WO2014192379A1 - 荷電粒子線装置 - Google Patents
荷電粒子線装置 Download PDFInfo
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- WO2014192379A1 WO2014192379A1 PCT/JP2014/057435 JP2014057435W WO2014192379A1 WO 2014192379 A1 WO2014192379 A1 WO 2014192379A1 JP 2014057435 W JP2014057435 W JP 2014057435W WO 2014192379 A1 WO2014192379 A1 WO 2014192379A1
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- Prior art keywords
- charged particle
- particle beam
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- conductive
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- 239000002245 particle Substances 0.000 title claims abstract description 40
- 239000004020 conductor Substances 0.000 claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 description 23
- 230000005672 electromagnetic field Effects 0.000 description 18
- 239000000463 material Substances 0.000 description 11
- 238000005259 measurement Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000010894 electron beam technology Methods 0.000 description 9
- 238000003860 storage Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67201—Apparatus for manufacturing or treating in a plurality of work-stations characterized by the construction of the load-lock chamber
-
- 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
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
- H01J37/09—Diaphragms; Shields associated with electron or ion-optical arrangements; Compensation of disturbing fields
-
- 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
- H01J37/16—Vessels; Containers
- H01J37/165—Means associated with the vessel for preventing the generation of or for shielding unwanted radiation, e.g. X-rays
-
- 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
- H01J37/18—Vacuum locks ; Means for obtaining or maintaining the desired pressure within the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/6719—Apparatus for manufacturing or treating in a plurality of work-stations characterized by the construction of the processing chambers, e.g. modular processing chambers
-
- 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
- H01J2237/02—Details
- H01J2237/026—Shields
- H01J2237/0262—Shields electrostatic
-
- 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
- H01J2237/02—Details
- H01J2237/026—Shields
- H01J2237/0264—Shields magnetic
-
- 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
- H01J2237/02—Details
- H01J2237/026—Shields
- H01J2237/0266—Shields electromagnetic
-
- 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
Definitions
- the present invention relates to a charged particle beam apparatus having a shield structure for suppressing the penetration of radio waves or the like into a charged particle beam apparatus, and in particular, irradiation of a charged particle beam to a sample and sample exchange are performed in parallel.
- the present invention relates to a charged particle beam apparatus including a shield structure that effectively suppresses intrusion of radio waves and the like.
- a semiconductor manufacturing inspection apparatus When a semiconductor manufacturing apparatus using an electron beam, or a measurement / inspection apparatus (hereinafter referred to as a semiconductor manufacturing inspection apparatus) is affected by a magnetic field wave in the manufacturing line, the acquired sample image is distorted. As a result, an error occurs in the measured value, or measurement is impossible.
- a semiconductor manufacturing line an electromagnetic field leaking from an adjacent apparatus or an electromagnetic field generated when an apparatus is operated automatically affects an electron beam, so that a semiconductor manufacturing inspection apparatus using an electron beam causes a measurement error. There is a case.
- Patent Document 1 In order to reduce the influence of the electromagnetic field on the electron beam, in Patent Document 1, the influence of the electromagnetic field is reduced by covering the device with a shielding material. According to Patent Document 1, the leakage and inflow of an electromagnetic field in the apparatus is reduced by installing a door up-and-down mechanism made of a shielding material at a transfer port for transferring a sample into the apparatus. Moreover, in patent document 2, it seals without a gap
- JP 2000-306971 A (corresponding US Pat. No. 6,800,803) JP 2006-340936 A (corresponding US Pat. No. 7,528,602)
- Patent Document 1 discloses a technique for preventing leakage of electromagnetic waves to the outside by disposing an electromagnetic wave shielding plate between a sample transport path and an external atmosphere.
- Patent Document 2 discloses a magnetic field measuring apparatus provided with a magnetic field shielding door to shield an external magnetic field.
- a sample to be processed next is processed during a process using a charged particle beam in order to shorten the processing time. Processing to be introduced into the apparatus is performed.
- a shielding member for example, a vacuum valve
- a vacuum valve provided between a vacuum chamber and an atmospheric space is provided in order to secure a sample transport path during charged particle beam irradiation. It is necessary to open it. For this reason, it is difficult to always cover the sample transport path of the charged particle beam apparatus with a shielding member or the like. Therefore, there is a need for a technique for suppressing the influence of external electromagnetic waves even when the shielding member is located outside the transport path.
- a charged particle beam apparatus equipped with a preliminary exhaust chamber has a state in which a vacuum valve provided between the preliminary exhaust chamber and the atmosphere is opened when a charged particle beam is irradiated. It is conceivable that the influence of the external electromagnetic wave on the charged particle beam changes because it is placed in two closed states. In particular, in a charged particle beam apparatus that requires reproducibility of measurement and inspection, it is desirable to suppress such a change in influence on the beam.
- the vacuum chamber has an opening surrounding a sample transport path, and the conductive material disposed on the atmosphere side with the vacuum chamber.
- the present invention proposes a charged particle beam device including a conductive material that conducts between members and surrounds the opening.
- the vacuum chamber has an opening surrounding the sample transport path, and is disposed on the atmosphere side with the vacuum chamber.
- the present invention proposes a charged particle beam apparatus in which a conductive sheet, a conductive mesh, or a plurality of conductive tapes provided with a plurality of openings are connected between conductive members.
- FIG. 2 is an example of a configuration diagram of an electron microscope apparatus 100.
- FIG. 2 is an example of connection of conductive materials in the electron microscope apparatus 100.
- FIG. 2 is an example of a configuration diagram of an electron microscope apparatus 300.
- FIG. 3 is an example of connection of conductive materials in the electron microscope apparatus 300.
- the embodiment described below relates to a charged particle beam apparatus, and more particularly to a charged particle beam apparatus including a preliminary exhaust chamber (vacuum chamber) for pre-exhausting a sample atmosphere before the sample is introduced into the sample chamber.
- a preliminary exhaust chamber vacuum chamber
- a sample atmosphere before the sample is introduced into the sample chamber.
- an electron microscope which is one embodiment of the charged particle beam apparatus will be described as an example.
- the present invention can be applied to other charged particle beam apparatuses such as an ion beam apparatus that irradiates a focused ion beam. is there.
- An electron microscope equipped with a preliminary exhaust chamber can transport a semiconductor wafer (sample) to be inspected next into the apparatus during measurement or inspection using an electron beam. More specifically, after the processing on the sample in the sample chamber is completed, the sample chamber in the sample chamber can be evacuated in the preliminary exhaust chamber while the processing such as measurement and inspection is performed in the sample chamber. Immediately, the next sample can be introduced (sample exchange) into the sample chamber.
- the electron microscope equipped with the preliminary exhaust chamber can achieve high throughput by performing the processing in the sample chamber and the preliminary exhaust together, but for that purpose, It is necessary to open the transfer port (opening) of the electron microscope device surrounding the sample transfer path.
- a shielding material such as a vacuum valve acts as a barrier against electromagnetic waves between the atmosphere side where the electromagnetic wave generation source is located and the sample chamber where the irradiation target of the electron beam exists. If the mouth is open, the barrier will disappear. In the process of transporting the sample, a barrier cannot be provided, and it is difficult to always cover the electron microscope apparatus with a shielding material without a gap.
- the periphery of the sample transfer port of the vacuum chamber and the conductive member of the sample transfer unit are connected by a conductive material.
- This conductive material is installed without interfering with the movement trajectory of the sample.
- FIG. 1 is an example of a configuration diagram of an electron microscope apparatus 100 for inspecting a semiconductor.
- the electron microscope apparatus 100 includes an electron microscope main body 101 that inspects a semiconductor wafer, a sample transfer unit 102 that transfers the semiconductor wafer to the electron microscope main body 101, and a wafer storage pod 103 that stores the semiconductor wafer.
- the electron microscope main body 101 is covered with a conductive material 105 such as iron or stainless steel, and has a transfer port 104 for transferring the semiconductor wafer to the electron microscope.
- the sample transport unit 102 is covered with a grounded conductive material 106 made of a conductive material such as iron or stainless steel.
- a vacuum chamber 107 (sample chamber) that is always in a vacuum state, and an electron gun 108 is installed above the vacuum chamber 107.
- the vacuum chamber 107 maintains a vacuum state with a vacuum chamber pump 109 and a vacuum chamber valve 110. Since the semiconductor wafer in the wafer storage pod 103 on the atmosphere side cannot be directly transferred into the vacuum chamber 107, a vacuum control chamber 111 (preliminary exhaust) capable of creating an atmospheric state and a vacuum state is provided in the vacuum chamber 107. Room).
- the vacuum control chamber 111 uses a vacuum control chamber pump 112, a leak valve 113 for supplying nitrogen, and a vacuum control chamber valve 114 to create a vacuum state and an atmospheric pressure state.
- the pod door 115 of the sample transfer unit 102 is opened, and the transfer robot 116 takes out the semiconductor wafer from the wafer storage pod 103.
- the transfer robot 116 transfers the semiconductor wafer to the vacuum control chamber 111 via the transfer port 104.
- the electron microscope apparatus illustrated in FIG. 1 is provided with a control device (not shown), which includes an electron gun 108 (electron microscope body), a vacuum chamber pump 109, a vacuum chamber valve 110, a vacuum control chamber 112, The leak valve 113, the vacuum control chamber valve 114, the pod door 115, and the transfer robot 116 are controlled according to predetermined conditions.
- the control device opens the vacuum control chamber valve 114, takes out the wafer from the wafer storage pod 103 by the transfer robot 116, loads the wafer into the vacuum control chamber 111 by the transfer robot 116, closes the vacuum control chamber valve 114, and controls the vacuum.
- Vacuum pumping by the chamber pump 112 opening of the vacuum chamber valve 110, loading of a wafer into the vacuum chamber 107 by a robot (not shown) (replacement of the wafer if a wafer exists in the vacuum chamber 107), closing of the vacuum chamber valve 110 Then, the measurement process is sequentially performed by controlling the electron microscope body and the sample stage (not shown). After the measurement is completed, the above process is followed in reverse to house the wafer in the wafer storage pod 103.
- the conveyance path is secured by opening the vacuum control chamber valve 114.
- the control is performed so that the wafer is introduced, exchanged, or recovered by the transfer robot 116.
- the electromagnetic field 117 from the outside flows into the electron microscope main body 101 at the transfer port 104, the electron gun This affects the electron beam emitted from 108.
- the conductive material 118 connects the peripheral edge of the opening of the vacuum control chamber 111 and the conductive material 106 of the sample transport unit.
- the vacuum control chamber 111, the conductive material 105 of the electron microscope main body, and the conductive material 106 of the sample transport unit need to be grounded.
- the conductive material 106 is described as an example of the conductive member provided on the atmosphere side of the vacuum control chamber 111.
- the present invention is not limited to this, and for example, the transfer robot 116, the vacuum control chamber 111, Alternatively, another grounded conductive member may be provided, and the conductive material 118 may be connected to the conductive member.
- FIG. 2 is an example of connection of the conductive material 118 in the electron microscope apparatus 100.
- conductive tape 201 having a width of 50 mm is connected as six conductive materials.
- the dimension of the interval between the conductive tapes 201 is important.
- 202 in FIG. 2 is the distance between the conductive tapes.
- the dimension obtained by adding 203 and 204 in FIG. 2 can be regarded as the distance between the conductive tapes.
- the wavelength of the 200 MHz electromagnetic field is 1.5 m.
- the interval between the conductive tapes is set so that at least the interval between the conductive tapes is 1 ⁇ 4 wavelength or less, that is, 0.375 m or less. It is more desirable that the interval is 1/10 wavelength or less of the wavelength of the electromagnetic field to be reduced.
- strip-shaped conductive material As described above, by installing strip-shaped conductive material at appropriate intervals so as to surround the opening of the vacuum chamber, it is possible to allow external electromagnetic waves to enter the sample chamber without directly shielding the opening of the vacuum chamber. Can be suppressed.
- a wide single conductive tape may be used and connected.
- the sample transport unit 102 is a mini-environment system, it is necessary to use a conductive tape having a plurality of holes or a mesh-like conductive tape. .
- a down flow with high cleanliness flows through the mini-environment type sample transport section by means of a filter and a fan.
- the conductive material 106 and the vacuum control chamber 111 of the mini-environment sample transport unit are sealed with a single conductive tape, convection is generated in the vicinity of the opening 104 due to the downflow from the transport port 104, and foreign matter floats. To do. If the foreign matter adheres to the fine pattern on the semiconductor wafer while the semiconductor wafer is being conveyed, problems such as disconnection occur.
- a conductive tape having a plurality of holes or a mesh-shaped conductive tape is used.
- the circumferential length of the hole or the outer circumferential length of the opening of the mesh is set to a quarter wavelength or less of the electromagnetic wave to be reduced. If possible, 1/10 wavelength or less is more desirable.
- the conductive tape illustrated in FIG. 2 is provided on each of the four sides of the vacuum chamber constituting the opening (sample transport port) of the vacuum chamber. That is, a plurality of conductive tapes are provided so as to surround the sample conveyance path of the vacuum chamber. As described above, there is an appropriate tape interval according to the frequency of the electromagnetic wave to be reduced. However, an apparatus for measuring a semiconductor wafer needs an opening corresponding to the diameter of the semiconductor wafer, which is expected to increase in size in the future. In addition, since there is also a size for securing a passing track of a transport mechanism for transporting a semiconductor wafer, it is desirable to reduce the interval between the tapes by providing at least one tape on each of at least four sides.
- the conductive member described in the above embodiment can suppress the influence of electromagnetic waves on the electron beam.
- the measurement reproducibility is further improved. It can also contribute to improvement.
- a vacuum valve provided on the atmosphere side of the preliminary exhaust chamber may be open or closed. That is, the influence of the electromagnetic wave may change between when the valve is opened and when the valve is closed, and the presence of the electromagnetic wave may cause a decrease in measurement reproducibility.
- FIG. 3 is an example of a configuration diagram of the electron microscope apparatus 300.
- the description of the components having the same functions as those already described with reference to FIG. 1 is omitted.
- the electron microscope main body 101 is covered with a shielding material 301 such as aluminum or permalloy in order to reduce the influence of the electromagnetic field.
- the shielding material 301 has a transfer port 104 for transferring a semiconductor wafer.
- the conductive material 118 is connected to the shield 301.
- the conveyance port 104 since the conveyance port 104 is large, the longitudinal dimension of the conductive material 118 exceeds 100 mm. In this case, the inflow of the electromagnetic field can be reduced by connecting the adjacent conductive materials 118 with another conductive material.
- FIG. 4 is an example of connection of the conductive material 118 in the electron microscope apparatus 300.
- a conductive tape 401 having a width of 50 mm is used as the conductive material.
- the conductive tape 401 connects the vacuum control chamber 111 and the shield 301.
- Adjacent conductive tapes 401 are connected by a conductive tape 402.
- the outer peripheral lengths of the mesh-like gaps 403 and 404 surrounded by the shield 301, the vacuum control chamber 111, and the conductive tapes 401 and 402 are set to 1 ⁇ 4 wavelength or less of the wavelength of the electromagnetic field to be reduced. Connecting. If possible, further effects can be expected if the wavelength is 1/10 or less.
- the number of the conductive tapes may be further increased to adjust the outer peripheral lengths of the mesh-like gaps 403 and 404 by the conductive tape.
- the outer peripheral lengths of the mesh-like gaps formed by the conductive tape are set to different outer peripheral lengths. This is to prevent resonance due to electromagnetic waves having the same frequency and reduce the influence on the electron microscope.
- Electron microscope apparatus 101 Electron microscope main body 102 Sample conveyance part 103 Wafer storage pod 104 Conveyance port 105 Conductive material 106 of an electron microscope main body 107 Conductive material 107 of a sample conveyance part Vacuum chamber 108 Electron gun 109 Vacuum chamber pump 110 Vacuum chamber valve 111 Vacuum control Chamber 112 Vacuum control chamber pump 113 Leak valve 114 Vacuum control chamber valve 115 Pod door 116 Transfer robot 117 Electromagnetic field 118 Conductive material 201 Conductive tape 202 Conductive tape interval 203 Conductive tape interval 204 Conductive tape interval 300 Electron microscope apparatus 301 Electron microscope main body shielding material 401 Conductive tape 402 Conductive tape 403 Gap due to conductive tape 404 Gap due to conductive tape
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Abstract
Description
101 電子顕微鏡本体
102 試料搬送部
103 ウェハー格納ポッド
104 搬送口
105 電子顕微鏡本体の導電材
106 試料搬送部の導電材
107 真空チャンバ
108 電子銃
109 真空チャンバポンプ
110 真空チャンババルブ
111 真空制御チャンバ
112 真空制御チャンバポンプ
113 リークバルブ
114 真空制御チャンババルブ
115 ポッドドア
116 搬送ロボット
117 電磁場
118 導電材
201 導電性テープ
202 導電性テープの間隔
203 導電性テープの間隔
204 導電性テープの間隔
300 電子顕微鏡装置
301 電子顕微鏡本体の遮蔽材
401 導電性テープ
402 導電性テープ
403 導電性テープによる隙間
404 導電性テープによる隙間
Claims (11)
- 真空チャンバを備えた荷電粒子線装置において、前記真空チャンバは試料搬送経路を包囲する開口部を有し、前記真空チャンバと、大気側に配置された導電部材間を導通すると共に、前記開口部を包囲する導電材を備えたことを特徴とする荷電粒子線装置。
- 請求項1において、
前記真空チャンバは予備排気室であることを特徴とする荷電粒子線装置。 - 請求項2において、
前記予備排気室は、当該予備排気室内空間と前記大気との間の空間を遮断する真空バルブを有し、前記荷電粒子線装置の試料室内に試料が位置する間に、当該真空バルブを開放、及び/又は閉鎖する制御装置を備えたことを特徴とする荷電粒子線装置。 - 請求項1において、
前記導電材は、複数の帯状の導電性テープであって、前記真空チャンバの大気側の開口を形成する4つの辺ごとに設けられることを特徴とする荷電粒子線装置。 - 請求項4において、
前記複数の導電性テープ間の間隔は、遮蔽する電磁波の周波数帯に応じて設定されることを特徴とする荷電粒子線装置。 - 請求項1において、
前記導電体は、複数の開口が設けられたシート、或いはメッシュであることを特徴とする荷電粒子線装置。 - 請求項6において、
前記複数の開口は、遮蔽する電磁波の周波数帯域に応じて設定されることを特徴とする荷電粒子線装置。 - 請求項6において、
前記メッシュの開口部の外周部長さは、遮断する電磁波の周波数帯域に応じて設定されることを特徴とする荷電粒子線装置。 - 真空チャンバを備えた荷電粒子線装置において、前記真空チャンバは試料搬送経路を包囲する開口部を有し、前記真空チャンバと、大気側に配置された導電部材との間は、複数の開口が設けられた導電性シート、導電性メッシュ、或いは複数の導電性テープによって接続されることを特徴とする荷電粒子線装置。
- 請求項9において、
前記真空チャンバは予備排気室であることを特徴とする荷電粒子線装置。 - 請求項10において、
前記予備排気室は、当該予備排気室内空間と前記大気との間の空間を遮断する真空バルブを有し、前記荷電粒子線装置の試料室内に試料が位置する間に、当該真空バルブを開放、及び/又は閉鎖する制御装置を備えたことを特徴とする荷電粒子線装置。
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US14/893,669 US10290522B2 (en) | 2013-05-30 | 2014-03-19 | Conductive interface system between vacuum chambers in a charged particle beam device |
KR1020157033515A KR101800105B1 (ko) | 2013-05-30 | 2014-03-19 | 하전 입자선 장치 |
JP2015519707A JP6117352B2 (ja) | 2013-05-30 | 2014-03-19 | 荷電粒子線装置 |
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JP (1) | JP6117352B2 (ja) |
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US11906605B1 (en) * | 2020-10-30 | 2024-02-20 | The United States Of America, As Represented By The Secretary Of The Navy | Apparatus, systems, and methods for measurement using magneto-optical Kerr effect |
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JPH11186779A (ja) * | 1997-12-22 | 1999-07-09 | Nec Corp | 磁気シールドルーム |
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US20160133433A1 (en) | 2016-05-12 |
KR20160003079A (ko) | 2016-01-08 |
US10290522B2 (en) | 2019-05-14 |
JP6117352B2 (ja) | 2017-04-19 |
KR101800105B1 (ko) | 2017-11-21 |
JPWO2014192379A1 (ja) | 2017-02-23 |
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