WO2006016613A1 - 走査型電子顕微鏡 - Google Patents
走査型電子顕微鏡 Download PDFInfo
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- WO2006016613A1 WO2006016613A1 PCT/JP2005/014677 JP2005014677W WO2006016613A1 WO 2006016613 A1 WO2006016613 A1 WO 2006016613A1 JP 2005014677 W JP2005014677 W JP 2005014677W WO 2006016613 A1 WO2006016613 A1 WO 2006016613A1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/026—Means for avoiding or neutralising unwanted electrical charges on tube components
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
- H01J37/28—Electron or ion microscopes; Electron or ion diffraction tubes with scanning beams
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/004—Charge control of objects or beams
- H01J2237/0041—Neutralising arrangements
- H01J2237/0044—Neutralising arrangements of objects being observed or treated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/10—Lenses
- H01J2237/12—Lenses electrostatic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/26—Electron or ion microscopes
- H01J2237/28—Scanning microscopes
- H01J2237/2813—Scanning microscopes characterised by the application
- H01J2237/2817—Pattern inspection
Definitions
- the present invention relates to an insulator sample in an apparatus using a charged particle beam as a probe, such as a scanning electron microscope (SEM) converged ion beam processing observation apparatus (Focused Ion Beam).
- SEM scanning electron microscope
- Focused Ion Beam converged ion beam processing observation apparatus
- the present invention relates to a technique for stably measuring a pattern formed on a glass substrate sample, such as a reticle (mask) or a quartz wafer, where charges are easily accumulated by irradiation with a charged particle beam, using the charged particle beam apparatus. Is.
- a beam drift with a speed of several nm / s caused by local charged charge movement or potential gradient on an insulator sample which is a problem when measuring with high magnification and high accuracy, is possible. It differs from the dynamic electrode voltage control, which focuses on the intentional control of the potential barrier, in terms of its purpose and effect.
- Patent Document 12 and Patent Document 13 disclose an observation method of an insulator sample.
- a device using the retarding method which is a high-resolution SEM technique that passes the electron beam through the lens field with a high energy by setting the sample or the sample stage to a deceleration potential with respect to the primary electron beam.
- An electrode is arranged so as to cover the sample, and the same voltage as the retarding voltage is applied, so that the sample is placed in an electric field and the surface of the insulating sample is controlled to an arbitrary potential or a secondary electron.
- Patent Document 14 discloses a configuration in which an objective lens pole piece and an intermediate electrode are disposed above the objective lens pole piece in an SEM using the retarding method.
- the intermediate electrode is a technique for neutralizing the charging of the sample by applying a negative bias to the objective lens piece in order to return secondary electrons generated from the sample onto the sample.
- Patent Document 13 This configuration itself is disclosed in Patent Document 13 described above.
- the principle and phenomenon are disclosed in Patent Document 11. Therefore, in the configuration of the prior art, since the effect of the sample stage is lacking, it is impossible to make the potential gradient on the sample surface uniform, and in the content disclosed in this configuration, it is on the insulator sample. Inspection and length measurement at high magnification, where charging stabilization and beam drift are problems, are difficult, and no specific solution to these problems has been disclosed.
- Patent Document 1 JP-A-8-68772
- Patent Document 2 JP-A-8-222176
- Patent Document 3 JP-A-10-172493
- Patent Document 4 JP 2002-131887
- Patent Document 5 JP-A-9-304040
- Patent Document 6 JP-A-5-174768
- Patent Document 7 JP 2002-203774 A
- Patent Document 8 US6555815B2
- Patent Document 9 JP 2000-36273 A
- Patent Document 10 JP-A-10-312765
- Patent Document 11 Patent 2130001
- Patent Document 12 JP-A-09-171791
- Patent Document 13 JP 2001-026719 A
- Patent Document 14 JP 2002-250707
- Non-Patent Literature 1 A DATABASE OF ELECTRON-SOLID INTERACTION SDavid C Joy EM Facility, University of Tennesee, and Oak Ridge National Laboratory
- the object of the present invention is to measure the structure of a sample with an insulator partially exposed to the surface using a charged particle beam and the structure on the sample using the insulator as a substrate with high resolution and good reproducibility. For this purpose, the following issues need to be overcome.
- the second problem is to provide means and conditions capable of effectively performing the self-relaxing action of charging.
- a third problem is to provide an apparatus capable of observing a high-resolution image while overcoming the first and second problems.
- the energy of the charged particle beam applied to the sample is set to be equal to or higher than the generation efficiency of secondary electrons generated from the sample.
- a plate electrode having a hole through which a primary charged particle beam can pass can be applied independently, and is placed opposite to the sample, and the sample stage on which the sample is loaded is independent.
- a voltage can be applied, and the surface facing the sample should be flattened so that there is no unevenness.
- the diameter D of the hole provided in the plate electrode and the distance L between the plate electrode and the sample are set so as to satisfy the relationship of D / L ⁇ 1.5.
- a positive voltage of several to several tens of volts is applied to the plate electrode with respect to the surface potential of the sample so that the induced charge does not accumulate excessively and secondary electrons are detected. To do. Further, as a pre-measurement step, the primary charged particle beam is irradiated and the voltage applied to the plate electrode is changed to a negative voltage with a predetermined initial value power V power several tens of volts. To be long.
- the potential gradient on the surface of the insulator sample can be eliminated, and the charge generated when the insulator sample is irradiated with a charged particle beam can be relaxed and stabilized at high speed.
- S / N and contrast are stable and beam drift can be eliminated even at high magnifications for length measurement.
- the plate electrode voltage for stabilizing charging can be set automatically, optimum conditions can be set for various samples with different charge amounts, and the difference in samples and operator skill can be set. Regardless of this, it is possible to measure the length of the insulator sample.
- FIG. 1 is a basic scanning electron microscope (SEM) configuration using the retarding method.
- Components 1 to 12 of this embodiment are all or partly housed in a vacuum vessel. Yes.
- the electron source 1 is a so-called Schottky electron source in which zirconium oxide is applied to tungsten processed into a needle shape and diffused to reduce the work function of the electron emission portion at the tip of the electron source.
- An electron gun acceleration power source 18 that applies an initial acceleration voltage of 3 kV to the electron source is heated to an appropriate temperature by a constant current power source 15 floating on the electron source, and the electron source force also draws out an electron field emission voltage
- an electron beam with a stable emission current amount in which the energy distribution width of the emitted electron beam is narrow can be obtained. Further, the amount of emission current can be increased or decreased by connecting a power source 16 capable of applying a negative voltage to the initial acceleration power source 18 to the suppression electrode 2 installed in the vicinity of the electron source.
- the magnetic lens 4 and the magnetic lens 5 have an action of converging an electron beam, and are set to optical conditions suitable for the present embodiment.
- the electron beam can be scanned on the sample 11 with a desired F0V (Field Of View) by the deflection coil 8, and secondary electrons generated from the sample 11 are caused by the magnetic field of the objective lens 9 and the control electrode 10.
- the secondary electron detector 13 is an Everhart Thomley type detector composed of a scintillator, a light guide, and a secondary electron multiplier.
- a semiconductor detector or a microchannel plate may be used. good.
- the secondary electron detector 13 is provided with a conversion electrode 6 that converts the secondary electrons and reflected electrons that have accelerated and increased from the sample 11 into low-speed secondary electrons again before the secondary electron detector 13, and By providing an EXB filter 7 that can deflect only the low-speed secondary electrons in the secondary electron detector 1 3 direction without affecting the trajectory of the primary electron beam, secondary electron collection efficiency High detection system.
- One or more mesh metal electrodes are used in the EXB filter 7, and the sample is applied with a voltage equivalent to the voltage applied by the retarding power source 21 to the sample table 12.
- 11 is provided with a potential blocking type energy filter (not shown) that can generate a potential barrier against the energy of the secondary electrons that are generated and accelerated from 11 (not shown).
- a potential blocking type energy filter (not shown) that can generate a potential barrier against the energy of the secondary electrons that are generated and accelerated from 11 (not shown).
- the blocking potential of the energy filter is varied, the surface potential of the sample 11 due to charging generated when the sample 11 is irradiated with the primary electron beam can be measured. Since the change in the optical magnification can be calculated using the upper part of the potential, if the deflection current of the deflection coil 8 is reset from this result, the magnification can be accurately set regardless of the charging of the sample surface.
- the above is the basic configuration of the SEM of the present embodiment.
- the object of the present invention is that the sample 11 is not affected by electrification when the sample is partially exposed on the surface or the sample using the insulator as a substrate, such as a reticle (mask) or a liquid crystal substrate. This is to perform stable length measurement, and the configuration for that purpose will be described below.
- the secondary electron emission rate ⁇ in the case of Si ⁇ , the secondary electron emission energy depends on the incident energy of the primary electron beam as shown in Fig. 2.
- the secondary electron emission rate changes. It is known that the sample surface is positively charged if it is greater than ⁇ force ⁇ and negatively charged if ⁇ is less than 1.
- the energy around the IkeV used in a normal low acceleration SEM is used so that the generation efficiency of secondary electrons generated from the sample is 1 or more.
- Set energy. Incident energy near 50eV may be selected, but it is also unsatisfactory from the point of resolution that changes in secondary electron emission rate with respect to incident energy are difficult to control. Further, if an incident energy in the vicinity of the ⁇ force is selected, it is advantageous in terms of stabilizing the charge amount and automating the voltage setting applied to the control electrode 10 as will be described later.
- an insulating sample particularly a sample using glass as a substrate, is arranged between the control electrode 10 and the sample table 11 which are flat electrodes, a vacuum is formed between the control electrode 10 and the sample table 11.
- the hole formed in the control electrode 10 through which the primary electron beam can pass is a potential formed by a member positioned in the direction of the electron source 1 of the control electrode 10 from the hole. If it is so large that it soaks into the vicinity of the sample, the potential will enter the sample having a dielectric constant greater than that of the vacuum, so that the equipotential surface will bend on the sample surface, resulting in a potential gradient in the sample surface. It will be.
- a voltage can be applied independently using the control electrode power supply 20, the primary electron wire can pass through, and it is arranged on an axis that coincides with the central axis of the objective lens magnetic pole hole.
- the control electrode 10, which is a flat plate electrode having a hole formed thereon, is arranged opposite to the sample 11, and the sample table 12 on which the sample 11 is loaded can be independently applied with a voltage by a retarding power source 21.
- the surface facing the sample 11 is flattened to have a structure with no irregularities, so that the sample 11 is sandwiched between the control electrode 10 and the sample stage 12.
- the electric field between the control electrode 10 and the sample 11 becomes a parallel electric field, and the sample surface can be made coincident with the equipotential surface, so that the equipotential surface is not curved on the sample surface.
- the equipotential surface can be arbitrarily set by the voltage applied to the control electrode 10 and the sample stage 12.
- the surface of the sample is subjected to an electric field stain with the voltage applied to the control electrode 10 and the sample stage 12 and each dimension using the known dielectric constant. It is set to a potential that can be accurately calculated using the uration.
- a high positive voltage is applied to the entire magnetic path or a part of the isolated magnetic path to allow the electron beam to pass through the lens field at high speed as one of the techniques for increasing the resolution of SEM.
- a 5 kV voltage is applied to the objective lens 9 with a boosting power supply 25, and a retarding voltage of -2k is applied to the sample stage 12. V is applied and the control electrode 22 is set to -1.9 kV.
- FIG. 3A shows a force when the control electrode 22 does not include the control electrode 22, or when the hole through which the primary electron beam provided at the center passes as in the control electrode 22 is large. It can be seen that a potential gradient is generated on the surface of the insulating sample 11 because the boosting voltage enters from the hole to form the equipotential line distribution 23.
- FIG. 3B shows a flatness as can be seen from the force equipotential line distribution 27 in which the boosting voltage of the objective lens 9 is reduced and the hole diameter of the control electrode is reduced like the control electrode 26.
- the surface of sample 11 can be made to coincide with the equipotential surface. This effect can be obtained even when the boosting voltage is set high, and further by reducing the hole diameter of the control electrode 26 or increasing the distance between the control electrode 26 and the sample 11. The direction distortion increases and the resolution decreases significantly.
- FIG. 4A is a cross-sectional view of the structure of the metallic sample stage 28 including the control electrode 10 when a reticle is used as a sample.
- the insulator sample 11 is contained in the sample stage 28, and the upper surface of the sample 11 and the sample This is a case where the top surface of the base 28 is in the same plane.
- the support table 24 is a spacer that does not directly contact the sample table 11 so as not to damage the reticle, and is made of a material that does not generate foreign matter.
- the height of the support base 24 affects the rate of change of the voltage acting on the sample 11 when the voltage of the control electrode 10 described later changes, that is, the sensitivity, and therefore there should be no variation between apparatuses.
- FIG. 4B is a part of FIG. 4A and shows the equipotential line distribution when observing the end of the sample 11.
- the primary electron beam 29 is located 5mm inside from the end of the sample. This is the case of irradiation.
- the conditions are examples of a combination of a retarding voltage and a control electrode voltage suitable for effectively carrying out the present invention, and the arrangement of the control electrode.
- the retarding voltage is ⁇ 2100 V
- the control electrode voltage is ⁇ 2000 V
- the distance between the electrode 10 and the sample 11 is 1 mm
- the hole diameter of the control electrode is 1 mm
- the height of the support 24 is 0.5 mm.
- the equipotential line distribution is as in the equipotential line group 30, and when the dimension 31 is about the same as the thickness of the sample, the potential density formed between the control electrode 10 and the sample stage 28 and the A large gap occurs in the potential density formed by the control electrode 10 and the sample 11, so that the electron beam irradiation at the end of the sample is performed. A large potential gradient is generated at the location.
- FIG. 5A is a cross-sectional view of another form of the sample stage.
- the dimension 31 is reduced to the dimension 33, the equipotential line distribution becomes the equipotential line group 34, and the potential gradient on the surface of the sample 11 at the end of the sample 11 is eliminated. It is possible to minimize the movement of charged charges.
- the dimension 33 is applicable not only to the depth of the depression of the sample table 32 as shown, but also to the height of the structure arranged on the sample table 32 around the sample 11. it can. Considering the voltage conditions suitable for the invention, the position of the control electrode 10, the height of the support 24, etc., the dimension 33 is desirably 1/2 or less of the sample thickness.
- the potential gradient on the surface of the insulator sample can be reduced by considering the structurally generated potential distribution, and one factor of beam drift can be eliminated.
- the problem cannot be solved without taking measures against potential fluctuations on the sample surface that are caused by the accumulation of charged charges generated when an electron beam is irradiated onto an insulating sample.
- a suitable voltage of the control electrode 10 is about 50 V with respect to the sample surface potential.
- the charge on the sample due to the irradiation of the primary electron beam tends to settle down to a constant charge amount over time due to self-relaxation, but the secondary electrons generated from the charged region return uniformly to the charged region only. Therefore, the charge amount is not yet sufficiently small, and the charge distribution in the region is not uniform.
- the potential barrier immediately above the charging region described in the problem to be solved by the invention is small enough to allow the secondary electrons to pass therethrough.
- the primary electron beam irradiation area is about 70 ⁇ m square.
- Figure 6A shows that the initial voltage of the control electrode 10 is -1610V, This is the equipotential line distribution when the retarding voltage is -1700V.
- the incident energy of the primary electron beam is about IkeV, and ⁇ is slightly larger than 1.
- a positive charge of several to several tens of volts is quickly charged in the charging region 42 that substantially coincides with the irradiation region of the primary electron beam.
- the distribution looks like equipotential line group 41. Fig.
- FIG. 6 (b) is a local enlargement of the charged region 42 in Fig. 6 (b), and the equipotential line spacing is IV. Since a negative potential barrier 44 with respect to the charged potential is formed immediately above the charged region 42, secondary electrons of about 2 eV, which are the largest in the energy distribution of secondary electrons, are repelled by the potential barrier 44 and are Re-incident in the vicinity of the charged region 42 causes a self-relaxing action that cancels the positively charged charge.
- FIGS. 7A and 7B show a state in which the charge amount is reduced by the action of FIGS. 6A and 6B.
- the equipotential line distribution changes as shown in the equipotential line group 45 in FIG. 7A, and when the charged region 46 is viewed locally, the equipotential line group 44 becomes the equipotential line group as shown in FIG. 7B.
- the potential barrier just above the charged region 46 is relaxed, and the secondary electrons 47 with a low energy of about 2 eV are also accelerated in the direction of the electron source 1 and can be detected by the secondary electron detector 13. Become so. This phenomenon coincides with the fact that the brightness of the SEM image decreases momentarily and becomes brighter again immediately after the sample 11 is irradiated with the primary electron beam.
- the stabilization of the potential of the charged portion by the self-relaxation action requires irradiation with an electron beam for a long time of several tens of seconds to several minutes depending on the amount of irradiation current.
- the voltage applied to the control electrode 10 while irradiating the primary electron beam from a negative voltage of several volts to several tens of volts with respect to the initial value, it is possible to intentionally create a non-uniform charged region.
- a potential barrier is generated to return the secondary electrons to the charged region, and the charge amount can be reduced and stabilized to such an extent that magnification error does not become a problem.
- the control electrode 10 and the sample stage 12 can be stabilized.
- the potential gradient is eliminated over a wide range, and the unstable movement of the electric charge generated by the potential gradient is eliminated, so that a force stable region can be created on the surface of the insulator sample.
- a good SEM image of SZN without obstruction of secondary electrons can be obtained, and beam drift of the primary electron beam can be eliminated.
- FIGS. 8A, 8B, 9A, and 9B The above process can be expressed as shown in FIGS. 8A, 8B, 9A, and 9B.
- the amount of charge is still large, so that the diffusion due to the concentration gradient of the charge and the length measurement magnification are distorted.
- the potential barrier 52 of about IV can be re-formed as shown in FIG. 8B immediately above the charged region 49 of FIG. Since secondary electrons having a return to the charged region 49, the charged charge further decreases.
- the charge in the charged region 54 in FIG. 9A is reduced and the equipotential distribution is flattened like the equipotential line group 53 in the vicinity of the sample.
- Fig. 9B there is no potential barrier for the low-energy secondary electrons 55 in the equipotential line group 56 even when the charged region 54 is viewed locally. Detection is possible.
- FIG. 10 schematically shows the relationship with the charge amount of the sample 11 when the control electrode voltage 10 is changed.
- the area A in FIG. 10 is a time zone shortly after the sample 11 is irradiated with the primary electron beam, and the positive charge progresses rapidly as shown in graph 38.
- the voltage of the control electrode 10 remains at the initial value 35, and the SEM image becomes dark.
- the voltage change of the control electrode 10 is automatically detected by detecting the brightness change of the SEM image or the secondary electron current amount. Can be terminated.
- the amount of charge varies depending on the type and shape of the sample, and the detected amount of secondary electrons may decrease. Therefore, the initial value of the voltage applied to the control electrode 10 can vary. Therefore, it is obvious that the optimum initial value can be automatically determined by sweeping the voltage of the control electrode 10 over a wide range using the same method.
- the brightness change of the SEM image or the detection of the amount of secondary electron current is specifically performed by changing the voltage of the control electrode 10 while irradiating the sample with the primary electron beam, and capturing the SEM captured at regular intervals. It is easy to find the relationship between the digital gradation of the image and the number of pixels belonging to it.
- the voltage change of the control electrode 10 can be terminated when the gradation and the number of pixels are above or below a predetermined threshold, and the electrode voltage at that time is used as the initial value of the voltage of the control electrode 10 You can also
- the beam drift is such that the trajectory of the primary electron beam is deflected by the electric potential gradient in the vicinity of the sample surface.
- This force field is applied to the irradiation region of the primary electron beam. From the irradiation area of charged particles (for example, several ⁇ m square) at a high magnification such that the potential gradient that causes the field is measured. It is important that the width is sufficiently wide and uniform in the range.
- the voltage applied to the plate electrode is changed from the initial value to a negative voltage of several volts to several tens of volts to reduce the charge amount and at the same time eliminate the potential gradient.
- it is effective to set the magnification to a low magnification in advance and measure the magnification as a high magnification after implementing the means.
- the voltage applied to the control electrode 10 is a lens field between the objective lens and the sample.
- a deceleration potential is generated in the primary charged particle beam. Since the chromatic aberration of the lens can be reduced as the energy of the primary charged particle beam passing through the lens field increases, it is important to arrange the control electrode 10 as close to the sample surface as possible.
- the control electrode 10 is provided with a passage hole for a primary electron beam, as described above, there is a possibility that a potential gradient is generated on the sample surface by the entrance of the potential from the hole. Therefore, the distance between the control electrode 10 and the sample 11 cannot be made arbitrarily close.
- the degree of penetration of this potential can be considered to be typically the radius of the hole, and according to electric field simulation, the relationship between the diameter D of the hole and the distance L between the plate electrode and the sample is If D / L ⁇ 1, the potential gradient on the sample surface can be sufficiently reduced. Therefore, the lens aberration can be reduced so as to satisfy the performance of the apparatus, and the diameter of the hole is set to D satisfying the above relationship with respect to L, which is a means for solving the third problem.
- FIG. 1 is an overall view of an embodiment of the present invention.
- FIG. 3A is an example of the shape of the control electrode and the equipotential line distribution for explaining the effect of the present invention.
- FIG. 3B is an example of the shape of the control electrode and the equipotential line distribution for explaining the effect of the present invention.
- FIG. 4A An example of a sample stage including a control electrode and a cross-sectional view of the sample.
- FIG. 4B An example of equipotential line distribution at the sample edge.
- FIG. 5A An example of a sample stage including a control electrode and a cross-sectional view of the sample.
- FIG. 5B An example of equipotential line distribution at the edge of the sample.
- FIG. 6B A schematic view of the local potential barrier of the charged part and how the secondary electrons return to the sample.
- FIG. 7B A schematic view of the state in which the local potential barrier of the charged portion decreases and the amount of secondary electrons returning to the sample decreases.
- FIG. 8A Equipotential line distribution when the potential of the control electrode is changed in the negative direction and the potential barrier is re-formed in the charged region.
- (Sen 8B) A schematic diagram of the local potential barrier and secondary electrons returning to the sample at the charged part.
- FIG. 9A Equipotential line distribution with reduced charge on the sample after the process of FIGS. 8A and 8B.
- Control electrode voltage initial value Control electrode voltage control graph
- Control electrode voltage control graph Charge amount change graph Charge amount change graph Charge amount change graph
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/566,634 US7459681B2 (en) | 2004-08-11 | 2005-08-10 | Scanning electron microscope |
EP05770592A EP1777729B1 (en) | 2004-08-11 | 2005-08-10 | Scanning type electron microscope |
US12/289,461 US8698080B2 (en) | 2004-08-11 | 2008-10-28 | Scanning electron microscope |
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JP2004234324A JP4519567B2 (ja) | 2004-08-11 | 2004-08-11 | 走査型電子顕微鏡およびこれを用いた試料観察方法 |
JP2004-234324 | 2004-08-11 |
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US10/566,634 A-371-Of-International US7459681B2 (en) | 2004-08-11 | 2005-08-10 | Scanning electron microscope |
US12/289,461 Continuation US8698080B2 (en) | 2004-08-11 | 2008-10-28 | Scanning electron microscope |
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WO2006016613A1 true WO2006016613A1 (ja) | 2006-02-16 |
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US (2) | US7459681B2 (ja) |
EP (1) | EP1777729B1 (ja) |
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JP2007329337A (ja) * | 2006-06-08 | 2007-12-20 | Hitachi High-Technologies Corp | 半導体ウェーハ検査装置および半導体ウェーハ検査方法 |
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JP5635009B2 (ja) * | 2009-12-07 | 2014-12-03 | 株式会社日立製作所 | 検査装置 |
WO2018025849A1 (ja) * | 2016-08-02 | 2018-02-08 | 松定プレシジョン株式会社 | 荷電粒子線装置及び走査電子顕微鏡 |
JPWO2018025849A1 (ja) * | 2016-08-02 | 2019-06-13 | 松定プレシジョン株式会社 | 荷電粒子線装置及び走査電子顕微鏡 |
CN115019994A (zh) * | 2022-07-21 | 2022-09-06 | 中国核动力研究设计院 | 一种基于离子注入机的透射电镜试样辐照装置及控温方法 |
CN115019994B (zh) * | 2022-07-21 | 2024-05-14 | 中国核动力研究设计院 | 一种基于离子注入机的透射电镜试样辐照装置及控温方法 |
Also Published As
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US7459681B2 (en) | 2008-12-02 |
JP2006054094A (ja) | 2006-02-23 |
US8698080B2 (en) | 2014-04-15 |
JP4519567B2 (ja) | 2010-08-04 |
EP1777729B1 (en) | 2011-11-09 |
EP1777729A4 (en) | 2009-09-16 |
US20070057183A1 (en) | 2007-03-15 |
US20090065694A1 (en) | 2009-03-12 |
EP1777729A1 (en) | 2007-04-25 |
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