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    • 8. 发明申请
    • INSPECTION GUIDED OVERLAY METROLOGY
    • 检查指导覆盖度量
    • WO2011085255A3
    • 2011-11-10
    • PCT/US2011020587
    • 2011-01-07
    • KLA TENCOR CORPCHANG ELLISWIDMANN AMIRPARK ALLEN
    • CHANG ELLISWIDMANN AMIRPARK ALLEN
    • H01L21/66
    • G01N21/9501G01N21/95607G01N2021/8822G03F7/70633G03F7/7065H01L22/12H01L2924/0002H01L2924/00
    • Inspection guided overlay metrology may include performing a pattern search in order to identify a predetermined pattern on a semiconductor wafer, generating a care area for all instances of the predetermined pattern on the semiconductor wafer, identifying defects within generated care areas by performing an inspection scan of each of the generated care areas, wherein the inspection scan includes a low-threshold or a high sensitivity inspection scan, identifying overlay sites of the predetermined pattern of the semiconductor wafer having a measured overlay error larger than a selected overlay specification utilizing a defect inspection technique, comparing location data of the identified defects of a generated care area to location data of the identified overlay sites within the generated care area in order to identify one or more locations wherein the defects are proximate to the identified overlay sites, and generating a metrology sampling plan based on the identified locations.
    • 检查引导覆盖度量可以包括执行图案搜索以便识别半导体晶片上的预定图案,为半导体晶片上的预定图案的所有实例生成护理区域,通过执行检查扫描来检查所产生的护理区域内的缺陷 每个生成的护理区域,其中检查扫描包括低阈值或高灵敏度检查扫描,识别具有大于使用缺陷检查技术的所选覆盖规格的测量覆盖误差的半导体晶片的预定图案的覆盖位置 将生成的护理区域的所识别的缺陷的位置数据与生成的护理区域内的所识别的覆盖位置的位置数据进行比较,以便识别其中缺陷接近所识别的覆盖位置的一个或多个位置,以及生成计量取样 基于确定的位置进行计划。
    • 9. 发明申请
    • DESIGN BASED DEVICE RISK ASSESSMENT
    • 基于设计的设备风险评估
    • WO2012115912A3
    • 2012-11-22
    • PCT/US2012025827
    • 2012-02-20
    • KLA TENCOR CORPPARK ALLENJIN YOUSEUNGCHO SUNGCHANSAVILLE BARRY
    • PARK ALLENJIN YOUSEUNGCHO SUNGCHANSAVILLE BARRY
    • H01L21/00H01L21/66
    • H01L22/12G01N21/95607G01N2021/8883G05B19/41875G05B2219/32182H01L22/20H01L2924/0002Y02P90/22Y02P90/265H01L2924/00
    • The present invention includes defining a multiple patterns of interest utilizing design data of the device; generating a design based classification database, the DBC database including design data associated with each of the POIs; receiving one or more inspection results; comparing the inspection results to each of the plurality of POIs in order to identify an occurrence of at least one of the POIs in the inspection results; determining yield impact of each POI utilizing process yield data; monitoring a frequency of occurrence of each of the POIs and the criticality of the POIs in order to identify process excursions of the device; and determining a device risk level by calculating a normalized polygon frequency for the device utilizing a frequency of occurrence for each of the critical polygons and a criticality for each of the critical polygons, the critical polygons defined utilizing design data of the device.
    • 本发明包括利用设备的设计数据来定义多个感兴趣的图案; 生成基于设计的分类数据库,所述DBC数据库包括与每个所述POI相关联的设计数据; 接收一个或多个检查结果; 将检查结果与多个POI中的每一个进行比较以便识别检查结果中的POI中的至少一个的发生; 利用过程产量数据确定每个POI的产量影响; 监测每个POI的出现频率和POI的临界程度,以便识别设备的过程偏移; 以及通过利用每个关键多边形的出现频率和每个关键多边形的关键性来计算该装置的归一化多边形频率来确定装置风险等级,该关键多边形利用该装置的设计数据来定义。