Patents by Inventor Arulkumar Shanmugasundram
Arulkumar Shanmugasundram has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20060246683Abstract: A method is provided that includes (1) receiving information about a substrate processed within a low K dielectric deposition subsystem from an integrated inspection system of the low K dielectric deposition subsystem; (2) determining an etch process to perform within an etch subsystem based at least in part on the information received from the inspection system of the low K dielectric deposition subsystem; and (3) directing the etch subsystem to etch at least one low K dielectric layer on the substrate based on the etch process. Other methods, systems, apparatus, data structures and computer program products are provided.Type: ApplicationFiled: June 21, 2006Publication date: November 2, 2006Inventors: Judon Pan, Michael Armacost, Hoiman Hung, Hongwen Li, Arulkumar Shanmugasundram, Moshe Sarfaty, Dimitris Lymberopoulos, Mehul Naik
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Publication number: 20060174912Abstract: A method and cleaning solution that removes contaminants from a dielectric material and polished surfaces of copper interconnect structures prior to an electroless deposition of a capping layer without substantially adversely affecting the interconnect formed therefrom are disclosed. The cleaning solution includes combinations of a core mixture and sulfuric acid or sulfonic compounds such as sulfonic acids that include methanesulfonic acid. In one embodiment, the core mixture includes a citric acid solution and a pH adjuster such as tetra-methyl ammonium hydroxide or ammonia. One embodiment of the method includes providing a planarized substrate, applying the cleaning solution to the substrate to simultaneously clean at least one metal feature and a dielectric material of the substrate, and depositing the metal capping layer selectively on the at least one metal feature using electroless deposition.Type: ApplicationFiled: February 8, 2005Publication date: August 10, 2006Inventors: Ramin Emami, Timothy Weidman, Sergey Lopatin, Hongbin Fang, Arulkumar Shanmugasundram
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Patent number: 7024268Abstract: Methods and apparatus for feedback controlled polishing. A computer program product for generating feedback for chemical mechanical polishing. The product includes instructions operable to cause a processor to receive monitoring information during a current polishing cycle in which a first polishing process is performed on a substrate that includes a metal layer. The first polishing process clears the metal layer from the substrate during the current polishing cycle. The product includes instructions to calculate a representation of a clearing profile of the first polishing process. The calculation is based on the monitoring information received during the current polishing cycle. The product includes instructions to detect non-uniformity in the representation. The product includes instructions to generate, from the non-uniformity detected, feedback information for improving the uniformity of a clearing profile of the first polishing process for a subsequent polishing cycle.Type: GrantFiled: March 24, 2003Date of Patent: April 4, 2006Assignee: Applied Materials Inc.Inventors: Doyle E. Bennett, Boguslaw A. Swedek, Arulkumar Shanmugasundram
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Publication number: 20060062897Abstract: An apparatus and a method of controlling an electroless deposition process by directing electromagnetic radiation towards the surface of a substrate and detecting the change in intensity of the electromagnetic radiation at one or more wavelengths reflected off features on the surface of the substrate is provided. In one embodiment, the detected end of an electroless deposition process step is measured while the substrate is rotated relative to the detection mechanism. In another embodiment, a detection mechanism, which is proximate to the processing region, directs electromagnetic radiation onto a substrate surface, which is then reflected by features on the substrate surface and is detected by the detection mechanism. In one aspect, the angle of the directed electromagnetic radiation is perpendicular to the surface of the substrate and the shape of the directed electromagnetic radiation spot is substantially circular in shape.Type: ApplicationFiled: January 11, 2005Publication date: March 23, 2006Inventors: Yuping Gu, Manoocher Birang, Arulkumar Shanmugasundram, Dmitry Lubomirsky, Joseph Stevens
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Publication number: 20060033678Abstract: Embodiments of the invention provide a cluster tool configured to deposit a material onto a substrate surface by using one or more electroless, electrochemical plating, CVD and/or ALD processing chambers. In one aspect, a ruthenium-containing catalytic layer is formed. Embodiments of the invention provide a hybrid deposition system configured to deposit a seed layer on a substrate with an electroless process and to subsequently fill interconnect features on the substrate with an ECP cell. Other aspects provide an electroless deposition system configured to deposit a seed layer on a substrate, fill interconnect features on a substrate, or sequentially deposit both a seed layer and fill interconnect features on the substrate. One embodiment provides an electroless deposition system configured to form a capping layer over substrate interconnects. The system includes a vapor dryer for pre- and post-deposition cleaning of substrates as well as a brush box chamber for post-deposition cleaning.Type: ApplicationFiled: July 29, 2005Publication date: February 16, 2006Inventors: Dmitry Lubomirsky, Arulkumar Shanmugasundram, Allen D'Ambra, Timothy Weidman, Eugene Rabinovich, Svetlana Sherman, Manoocher Birang, Yaxin Wang, Michael Yang, Bradley Hansen
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Publication number: 20060003570Abstract: Embodiments of the invention relate to a method and apparatus for forming an electroless capping layer over the copper features of a substrate including one or more vapor drying steps. An embodiment of the method includes vapor drying the substrate; optionally applying a dielectric clean solution to the substrate; optionally applying a metal clean solution to the substrate; forming a capping layer by electroless deposition selectively over exposed metal portions of the substrate; and optionally applying a post-deposition clean solution to the substrate structure. In one example, a vapor drying step may be performed prior to forming the capping layer. In another example, the vapor drying step may be performed after forming the capping layer. In another example, a vapor drying step may be performed prior to applying the dielectric clean solution or applying the metal clean solution. In still another example, a vapor drying step may be performed after applying a post-deposition clean solution.Type: ApplicationFiled: December 2, 2004Publication date: January 5, 2006Inventors: Arulkumar Shanmugasundram, Robert Tolles, Russel Ellwanger
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Publication number: 20050263066Abstract: An electroless deposition system is provided. The system includes a processing mainframe, at least one substrate cleaning station positioned on the mainframe, and an electroless deposition station positioned on the mainframe. The electroless deposition station includes an environmentally controlled processing enclosure, a first processing station configured to clean and activate a surface of a substrate, a second processing station configured to electrolessly deposit a layer onto the surface of the substrate, and a substrate transfer shuttle positioned to transfer substrates between the first and second processing stations. The system also includes a substrate transfer robot positioned on the mainframe and configured to access an interior of the processing enclosure. The system also includes a substrate a fluid delivery system that is configured to deliver a processing fluid by use of a spraying process to a substrate mounted in the processing enclosure.Type: ApplicationFiled: January 26, 2005Publication date: December 1, 2005Inventors: Dmitry Lubomirsky, Arulkumar Shanmugasundram, Russell Ellwanger, Ian Pancham, Ramakrishna Cheboli, Timothy Weidman
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Publication number: 20050260345Abstract: An electroless deposition system and electroless deposition stations are provided. The system includes a processing mainframe, at least one substrate cleaning station positioned on the mainframe, and an electroless deposition station positioned on the mainframe. The electroless deposition station includes an environmentally controlled processing enclosure, a first processing station configured to clean and activate a surface of a substrate, a second processing station configured to electrolessly deposit a layer onto the surface of the substrate, and a substrate shuttle positioned to transfer substrates between the first and second processing stations. The electroless deposition station also includes various fluid delivery and substrate temperature controlling devices to perform a contamination free and uniform electroless deposition process.Type: ApplicationFiled: July 6, 2005Publication date: November 24, 2005Inventors: Dmitry Lubomirsky, Arulkumar Shanmugasundram, Ian Pancham
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Publication number: 20050181226Abstract: A method and apparatus for electrolessly depositing a multilayer film using a fluid processing solution(s) that can clean and then electrolessly deposit a metal films having discrete or varying composition onto a conductive surface using a single processing cell. The process advantageously includes in-situ cleaning step in order to minimize the formation of oxides on the conductive surfaces, by minimizing or preventing the exposure of the conductive surfaces to oxygen (e.g., air) between the cleaning step and an electroless deposition process step(s). In one aspect, the chemical components used in the fluid processing solution(s) are selected so that the interaction of various chemical components will not drastically change the desirable properties of each of the interacting fluids, generate particles in the fluid lines or on the surface of the substrate, and/or generate a significant amount of heat which can damage the hardware or significantly change the electroless process results.Type: ApplicationFiled: January 22, 2005Publication date: August 18, 2005Inventors: Timothy Weidman, Ian Pancham, Dmitry Lubomirsky, Arulkumar Shanmugasundram, Yosef Shacham-Diamand, Farhad Moghadam
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Publication number: 20050170650Abstract: In one embodiment, a method for activating a metal layer prior to depositing a cobalt-containing capping layer is provided which includes exposing the metal layer to an electroless activation solution to deposit a palladium layer on the metal layer and depositing the cobalt-containing capping layer on the palladium layer. The electroless activation solution contains palladium nitrate at a concentration in a range from about 0.01 mM to about 1.0 mM, nitric acid at a concentration in a range from about 0.01 mM to about 3.0 mM and water. In another embodiment, the electroless activation solution contains palladium nitrate at a concentration in a range from about 0.01 mM to about 1.0 mM, methanesulfonic acid at a concentration in a range from about 0.01 mM to about 3.0 mM and water.Type: ApplicationFiled: October 21, 2004Publication date: August 4, 2005Inventors: Hongbin Fang, Ramin Emami, Timothy Weidman, Arulkumar Shanmugasundram, Fang Mei
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Publication number: 20050161338Abstract: In one embodiment, a method for depositing a cobalt-containing capping layer on a metal layer is provided which includes rinsing the metal layer with a deionized water wetting step, depositing a palladium layer on the metal layer by exposing the metal layer to an electroless activation solution comprising a palladium precursor and an acid, and depositing the cobalt-containing capping layer on the palladium layer by exposing the palladium layer to an electroless cobalt-containing solution comprising a cobalt source, a tungsten source, an oxygen scavenger and a surfactant. Ascorbic acid may be used as the oxygen scavenger.Type: ApplicationFiled: October 21, 2004Publication date: July 28, 2005Inventors: Hongbin Fang, Ramin Emami, Timothy Weidman, Arulkumar Shanmugasundram
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Publication number: 20050160990Abstract: An electroless deposition system is provided. The system includes a processing mainframe, at least one substrate cleaning station positioned on the mainframe, and an electroless deposition station positioned on the mainframe. The electroless deposition station includes an environmentally controlled processing enclosure, a first processing station configured to clean and activate a surface of a substrate, a second processing station configured to electrolessly deposit a layer onto the surface of the substrate, and a substrate transfer shuttle positioned to transfer substrates between the first and second processing stations. The system also includes a substrate transfer robot positioned on the mainframe and configured to access an interior of the processing enclosure.Type: ApplicationFiled: November 22, 2004Publication date: July 28, 2005Inventors: Dmitry Lubomirsky, Arulkumar Shanmugasundram, Russell Ellwanger, Ian Pancham, Ramakrishna Cheboli
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Publication number: 20050164497Abstract: Embodiments of the present invention relate to an apparatus and method of annealing substrates in a thermal anneal chamber and/or a plasma anneal chamber before electroless deposition thereover. In one embodiment, annealing in a thermal anneal chamber comprises heating the substrate in a vacuum environment while providing a gas, such as a noble gas, a reducing gas such as hydrogen gas, a non-reducing gas such as nitrogen gas, or combinations thereof. In another embodiment, annealing in a plasma chamber comprises annealing the substrate in a plasma, such as a plasma from an argon gas, helium gas, hydrogen gas, or combinations thereof.Type: ApplicationFiled: September 3, 2004Publication date: July 28, 2005Inventors: Sergey Lopatin, Arulkumar Shanmugasundram, Ramin Emami, Hongbin Fang
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Publication number: 20050101130Abstract: A method for fabricating a capping layer with enhanced barrier resistance to both copper and oxygen diffusion, comprises forming a capping layer on a conductive surface of an interconnect, wherein the capping layer comprises cobalt (Co), tungsten (W), rhenium (Re), and at least one of phosphorus (P) and boron (B). In an embodiment of the invention, forming the capping layer comprises exposing the conductive surface to an electroless capping solution comprising a cobalt source, a tungsten source, a rhenium source, and at least one of a phosphorus source and a boron source, and annealing the capping layer.Type: ApplicationFiled: November 7, 2003Publication date: May 12, 2005Inventors: Sergey Lopatin, Arulkumar Shanmugasundram, Dmitry Lubomirsky, Ian Pancham
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Patent number: 6887124Abstract: The substrate processing system has a factory interface module, a chemical mechanical polisher, a cleaner, a particle monitor and a substrate transfer system disposed as an integrated system. The factory interface module may includes a chamber a storage station located in a chamber of the module to hold a plurality of substrates in a substantially horizontal position. The storage station may hold pad break-in wafers for pad preconditioning and/or monitor wafers for defects monitoring. The particle monitor may have a port coupled to the factory interface module.Type: GrantFiled: May 21, 2002Date of Patent: May 3, 2005Assignee: Applied Materials, Inc.Inventors: Jay D. Pinson, II, Arulkumar Shanmugasundram
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Publication number: 20050088647Abstract: An apparatus and a method of controlling an electroless deposition process by directing electromagnetic radiation towards the surface of a substrate and detecting the change in intensity of the electromagnetic radiation at one or more wavelengths reflected off features on the surface of the substrate. In one embodiment the detected end of an electroless deposition process step is measured while the substrate is moved relative to the detection mechanism. In another embodiment multiple detection points are used to monitor the state of the deposition process across the surface of the substrate. In one embodiment the detection mechanism is immersed in the electroless deposition fluid on the substrate. In one embodiment a controller is used to monitor, store, and/or control the electroless deposition process by use of stored process values, comparison of data collected at different times, and various calculated time dependent data.Type: ApplicationFiled: September 17, 2004Publication date: April 28, 2005Inventors: Arulkumar Shanmugasundram, Manoocher Birang, Ian Pancham, Sergey Lopatin
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Publication number: 20050081785Abstract: Embodiments of the invention generally provide a fluid processing platform. The platform includes a mainframe having a substrate transfer robot, at least one substrate cleaning cell on the mainframe, and at least one processing enclosure. The processing enclosure includes a gas supply positioned in fluid communication with an interior of the processing enclosure, a first fluid processing cell positioned in the enclosure, a first substrate head assembly positioned to support a substrate for processing in the first fluid processing cell, a second fluid processing cell positioned in the enclosure, a second head assembly positioned to support a substrate for processing in the second fluid processing cell, and a substrate shuttle positioned between the first and second fluid processing cells and being configured to transfer substrates between the fluid processing cells and the mainframe robot.Type: ApplicationFiled: October 14, 2004Publication date: April 21, 2005Inventors: Dmitry Lubomirsky, Arulkumar Shanmugasundram, Ian Pancham, Sergey Lopatin
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Publication number: 20050085031Abstract: Embodiments of the invention generally provide compositions of activation-alloy solutions, methods to deposit activation-alloys and electronic devices including activation-alloys and capping layers. In one embodiment, a method for depositing a capping layer for a semiconductor device is provided which includes exposing a conductive layer on a substrate surface to an activation-alloy solution, forming an activation-alloy layer on the conductive layer using the activation-alloy solution, and depositing the capping layer on the activation-alloy layer using an electroless deposition solution.Type: ApplicationFiled: October 15, 2004Publication date: April 21, 2005Inventors: Sergey Lopatin, Arulkumar Shanmugasundram, Yosef Shacham-Diamand, Timothy Weidman, Dmitry Lubomirsky
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Publication number: 20040206623Abstract: Embodiments of the invention generally provide a fluid delivery system for an electrochemical plating platform. The fluid delivery system is configured to supply multiple chemistries to multiple plating cells with minimal bubble formation in the fluid delivery system. The system includes a solution mixing system, a fluid distribution manifold in communication with the solution mixing system, a plurality of fluid conduits in fluid communication with the fluid distribution manifold, and a plurality of fluid tanks, each of the plurality of fluid tanks being in fluid communication with at least one of the plurality of fluid conduits.Type: ApplicationFiled: April 16, 2004Publication date: October 21, 2004Applicant: Applied Materials, Inc.Inventors: Allen L. D'Ambra, Arulkumar Shanmugasundram, Michael X. Yang, Yevgeniy (Eugene) Rabinovich, Dmitry Lubomirsky
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Publication number: 20040016637Abstract: Embodiments of the invention generally provide an electrochemical plating system. The plating system includes a substrate loading station positioned in communication with a mainframe processing platform, at least one substrate plating cell positioned on the mainframe, at least one substrate bevel cleaning cell positioned on the mainframe, and a stacked substrate annealing station positioned in communication with at least one of the mainframe and the loading station, each chamber in the stacked substrate annealing station having a heating plate, a cooling plate, and a substrate transfer robot therein.Type: ApplicationFiled: July 8, 2003Publication date: January 29, 2004Applicant: APPLIED MATERIALS, INC.Inventors: Michael X. Yang, Ming Xi, Russell C. Ellwanger, Eric B. Britcher, Bernardo Donoso, Lily L. Pang, Svetlana Sherman, Henry Ho, Anh N. Nguyen, Alexander N. Lerner, Allen L. D'Ambra, Arulkumar Shanmugasundram, Tetsuya Ishikawa, Yevgeniy Rabinovich, Dmitry Lubomirsky, Yeuk-Fai Edwin Mok, Son T. Nguyen