WO2002005337A1 - Tranche a chanfreinage en miroir, tissu a polir pour chanfreinage en miroir, machine a polir pour chanfreinage en miroir et procede associe - Google Patents
Tranche a chanfreinage en miroir, tissu a polir pour chanfreinage en miroir, machine a polir pour chanfreinage en miroir et procede associe Download PDFInfo
- Publication number
- WO2002005337A1 WO2002005337A1 PCT/JP2001/005888 JP0105888W WO0205337A1 WO 2002005337 A1 WO2002005337 A1 WO 2002005337A1 JP 0105888 W JP0105888 W JP 0105888W WO 0205337 A1 WO0205337 A1 WO 0205337A1
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- polishing
- mirror
- polishing cloth
- wafer
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
- H01L21/0201—Specific process step
- H01L21/02021—Edge treatment, chamfering
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- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/065—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of thin, brittle parts, e.g. semiconductors, wafers
Definitions
- the present invention relates to a mirror-polished wafer with reduced outer peripheral sag, a polishing cloth for mirror-polished, a mirror-polished polishing apparatus and a method.
- Conventional technology a mirror-polished wafer with reduced outer peripheral sag, a polishing cloth for mirror-polished, a mirror-polished polishing apparatus and a method.
- a silicon wafer processing method includes a slicing step of cutting (slicing) a cylindrical semiconductor ingot into a thin plate with a wire saw or a circular inner peripheral blade to obtain a wafer.
- a chamfering process to remove the corners of the periphery of the wafer to prevent chipping around the wafer obtained by slicing, and polishing both sides to adjust the thickness and flatness of the chamfered wafer A rubbing step, an etching step in which the wafer is immersed in an etching solution to remove the processing strain of the wrapped wafer, and etching is performed on the entire surface; And a polishing step of mirror-polishing one or both surfaces to improve the performance.
- the above-mentioned chamfered chamfered portion of the aerial ⁇ Mirror polishing is usually performed before polishing the wafer.
- This mirror chamfering is performed by a known mirror chamfering polishing apparatus 10 as shown in FIGS. 12 (a) and 12 (b) (see Japanese Patent Application Laid-Open No. 11-188590).
- the polishing apparatus 10 has a rotating drum 12, and the rotating drum 12 is structured to rotate at high speed about a rotating shaft 14.
- a multi-layer or single-layer polishing cloth (polishing pad) 16 A (FIG. 12 (a)) or 16 B (12 (b)) is attached to the entire outer peripheral surface of the rotating drum 12. Has been done.
- Reference numeral 18 denotes a wafer rotating device which is provided corresponding to the rotating drum 12 and which can freely change the inclination angle with respect to the rotating drum 12.
- the wafer rotating device 18 has a base 20 and a rotating shaft 22 rotatably provided on the upper surface of the base 20.
- the wafer W is held at the upper end of the rotating shaft 22 and its mirror chamfering is performed.
- Reference numeral 24 denotes a nozzle which supplies a polishing liquid 26 to a contact portion between the wafer W and the polishing cloth 16.
- Mirror chamfering involves rotating both the rotating drum 12 and the wafer A and rotating the polishing cloth 16 of the rotating drum 12 with the wafer A at a predetermined angle, for example, 40 ° to 55 ° with respect to the polishing surface of the rotating drum. This is performed by pressing the wafer in a state where it is inclined at an angle of ° and polishing the chamfered portion of the wafer.
- the polishing cloths (polishing pads) 16 A and 16 B are, as the prior art, single-layer polishing cloths (polishing pads) 16 B (FIG. 12 (b)).
- a two-layer abrasive cloth (polishing pad) 16 A that is, a sheet 16 made of at least one of synthetic resin foam, nonwoven fabric, resin-processed nonwoven fabric, synthetic leather or a composite of these.
- a and an elastic sheet 16b for example, a multilayer structure composed of a synthetic rubber and a sponge sheet (FIG. 12 (a)) is disclosed.
- a soft polishing cloth for example, Suba400: thickness 1.27 mm
- Ascar C hardness 61 Comparative example of the above publication, Suba 400: Thickness 127 mm + synthetic rubber: Thickness 1 mm: Rubber hardness 50: Examples 1 and Suba 4 of the above publication 0 0: Thickness 1.27 mm + sponge sheet: A technique using Example 2) of the above publication is disclosed.
- the polished portion 32 extends more than 500 m from the wafer chamfered portion 30. ⁇ ⁇ It turned out that it got into the eha side.
- this extra polishing is referred to as overpolishing
- the width of the polished portion 32 is referred to as overpolishing width.
- the width of the chamfered portion 30 is usually about 500 ⁇ m.
- the sum of the chamfered portion of the wafer (30) (approximately 500 jum) and the over polish width 32 (approximately 500 ⁇ m) is approximately 100 / xm, that is, approximately lmm.
- the measurement exclusion range (Edge Exclusion: EE) of the flatness of the wafer surface is currently 3 mm from the periphery of the wafer, and the over polish width is about 500 ⁇ m. If it is m, the effect on e-ah flatness (flatness) is small.
- EE exclusion range
- the thickness tends to decrease from a position approximately 5 mm from the outer edge of the wafer to the chamfered portion.
- Cause of sagging This may be due to the difference in polishing pressure when polishing the wafer main surface or the effect of abrasives, etc.
- the sag at the boundary between the chamfered portion and the main surface may be affected by the mirror chamfering.
- the present inventors have conducted intensive studies to improve the above-mentioned conventional mirror chamfering technology, and have been able to suppress the sag around the e-aperture even when the e-flat flatness measurement exclusion range (E.E.) is 1 mm. Of a range of over polish widths that can achieve good wafer flatness and a mirror surface chamfer with this new over polish width Thus, the present invention has been completed by obtaining new findings.
- E.E. e-flat flatness measurement exclusion range
- the present invention provides a novel mirror-faced chamfer preventing an outer peripheral sag of the wafer, a mirror-faced polishing cloth for efficiently and efficiently producing the new mirror-faced chamfer, and a mirror face-polishing polishing hole. It is another object of the present invention to provide a mirror chamfering apparatus and method suitably used for mirror chamfering of the novel mirror chamfer.
- the mirror-chamfered wafer of the present invention has an overpolishing width of 400 ⁇ m or less due to mirror-chamfering.
- the overpolishing width By setting the overpolishing width to about 0 to 400 / zm in the wafer whose mirror surface is chamfered in this way, the polishing is performed by subsequent polishing.
- the width of the c-over poly Mesh flatness of wafer surface can be obtained with high flatness of Ueha to near the outer periphery is eliminated completely state (zero) is preferable, chamfered portion completely, including the variation in the pressure E conditions
- a mirror-polished surface with an over polish width of about 50 ⁇ m is recommended.
- the over polish width should be 50 ⁇ m to 200 m.
- a method of manufacturing a Ueha of the present invention are various methods are conceivable, particularly preferred manufacturing apparatus and method is as follows.
- a rotating drum having a polishing cloth adhered to the surface thereof; and an ⁇ a rotating device for holding and rotating the ⁇ a, wherein the rotating ⁇ a is brought into contact with the polishing cloth at a predetermined angle and a polishing liquid is applied to the contact portion.
- a polishing cloth for mirror chamfering is used in which the hardness of the portion (polishing cloth layer) of the polishing cross that contacts the wafer (polishing cloth layer) is 65 or more in Asker C hardness. It can be manufactured by The width of the over polish can be reduced by devising the polishing cross to be used, and a wafer having an over polish width of 400 ⁇ m or less can be stably manufactured.
- the polishing cloth for mirror chamfering of the present invention has a structure in which a polishing cloth layer and at least two sponge layers having a lower hardness than the polishing cloth layer are bonded to each other.
- the hardness is 65 or more and the hardness of the sponge layer is 40 or less in Asker C hardness.
- it is preferable that the thickness of the polishing cloth layer is 1.3 mm or less and the thickness of the sponge layer is 1.0 Omm or more.
- the polishing cloth may have a single-layer structure composed of only the polishing cloth layer, and the polishing cloth layer may have a hardness of Asker C hardness of 65 or more. In this case, the polishing cloth layer has a thickness of 1.3. mm or less is preferred.
- the polishing cloth having a Kerr C hardness of 65 or more. If the hardness of the polishing cloth layer in contact with the wafer is higher than that, the polishing can be performed with a single layer or a multi-layer polishing cloth.However, in the case of a single layer, since the polishing cloth is a hard polishing cloth, the polishing is performed with the wafer. The contact area in the outer circumferential direction of the cloth is small. Therefore, in order to mirror the entire chamfered portion of the outer peripheral portion of the wafer, it is necessary to rotate the wafer slowly, which takes a long processing time and lowers productivity. Therefore, in the case of a single layer, the upper limit is preferably 78 or less in Asker C hardness.
- this is a polishing cross structure in which the hardness of the polishing cloth layer is ASKER C hardness 65 or more and the hardness of the sponge layer is ASKER C hardness 40 or less, at least two layers are bonded, the direction of the center of the wafer
- the contact area in the outer peripheral direction between the wafer and the polishing cloth can be increased while the contact area with the polishing pad is kept small, that is, while the over polish width is controlled to 400 ⁇ m or less. This is preferable because the time required for the conversion can be reduced.
- the upper limit of the polishing cloth layer that can be used is increased.
- the hardness of the polishing cloth layer with an ASKER C hardness of 81 or more is also high enough to obtain a mirror surface free from scratches.
- Any polishing cloth can be used without particular limitation, and the overpolishing width can be remarkably reduced, and the productivity is good.
- the upper limit of the hardness of the polishing cloth layer but practically, it is sufficient to set the Asker C hardness to about 90.
- the lower limit of the hardness of the sponge layer practically, the lower limit may be about 10 in Asker C hardness.
- the contact length of the polishing cloth with the outer peripheral direction of the wafer becomes longer while the width of the over polish is suppressed, and the polishing efficiency is improved and productivity is improved. Get better.
- the thickness of the polishing cloth layer is too large, the effect of the sponge layer is reduced, so that the thickness is preferably 1.3 mm or less. If the thickness is less than 0.5 mm, the life of the polishing Since the frequency of replacement of the polishing cloth increases, it is preferable to set the thickness to about 1.3 mm to 0.7 mm. Also, the thickness of the sponge layer is preferably 1 mm or more.
- the thickness is less than 1 mm, the effect of increasing the contact area between the wafer and the outer peripheral portion of the polishing cloth is reduced. On the other hand, if it is too thick, it becomes difficult to attach the polishing cloth to the rotating drum, so that about 1 mm to 2 mm is preferable.
- the processing conditions when using a polishing cloth and an apparatus having an ASKER C hardness of 65 or more are such that the polishing load is 2 kgf or more and the inclination angle of the wafer to the polishing cloth is 40 ° to 55 °.
- the mirror surface chamfered wafer can be suitably manufactured in the range of °.
- the inclination angle of the wafer with respect to the polishing cloth means the angle between the wafer and the perpendicular to the polishing opening, and if the inclination angle is less than 40 °, the boundary between the chamfered part and the surface. If the temperature exceeds 55 °, the amount of overpolishing increases, and furthermore, the outermost periphery of the wafer becomes more likely to be uncut.
- polishing cloths Ascar C hardness of about 60
- Ascar C hardness of about 60
- this may result in non-mirror-finished parts or significantly longer mirror-beveling time.
- the polishing load is 2 kgf or more
- the inclination angle of the wafer with respect to the polishing mouth is 40 ° or more.
- the hardness of the polishing cloth is ASKER C hardness
- the upper limit of the polishing load is not particularly limited.However, according to the hardness of the polishing cloth, the amount of sinking of the wafer into the polishing cross is confirmed so that the overpolishing width becomes 400 ⁇ m or less. What is necessary is just to install suitably for a heavy load. Practical Specifically, the upper limit of the polishing load may be about 5 kg.
- FIG. 1 is an explanatory view showing an example of a mirror chamfering polishing apparatus according to the present invention, wherein (a) has a polishing cloth having a multilayer structure, and (b) has a polishing cloth having a single layer structure. Show things.
- FIG. 2 is an explanatory view of a main part of a mirror chamfering wafer of the present invention.
- FIG. 3 is an explanatory perspective view showing ⁇ : ⁇ in an exaggerated manner.
- FIG. 4 is a site map of the sample and the wafer which have been mirror-polished in the third embodiment.
- FIG. 5 is a cross-section diagram of the sample wafer that has been mirror-polished in the third embodiment.
- FIG. 6 is a site map of the sample ⁇ which is mirror-polished in Comparative Example 2.
- FIG. 7 is a cross-section diagram of the sample ⁇ a mirror-chamfered in Comparative Example 2.
- FIG. 8 is a graph showing the results of site flatness in Examples 1 to 4 and Comparative Examples 1 to 3 measured at E.E.1 mm.
- FIG. 9 is a graph showing the evaluation results of the overpolishing width in Examples 5 to 19 and Comparative Examples 4 to 6.
- FIG. 10 is a graph showing the evaluation results of the contact lengths of the slope portions in Examples 5 to 19 and Comparative Examples 4 to 6.
- FIG. 11 is a graph showing the evaluation results of the contact lengths at the tips in Examples 5 to 19 and Comparative Examples 4 to 6.
- FIGS. 12A and 12B are explanatory views showing one example of a conventional mirror chamfering polishing apparatus.
- FIG. 12A shows a polishing cloth having a multi-layer polishing cloth
- FIG. 12B shows a polishing cloth having a single-layer polishing cloth. Shows the one equipped with
- FIG. 13 is an explanatory view of a main part of a conventional mirror surface chamfering wafer.
- FIG. 1 shows a mirror chamfering polishing apparatus 10a according to the present invention.
- the basic configuration is the same as that of the conventional apparatus 10 shown in FIG. 12, but the conventional polishing cloth (polishing pad) 16 is used.
- the difference is that polishing cloths 17 A and 17 B having different hardnesses are used instead of A and 16 B. Therefore, description of other configurations will not be repeated.
- the same or similar members as those in FIG. 12 are indicated by the same or similar reference numerals.
- the polishing cloth for mirror polishing 17 A of the present invention has a multilayer structure composed of at least two layers of an outer polishing cloth layer 17 a and an inner sponge layer 17 b.
- the structure is good, and the hardness of each layer is specified within a certain range, so that a good mirror surface chamfering treatment (over polishing width 400 (0 ⁇ m or less) is clearly distinguished from the polishing pad 16 A having a multilayer structure described in the above-mentioned publication.
- the polishing cloth layer 17a is made of a non-woven fabric, a resin processed product of a non-woven fabric, a synthetic resin foam, a synthetic leather or a composite product thereof, and has a hardness of Asker C hardness 65 or more, preferably Asker C hardness 68 or more. It is necessary to use Suba 400 H (Ascar C hardness 68), Suba 600 (Ascar C hardness 78), Suba 800 0 (Ascar C hardness 8 1) or the like is preferably used.
- the Asker C hardness which indicates the hardness of a polishing cloth, a sponge material, or the like, is a value measured by an Asker rubber hardness meter C, which is a kind of a spring hardness tester. This is a value based on SRIS 0101 which is a standard of the Japan Rubber Association.
- the material used for the sponge layer is not particularly limited, and any material may be used as long as the material has a flexibility that can be attached to the rotating drum and has a hardness of ASKER C hardness of 40 or less.
- a silicone rubber sponge or a sponge-like silicone simply called silicon sponge can be suitably used.
- the sponge layer is not limited to sponge-like foams, but may be used as long as it is capable of elastic deformation and has a hardness within a desired range.
- the lower limit may be about 10 in Asker C hardness.
- the hardness of the sponge layer 17b is lower than that of the polishing cloth layer 17a, and it is necessary to use one having an Ascar C hardness of 40 or less.
- the thickness of the polishing cloth layer 17a is preferably 1.3 mm or less, and the thickness of the sponge layer 17b is preferably 1.0 mm or more.
- the polishing cloth 17B for mirror chamfering is 1 Consists of polishing cloth layer 17 only. Although it has a single-layer structure, by specifying the hardness of the polishing cloth layer within a predetermined range, a good mirror chamfering treatment (overpolishing width 400 ⁇ m or less) This is clearly distinguished from the polishing pad 16B having the single-layer structure described in the above-mentioned publication in the point that the above-described method is enabled.
- the material of the polishing cloth layer of the polishing cloth 17B for mirror polishing the same material as that of the polishing cloth layer 17a can be applied.
- the mirror chamfer wafer Wa of the present invention is one in which the overpolish width 32 due to the mirror chamfer is suppressed to 400 ⁇ m or less.
- the chamfer (500 / ⁇ m) + over polish width ( (Less than 400 ⁇ m) is less than 900 ⁇ m, so that sagging of the outer periphery does not occur, and the flatness of the wafer is not affected.
- a polishing load of 2 kgf or more and the polishing cloth are required. This can be achieved by performing mirror chamfering polishing while setting the tilt angle of the wafer with respect to 17 to 40 ° to 55 °.
- the inclination angle of the wafer with respect to the polishing cloth 17 means the angle between the perpendicular and the wafer with respect to the polishing cloth 17.
- the amount of polishing can be increased, and even a short period of time, stable mirror chamfering without residual polishing can be performed.
- the upper limit of the polishing load is not particularly limited, but practically, the upper limit of about 5 kg is sufficient.
- the inclination angle to 40 ° to 55 °, the slope portion and the tip portion of the chamfered portion can be polished at the same time, and can be efficiently mirror-finished, thereby reducing work time and productivity. Can be raised.
- FIG. 3 is an explanatory perspective view showing the wafer W in an exaggerated manner.
- 34 shows a portion near the main surface of the wafer W called a slope portion
- 36 shows a portion near the outermost periphery called a tip portion.
- 34a indicates the contact length between the inclined portion 34 and the polishing cloth
- 36a indicates the contact length between the tip 36 and the polishing cloth 17.
- an etched wafer having a diameter of 200 mm and a crystal orientation of ⁇ 100> and having a chamfered outer periphery was used as the sample wafer. This chamfer was performed using the seven types of polishing cloths shown in Table 1 using a mirror chamfering machine as shown in FIG.
- the hardness and thickness of the polishing cloth and sponge material (silicon sponge) shown in Table 1 are as follows. S uba—Lite (Mouth Dale): Asker C hardness 5 3: Thickness 1.27mm
- Subaba 400 (manufactured by Mouth Dale): Asker C hardness 61: Thickness 1.27 mm
- Subaba 400H (manufactured by Mouth Dale): Asker. Hardness 6 8: Thickness 1.2 / mm
- Subba 600 manufactured by Mouth Dale: Ascar C hardness 78: Thickness 1.27 mm
- Sponge material Ascar C hardness 3 5 : Thickness 1. Omm
- Table 2 shows the over polish widths of the sample wafers which were mirror-polished using each polishing hole.
- the overpolishing width can be determined by enlarging and observing the outer periphery (chamfered portion) of the wafer with a video microscope.
- the width (length) of the mirror surface on the main surface is evaluated based on the boundary of the main surface.
- the over polish width tends to vary.
- the Asker C hardness was 65 or less, the variation was about ⁇ 50 ⁇ m or more.
- the Asker C hardness is 65 or more, the variation in overpolishing width could be suppressed to about 20 ⁇ m in soil.
- the SFQR Site Front least-squares Range
- SFQR Site Front least-squares Range
- FIGS. 4 and 5 show a site map and a cross section of flatness in Example 3 (Suba 800 + sponge material), respectively.
- a flatness site map diagram and a cross-section diagram in the case of Comparative Example 2 are shown in FIGS.
- Comparative Example 2 as shown in FIG. 7, it was found that sagging of the outer periphery occurred.
- Fig. 8 shows the results of the site flatness in Examples 1 to 4 and Comparative Examples 1 to 3 measured at E.E. 1 mm.
- the horizontal axis in Fig. 8 shows the over-polishing width of the wafer, and the vertical axis shows the yield of non-defective products for the flatness standard S F QR ⁇ 0.18 ⁇ m.
- the yield of good site flatness is 62% when the over polish width is 600 ⁇ , and for 500 / X m It is about 60% at about 60% and 500 ⁇ m or more, but it was confirmed that the yield could be improved to 90% or more if the over polish width was suppressed to 400 ⁇ m or less. .
- SF QR is almost 0.18 ⁇ or less in the wafer surface, and how to improve the yield of non-defective products needs to be improved in the outer periphery of the wafer, and the over polish width must be increased. It can be implemented by controlling. This is achieved by changing the type of polishing cloth used in the polishing process for mirror chamfering, so that the over polish width is currently used as the polishing cross Suba 400 (Comparative Example 2). It was confirmed that it can be suppressed to 400 ⁇ m or less, which is significantly suppressed from 500 ⁇ m achieved by the method.
- the over polish width is about 500 to 600 ⁇ , the yield may decrease. Although this depends on the conditions for polishing the main surface, it is considered that the abrasive easily enters the overpolished portion and is excessively polished, which also affects the vicinity of 2 mm from the outer periphery. However, when the over polish width was 150 ⁇ m, such a tendency was not observed.
- Sample wafer An etched wafer having a diameter of 20 O mm and a crystal orientation of ⁇ 100> and having a chamfered outer periphery of the wafer was used.
- Mirror chamfering uses six types of polishing cloths shown in Table 3 and a polishing load of 2 kgf (Examples 5, 8, 11, 14, 17 and Comparative Example 4), 2.5 kgf ( Examples 6, 9, 12, 15, 18 and Comparative Example 5) and 3 kgf (Examples 7, 10, 13, 16, 19 and Comparative Example 6) were divided into three stages. This was performed by a mirror chamfering device as shown in FIG.
- Polishing time ⁇ Abrasion is fixed for 10 seconds without rotating.
- the over polish width can be obtained by using any of the polishing cloth of the multilayer structure (Examples 8 to 19) and the single layer structure (Examples 5 to 7). Was suppressed to 400 ⁇ m or less.
- the polishing width of the polishing cloth of the present invention can be adjusted to have an overpolishing width of 400 m or less. It could be confirmed.
- the polishing cloth of the multilayer structure (Examples 8 to 19) has both the contact length of the slope and the contact length of the tip. Although it is shorter than in the case, there is a disadvantage that the time required for the polishing process becomes longer, but there is no change in that the over polish width is suppressed to 400 ⁇ m or less. 8 Note that the present invention is not limited to the above embodiment. In the present embodiment, a silicon wafer is described as an example.
- a wafer requiring high flatness such as a quartz wafer ceramic substrate
- the same can be applied to any wafer that requires polishing of the chamfered part to prevent dust (improve the surface roughness of the chamfered part).
- the wafer outer peripheral sag can be suppressed, and good flatness (flatness) can be achieved.
- the polishing cloth for mirror chamfering of the present invention it becomes possible to efficiently manufacture a mirror chamfered wafer having an overpolishing width of 400 / Xm or less.
- the mirror beveling apparatus of the present invention can be efficiently manufactured by the mirror beveling apparatus provided with the polishing hole for mirror beveling of the present invention and the mirror beveling method using the apparatus.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020027014191A KR100818683B1 (ko) | 2000-07-10 | 2001-07-06 | 경면 면취 웨이퍼, 경면 면취용 연마 클로스 및 경면 면취연마장치 및 방법 |
JP2002509099A JPWO2002005337A1 (ja) | 2000-07-10 | 2001-07-06 | 鏡面面取りウェーハ、鏡面面取り用研磨クロス、及び鏡面面取り研磨装置及び方法 |
US10/332,312 US6962521B2 (en) | 2000-07-10 | 2001-07-06 | Edge polished wafer, polishing cloth for edge polishing, and apparatus and method for edge polishing |
EP01947888A EP1306891A4 (en) | 2000-07-10 | 2001-07-06 | MIRROR BROWN WARP, MIRROR BAG AND MIRROR BAG MACHINE AND METHOD |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000208459 | 2000-07-10 | ||
JP2000-208459 | 2000-07-10 |
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WO2002005337A1 true WO2002005337A1 (fr) | 2002-01-17 |
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PCT/JP2001/005888 WO2002005337A1 (fr) | 2000-07-10 | 2001-07-06 | Tranche a chanfreinage en miroir, tissu a polir pour chanfreinage en miroir, machine a polir pour chanfreinage en miroir et procede associe |
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US (1) | US6962521B2 (ja) |
EP (1) | EP1306891A4 (ja) |
JP (1) | JPWO2002005337A1 (ja) |
KR (1) | KR100818683B1 (ja) |
TW (1) | TW531767B (ja) |
WO (1) | WO2002005337A1 (ja) |
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WO2006046403A1 (ja) * | 2004-10-27 | 2006-05-04 | Shin-Etsu Handotai Co., Ltd. | 半導体ウエーハの製造方法及び半導体ウエーハ |
WO2006090574A1 (ja) * | 2005-02-22 | 2006-08-31 | Shin-Etsu Handotai Co., Ltd. | 半導体ウェーハの製造方法および半導体ウェーハの鏡面面取り方法 |
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KR20160113723A (ko) | 2014-02-17 | 2016-09-30 | 가부시키가이샤 사무코 | 반도체 웨이퍼의 제조 방법 |
CN106816368A (zh) * | 2015-12-01 | 2017-06-09 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构和cmos晶体管的形成方法 |
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CN105658377A (zh) * | 2013-10-04 | 2016-06-08 | 福吉米株式会社 | 研磨装置以及研磨方法 |
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- 2001-07-06 WO PCT/JP2001/005888 patent/WO2002005337A1/ja active Application Filing
- 2001-07-06 US US10/332,312 patent/US6962521B2/en not_active Expired - Lifetime
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Cited By (13)
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DE10214129C1 (de) * | 2002-03-28 | 2003-08-14 | Wacker Siltronic Halbleitermat | Verfahren zur Politur der Kante einer Halbleiterscheibe |
WO2006046403A1 (ja) * | 2004-10-27 | 2006-05-04 | Shin-Etsu Handotai Co., Ltd. | 半導体ウエーハの製造方法及び半導体ウエーハ |
US7507146B2 (en) | 2004-10-27 | 2009-03-24 | Shin-Etsu Handotai Co., Ltd. | Method for producing semiconductor wafer and semiconductor wafer |
WO2006090574A1 (ja) * | 2005-02-22 | 2006-08-31 | Shin-Etsu Handotai Co., Ltd. | 半導体ウェーハの製造方法および半導体ウェーハの鏡面面取り方法 |
JP2007036231A (ja) * | 2005-07-21 | 2007-02-08 | Siltronic Ag | 半導体ウェーハ及び半導体ウェーハを作製する方法 |
US8927617B2 (en) | 2008-06-30 | 2015-01-06 | Kimberly-Clark Worldwide, Inc. | Fragranced water-sensitive film |
JP2010069592A (ja) * | 2008-09-19 | 2010-04-02 | Asahi Kasei Fibers Corp | テクスチャー加工研磨布 |
JP2012009550A (ja) * | 2010-06-23 | 2012-01-12 | Disco Abrasive Syst Ltd | ウエーハの加工方法 |
KR20160113723A (ko) | 2014-02-17 | 2016-09-30 | 가부시키가이샤 사무코 | 반도체 웨이퍼의 제조 방법 |
US9991110B2 (en) | 2014-02-17 | 2018-06-05 | Sumco Corporation | Method for manufacturing semiconductor wafer |
CN106816368A (zh) * | 2015-12-01 | 2017-06-09 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构和cmos晶体管的形成方法 |
CN106816368B (zh) * | 2015-12-01 | 2019-11-05 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构和cmos晶体管的形成方法 |
JP2019118981A (ja) * | 2017-12-28 | 2019-07-22 | 富士紡ホールディングス株式会社 | 研磨パッド |
Also Published As
Publication number | Publication date |
---|---|
JPWO2002005337A1 (ja) | 2004-01-08 |
KR20030040204A (ko) | 2003-05-22 |
EP1306891A1 (en) | 2003-05-02 |
TW531767B (en) | 2003-05-11 |
US6962521B2 (en) | 2005-11-08 |
KR100818683B1 (ko) | 2008-04-01 |
EP1306891A4 (en) | 2007-05-23 |
US20030153251A1 (en) | 2003-08-14 |
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