WO2013012226A2 - Cmp 패드 컨디셔너 - Google Patents
Cmp 패드 컨디셔너 Download PDFInfo
- Publication number
- WO2013012226A2 WO2013012226A2 PCT/KR2012/005649 KR2012005649W WO2013012226A2 WO 2013012226 A2 WO2013012226 A2 WO 2013012226A2 KR 2012005649 W KR2012005649 W KR 2012005649W WO 2013012226 A2 WO2013012226 A2 WO 2013012226A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- pad conditioner
- cmp pad
- tip portion
- cutting tip
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims abstract description 109
- 238000005520 cutting process Methods 0.000 claims abstract description 93
- 229910003460 diamond Inorganic materials 0.000 claims description 75
- 239000010432 diamond Substances 0.000 claims description 75
- 230000008021 deposition Effects 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 31
- 239000011247 coating layer Substances 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 6
- 239000006061 abrasive grain Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000000151 deposition Methods 0.000 description 40
- 238000005498 polishing Methods 0.000 description 29
- 235000012431 wafers Nutrition 0.000 description 13
- 230000003750 conditioning effect Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000010802 sludge Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910009043 WC-Co Inorganic materials 0.000 description 1
- 229910003134 ZrOx Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical class B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- -1 tungsten nitride Chemical class 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table 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
-
- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/017—Devices or means for dressing, cleaning or otherwise conditioning 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
Definitions
- the present invention has a substrate and a cutting tip pattern formed on at least one surface of the substrate.
- the present invention relates to a CMP pad conditioner, and more particularly, to a CMP pad conditioner having a cutting tip pattern having a structure capable of improving productivity by improving the structure of the cutting tip pattern and ensuring the strength and safety of the fine cutting tip pattern sufficiently. will be.
- CMP is chemical-by at the time of such a dissolution, in the action of mechanical polishing and chemical polishing to remove processing solution is a grinding process that obtain the flatness of the semiconductor wafer.
- the principle of CMP polishing is to supply a polishing liquid containing abrasive particles and a chemical liquid on the polishing pad while relatively pressing the polishing pad and the wafer together. Numerous foam pores on the surface of urethane polishing pads hold new polishing liquids, providing consistent polishing efficiency and polishing uniformity across the wafer surface.
- the pad conditioner is used to finely polish the surface of the polishing pad to allow CMP pad conditioning to create new micro pores.
- the CMP pad conditioning operation can be performed simultaneously with the CMP operation, which is the main task for improving productivity. This is called In-situ Conditioning.
- polishing liquid used in the CMP operation includes abrasive particles such as silica, alumina, or ceria, and the CMP process is largely divided into oxidized CMP and metal CMP according to the type of polishing liquid used. do.
- Polishing solution for CMP oxide used in the electron is the pH value is usually 1012.
- the pH of the metal CMP grinding veins used in the latter is 4 or less, and an acidic solution is used.
- Conventional conventional CMP pad conditioners include electrodeposited CMP pad conditioners manufactured by electrodeposition and fused CM p pad conditioners which melt metal powder at high temperatures.
- metal ions released from the metal binder due to corrosion may act as the main cause of the so-called metal ion contaminat ion, which moves to the metal line of the semiconductor circuit during the metal CMP process and causes a short circuit. . Short-circuit failures due to these metal contaminations are found after all the circuit-making processes have been completed, so the cost of production loss is indeed enormous.
- This patent also proposes an invention in which a diamond thin film using a CVD method is coated on the entire surface of a substrate by processing a substrate on which at least one surface a plurality of polygons protruding at a substantially uniform height are arranged.
- the diverter and the like are cutting tips of the irregular shape.
- such a polishing pad conditioner is composed of a plurality of cutting tips protruding with a substantially uniform height of the cutting tip, and the tips having the same height may be used to cut the polyurethane polishing pad little by little during conditioning. It can play a role, but it does not serve to crush large Debris generated during the conditioning process or to sweep out the sludge polished from the wafer and discharge it efficiently.
- the cutting tips for this role include cutting tips having different heights, thereby reducing the size of the debris generated during conditioning and smoothing the flow of sludge.
- the construction of the cutting tip is essential.
- This CMP conditioner has two problems. First. In order to form the cutting tip pattern on the substrate with the primary diamond deposition fill, the diamond deposition layer must be formed on the substrate by the height of the cutting tip pattern.
- the diamond growth rate is 0.1 0.3um / hr when the thermal filament method is used.
- Another problem is that diamond has a high hardness, but high brittleness, and the impact strength is very low. Considering the frictional wear between the conditioner pressure and the abrasive while the fine cutting tip pattern is being polished in the CMP machine, it is difficult to guarantee the stability of the cutting tip pattern such as breakage and dropout of the cutting tip pattern. Breaking and dropping of the cutting tip pattern is a problem that causes scratches of the silicon wafer.
- Another object of the present invention is to provide a CMP pad conditioner capable of ensuring strength and safety while forming a cutting tip pattern in a fine structure.
- Another object of the present invention is to provide a CMP pad conditioner having a cutting tip pattern in which debris is removed and foreign substances such as sludge are efficiently discharged during conditioning.
- the present invention is a substrate.
- the CMP pad conditioner having a cutting tip pattern formed on at least one surface of the substrate.
- the cutting tip pattern provides a CMP pad conditioner comprising a plurality of organ tip portions formed spaced apart from each other on the substrate: and a diamond deposition tip portion formed on the plurality of substrate tip portions.
- the diamond deposition tips formed on the plurality of substrate tips are formed to have the same thickness, but may be formed so that the height of the cutting team forming the cutting tip pattern is the same.
- some of the plurality of engine tips may be formed to have different heights, or different thicknesses of some of the diamond deposition tips may be formed to have different heights of the cutting tips forming the cutting tip pattern.
- the plurality of substrate tip portions are formed to be different from each other, the diamond deposition tip portion is formed on all the substrate lip portions having a constant thickness Is effective.
- the present invention provides a substrate.
- Cutting tip pattern formed on at least one surface of the substrate A CMP pad conditioner having: a cutting tip pattern comprising: a plurality of substrate tip portions spaced apart from each other on the substrate; And a diamond deposition tip portion formed on a portion of the substrate tip portion of the plurality of substrate tip portions, thereby providing a CMP pad conditioner.
- the plurality of substrate tips are formed at the same height with each other, the diamond deposition tip portion is formed on the substrate tip portion on one side of the adjacent substrate tips having a constant thickness. It may be desirable to be formed so that the height of the cutting tip that is not formed on the other side of the substrate tip portion to form a cutting tip pattern.
- the spacing between the substrate tips is more preferably formed of depressions recessed from the substrate.
- the side cross-sectional shape of the substrate tip portion has a polygonal cross-sectional shape.
- the planar shape of the substrate tip portion preferably has a polygonal or circular or elliptical shape.
- the thickness of the diamond deposition tip portion is 1 to ⁇ .
- the upper surface of the cutting tip pattern is preferably dressing treatment with a resin wheel containing a grinding wheel or diamond abrasive grains containing an abrasive of SiC.
- ⁇ 40> Also. It is more preferable to further include a diamond coating layer coated on the upper surface of the substrate and the cutting tip pattern.
- the cutting tip pattern can be made with a fine structure below lOOum.
- the present invention has the following excellent effects.
- the CMP pad conditioner of the present invention it is possible to ensure the strength and safety while forming a cutting tip pattern in a fine structure.
- FIG. 1 is a cross-sectional view of a conventional CMP pad conditioner
- FIGS. 3A and 3B are cross-sectional views of CMP pad conditioners according to another embodiment of the present invention.
- 4A and 4B are short cuts of a CMP pad conditioner according to another embodiment of the present invention.
- 5A and 5B are short cuts of a CMP pad conditioner according to another embodiment of the present invention.
- FIG. 6 is a CMP pad conditioner cutting tip pattern durability experiment photo of FIG.
- Figure 7 is a CMP pad conditioner cutting tip pattern durability experimental photograph according to the present invention.
- FIGS. 4A and 5B illustrate embodiments of the present invention. Only a part of the cutting tips forming the cutting pattern is a cross-sectional view of the CMP pad conditioner including the substrate tip portion and the diamond deposition tip portion.
- the CMP pad conditioner (1) according to the invention comprises a substrate (10). And a cutting tip pattern 20 formed on at least one surface of the substrate 10.
- the substrate 10 may be manufactured to have a disk shape by using a material such as a general iron alloy, cemented carbide, or ceramic as a material having high strength and hardness.
- the material of the substrate 10 is SiC. Si 3 N 4 . At least one of the . It is made of one material, or SiC. Si 3 N 4 . It is desirable to provide a mixed material of WC.
- substrate 10 is a tungsten carbonide-cobalt (WC-Co) system depending on a case.
- Tungsten carbonide (WC) series cemented carbide such as tungsten carbonide-titanium carbide-tantalum carbide-cobalt (WC-TiC-TaC-Co), as well as cermet (TiCN), boron carbide (B4C) series, titanium borite ( It can be made of TiB2) cemented carbide.
- WC-Co tungsten carbonide-cobalt
- the material of the substrate 10 is preferably a substrate (10) or (10) made of silicon nitride (Si3N4) or silicon (Si), which is a ceramic material, in addition to cemented carbide.
- Other available ceramic materials include aluminum oxide (AI203). , Aluminum nitride (A1N), titanium oxide (TK) 2), paper Ruconium (ZrOx), silicon oxide (Si02), silicon carbide (SiC), silicon oxynitride (SiOxNy), tungsten nitride (WNx), tungsten oxide (WOx), diamond like coating (DLC), boron nitride (BN) Or chromium oxide (Cr203) may be used.
- the shape of the substrate 10 may preferably have a circular disk shape in plan view, and may have a polygonal planar shape in some cases.
- the substrate 10 is subjected to a pretreatment process using ultrasonic waves for the deposition of the diamond vapor deposition tip 23 by planarizing the surface by grinding and lapping at least one surface.
- the cutting tip pattern 20 is formed on or partially formed on the plurality of substrate tips 21 and the plurality of substrate tips 21 formed on one surface of the substrate 10.
- the diamond deposition tip portion 23 is formed on the substrate lip portion 21.
- the substrate tip portions 21 may be formed at the same height or different heights at intervals spaced apart from each other on one surface of the substrate 10. At this time. Substrate tip portion 21 is formed in a rectangular cross-sectional shape spaced apart from each other by the depressions 25, as shown in Figures 2a to 4b. As shown in FIGS. 5A and 5B, the substrate tip 21 having a rectangular cross section and the substrate tip 21 a having a triangular cross section may have a structure alternately formed at intervals spaced apart from each other by the recess 25. . Also. The planar shape of the substrate tip portion 21 may be formed in a polygonal or circular or elliptical shape.
- the shape of the substrate tip portion 21 is a polygonal horn shape, a polygonal shape, or a cone or an elliptical cone shape. Or it can be seen that it can be formed in the shape of a circle or ellipse.
- the substrate tip portions 21 may be formed using a method such as mechanical processing or laser processing or etching the substrate 10.
- the diamond deposition tip portions 23 are formed on the plurality of substrate tip portions 21 with a constant thickness, and are formed on all the substrate tip portions 21 as shown in FIGS. 2A to 3B, or the plurality of substrate tip portions ( 21) It may be formed only on a portion of the substrate tip portion 21, which is formed on the substrate tip portion 21 on one side of the substrate tip portion 21 adjacent to each other, as shown in Figures 4a to 5b, the other substrate It is preferable to be non-formed on the tip part 21.
- the cross-sectional shape of the substrate tips 21 and 21a has a rectangular cross-sectional structure.
- the triangular cross-sectional structure are alternately formed, the diamond deposition tip portion 23 is preferably formed on the substrate tip portion 21 of the rectangular cross-sectional structure.
- the diamond deposition tip portion 23 can be formed on the substrate tip portion 21 using vapor chemical vapor deposition (CVD), for example, before the substrate tip portion 21 is formed.
- CVD vapor chemical vapor deposition
- a diamond deposition layer may be formed and planarized on one surface thereof, and then the diamond deposition layer of the remaining region may be removed, leaving only the diamond deposition layer of the region where the substrate lip 21 is to be formed.
- the chemical vapor deposition conditions of the diamond deposition layer is 10 ⁇ 55torr, hydrogen and methane
- the temperature of the substrate 10 is about 900 degrees, while the temperature of the filament is maintained between 1900 and 2000 degrees while the height of the substrate 10 and the filament is maintained at 10 15 10 intervals. It is preferable.
- the diamond deposition layer deposited as described above is flattened to a thickness of 1 to lOym using a resin or ceramic-based polishing plate having abrasive grains of 2000 mesh or more in the planarization process to ensure the bending and overall uniformity of the particles. desirable.
- the thickness of the diamond deposition tip portion 23 formed on the substrate tip portion 21 can be uniformly formed to any thickness of 1 to 10 mu in.
- Removal of the diamond deposited layer may be performed by etching (eg reactive ion etching) or etching.
- the top surface of the cutting tip pattern 20 may generate a height difference due to etching or mechanical processing. Collapse of edge shape. Or it is preferable to go through the dressing treatment in order to prevent the phenomenon such as the bending of the cutting tip cross-section.
- This dressing treatment is a grindstone containing SiC abrasives. Or a resin wheel including diamond abrasive grains. At this time, it is preferable that the resin wheel including the abrasive grindstone or diamond abrasive grain contains more than 2000 mesh fine abrasives in consideration of the surface roughness and the stability of the sharp tip.
- the diamond coating layer 30 is a thin film thickness of the thinner than the thickness of the diamond deposition tip portion 23 using vapor phase chemical vapor deposition (CVD). As shown in Figure 4a, 5a, it may be coated on the substrate 10 and the cutting tip pattern (20). Before forming the diamond coating layer 30, it is preferable to perform ultrasonic pretreatment of the substrate 10 having the substrate tip 21 and the diamond deposition tip 23 formed thereon, which is a fine diamond in the ultrasonic pretreatment process. This is to form a fine scratch on the diamond deposition tip portion 23, the remaining depressions 25 and the substrate tip portion 21 using the particles, so that the coating state of the diamond coating layer 30 is made firm.
- the cutting tip pattern 20 in the state of forming the diamond coating worm 30 is shown in Figure 3a. As shown in Figs. 4A and 5A, they have alternating height differences.
- the diamond coating layer 30 may be a case where the durability of the cutting tip pattern 20 is sufficiently ensured by using only the substrate tip portion 21 and the diamond deposition tip portion 23, or in consideration of conditions of use. 2B, 3B, 4B, and 5B, as a matter of course, the configuration may be omitted in the cutting 3 ⁇ 4 pattern 20.
- the CMP pad conditioner according to the present invention has a structure in which the diamond deposition tip portion 23 is formed on the substrate tip portion 21.
- the thickness of the diamond deposition tip 23 may be finely formed. Therefore, the diamond deposition height for forming the diamond deposition tip portion 23 of the cutting tip pattern 20 is lowered .
- the substrate tip portion 21 has a height of 30-60um, which is the height of the 3 ⁇ 4 cutting tip pattern 20 for use as the cutting tip of the conditioner (1). Since it is formed together with the diamond deposition time for the diamond deposition tip portion 23 is significantly reduced. By this. The productivity of CMP pad conditioner (1) can be improved.
- the cutting tip pattern 20 is formed by the substrate 3 ⁇ 4 portion 21 and the diamond deposition tip 23 formed on the substrate 10. Unlike the conventional CMP pad conditioner, which forms the cut tip pattern 20 only by the diamond layer, durability, such as the strength and stability of the fastened “ tip pattern 20 formed with a fine structure, is sufficiently ensured. It is possible to solve the problem of causing scratches on the wafer by preventing breakage and dropping of the cutting tip pattern 20 in the process.
- the CMP pad conditioner 1 of the CMP pad conditioner according to the present invention has a structure in which the cutting tip pattern 20 is composed of cutting tips having different heights from each other. Pad polishing is performed, debris generated during the conditioning process is crushed by the low cutting tip patterns, and the wafer is polished on the wafer through a space formed by the height difference of the cutting tip patterns 20. There is an excellent effect of efficiently discharging the sludge to the outside.
- Sample 1 is a conventional CMP pad conditioner in which a cutting tip pattern is formed only of diamond
- Sample 2 is a substrate tip 21 and diamond deposition, which are cutting tip patterns 20 having a configuration as shown in FIG. 2A.
- a CMP pad conditioner 1 according to the invention consisting of a tip section 23.
- sample 1 deposits 35 ym of diamond on a 20 ⁇ cemented carbide substrate and processes the cutting tip pattern (size 50 ⁇ ( ⁇ ) x 50 ym (W)) at intervals of 1 ⁇ using a laser, followed by ultrasonic cleaning. And a sample coated with a diamond coating layer of 5 ym by thermal preheating by diamond pretreatment.
- sample 2 is processed to form a cutting tip pattern 20 having a thickness of 35 ⁇ together with the substrate tip 21 with a diamond deposition tip portion 23 having a thickness of 5 ⁇ on the two-second cemented carbide substrate 10, Ultrasonic cleaning and diamond pre-treatment is a sample coated with a 5 ⁇ diamond coating layer 30 in a hot filament method.
- the shear force of 20 has a shear force 10 times higher than that of the conventional sample 1 due to the mechanical toughness of the substrate tip portion 21.
- the CMP pad conditioner 1 according to the present invention was confirmed that the durability, such as the strength and stability of the cutting tip pattern 20 formed in a fine structure is sufficiently guaranteed.
- the CMP pad conditioner according to the present invention can improve productivity by forming a cutting tip pattern quickly and easily, and can sufficiently ensure the strength and safety while forming the cutting tip pattern in a fine structure.
- debris is removed and foreign substances such as sludge are discharged efficiently during the conditioning process.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280035966.8A CN103688344B (zh) | 2011-07-18 | 2012-07-16 | Cmp 垫调整器 |
DE112012003037.0T DE112012003037B4 (de) | 2011-07-18 | 2012-07-16 | Konditionierer für CMP-Pads |
US14/233,489 US10166653B2 (en) | 2011-07-18 | 2012-07-16 | CMP pad conditioner |
JP2014521548A JP5843120B2 (ja) | 2011-07-18 | 2012-07-16 | Cmpパッドコンディショナー |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20110070924 | 2011-07-18 | ||
KR10-2011-0070924 | 2011-07-18 | ||
KR1020120066596A KR101339722B1 (ko) | 2011-07-18 | 2012-06-21 | Cmp 패드 컨디셔너 |
KR10-2012-0066596 | 2012-06-21 |
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JP (1) | JP5843120B2 (ko) |
KR (2) | KR101339722B1 (ko) |
CN (1) | CN103688344B (ko) |
DE (1) | DE112012003037B4 (ko) |
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US20150004787A1 (en) * | 2013-06-28 | 2015-01-01 | Taiwan Semiconductor Manufacturing Company, Ltd. | Sapphire Pad Conditioner |
WO2015034928A1 (en) | 2013-09-03 | 2015-03-12 | Moderna Therapeutics, Inc. | Chimeric polynucleotides |
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TWI548486B (zh) * | 2013-07-29 | 2016-09-11 | The method of manufacturing a dresser of the polishing pad sapphire discs | |
JP6453666B2 (ja) * | 2015-02-20 | 2019-01-16 | 東芝メモリ株式会社 | 研磨パッドドレッサの作製方法 |
JP2018032745A (ja) * | 2016-08-24 | 2018-03-01 | 東芝メモリ株式会社 | ドレッサー、ドレッサーの製造方法、及び半導体装置の製造方法 |
KR102581481B1 (ko) * | 2016-10-18 | 2023-09-21 | 삼성전자주식회사 | 화학적 기계적 연마 방법, 반도체 소자의 제조 방법, 및 반도체 제조 장치 |
TWI681843B (zh) * | 2017-12-01 | 2020-01-11 | 詠巨科技有限公司 | 拋光墊修整方法 |
KR102078342B1 (ko) | 2018-08-17 | 2020-02-19 | 동명대학교산학협력단 | 접촉 영역의 조절이 가능한 다이아몬드 컨디셔너 |
KR102229135B1 (ko) * | 2018-11-16 | 2021-03-18 | 이화다이아몬드공업 주식회사 | 개별 절삭팁 부착형 cmp 패드 컨디셔너 및 그 제조방법 |
KR20210137580A (ko) * | 2019-04-09 | 2021-11-17 | 엔테그리스, 아이엔씨. | 디스크를 위한 세그먼트 설계 |
CN115870875B (zh) * | 2022-12-08 | 2024-04-12 | 西安奕斯伟材料科技股份有限公司 | 一种用于研磨硅片的研磨盘及研磨设备 |
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Also Published As
Publication number | Publication date |
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TWI523734B (zh) | 2016-03-01 |
CN103688344A (zh) | 2014-03-26 |
KR20130010432A (ko) | 2013-01-28 |
CN103688344B (zh) | 2016-11-09 |
US20140154960A1 (en) | 2014-06-05 |
DE112012003037T5 (de) | 2014-04-24 |
KR20130124274A (ko) | 2013-11-13 |
JP2014522739A (ja) | 2014-09-08 |
DE112012003037B4 (de) | 2021-10-14 |
KR101430580B1 (ko) | 2014-08-18 |
JP5843120B2 (ja) | 2016-01-13 |
KR101339722B1 (ko) | 2013-12-10 |
WO2013012226A3 (ko) | 2013-06-13 |
TW201309416A (zh) | 2013-03-01 |
US10166653B2 (en) | 2019-01-01 |
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