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    • 3. 发明申请
    • REAL-TIME RETICLE CURVATURE SENSING
    • 实时感应曲线感应
    • WO2014032897A1
    • 2014-03-06
    • PCT/EP2013/066145
    • 2013-08-01
    • ASML HOLDING N.V.ASML NETHERLANDS B.V.
    • WARD, ChristopherLEENDERS, MartinusSCHUSTER, Mark,VALENTIN, Christiaan
    • G03F7/20G03F7/24
    • G03F7/70616G03F1/14G03F7/24G03F7/703G03F7/70783G03F7/7085G03F9/7026
    • A system and method that bends a reticle and senses a curvature of a bent reticle in real-time. The system includes movable reticle stage, reticle vacuum clamps, sensor systems, and reticle bender. The reticle bender comprises piezo actuators. The sensor systems comprises measurement targets and corresponding sensors. The sensors are attached to the movable reticle stage and the measurement targets are attached to the reticle clamps, the reticle bender, or on reticle surfaces. The system is configured to determine a width of the reticle or distance between measurement targets at opposing ends of the reticle, measure a first rotational angle at a first end of the reticle, and measure a second local rotational angle at a second end of the reticle that is opposite to the first end. Based on the width or distance and the first and second angles, a field curvature of the reticle is determined.
    • 弯曲掩模版并实时感测弯曲掩模版的曲率的系统和方法。 该系统包括可动标线台,光罩真空夹,传感器系统和光罩弯曲机。 光罩弯曲机包括压电致动器。 传感器系统包括测量目标和相应的传感器。 传感器连接到可动标线片台上,并且测量目标附着到标线夹,标线弯曲器或掩模版表面上。 该系统被配置为确定掩模版的宽度或在掩模版的相对端处的测量目标之间的距离,测量在光罩的第一端处的第一旋转角度,并且在光罩的第二端处测量第二局部旋转角度 这与第一端相反。 基于宽度或距离以及第一和第二角度,确定掩模版的场曲率。
    • 6. 发明申请
    • ACTIVE TORSION MODE CONTROL FOR STAGE
    • 主动扭矩模式控制
    • WO2013164145A1
    • 2013-11-07
    • PCT/EP2013/056765
    • 2013-03-28
    • ASML HOLDING N.V.
    • WARD, Christopher
    • G03F7/20
    • G03F7/70783G03F7/7085G03F7/709
    • A lithographic apparatus includes an illumination system, a substrate table, a projection system, and a sensor. The illumination system is configured to condition a radiation beam and a support constructed to support a patterning device. The patterning device is capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam. The substrate table is constructed to hold a substrate. The projection system is configured to project the patterned radiation beam onto a target portion of the substrate. The sensor is configured to detect a shear stress along at least a portion of a length of the support and one or more actuators configured to apply one or more torsional mode dampening forces to the support to counteract the detected shear stress.
    • 光刻设备包括照明系统,衬底台,投影系统和传感器。 照明系统被配置为调节辐射束和构造成支撑图案形成装置的支撑。 图案形成装置能够在其横截面中赋予辐射束图案以形成图案化的辐射束。 衬底台被构造成保持衬底。 投影系统被配置为将图案化的辐射束投影到基板的目标部分上。 传感器构造成沿着支撑件的长度的至少一部分检测剪切应力,以及一个或多个致动器被构造成将一个或多个扭转模式阻尼力施加到支撑件上以抵消检测到的剪切应力。