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    • 2. 发明申请
    • SUBSTRATE ALIGNMENT USING LINEAR ARRAY SENSOR
    • 使用线性阵列传感器进行基板对准
    • WO2007027960A2
    • 2007-03-08
    • PCT/US2006034129
    • 2006-08-29
    • PHOTON DYNAMICS INCMCGINLEY BARRYJONES LLOYDPUN DIGBYBARNETT ROBERT
    • MCGINLEY BARRYJONES LLOYDPUN DIGBYBARNETT ROBERT
    • G01N23/00
    • G01B11/272G03F9/7011G03F9/7088
    • The position of a substrate's edge is detected using a substrate alignment system that includes, in part, a light source, an optical module adapted to receive a light emanating from the light source to form a multi-dimensional light beam; and an array sensor positioned at a focal plane of the optical module and oriented substantially perpendicular to the sample's edge. The substrate alignment system detects the substrate's edge position as soon as the substrate is loaded and placed within the capture range of the linear array sensor. As long as the substrate's edge position is within the capture range, the substrate does not have to be moved to determine its position relative to the tool's coordinate space. The capture range is substantially larger than the position accuracy required. The sensor array includes a multitude of sensors disposed along one or more rows.
    • 使用衬底对准系统检测衬底边缘的位置,所述衬底对准系统部分地包括光源,适于接收从光源发出的光以形成多维光束的光学模块; 以及阵列传感器,其定位在光学模块的焦平面处并且基本上垂直于样本的边缘定向。 一旦衬底被加载并放置在线性阵列传感器的捕获范围内,衬底对准系统就检测衬底的边缘位置。 只要衬底的边缘位置在捕获范围内,衬底就不必移动以确定其相对于工具坐标空间的位置。 捕捉范围远远大于所需的位置精度。 传感器阵列包括沿着一行或多行布置的多个传感器。