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    • 62. 发明申请
    • INSPECTION APPARATUS AND INSPECTION SYSTEM
    • 检查装置和检查系统
    • US20130250297A1
    • 2013-09-26
    • US13990103
    • 2011-10-11
    • Masaaki ItoMinori Noguchi
    • Masaaki ItoMinori Noguchi
    • G01N21/95
    • G01N21/9501G01N21/95607
    • Disclosed here is a macro inspection apparatus for a sample such as a semiconductor wafer having a pattern formed thereon, the apparatus being capable of detecting abnormalities in dimension and size with high sensitivity.The inspection apparatus for a sample having pattern formed thereon includes: an illumination optical system which illuminates the sample having the pattern formed thereon; a detection optical system which receives scattered light from the pattern; an imaging device which is disposed over a pupil plane of the detection optical system, the imaging device acquiring Fourier images of the pattern; and a processing unit which compares the Fourier images with the Fourier image of the normal pattern to detect an irregularity of the pattern.
    • 这里公开了一种用于诸如其上形成有图案的半导体晶片的样品的宏观检查装置,该装置能够以高灵敏度检测尺寸和尺寸的异常。 用于其上形成有图案的样品的检查装置包括:照射具有形成在其上的图案的样品的照明光学系统; 检测光学系统,其接收来自图案的散射光; 成像装置,其设置在所述检测光学系统的光瞳平面上,所述成像装置获取所述图案的付里叶图像; 以及处理单元,其将傅立叶图像与正常图案的傅里叶图像进行比较,以检测图案的不规则性。
    • 69. 发明申请
    • DEFECT INSPECTION SYSTEM
    • 缺陷检查系统
    • US20100271473A1
    • 2010-10-28
    • US12770337
    • 2010-04-29
    • Kenji AIKOShuichi ChikamatsuMinori NoguchiHisafumi Iwata
    • Kenji AIKOShuichi ChikamatsuMinori NoguchiHisafumi Iwata
    • H04N7/18G01N21/88G02B3/02
    • H04N7/18G01N21/9501G01N21/956G01N2021/8822H01L22/12H01L2924/0002H01L2924/00
    • A defect inspection system can suppress an effect of light from a sample rough surface or a regular circuit pattern and increasing a gain of light from a defect such as a foreign material to detect the defect on the sample surface with high sensitivity. When a lens with a large NA value is used, the outer diameter of the lens is 10a, and an angle between the sample surface and a traveling direction of the light from a defect is α1. An oblique detection optics system receives the light from the defect at a reduced elevation angle α2 with respect to the sample surface to reduce light from the sample rough surface, an oxide film rough bottom surface, and a circuit pattern, and to increase the amount of the light from the defect and detected. The diameter 10a of a lens is smaller than the diameter 10b, resulting in a reduction in the ability to focus the scattered light. When a lens with an outer diameter 10c is used to improve the focus ability, the lens interferes with the sample. To avoid the interference, a portion of the lens interfering with the sample is removed. The lens has an aperture larger than the diameter 10b while the lens receives the light scattered at the elevation angle α2, making it possible to improve the ability to detect defects and lens performance simultaneously.
    • 缺陷检查系统可以抑制来自样品粗糙表面或常规电路图案的光的影响,并且增加来自诸如异物的缺陷的光的增益以高灵敏度检测样品表面上的缺陷。 当使用具有大NA值的透镜时,透镜的外径为10a,并且样品表面与来自缺陷的光的行进方向之间的角度为α1。 倾斜检测光学系统以相对于样品表面的降低的仰角α2接收来自缺陷的光,以减少来自样品粗糙表面,氧化膜粗糙底表面和电路图案的光,并且增加 来自缺陷的光并检测。 透镜的直径10a小于直径10b,导致散射光聚焦的能力降低。 当使用外径为10c的透镜来提高聚焦能力时,透镜会干扰样品。 为了避免干扰,去除了与样品干扰的一部分透镜。 透镜具有大于直径10b的孔径,而透镜接收以仰角α2散射的光,从而可以提高同时检测缺陷和透镜性能的能力。