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    • 1. 发明专利
    • Metal film polishing liquid and polishing method
    • 金属膜抛光液和抛光方法
    • JP2014160827A
    • 2014-09-04
    • JP2014046742
    • 2014-03-10
    • Hitachi Chemical Co Ltd日立化成株式会社
    • TANAKA TAKAAKIFUKAZAWA MASATONOBE SHIGERUSAKURADA TAKASHISHINODA TAKASHI
    • H01L21/304B24B37/00C09G1/02C09K3/14
    • H01L21/7684C09G1/02H01L21/3212H01L21/76819
    • PROBLEM TO BE SOLVED: To provide a metal film polishing liquid and a polishing method for improving flatness of a surface to be polished by preventing erosion and seam generation while maintaining a satisfactory polishing speed with respect to an interlayer insulator film.SOLUTION: The metal film polishing liquid contains: abrasive grains; water soluble polymers containing methacrylic acid based polymers for 0.001 to 15 g with respect to a total quantity 100 g of all components in the polishing liquid; at least one kind of oxidized metal melting agent selected from among organic acid, organic acid ester and salt of organic acid; an anticorrosive agent for a metal; at least one kind of organic solvent selected from among glycol mono-ether, alcohols and ether; and water. An weight-average molecular weight of the methacrylic acid based polymers is 3,000 to 100,000 and the methacrylic acid based polymer contains at least one kind selected from among homopolymers of methacrylic acid and copolymers of the methacrylic acid and monomers copolymerizable with the methacrylic acid.
    • 要解决的问题:提供一种金属膜研磨液和抛光方法,用于通过防止侵蚀和接缝产生,同时保持相对于层间绝缘膜的令人满意的抛光速度来提高待抛光表面的平整度。解决方案:金属膜 抛光液含有:磨粒; 含有甲基丙烯酸类聚合物的水溶性聚合物相对于研磨液中的所有组分的总量为0.001〜15g; 选自有机酸,有机酸酯和有机酸盐中的至少一种氧化金属熔融剂; 用于金属的防腐剂; 至少一种选自乙二醇单醚,醇和醚的有机溶剂; 和水。 甲基丙烯酸类聚合物的重均分子量为3,000〜100,000,甲基丙烯酸系聚合物含有选自甲基丙烯酸的均聚物和甲基丙烯酸与可与甲基丙烯酸共聚的单体的共聚物中的至少一种。
    • 2. 发明专利
    • Polishing liquid for cmp and polishing method
    • 抛光液用于CMP和抛光方法
    • JP2014057071A
    • 2014-03-27
    • JP2013194019
    • 2013-09-19
    • Hitachi Chemical Co Ltd日立化成株式会社
    • SHINODA TAKASHITANAKA TAKAAKIKANAMARU MAMIKOAMANOKURA HITOSHI
    • H01L21/304B24B37/00B24B37/04C09G1/02C09K3/14
    • C09K3/1463B24B37/044C09G1/02H01L21/31053H01L21/3212
    • PROBLEM TO BE SOLVED: To provide: a polishing liquid for CMP having good dispersion stability and a high speed in polishing an interlayer insulating film; and a polishing method.SOLUTION: A polishing liquid for CMP contains a medium and colloidal silica particles. The colloidal silica particles satisfy the following conditions: (1) a two-axis average primary particle diameter (R) obtained from images of twenty arbitrarily selected colloidal silica particles observed by a scanning electron microscope is in a range of 35 to 55 nm; (2) a value (S/S) obtained by dividing a specific surface area (S) of the colloidal silica particles measured by a BET method by a calculated specific surface area (S) of a true sphere having the same particle diameter as the two-axis average primary particle diameter (R) is 1.20 or less; and (3) a ratio (association degree: Rs/R) of a secondary particle diameter (Rs) of the colloidal silica particles in the polishing liquid for CMP, measured with a dynamic light scattering particle size distribution analyzer, and the two-axis average primary particle diameter (R) is 1.30 or less.
    • 要解决的问题:提供:用于CMP的抛光液,具有良好的分散稳定性和高速抛光层间绝缘膜; 和抛光方法。解决方案:CMP的抛光液含有介质和胶体二氧化硅颗粒。 胶体二氧化硅粒子满足以下条件:(1)通过扫描电子显微镜观察到的20个任意选择的胶体二氧化硅粒子的图像得到的2轴平均一次粒径(R)在35〜55nm的范围内, (2)通过将通过BET法测定的胶体二氧化硅粒子的比表面积(S)除以与粒径相同的真实球体的计算比表面积(S)得到的值(S / S) 两轴平均一次粒径(R)为1.20以下; 和(3)用动态光散射粒度分布分析仪测定的CMP用研磨液中的胶体二氧化硅粒子的二次粒径(Rs)的比(相关度:Rs / R),双轴 平均一次粒径(R)为1.30以下。
    • 8. 发明专利
    • Polishing solution and substrate polishing method using polishing solution
    • 抛光溶液和抛光方法使用抛光溶液
    • JP2014027146A
    • 2014-02-06
    • JP2012166995
    • 2012-07-27
    • Hitachi Chemical Co Ltd日立化成株式会社
    • YOSHIKAWA SHIGERUTANAKA TAKAAKIOTA MUNEHIROMATSUMOTO TAKAAKIYOSHIKAWA TAKAHIROSHINODA TAKASHI
    • H01L21/304B24B37/00
    • PROBLEM TO BE SOLVED: To provide a polishing solution and a substrate polishing method using the polishing solution, which can improve a polishing speed of a polished film and further improve surface smoothness after polishing in a CMP technique for polishing the polished film formed on a surface of the substrate.SOLUTION: A polishing solution for CMP of pH 4.8-5.2 contains cerium oxide particles, a pH buffer solution, a polymer compound B having a carboxylic acid group or a carboxylate group, and water. The pH buffer solution has an amount of pH change between a liquid concentrate pH and pH after 3 fold dilution of the buffer solution is 0.2 and under and the buffer solution contains acid A having pKa of 4-6, in which a content of the polymer compound B to a total mass of the polishing solution is 0.02 mass% and over and a total of contents of the acid A and the polymer compound B is 0.6 mass% and under with respect to the total mass of the polishing solution.
    • 要解决的问题:提供一种使用抛光液的抛光溶液和基板研磨方法,其可以提高抛光膜的抛光速度,并且在用于抛光形成在表面上的抛光膜的CMP技术中进一步提高抛光后的表面平滑度 的溶液。溶液:pH 4.8-5.2的CMP抛光溶液含有氧化铈颗粒,pH缓冲溶液,具有羧酸基团或羧酸盐基团的高分子化合物B和水。 pH缓冲溶液在缓冲溶液稀释3倍以后在液体浓度pH和pH之间具有一定量的pH值变化,缓冲溶液含有pKa为4-6的酸A,其中聚合物的含量 化合物B相对于研磨液的总质量为0.02质量%以上,酸A和高分子化合物B的总含量为0.6质量%以下。
    • 10. 发明专利
    • Polishing method of substrate
    • 基板抛光方法
    • JP2013045944A
    • 2013-03-04
    • JP2011183627
    • 2011-08-25
    • Hitachi Chemical Co Ltd日立化成株式会社
    • OTA MUNEHIROYOSHIKAWA SHIGERUTANAKA TAKAAKITAKIZAWA TOSHIO
    • H01L21/304B24B37/00B24B37/26C09K3/14
    • PROBLEM TO BE SOLVED: To provide a polishing method capable of enhancing planarity of the surface after polishing, while maintaining the polishing speed for an inorganic insulating film, in the CMP technique for polishing an inorganic insulating film formed on the surface of a substrate.SOLUTION: In the polishing method of a substrate, at least a part of a polished film provided on the substrate is removed by polishing, by using a CMP polishing liquid containing a cerium oxide, an organic acid having at least one group selected from -COOM group, -Ph-OM group, -SOM group, -OSOH group, -POMgroup, and -POMgroup (In the formula, M is any one kind selected from H, NH, Na, and K, and Ph represents a phenyl group which may have a substituent group), a polymer compound having a carboxyl group, and water, having pH of 4.5-7.0, and containing 0.01-0.30 mass% of polymer compound for total mass, and a polishing pad in which multiple grooves and holes are formed.
    • 要解决的问题:为了提供一种能够在保持无机绝缘膜的抛光速度的同时提高抛光后的表面的平面性的抛光方法,在用于研磨形成在表面上的无机绝缘膜的CMP技术中 基质。 解决方案:在基板的抛光方法中,通过抛光来除去设置在基板上的至少一部分抛光膜,通过使用含有氧化铈的CMP抛光液,选择至少一个基团的有机酸 -COOM基团,-Ph-OM基团,-SO 3组,-OSO 3组,-PO < SB POS =“POST”> 4 M 2 组,而-PO 3 M 2 组(在该式中,M是选自H,NH,SB,...,4,和Na中的任一种,Ph表示苯基, 可以具有取代基,具有羧基的高分子化合物和水,pH为4.5〜7.0,含有0.01-0.30质量%的总质量的高分子化合物,以及研磨垫,其中多个凹槽和孔是 形成。 版权所有(C)2013,JPO&INPIT