案的抗蚀剂上形成平坦的掩模层。 沿其厚度方向均匀地蚀刻掩模层,直到抗蚀剂的至少一个表面露出,以使掩模层保持在至少凹陷图案的底部,从而形成包括剩余的残留掩模层的掩模图案 。 最后,通过使用掩模图案作为蚀刻掩模蚀刻抗蚀剂。

    Exposure method with electron beam exposure apparatus
    6.
    发明授权
    Exposure method with electron beam exposure apparatus 失效
    电子束曝光装置曝光方法

    公开(公告)号:US4489241A

    公开(公告)日:1984-12-18

    申请号:US386579

    申请日:1982-06-09

    摘要: An exposure method with an electron beam exposure apparatus in which an electron beam is emitted onto a substrate such as a silicon wafer on which an electron-beam sensitive resist is coated, thereby directly forming or writing patterns. A substrate having thereon a number of chips are divided into blocks, which each contain a plurality of chips. Marks are provided on each of the blocks, the positions of the marks are detected and the writing exposure positions of the chips within each block are modified on the basis of the detection results. According to this invention, efficient writing exposure can be made with high accuracy.

    摘要翻译: 具有电子束曝光装置的曝光方法,其中电子束被发射到诸如其上涂覆有电子束敏感抗蚀剂的硅晶片的基板上,从而直接形成或书写图案。 其上具有多个芯片的基板被分成块,每个块包含多个芯片。 在每个块上提供标记,检测标记的位置,并且基于检测结果修改每个块内的码片的写入曝光位置。 根据本发明,可以高精度地进行有效的写入曝光。

    Mark position detection system for use in charged particle beam apparatus
    8.
    发明授权
    Mark position detection system for use in charged particle beam apparatus 失效
    用于带电粒子束装置的标记位置检测系统

    公开(公告)号:US4808829A

    公开(公告)日:1989-02-28

    申请号:US63018

    申请日:1987-06-17

    CPC分类号: H01J37/3045

    摘要: A mark position detection system used in a charged particle beam apparatus and including detection circuit for detecting a reflected electron generated at a mark when the mark is scanned with a charged particle beam, to obtain a mark signal, and signal processing circuit for comparing the mark signal from the detection circuit with a predetermined threshold level to find the position of the charged particle beam at a time the mark signal traverses the threshold level, thereby detecting the position of a mark edge, is disclosed in which, when the mark signal traverses the threshold level and has a peak value exceeding a predetermined value, it is determined by the signal processing circuit that the position of the charged particle beam at a time point at which the mark signal traverses the threshold level is the position of the mark.

    摘要翻译: 一种用于带电粒子束装置的标记位置检测系统,包括:检测电路,用于检测用带电粒子束扫描标记时在标记处产生的反射电子,以获得标记信号;以及信号处理电路,用于比较标记 来自检测电路的信号具有预定的阈值电平,以在标记信号穿过阈值电平的时候找到带电粒子束的位置,从而检测标记边缘的位置,其中当标记信号穿过 阈值电平并且具有超过预定值的峰值,则由信号处理电路确定在标记信号穿过阈值电平的时间点处的带电粒子束的位置是标记的位置。

    Projection exposure method and apparatus
    9.
    发明授权
    Projection exposure method and apparatus 失效
    投影曝光方法及装置

    公开(公告)号:US5636004A

    公开(公告)日:1997-06-03

    申请号:US515583

    申请日:1995-08-16

    IPC分类号: G03F7/20 G03B27/32 H01L21/30

    摘要: In a projection exposure method of irradiating illumination light from an illumination light source onto a photomask made of a transparent substrate with a periodic mask pattern, and projecting the resultant transmitted light from the photomask on a wafer through a projection system, thereby forming an optical image of the mask pattern on the wafer, projection/exposure with respect to the wafer is performed by a main exposure operation and a sub-exposure operation to be performed after the main exposure operation. The main exposure operation is performed by irradiating the photomask with the illumination light whose coherency becomes 0.3 or less when a period L of the mask pattern on the image plane of the optical system is not more than a value obtained by doubling an exposure wavelength .lambda. of the illumination light source, and dividing the resultant value by a numerical aperture of the projection system. The sub-exposure operation is performed by irradiating the photomask with the illumination light having a coherency of 0.3 or less at at least one of positions separated from a position in the main exposure operation in the optical axis direction by .DELTA.=.lambda./[2{1-(1-.lambda..sup.2 /L.sup.2).sup.1/2 }], thereby forming a periodic pattern having a period 1/2 the period L on the wafer.

    摘要翻译: 在将照明光源的照明光照射到由周期性掩模图案的透明基板构成的光掩模上的投影曝光方法中,通过投影系统将来自光掩模的透过光投射到晶片上,由此形成光学图像 通过在主曝光操作之后进行的主曝光操作和副曝光操作来进行相对于晶片的投影/曝光。 主曝光操作是通过在光学系统的像面上的掩模图案的周期L不大于通过使光学系统的像面上的曝光波长λ倍增获得的值的情况下照射具有相干性为0.3以下的照明光的光掩模来进行的 照明光源,并将得到的值除以投影系统的数值孔径。 副曝光操作是通过在与主曝光操作中在光轴方向上的位置分开的至少一个位置处具有0.3或更小的相干性的照明光照射光掩模来执行的,即DELTA =λ/ [2 { 1-(1-lambda 2 / L2)+ E,fra 1/2 + EE}],从而形成具有周期+ E,fra 1/2 + EE的晶片周期L的周期性图案。