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    • 1. 发明授权
    • X-ray lithography apparatus
    • X射线光刻设备
    • US4852133A
    • 1989-07-25
    • US117499
    • 1987-11-06
    • Minoru IkedaRyuichi FunatsuYukio KemboMotoya Taniguchi
    • Minoru IkedaRyuichi FunatsuYukio KemboMotoya Taniguchi
    • H01L21/027G03F7/20H01L21/30
    • G03F7/70866G03F7/70875G03F7/70933
    • An X-ray lithography apparatus for transferring a pattern formed in a mask onto a wafer by using a soft X-ray. The apparatus comprises a soft X-ray generating unit, a gas chamber connected to an X-ray exit window of the soft X-ray generating unit and filled with a gaseous medium having a high transmittivity to the X-ray, the mask being mounted within the gas chamber, a stage for positioning the wafer in opposition to the mask with a small gap therebetween, detecting optics disposed within the gas chamber for optically picking up image of alignment patterns of the mask and wafer, an imager disposed within the gas chamber for converting the image of the alignment pattern picked up by the detecting optics into a video signal, a discharging port for withdrawing from the gas chamber the gaseous medium present in the vicinity of the imager, a combination of a blower and a heat exchanged for cooling and circulating the gaseous medium withdrawn through the gas discharging port, and a charging port for feeding back to the gas chamber the gaseous medium conditioned and circulated by the blower and the heat exchanger. The discharge port, blower and heat exchanger and the charging port cooperate to prevent the temperature of the gaseous medium within the gas chamber from being increased due to heat generated by the imager means to thereby suppress drift phenomenon in the detecting optics.
    • 一种X射线光刻设备,用于通过使用软X射线将形成在掩模中的图案转印到晶片上。 该装置包括软X射线产生单元,连接到软X射线产生单元的X射线出射窗的气室,并且填充有对X射线具有高透射率的气体介质,所述掩模被安装 在气室内设有用于将晶片定位成与掩模相对的掩模的台阶,其间检测设置在气室内的光学拾取掩模和晶片的对准图案的图像;设置在气室内的成像器 用于将由检测光学元件拾取的对准图案的图像转换为视频信号;排出口,用于从气室中取出存在于成像器附近的气态介质,鼓风机和换热器的组合 并且循环通过气体排出口排出的气体介质,以及用于将由鼓风机调节和循环的气体介质反馈给气室的充气口, 在交换器。 排气口,鼓风机和热交换器以及充气口配合,以防止气体室内气态介质的温度由于成像器装置产生的热量而增加,从而抑制检测光学元件中的漂移现象。
    • 3. 发明授权
    • Method and apparatus for alignment
    • 对准方法和装置
    • US4777641A
    • 1988-10-11
    • US918004
    • 1986-10-14
    • Akira InagakiYukio KemboRyuichi FunatsuAsahiro KuniKeiichi OkamotoYoshihiro Komeyama
    • Akira InagakiYukio KemboRyuichi FunatsuAsahiro KuniKeiichi OkamotoYoshihiro Komeyama
    • G02B7/00G03F9/00H01L21/027H01L21/30H01L21/67H01L21/68G21K5/00
    • G03F9/70
    • A method and apparatus for alignment for use in X-ray exposure or the like wherein a mask is provided having a formation of an alignment pattern made up of at least one linear segment formed in a peripheral section of the mask and a wafer is provided having a formation of an alignment pattern formed in a same direction as the alignment pattern of the mask and made up of linear segments. An illuminating arrangement illuminates a light to the mask alignment pattern along a direction inclined to the alignment direction and the mask alignment pattern and the wafer alignment pattern are imaged and transformed into a video signal. An A/D converts the video signal into a digital signal and stores the digital signal in a memory. The digital video signal is read out from the memory and averaged in a mask alignment pattern by removing a shadow portion caused by the mask alignment pattern and additionally averaged in a wafer alignment pattern area with an averaged wafer alignment pattern signal and an averaged wafer alignment pattern signal being provided. Relative displacement between the mask and the wafer is detected from the averaged mask alignment pattern signal and the averaged wafer alignment pattern signal and the mask and wafer are aligned by moving at least one of the mask and wafer so that displacement between the mask and the wafer does not exist.
    • 一种用于X射线曝光等的对准用的方法和装置,其中提供具有由形成在掩模的周边部分中的至少一个线性部分构成的取向图案的掩模和晶片,其具有: 形成与由掩模的对准图形相同的方向形成并由直线段构成的对准图案。 照明装置沿着对准方向倾斜的方向照射到掩模对准图案,并且将掩模对准图案和晶片对准图案成像并变换为视频信号。 A / D将视频信号转换为数字信号,并将数字信号存储在存储器中。 从存储器中读出数字视频信号,并通过去除由掩模对准图形引起的阴影部分并以平均的晶片对准图案信号和平均的晶片对准图案在晶片对准图案区域中平均化,以掩模对准图案平均化 提供信号。 从平均的掩模对准图案信号中检测掩模和晶片之间的相对位移,并且通过移动掩模和晶片中的至少一个来对准平均的晶片对准图案信号并且掩模和晶片,使得掩模和晶片之间的位移 不存在。
    • 6. 发明授权
    • Circuit pattern inspection method and its apparatus
    • 电路图形检测方法及其装置
    • US07071468B2
    • 2006-07-04
    • US10957748
    • 2004-10-05
    • Hiroshi MiyaiRyuichi FunatsuTaku NinomiyaYasuhiko Nara
    • Hiroshi MiyaiRyuichi FunatsuTaku NinomiyaYasuhiko Nara
    • G01N21/00
    • G01N23/2251G01N21/95607H01J2237/2817
    • A circuit pattern inspection method and apparatus capable of readily setting an optimum threshold value while it is confirmed that a defect detected when a defect is checked can be detected at what threshold value and capable of forming a recipe easily. A circuit pattern inspection of irradiating an electron beam to a specimen formed with a circuit pattern on a surface thereof, forming an inspection image and a reference image in accordance with a secondary electron of a reflected electron from the specimen, and acquiring an abnormal portion from a difference between the inspection image and the reference image, wherein a plurality of characteristic quantities of the abnormal portion are obtained from an image of the abnormal portion, and the abnormal portion is selectively displayed by changing an inspection threshold value virtually set for the characteristic quantities.
    • 可以在确认在检查缺陷时检测到的缺陷能够容易地设定最佳阈值的电路图案检查方法和装置,并且能够容易地形成配方。 将电子束照射到其表面上形成有电路图案的试样的电路图案检查,根据来自试样的反射电子的二次电子形成检查图像和参考图像,并从 检查图像与参考图像之间的差异,其中从异常部分的图像获得异常部分的多个特征量,并且通过改变为特征量虚拟设置的检查阈值来选择性地显示异常部分 。