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1. 发明申请

WO2004066028A2 METHOD FOR PROCESS OPTIMIZATION AND CONTROL BY COMPARISON BETWEEN 2 OR MORE MEASURED SCATTEROMETRY SIGNALS 审中-公开
标题翻译：通过两个或更多测量的分析信号之间的比较进行优化和控制的方法
公开(公告)号：WO2004066028A2
公开(公告)日：2004-08-05
申请号：PCT/US2004/001570
申请日：2004-01-20
申请人： KLA-TENCOR TECHNOLOGIES CORPORATION , MIEHER, Walter, D. , MACK, Chris , HANKINSON, Matt
发明人： MIEHER, Walter, D. , MACK, Chris , HANKINSON, Matt
IPC分类号： G03F
CPC分类号： G03F7/70558 , G01N21/211 , G01N21/47 , G01N21/956 , G01N21/95607 , G01N2021/8416 , G03F7/70483 , G03F7/70533 , G03F7/70625 , G03F7/70641 , H01L22/12 , H01L22/20 , H01L2924/0002 , H01L2924/00
摘要： A method for determining one or more process parameter settings of a photolithographic system is disclosed.
摘要翻译：公开了一种用于确定光刻系统的一个或多个工艺参数设置的方法。

2. 发明申请

WO2007126559A2 APPARATUS AND METHOD FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 审中-公开
标题翻译：用于使用散射检测来检测重叠错误的装置和方法
公开(公告)号：WO2007126559A2
公开(公告)日：2007-11-08
申请号：PCT/US2007/006031
申请日：2007-03-08
申请人： KLA-TENCOR TECHNOLOGIES CORPORATION , KANDEL, Daniel , MIEHER, Walter, D. , GOLOVANEVSKY, Boris
发明人： KANDEL, Daniel , MIEHER, Walter, D. , GOLOVANEVSKY, Boris
IPC分类号： G01B11/00
CPC分类号： G03F7/70633
摘要： Embodiments of the invention include a scatterometry target for use in determining the alignment between substrate layers. A target arrangement is formed on a substrate and comprises a plurality of target cells. Each cell has two layers of periodic features constructed such that an upper layer is arranged above a lower layer and configured so that the periodic features of the upper layer have an offset and/or different pitch than periodic features of the lower layer. The pitches are arranged to generate a periodic signal when the target is exposed to an illumination source. The target also includes disambiguation features arranged between the cells and configured to resolve ambiguities caused by the periodic signals generated by the cells when exposed to the illumination source.
摘要翻译：本发明的实施例包括用于确定衬底层之间的对准的散射仪。目标装置形成在基板上并且包括多个目标单元。每个单元具有两层周期性特征，其被构造为使得上层布置在下层上方并且被配置为使得上层的周期特征具有与下层的周期特征相比偏移和/或不同的间距。当目标暴露于照明源时，间距被布置成产生周期性信号。目标还包括布置在单元之间的消歧特征，并被配置为解决由暴露于照明源时由单元产生的周期性信号引起的模糊。

3. 发明申请

WO2004076963A2 APPARATUS AND METHOD FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 审中-公开
标题翻译：用于使用散射检测来检测重叠错误的装置和方法
公开(公告)号：WO2004076963A2
公开(公告)日：2004-09-10
申请号：PCT/US2004/005419
申请日：2004-02-23
申请人： KLA-TENCOR TECHNOLOGIES CORPORATION , MIEHER, Walter, D. , LEVY, Ady , GOLOVANEVSKY, Boris , FRIEDMANN, Michael , SMITH, Ian , ADEL, Michael , FABRIKANT, Anatoly , BEVIS, Christopher, F. , FIELDEN, John , BAREKET, Noah , GROSS, Ken , ZALICKI, Piotr , WACK, Dan , DECECCO, Paola , DZIURA, Thaddeus, G. , GHINOVKER, Mark
发明人： MIEHER, Walter, D. , LEVY, Ady , GOLOVANEVSKY, Boris , FRIEDMANN, Michael , SMITH, Ian , ADEL, Michael , FABRIKANT, Anatoly , BEVIS, Christopher, F. , FIELDEN, John , BAREKET, Noah , GROSS, Ken , ZALICKI, Piotr , WACK, Dan , DECECCO, Paola , DZIURA, Thaddeus, G. , GHINOVKER, Mark
IPC分类号： G01B
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , G03F9/7049 , G03F9/7084
摘要： Disclosed is a method of determining an overlay error between two layers of a multiple layer sample. For a plurality of periodic targets that each have a first structure formed from a first layer and a second structure formed from a second layer of the sample, an optical system is employed to thereby measure an optical signal from each of the periodic targets. There are predefined offsets between the first and second structures. An overlay error is determined between the first and second structures by analyzing the measured optical signals from the periodic targets using a scatterometry overlay technique based on the predefined offsets. The optical system comprises any one or more of the following apparatus: an imaging reflectometer, an imaging spectroscopic reflectometer, a polarized spectroscopic imaging reflectometer, a scanning reflectometer system, a system with two or more reflectometers capable of parallel data acquisition, a system with two or more spectroscopic reflectometers capable of parallel data acquisition, a system with two or more polarized spectroscopic reflectometers capable of parallel data acquisition, a system with two or more polarized spectroscopic reflectometers capable of serial data acquisition without moving the wafer stage or moving any optical elements or the reflectometer stage, imaging spectrometers, imaging system with wavelength filter, imaging system with long-pass wavelength filter, imaging system with short-pass wavelength filter, imaging system without wavelength filter, interferometric imaging system, imaging ellipsometer, a spectroscopic ellipsometer, a laser ellipsometer having a photoelastic modulator, an imaging spectroscopic ellipsometer, a scanning ellipsometer system, a system with two or more ellipsometers capable of parallel data acquisition, a system with two or more ellipsometers capable of serial data acquisition without moving the wafer stage or moving any optical elements or the ellipsometer stage, a Michelson interferometer, and a Mach-Zehnder interferometer, a Sagnac interferometer, a scanning angle of incidence system, a scanning azimuth angle system, a +/- first order differential reflectometer, a +/- first order differential polarized reflectometer.
摘要翻译：公开了一种确定多层样本的两层之间的覆盖误差的方法。对于每个具有由第一层形成的第一结构和由第二层样品形成的第二结构的多个周期性目标，采用光学系统，从而测量来自每个周期性目标的光信号。在第一和第二结构之间有预定义的偏移。通过使用基于预定偏移的散射测量覆盖技术来分析来自周期性目标的所测量的光信号，在第一和第二结构之间确定覆盖误差。光学系统包括以下装置中的任何一个或多个：成像反射计，成像光谱反射计，偏振光谱成像反射计，扫描反射计系统，具有两个或更多个能够并行数据采集的反射计的系统，具有两个具有能够并行数据采集的两个或更多个偏振分光反射计的系统，具有两个或更多个偏振光谱反射计的系统，其能够进行串行数据采集而不移动晶片台或移动任何光学元件或反射计阶段，成像光谱仪，波长滤波器成像系统，长波长滤波器成像系统，短波长滤波器成像系统，无波长滤波器成像系统，干涉成像系统，成像椭偏仪，光谱椭偏仪，激光椭偏仪具有光弹性调制器，成像光谱椭偏仪，扫描椭偏仪系统，具有能够并行数据采集的两个或更多个椭偏仪的系统，具有两个或更多个椭圆计的系统，能够进行串行数据采集而不移动晶片台或移动任何光学元件或椭圆偏振台，迈克尔逊干涉仪和马赫 - 策德尔干涉仪，Sagnac干涉仪，入射系统的扫描角度，扫描方位角系统，+/-一阶微分反射计，+/-一阶差分偏振反射计。

4. 发明申请

WO2004053426A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 审中-公开
标题翻译：用于使用散射检测来检测重叠错误的装置和方法
公开(公告)号：WO2004053426A1
公开(公告)日：2004-06-24
申请号：PCT/US2003/038784
申请日：2003-12-05
申请人： KLA-TENCOR TECHNOLOGIES CORPORATION
发明人： MIEHER, Walter, D. , LEVY, Ady , GOLOVANEVSKY, Boris , FRIEDMANN, Michael , SMITH, Ian , ADEL, Michael , FABRIKANT, Anatoly , BEVIS, Christopher, F. , FIELDEN, John , BAREKET, Noah , GROSS, Ken , ZALICKI, Piotr , WACK, Dan , DECECCO, Paola , DZIURA, Thaddeus, G.
IPC分类号： G01B11/00
CPC分类号： G03F9/7088 , G03F7/70633 , G03F9/7049 , G03F9/7084
摘要： Disclosed are techniques, apparatus, and targets for determining overlay error between two layers of a sample. In one embodiment, a method for determining overlay between a plurality of first structures in a first layer of a sample and a plurality of second structures in a second layer of the sample is disclosed. Targets A, B, C and D that each include a portion of the first and second structures are provided. Target A is designed to have an offset Xa between its first and second structures portions; target B is designed to have an offset Xb between its first and second structures portions; target C is designed to have an offset Xc between its first and second structures portions; and target D is designed to have an offset Xd between its first and second structures portions. Each of the offsets Xa, Xb, Xc and Xd is preferably different from zero; Xa is an opposite sign and differ from Xb; and Xc is an opposite sign and differs from Xd. The targets A, B, C and D are illuminated with electromagnetic radiation to obtain spectra S A , S B , S C , and S D from targets A, B, C, and D, respectively. Any overlay error between the first structures and the second structures is then determined using a linear approximation based on the obtained spectra S A , S B , S C , and S D .
摘要翻译：公开了用于确定样品的两层之间的重叠误差的技术，装置和目标。在一个实施例中，公开了一种用于确定样品的第一层中的多个第一结构与样品的第二层中的多个第二结构之间的叠层的方法。提供了各自包括第一和第二结构的一部分的目标A，B，C和D。目标A设计成在其第一和第二结构部分之间具有偏移Xa; 目标B设计成在其第一和第二结构部分之间具有偏移Xb; 目标C被设计成在其第一和第二结构部分之间具有偏移Xc; 并且目标D被设计成在其第一和第二结构部分之间具有偏移Xd。偏移量Xa，Xb，Xc和Xd中的每一个优选地不同于零; Xa是相反的符号，不同于Xb; Xc是相反的符号，与Xd不同。目标A，B，C和D用电磁辐射照射，分别从目标A，B，C和D获得光谱SA，SB，SC和SD。然后使用基于获得的光谱SA，SB，SC和SD的线性近似来确定第一结构和第二结构之间的任何覆盖误差。

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