公开(公告)号：US06191849B1

公开(公告)日：2001-02-20

申请号：US09219873

申请日：1998-12-24

Applicant: Muneo Maeshima ,  Kazuo Takeda ,  Shigeru Matsui

Inventor： Muneo Maeshima ,  Kazuo Takeda ,  Shigeru Matsui

IPC: G01N2147

CPC classification number: G01N21/9501 ,  G01N21/9505

Abstract: Disclosed is a wafer inspecting apparatus suitable to determine whether a scattering substance is a surface foreign matter or an internal defect even if the particle size of the scattering substance is smaller than the wavelength of irradiation rays used for inspection. The wafer is obliquely irradiated with irradiation rays at the Brewster angle, and scattered rays which are scattered from a scattering substance on or in the wafer are detected at and angle 0° and an angle of the Brewster angle or more by detectors. Then, it is determined whether the scattering substance is a surface foreign matter or an internal defect on the basis of a ratio between the intensities of the scattered rays detected by the detectors. The intensity of scattered rays which are scattered from a surface foreign matter and detected at an angle of the Brewster angle or more is larger than the intensity of scattered rays which are scattered from the foreign matter and detected at an angle 0°, and the intensity of scattered rays which are scattered from an internal defect and detected at an angle of the Brewster angle or more is smaller than the intensity of scattered rays which are scattered from the internal defect and detected at an angle 0°. This makes it possible to distinguish the surface foreign matter and the internal defect from each other.

Abstract translation: 公开了一种适用于确定散射物质是表面异物还是内部缺陷的晶片检查装置，即使散射物质的粒径小于用于检查的照射射线的波长。 以布鲁斯特角度的照射光线倾斜照射晶片，从晶片上或晶片上的散射物质散射的散射光线以0°的角度和布鲁斯特角度以上的角度检测。 然后，基于由检测器检测到的散射光线的强度之间的比例来确定散射物质是表面异物还是内部缺陷。 从表面异物散射并以布鲁斯特角度以上的角度检测的散射光的强度大于从异物散射并以0°的角度检测的散射光的强度，强度 从内部缺陷散射并以布鲁斯特角度以上的角度检测的散射光的散射光小于从内部缺陷散射并以0°的角度检测的散射光的强度。 这使得可以将表面异物和内部缺陷彼此区分开。

公开(公告)号：US6160615A

公开(公告)日：2000-12-12

申请号：US255766

申请日：1999-02-23

Applicant: Shigeru Matsui ,  Muneo Maeshima ,  Isao Nemoto

Inventor： Shigeru Matsui ,  Muneo Maeshima ,  Isao Nemoto

IPC: H01L21/66 ,  G01N21/94 ,  G01N21/95 ,  G01N21/956 ,  H01L21/00 ,  G01N21/00 ,  C23C16/00 ,  G01B11/06

CPC classification number: H01L21/67288 ,  G01N21/94 ,  G01N21/9501

Abstract: A sample is supported flat in high precision by a sample chuck, and is easily mounted and dismounted.A wafer lifting mechanism is arranged in a position separated from a rotating system of a rotatable wafer chuck, and a wafer is lifted from a supporting surface by moving the wafer lifting mechanism upward to let pins penetrate through through holes of the wafer chuck under a state that the wafer chuck is stopped at a sample mounting-and-dismounting position.

Abstract translation: 样品通过样品卡盘以高精度平坦地支撑，并且易于安装和拆卸。 将晶片升降机构设置在与旋转晶片卡盘的旋转系统分离的位置，通过向上移动晶片升降机构使晶片从支撑面抬起，以使引脚在状态下穿过晶片卡盘的通孔 晶片卡盘停在样品安装和拆卸位置。

公开(公告)号：US6157444A

公开(公告)日：2000-12-05

申请号：US198644

申请日：1998-11-24

Applicant: Koji Tomita ,  Muneo Maeshima ,  Shigeru Matsui ,  Hitoshi Komuro ,  Kazuo Takeda

Inventor： Koji Tomita ,  Muneo Maeshima ,  Shigeru Matsui ,  Hitoshi Komuro ,  Kazuo Takeda

IPC: G01N21/95 ,  G01N21/88

CPC classification number: G01N21/9505 ,  G01N21/9501

Abstract: In order to easily evaluate defects of the silicon wafer affecting the characteristic of a device, the present invention provides a defect inspection apparatus for detecting defects existing on a surface of a sample and/or inside the sample, which comprises a display apparatus for displaying a distribution of the defects on a graph having coordinate axes of distance from a central position of the sample and the depth where the defect exists based on the depth information and the positional information obtained by a detecting means.

Abstract translation: 为了容易地评估影响器件特性的硅晶片的缺陷，本发明提供了一种用于检测存在于样品表面和/或样品内部的缺陷的缺陷检查装置，其包括显示装置 基于由检测装置获得的深度信息和位置信息，在具有距离样本的中心位置的距离的坐标轴和存在缺陷的深度的图形上的缺陷的分布。

公开(公告)号：US4777443A

公开(公告)日：1988-10-11

申请号：US119489

申请日：1987-11-12

Applicant: Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

Inventor： Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

IPC: G01R33/035 ,  G01R33/36 ,  G01R33/20

CPC classification number: G01R33/326 ,  G01R33/0358

Abstract: Disclosed in a nuclear magnetic resonance (NMR) based inspection apparatus using an SQUID flux meter for detecting a small NMR signal, in which a receiving coil for receiving the NMR signal from an object is connected to a mixer, which mixes a reference high-frequency signal with the NMR signal so that the NMR signal is reduced to a low-frequency signal having a differential component of frequencies of both signals, and the low-frequency signal is applied to the input coil of the SQUID flux meter so that it is converted into a voltage signal. The mixer circuit includes Schottky diodes operative at a liquid helium temperature or Josephson junctions, and the portions of apparatus from the reception coil up to the SQUID flux meter are operated in a superconductive state at a liquid helium temperature.

Abstract translation: 在使用SQUID通量计检测小型NMR信号的基于核磁共振（NMR）的检查装置中公开了一种用于从物体接收NMR信号的接收线圈连接到混频器，该混频器将参考高频 用NMR信号进行信号，使得NMR信号被减少到具有两个信号的频率的差分分量的低频信号，并且低频信号被施加到SQUID通量计的输入线圈，使得其被转换 变成电压信号。 混频器电路包括以液氦温度或约瑟夫逊结操作的肖特基二极管，并且从接收线圈到SQUID通量计的装置部分在液氦温度下处于超导状态。

公开(公告)号：US4689568A

公开(公告)日：1987-08-25

申请号：US750475

申请日：1985-07-01

Applicant: Shigeru Matsui ,  Kensuke Sekihara ,  Hideki Kohno ,  Takashi Onodera ,  Hidemi Shiono

Inventor： Shigeru Matsui ,  Kensuke Sekihara ,  Hideki Kohno ,  Takashi Onodera ,  Hidemi Shiono

IPC: G01R33/44 ,  A61B5/055 ,  A61B10/00 ,  G01R33/48 ,  G01R33/485 ,  G01R33/561 ,  G01R33/20

CPC classification number: G01R33/485 ,  G01R33/5616

Abstract: An NMR imaging method which provides a three-dimensional image representative of the two-dimensional distribution of nuclear spin species resolved by chemical shift or the local spectra resolved by two-dimensional location. After the excitation of nuclear spins and the phase-encoding by application of a field gradient G.sub.y, a periodically inverting field gradient G.sub.x is generated to yield a continuous echo train. The echo train is sampled and separated into data of odd-numbered echoes and data of even-numbered echoes which data are in turn reconstructed into two-dimensional data arrays, respectively. The data thus reconstructed are three-dimensional Fourier-transformed.

Abstract translation: 提供表示通过化学位移分解的核自旋物质的二维分布的三维图像的NMR成像方法或通过二维位置解析的局部光谱。 在核自旋的激励和通过施加场梯度Gy的相位编码之后，产生周期性反转场梯度Gx以产生连续的回波串。 回波串被采样并分离成奇数回波的数据和偶数回波的数据，数据又分别被重建成二维数据阵列。 这样重建的数据是三维傅里叶变换的。

公开(公告)号：US4683433A

公开(公告)日：1987-07-28

申请号：US636995

申请日：1984-08-02

Applicant: Etsuji Yamamoto ,  Hideki Kohno ,  Masao Kuroda ,  Shigeru Matsui ,  Hidemi Shiono

Inventor： Etsuji Yamamoto ,  Hideki Kohno ,  Masao Kuroda ,  Shigeru Matsui ,  Hidemi Shiono

IPC: G01R33/20 ,  A61B5/055 ,  A61B10/00 ,  G01R33/48 ,  G01R33/54 ,  G01R33/56

CPC classification number: G01R33/482 ,  G01R33/56

Abstract: An NMR imaging apparatus and method for detecting a nuclear spin resonance signal from an object, which is placed in a magnetic field, to produce images of the object. At an instant when the spins come into phase after the signal detection by a first spin excitation, RF magnetic field pulses are applied for rotating the direction of the spin to that opposite to the initial state. After that, the spin excitation and the signal direction of second time are conducted to measure the data which are different in the effect of the relaxation time from the first measurements. By repeating these sequences, it is possible to produce a plurality of images such as an intensity image or a relaxation time enhanced image.

Abstract translation: 一种用于检测放置在磁场中的物体的核自旋共振信号的NMR成像设备和方法，以产生物体的图像。 在通过第一自旋激发在信号检测之后自旋进入相位的瞬间，施加RF磁场脉冲以将旋转方向旋转到与初始状态相反的方向。 之后，进行自旋激励和第二次的信号方向，以测量与第一次测量相比，松弛时间的影响不同的数据。 通过重复这些序列，可以产生多个图像，例如强度图像或弛豫时间增强图像。

公开(公告)号：US4625170A

公开(公告)日：1986-11-25

申请号：US635154

申请日：1984-07-27

Applicant: Etsuji Yamamoto ,  Shigeru Matsui ,  Masuo Kuroda ,  Hideki Kohno

Inventor： Etsuji Yamamoto ,  Shigeru Matsui ,  Masuo Kuroda ,  Hideki Kohno

IPC: G01R33/20 ,  A61B5/055 ,  A61B10/00 ,  G01R33/48 ,  G01R33/565

CPC classification number: G01R33/56518

Abstract: An NMR imaging method and apparatus of the type in which a 180-degree RF pulse is applied to generate a spin echo after the selective excitation of a spin by a 90-degree RF pulse. A dummy gradient field, which has the same direction and intensity as those of a gradient field to be applied when the spin echo is observed, is applied between said 90-degree RF pulse and said 180-degree RF pulse so that the instant of starting the application of the gradient field for signal observation is advanced to the extent corresponding to said dummy gradient field.

Abstract translation: 一种NMR成像方法和装置，其中施加180度RF脉冲以在旋转选择性激发90度RF脉冲之后产生自旋回波。 在所述90度RF脉冲和所述180度RF脉冲之间，施加与观察到自旋回波时要施加的梯度场相同的方向和强度的虚拟梯度场，使得起始时刻 将用于信号观察的梯度场的应用提前到对应于所述虚拟梯度场的程度。