WO2024089923A1 - 砥粒を得るための原料及びその選定方法、砥粒の製造方法、研磨液の製造方法、研磨方法、部品の製造方法、並びに、半導体部品の製造方法 - Google Patents
砥粒を得るための原料及びその選定方法、砥粒の製造方法、研磨液の製造方法、研磨方法、部品の製造方法、並びに、半導体部品の製造方法 Download PDFInfo
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- WO2024089923A1 WO2024089923A1 PCT/JP2023/017469 JP2023017469W WO2024089923A1 WO 2024089923 A1 WO2024089923 A1 WO 2024089923A1 JP 2023017469 W JP2023017469 W JP 2023017469W WO 2024089923 A1 WO2024089923 A1 WO 2024089923A1
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- Prior art keywords
- raw material
- polishing
- abrasive grains
- polished
- cerium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P95/00—Generic processes or apparatus for manufacture or treatments not covered by the other groups of this subclass
- H10P95/06—Planarisation of inorganic insulating materials
- H10P95/062—Planarisation of inorganic insulating materials involving a dielectric removal step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
- C09K3/1418—Abrasive particles per se obtained by division of a mass agglomerated by sintering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P52/00—Grinding, lapping or polishing of wafers, substrates or parts of devices
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
Definitions
- This disclosure relates to raw materials for obtaining abrasive grains and methods for selecting them, methods for manufacturing abrasive grains, methods for manufacturing polishing fluids, polishing methods, methods for manufacturing parts, methods for manufacturing semiconductor parts, etc.
- CMP Chemical Mechanical Polishing
- STI shallow trench isolation
- Known polishing solutions used in CMP include those containing abrasive grains containing cerium (see, for example, Patent Documents 1 and 2 below).
- the abrasive grains used in the polishing liquid can be obtained by subjecting the raw material for obtaining the abrasive grains to a process such as pulverization.
- a process such as pulverization.
- it is required to adjust the polishing speed of the material to be polished depending on the application, and a new method for adjusting the polishing speed of the material to be polished is required.
- polishing liquids containing abrasive grains it may be required to increase the polishing speed of silicon oxide in a pattern wafer, for example, in a pattern region having a linear silicon nitride pattern (Line)/silicon oxide pattern (Space) with a line width of 50 ⁇ m/50 ⁇ m (a pattern region in which linear silicon nitride patterns with a line width of 50 ⁇ m and linear silicon oxide patterns with a line width of 50 ⁇ m are alternately arranged).
- One aspect of the present disclosure is to provide a method for selecting a raw material for obtaining abrasive grains, the raw material selection method being capable of adjusting the polishing rate of a material to be polished when the material to be polished is polished using the abrasive grains.
- Another aspect of the present disclosure is to provide a raw material capable of obtaining abrasive grains having a high polishing rate of silicon oxide in a pattern area having a linear silicon nitride pattern/silicon oxide pattern with a line width of 50 ⁇ m/50 ⁇ m.
- Another aspect of the present disclosure is to provide a method for manufacturing abrasive grains using the raw material.
- the present disclosure relates in some aspects to the following items [1] to [13] etc.
- [1] A method for selecting a raw material for obtaining abrasive grains, the raw material containing cerium, the raw material being selected based on a peak top temperature in a differential curve of a thermogravimetric curve obtained by thermogravimetric analysis of the raw material.
- [2] The method for selecting a raw material according to [1], wherein the raw material contains cerium oxide.
- [4] The raw material according to [3], which contains cerium oxide.
- [5] The raw material according to [3] or [4], containing cerium oxide derived from a cerium complex of trimesic acid.
- [6] The raw material according to any one of [3] to [5], containing cerium oxide derived from cerium stearate.
- [7] The raw material according to any one of [3] to [6], containing cerium oxide derived from cerium hydroxide.
- a method for producing abrasive grains comprising grinding a raw material selected by the raw material selection method described in [1] or [2], or a raw material described in any one of [3] to [7].
- a method for producing a polishing liquid comprising mixing the abrasive grains obtained by the method for producing abrasive grains described in [8] with water.
- a polishing method comprising polishing a workpiece with the polishing liquid obtained by the method for producing a polishing liquid according to [9].
- a method for manufacturing a part comprising obtaining a part using a polished member polished by the polishing method according to [10] or [11].
- a method for producing a semiconductor component comprising obtaining a semiconductor component using a polished member polished by the polishing method according to [10] or [11].
- a method for selecting a raw material for obtaining abrasive grains can be provided, which is capable of adjusting the polishing rate of a material to be polished when the material to be polished is polished using the abrasive grains.
- a raw material can be provided from which abrasive grains can be obtained that have a high polishing rate of silicon oxide in a pattern area having a linear silicon nitride pattern/silicon oxide pattern with a line width of 50 ⁇ m/50 ⁇ m.
- a method for manufacturing abrasive grains using the raw material can be provided.
- a method for manufacturing a polishing liquid using abrasive grains obtained by the method for manufacturing abrasive grains can be provided.
- a polishing method can be provided using a polishing liquid obtained by the method for manufacturing a polishing liquid.
- a method for manufacturing a part using a polished member polished by the polishing method can be provided.
- a method for manufacturing a semiconductor part using a polished member polished by the polishing method can be provided.
- the numerical range indicated using “ ⁇ ” indicates a range including the numerical values described before and after “ ⁇ ” as the minimum and maximum values, respectively.
- “A or more” in the numerical range means a range exceeding A and A.
- “A or less” in the numerical range means a range less than A and A.
- the upper limit or lower limit of a numerical range of a certain stage can be arbitrarily combined with the upper limit or lower limit of a numerical range of another stage.
- the upper limit or lower limit of the numerical range may be replaced with a value shown in an experimental example.
- “A or B” may include either A or B, or may include both.
- the materials exemplified in this specification may be used alone or in combination of two or more types.
- the content of each component in the composition means the total amount of the multiple substances present in the composition, unless otherwise specified.
- the term “process” includes not only independent processes, but also processes that cannot be clearly distinguished from other processes, as long as the intended effect of the process is achieved.
- “Abrasive grain” refers to a collection of multiple particles, but for convenience, a single particle that makes up an abrasive grain is sometimes called an abrasive grain.
- the raw material and the selection method thereof according to the present embodiment are raw materials and a selection method thereof for obtaining abrasive grains (abrasive grains used in polishing liquid).
- the raw material contains cerium.
- the raw material selection method according to the present embodiment the raw material is selected based on the peak top temperature in the differential curve (DTG curve) of the thermogravimetric curve (TG curve) obtained by subjecting the raw material to thermogravimetric analysis (TGA).
- TGA thermogravimetric analysis
- the raw material according to the present embodiment has an arbitrary value as the peak top temperature in the differential curve of the thermogravimetric curve obtained by subjecting the raw material to thermogravimetric analysis, depending on the application.
- the shape of the raw material according to the present embodiment is not particularly limited, and may be, for example, particulate, fibrous, flake, liquid (e.g., highly viscous liquid), etc.
- the inventors have focused on raw materials containing cerium as raw materials for obtaining abrasive grains by performing a crushing process or the like, and have found that by adjusting the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw materials, the polishing speed of the material to be polished when the material to be polished is polished with the abrasive grains can be adjusted.
- the raw materials are selected based on the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw materials, and the polishing speed of the material to be polished when the material to be polished is polished with the abrasive grains can be adjusted by obtaining abrasive grains using such raw materials.
- the polishing speed of the material to be polished when the material to be polished is polished with the abrasive grains can be adjusted.
- a polishing speed adjustment method can be provided in which the polishing speed of the material to be polished is adjusted based on the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw materials for obtaining the abrasive grains.
- the polishing speed of the material to be polished on the pattern wafer can be adjusted.
- the polishing speed of the material to be polished can be adjusted so as to increase the polishing speed of the material to be polished, and the polishing speed of the material to be polished can also be adjusted so as to decrease the polishing speed of the material to be polished.
- the polishing speed of the insulating material can be adjusted, and the polishing speed of silicon oxide can be adjusted.
- the raw material for obtaining the abrasive grains may contain cerium (cerium element) and may contain a cerium compound.
- cerium compound include cerium oxide, cerium hydroxide, ammonium cerium nitrate, cerium acetate, cerium sulfate (e.g., cerium sulfate hydrate), cerium bromate, cerium bromide, cerium chloride, cerium oxalate, cerium nitrate, and cerium carbonate.
- the raw material for obtaining the abrasive grains may contain cerium oxide from the viewpoint of easily adjusting the polishing speed of the material to be polished, or from the viewpoint of easily increasing the polishing speed of the material to be polished (such as the polishing speed of silicon oxide on a patterned wafer; the same applies below).
- the cerium oxide may be CeO 2 (cerium (IV) oxide, ceria) or Ce 2 O 3 (cerium (III) oxide).
- the raw material for obtaining the abrasive grains may be obtained by oxidizing a cerium source containing cerium.
- the oxidation method include a calcination method in which the cerium source is calcined at 600 to 900°C or the like; and a chemical oxidation method in which the cerium source is oxidized using an oxidizing agent such as hydrogen peroxide.
- the raw material for obtaining the abrasive grains may contain cerium oxide derived from the cerium source, or may contain a calcined product of the cerium source.
- a cerium salt or a cerium complex may be used as the cerium source.
- the raw material for obtaining the abrasive grains may contain cerium oxide derived from a cerium salt, or may contain cerium oxide derived from a cerium complex.
- the cerium complex may include a cerium complex of a compound A having a carbon chain (a complex having a ligand of compound A and cerium) from the viewpoint of easily increasing the polishing speed of the material to be polished.
- Compound A may include at least one selected from the group consisting of a carboxy group and a carboxylate group from the viewpoint of easily increasing the polishing speed of the material to be polished.
- the number of carboxy groups or the total number of carboxy groups and carboxylate groups may be 1 to 4, 1 to 3, 2 to 4, 2 to 3, or 3 to 4 from the viewpoint of easily increasing the polishing speed of the material to be polished.
- Compound A may have at least one selected from the group consisting of a linear (acyclic) carbon chain and a cyclic carbon chain, and may have a cyclic carbon chain, from the viewpoint of easily increasing the polishing speed of the material to be polished.
- the cyclic carbon chain may be an alicyclic ring, a heterocyclic ring, or an aromatic ring.
- Compound A may have an aromatic ring from the viewpoint of easily increasing the polishing speed of the material to be polished.
- the cerium complex may include a cerium complex of an aromatic carboxylic acid, a cerium complex of benzenetricarboxylic acid, or a cerium complex of trimesic acid.
- the cerium complex may include a metal organic framework.
- Cerium sources include cerium carbonate (excluding cerium oxycarbonate), cerium oxycarbonate, cerium complex of trimesic acid, cerium acetate, cerium stearate, cerium nitrate, cerium sulfate, cerium oxalate, cerium hydroxide, etc.
- the raw material for obtaining the abrasive grains may contain at least one selected from the group consisting of cerium oxide derived from a cerium complex of trimesic acid (e.g., a calcined product of a cerium complex of trimesic acid), cerium oxide derived from cerium stearate (e.g., a calcined product of cerium stearate), and cerium oxide derived from cerium hydroxide (e.g., a calcined product of cerium hydroxide).
- cerium oxide derived from a cerium complex of trimesic acid e.g., a calcined product of a cerium complex of trimesic acid
- cerium oxide derived from cerium stearate e.g., a calcined product of cerium stearate
- cerium oxide derived from cerium hydroxide e.g., a calcined product of cerium hydroxide
- the raw material for obtaining the abrasive grains may be in an embodiment that contains cerium oxide derived from a cerium complex of trimesic acid, an embodiment that contains cerium oxide derived from cerium stearate, or an embodiment that contains cerium oxide derived from cerium hydroxide.
- abrasive grains obtained using a raw material having a peak top temperature of 300°C or more in the differential curve of a thermogravimetric curve can easily increase the polishing speed of silicon oxide on a patterned wafer, and in particular, can easily increase the polishing speed of silicon oxide in a patterned region having a linear silicon nitride pattern/silicon oxide pattern with a line width of 50 ⁇ m/50 ⁇ m (a patterned region in which linear silicon nitride patterns with a line width of 50 ⁇ m and linear silicon oxide patterns with a line width of 50 ⁇ m are alternately arranged).
- One aspect of the raw material according to this embodiment is a raw material for obtaining abrasive grains, which contains cerium and has a peak top temperature of 300°C or more in the differential curve of a thermogravimetric curve obtained by thermogravimetric analysis of the raw material.
- Such raw material can easily increase the polishing speed of silicon oxide on a patterned wafer, and in particular, can easily increase the polishing speed of silicon oxide in a patterned region having a linear silicon nitride pattern/silicon oxide pattern with a line width of 50 ⁇ m/50 ⁇ m.
- the polishing speed of silicon oxide in a pattern area having a linear silicon nitride pattern/silicon oxide pattern with a line width of 50 ⁇ m/50 ⁇ m can be obtained, for example, at least 13 nm/min (preferably at least 15 nm/min, at least 20 nm/min, at least 25 nm/min, at least 30 nm/min, at least 35 nm/min, etc.).
- the raw material according to this embodiment it is easy to increase the polishing speed of silicon oxide in a pattern area having a linear silicon nitride pattern/silicon oxide pattern with a line width of 20 ⁇ m/80 ⁇ m (a pattern area in which linear silicon nitride patterns with a line width of 20 ⁇ m and linear silicon oxide patterns with a line width of 80 ⁇ m are alternately arranged).
- a polishing speed of silicon oxide of, for example, 25.5 nm/min or more (preferably, 30 nm/min or more, 35 nm/min or more, 40 nm/min or more, 45 nm/min or more, 50 nm/min or more, etc.) in a pattern area having a linear silicon nitride pattern/silicon oxide pattern with a line width of 20 ⁇ m/80 ⁇ m.
- the reasons why a high polishing rate is likely to be obtained due to a high peak top temperature are not limited to the above.
- the peak top temperature of the raw material used to obtain the abrasive grains is high, a reaction field that increases the crystallinity of the abrasive grains obtained using such raw material is more likely to be maintained, making it easier to obtain abrasive grains with fewer oxygen defects.
- the abrasive grains are less likely to break during polishing. Therefore, it is easier to obtain sufficient mechanical polishing power from the abrasive grains, making it easier to obtain a high polishing rate.
- the raw material selection method includes a selection step of selecting a raw material (raw material for obtaining abrasive grains) based on the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw material.
- the raw material may be selected based on whether the peak top temperature is in any of the following ranges (for example, whether the peak top temperature is 300°C or higher).
- the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw material may be in the following ranges.
- the peak top temperature may be 250°C or more, 260°C or more, 270°C or more, 280°C or more, or 290°C or more from the viewpoint of easily adjusting the polishing speed of the material to be polished.
- the peak top temperature may be 300°C or more, 310°C or more, 320°C or more, 330°C or more, 340°C or more, 350°C or more, 360°C or more, or 370°C or more from the viewpoint of easily increasing the polishing speed of the material to be polished (such as the polishing speed of silicon oxide on a patterned wafer).
- the peak top temperature may be 500°C or less, 450°C or less, 400°C or less, 390°C or less, 380°C or less, 370°C or less, 360°C or less, or 350°C or less from the viewpoint of easily adjusting the polishing speed of the material to be polished.
- the peak top temperature may be 250 to 500°C, 300 to 500°C, 350 to 500°C, 250 to 400°C, 300 to 400°C, 350 to 400°C, 250 to 380°C, 300 to 380°C, or 350 to 380°C.
- the peak top temperature in the differential curve of the thermogravimetric curve obtained by thermogravimetric analysis of the raw material can be measured using a thermogravimetric differential thermal analyzer (TG-DTA) under air flow, with a measurement temperature range of 27 to 920°C, and a heating rate of 10°C/min, by the method described in the experimental example below.
- Thermogravimetric analysis can measure the weight change when the raw material is heated.
- the peak top temperature may be the peak top temperature of an exothermic peak or the peak top temperature of an endothermic peak.
- the peak top temperature may be the peak top temperature of a peak associated with a glass transition.
- the peak top temperature can be adjusted by the manufacturing conditions of the raw material for obtaining the abrasive grains.
- the peak top temperature is the peak top temperature of the highest temperature peak (for example, a peak below 500°C).
- the abrasive grains and the manufacturing method thereof according to the present embodiment are abrasive grains containing cerium and a manufacturing method thereof.
- the abrasive grains may be obtained by processing the raw material according to the present embodiment, for example, by crushing the raw material according to the present embodiment.
- the abrasive grains may be obtained by processing the raw material selected by the raw material selection method according to the present embodiment, for example, by crushing the raw material selected by the raw material selection method according to the present embodiment.
- the abrasive grains according to the present embodiment may be abrasive grains obtained by processing the raw material according to the present embodiment (abrasive grains obtained by the manufacturing method of the abrasive grains according to the present embodiment), for example, by crushing the raw material according to the present embodiment.
- the abrasive grains according to the present embodiment may be abrasive grains obtained by processing the raw material selected by the raw material selection method according to the present embodiment, for example, by crushing the raw material selected by the raw material selection method according to the present embodiment.
- the crushed material according to the present embodiment may be a crushed material of the raw material ... a crushed material of the raw material selected by the raw material selection method according to the present embodiment.
- the abrasive grains may contain cerium (cerium element) and may contain a cerium compound.
- the cerium compound include cerium oxide, cerium hydroxide, ammonium cerium nitrate, cerium acetate, cerium sulfate (e.g., cerium sulfate hydrate), cerium bromate, cerium bromide, cerium chloride, cerium oxalate, cerium nitrate, and cerium carbonate.
- the abrasive grains may contain cerium oxide from the viewpoint of easily increasing the polishing rate of the material to be polished.
- the cerium oxide may be CeO2 (cerium (IV) oxide, ceria) or Ce2O3 (cerium (III) oxide).
- the method for manufacturing the abrasive grains according to the present embodiment may include a processing step for processing the raw material according to the present embodiment, for example, a crushing step for obtaining a crushed product by crushing the raw material according to the present embodiment.
- the method for manufacturing the abrasive grains according to the present embodiment may include a processing step for processing the raw material selected by the raw material selection method according to the present embodiment, for example, a crushing step for obtaining a crushed product by crushing the raw material selected by the raw material selection method according to the present embodiment.
- the method for manufacturing the abrasive grains according to the present embodiment may include a classification step for classifying the crushed product after the crushing step. In the classification step, coarse objects (e.g., coarse particles) can be removed.
- the crushing method in the crushing step is not particularly limited, and various crushing methods such as wet crushing and dry crushing can be used.
- the classification method in the classification step is not particularly limited, and examples thereof include centrifugation.
- the polishing liquid according to this embodiment contains the abrasive grains according to this embodiment and water.
- the polishing liquid according to this embodiment may contain, in addition to the abrasive grains and water, components other than the abrasive grains and water (for example, various components described later).
- the multiple-liquid polishing liquid according to this embodiment includes liquid A (first liquid) containing the abrasive grains according to this embodiment and water, and liquid B (second liquid) containing components other than the abrasive grains and water (for example, various components described later) and water.
- Liquid A may contain components other than the abrasive grains and water (for example, various components described later), or may not contain components other than the abrasive grains and water (for example, various components described later).
- the polishing liquid may be obtained by mixing the abrasive grains according to this embodiment (for example, abrasive grains obtained by the method for producing abrasive grains according to this embodiment) with water, and the polishing liquid may be obtained by mixing liquid A and liquid B of the multiple-liquid polishing liquid according to this embodiment with each other.
- Liquid A can be obtained by mixing the abrasive grains according to this embodiment (for example, abrasive grains obtained by the method for producing abrasive grains according to this embodiment) with water.
- Liquid A may be multiple liquids, for example multiple liquids with different types of abrasive grains.
- Liquid B may be multiple liquids, for example multiple liquids with different types of components other than abrasive grains and water.
- the content of abrasive grains may be within the following ranges based on the total mass of the polishing liquid or the total mass of water. From the viewpoint of easily increasing the polishing rate of the material being polished, the content of abrasive grains may be 0.01 mass% or more, 0.05 mass% or more, 0.1 mass% or more, 0.2 mass% or more, 0.3 mass% or more, 0.4 mass% or more, or 0.5 mass% or more.
- the content of the abrasive grains may be 10% by mass or less, 8% by mass or less, 5% by mass or less, 3% by mass or less, 1% by mass or less, 0.8% by mass or less, or 0.5% by mass or less, from the viewpoint of easily suppressing an increase in the viscosity of the polishing liquid, aggregation of the abrasive grains, etc. From these viewpoints, the content of the abrasive grains may be 0.01 to 10% by mass, 0.01 to 5% by mass, 0.01 to 1% by mass, 0.05 to 10% by mass, 0.05 to 5% by mass, 0.05 to 1% by mass, 0.1 to 10% by mass, 0.1 to 5% by mass, or 0.1 to 1% by mass.
- Water may be contained as the remainder after removing other components from the polishing liquid.
- the water content may be in the following ranges based on the total mass of the polishing liquid.
- the water content may be 90 mass% or more, 91 mass% or more, 92 mass% or more, 93 mass% or more, 94 mass% or more, 95 mass% or more, 96 mass% or more, 97 mass% or more, 98 mass% or more, or 99 mass% or more.
- the water content may be less than 100 mass%, 99.9 mass% or less, 99.8 mass% or less, 99.7 mass% or less, 99.6 mass% or less, or 99.5 mass% or less. From these perspectives, the water content may be 90 mass% or more and less than 100 mass%, 95 mass% or more and less than 100 mass%, or 98 mass% or more and less than 100 mass%.
- the polishing liquid according to this embodiment may contain a phosphate compound as necessary.
- the phosphate compound may be used as a dispersant for the abrasive grains.
- As the phosphate compound at least one selected from the group consisting of phosphates and their derivatives (phosphate derivatives) may be used.
- As the hydrogen phosphate compound at least one selected from the group consisting of hydrogen phosphates and their derivatives (hydrogen phosphate derivatives) may be used.
- Phosphate salts include potassium phosphate salts, sodium phosphate salts, ammonium phosphate salts, calcium phosphate salts, etc., and more specifically, tripotassium phosphate, trisodium phosphate, ammonium phosphate, tricalcium phosphate, etc.
- Phosphate derivatives include sodium diphosphate, potassium diphosphate, potassium polyphosphate, ammonium polyphosphate, calcium polyphosphate, etc.
- hydrogen phosphate salts include potassium hydrogen phosphate salts, sodium hydrogen phosphate salts, ammonium hydrogen phosphate salts, and calcium hydrogen phosphate salts, and more specifically, dipotassium hydrogen phosphate, disodium hydrogen phosphate, diammonium hydrogen phosphate, calcium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate, and calcium dihydrogen phosphate.
- hydrogen phosphate salt derivatives include potassium dodecyl hydrogen phosphate, sodium dodecyl hydrogen phosphate, and dodecyl ammonium hydrogen phosphate.
- the polishing liquid according to this embodiment may contain hydrogen phosphate or ammonium dihydrogen phosphate, from the viewpoint of easily increasing the polishing rate of the material to be polished.
- the content of the phosphate compound may be in the following ranges based on the total mass of the polishing liquid or the total mass of water. From the viewpoint of easily increasing the polishing rate of the material to be polished, the content of the phosphate compound may be 0.0001 mass% or more, 0.0005 mass% or more, 0.001 mass% or more, 0.002 mass% or more, 0.003 mass% or more, 0.004 mass% or more, 0.005 mass% or more, 0.008 mass% or more, or 0.01 mass% or more.
- the content of the phosphate compound may be 1 mass% or less, 0.5 mass% or less, 0.1 mass% or less, 0.08 mass% or less, 0.05 mass% or less, 0.04 mass% or less, 0.03 mass% or less, 0.02 mass% or less, or 0.01 mass% or less. From these viewpoints, the content of the phosphate compound may be 0.0001 to 1 mass%, 0.0001 to 0.1 mass%, 0.0001 to 0.05 mass%, 0.001 to 1 mass%, 0.001 to 0.1 mass%, 0.001 to 0.05 mass%, 0.005 to 1 mass%, 0.005 to 0.1 mass%, or 0.005 to 0.05 mass%.
- the content of the phosphate compound may be in the following ranges per 100 parts by mass of abrasive grains. From the viewpoint of easily increasing the polishing rate of the material to be polished, the content of the phosphate compound may be 0.01 parts by mass or more, 0.05 parts by mass or more, 0.1 parts by mass or more, 0.3 parts by mass or more, 0.5 parts by mass or more, 0.8 parts by mass or more, 1 part by mass or more, 1.2 parts by mass or more, 1.5 parts by mass or more, 1.8 parts by mass or more, or 2 parts by mass or more.
- the content of the phosphate compound may be 50 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 8 parts by mass or less, 5 parts by mass or less, 4 parts by mass or less, 3 parts by mass or less, 2.5 parts by mass or less, or 2 parts by mass or less.
- the content of the phosphate compound may be 0.01 to 50 parts by mass, 0.01 to 10 parts by mass, 0.01 to 5 parts by mass, 0.1 to 50 parts by mass, 0.1 to 10 parts by mass, 0.1 to 5 parts by mass, 0.5 to 50 parts by mass, 0.5 to 10 parts by mass, 0.5 to 5 parts by mass, 1 to 50 parts by mass, 1 to 10 parts by mass, or 1 to 5 parts by mass.
- the polishing liquid according to this embodiment may contain a polymer as necessary.
- the polymer include homopolymers (polyacrylic acid, etc.) of unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, etc.; ammonium salts or amine salts of the homopolymers; copolymers of unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, etc.
- alkyl acrylates methyl acrylate, ethyl acrylate, etc.
- hydroxyalkyl acrylates hydroxyethyl acrylate, etc.
- alkyl methacrylates methyl methacrylate, ethyl methacrylate, etc.
- hydroxyalkyl methacrylates hydroxyethyl methacrylate, etc.
- styrene compounds styrene, alkylstyrene, styrenesulfonic acid, etc.
- vinyl acetate and vinyl alcohol
- ammonium salts or amine salts of the copolymers styrene compounds
- the polishing liquid according to this embodiment may contain a copolymer having at least one selected from the group consisting of acrylic acid and methacrylic acid and a styrene compound as monomer units, or a copolymer having styrene and acrylic acid as monomer units (styrene/acrylic acid copolymer).
- the polishing liquid according to this embodiment may contain an acid component (excluding compounds corresponding to phosphate compounds) as necessary.
- acid components include organic acids such as propionic acid and acetic acid (excluding compounds corresponding to amino acids); inorganic acids such as nitric acid, sulfuric acid, hydrochloric acid, phosphoric acid, and boric acid; and amino acids such as glycine.
- the polishing liquid according to this embodiment may contain components other than the abrasive grains, water, phosphate compound, polymer, and acid component according to this embodiment.
- Such components are not particularly limited, but may include abrasive grains that do not contain cerium; basic compounds, etc.
- the pH of the polishing liquid in this embodiment may be in the following ranges from the viewpoint of easily increasing the polishing rate of the material being polished.
- the pH of the polishing liquid may be 1.0 or more, 1.5 or more, 2.0 or more, 2.5 or more, 3.0 or more, 3.5 or more, 4.0 or more, 4.5 or more, 5.0 or more, 5.5 or more, 6.0 or more, 6.5 or more, 7.0 or more, more than 7.0, 7.5 or more, 8.0 or more, or 8.5 or more.
- the pH of the polishing liquid may be 12.0 or less, 11.5 or less, 11.0 or less, 10.5 or less, 10.0 or less, 9.5 or less, or 9.0 or less.
- the pH of the polishing liquid may be 1.0 to 12.0, 1.0 to 10.0, 1.0 to 9.0, 5.0 to 12.0, 5.0 to 10.0, 5.0 to 9.0, 7.0 to 12.0, 7.0 to 10.0, or 7.0 to 9.0.
- the pH of the polishing liquid according to this embodiment can be measured by the method described in the experimental example below.
- the polishing method according to this embodiment includes a polishing step of polishing a member to be polished using the polishing liquid according to this embodiment (for example, the polishing liquid obtained by the manufacturing method of the polishing liquid according to this embodiment).
- the polishing liquid used in the polishing step may be a polishing liquid obtained by mixing liquid A (first liquid) and liquid B (second liquid) of the multiple liquid type polishing liquid according to this embodiment.
- the surface to be polished of the member to be polished can be polished.
- at least a part of the material to be polished in the member to be polished can be polished and removed. Examples of the material to be polished include insulating materials such as silicon oxide and silicon nitride.
- the member to be polished may contain silicon oxide, or may contain silicon oxide and silicon nitride.
- a pattern area in which linear silicon nitride patterns with a line width of 50 ⁇ m and linear silicon oxide patterns with a line width of 50 ⁇ m are alternately arranged may be polished, and a pattern area in which linear silicon nitride patterns with a line width of 20 ⁇ m and linear silicon oxide patterns with a line width of 80 ⁇ m are alternately arranged may be polished.
- the member to be polished is not particularly limited, and may be a wafer (e.g., a semiconductor wafer) or a chip (e.g., a semiconductor chip).
- the member to be polished may be a wiring board or a circuit board.
- the component manufacturing method according to the present embodiment includes a component manufacturing step of obtaining a component using a member to be polished by the polishing method according to the present embodiment.
- the component according to the present embodiment is a component obtained by the component manufacturing method according to the present embodiment.
- the component according to the present embodiment is not particularly limited, and may be an electronic component (e.g., a semiconductor component such as a semiconductor package), a wafer (e.g., a semiconductor wafer), or a chip (e.g., a semiconductor chip).
- the electronic component manufacturing method according to the present embodiment obtains an electronic component using a member to be polished by the polishing method according to the present embodiment.
- the semiconductor component manufacturing method according to the present embodiment obtains a semiconductor component (e.g., a semiconductor package) using a member to be polished by the polishing method according to the present embodiment.
- the component manufacturing method according to the present embodiment may include a polishing step of polishing the member to be polished by the polishing method according to the present embodiment before the component manufacturing step.
- the component manufacturing method according to the present embodiment may include, as one aspect of the component manufacturing process, a singulation process for singulating the polished member polished by the polishing method according to the present embodiment.
- the singulation process may be, for example, a process for dicing a wafer (e.g., a semiconductor wafer) polished by the polishing method according to the present embodiment to obtain chips (e.g., semiconductor chips).
- the electronic component manufacturing method according to the present embodiment may include a process for singulating the polished member polished by the polishing method according to the present embodiment to obtain electronic components (e.g., semiconductor components).
- the semiconductor component manufacturing method according to the present embodiment may include a process for singulating the polished member polished by the polishing method according to the present embodiment to obtain semiconductor components (e.g., semiconductor packages).
- the manufacturing method of the component according to the present embodiment may include, as one aspect of the component manufacturing process, a connection process for connecting (e.g., electrically connecting) the polished member polished by the polishing method according to the present embodiment to another connected object.
- the connected object to be connected to the polished member polished by the polishing method according to the present embodiment is not particularly limited, and may be the polished member polished by the polishing method according to the present embodiment, or may be a connected object different from the polished member polished by the polishing method according to the present embodiment.
- the polished member and the connected object may be directly connected (connected in a state where the polished member and the connected object are in contact with each other), or the polished member and the connected object may be connected via another member (such as a conductive member).
- the connection process may be performed before the singulation process, after the singulation process, or before or after the singulation process.
- the connecting step may be a step of connecting the polished surface of the polished member polished by the polishing method according to this embodiment to the connected body, or may be a step of connecting the connecting surface of the polished member polished by the polishing method according to this embodiment to the connecting surface of the connected body.
- the connecting surface of the polished member may be the polished surface polished by the polishing method according to this embodiment.
- the connecting step can obtain a connected body including the polished member and the connected body.
- the connecting step if the connecting surface of the polished member has a metal part, the connected body may be brought into contact with the metal part.
- the connecting step if the connecting surface of the polished member has a metal part and the connecting surface of the connected body has a metal part, the metal parts may be brought into contact with each other.
- the metal part may contain, for example, copper.
- the device according to this embodiment (e.g., an electronic device such as a semiconductor device) comprises a polished member polished by the polishing method according to this embodiment, and at least one selected from the group consisting of the parts according to this embodiment.
- cerium oxide particles The cerium source shown in Table 1 was calcined in an electric furnace at 800° C. in air for 1 hour to obtain cerium oxide particles (ceria particles).
- the cerium complex of trimesic acid was prepared by the following procedure. First, a trimesic acid solution was prepared by adding 34.7 g (165 mmol) of trimesic acid (1,3,5-BTC: 1,3,5-Benzene tricarboxylic acid, manufactured by Tokyo Chemical Industry Co., Ltd.) to 480 mL of a water/ethanol mixed solvent (mass ratio 1:1). In addition, an aqueous cerium nitrate solution was prepared by adding 71.2 g (164 mmol) of cerium nitrate hexahydrate (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) to 20 mL of water.
- mixed solution A After obtaining mixed solution A by adding the above-mentioned aqueous cerium nitrate solution to the above-mentioned trimesic acid solution, mixed solution A was stirred at 25 ° C. and 400 rpm for 5 hours using a magnetic stirrer. After solid content (white precipitate) was generated in mixed solution A, mixed solution A was left to stand for 15 hours. After the solid content was redispersed by stirring the mixed solution A, the mixed solution A was placed in a 50 mL centrifuge tube and centrifuged at 5000 rpm for 5 minutes.
- thermogravimetric differential thermal analyzer (TG-DTA, Hitachi High-Tech Science Corporation, product name: TG/DTA7220) was used to perform a thermogravimetric analysis of approximately 10 mg of the above-mentioned cerium oxide particles under air flow at a measurement temperature range of 27 to 920°C and a heating rate of 10°C/min, to obtain a differential curve of the thermogravimetric curve. The peak top temperature of the peak in the differential curve was then determined. The results are shown in Table 1.
- the above suspension was subjected to a dispersion process for 30 minutes using an ultrasonic dispersion device (manufactured by SND Co., Ltd., product name "US-105").
- an ultrasonic dispersion device manufactured by SND Co., Ltd., product name "US-105".
- the cerium oxide particles in the above suspension were ground (wet ground) using a bead mill (manufactured by Ashizawa Finetech Co., Ltd., product name: Labostar Mini, model number: DMS65) until the particle size reached approximately 200 nm.
- a classification process was performed using a centrifuge (manufactured by Eppendorf Himac Technologies Co., Ltd., product name: CF-15R) to remove coarse particles in the above-mentioned suspension and to make the particle size uniform to about 150 nm, thereby obtaining an aqueous dispersion of abrasive grains.
- the classification process was performed by placing 50 g of the suspension in a centrifuge tube and centrifuging at 1500 to 3700 min -1 for 5 minutes.
- the above-mentioned aqueous dispersion was diluted with water to obtain a polishing liquid. Based on the total mass of the polishing liquid, the content of abrasive grains was 0.5 mass% and the content of ammonium dihydrogen phosphate was 0.01 mass%.
- the pH of the polishing solution was measured using a compact pH meter (manufactured by Horiba Ltd., product name: LAQUA twin). After two-point calibration of the pH meter using two types of pH buffer solutions (pH 4.01 and pH 6.86) as standard buffer solutions, the pH meter sensor was placed in the polishing solution, and the pH was measured after the pH had stabilized. The liquid temperatures of both the standard buffer solutions and the polishing solution were 25°C. The measurement results are shown in Table 1.
- a patterned wafer was fabricated by the following procedure. First, a product name "8"SEMATECH864" (Stop on Nitride) manufactured by SEMATECH was prepared. This wafer was obtained by forming a SiN film as a stopper film on a part of a silicon substrate having a diameter of 200 mm, etching the silicon substrate of the part without the SiN film by 350 nm to form a recess, and then forming a 600 nm SiO2 film on the stopper film and in the recess by a plasma CVD method.
- a patterned wafer was obtained having a patterned region in which the line width (L/S; unit ⁇ m) of the SiN pattern (Line) and the SiO2 pattern (Space) is 50/50, and a patterned region in which the line width (L/S; unit ⁇ m) of the SiN pattern (Line) and the SiO2 pattern (Space) is 20/80.
- the above-mentioned patterned wafer was attached to a holder for mounting a substrate to which an adsorption pad was attached.
- the holder was placed on a platen to which a polishing pad (Nitta DuPont Co., Ltd., product name: IC1010) was attached, so that the surface to be polished faced the polishing pad.
- the platen was rotated at 120 min -1 , and the holder was rotated together with the platen, thereby performing polishing for 60 seconds.
- the patterned wafer after polishing was thoroughly washed with pure water and then dried.
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Abstract
Description
[1]砥粒を得るための原料の選定方法であって、前記原料がセリウムを含み、前記原料を熱重量分析して得られる熱重量曲線の微分曲線におけるピークトップ温度に基づき前記原料を選定する、原料の選定方法。
[2]前記原料がセリウム酸化物を含む、[1]に記載の原料の選定方法。
[3]砥粒を得るための原料であって、セリウムを含み、前記原料を熱重量分析して得られる熱重量曲線の微分曲線におけるピークトップ温度が300℃以上である、原料。
[4]セリウム酸化物を含む、[3]に記載の原料。
[5]トリメシン酸のセリウム錯体由来のセリウム酸化物を含む、[3]又は[4]に記載の原料。
[6]ステアリン酸セリウム由来のセリウム酸化物を含む、[3]~[5]のいずれか一つに記載の原料。
[7]水酸化セリウム由来のセリウム酸化物を含む、[3]~[6]のいずれか一つに記載の原料。
[8][1]又は[2]に記載の原料の選定方法により選定された原料、又は、[3]~[7]のいずれか一つに記載の原料を粉砕する、砥粒の製造方法。
[9][8]に記載の砥粒の製造方法により得られた砥粒と、水と、を混合する、研磨液の製造方法。
[10][9]に記載の研磨液の製造方法により得られた研磨液を用いて被研磨部材を研磨する、研磨方法。
[11]前記被研磨部材が酸化ケイ素を含む、[10]に記載の研磨方法。
[12][10]又は[11]に記載の研磨方法により研磨された被研磨部材を用いて部品を得る、部品の製造方法。
[13][10]又は[11]に記載の研磨方法により研磨された被研磨部材を用いて半導体部品を得る、半導体部品の製造方法。
電気炉を用いて表1のセリウム源を800℃、空気下で1時間焼成することによりセリウム酸化物粒子(セリア粒子)を得た。
上述のセリウム酸化物粒子と、リン酸二水素アンモニウムと、水とを混合することにより懸濁液を得た。セリウム酸化物粒子の含有量は、懸濁液の全質量を基準として5質量%であり、リン酸二水素アンモニウムの含有量は、セリウム酸化物粒子100質量部に対して2質量部であった。
パターンウエハ(PTW)を次の手順で作製した。まず、SEMATECH製の商品名「8” SEMATECH864」(Stop on Nitride)を準備した。このウエハは、直径200mmのシリコン基板上の一部にストッパ膜としてSiN膜を形成すると共に、SiN膜の無い部分のシリコン基板を350nmエッチングして凹部を形成し、次いで、プラズマCVD法で600nmのSiO2膜をストッパ膜上及び凹部内に成膜して得られたウエハである。次に、このウエハを20mm×20mmに切り抜くことにより、SiNパターン(Line)及びSiO2パターン(Space)の線幅(L/S;単位μm)が50/50であるパターン領域、並びに、SiNパターン(Line)及びSiO2パターン(Space)の線幅(L/S;単位μm)が20/80であるパターン領域を有するパターンウエハを得た。
Claims (13)
- 砥粒を得るための原料の選定方法であって、
前記原料がセリウムを含み、
前記原料を熱重量分析して得られる熱重量曲線の微分曲線におけるピークトップ温度に基づき前記原料を選定する、原料の選定方法。 - 前記原料がセリウム酸化物を含む、請求項1に記載の原料の選定方法。
- 砥粒を得るための原料であって、
セリウムを含み、
前記原料を熱重量分析して得られる熱重量曲線の微分曲線におけるピークトップ温度が300℃以上である、原料。 - セリウム酸化物を含む、請求項3に記載の原料。
- トリメシン酸のセリウム錯体由来のセリウム酸化物を含む、請求項3に記載の原料。
- ステアリン酸セリウム由来のセリウム酸化物を含む、請求項3に記載の原料。
- 水酸化セリウム由来のセリウム酸化物を含む、請求項3に記載の原料。
- 請求項1又は2に記載の原料の選定方法により選定された原料、又は、請求項3~7のいずれか一項に記載の原料を粉砕する、砥粒の製造方法。
- 請求項8に記載の砥粒の製造方法により得られた砥粒と、水と、を混合する、研磨液の製造方法。
- 請求項9に記載の研磨液の製造方法により得られた研磨液を用いて被研磨部材を研磨する、研磨方法。
- 前記被研磨部材が酸化ケイ素を含む、請求項10に記載の研磨方法。
- 請求項10に記載の研磨方法により研磨された被研磨部材を用いて部品を得る、部品の製造方法。
- 請求項10に記載の研磨方法により研磨された被研磨部材を用いて半導体部品を得る、半導体部品の製造方法。
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| JP2024552822A JPWO2024089923A1 (ja) | 2022-10-27 | 2023-05-09 | |
| CN202380036999.2A CN119110838A (zh) | 2022-10-27 | 2023-05-09 | 用于获得磨粒的原料及其选择方法、磨粒的制造方法、研磨液的制造方法、研磨方法、零件的制造方法、以及半导体零件的制造方法 |
| KR1020257011403A KR20250093484A (ko) | 2022-10-27 | 2023-05-09 | 지립을 얻기 위한 원료 및 그 선정 방법, 지립의 제조 방법, 연마액의 제조 방법, 연마 방법, 부품의 제조 방법, 및, 반도체 부품의 제조 방법 |
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| PCT/JP2023/017463 Ceased WO2024089919A1 (ja) | 2022-10-27 | 2023-05-09 | 砥粒を得るための原料及びその選定方法、砥粒の製造方法、研磨液の製造方法、研磨方法、部品の製造方法、並びに、半導体部品の製造方法 |
| PCT/JP2023/017465 Ceased WO2024089921A1 (ja) | 2022-10-27 | 2023-05-09 | 砥粒及びその選定方法、研磨液、複数液式研磨液、研磨方法、部品の製造方法、並びに、半導体部品の製造方法 |
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| JP2007154156A (ja) * | 2005-11-09 | 2007-06-21 | Hitachi Chem Co Ltd | 金属酸化物微粒子、研磨材、これを用いる研磨方法及び半導体装置の製造方法 |
| WO2007100093A1 (ja) * | 2006-03-03 | 2007-09-07 | Hitachi Chemical Co., Ltd. | 金属酸化物粒子、これを含む研磨材、この研磨材を用いた基板の研磨方法、及び半導体装置の製造方法 |
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| JP4776518B2 (ja) * | 1997-12-18 | 2011-09-21 | 日立化成工業株式会社 | 研磨剤及びスラリー |
| EP1201607B1 (en) * | 1999-05-28 | 2014-07-30 | Hitachi Chemical Company, Ltd. | Cerium oxide abrasive, method for polishing substrate using the same and method for manufacturing semiconductor device |
| JP2006116617A (ja) * | 2004-10-19 | 2006-05-11 | Hitachi Maxell Ltd | 固定砥粒研削研磨用工具とその製造方法、並びに固定砥粒研削研磨用工具を用いた被研磨体の研磨方法 |
| KR100812052B1 (ko) * | 2005-11-14 | 2008-03-10 | 주식회사 엘지화학 | 탄산세륨 분말, 산화세륨 분말, 그 제조방법, 및 이를포함하는 cmp 슬러리 |
| JP4874022B2 (ja) | 2006-07-19 | 2012-02-08 | ペガサスミシン製造株式会社 | ミシンの針折れ検出装置 |
| JP2010106994A (ja) | 2008-10-31 | 2010-05-13 | Ntn Corp | 流体軸受装置 |
| KR101465600B1 (ko) * | 2012-12-31 | 2014-11-27 | 주식회사 케이씨텍 | 세륨계 연마입자와 이를 포함하는 슬러리 및 그 제조 방법 |
| JP2015120845A (ja) * | 2013-12-24 | 2015-07-02 | 旭硝子株式会社 | 研磨剤の製造方法、研磨方法および半導体集積回路装置の製造方法 |
| CN106915761B (zh) * | 2015-12-28 | 2021-04-30 | 安集微电子科技(上海)股份有限公司 | 一种氧化铈制备方法及其在sti化学机械抛光中的应用 |
| SG11201906571TA (en) * | 2017-01-16 | 2019-08-27 | Jgc Catalysts & Chemicals Ltd | Polishing composition |
| US20210189176A1 (en) * | 2017-09-29 | 2021-06-24 | Hitachi Chemical Company, Ltd. | Polishing solution, polishing solution set, and polishing method |
| WO2022070313A1 (ja) * | 2020-09-30 | 2022-04-07 | 昭和電工マテリアルズ株式会社 | スラリ及び研磨方法 |
-
2023
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- 2023-05-09 US US18/856,368 patent/US20250257252A1/en active Pending
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- 2023-05-09 CN CN202380036913.6A patent/CN119110837A/zh active Pending
- 2023-05-09 WO PCT/JP2023/017464 patent/WO2024089920A1/ja not_active Ceased
- 2023-05-09 KR KR1020257011481A patent/KR20250093485A/ko active Pending
- 2023-05-09 WO PCT/JP2023/017468 patent/WO2024089922A1/ja not_active Ceased
- 2023-05-09 US US18/857,335 patent/US20250257253A1/en active Pending
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- 2023-05-09 US US18/857,697 patent/US20250263594A1/en active Pending
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- 2023-05-09 KR KR1020257011483A patent/KR20250096700A/ko active Pending
- 2023-05-09 CN CN202380037318.4A patent/CN119110790A/zh active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007154156A (ja) * | 2005-11-09 | 2007-06-21 | Hitachi Chem Co Ltd | 金属酸化物微粒子、研磨材、これを用いる研磨方法及び半導体装置の製造方法 |
| WO2007100093A1 (ja) * | 2006-03-03 | 2007-09-07 | Hitachi Chemical Co., Ltd. | 金属酸化物粒子、これを含む研磨材、この研磨材を用いた基板の研磨方法、及び半導体装置の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2024089922A1 (ja) | 2024-05-02 |
| WO2024089919A1 (ja) | 2024-05-02 |
| WO2024089920A1 (ja) | 2024-05-02 |
| CN119110838A (zh) | 2024-12-10 |
| US20250257252A1 (en) | 2025-08-14 |
| US20250257253A1 (en) | 2025-08-14 |
| CN119110837A (zh) | 2024-12-10 |
| JPWO2024089919A1 (ja) | 2024-05-02 |
| JPWO2024089921A1 (ja) | 2024-05-02 |
| WO2024089921A1 (ja) | 2024-05-02 |
| KR20250097807A (ko) | 2025-06-30 |
| KR20250096700A (ko) | 2025-06-27 |
| KR20250093485A (ko) | 2025-06-24 |
| JPWO2024089920A1 (ja) | 2024-05-02 |
| CN119110790A (zh) | 2024-12-10 |
| KR20250093486A (ko) | 2025-06-24 |
| US20250263593A1 (en) | 2025-08-21 |
| US20250263594A1 (en) | 2025-08-21 |
| CN119095932A (zh) | 2024-12-06 |
| WO2024089922A1 (ja) | 2024-05-02 |
| KR20250093484A (ko) | 2025-06-24 |
| CN119110791A (zh) | 2024-12-10 |
| JPWO2024089923A1 (ja) | 2024-05-02 |
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