WO2012066810A1 - Cible de pulvérisation d'oxyde d'étain et d'indium (ito) - Google Patents
Cible de pulvérisation d'oxyde d'étain et d'indium (ito) Download PDFInfo
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- WO2012066810A1 WO2012066810A1 PCT/JP2011/063211 JP2011063211W WO2012066810A1 WO 2012066810 A1 WO2012066810 A1 WO 2012066810A1 JP 2011063211 W JP2011063211 W JP 2011063211W WO 2012066810 A1 WO2012066810 A1 WO 2012066810A1
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- ito
- film
- target
- clearance
- indium
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- 238000005477 sputtering target Methods 0.000 title claims abstract description 36
- 229910052738 indium Inorganic materials 0.000 claims abstract description 29
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011247 coating layer Substances 0.000 claims abstract description 27
- 229910000846 In alloy Inorganic materials 0.000 claims abstract description 14
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 10
- 229910052718 tin Inorganic materials 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910016338 Bi—Sn Inorganic materials 0.000 claims description 3
- 229910020830 Sn-Bi Inorganic materials 0.000 claims description 2
- 229910018728 Sn—Bi Inorganic materials 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract description 20
- 238000004544 sputter deposition Methods 0.000 abstract description 13
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 239000010408 film Substances 0.000 description 47
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 5
- 229910001887 tin oxide Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000005219 brazing Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3464—Sputtering using more than one target
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/086—Oxides of zinc, germanium, cadmium, indium, tin, thallium or bismuth
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
Definitions
- the present invention relates to a sputtering target used when producing a transparent conductive film by a sputtering method, and more particularly to an ITO sputtering target comprising a plurality of target materials and having divided portions.
- An ITO thin film for forming a transparent conductive film is widely used as a transparent electrode of a display device centering on a liquid crystal display, a touch panel, an EL display and the like.
- an oxide thin film for forming a transparent conductive film such as ITO is formed by sputtering.
- ITO Indium Tin Oxide
- FPD flat panel displays
- a black deposit which is considered to be a lower oxide of indium called nodule, is deposited on the surface of the target, particularly in the divided portion, and abnormal discharge occurs. It is known that it becomes a source of particles on the thin film surface.
- Patent Document 1 discloses a method of filling a clearance portion with an indium-tin alloy equal to the atomic ratio of indium and tin of the target body.
- it is necessary to measure the atomic ratio of indium and tin in the target body, and to adjust the composition of the indium-tin alloy to be injected on the basis of the result.
- the indium-tin alloy is injected into the entire clearance portion, there is a problem that the electrical characteristics of the film formed on the upper part are different from the electrical characteristics of the film formed on other portions. .
- Patent Document 2 discloses a method of filling in the clearance with indium
- Patent Document 3 discloses a method of filling an alloy having a higher melting point than the bonding material.
- indium or the like is injected into the entire clearance portion, the electrical characteristics of the film formed on the upper part thereof are different from the electrical characteristics of the film formed on other portions. was there.
- Patent Document 4 discloses a method of filling a clearance portion with a material having a different composition, although the metal oxide sintered body and the constituent elements are the same.
- the amount of oxygen is small, it has almost the same characteristics as a normal alloy, so the electrical characteristics of the film formed on the upper part are different from the electrical characteristics of the film formed on other parts.
- the amount of oxygen is large, there is almost no difference from the characteristics of ITO, so that there is a problem that it cannot be dissolved and poured into the clearance portion at a low temperature.
- JP-A-01-230768 Japanese Patent Laid-Open No. 08-144052 JP 2000-144400 A JP 2010-106330 A
- the present invention can suppress the generation of nodules and abnormal discharge even during continuous sputtering of the divided ITO target, and the characteristics of the film formed on the substrate facing the clearance part are the characteristics of the film of the other part. It is an object of the present invention to provide an ITO sputtering target, particularly an FPD sputtering target, which can obtain a film having a high uniformity in film characteristics.
- the ITO sputtering target is composed of a plurality of divided targets, and the edge of the plurality of divided targets is devised, whereby the divided target is A large target was prepared by arranging, and it was found that a sputtering target, particularly an FPD sputtering target, which can reduce defects caused by the generation of particles due to the edge of each divided target can be provided.
- the present invention 1) An ITO sputtering target in which a plurality of ITO divided targets are arranged on a backing plate and bonded to the backing plate, and indium and indium alloy are formed only on the side surface on the clearance side between the arranged ITO divided targets.
- an ITO sputtering target having a coating layer of one material selected from tin alloys is provided.
- the present invention also provides: Indium alloy or tin alloy is In—Sn, In—Bi, In—Bi—Sn, In—Ga, In—Ga—Sn, In—Ga—Bi, Sn—Ga, Sn—Bi, Sn—Ga—Bi.
- Indium alloy or tin alloy is In—Sn, In—Bi, In—Bi—Sn, In—Ga, In—Ga—Sn, In—Ga—Bi, Sn—Ga, Sn—Bi, Sn—Ga—Bi.
- the present invention also provides: The ITO sputtering target according to 1) or 2) above, wherein the clearance between the ITO divided targets is 0.2 to 0.8 mm.
- the present invention also provides:
- the thickness of the coating layer is 0.04 to 0.35 mm, and the size of the gap obtained by subtracting the thickness of the coating layer from the size of the clearance is 0.1 to 0.72 mm.
- An ITO sputtering target according to any one of 3) is provided.
- the sputtering target of the present invention thus adjusted can suppress the generation of nodules and abnormal discharge even during continuous sputtering of the divided ITO target, and the characteristics of the film formed on the substrate facing the clearance portion.
- an ITO sputtering target in particular a sputtering target for FPD, which has no difference from the characteristics of other parts of the film, that is, a film having a high uniformity of film characteristics, and can improve the yield of film formation, It has the great advantage that the quality of the can be improved.
- the ITO sputtering target of the present invention is an ITO sputtering target configured by arranging a plurality of ITO divided targets on a backing plate and bonding to the backing plate, and only on the side surface on the clearance side between the arranged ITO divided targets. And an ITO sputtering target having a structure having a coating layer of one substance selected from indium, an indium alloy, and a tin alloy. That is, the plurality of ITO divided targets arranged on the backing plate are not in close contact with each other, but have a constant interval (clearance).
- FIG. 1 shows a cross-sectional view illustrating a typical ITO sputtering target of the present invention.
- Each member of this divided ITO target can be manufactured by the following method. First, indium oxide powder and tin oxide powder are weighed so that tin oxide is 10 wt%. Normally, the tin oxide concentration of ITO is 10 wt%, but the tin oxide concentration may be in the range of 3 to 40 wt% within the allowable range for the transparent conductor characteristics. Next, the measured raw material powder is mixed and pulverized by a wet medium stirring mill or the like, and granulated for improving the fluidity. The slurry at the time of granulation is made of PVA or the like for the purpose of increasing the strength of the compact. A binder may be added.
- ITO sintered body is mechanically processed to form each member of the divided ITO target. At this time, it is more preferable to chamfer the corners to reduce the surface roughness.
- the number of divided ITO targets can be determined according to the size of the large ITO target, for example, in order to adapt to FPD.
- ITO target is generally rectangular in plan view, it can be produced by arranging a plurality of rectangular divided ITO targets corresponding to the ITO target.
- the divided ITO target is not limited to a rectangle, and other shapes, for example, a square, a triangle, a fan shape, or a combination thereof can be appropriately formed.
- the present invention includes these.
- each member of the ITO target produced as described above is coated with indium or an indium alloy on the side surface to form a coating layer of the substance.
- the means for forming the coating layer is not particularly limited, but may be formed using, for example, a brazing material made of indium or an indium alloy for bonding to the following backing plate. As other means, a thermal spraying method, a plating method, or the like can be used. Further, only the side surface can be reduced by electrolysis to produce an In-based metal. After forming the coating layer, bonding is performed as shown in FIG. 1 using a brazing material made of indium or an indium alloy on a backing plate made of copper or a copper alloy.
- indium or indium alloy is attached only to the side surface is that if indium or the like is not attached, abnormal discharge or the like based on the end portion due to the clearance between the individual members of the ITO target is likely to occur.
- indium or the like is embedded in the entire clearance as in the conventional example, the electrical characteristics of the film formed on the upper part of the part differ from the electrical characteristics of the film formed on other parts. Because it will end up.
- the clearance between the individual parts of the ITO target is 0.2 to 0.8 mm.
- the clearance between the ITO divided targets is the clearance before the coating layer is formed.
- a coating layer of one substance selected from indium, an indium alloy or a tin alloy is formed only on the clearance side surface of the ITO split target. Then, it arranges on a backing plate and joins to a backing plate.
- the thickness of the coating layer formed on the side surface of each ITO divided target is 0.04 to 0.35 mm.
- This covering layer has a thickness on one side facing the clearance. The purpose of this coating layer is to suppress the generation of nodules and abnormal discharge, and to ensure that the characteristics of the film formed on the substrate facing the clearance portion are not different from those of other portions. .
- the thickness of the coating layer is adjusted in the above range according to the clearance of the divided target. As a result of the above, it is preferable that the (size) of the gap obtained by subtracting the thickness of the coating layer from the size of the clearance is 0.1 to 0.72 mm.
- indium, an indium alloy, and a tin alloy are preferable. This is because these metals or alloys have a relatively low melting point and can be easily applied to the side surface.
- indium alloy and the tin alloy In—Sn, In—Bi, In—Bi—Sn, In—Ga, In—Ga—Sn, In—Ga—Bi, Sn—Ga, Sn— Bi, Sn—Ga—Bi can be mentioned.
- These alloys have a relatively low melting point and are more preferable materials, particularly when an alloy with indium is formed.
- Example 1 As a raw material, mixed powder obtained by mixing indium oxide powder and tin oxide powder with a specific surface area of 5 m 2 / g at a weight ratio of 9: 1 is mixed and ground in a wet medium agitation mill by a bead mill, and then used as a press mold. Then, it was molded at a pressure of 700 kg / cm 2 to produce an ITO molded body. Next, this ITO molded body is heated from room temperature to 1500 ° C. at a temperature rising rate of 5 ° C./min in an oxygen atmosphere, maintained at 1500 ° C. for 20 hours, and then cooled in the furnace. Sintered with.
- the surface of the sintered body thus obtained was ground to a thickness of 6.5 mm using a No. 400 diamond grindstone with a surface grinder, and the sides were further cut to 127 mm ⁇ 508 mm size with a diamond cutter, An ITO target member was obtained. Two such processed bodies were produced. These sintered bodies were placed on a hot plate set at 200 ° C., heated, and then 0.05 mm thick indium was attached only to the side surfaces.
- an oxygen-free copper backing plate was placed on a hot plate set at 200 ° C., and indium was used as a brazing material, and the thickness thereof was applied to about 0.2 mm.
- two ITO sintered bodies with indium attached to the side surfaces as described above were placed with their joint surfaces facing each other with a clearance of 0.4 mm, and allowed to cool to room temperature. From the above, the distance (interval) between the coating layers of the adjacent divided targets is 0.3 mm.
- This target was attached to a SYNCHRON magnetron sputtering system (BSC-7011), the input power was 2.3 W / cm 2 with a DC power source, the gas pressure was 0.6 Pa, the sputtering gas was argon (Ar), and the gas flow rate was 300 sccm. The integrated power amount was 120 WHr / cm 2 .
- the number of micro arc generation (times) was measured.
- the criteria for determining the micro arc are a detection voltage of 100 V or more, and an emission energy (sputtering voltage when the arc discharge is generated ⁇ sputtering current ⁇ generation time) is 10 mJ or less.
- Sputter integrated power is 160 WHr / cm 2
- Corning # 1737 is installed as a substrate
- the film thickness is 200 nm
- the substrate surface facing the clearance portion and 2 cm and 4 cm away from each other in the opposite direction, a total of 5 points
- Table 1 shows the results of R1 (5 points of sheet resistance, average value, variation in sheet resistance) of Example 1.
- Table 1 also shows the results of the clearance, the adhesion state of indium or the like to the clearance, the cumulative number of micro arc generation up to 120 WHr / cm 2 , the film characteristics, and the like.
- the material coated on the side surface of the split target of Example 1 is indium (In), the thickness of the coating layer is 0.05 mm, the clearance is 0.4 mm, and the number of occurrences of micro arcs is 260 times, the average value of the sheet resistance is 10.3 ⁇ / ⁇ , the variation of the sheet resistance is 7.3%, the average value of the sheet resistance is an appropriate value, the variation of the sheet resistance is small, the number of occurrences of micro arc The result that there was little was obtained.
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the small fluctuation of the sheet resistance means that the film is uniformly formed on the substrate. is there.
- Example 2 The test was performed under the same conditions as in Example 1 except that the thickness of the clothing layer was changed to 0.1 mm. The results are similarly shown in Table 1 and FIG.
- the distance (interval) between the coating layers of the adjacent divided targets is 0.2 mm.
- the number of occurrences of the micro arc is 232 times, the average value of the sheet resistance is 10.2 ⁇ / ⁇ , the variation of the sheet resistance is 7.0%, the sheet resistance is an appropriate value, the variation of the sheet resistance is small, the micro arc
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the small fluctuation of the sheet resistance means that the film is uniformly formed on the substrate. is there.
- Example 3 The conditions were the same as in Example 1 except that the clearance was changed to 0.2 mm.
- the distance (interval) between the coating layers of the adjacent divided targets is 0.1 mm.
- the results are similarly shown in Table 1 and FIG.
- the number of occurrences of the micro arc is 210 times, the average value of the sheet resistance is 10.3 ⁇ / ⁇ , the variation of the sheet resistance is 4.9%, the sheet resistance is an appropriate value, the variation of the sheet resistance is small, the micro arc The result that there were few occurrences of was obtained.
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the small fluctuation of the sheet resistance means that the film is uniformly formed on the substrate. is there.
- Example 4 The conditions were the same as in Example 1 except that the indium attached to the side surface of the ITO divided target was changed to an In—Sn alloy with a tin concentration of 10 at%. The results are similarly shown in Table 1 and FIG.
- the distance (interval) between the coating layers of the adjacent divided targets is 0.3 mm.
- the number of occurrences of the micro arc is 212 times, the average value of the sheet resistance is 10.4 ⁇ / ⁇ , the variation of the sheet resistance is 5.8%, the sheet resistance is an appropriate value, the variation of the sheet resistance is small, the micro arc
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the small fluctuation of the sheet resistance means that the film is uniformly formed on the substrate. is there.
- Example 1 The conditions were the same as in Example 1 except that nothing was attached to the side surface of the ITO divided target and the clearance of the divided target was 0.4 mm. The results are also shown in Table 1. Further, since the coating layer is not formed on the side surface of the ITO divided target, the structure is as shown in FIG. The number of occurrences of micro arc is 750 times, the average value of the sheet resistance is 10.2 ⁇ / ⁇ , the variation of the sheet resistance is 3.9%, the average value of the sheet resistance is an appropriate value, and the variation of the sheet resistance is small However, the result that the number of occurrences of the micro arc was extremely increased was obtained.
- Example 2 The test was performed under the same conditions as in Example 1 except that 0.02 mm of In was added to the side surface of the ITO divided target. The results are similarly shown in Table 1 and FIG.
- the distance (interval) between the coating layers of the adjacent divided targets is 0.3 mm.
- the number of occurrences of micro arc is 736
- the average value of the sheet resistance is 10.2 ⁇ / ⁇
- the variation of the sheet resistance is 3.9%
- the average value of the sheet resistance is an appropriate value
- the variation of the sheet resistance is small
- the result that the number of occurrences of the micro arc was extremely increased was obtained.
- Example 3 The conditions were the same as in Example 1 except that nothing was attached to the side surface of the ITO divided target and the clearance of the divided target was 0.2 mm. The results are also shown in Table 1. Further, since the coating layer is not formed on the side surface of the ITO divided target, the structure is as shown in FIG. The number of occurrences of micro arc was 508 times, the sheet resistance was 10.2 ⁇ / ⁇ , the variation in sheet resistance was 3.0%, the average value of the sheet resistance was an appropriate value, and the variation in sheet resistance was small, Although it decreased slightly compared with the comparative example 1, the result that the frequency
- the number of occurrences of micro arc was 240 times, the average value of sheet resistance was 9.4 ⁇ / ⁇ , and the variation in sheet resistance was 38.2%. As a result, the sheet resistance variation became extremely large.
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the large fluctuation of the sheet resistance in this way means that the film is not uniformly formed on the substrate.
- the number of occurrences of micro arc was 198 times, the average value of sheet resistance was 9.9 ⁇ / ⁇ , and the variation of sheet resistance was 17.6%.
- the average value of resistance deteriorated, and the variation in sheet resistance became extremely large.
- the characteristics of the film on the substrate can be evaluated by the sheet resistance.
- the large fluctuation of the sheet resistance in this way means that the film is not uniformly formed on the substrate.
- a plurality of ITO divided targets are arranged on a backing plate, and an ITO sputtering target is formed by joining to the backing plate, and the clearance side between the arranged ITO divided targets It is extremely important to provide a structure having a coating layer of one substance selected from indium, an indium alloy or a tin alloy only on the side surface. As a result, generation of nodules and abnormal discharge can be suppressed, and the characteristics of the film formed on the substrate facing the clearance part are not different from those of other parts, that is, the film characteristics are uniform. High film can be obtained.
- the sputtering target of the present invention can suppress the generation of nodules and abnormal discharge even during continuous sputtering of the divided ITO target, and the characteristics of the film formed on the substrate facing the clearance portion are other portions. It is possible to provide an ITO sputtering target capable of obtaining a film having no difference in film characteristics, that is, having a highly uniform film characteristic, and has the great advantage that the yield of film formation can be improved and the product quality can be improved. And a large sputtering target capable of reducing the defect rate due to the generation of particles caused by the divided target portion can be provided, and is particularly useful as an FPD sputtering target.
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020127017316A KR101347967B1 (ko) | 2010-11-19 | 2011-06-09 | Ito 스퍼터링 타깃 |
| JP2011541417A JP5410545B2 (ja) | 2010-11-19 | 2011-06-09 | Itoスパッタリングターゲット |
| CN201180025334.9A CN102906301B (zh) | 2010-11-19 | 2011-06-09 | Ito溅射靶 |
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| JP2010-258439 | 2010-11-19 |
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| WO2012066810A1 true WO2012066810A1 (fr) | 2012-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2011/063211 WO2012066810A1 (fr) | 2010-11-19 | 2011-06-09 | Cible de pulvérisation d'oxyde d'étain et d'indium (ito) |
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| Country | Link |
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| JP (1) | JP5410545B2 (fr) |
| KR (1) | KR101347967B1 (fr) |
| CN (1) | CN102906301B (fr) |
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| WO (1) | WO2012066810A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200328A (ja) * | 2012-03-23 | 2013-10-03 | Toray Ind Inc | 感光性樹脂組成物およびそれからなるフィルム積層体 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105908137B (zh) * | 2015-02-24 | 2020-12-15 | Jx金属株式会社 | 溅射靶 |
| CN109802016B (zh) * | 2019-01-11 | 2020-10-02 | 芜湖德豪润达光电科技有限公司 | 透明导电层制备方法、发光二极管及其制备方法 |
| JP6968300B2 (ja) * | 2019-06-10 | 2021-11-17 | 株式会社アルバック | スパッタリングターゲット及びスパッタリングターゲットの製造方法 |
| JP7426418B2 (ja) * | 2020-02-06 | 2024-02-01 | 三井金属鉱業株式会社 | スパッタリングターゲット |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01230768A (ja) * | 1988-03-08 | 1989-09-14 | Asahi Glass Co Ltd | スパッター用ターゲットユニットの製造方法および透明電導膜の製造方法 |
| JPH04333565A (ja) * | 1991-01-17 | 1992-11-20 | Mitsubishi Materials Corp | スパッタリングターゲットおよびその製造方法 |
| JPH08144052A (ja) * | 1994-11-22 | 1996-06-04 | Tosoh Corp | Itoスパッタリングターゲット |
| JPH0995782A (ja) * | 1995-10-02 | 1997-04-08 | Mitsui Mining & Smelting Co Ltd | 分割ターゲットを用いたマグネトロンスパッタリング方法 |
| JP2002146524A (ja) * | 2000-08-25 | 2002-05-22 | Nikko Materials Co Ltd | パーティクル発生の少ないスパッタリングターゲット |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161395A (ja) * | 1997-08-08 | 1999-03-05 | Tosoh Corp | Itoスパッタリングターゲット |
| JP4427831B2 (ja) * | 1998-06-08 | 2010-03-10 | 東ソー株式会社 | スパッタリングターゲットおよびその製造方法 |
| KR101000339B1 (ko) * | 2001-10-12 | 2010-12-13 | 토소가부시키가이샤 | 스퍼터링 타겟 |
| JP4318439B2 (ja) * | 2002-08-26 | 2009-08-26 | 三井金属鉱業株式会社 | スパッタリングターゲットおよびその製造方法 |
| KR101171769B1 (ko) * | 2007-01-05 | 2012-08-07 | 삼성코닝정밀소재 주식회사 | 스퍼터링용 타겟 장치 |
-
2011
- 2011-06-09 WO PCT/JP2011/063211 patent/WO2012066810A1/fr active Application Filing
- 2011-06-09 JP JP2011541417A patent/JP5410545B2/ja active Active
- 2011-06-09 KR KR1020127017316A patent/KR101347967B1/ko active Active
- 2011-06-09 CN CN201180025334.9A patent/CN102906301B/zh active Active
- 2011-06-17 TW TW100121187A patent/TWI515315B/zh active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01230768A (ja) * | 1988-03-08 | 1989-09-14 | Asahi Glass Co Ltd | スパッター用ターゲットユニットの製造方法および透明電導膜の製造方法 |
| JPH04333565A (ja) * | 1991-01-17 | 1992-11-20 | Mitsubishi Materials Corp | スパッタリングターゲットおよびその製造方法 |
| JPH08144052A (ja) * | 1994-11-22 | 1996-06-04 | Tosoh Corp | Itoスパッタリングターゲット |
| JPH0995782A (ja) * | 1995-10-02 | 1997-04-08 | Mitsui Mining & Smelting Co Ltd | 分割ターゲットを用いたマグネトロンスパッタリング方法 |
| JP2002146524A (ja) * | 2000-08-25 | 2002-05-22 | Nikko Materials Co Ltd | パーティクル発生の少ないスパッタリングターゲット |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200328A (ja) * | 2012-03-23 | 2013-10-03 | Toray Ind Inc | 感光性樹脂組成物およびそれからなるフィルム積層体 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101347967B1 (ko) | 2014-01-07 |
| CN102906301B (zh) | 2014-11-26 |
| TWI515315B (zh) | 2016-01-01 |
| JP5410545B2 (ja) | 2014-02-05 |
| JPWO2012066810A1 (ja) | 2014-05-12 |
| CN102906301A (zh) | 2013-01-30 |
| TW201221670A (en) | 2012-06-01 |
| KR20120094086A (ko) | 2012-08-23 |
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