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    • 3. 发明申请
    • LITHOGRAPHIC APPARATUS, DEVICE MANUFACTURING METHOD, AND METHOD OF APPLYING A PATTERN TO A SUBSTRATE
    • 光刻设备,设备制造方法和将图案应用于基板的方法
    • US20110164229A1
    • 2011-07-07
    • US12969326
    • 2010-12-15
    • Frank STAALSMarcus Adrianus Van De Kerkhof
    • Frank STAALSMarcus Adrianus Van De Kerkhof
    • G03B27/42G01B11/24
    • G03F9/7003G03F9/7034
    • A lithographic apparatus includes a patterning subsystem for transferring a pattern from a patterning device onto a substrate controlled in accordance with recorded measurements of level variations across a surface of the substrate. A level sensor is provided for projecting a level sensing beam of radiation to reflect from a location on the substrate surface and for detecting the reflected sensing beam to record the surface level at said location. The level sensor incorporates at least one moving optical element to scan the substrate surface by optical movement in at least one dimension to obtain measurements of surface level at different locations without mechanical movement between the level sensor and the substrate. Optical path length equalization measures may be employed, using shaped reflectors and/or additional moving mirrors, to avoid focus variation during the scan.
    • 光刻设备包括图案化子系统,用于将图案从图案形成装置转移到基于通过衬底的表面上记录的电平变化的测量值而被控制的衬底上。 提供了一种液位传感器,用于投射水平感测光束以从基板表面上的位置反射并检测反射的感测光束以记录在所述位置处的表面水平。 水平传感器包括至少一个移动光学元件,以通过至少一个维度的光学运动来扫描基板表面,以获得在不同位置处的表面水平的测量,而不会在液位传感器和基板之间进行机械运动。 可以采用光路长度均衡措施,使用成形的反射器和/或附加的移动反射镜,以避免扫描期间的焦点变化。