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    • 12. 发明授权
    • Apparatus for detecting positional deviation of diffraction gratings on
a substrate by utilizing optical heterodyne interference of light beams
incident on the gratings from first and second light emitters
    • 用于通过利用入射在来自第一和第二发光体的光栅的光束的光学外差干涉来检测基板上的衍射光栅的位置偏差的装置
    • US5682239A
    • 1997-10-28
    • US528817
    • 1995-09-15
    • Takahiro MatsumotoKenji SaitohKoichi Sentoku
    • Takahiro MatsumotoKenji SaitohKoichi Sentoku
    • G01B9/02G01B11/00G03F7/20G03F9/00
    • G03F7/70633G03F9/70
    • Apparatus for detecting a positional deviation of two diffraction gratings of each of first and second pairs of diffraction gratings formed on a substrate, by utilizing an optical heterodyne interference method. The apparatus includes a first light emitter for emitting a pair of coherent light beams having different frequencies close to a first frequency, a second light emitter for emitting a pair of coherent light beams having different frequencies close to a second frequency, different from the first frequency, a four-way radiating unit radiating the two pairs of light beams in four directions and for causing a selected pair of the light beams to be incident on a corresponding one of the first and second pairs of the diffraction gratings such that corresponding beam spots overlap with each other, a splitter for splitting diffracted light beams from the diffraction gratings according to frequencies of the diffracted light beams, to separate a first diffracted light beam, which is diffracted from the first pair of diffraction gratings in a diffraction direction, and a second diffracted light beam, which is diffracted from the second pair of diffraction gratings in the same diffraction direction, a beat signal detector for detecting beat signals respectively corresponding to the split light beams, and a deviation detecting unit for receiving the detected beat signals and for detecting a positional deviation in a predetermined direction of two diffraction gratings of each of the first and second pairs, from the beat signals respectively corresponding to the two diffraction gratings of a corresponding one of the first and second pairs.
    • 用于通过利用光学外差干扰法检测形成在基板上的第一和第二对衍射光栅中的每一个的两个衍射光栅的位置偏差的装置。 该装置包括用于发射具有接近于第一频率的不同频率的一对相干光束的第一光发射器,用于发射具有接近第二频率的不同频率的一对相干光束的第二光发射器,其不同于第一频率 ,四路辐射单元,其在四个方向上辐射两对光束,并且使所选择的一对光束入射在第一和第二对衍射光栅中的相应一个上,使得相应的光束点重叠 彼此分离,用于根据衍射光束的频率从衍射光栅分离衍射光束,以在衍射方向上分离从第一对衍射光栅衍射的第一衍射光束,以及第二衍射光束 衍射光束在相同的衍射光谱中衍射自第二对衍射光栅 n是用于检测分别对应于分割光束的拍频信号的拍频信号检测器,以及用于接收所检测到的拍频信号并检测第一和第二声道中的每一个的两个衍射光栅的预定方向的位置偏差的偏差检测单元 从分别对应于第一和第二对应的一个的两个衍射光栅的拍子信号对。
    • 14. 发明授权
    • Positional deviation detecting method
    • 位置偏差检测方法
    • US5481363A
    • 1996-01-02
    • US242066
    • 1994-05-13
    • Masakazu MatsuguKenji SaitohJun HattoriSakae Houryu
    • Masakazu MatsuguKenji SaitohJun HattoriSakae Houryu
    • G03F9/00G01B11/00
    • G03F9/7076
    • A method of detecting a relative positional deviation of a first object having a first grating mark with an optical power and a second object having a second grating mark with an optical power, is disclosed, wherein a projected radiation beam is diffracted by the first and second grating marks in sequence and, on the basis of a position of convergence on a light receiving surface of plural diffraction beams produced by the diffraction through the first and second grating marks and including a signal beam having been diffracted at a predetermined order by each of the first and second grating marks, the relative positional deviation is determined, a detection zone is defined on the light receiving surface, the signal beam is converged upon the detection zone, and a predetermined diffraction beam of the plural diffraction beams which, for a relative positional deviation of the first and second objects, shows displacement different from that of the signal beam is substantially prevented from being converged upon the detection zone.
    • 公开了一种检测具有光功率的第一光栅标记的第一物体和具有光功率的第二光栅标记的第二物体的相对位置偏差的方法,其中投射的辐射束被第一和第二衍射 基于通过第一和第二光栅标记的衍射产生的多个衍射光束的光接收表面上的会聚位置,并且包括以预定顺序衍射的信号光束 第一和第二光栅标记,确定相对位置偏差,在光接收表面上限定检测区域,信号光束会聚在检测区域上,并且将多个衍射光束的预定衍射光束相对于相对位置 显示第一和第二物体的偏差显示出与信号光束不同的位移 om会聚在检测区域。
    • 20. 发明授权
    • Exposure method and device manufacturing method using the same
    • 曝光方法及使用其的装置制造方法
    • US06828085B2
    • 2004-12-07
    • US09391633
    • 1999-09-07
    • Tetsunobu KochiKenji Saitoh
    • Tetsunobu KochiKenji Saitoh
    • G03F700
    • G03F7/2022G03F7/70466
    • A method of producing a semiconductor chip includes (1) a first exposure step for exposing a device range inside a chip on a substrate, to a repetition pattern including a line and a space, wherein an exposure region of the repetition pattern has a size greater than the device range inside the chip, and (2) a second exposure step for exposing the device range inside the chip on the substrate, to a pattern which includes (i) a first line being parallel to the line of the repetition pattern and having substantially the same linewidth as that of the line or a first space being parallel to the space of the repetition pattern and having substantially the same width, and (ii) a second line of a width larger than the line of the repetition pattern or a second space of a width larger than the space of the repetition pattern. The first line overlaps with a portion of lines of the repetition pattern, or the first space overlaps with a portion of spaces of the repetition pattern. Also, the first and second exposure steps are carried out without a developing step interposed therebetween.
    • 一种制造半导体芯片的方法包括:(1)第一曝光步骤,用于将衬底上的芯片内的器件范围曝光到包括线和空间的重复图案,其中重复图案的曝光区域具有更大的尺寸 (2)第二曝光步骤,用于将衬底内的芯片内部的器件范围曝光到包括(i)第一线平行于重复图案的线并且具有 基本上与线的线宽相同或第一空间平行于重复图案的空间并且具有基本上相同的宽度,以及(ii)宽度大于重复图案的线的第二线或第二线 宽度大于重复图案的空间的空间。 第一行与重复图案的一部分线重叠,或者第一空间与重复图案的空间的一部分重叠。 此外,第一曝光步骤和第二曝光步骤不间断地进行显影步骤。