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    • 4. 发明授权
    • Apparatus and method for electrolytically depositing copper on a semiconductor workpiece
    • 在半导体工件上电沉积铜的装置和方法
    • US06811675B2
    • 2004-11-02
    • US09885232
    • 2001-06-20
    • Linlin Chen
    • Linlin Chen
    • C25D338
    • C25D7/123C23C28/322C23C28/34C25D3/38C25D5/10H01L21/2885H01L21/76843H01L21/76868H01L21/76873H01L21/76877H01L2221/1089H05K3/423
    • This invention employs a novel approach to the copper metallization of a workpiece, such as a semiconductor workpiece. In accordance with the invention, an alkaline electrolytic copper bath is used to electroplate copper onto a seed layer, electroplate copper directly onto a barrier layer material, or enhance an ultra-thin copper seed layer which has been deposited on the barrier layer using a deposition process such as PVD. The resulting copper layer provides an excellent conformal copper coating that fills trenches, vias, and other microstructures in the workpiece. When used for seed layer enhancement, the resulting copper seed layer provide an excellent conformal copper coating that allows the microstructures to be filled with a copper layer having good uniformity using electrochemical deposition techniques. Further, copper layers that are electroplated in the disclosed manner exhibit low sheet resistance and are readily annealed at low temperatures.
    • 本发明采用了对诸如半导体工件的工件的铜金属化的新颖方法。 根据本发明,使用碱性电解铜浴将铜电镀到种子层上,将铜直接电镀到阻挡层材料上,或者使用沉积物增强已经沉积在阻挡层上的超薄铜籽晶层 工艺如PVD。 所得到的铜层提供了一种优异的保形铜涂层,其填充工件中的沟槽,通孔和其它微结构。 当用于种子层增强时,所得到的铜种子层提供了优异的共形铜涂层,其允许使用电化学沉积技术使微结构填充具有良好均匀性的铜层。 此外,以所公开的方式电镀的铜层表现出低的薄层电阻,并且在低温下容易退火。
    • 6. 发明授权
    • Electrodeposition chemistry for filling of apertures with reflective metal
    • US06596151B2
    • 2003-07-22
    • US09935530
    • 2001-08-20
    • Uziel LandauJohn J. D'Urso
    • Uziel LandauJohn J. D'Urso
    • C25D338
    • C25D3/38C25D7/12
    • The present invention provides plating solutions, particularly copper plating solutions, designed to provide uniform coatings on substrates and to provide substantially defect free filling of small features formed on substrates with none or low supporting electrolyte, i.e., which include no acid, low acid, no base, or no conducting salts, and/or high metal ion, e.g., copper, concentration. Defect free filling of features is enhanced by a plating solution containing blends of polyethers (“carrier”) and organic divalent sulfur compounds (“accelerator”), wherein the concentration of the carrier ranges from about 0.1 ppm to about 2500 ppm of the plating solution, and the concentration of the accelerator ranges from about 0.05 ppm to about 1000 ppm of the plating solution. The plating solution is further improved by adding an organic nitrogen compound at a concentration from about 0.01 ppm to about 1000 ppm to improve the filling of vias on a resistive substrate. The organic nitrogen is preferably a substituted thiadiazole, which is used at concentrations from 0.1 ppm to about 50 ppm of the plating solution, or a quartenary nitrogen compound, which is used at concentrations from about 0.01 ppm to about 500 ppm.
    • 7. 发明授权
    • Electrodeposition chemistry for filling apertures with reflective metal
    • 用反射金属填充孔的电沉积化学
    • US06544399B1
    • 2003-04-08
    • US09263653
    • 1999-03-05
    • Uziel LandauJohn J. D'Urso
    • Uziel LandauJohn J. D'Urso
    • C25D338
    • C25D3/38C25D7/12
    • The present invention provides plating solutions, particularly copper plating solutions, designed to provide uniform coatings on substrates and to provide substantially defect free filling of small features formed on substrates with none or low supporting electrolyte, i.e., which include no acid, low acid, no base, or no conducting salts, and/or high metal ion, e.g., copper, concentration. Defect free filling of features is enhanced by a plating solution containing blends of polyethers (“carrier”) and organic divalent sulfur compounds (“accelerator”), wherein the concentration of the carrier ranges from about 0.1 ppm to about 2500 ppm of the plating solution, and the concentration of the accelerator ranges from about 0.05 ppm to about 1000 ppm of the plating solution. The plating solution is further improved by adding an organic nitrogen compound at a concentration from about 0.01 ppm to about 1000 ppm to improve the filling of vias on a resistive substrate. The organic nitrogen is preferably a substituted thiadiazole, which is used at concentrations from 0.1 ppm to about 50 ppm of the plating solution, or a quartenary nitrogen compound, which is used at concentrations from about 0.01 ppm to about 500 ppm.
    • 本发明提供了电镀溶液,特别是镀铜溶液,其设计用于在基底上提供均匀的涂层,并且提供基本上无缺陷的填充形成在基底上的小的特征,其中没有或低的支持电解质,即不包括酸,低酸,无 碱,或不含导电盐,和/或高金属离子,例如铜,浓度。 通过含有聚醚(“载体”)和有机二价硫化合物(“促进剂”)的共混物的电镀溶液增强了特征的无缺陷填充,其中载体的浓度范围为约0.1ppm至约2500ppm的电镀液 ,并且加速器的浓度范围为电镀液的约0.05ppm至约1000ppm。 通过添加浓度为约0.01ppm至约1000ppm的有机氮化合物来进一步改善电镀溶液,以改善电阻基板上的通孔的填充。 有机氮优选为以浓度为约0.01ppm至约500ppm使用的电镀溶液的浓度为0.1ppm至约50ppm或季铵氮化合物的取代噻二唑。
    • 9. 发明授权
    • High speed acid copper plating
    • 高速酸性镀铜
    • US06676823B1
    • 2004-01-13
    • US10100708
    • 2002-03-18
    • George Bokisa
    • George Bokisa
    • C25D338
    • C25D3/38
    • One aspect of the invention relates to an aqueous copper plating bath containing sulfuric acid with a specific ratio to at least one supplemental acid selected from the group consisting of fluoboric acid, alkane sulfonic acids, and alkanol sulfonic acids; a copper salt; chloride ions; and at least one sulfate bath brightener. Another aspect of the invention relates to aqueous copper plating bath containing fluoboric acid and/or an alkane sulfonic acid but no sulfuric acid, copper sulfate, chloride ions, and at least one sulfate bath brightener. Yet another aspect of the invention relates to methods of plating copper from the aforementioned copper plating baths. Still yet another aspect of the invention relates to methods of plating copper at high speed using relatively high current densities.
    • 本发明的一个方面涉及含有与至少一种选自氟硼酸,链烷磺酸和链烷醇磺酸的至少一种补充酸的硫酸的含水铜电镀液; 铜盐; 氯离子; 和至少一种硫酸盐浴增白剂。 本发明的另一方面涉及含有氟硼酸和/或烷烃磺酸但不含硫酸,硫酸铜,氯离子和至少一种硫酸盐浴增白剂的含水铜电镀浴。 本发明的另一方面涉及从上述镀铜浴镀铜的方法。 本发明的另一方面涉及使用相对高的电流密度高速镀铜的方法。