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    • 1. 发明授权
    • Charged-particle-beam mapping projection-optical systems and methods for adjusting same
    • 带电粒子束映射投影光学系统及其调整方法
    • US07064339B2
    • 2006-06-20
    • US10816467
    • 2004-03-31
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • G01N21/00G21K7/00
    • H01J37/26G01N23/225H01J37/1471H01J37/226H01J37/265H01J2237/0492H01J2237/057H01J2237/1501H01J2237/2482H01J2237/2538H01J2237/262H01J2237/2806H01J2237/2817H01J2237/282H01J2237/2823H01J2237/2826H01J2237/30438
    • Charged-particle-beam (CPB) mapping projection-optical systems and adjustment methods for such systems are disclosed that can be performed quickly and accurately. In a typical system, an irradiation beam is emitted from a source, passes through an irradiation-optical system, and enters a Wien filter (“E×B”). Upon passing through the E×B, the irradiation beam passes through an objective-optical system and is incident on an object surface. Such impingement generates an observation beam that returns through the objective-optical system and the E×B in a different direction to a detector via an imaging-optical system. An adjustment-beam source emits an adjustment beam used for adjusting and aligning the position of, e.g., the object surface and/or the Wien's condition of the E×B. The adjustment beam can be off-axis relative to the objective-optical system. For such adjusting and aligning, fiducial marks (situated, e.g., in the plane of the object surface) can be used that are optimized for the CPB-optical system and the off-axis optical system. Desirably, the image formed on the detector when electrical voltage and current are not applied to the E×B is in the same position as the image formed on the detector when electrical voltage and current are applied to the E×B. Also provided are “evaluation charts” for use in such alignments that do not require adjustment of the optical axis of the irradiation-optical system, and from which the kinetic-energy distribution of the emitted adjustment beam is stable.
    • 公开了可以快速且准确地执行这种系统的带电粒子束(CPB)映射投影光学系统和调整方法。 在典型的系统中,照射光束从光源发出,通过照射光学系统,并进入维恩滤光片(“ExB”)。 当通过ExB时,照射光束通过物镜光学系统并且入射到物体表面上。 这种冲击产生观察光束,该观察光束经由成像光学系统通过物镜 - 光学系统和ExB以不同的方向返回到检测器。 调整光束源发射用于调整和对准例如物体表面的位置和/或ExB的维恩状态的调节光束。 调节光束可以相对于物镜光学系统偏轴。 对于这种调整和对准,可以使用为CPB光学系统和离轴光学系统优化的基准标记(例如位于物体表面的平面中)。 理想地,当电压和电流未施加到ExB时,在检测器上形成的图像与当将电压和电流施加到ExB时形成在检测器上的图像位于相同的位置。 还提供了用于这种对准的“评估图”,其不需要调整照射光学系统的光轴,并且发射的调节光束的动能分布从该对准是稳定的。
    • 2. 发明授权
    • Charged-particle-beam mapping projection-optical systems and methods for adjusting same
    • 带电粒子束映射投影光学系统及其调整方法
    • US06765217B1
    • 2004-07-20
    • US09302075
    • 1999-04-28
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • G01N2100
    • H01J37/26G01N23/225H01J37/1471H01J37/226H01J37/265H01J2237/0492H01J2237/057H01J2237/1501H01J2237/2482H01J2237/2538H01J2237/262H01J2237/2806H01J2237/2817H01J2237/282H01J2237/2823H01J2237/2826H01J2237/30438
    • Charged-particle-beam (CPB) mapping projection-optical systems and adjustment methods for such systems are disclosed that can be performed quickly and accurately. In a typical system, an irradiation beam is emitted from a source, passes through an irradiation optical system, and enters a Wien filter (“E×B”). Upon passing through the E×B, the irradiation beam passes through an objective optical system and is incident on an object surface. Such impingement generates an observation beam that returns through the objective optical system and the E×B in a different direction to a detector via an imaging optical system. An adjustment-beam source emits an adjustment beam used for adjusting and aligning the position of, e.g., the object surface and/or the Wien's condition of the E×B. The adjustment beam can be off-axis relative to the objective-optical system. For such adjusting and aligning, fiducial marks (situated, e.g., in the plane of the object surface) can be used that are optimized for the CPB optical system and the off-axis optical system. Desirably, the image formed on the detector when electrical voltage and current are not applied to the E×B is in the same position as the image formed on the detector when electrical voltage and current are applied to the E×B. Also provided are “evaluation charts” for use in such alignments that do not require adjustment of the optical axis of the irradiation optical system, and from which the kinetic-energy distribution of the emitted adjustment beam is stable.
    • 公开了可以快速且准确地执行这种系统的带电粒子束(CPB)映射投影光学系统和调整方法。 在典型的系统中,照射光束从光源发射,通过照射光学系统,并进入维恩滤光片(“ExB”)。 当通过ExB时,照射光束通过物镜光学系统并入射到物体表面上。 这种冲击产生观察光束,该观察光束经由成像光学系统通过物镜光学系统和ExB以不同的方向返回到检测器。 调整光束源发射用于调整和对准例如物体表面的位置和/或ExB的维恩状态的调节光束。 调节光束可以相对于物镜光学系统偏轴。 对于这种调整和对准,可以使用为CPB光学系统和离轴光学系统优化的基准标记(例如位于物体表面的平面中)。 理想地,当电压和电流未施加到ExB时,在检测器上形成的图像与当将电压和电流施加到ExB时形成在检测器上的图像位于相同的位置。 还提供了用于这种对准的“评估图”,其不需要调整照射光学系统的光轴,并且发射的调节光束的动能分布从该距离稳定。
    • 3. 发明授权
    • Charged-particle-beam mapping projection-optical systems and methods for adjusting same
    • 带电粒子束映射投影光学系统及其调整方法
    • US07183562B2
    • 2007-02-27
    • US11411349
    • 2006-04-25
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • Hiroshi NishimuraNaoto KiharaKinya KatoToru TakagiAkihiro GotoJunji IkedaKazuya Okamoto
    • G01N21/00G21K7/00
    • H01J37/26G01N23/225H01J37/1471H01J37/226H01J37/265H01J2237/0492H01J2237/057H01J2237/1501H01J2237/2482H01J2237/2538H01J2237/262H01J2237/2806H01J2237/2817H01J2237/282H01J2237/2823H01J2237/2826H01J2237/30438
    • Charged-particle-beam (CPB) mapping projection-optical systems and adjustment methods for such systems are disclosed that can be performed quickly and accurately. In a typical system, an irradiation beam is emitted from a source, passes through an irradiation-optical system, and enters a Wien filter (“E×B”). Upon passing through the E×B, the irradiation beam passes through an objective-optical system and is incident on an object surface. Such impingement generates an observation beam that returns through the objective-optical system and the E×B in a different direction to a detector via an imaging-optical system. An adjustment-beam source emits an adjustment beam used for adjusting and aligning the position of, e.g., the object surface and/or the Wien's condition of the E×B. The adjustment beam can be off-axis relative to the objective-optical system. For such adjusting and aligning, fiducial marks (situated, e.g., in the plane of the object surface) can be used that are optimized for the CPB-optical system and the off-axis optical system. Desirably, the image formed on the detector when electrical voltage and current are not applied to the E×B is in the same position as the image formed on the detector when electrical voltage and current are applied to the E×B. Also provided are “evaluation charts” for use in such alignments that do not require adjustment of the optical axis of the irradiation-optical system, and from which the kinetic-energy distribution of the emitted adjustment beam is stable.
    • 公开了可以快速且准确地执行这种系统的带电粒子束(CPB)映射投影光学系统和调整方法。 在典型的系统中,照射光束从光源发出,通过照射光学系统,并进入维恩滤光片(“ExB”)。 当通过ExB时,照射光束通过物镜光学系统并且入射到物体表面上。 这种冲击产生观察光束,该观察光束经由成像光学系统通过物镜 - 光学系统和ExB以不同的方向返回到检测器。 调整光束源发射用于调整和对准例如物体表面的位置和/或ExB的维恩状态的调节光束。 调节光束可以相对于物镜光学系统偏轴。 对于这种调整和对准,可以使用为CPB光学系统和离轴光学系统优化的基准标记(例如位于物体表面的平面中)。 理想地,当电压和电流未施加到ExB时,在检测器上形成的图像与当将电压和电流施加到ExB时形成在检测器上的图像位于相同的位置。 还提供了用于这种对准的“评估图”,其不需要调整照射光学系统的光轴,并且发射的调节光束的动能分布从该对准是稳定的。
    • 5. 发明授权
    • Electron-optical system and inspection method using the same
    • 电子光学系统及使用其的检验方法
    • US06661008B2
    • 2003-12-09
    • US09337131
    • 1999-06-21
    • Toru TakagiAkihiro Goto
    • Toru TakagiAkihiro Goto
    • H01J490044
    • G01N23/2251H01J37/28H01J2237/2448H01J2237/2817
    • An electron-optical system, including irradiation means which irradiates a surface of a sample with an irradiating electron beam and observation means which focuses an observational electron beam emitted from the surface of the sample as an image on electron beam detection means. The observation means includes a plurality of electrodes. The electron-optical system further includes an accelerating electric field disposed between the surface of the sample and at least one of the plurality of electrodes so that the sample is biased to a negative potential, and so that the velocity of the observational electron beam that has just been emitted from the surface of the sample increases monotonically to a positive potential. The velocity of the observational electron beam that has been accelerated to the positive potential is reduced to the ground potential by another of the plurality of electrodes which form the observation means.
    • 一种电子光学系统,包括用照射电子束照射样品表面的照射装置和将从样品表面发射的观测电子束聚焦成电子束检测装置的观察装置。 观察装置包括多个电极。 电子 - 光学系统还包括加速电场,其设置在样品的表面和多个电极中的至少一个之间,使得样品被偏压到负电位,并且使得观察电子束的速度具有 刚刚从样品表面发射的单体增加到正电位。 通过形成观察装置的多个电极中的另一个将已经加速到正电位的观测电子束的速度减小到接地电位。
    • 6. 发明授权
    • Electron beam type inspection device and method of making same
    • 电子束型检查装置及其制造方法
    • US06365897B1
    • 2002-04-02
    • US09216598
    • 1998-12-18
    • Muneki HamashimaAkihiro GotoHiroshi Nishimura
    • Muneki HamashimaAkihiro GotoHiroshi Nishimura
    • H01J3726
    • H01J37/28H01J37/265H01J2237/2813H01J2237/2817
    • Electron beam type inspection device for generating images of specimens (e.g., silicon wafers, etc.) includes an electron gun which emits an electron beam, an electron beam optical system which causes the electron beam to form an irradiation region on a surface of a specimen, a detector which detects at least one of second order electrons and reflected electrons reflected by the irradiation region, a projection optical system projecting the second order electrons and the reflected electrons onto a detection surface within the detector. The second order electrons and the reflected electrons correspond to an observation region within the irradiation region. The inspection device also includes a magnification controller which controls the size of the observation region and the magnification of the projection optical system, and an irradiation controller which controls the current density of the irradiation region based on the size of the observation region. Also provided is a method of making a corresponding inspection device which includes steps of providing and assembling the aforementioned component parts.
    • 用于产生试样(例如,硅片等)的图像的电子束型检查装置包括发射电子束的电子枪,使电子束在试样表面形成照射区域的电子束光学系统 检测器,其检测由所述照射区反射的二次电子和反射电子中的至少一个;投影光学系统,将所述二次电子和所述反射的电子投射到所述检测器内的检测面上。 二次电子和反射电子对应于照射区域内的观察区域。 检查装置还包括控制观察区域的尺寸和投影光学系统的放大率的放大率控制器,以及基于观察区域的尺寸来控制照射区域的电流密度的照射控制器。 还提供了制造相应的检查装置的方法,其包括提供和组装上述部件的步骤。