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    • 1. 发明授权
    • Projection alignment method and apparatus
    • 投影对准方法及装置
    • US4708484A
    • 1987-11-24
    • US789778
    • 1985-10-21
    • Yoshihiro KomeyamaYukio KemboAsahiro KuniRyuuichi FunatsuAkira InagakiMinoru IkedaKeiichi Okamoto
    • Yoshihiro KomeyamaYukio KemboAsahiro KuniRyuuichi FunatsuAkira InagakiMinoru IkedaKeiichi Okamoto
    • G01R31/26G03F9/00H01L21/30G01B11/26
    • G03F9/7023G03F9/7049G03F9/7076
    • The present invention relates, in a projection aligner wherein a mask and a wafer are held proximate to one another and wherein a circuit pattern depicted on the mask is transferred onto the wafer, to a method of detecting the respective positions of the mask and the wafer for the relative positioning between the mask and the wafer. To the end of dispensing with the withdrawal of a microscope objective in such a way that the objective of a microscope for detecting the mask and the wafer and projection light, for example, an X-ray, are prevented from interfering, thereby to achieve the enhancement of throughput and to permit the detection of the positions of the mask and the wafer even during projection, the present invention consists in that the objective of the microscope is inclined with respect to a perpendicular to the plane of the mask or the plane of the wafer being a plane to-be-detected, so as not to interfere with the projection light, for example, the X-ray, whereby the circuit pattern can be transferred while the relative positions of the mask and the wafer are being detected.
    • 本发明涉及一种投影对准器,其中掩模和晶片彼此靠近地保持,并且其中将掩模上描绘的电路图案转印到晶片上,以检测掩模和晶片的相应位置的方法 用于掩模和晶片之间的相对定位。 以这样的方式分配显微镜物镜的取出的结束,使得防止用于检测掩模和晶片的显微镜和例如X射线的投射光的目的被干扰,从而实现 增加吞吐量并且即使在投影期间也能够检测掩模和晶片的位置,本发明的目的在于,显微镜的目的是相对于掩模的平面垂直于或平面的倾斜 晶片是要被检测的平面,以便不干涉诸如X射线的投影光,由此可以在检测掩模和晶片的相对位置的同时传输电路图案。
    • 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。
    • 5. 发明授权
    • X-ray exposure system
    • X射线曝光系统
    • US4803712A
    • 1989-02-07
    • US4880
    • 1987-01-20
    • Yukio KemboMinoru IkedaMotoya Taniguchi
    • Yukio KemboMinoru IkedaMotoya Taniguchi
    • G03F7/20G03F9/00
    • G03F7/70691G03F7/709
    • An X-ray exposure system includes a frame set on the floor; an X-ray source fixedly provided in the central portion of the upper part of the frame; a mask-wafer alignment means comprising a wafer at a fixed distance from a mask, an X-Y table mounted with the wafer holder, a mask holder for holding the mask, and an alignment detecting means for detecting the alignment of the alignment pattern of the mask and that of the wafer; vibration isolators for supporting the mask-wafer alignment means so that vibrations do not propagate to the mask-wafer alignment means; detecting means for detecting the position of the mask-wafer alignment means with respect to three-dimensional directions relative to the X-ray source; an arithmetic means for calculating an exposure error of a dislocation of a mask pattern exposure on the wafer, on the basis of position data obtained by the detecting means; and correcting means for correcting the exposure error calculated by the arithmetic means.
    • X射线曝光系统包括设置在地板上的框架; 固定地设置在所述框架的上部的中心部分的X射线源; 掩模晶片对准装置,其包括距离掩模固定距离的晶片,安装有晶片保持器的XY工作台,用于保持掩模的掩模支架,以及用于检测掩模的对准图案的对准的对准检测装置 和晶片的; 用于支撑掩模 - 晶片对准装置的振动隔离器,使得振动不传播到掩模 - 晶片对准装置; 检测装置,用于相对于X射线源相对于三维方向检测掩模晶片对准装置的位置; 用于根据由检测装置获得的位置数据计算晶片上的掩模图案曝光的位错的曝光误差的算术装置; 以及校正装置,用于校正由算术装置计算出的曝光误差。
    • 6. 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。