WO2004094105A1 - 真空吸着保持装置及び保持方法と、該保持装置を用いた研磨装置及びこの研磨装置を用いたデバイス製造方法 - Google Patents
真空吸着保持装置及び保持方法と、該保持装置を用いた研磨装置及びこの研磨装置を用いたデバイス製造方法 Download PDFInfo
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- WO2004094105A1 WO2004094105A1 PCT/JP2004/005535 JP2004005535W WO2004094105A1 WO 2004094105 A1 WO2004094105 A1 WO 2004094105A1 JP 2004005535 W JP2004005535 W JP 2004005535W WO 2004094105 A1 WO2004094105 A1 WO 2004094105A1
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- Prior art keywords
- polishing
- pressure
- vacuum
- holding
- polished
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
- B24B37/30—Work carriers for single side lapping of plane surfaces
Definitions
- Patent application title Vacuum suction holding device and holding method, polishing device using the holding device, and device manufacturing method using the polishing device
- the present invention relates to a holding device and a holding method for holding a polishing body on a mounting surface of the polishing body by vacuum suction.
- the present invention also relates to a polishing apparatus using such a holding device. Further, the present invention relates to a device manufacturing method using such a polishing apparatus.
- the polishing tool is configured by attaching a polishing pad that comes into direct contact with an object to be polished (for example, a semiconductor wafer) to a polishing head that is a holding member of the polishing pad.
- the polishing pad is attached to the pad mounting surface of the polishing head with an adhesive or adhesive tape, but the polishing pad should be attached to a plate-like member that can be attached to and detached from the polishing head by vacuum suction. It is known that the polishing pad can be replaced together with the plate-shaped member. With such a polishing tool, the polishing pad can be replaced by attaching and detaching the plate-shaped member using vacuum suction to the polishing head instead of removing and attaching the troublesome polishing pad. Therefore, the efficiency of the polishing operation can be improved.
- the configuration for holding an object by vacuum suction in this manner is also applied to a mechanism for holding an object to be polished on a surface plate (for example, refer to Japanese Patent Application Laid-Open No. 11-41838). .
- the plate-like member having the polishing pad attached thereto (hereinafter, the plate-like member having the polishing pad attached thereto is referred to as an abrasive body) is retained.
- a polishing tool of a type that is attached to and detached from a polishing body mounting surface (hereinafter referred to as a mounting surface) of a polishing head, which is a holding member, by vacuum suction the polishing body is polished before the polishing of the workpiece is started. It is necessary to detect whether or not it is held by suction. Conventionally, such a polishing body suction detection has been performed based on the pressure in the vacuum pipe measured by the pressure sensor provided in a vacuum pipe connecting the vacuum source and the polishing head. .
- the pressure in the vacuum pipe when the polishing body is not adsorbed to the polishing head is about -80 kPa, and the pressure in the vacuum pipe when the polishing body is adsorbed to the polishing head. If the pressure is known to be about 30 kPa, a threshold of 16 kPa is set, and the pressure in the vacuum line measured by the pressure sensor is set to this threshold. If the value exceeds the value (the degree of vacuum is lower than the threshold value), the abrasive body is not adsorbed by the polishing head, and the measured pressure in the vacuum pipe is below the threshold value ( When the degree of vacuum was higher than the threshold value), it was determined that the polishing body was adsorbed on the polishing head.
- the polishing body is adsorbed to the polishing head based on the pressure in the vacuum line measured by a pressure sensor provided in the vacuum line connecting the vacuum source and the polishing head.
- the vacuum pipe is branched, and when the vacuum pipe at the branched portion is connected to another vacuum suction device, the vacuum pipe is connected to the polishing tool. Since the vacuum suction power of the distributed vacuum source is weakened, the pressure in the vacuum line measured while the polishing body is being vacuum-sucked decreases and approaches the threshold, and the polishing head is attached to the polishing head. In some cases, it was difficult to identify the state in which the particles were held by suction. Disclosure of the invention
- the present invention has been made in view of such a problem, and a vacuum source It is an object of the present invention to provide a holding device and a holding method that can reliably detect whether or not a polishing body is suction-held by a holding member regardless of a change in the suction force. Another object of the present invention is to provide a polishing apparatus using such a holding device. Another object of the present invention is to provide a device manufacturing method using such a polishing apparatus.
- the holding device includes a holding member having a polishing body mounting surface, a vacuum source, and a mounting surface provided inside the holding member, one end of which is the mounting surface. And a vacuum line having the other end connected to the vacuum source and suctioning air through the vacuum line to suction-hold the polishing body on the mounting surface.
- a restrictor provided in a vacuum conduit, two pressure detecting means for detecting the pressure in the vacuum conduit at a position before and after the restrictor, and a pressure difference before and after the restrictor detected by the two pressure detecting means And determining means for determining whether or not the polishing body is suction-held by the holding member based on the above.
- the holding method of the invention according to claim 2 is a method of sucking and holding the abrasive body on a mounting surface provided on the holding member by sucking air through a vacuum pipe provided inside the holding member.
- a first step of detecting pressure in the vacuum pipe at a position before and after a throttle provided in the vacuum pipe, and a pressure difference before and after the throttle detected in the first step are detected.
- a polishing apparatus is a polishing apparatus, comprising: a platen for holding an object to be polished; And a polishing tool for polishing the object to be polished.
- the polishing apparatus according to claim 4 is the polishing apparatus according to claim 3, further comprising: a moving unit configured to relatively move the polishing tool and the surface plate; and the polishing tool. And a control means for controlling the moving means or the rotating means based on the determining means.
- a device manufacturing method includes a step of polishing the surface of the object to be polished by using the polishing apparatus according to the third or fourth aspect.
- FIG. 1 is a configuration diagram of a main part of a CMP device that is an embodiment of a holding device and a polishing device according to the present invention.
- FIG. 2 is a schematic configuration diagram of the whole CMP apparatus.
- FIG. 3 is a schematic configuration diagram of the holding device used in the embodiment of the present invention.
- FIG. 4 is a flowchart illustrating an example of the device manufacturing method according to the present invention.
- FIG. 5 is a chart showing a list of execution results of the first to sixth embodiments.
- FIG. 6 is a graph showing the relationship between the opening of the first throttle and the opening of the second throttle and the rotation speed of the knob in the first to sixth embodiments.
- FIG. 2 shows a CMP apparatus 1 to which the holding device according to the present invention is applied.
- the CMP apparatus 1 is an abbreviation for a chemical mechanical polishing apparatus, and is referred to as a CMP apparatus in this specification.
- the CMP apparatus 1 shown in the present embodiment corresponds to one embodiment of a polishing apparatus using the holding device according to the present invention. Is used to carry out the holding method according to the present invention.
- the CMP apparatus 1 has a surface plate 10 for holding a semiconductor wafer W to be polished in a horizontal posture, and faces a surface to be polished (an upper surface here) of the semiconductor wafer W held on the surface plate 10. And a polishing tool 20 having a polishing pad 34 attached to the surface to be polished.
- the platen 10 is attached to the upper end of a vertically extending rotating column 12 so that the platen 10 can be rotated in a horizontal plane by rotating the rotating column 12 about a vertical axis. It is now.
- a suction chuck mechanism (not shown) that opens to the upper surface side of the surface plate 10 is provided in the surface plate 10. By suctioning the lower surface side of the semiconductor wafer W to be polished by the suction chuck mechanism, The semiconductor wafer W can be fixedly held on the upper surface of the surface plate 10.
- the polishing tool 20 includes a plate-shaped polishing body 30 and a polishing head 40 having a mounting surface 42 a of the polishing body 30.
- the polishing body 30 is a plate-shaped plate member 3. 2 and the polishing pad 34 attached to the lower surface of the plate member 32.
- the polishing head 40 includes a cylindrical body portion 42 and a shaft portion 44 attached above the body portion 42 and extending vertically, and a plate member 3 is provided on the lower surface of the body portion 42.
- the mounting surface 42 a that is in contact with 2 is formed.
- a first conduit 46 having an opening on a mounting surface 42a is provided in the body portion 42 and the shaft portion 44 of the polishing head 40. .
- the first pipe 46 is connected to a second pipe 48 connected to a vacuum source 60 provided outside the polishing tool 20.
- the lower surface 32a of the plate member 32 is accurately flattened, and the polishing pad 34 can be mounted in a flat state.
- the polishing pad 34 is made of a nonwoven fabric, a resin or the like as a raw material, and is formed into a thin disk shape having substantially the same diameter as the plate member 32. Since the polishing pad 34 is a consumable item, it is necessary to use an adhesive or double-sided It is detachably attached to the lower surface of the plate member 32 by a loop or the like.
- the shaft portion 44 that constitutes the polishing head 40 has a configuration that can be moved by a plurality of motors (not shown). It can rotate around the central axis (vertical axis).
- a semiconductor wafer W to be polished is adsorbed on the upper surface of the surface plate 10.
- the semiconductor wafer W is held on the surface plate 10 such that the surface to be polished faces upward.
- the semiconductor wafer W is set so that its center coincides with the rotation center of the platen 10.
- the surface plate 10 is rotated together with the semiconductor wafer W in a horizontal plane.
- the above-mentioned mode is operated to rotate the shaft portion 44 of the polishing head 40 around the axis, thereby rotating the entire polishing tool 20 (this causes the polishing pad 34 to rotate in a horizontal plane).
- the entire polishing tool 20 is lowered, and the polishing pad 34 is brought into contact with the surface to be polished of the semiconductor wafer W from above.
- the polishing pad 34 comes into contact with the surface to be polished of the semiconductor wafer W and polishing of the semiconductor wafer W starts, the entire polishing tool 20 is moved in a direction parallel to the contact surface between the semiconductor wafer W and the polishing pad 34 ( That is, the entire surface to be polished is polished by swinging movement (in a horizontal direction).
- a polishing liquid (slurry) is supplied onto a surface to be polished of the semiconductor wafer W from a polishing liquid supply device (not shown).
- a polishing liquid supply device not shown.
- the polishing surface of the semiconductor wafer W held on the platen 10 receives the polishing liquid while the rotational motion of the semiconductor wafer W itself indicated by an arrow in FIG.
- the entirety is polished by the rotation and the swinging motion (that is, of the polishing pad 34), and the polished surface of the semiconductor wafer W is flattened with high precision.
- the polishing pad 34 is a consumable item, it is necessary to replace the polishing pad 34 after a certain amount of polishing has been performed.
- this CMP system 1 When replacing the polishing pad 34 as described above, a plurality of plate members 32 (that is, the polishing bodies 30) to which the polishing pad 34 is attached are prepared in advance, and the polishing pad 3 After the abrasive body 30 having worn down 4 is detached from the polishing head 40, the abrasive body 30 with the new polishing pad 34 attached thereto is sucked and held by the polishing head 40. Then, the adsorption of the new polishing body 30 to the polishing head 40 is performed by the air from the vacuum source 60 via the vacuum pipe 50 composed of the first pipe 46 and the second pipe 48. This is performed by suction.
- the holding device provided in the CMP apparatus 1 includes a polishing head 40 as a holding member having a mounting surface 42 a of the polishing body 30, a vacuum source 60, and an inside of the polishing head 40. , One end of which is open on the mounting surface 42 a of the polishing head 40 and the other end is a vacuum pipe 50 connected to a vacuum source 60, and the polishing body 30 is held by suction.
- the aperture 52 may be either an orifice or a choke. However, the aperture area (opening area) can be changed according to various conditions such as the length and inner diameter of the vacuum pipe 50 incorporated in the CMP apparatus 1. It is preferable that the stop is an aperture.
- the holding device according to the present invention incorporated in the CMP apparatus 1 determines whether or not the polishing body 30 is attached to the polishing head 40 by determining whether or not the polishing body 30 is mounted on the vacuum line near the vacuum source 60. Irrespective of the pressure inside 50 (absolute pressure), the vacuum line 50 is branched because it is based solely on the pressure difference between the throttle 52 and the other vacuum line. Even if a vacuum device is provided and the vacuum suction force of the vacuum source 60 fluctuates, it is necessary to reliably determine whether or not the polishing body 30 is mounted on the polishing head 40. It is possible to do.
- the holding method according to the present invention includes: a first step of detecting a pressure in the vacuum pipe 50 at a position before and after the throttle 52 provided in the vacuum pipe 50; And a second step of determining whether or not the abrasive body 30 is suction-held on the holding member based on the pressure difference between before and after the restrictor 52 detected in the above step.
- the determination as to whether or not the abrasive body 30 is attached to the vacuum source is based solely on the pressure difference around the throttle 52, regardless of the pressure (absolute pressure) in the vacuum line 50 near the vacuum source 60. Therefore, the same effect as the above-described holding device according to the present invention can be obtained.
- the pressure in the vacuum conduit 50 has a fixed relationship with the fluid (air) flow rate (Perneuy's theorem)
- the pressure around the throttle 52 may be determined from the fluid flow rate.
- the aperture ratio (cross-sectional area ratio of the pipe) m can be expressed by the following equation (1).
- the outflow coefficient C of the constriction can be expressed by the following equation (2).
- the flow velocity V of the fluid passing through the restriction can be expressed by the following equation (3)
- the average flow velocity U in the pipe at this time can be expressed by the following equation (4).
- the CMP apparatus 1 having the above-described configuration includes a platen 10 for holding a semiconductor wafer W to be polished, and a holding body 30 for holding the polishing body 30 by suction.
- a rotating means comprising the above-described motor rotating about a central axis of the head, and the moving means or rotating means Control means for controlling the driving state of the means.
- the present CMP apparatus 1 can perform a polishing operation in a state where the polishing body 30 is securely attached (adsorbed and held) to the polishing head 40 as a holding member.
- the present CMP apparatus uses, for example, a method for determining that the polishing body 30 is not adsorbed to the polishing head 40 for some reason during polishing. Sends information on the presence / absence of adsorption of the abrasive body to the control means. In response to the information, the control means was able to control each moving means and rotating means.
- the number of rotations of the rotating means was reduced, the moving means was controlled so as to reduce the pressing force at the time of polishing, or the polishing head was able to retreat from the workpiece.
- the determination means and the control means may be achieved by the same member.
- FIG. 4 is a flowchart showing the manufacturing process of the semiconductor device.
- step S201 is an oxidation step of oxidizing the surface of the wafer.
- step S202 is a CVD process for forming an insulating film or a dielectric film on the wafer surface by CVD or the like.
- step S203 is an electrode forming step of forming electrodes on the wafer by vapor deposition or the like.
- Step S204 is an ion implantation step of implanting ions into the wafer.
- Step S205 is a CMP process.
- the polishing apparatus according to the present invention is used to planarize the interlayer insulating film and to remove the semiconductor device. The polishing of the metal film on the surface of the substrate and the formation of damascene by polishing the dielectric film are performed.
- Step S206 is a photolithography step. In this step, a resist is applied to the wafer, a circuit pattern is printed on the wafer by exposure using an exposure apparatus, and the exposed wafer is developed. Further, the next step S207 is an etching step for removing portions other than the developed resist image by etching, and thereafter, removing the unnecessary resist after the resist is peeled off and etched.
- step S208 it is determined in step S208 whether all necessary steps have been completed. If not, the process returns to step S200, and the previous steps are repeated to form a circuit pattern on the wafer. If it is determined in step S208 that all the processes have been completed, the process ends.
- the device manufacturing method according to the present invention includes the step of polishing the surface of the semiconductor wafer W using the polishing apparatus according to the present invention in the CMP step, the throughput of the polishing step (CMP step) is improved. .
- a device here, a semiconductor device
- the polishing apparatus according to the present invention may be used in the CMP step of a semiconductor device manufacturing process other than the above-described semiconductor device manufacturing process.
- a semiconductor device manufactured by the semiconductor device manufacturing method according to the present invention is manufactured at a high throughput, so that a low-cost semiconductor device is obtained.
- the device manufacturing method according to the present invention it is a matter of course that devices other than semiconductor devices can be manufactured at low cost by using an object to be polished other than a semiconductor wafer, for example, a liquid crystal substrate.
- the restrictor and two pressure detecting means (first pressure sensor 54 and second pressure sensor 56) provided before and after the restrictor are provided outside the polishing tool 20.
- the throttle 52 and the first and second pressure sensors 54, 56 are provided in the vacuum line 50 (that is, in the second line 48). It may be provided in the vacuum pipe 50 provided inside (that is, in the first pipe 46).
- the holding device according to the present invention is applied to the CMP device, and the polishing device according to the present invention is a CMP device.
- the apparatus may be applied to a polishing apparatus having another configuration, and the polishing apparatus according to the present invention may be an apparatus other than the CMP apparatus.
- FIG. 3 shows a device for confirming that the holding device provided in the above-described CMP device 1 exerts a sufficient effect.
- an opening in the vacuum conduit 50 is provided.
- a second restrictor ⁇ 2 which is a variable restrictor having a variable area, is provided to provide various resistances in the vacuum conduit 50 (for example, dust attached to the opening of the vacuum conduit 50 on the mounting surface 42a of the polishing body 30). Etc.) can be simulated.
- the above-described aperture 52 is a variable aperture, and in this embodiment, this is referred to as a first aperture (the symbol remains 52).
- this apparatus has a first pressure measuring device (digital pressure gauge) for measuring the pressure in a vacuum pipe 50 close to the vacuum source 60 (a portion corresponding to the second pipe 48 in the above-described embodiment). 74 and a second pressure measuring device (digital) for measuring the pressure in the vacuum line 50 (the portion corresponding to the first line 46 in the above embodiment) close to the mounting surface 42 a of the polishing body 30. Pressure gauge) 76.
- the first pressure sensor 54 and the second pressure sensor 56 have their measured pressures It is indicated by a voltage value (unit: volt: V).
- PA 40-102 V-PAM output voltage range and 0 V to 5 V).
- PPA101 manufactured by SMC was used for the first and second pressure measuring devices 74 and 76.
- the table shown in Fig. 5 shows the results of the first to sixth examples performed using the above-mentioned apparatus. Things.
- the “first throttle opening” refers to the opening of the first throttle 52
- the “second throttle opening” refers to the opening of the second throttle 72.
- the first opening and the second opening are knobs for the opening area (the first opening 52 and the second opening 72 and the knob for adjusting the opening area). (Both not shown) are represented by the number of rotations (hereinafter referred to as the number of rotations), and the relationship between the number of rotations of the knob and the opening area is as shown in FIG.
- the first throttle opening and the second throttle opening reach the fully opened state (opening area of about 1.5 mm 2 ) when the rotation speed of the knob becomes 8 or more, and when the rotation speed is less than 8, Has an opening area corresponding to the rotation speed of the knob in Fig. 6 (Fig. 6 also shows the relationship between the opening area and the flow rate of air).
- “Voltage 1” is a voltage value output from the first pressure sensor 54
- “Voltage 2” is a voltage value output from the second pressure sensor 56.
- the “voltage difference” is a value obtained by subtracting the voltage value output by the second pressure sensor 56 from the voltage value output by the first pressure sensor 54 (both are in volts: V).
- the state in which the polishing body 30 is attached to the polishing head 40 is simulated by opening the opening 50a of the vacuum pipe 50, and the polishing is performed.
- the body 30 is attached to the polishing head 40 (adsorbed state) by closing the opening 50a of the vacuum pipe 50 with a finger. I simulated.
- the pressure in the vacuum line 50 detected by the first and second pressure sensors 52, 54 (however, the voltage directly output is a voltage) corrects the pressure before and after the restrictor 52, respectively. Confirmation of whether it was shown was also performed. That is, the pressure in the vacuum line 50 detected by the first pressure sensor 54 becomes substantially equal to the pressure measured by the first pressure gauge 74, and the vacuum line 5 detected by the second pressure sensor 56 It was confirmed that the pressure in 0 was almost equal to the pressure measured by the second pressure measuring device 76.
- the “first pressure” shown in the results of the first embodiment in FIG. 5 indicates the pressure value in the vacuum pipe 50 measured by the first pressure measuring device 74, and the “second pressure” indicates the second pressure. It shows the pressure value in the vacuum line 50 measured by the measuring instrument 76 (both in KPa).
- the voltage value indicated by the first pressure sensor 54 before the attraction of the abrasive body 30 was 4.450 V, and the voltage value indicated by the second pressure sensor 56 was 3.700 V. Further, the voltage value indicated by the first pressure sensor 54 after adsorption of the abrasive body 30 was 4.510 V, and the voltage value indicated by the second pressure sensor 56 was 4.530 V. From this, the pressure before and after the restrictor 52 before the adsorption of the abrasive body 30 is calculated at the position of the first pressure sensor 54 by the calculation using the above equation (2).
- the vacuum pipe 50 is branched, and another vacuum suction device is provided in the branched vacuum pipe, and the vacuum suction power of the vacuum source 60 fluctuates. It was proved that even in the case where it was possible to judge whether or not the polishing body 30 was attached to the polishing head 40, it was possible to reliably perform the judgment.
- the holding device or the holding method of the present invention it is possible to reliably determine whether or not the polishing body is mounted on the polishing head regardless of the fluctuation of the vacuum suction force of the vacuum source. It is possible to do.
- the polishing apparatus of the present invention since the mounting (adsorption and holding) of the polishing body was insufficient, the polishing body was detached from the polishing head during polishing, and not only the polishing body but also the polishing apparatus was damaged. It is possible to prevent such a situation from occurring. Further, according to the semiconductor device manufacturing method of the present invention, the yield is improved.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005505728A JP4505822B2 (ja) | 2003-04-24 | 2004-04-19 | 研磨装置、研磨方法及び研磨装置を用いたデバイス製造方法 |
US11/252,615 US7175504B2 (en) | 2003-04-24 | 2005-10-19 | Vacuum suction holding apparatus and holding method, polishing apparatus using this holding apparatus, and device manufacturing method using this polishing apparatus |
Applications Claiming Priority (2)
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JP2003120469 | 2003-04-24 | ||
JP2003-120469 | 2003-04-24 |
Related Child Applications (1)
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US11/252,615 Continuation US7175504B2 (en) | 2003-04-24 | 2005-10-19 | Vacuum suction holding apparatus and holding method, polishing apparatus using this holding apparatus, and device manufacturing method using this polishing apparatus |
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WO2004094105A1 true WO2004094105A1 (ja) | 2004-11-04 |
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US (1) | US7175504B2 (ja) |
JP (1) | JP4505822B2 (ja) |
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WO (1) | WO2004094105A1 (ja) |
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Cited By (8)
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JP2009178800A (ja) * | 2008-01-30 | 2009-08-13 | Ebara Corp | 研磨方法及び研磨装置 |
US8430716B2 (en) | 2008-01-30 | 2013-04-30 | Ebara Corporation | Polishing method and polishing apparatus |
JP2010212598A (ja) * | 2009-03-12 | 2010-09-24 | Tokyo Electron Ltd | 処理液供給機構、処理液供給方法、液処理装置、および記憶媒体 |
CN105058225A (zh) * | 2015-07-07 | 2015-11-18 | 武汉新芯集成电路制造有限公司 | 研磨垫固定装置及化学机械研磨装置 |
JP2020519444A (ja) * | 2017-04-10 | 2020-07-02 | カマックス ホールディング ゲーエムベーハー アンド コーポレイテッド ケージーKAMAX Holding GmbH & Co.KG | 浮動装着されたマルチピース圧延工具および圧延機 |
US11376651B2 (en) | 2017-04-10 | 2022-07-05 | Kamax Holding Gmbh & Co. Kg | Floatingly mounted multi-piece rolling tool, and rolling machine |
CN110774164A (zh) * | 2018-07-31 | 2020-02-11 | 台湾积体电路制造股份有限公司 | 化学机械平坦化系统以及方法 |
CN110774164B (zh) * | 2018-07-31 | 2021-10-15 | 台湾积体电路制造股份有限公司 | 化学机械平坦化系统以及方法 |
Also Published As
Publication number | Publication date |
---|---|
TWI337766B (ja) | 2011-02-21 |
US7175504B2 (en) | 2007-02-13 |
TW200507155A (en) | 2005-02-16 |
JP4505822B2 (ja) | 2010-07-21 |
US20060052037A1 (en) | 2006-03-09 |
JPWO2004094105A1 (ja) | 2006-07-13 |
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