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    • 26. 发明申请
    • Method and apparatus for reviewing defects
    • 检查缺陷的方法和装置
    • US20050122508A1
    • 2005-06-09
    • US10975450
    • 2004-10-29
    • Sachio UtoYoshimasa OhshimaMinori NoguchiToshiei Kurosaki
    • Sachio UtoYoshimasa OhshimaMinori NoguchiToshiei Kurosaki
    • G01N21/956G01N23/225G01N21/88
    • H01J37/226G01N21/956G01N23/2251H01J2237/2482
    • The present invention provides an apparatus capable of, and a method for, inspecting at high speed and with high accuracy the super minute foreign particles and pattern defects occurring during device-manufacturing processes in which circuit patterns are to be formed on a sample such as a substrate of semiconductor devices and other elements: in the invention, the sample is illuminated in a dark field from multiple directions each of a different incident angle, the light scattered from the sample during the dark-field illumination is detected in each of the multiple directions, and the signals obtained by detecting the scattered light in each direction; thus, defects present on the surface of an optically transparent film of the sample, and defects present in or under the transparent film are discriminated from each other and both types of defects are discriminatively reviewed using a scanning electron microscope.
    • 本发明提供了一种能够以高精度,高精度地检查在器件制造过程中发生的超微小异物和图案缺陷的装置,其中电路图形将被形成在诸如 半导体器件的衬底和其他元件:在本发明中,样品在来自不同入射角的多个方向的暗场中照射,在暗场照明期间从样品散射的光在多个方向中的每一个中被检测 以及通过检测各方向的散射光而获得的信号; 因此,存在于样品的光学透明膜的表面上的缺陷以及存在于透明膜中或其下的缺陷彼此区分,并且使用扫描电子显微镜来区分地区分两种类型的缺陷。
    • 28. 发明授权
    • Method and its apparatus for inspecting a specimen
    • 检测样本的方法及其装置
    • US06553323B1
    • 2003-04-22
    • US09661182
    • 2000-09-13
    • Kenji ObaraYuji TakagiToshifumi HondaRyo NakagakiToshiei KurosakiYasuhiko Ozawa
    • Kenji ObaraYuji TakagiToshifumi HondaRyo NakagakiToshiei KurosakiYasuhiko Ozawa
    • G01B528
    • H01L22/20G01N21/88G01N2021/8861
    • The present invention improves inspection efficiency in detailed inspections of defects performed based on inspection information from a defect inspection. Particles and defects are detected by a defect inspection device 1. If the cause of the particles and defects are to be determined by performing a detailed inspection with a details inspection device 3 using an SEM or the like, attributes are determined on the particles and defects detected by the defects inspection device 1 before the detailed inspection is performed. The attributes are determined with an attribute inspection device using an optical microscope or the like. Based on these attributes, the defects and particles are separated into those that require detailed inspection and those that do not require detailed inspection or that cannot be inspected in detail. A details inspection device 3 is used to inspect the particles and defects requiring detailed inspection.
    • 本发明基于来自缺陷检查的检查信息进行的缺陷的详细检查,提高了检查效率。 通过缺陷检查装置1检测颗粒和缺陷。如果通过使用SEM等的细节检查装置3进行详细检查来确定颗粒和缺陷的原因,则根据颗粒和缺陷确定属性 在执行详细检查之前由缺陷检查装置1检测到。 属性由使用光学显微镜等的属性检查装置确定。 基于这些属性,缺陷和颗粒被分成需要详细检查的那些和不需要详细检查或者不能被详细检查的那些。 细节检查装置3用于检查需要详细检查的颗粒和缺陷。
    • 29. 发明授权
    • Method of detecting inclination of a specimen and a projection exposure
device as well as method of detecting period of periodically varying
signal
    • 检测试样和投影曝光装置的倾斜度的方法以及检测周期性变化信号周期的方法
    • US5392115A
    • 1995-02-21
    • US936661
    • 1992-08-28
    • Yoshitada OshidaTaku NinomiyaToshiei Kurosaki
    • Yoshitada OshidaTaku NinomiyaToshiei Kurosaki
    • G03F9/00G01B9/02
    • G03F9/7026G03F9/7049
    • A method for detecting a period of a periodically varying signal and/or an inclination of a specimen utilizing an exposure apparatus wherein a coherent light is divided into first and second lights and the first light is irradiated onto the specimen at a predetermined angle, and a reflected light thereof and a reference light as the second light interfere with each other so as to form interference fringes, the interference fringes are detected, and the inclination of the specimen is detected from a pitch representing a period of the interference fringes. The method includes detecting a spectrum of a signal intensity obtained from the detected interference fringes or the periodically varying signal, subjecting the detected spectrum data to a fast complex Fourier transformation, calculating a true spectrum peak position j.sub.R in accordance with a relationship j.sub.R =j.sub.0 +.DELTA., where j.sub.0 is a detected spectrum peak position and .DELTA. is a correcting value estimated from the Fourier transformed spectrum data adjacent to j.sub.0, and calculating the pitch P of the period of the signal intensity information in accordance with a relationship P=N/j.sub.R, where N is the number of sample data points for the complex Fourier transformation. Further, the method includes calculating the inclination of the specimen from the pitch P.
    • 一种用于检测周期性变化信号的周期和/或利用曝光装置的样本的倾斜的方法,其中相干光被分成第一和第二光,并且第一光以预定角度照射到样本上,并且 其反射光和作为第二光的参考光彼此干涉以形成干涉条纹,则检测干涉条纹,并且从表示干涉条纹周期的间距检测样本的倾斜度。 该方法包括检测从检测到的干涉条纹或周期性变化信号获得的信号强度的频谱,对所检测的频谱数据进行快速复数傅立叶变换,根据关系jR = j0 + DELTA计算真正的频谱峰值位置jR ,其中j0是检测到的频谱峰值位置,并且DELTA是从与j0相邻的傅立叶变换频谱数据估计的校正值,并且根据关系P = N / jR计算信号强度信息的周期的间距P, 其中N是复数傅里叶变换的采样数据点的数量。 此外,该方法包括从间距P计算样本的倾斜度。
    • 30. 发明授权
    • Projection type exposure method and apparatus
    • 投影式曝光方法及装置
    • US5247329A
    • 1993-09-21
    • US813002
    • 1991-12-24
    • Yoshitada OshidaToshiei KurosakiAkira InagakiYoshihiko Aiba
    • Yoshitada OshidaToshiei KurosakiAkira InagakiYoshihiko Aiba
    • G03F1/44G03F7/20G03F7/207G03F9/00H01L21/027H01L21/30
    • G03F9/7023G03F7/70241
    • A projection type exposure apparatus and method comprising an exposure illumination light source, an exposure illumination system, a mask or reticle on which an original pattern to be projected on the exposed matter is drawn, an optical projection system, a stage for retaining the exposed matter and a mechanism for finely moving the stage along the exposure optical axis. The apparatus is provided with an exposure detection pattern area on the mask, detection illumination means for projecting on the exposure detection pattern area a light ray which is the same or almost the same in wavelength as exposure light having a desired directivity, exposure detection means for detecting the transmitted or reflected light diffracted by 1 degree after the light carrying the image formed on the exposed matter by the light passed through the above-noted optical projection system after projection by the detection illumination means onto the exposure pattern and then diffracted goes in reverse through the above-noted optical projection system and forms an image again on the exposure pattern on the above-noted mask and a control circuit for driving and controlling the above-noted fine movement mechanism by using the signal obtained by the exposure detection means.
    • 一种投影式曝光装置和方法,包括曝光照明光源,曝光照明系统,掩模或掩模版,其上将要投射在暴露物体上的原始图案被拉出,光学投影系统,用于保持暴露物质的台 以及用于沿着曝光光轴精细地移动台的机构。 该设备在掩模上设置曝光检测图案区域,检测照明装置用于在曝光检测图案区域上投射与具有所需方向性的曝光光相同或几乎相同的波长的光线,曝光检测装置 在通过检测照明装置投影到曝光图案上之后,在通过上述光学投影系统的光在携带在曝光物体上形成的图像的光之后,将被发射或反射的光衍射1度,然后衍射反向 通过上述光学投影系统并在上述掩模上的曝光图案上再次形成图像,以及通过使用由曝光检测装置获得的信号来驱动和控制上述微动机构的控制电路。