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    • 3. 发明授权
    • Stage control with reduced synchronization error and settling time
    • 减少同步误差和稳定时间的舞台控制
    • US06260282B1
    • 2001-07-17
    • US09049801
    • 1998-03-27
    • Bausan YuanSusumu MakinouchiHideyaki Hashimoto
    • Bausan YuanSusumu MakinouchiHideyaki Hashimoto
    • H01L2168
    • G03F7/70358G03F7/70725
    • A positioning system used, by way of example, for lithography, uses the position of the wafer stage as the trajectory command for the reticle fine stage control circuit. The reticle fine stage position is combined with the position of the wafer stage to generate a synchronous error. The reticle fine stage control circuit uses a Jacobian differential transformation to convert the synchronous error into an positional error for the center of gravity of the reticle fine stage. Thus, any inaccuracies due to measurement errors caused by rotation of reticle fine stage are avoided. A controller filter circuit uses the positional error for the center of gravity to calculate the force on the center of gravity that will minimize the synchronous error. The controller filter circuit includes saturation limited integration behavior that minimizes the settling time. A feedforward loop also generates a feedforward force, which reduces settling time, and is combined with the force signal from the controller filter. A force coordinate transformation circuit receives the summed forces and calculates the forces to be generated by the actuators connected to reticle fine stage that will drive reticle fine stage to the desired position to reduce the synchronous error.
    • 作为示例,用于光刻的定位系统使用晶片台的位置作为标线片精细级控制电路的轨迹指令。 标线片精细位置与晶片台的位置相结合以产生同步误差。 光栅精细级控制电路使用雅可比差分变换将同步误差转换为光罩精细级的重心的位置误差。 因此,避免了由于光罩精细台的旋转引起的测量误差导致的任何不准确。 控制器滤波器电路使用重心的位置误差来计算重心的力,这将使同步误差最小化。 控制器滤波器电路包括使稳定时间最小化的饱和有限积分行为。 前馈回路还产生一个前馈力,这减少了建立时间,并与来自控制器滤波器的力信号相结合。 力坐标变换电路接收累加力并计算由连接到标线片精细台的致动器产生的力,该致动器能将光栅精细级驱动到所需位置以减小同步误差。
    • 5. 发明申请
    • Real-time through lens image measurement system and method
    • 实时透镜图像测量系统及方法
    • US20050286050A1
    • 2005-12-29
    • US10882131
    • 2004-06-29
    • Bausan YuanMartin LeeNobutaka MagomeHidemi Kawai
    • Bausan YuanMartin LeeNobutaka MagomeHidemi Kawai
    • G01B11/00G03F7/20
    • G03F7/70591
    • Embodiments of the present invention are directed to an apparatus and a method for through lens measurement for a projection system. In one embodiment, an apparatus for through lens image measurement comprises a projection lens housing containing lens elements therein, and a reflective member having a center of curvature on a first plane. The reflective member is attached to the lens housing. An optical system includes a light source, a position detector, and one or more optical elements. The optical system is attached to the lens housing and configured to direct a light from the light source through the lens elements to the reflective member which reflects the light back through the lens elements and toward the position detector. The position detector is configured to detect any image shift at the first plane due to misalignment of the lens elements with respect to the lens housing.
    • 本发明的实施例涉及一种用于投影系统的透镜测量的装置和方法。 在一个实施例中,用于透镜图像测量的装置包括在其中容纳透镜元件的投影透镜壳体和在第一平面上具有曲率中心的反射构件。 反射构件附接到透镜壳体。 光学系统包括光源,位置检测器和一个或多个光学元件。 光学系统附接到透镜壳体并且被配置为将来自光源的光通过透镜元件引导到反射构件,反射构件将光反射回透镜元件并朝向位置检测器。 位置检测器被配置为由于透镜元件相对于透镜壳体的未对准而检测在第一平面处的任何图像偏移。
    • 6. 发明申请
    • Moving mechanism with high bandwidth response and low force transmissibility
    • 具有高带宽响应和低力传递性的移动机构
    • US20060033903A1
    • 2006-02-16
    • US10918182
    • 2004-08-13
    • Bausan YuanMartin LeeW. Novak
    • Bausan YuanMartin LeeW. Novak
    • G03B27/62
    • G03F7/70775G03F7/70725G03F7/70758G03F7/70766
    • Methods and apparatus for providing a stage with a relatively high positioning bandwidth and low transmissibility are disclosed. According to one aspect of the present invention, a method for positioning a stage including providing a first force of a first magnitude to the stage using a primary actuator and providing a second force of a second magnitude to the stage using a secondary actuator. The first force is arranged to cause the stage to translate along a first axis. The secondary actuator is also arranged to cause the stage to translate along the first axis, and has a relatively high positioning bandwidth. The first force is arranged to enable the stage to be relatively coarsely positioned and the second force is arranged to enable the stage to be relatively finely positioned. In one embodiment, the secondary actuator is one of a voice coil motor and a piezoelectric motor.
    • 公开了提供具有相对高的定位带宽和低传输性的平台的方法和装置。 根据本发明的一个方面,一种用于定位平台的方法,包括使用主致动器向舞台提供第一幅度的第一力,并使用辅助致动器向舞台提供第二大小的第二力。 第一力布置成使得台架沿着第一轴线平移。 次级致动器还被布置成使得平台沿着第一轴线平移,并且具有相对较高的定位带宽。 第一力被布置成使得台架能够相对粗略地定位,并且第二力被布置成使得台架能够相对精细地定位。 在一个实施例中,次级致动器是音圈电动机和压电电动机之一。
    • 8. 发明申请
    • Projection Optical Device And Exposure Apparatus
    • 投影光学装置和曝光装置
    • US20080068568A1
    • 2008-03-20
    • US11662330
    • 2005-07-18
    • Akimitsu EbiharaMartin LeeBausan Yuan
    • Akimitsu EbiharaMartin LeeBausan Yuan
    • G03B27/42G03B27/54
    • G03F7/709G03F7/70808G03F7/70833G03F7/70891
    • A projection optical device includes a projection optical system which projects an image of a pattern, a support device having a flexible structure to support the projection optical system, and a positioning device having an actuator to position the projection optical system. The projection optical device can include a frame to which one end of the flexible structure is attached. The projection optical system may hang from the frame via the support device, or it may be supported from below by the support device. A projection optical device also can include a liquid supply which supplies a temperature-controlled liquid to a side surface of a projection optical system utilizing gravity to cause the temperature-controlled liquid to flow along the side surface of the projection optical system.
    • 投影光学装置包括投影图案的投影光学系统,具有柔性结构的支撑装置以支撑投影光学系统,以及具有用于定位投影光学系统的致动器的定位装置。 投影光学装置可以包括附接有柔性结构的一端的框架。 投影光学系统可以经由支撑装置从框架悬挂,或者可以由支撑装置从下方支撑投影光学系统。 投影光学装置还可以包括液体供应源,其利用重力将温度控制的液体供应到投影光学系统的侧表面,以使温度控制的液体沿着投影光学系统的侧表面流动。
    • 10. 发明授权
    • Active vibration isolation system having pressure control
    • 主动隔振系统具有压力控制
    • US06590639B1
    • 2003-07-08
    • US09663184
    • 2000-09-15
    • Bausan YuanMichael BinnardMartin Lee
    • Bausan YuanMichael BinnardMartin Lee
    • G03B2762
    • G03F7/70825G03F7/709
    • An active vibration isolation system includes a pneumatic control system and an electronic control system. The pneumatic control system supports a mass sensitive to vibration and isolates the mass from high frequency external disturbances. The electronic control system isolates the mass from low frequency external disturbances. The pneumatic control system includes a compliance chamber filled with a fluid to pneumatically support the mass, apparatus for directly measuring a pressure level in the compliance chamber, and apparatus for controlling the pressure level to minimize the effects of pressure variation in the compliance chamber. The measuring apparatus includes an instrument to measure an absolute pressure level of the compliance chamber or an instrument to measure a differential pressure level between the compliance chamber and a reference chamber having a predetermined pressure level.
    • 主动隔振系统包括气动控制系统和电子控制系统。 气动控制系统支持对振动的质量敏感,并将质量与高频外部干扰隔离。 电子控制系统将质量与低频外部干扰隔离开来。 气动控制系统包括填充有流体的顺应室,用于气动地支撑质量,用于直接测量顺应室中的压力水平的装置,以及用于控制压力水平的装置,以使顺应室中的压力变化的影响最小化。 测量装置包括用于测量柔性室的绝对压力水平的仪器或用于测量柔性室与具有预定压力水平的参考室之间的压差水平的仪器。