摘要:
A polishing slurry for metal comprises an oxidizer, a metal oxide dissolving agent, a metal inhibitor, and water, wherein the metal inhibitor is at least one of a compound having an amino-triazole skeleton and a compound having an imidazole skeleton. The use of the polishing slurry for metal makes it possible to raise the polishing speed sufficiently while keeping the etching speed low, restrain the generation of corrosion of the surface of a metal and dishing, and form a metal-film-buried pattern having a high reliability in the process of formation of wiring of semiconductor devices.
摘要:
A polishing slurry for metal comprises an oxidizer, a metal oxide dissolving agent, a metal inhibitor, and water, wherein the metal inhibitor is at least one of a compound having an amino-triazole skeleton and a compound having an imidazole skeleton. The use of the polishing slurry for metal makes it possible to raise the polishing speed sufficiently while keeping the etching speed low, restrain the generation of corrosion of the surface of a metal and dishing, and form a metal-film-buried pattern having a high reliability in the process of formation of wiring of semiconductor devices.
摘要:
A polishing slurry for metal comprises an oxidizer, a metal oxide dissolving agent, a metal inhibitor, and water, wherein the metal inhibitor is at least one of a compound having an amino-triazole skeleton and a compound having an imidazole skeleton. The use of the polishing slurry for metal makes it possible to raise the polishing speed sufficiently while keeping the etching speed low, restrain the generation of corrosion of the surface of a metal and dishing, and form a metal-film-buried pattern having a high reliability in the process of formation of wiring of semiconductor devices.
摘要:
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The metal oxide dissolver contains one or more types selected from one or more acids (A-group) selected from acids of which the dissociation constant (pKa) of a first dissociable acid group is less than 3.7 and from which five acids of lactic acid, phthalic acid, fumaric acid, maleic acid and aminoacetic acid are excluded, ammonium salts of the A-group and esters of the A-group, and one or more types selected from one or more acids (B-group) selected from acids of which the dissociation constant (pKa) of a first dissociable acid group is 3.7 or more and the five acids, ammonium salts of the B-group and esters of the B-group. The metal inhibitor contains one or more types selected from the group consisting of aromatic compounds having a triazole skeleton and one or more types selected from the group consisting of aliphatic compounds having a triazole skeleton and compounds having any one of pyrimidine skeleton, imidazole skeleton, guanidine skeleton, thiazole skeleton and pyrazole skeleton. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
摘要:
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
摘要:
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The metal oxide dissolver contains one or more compounds selected from one or more acids (A-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is less than 3.7 and from which five acids of lactic acid, phthalic acid, fumaric acid, maleic acid and aminoacetic acid are excluded, ammonium salts of the A-group and esters of the A-group, and one or more compounds selected from one or more acids (B-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is 3.7 or more and the five acids, ammonium salts of the B-group and esters of the B-group. The metal inhibitor contains one or more types selected from the group consisting of aromatic compounds having a triazole skeleton and one or more types selected from the group consisting of aliphatic compounds having a triazole skeleton and compounds having any one of pyrimidine skeleton, imidazole skeleton, guanidine skeleton, thiazole skeleton and pyrazole skeleton. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
摘要:
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The metal oxide dissolver contains one or more compounds selected from one or more acids (A-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is less than 3.7 and from which five acids of lactic acid, phthalic acid, fumaric acid, maleic acid and aminoacetic acid are excluded, ammonium salts of the A-group and esters of the A-group, and one or more compounds selected from one or more acids (B-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is 3.7 or more and the five acids, ammonium salts of the B-group and esters of the B-group. The metal inhibitor contains one or more types selected from the group consisting of aromatic compounds having a triazole skeleton and one or more types selected from the group consisting of aliphatic compounds having a triazole skeleton and compounds having any one of pyrimidine skeleton, imidazole skeleton, guanidine skeleton, thiazole skeleton and pyrazole skeleton. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
摘要:
A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The metal oxide dissolver contains one or more compounds selected from one or more acids (A-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is less than 3.7 and from which five acids of lactic acid, phthalic acid, fumaric acid, maleic acid and aminoacetic acid are excluded, ammonium salts of the A-group and esters of the A-group, and one or more compounds selected from one or more acids (B-group) selected from acids of which the negative value of the logarithm of the dissociation constant Ka (pKa) of a first dissociable acid group is 3.7 or more and the five acids, ammonium salts of the B-group and esters of the B-group. The metal inhibitor contains one or more types selected from the group consisting of aromatic compounds having a triazole skeleton and one or more types selected from the group consisting of aliphatic compounds having a triazole skeleton and compounds having any one of pyrimidine skeleton, imidazole skeleton, guanidine skeleton, thiazole skeleton and pyrazole skeleton. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
摘要:
A polyimide resin including repeating units represented by formula (1): wherein R is a diamine residue or a diisocyanate residue; m is an integer of 2 to 30; any of silicon atoms bonded to norbornane rings is in exo configuration with respect to the norbornane rings; and any of imide rings bonded to the norbornane rings is in exo configuration with respect to the norbornane rings, and a polyamic acid resin including repeating units represented by formula (2): wherein R is a diamine residue; m is an integer of 2 to 30; any of silicon atoms bonded to norbornane rings is in exo configuration with respect to the norbornane rings; and any of amide groups and carboxyl groups bonded to the norbornane rings is in exo configuration with respect to the norbornane rings. The polyimide resin is soluble in general-purpose solvents, has a good transparency and a high molecular weight, and is excellent in mechanical properties, such as tensile strength and elongation.
摘要:
A process for production of a flexible laminated sheet having one or more laminated bodies each provided with a metal foil formed on one side of a resin film, the process comprising a coating step in which a varnish containing a polyamic acid and a solvent is coated onto the metal foil to form a coated film, a holding step in which the coated film formed on the metal foil is held, a drying step in which at least a portion of the solvent in the varnish is removed to form a layer composed of a resin composition, and a resin film-forming step in which the layer composed of the resin composition is heated to form a resin film containing a polyimide resin. The conditions for each step from the coating step up to the resin film-forming step are adjusted based on a target for the content of metal elements in the resin film.