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    • 1. 发明申请
    • LITHOGRAPHY ALIGNMENT SYSTEM AND METHOD USING NDSE-BASED FEEDBACK CONTROL
    • LITHOGRAPHY对准系统和使用基于NDSE的反馈控制的方法
    • WO2008048595A2
    • 2008-04-24
    • PCT/US2007/022067
    • 2007-10-16
    • HEWLETT-PACKARD DEVELOPMENT COMPANY, L. P.PARK, InkyuWU, WeiGAO, JunPICCIOTTO, Carl
    • PARK, InkyuWU, WeiGAO, JunPICCIOTTO, Carl
    • G03F9/00
    • G03F9/7038G03F9/7088G03F9/7092G03F9/7096
    • A contact lithography alignment system (500) and methods (100, 200, 400) use nanoscale displacement sensing and estimation (nDSE) 300, 300' to maintain an alignment and compensate for a disturbance of one or more objects (510) during contact lithography. A method (100) of maintaining an alignment includes establishing (110) an initial alignment of one or more objects and employing (120, 200) nDSE-based feedback control of relative positions of one or more of the objects to maintain the alignment during contact lithography. A method (400) of disturbance compensation includes acquiring (410) a first image, acquiring (210, 420) a second image, estimating (220, 430) an alignment error using (120, 200) nDSE applied to the first and second images, and adjusting (230, 440) a relative position to reduce the alignment error. The contact lithography system (500) includes an optical sensor (520), a feedback processor (530, 600) providing nDSE and a position controller (540) that adjusts relative positions of one or more objects to reduce an alignment error determined using the nDSE.
    • 接触光刻对准系统(500)和方法(100,200,400)使用纳米尺度位移感测和估计(nDSE)300,300'来保持对准并补偿接触光刻期间的一个或多个物体(510)的干扰 。 保持对准的方法(100)包括建立(110)一个或多个对象的初始对准,并采用(120,200)基于nDSE的反馈控制,以反映一个或多个对象的相对位置以保持接触期间的对准 光刻。 干扰补偿的方法(400)包括获取(410)第一图像,获取(210,420)第二图像,使用应用于所述第一和第二图像的(120,200)nDSE估计(220,430)对准误差 ,并调整(230,440)相对位置以减小对准误差。 接触光刻系统(500)包括光学传感器(520),提供nDSE的反馈处理器(530,600)和调整一个或多个物体的相对位置以减少使用nDSE确定的对准误差的位置控制器(540) 。
    • 5. 发明申请
    • DISPLACEMENT ESTIMATION SYSTEM AND METHOD
    • 位移估计系统和方法
    • WO2006026213A1
    • 2006-03-09
    • PCT/US2005/029702
    • 2005-08-19
    • HEWLETT-PACKARD DEVELOPMENT COMPANY L.P.PICCIOTTO, Carl E.GAO, Jun
    • PICCIOTTO, Carl E.GAO, Jun
    • G06K9/64
    • G06T7/254
    • A displacement estimation system (100 / 400 / 600) comprising a data acquisition system (106) and a processing system (108) is provided. The data acquisition system is configured to capture a first frame (112A) from a first substrate (102) including a first pattern (104) at a first time and capture a second frame (112B) from a second substrate (102) including a second pattern (104) at a second time subsequent to the first time. The first pattern and the second pattern are substantially identical. The processing system is configured to calculate a displacement (306) between the first pattern and the second pattern using the first frame and the second frame.
    • 提供了包括数据采集系统(106)和处理系统(108)的位移估计系统(100/400/600)。 数据采集​​系统配置成在第一时间从包括第一图案(104)的第一基板(102)捕获第一框架(112A),并从第二基板(102)捕获包括第二框架(102)的第二框架(112B) 图案(104)在第一次之后的第二时间。 第一图案和第二图案基本相同。 处理系统被配置为使用第一帧和第二帧来计算第一图案和第二图案之间的位移(306)。
    • 9. 发明申请
    • MULTIPLE LAYER ALIGNMENT SENSING
    • 多层排列感应
    • WO2006058192A3
    • 2006-08-03
    • PCT/US2005042694
    • 2005-11-23
    • HEWLETT PACKARD DEVELOPMENT COPICCIOTTO CARL EGAO JUN
    • PICCIOTTO CARL EGAO JUN
    • G03F9/00
    • G03F9/7003G03F9/7038G03F9/7088
    • Using an imaging system (104) in relation to a plurality of material layers (114, 116) is described, the material layers being separated by a distance greater than a depth of field of the imaging system. A focal plane (106) of the imaging system and a first (114) of the plurality of material layers are brought into correspondence. A first image including at least a portion of the first material layer (114) having a first feature of interest thereon (116) is stored. The focal plane (106) of the imaging system and a second (118) of the plurality of material layers are brought into correspondence. A second image including at least a portion of the second material layer (118) having a second feature of interest thereon (120) is acquired. The first and second images are processed for automatic computation of an alignment measurement between the first and second features of interest.
    • 描述了关于多个材料层(114,116)使用成像系统(104),材料层以大于成像系统的景深的距离分开。 使成像系统的焦平面(106)和多个材料层中的第一个(114)对应。 存储包括其上具有第一感兴趣特征(116)的第一材料层(114)的至少一部分的第一图像。 成像系统的焦平面(106)和多个材料层中的第二个(118)对应。 获取包括其上具有第二感兴趣特征(120)的第二材料层(118)的至少一部分的第二图像。 处理第一和第二图像以自动计算第一和第二感兴趣特征之间的对准测量值。