Lateral shift measurement using an optical technique
    11.
    发明申请
    Lateral shift measurement using an optical technique 有权
    使用光学技术的侧向位移测量

    公开(公告)号:US20070034816A1

    公开(公告)日:2007-02-15

    申请号:US11580997

    申请日:2006-10-16

    Abstract: Alignment of layers during manufacture of a multi-layer sample is controlled by applying optical measurements to a measurement site in the sample. The measurement site includes two diffractive structures located one above the other in two different layers, respectively. The optical measurements comprise at least two measurements with different polarization states of incident light, each measurement including illuminating eh measurement site so as to illuminate one of the diffractive structures through the other. The diffraction properties of the measurement site are indicative of a lateral shift between eth diffractive structures. The diffraction properties detected are analyzed for the different polarization states of the incident light to determine an existing lateral shift between the layers.

    Abstract translation: 通过对样品中的测量部位进行光学测量来控制多层样品的制造期间层的对准。 测量部位包括两个分别位于两个不同层之间的衍射结构。 光学测量包括具有入射光的不同偏振态的至少两个测量,每个测量包括照射eh测量位置,以便通过另一个照射衍射结构之一。 测量位置的衍射特性表示了eth衍射结构之间的横向偏移。 对入射光的不同极化状态分析检测的衍射特性,以确定层之间现有的横向偏移。

    Method and system for thickness measurements of thin conductive layers
    12.
    发明授权
    Method and system for thickness measurements of thin conductive layers 有权
    薄导电层厚度测量方法和系统

    公开(公告)号:US06815947B2

    公开(公告)日:2004-11-09

    申请号:US10459711

    申请日:2003-06-12

    CPC classification number: G01B7/105

    Abstract: A method and system are presented for measuring in an electrically conductive film of a specific sample including data indicative of a free space response of an RF sensing coil unit to AC voltage applied to the RF sensing coil. The sensing coil is located proximate to the sample at a distance h substantially not exceeding 0.2 r wherein r is the coil radius; an AC voltage in a range from 100 MHz to a few GHz is applied to the sensing coil to cause generation of an eddy current passage through the conductive film; a response of the sensing coil to an effect of the electric current through the conductive film onto a magnetic field of the coil is detected and the measured data indicative of the response is generated. The thickness of the film is determined by utilizing the data indicative of the free space measurements to analyze the measured date. The method thus provides for measuring in conductive films with a sheet resistance Rs in a range from about 0.009 to about 2 Ohm/m2.

    Abstract translation: 提供了一种用于在特定样品的导电膜中测量的方法和系统,包括指示RF感测线圈单元的自由空间响应与施加到RF感测线圈的AC电压的数据。 感测线圈以基本上不超过0.2r的距离h定位在样本附近,其中r是线圈半径; 在感测线圈上施加从100MHz到几GHz范围内的AC电压,以产生通过导电膜的涡流通路; 检测到感测线圈对通过导电膜的电流对线圈的磁场的影响的响应,并且生成表示响应的测量数据。 通过利用表示自由空间测量的数据来分析测量日期来确定膜的厚度。 因此,该方法提供了在约0.009至约2Ohm / m 2的范围内的薄层电阻Rs的导电膜中的测量。

    Method and apparatus for measurements of patterned structures
    13.
    发明授权
    Method and apparatus for measurements of patterned structures 有权
    用于测量图案结构的方法和装置

    公开(公告)号:US6100985A

    公开(公告)日:2000-08-08

    申请号:US267989

    申请日:1999-03-12

    CPC classification number: G01B11/0625 G01B11/02 G01J3/42 H01L22/12

    Abstract: A method for measuring at least one desired parameter of a patterned structure having a plurality of features defined by a certain process of its manufacturing. The structure represents a grid having at least one cycle formed of at least two locally adjacent elements having different optical properties in respect of an incident radiation. An optical model, based on at least some of the features of the structure is provided. The model is capable of determining theoretical data representative of photometric intensities of light components of different wavelengths specularly reflected from the structure and of calculating said at least one desired parameter of the structure. A measurement area, which is substantially larger than a surface area of the structure defined by the grid cycle, is illuminated by an incident radiation of a preset substantially wide wavelength range. Light component substantially specularly reflected from the measurement area is detected and measured data representative of photometric intensities of each wavelength within the wavelength range is obtained. The measured and theoretical data are analyzed and the optical model is optimized until the theoretical data satisfies a predetermined condition. Upon detecting that the predetermined condition is satisfied, said at least one parameter of the structure is calculated.

    Abstract translation: 一种用于测量具有由其制造的特定过程限定的多个特征的图案化结构的至少一个期望参数的方法。 该结构表示具有至少一个周期的网格,该至少一个周期由相对于入射辐射具有不同光学特性的至少两个局部相邻元件形成。 提供了基于结构的至少一些特征的光学模型。 该模型能够确定表示从结构镜面反射的不同波长的光分量的光度强度并且计算所述结构的至少一个期望参数的理论数据。 基本上大于由栅格周期限定的结构的表面积的测量区域被预设的基本上宽的波长范围的入射辐射照射。 检测从测量区域基本上镜面反射的光分量,并且获得表示波长范围内的每个波长的光度强度的测量数据。 分析测量和理论数据,并优化光学模型,直到理论数据满足预定条件。 在检测到满足预定条件时,计算结构的所述至少一个参数。

    METHOD AND APPARATUS FOR THIN FILM QUALITY CONTROL
    14.
    发明申请
    METHOD AND APPARATUS FOR THIN FILM QUALITY CONTROL 审中-公开
    薄膜质量控制的方法和装置

    公开(公告)号:US20110089348A1

    公开(公告)日:2011-04-21

    申请号:US12966595

    申请日:2010-12-13

    Abstract: Photovoltaic thin film quality control is obtained where the thin film is supported by a support and a section of the film is illuminated by a polychromatic or monochromatic illumination source. The illumination is positioned in certain locations including locations where the layer stack includes a reduced number of thin film layers. Such locations may be discrete sampled points located within scribe lines, contact frames or dedicated measurement targets. The light collected from such discrete sampled points is transferred to a photo-sensitive sensor through an optical switch. The spectral signal of the light reflected, transmitted or scattered by the sampled points is collected by the sensor and processed by a controller in such a way that parameters of simplified stacks are used for accurate determination of desired parameters of the full cell stack. In this way the photovoltaic thin film parameters applicable to the quality control are derived e.g. thin film thickness, index of refraction, extinction coefficient, absorption coefficient, energy gap, conductivity, crystallinity, surface roughness, crystal phase, material composition and photoluminescence spectrum and intensity. Manufacturing equipment parameters influencing the material properties may be changed to provide a uniform thin film layer with pre-defined properties.

    Abstract translation: 获得光电薄膜质量控制,其中薄膜由支撑体支撑并且膜的一部分被多色或单色照明源照射。 照明被定位在某些位置,包括层堆叠减少数量的薄膜层的位置。 这些位置可以是位于划线,接触框架或专用测量目标内的离散采样点。 从这些离散采样点收集的光通过光学开关传送到光敏传感器。 由采样点反射,传播或散射的光的光谱信号由传感器收集并由控制器进行处理,使得简化堆栈的参数用于精确确定全单元堆栈的期望参数。 以这种方式,可以使用适用于质量控制的光伏薄膜参数。 薄膜厚度,折射率,消光系数,吸收系数,能隙,导电率,结晶度,表面粗糙度,结晶相,材料组成和光致发光光谱和强度。 可以改变影响材料性能的制造设备参数,以提供具有预定特性的均匀薄膜层。

    REFLECTIVE OPTICAL SYSTEM
    15.
    发明申请
    REFLECTIVE OPTICAL SYSTEM 审中-公开
    反射光学系统

    公开(公告)号:US20090213377A1

    公开(公告)日:2009-08-27

    申请号:US12463550

    申请日:2009-05-11

    Abstract: A lens arrangement is presented. The lens arrangement comprises a first element having a concave reflective surface and defining an optical axis of the lens arrangement, and a second substantially flat and at least partially reflective element spaced-apart from the first element along the optical axis. The second element is configured to allow light passage therethrough and is oriented with respect to the optical axis and the first element such that at a predetermined angle of incidence of an input light beam onto the second element, the input light beam is reflected onto the reflective surface of the first element and reflected therefrom to pass through the second element.

    Abstract translation: 呈现镜头布置。 透镜装置包括具有凹面反射表面并限定透镜装置的光轴的第一元件以及沿着光轴与第一元件间隔开的第二基本平坦且至少部分反射的元件。 第二元件被配置为允许光通过其并且相对于光轴和第一元件定向,使得在输入光束到第二元件的预定入射角度处,输入光束被反射到反射 第一元件的表面并从其反射以穿过第二元件。

    Method and apparatus for measurements of patterned structures
    16.
    发明授权
    Method and apparatus for measurements of patterned structures 有权
    用于测量图案结构的方法和装置

    公开(公告)号:US07187456B2

    公开(公告)日:2007-03-06

    申请号:US11053254

    申请日:2005-02-08

    CPC classification number: G01J3/42 G01B11/02 G01B11/0625 H01L22/12

    Abstract: A method for measuring at least one desired parameter of a patterned structure having a plurality of features defined by a certain process of its manufacturing. The structure represents a grid having at least one cycle formed of at least two metal-containing regions spaced by substantially transparent regions with respect to incident light defining a waveguide. An optical model is provided, which is based on at least some of the features of the structure defined by a certain process of its manufacturing, and on the relation between a range of the wavelengths of incident radiation to be used for measurements and a space size between the two metal-containing regions in the grid cycle, and a skin depth of said metal. The model is capable of determining theoretical data representative of photometric intensities of light components of different wavelengths specularly reflected from the structure and of calculating said at least one desired parameter of the structure. A measurement area is located and spectrophotometric measurements are applied to the measurement area, by illuminating it with incident light of a preset substantially wide wavelength range. A light component substantially specularly reflected from the measurement area is detected, and measured data representative of photometric intensities of each wavelength within the wavelength range is obtained. The measured and theoretical data are analyzed and the optical model is optimized until the theoretical data satisfies a predetermined condition. Upon detecting that the predetermined condition is satisfied, said at least one parameter of the structure is calculated.

    Abstract translation: 一种用于测量具有由其制造的特定过程限定的多个特征的图案化结构的至少一个期望参数的方法。 该结构表示具有由至少两个含金属区域形成的至少一个周期的格栅,该至少两个金属区域相对于限定波导的入射光被基本上透明的区域隔开。 提供了一种光学模型,其基于由其制造的特定过程定义的结构的至少一些特征以及用于测量的入射辐射的波长范围与空间大小之间的关系 在网格周期中的两个含金属区域之间,以及所述金属的趋肤深度。 该模型能够确定表示从结构镜面反射的不同波长的光分量的光度强度并且计算所述结构的至少一个期望参数的理论数据。 定位测量区域,并且通过用预设的基本上宽的波长范围的入射光照射分光光度测量值到测量区域。 检测从测量区域基本上镜面反射的光分量,并且获得表示波长范围内的每个波长的光度强度的测量数据。 分析测量和理论数据,并优化光学模型,直到理论数据满足预定条件。 在检测到满足预定条件时,计算结构的所述至少一个参数。

    Method and system for monitoring a process of material removal from the surface of a patterned structure
    17.
    发明授权
    Method and system for monitoring a process of material removal from the surface of a patterned structure 有权
    用于监测从图案化结构的表面去除材料的过程的方法和系统

    公开(公告)号:US06885446B2

    公开(公告)日:2005-04-26

    申请号:US10309348

    申请日:2002-12-04

    Abstract: A method and system are presented for use in controlling a process of material removal from the surface of a patterned structure, by measuring at least one of residue, erosion, dishing and corrosion effects in the structure induced by this process. The structure is imaged utilizing phase modulation of light reflected from the structure, and a phase map of the structure is thereby obtained. This phase map is analyzed and data indicative of light reflective properties of layer stacks of the structure is utilized to determine a phase difference between light reflected from a selected measured site and at least one reference site spaced-apart from the selected site. The phase difference is thus indicative of the measured effect.

    Abstract translation: 提供了一种方法和系统,用于通过测量由该方法诱导的结构中的残留物,侵蚀,凹陷和腐蚀效应中的至少一种来控制从图案化结构的表面去除材料的过程。 利用从结构反射的光的相位调制对该结构进行成像,从而获得该结构的相位图。 分析该相位图,并且利用表示该结构的层叠层的光反射特性的数据来​​确定从所选择的测量部位反射的光与至少一个与选定部位间隔开的参考部位的相位差。 因此,相位差表示测量的效果。

    Method and apparatus for monitoring a chemical mechanical planarization process applied to metal-based patterned objects
    18.
    发明授权
    Method and apparatus for monitoring a chemical mechanical planarization process applied to metal-based patterned objects 有权
    用于监测应用于基于金属的图案化物体的化学机械平面化处理的方法和装置

    公开(公告)号:US06801326B2

    公开(公告)日:2004-10-05

    申请号:US09942849

    申请日:2001-08-31

    Abstract: A method is presented for optical control of the quality of a process of chemical mechanical planarization (CMP) performed by a polishing tool applied to an article having a patterned area. The article contains a plurality of stacks each formed by a plurality of different layers, thereby defining a pattern in the form of spaced-apart metal regions. The method is capable of locating at least one of residues, erosion and dishing conditions on the article. At least one predetermined site on the article is selected for control. This at least one predetermined site is illuminated, and spectral characteristics of light components reflected from this location are detected. Data representative of the detected light components is analyzed for determining at least one parameter of the article within the at least one illuminated site.

    Abstract translation: 提出了一种用于光学控制由应用于具有图案化区域的制品的抛光工具执行的化学机械平面化(CMP)工艺的质量的方法。 该物品包含多个由多个不同层形成的堆叠,从而限定了间隔金属区域形式的图案。 该方法能够定位物品上的残留物,侵蚀和凹陷条件中的至少一种。 选择物品上至少一个预定的位置进行控制。 该至少一个预定位置被照亮,并且检测从该位置反射的光分量的光谱特性。 分析表示检测到的光成分的数据,以确定至少一个照明部位内的物品的至少一个参数。

    Optical measurements of patterned structures
    19.
    发明授权
    Optical measurements of patterned structures 有权
    图案结构的光学测量

    公开(公告)号:US06556947B1

    公开(公告)日:2003-04-29

    申请号:US09695838

    申请日:2000-10-26

    CPC classification number: G01B11/30 G01B11/0616 H01L22/12

    Abstract: A method for measuring at least one desired characteristic of a patterned article is presented. The article is of a kind containing a plurality of different pattern elements located at different sites, each including a stack of layers. An optical model is provided, which is based on a set of parameters corresponding to predetermined characteristics of the article, and is capable of generating theoretical data indicative of spectral response of the article. The set of parameters includes parameters corresponding to geometrical characteristics of the pattern elements. Reference data is prepared containing a plurality of sets of parameters for at least some of the different pattern elements. A spectral measurement of light response is carried out at a selected site of the patterned article and measured data is generated. By varying said parameters' sets, the optical model is optimized, and then the theoretical spectral responses obtained through the optimized optical model and from the measured data is analyzed to determine therefrom the at least one desired characteristic.

    Abstract translation: 提出了一种用于测量图案制品的至少一个期望特性的方法。 该物品是一种包含位于不同位置的多个不同图案元件的物品,每个都包括一叠层。 提供了一种光学模型,其基于对应于物品的预定特征的一组参数,并且能够产生指示物品的光谱响应的理论数据。 该组参数包括对应于图案元素的几何特征的参数。 准备包含用于至少一些不同图案元素的多组参数的参考数据。 在图案化物品的选定位置进行光响应的光谱测量,并产生测量数据。 通过改变所述参数集合,优化光学模型,然后分析通过优化的光学模型和测量数据获得的理论光谱响应,从而确定至少一个期望的特性。

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