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1. 发明授权

US07663753B2 Apparatus and methods for detecting overlay errors using scatterometry 有权
标题翻译：使用散射法检测重叠误差的装置和方法
公开(公告)号：US07663753B2
公开(公告)日：2010-02-16
申请号：US11963730
申请日：2007-12-21
申请人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Ken Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
发明人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Ken Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
IPC分类号： G01B11/00
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , G03F9/7049 , G03F9/7084
摘要： Disclosed are techniques, apparatus, and targets for determining overlay error between two layers of a sample. 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; target C is designed to have an offset Xc; and target D is designed to have an offset Xd. 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 SA, SB, SC, and SD 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 SA, SB, SC, and SD.
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。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设计为具有偏移Xb; 目标C被设计为具有偏移Xc; 并且目标D被设计为具有偏移量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。

2. 发明授权

US07933016B2 Apparatus and methods for detecting overlay errors using scatterometry 有权
标题翻译：使用散射法检测重叠误差的装置和方法
公开(公告)号：US07933016B2
公开(公告)日：2011-04-26
申请号：US12641663
申请日：2009-12-18
申请人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
发明人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
IPC分类号： G01B11/00
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , G03F9/7049 , G03F9/7084
摘要： Disclosed are techniques, apparatus, and targets for determining overlay error between two layers of a sample. A plurality of targets is provided. Each target includes a portion of the first and second structures and each is designed to have an offset between its first and second structure portions. The targets are illuminated with electromagnetic radiation to thereby obtain spectra from each target at a −1st diffraction order and a +1st diffraction order. It is determined whether there are any overlay error between the first structures and the second structures using a scatterometry technique based on the detected spectra by (i) for each target, determining a first differential intensity between the −1st diffraction order and a +1st diffraction order, (ii) for a plurality of pairs of targets each having a first target and a second target, determining a second differential intensity between the first differential intensity of the first target and the first differential intensity of the second target, and (iii) determining any overlay error between the first structures and the second structures using a scatterometry technique based on the second differential intensities determined from each target pair.
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。提供多个目标。每个目标包括第一和第二结构的一部分，并且每个目标被设计成在其第一和第二结构部分之间具有偏移。用电磁辐射照射靶，从而以第一衍射级和+ 1衍射级获得每个靶的光谱。使用基于检测到的光谱的第一结构和第二结构之间是否存在任何覆盖误差（i）对于每个目标，确定第一衍射级和第+第一衍射之间的第一差分强度（ii）对于具有第一目标和第二目标的多对目标对，确定第一目标的第一差分强度与第二目标的第一差分强度之间的第二差分强度，以及（iii）使用基于从每个目标对确定的第二差分强度的散射测量技术来确定第一结构和第二结构之间的任何覆盖误差。

3. 发明申请

US20100091284A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 有权
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：US20100091284A1
公开(公告)日：2010-04-15
申请号：US12641663
申请日：2009-12-18
申请人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
发明人： Walter D. Mieher , Ady Levy , Boris Golovanevsky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
IPC分类号： G01B11/00
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , G03F9/7049 , G03F9/7084
摘要： Disclosed are techniques, apparatus, and targets for determining overlay error between two layers of a sample. A plurality of targets is provided. Each target includes a portion of the first and second structures and each is designed to have an offset between its first and second structure portions. The targets are illuminated with electromagnetic radiation to thereby obtain spectra from each target at a −1st diffraction order and a +1st diffraction order. It is determined whether there are any overlay error between the first structures and the second structures using a scatterometry technique based on the detected spectra by (i) for each target, determining a first differential intensity between the −1st diffraction order and a +1st diffraction order, (ii) for a plurality of pairs of targets each having a first target and a second target, determining a second differential intensity between the first differential intensity of the first target and the first differential intensity of the second target, and (iii) determining any overlay error between the first structures and the second structures using a scatterometry technique based on the second differential intensities determined from each target pair.
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。提供多个目标。每个目标包括第一和第二结构的一部分，并且每个目标被设计成在其第一和第二结构部分之间具有偏移。用电磁辐射照射靶，从而以第一衍射级和+ 1衍射级获得每个靶的光谱。使用基于检测到的光谱的第一结构和第二结构之间是否存在任何覆盖误差（i）对于每个目标，确定第一衍射级和第+第一衍射之间的第一差分强度（ii）对于具有第一目标和第二目标的多对目标对，确定第一目标的第一差分强度与第二目标的第一差分强度之间的第二差分强度，以及（iii）使用基于从每个目标对确定的第二差分强度的散射测量技术来确定第一结构和第二结构之间的任何覆盖误差。

4. 发明授权

US07317531B2 Apparatus and methods for detecting overlay errors using scatterometry 有权
标题翻译：使用散射法检测重叠误差的装置和方法
公开(公告)号：US07317531B2
公开(公告)日：2008-01-08
申请号：US10729838
申请日：2003-12-05
申请人： Walter D. Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
发明人： Walter D. Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher F. Bevis , John Fielden , Noah Bareket , Kenneth P. Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus G. Dziura , Mark Ghinovker
IPC分类号： G01B11/00 , G01J4/00 , G01N21/00
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , 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 SA, SB, SC, and SD 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 SA, SB, SC, and SD.
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，以获得光谱S A，B，C，S和S，分别来自目标A，B，C和D的SUB> D

5. 发明申请

US20080094630A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 有权
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：US20080094630A1
公开(公告)日：2008-04-24
申请号：US11963730
申请日：2007-12-21
申请人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher Bevis , John Fielden , Noah Bareket , Kenneth Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus Dziura , Mark Ghinovker
发明人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher Bevis , John Fielden , Noah Bareket , Kenneth Gross , Piotr Zalicki , Dan Wack , Paola Dececco , Thaddeus Dziura , Mark Ghinovker
IPC分类号： G01B11/00 , G01N21/55 , G01B9/02
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , 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 SA, SB, SC, and SD 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 SA, SB, SC, and SD.
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，以获得光谱S A，B，C，S和S，分别来自目标A，B，C和D的SUB> D

6. 发明申请

US20080024766A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 有权
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：US20080024766A1
公开(公告)日：2008-01-31
申请号：US11830798
申请日：2007-07-30
申请人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher Bevis , Mark Ghinovker
发明人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant , Christopher Bevis , Mark Ghinovker
IPC分类号： G01N21/00
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 for determining an overlay error between at least two layers in a multiple layer sample. An imaging optical system is used to measure a plurality of measured optical signals from a plurality of periodic targets on the sample. The targets each have a first structure in a first layer and a second structure in a second layer. There are predefined offsets between the first and second structures. A scatterometry overlay technique is then used to analyze the measured optical signals of the periodic targets and the predefined offsets of the first and second structures of the periodic targets to thereby determine an overlay error between the first and second structures of the periodic targets.
摘要翻译：公开了一种用于确定多层样品中至少两层之间的覆盖误差的方法。成像光学系统用于从样本上的多个周期性目标测量多个测量的光信号。目标各自具有第一层中的第一结构和第二层中的第二结构。在第一和第二结构之间有预定义的偏移。然后使用散射测量覆盖技术来分析周期性目标的测量光信号和周期性目标的第一和第二结构的预定偏移量，从而确定周期性目标的第一和第二结构之间的重叠误差。

7. 发明授权

US07879627B2 Overlay marks and methods of manufacturing such marks 有权
标题翻译：覆盖标记和制造这种标记的方法
公开(公告)号：US07879627B2
公开(公告)日：2011-02-01
申请号：US12533295
申请日：2009-07-31
申请人： Mark Ghinovker , Michael Adel , Walter D. Mieher , Ady Levy , Dan Wack
发明人： Mark Ghinovker , Michael Adel , Walter D. Mieher , Ady Levy , Dan Wack
IPC分类号： G01R31/26 , H01L21/66
CPC分类号： G03F7/70633 , G03F9/7076 , G06K9/00281 , G06T7/0004 , G06T7/33 , G06T2207/30148 , Y10S438/975
摘要： An overlay mark for determining the relative shift between two or more successive layers of a substrate and methods for using such overlay mark are disclosed. In one embodiment, the overlay mark includes at least one test pattern for determining the relative shift between a first and a second layer of the substrate in a first direction. The test pattern includes a first set of working zones and a second set of working zones. The first set of working zones are disposed on a first layer of the substrate and have at least two working zones diagonally opposed and spatially offset relative to one another. The second set of working zones are disposed on a second layer of the substrate and have at least two working zones diagonally opposed and spatially offset relative to one another. The first set of working zones are generally angled relative to the second set of working zones thus forming an “X” shaped test pattern.
摘要翻译：公开了用于确定衬底的两个或更多个连续层之间的相对位移的覆盖标记以及使用这种重叠标记的方法。在一个实施例中，覆盖标记包括至少一个测试图案，用于在第一方向上确定基板的第一和第二层之间的相对移动。测试模式包括第一组工作区和第二组工作区。第一组工作区域设置在基板的第一层上，并且具有相对于彼此对角地相对且空间上偏移的至少两个工作区域。所述第二组工作区域设置在所述基板的第二层上，并且具有至少两个工作区域，所述至少两个工作区域相对于彼此对角地相对并且在空间上偏移。第一组工作区域通常相对于第二组工作区域成角度，从而形成“X”形测试图案。

8. 发明申请

US20080049226A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 有权
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：US20080049226A1
公开(公告)日：2008-02-28
申请号：US11926603
申请日：2007-10-29
申请人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant
发明人： Walter Mieher , Ady Levy , Boris Golovanesky , Michael Friedmann , Ian Smith , Michael Adel , Anatoly Fabrikant
IPC分类号： G01B11/00
CPC分类号： G03F9/7088 , G01N21/956 , G01N2021/213 , G03F7/70625 , G03F7/70633 , G03F7/70683 , G03F9/7049 , G03F9/7084
摘要： Disclose is a combined scatterometry mark comprising a scatterometry critical dimension (CD) or profile target capable of being measured to determine CD or profile information and a scatterometry overlay target disposed over the scatterometry CD or profile target, the scatterometry overlay target cooperating with the scatterometry CD or profile target to form a scatterometry mark capable of being measured to determine overlay.
摘要翻译： Disclose是一个组合的散点图标记，包括能够被测量以确定CD或轮廓信息的散射关键维度（CD）或轮廓目标，以及布置在散射测量CD或轮廓目标上的散射测绘覆盖目标，散射测绘覆盖目标与散射光谱CD协调或轮廓目标以形成能够被测量以确定覆盖的散射测量标记。

9. 发明授权

US07181057B2 Overlay marks, methods of overlay mark design and methods of overlay measurements 有权
标题翻译：叠加标记，叠加标记设计方法和覆盖测量方法
公开(公告)号：US07181057B2
公开(公告)日：2007-02-20
申请号：US10186324
申请日：2002-06-26
申请人： Michael Adel , Mark Ghinovker , Walter Dean Mieher , Ady Levy , Dan Wack
发明人： Michael Adel , Mark Ghinovker , Walter Dean Mieher , Ady Levy , Dan Wack
IPC分类号： G06K9/00
CPC分类号： G03F7/70633 , G03F9/7076 , G06K9/00281 , G06T7/0004 , G06T7/33 , G06T2207/30148 , Y10S438/975
摘要： An overlay mark for determining the relative position between two or more successive layers of a substrate or between two or more separately generated patterns on a single layer of a substrate is disclosed. The overlay mark includes a plurality of working zones, which are used to calculate alignment between a first and a second layer of the substrate or between a first and a second pattern on a single layer of the substrate. Each of the working zones is positioned within the perimeter of the mark. Each of the working zones represents a different area of the mark. The working zones are configured to substantially fill the perimeter of the mark such that the combined area of the working zones is substantially equal to the total area of the mark.
摘要翻译：公开了用于确定衬底的两个或更多个连续层之间或在衬底的单个层上的两个或更多个单独产生的图案之间的相对位置的覆盖标记。覆盖标记包括多个工作区，其用于计算衬底的第一层和第二层之间或衬底的单层上的第一和第二图案之间的对准。每个工作区位于标记的周边。每个工作区域代表标记的不同区域。工作区域构造成基本上填满标记的周边，使得工作区域的组合区域基本上等于标记的总面积。

10. 发明授权

US07068833B1 Overlay marks, methods of overlay mark design and methods of overlay measurements 有权
公开(公告)号：US07068833B1
公开(公告)日：2006-06-27
申请号：US09894987
申请日：2001-06-27
申请人： Mark Ghinovker , Michael Adel , Walter Dean Mieher , Ady Levy , Dan Wack
发明人： Mark Ghinovker , Michael Adel , Walter Dean Mieher , Ady Levy , Dan Wack
IPC分类号： G06K9/00
CPC分类号： G03F7/70633 , G03F9/7076 , G06K9/00281 , G06T7/0004 , G06T7/33 , G06T2207/30148 , Y10S438/975
摘要： An overlay mark for determining the relative shift between two or more successive layers of a substrate is disclosed. The overlay mark includes at least one test pattern for determining the relative shift between a first and a second layer of the substrate in a first direction. The test pattern includes a first set of working zones and a second set of working zones. The first set of working zones are disposed on a first layer of the substrate and have at least two working zones diagonally opposed and spatially offset relative to one another. The second set of working zones are disposed on a second layer of the substrate and have at least two working zones diagonally opposed and spatially offset relative to one another. The first set of working zones are generally angled relative to the second set of working zones thus forming an “X” shaped test pattern.

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