Patents by Inventor Jalal Ashjaee

Jalal Ashjaee 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).

  • Patent number: 7122473
    Abstract: The present invention provides at least one nozzle that sprays a rotating workpiece with an etchant at an edge thereof. The at least one nozzle is located in an upper chamber of a vertically configured processing subsystem that also includes mechanisms for plating, cleaning and drying in upper and lower chambers.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: October 17, 2006
    Assignee: ASM Nutool, Inc.
    Inventors: Jalal Ashjaee, Rimma Volodarsky, Cyprian E. Uzoh, Bulent M. Basol, Homayoun Talieh
  • Patent number: 7059944
    Abstract: An integrated process tool for chemical mechanical processing, cleaning and drying a semiconductor workpiece is provided. The integrated process tool includes a CMP module and a cleaning and drying module. After being processed, the workpiece is transported from the CMP module to the cleaning and drying module using a movable housing. In the cleaning and drying module, a cleaning mechanism is used to clean the workpiece while the workpiece is rotated and held by a support stucture of the movable housing. A drying mechanism of the cleaning and drying module picks up the workpiece from the moveable housing and spin dries it. Throughout the CMP process, cleaning and drying, the processed surface of the wafer faces down.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: June 13, 2006
    Assignee: ASM Nutool, Inc.
    Inventors: Jalal Ashjaee, Boris Govzman, Bernard M. Frey, Boguslaw A. Nagorski, Douglas W. Young, Bulent M. Basol, Homayoun Talieh
  • Publication number: 20060035569
    Abstract: An integrated system for processing a plurality of wafers, having a conductive front surface, is provided. The system includes a plurality of processing subsystems for depositing on or removing metal from the front surfaces of the wafers. Each processing subsystem includes a process chamber and a cleaning chamber. The system also has a wafer handling subsystem for transporting each of the wafers into or out of the appropriate one of the plurality of processing subsystems. The plurality of processing subsystems and wafer handling subsystem form an integrated system.
    Type: Application
    Filed: October 11, 2005
    Publication date: February 16, 2006
    Inventors: Jalal Ashjaee, Homayoun Talieh
  • Patent number: 6988932
    Abstract: The present invention provides a wafer carrier that includes an opening, which in one embodiment is a plurality of holes, disposed along the periphery of the wafer carrier. A gas emitted through the holes onto a peripheral back edge of the wafer assists in preventing the processing liquids and contaminants resulting therefrom from reaching the inner region of the base and the backside inner region of the wafer. In another embodiment, a plurality of concentric sealing members are used to prove a better seal, and the outer seal is preferably independently movable to allow cleaning of a peripheral backside of the wafer to occur while the wafer is still attached to the wafer carrier.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: January 24, 2006
    Assignee: ASM Nutool, Inc.
    Inventors: Jalal Ashjaee, Homayoun Talieh, Bulent Basol, Konstantin Volodarsky
  • Patent number: 6953392
    Abstract: An integrated system for processing a plurality of wafers, having a conductive front surface, is provided. The system includes a plurality of processing subsystems for depositing on or removing metal from the front surfaces of the wafers. Each processing subsystem includes a process chamber and a cleaning chamber. The system also has a wafer handling subsystem for transporting each of the wafers into or out of the appropriate one of the plurality of processing subsystems. The plurality of processing subsystems and wafer handling subsystem form an integrated system.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: October 11, 2005
    Assignee: ASM Nutool, Inc.
    Inventors: Jalal Ashjaee, Homayoun Talieh
  • Patent number: 6939206
    Abstract: The present invention provides a wafer carrier that includes a plurality of concentric sealing members that provide a seal, with the outer seal independently movable to allow cleaning of a peripheral backside of the wafer to occur while the wafer is still attached to the wafer carrier, and a plurality of vacuum openings that a re disposed only adjacent to an inner side of the inner seal at a location corresponding to the backside periphery of the wafer.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: September 6, 2005
    Assignee: ASM Nutool, Inc.
    Inventors: Jalal Ashjaee, Homayoun Talieh, Bulent M. Basol, Konstantin Volodarsky
  • Patent number: 6932679
    Abstract: The present invention includes a polishing pad or belt secured to a mechanism that allows the pad or belt to move in a reciprocating manner, i.e. in both forward and reverse directions, at high speeds. The constant bidirectional movement of the polishing pad or belt as it polishes the wafer provides superior planarity and uniformity across the wafer surface. When a fresh portion of the pad is required, the pad is moved through a drive system containing rollers, such that the rollers only touch a back side of the pad, thereby minimizing sources of friction other than the wafer that is being polished from the polishing side of the pad, and maximizing the lifetime of the polishing pad.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: August 23, 2005
    Assignee: ASM Nutool, Inc.
    Inventors: Homayoun Talieh, Konstantin Volodarsky, Jalal Ashjaee, Douglas W. Young
  • Publication number: 20050159084
    Abstract: A material removal apparatus employing a showerhead with non-planar topography is provided. The showerhead surface includes a plurality of fluid zones to apply a fluid pressure to a backside of a polishing pad while a front side of the polishing-pad polishes a substrate. The varying topography of the showerhead surface and the resulting variable gap between a backside of a polishing pad and the non-planar surface of showerhead provide a well-defined fluid distribution and pressure profile for each zone. Such well-defined fluid distribution and pressure profiles, in turn, establish well-defined material removal rates on the substrate as the polishing pad polishes the substrate.
    Type: Application
    Filed: January 21, 2004
    Publication date: July 21, 2005
    Inventors: Bulent Basol, Rajeev Bajaj, Jalal Ashjaee
  • Publication number: 20050133379
    Abstract: An apparatus for electropolishing a conductive layer on a wafer using a solution is disclosed. The apparatus comprises an electrode assembly immersed in the solution configured proximate to the conductive layer having a longitudinal dimension extending to at least a periphery of the wafer, the electrode assembly including an elongated contact electrode configured to receive a potential difference, an isolator adjacent the elongated contact electrode, and an elongated process electrode adjacent the isolator configured to receive the potential difference, a voltage supply is configured to supply the potential difference between the contact electrode and the process electrode to electropolish the conductive layer on the wafer.
    Type: Application
    Filed: April 12, 2004
    Publication date: June 23, 2005
    Inventors: Bulent Basol, Jalal Ashjaee, Boris Govzman, Homayoun Talieh, Bernard Frey
  • Publication number: 20050118932
    Abstract: A polishing apparatus for polishing a surface of wafer is provided. The apparatus includes a carrier to hold the workpiece. An array of fluid nozzles are placed across from the surface of the wafer to provide a gap between the nozzles and the surface of the workpiece. A polishing pad positioned within the gap and configured to polish the surface of the workpiece when a fluid is applied from the plurality of nozzles to push the polishing pad to the surface.
    Type: Application
    Filed: July 6, 2004
    Publication date: June 2, 2005
    Inventors: Homayoun Talieh, Jalal Ashjaee, Bulent Basol
  • Publication number: 20050079713
    Abstract: The present invention provides at least one nozzle that sprays a rotating workpiece with an etchant at an edge thereof.
    Type: Application
    Filed: August 16, 2004
    Publication date: April 14, 2005
    Inventors: Jalal Ashjaee, Rimma Volodarsky, Cyprian Uzoh, Bulent Basol, Homayoun Talieh
  • Publication number: 20050034994
    Abstract: Deposition of conductive material on or removal of conductive material from a workpiece frontal side of a semiconductor workpiece is performed by providing an anode having an anode area which is to face the workpiece frontal side, and electrically connecting the workpiece frontal side with at least one electrical contact, outside of the anode area, by pushing the electrical contact and the workpiece frontal side into proximity with each other. A potential is applied between the anode and the electrical contact, and the workpiece is moved with respect to the anode and the electrical contact. Full-face electroplating or electropolishing over the workpiece frontal side surface, in its entirety, is thus permitted.
    Type: Application
    Filed: September 21, 2004
    Publication date: February 17, 2005
    Inventors: Jalal Ashjaee, Boguslaw Nagorski, Bulent Basol, Homayoun Talieh, Cyprian Uzoh
  • Patent number: 6855037
    Abstract: The present invention provides a wafer carrier that includes an opening, which in one embodiment is a plurality of holes, disposed along the periphery of the wafer carrier. A gas emitted through the holes onto a peripheral back edge of the wafer assists in preventing the processing liquids and contaminants resulting therefrom from reaching the inner region of the base and the backside inner region of the wafer. In another embodiment, a plurality of concentric sealing members are used to prove a better seal, and the outer seal is preferably independently movable to allow cleaning of a peripheral backside of the wafer to occur while the wafer is still attached to the wafer carrier.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: February 15, 2005
    Assignee: ASM-Nutool, Inc.
    Inventors: Jalal Ashjaee, Homayoun Talieh, Bulent Basol, Konstantin Volodarsky
  • Patent number: 6852208
    Abstract: Deposition of conductive material on or removal of conductive material from a workpiece frontal side of a semiconductor workpiece is performed by providing an anode having an anode area which is to face the workpiece frontal side, and electrically connecting the workpiece frontal side with at least one electrical contact, outside of the anode area, by pushing the electrical contact and the workpiece frontal side into proximity with each other. A potential is applied between the anode and the electrical contact, and the workpiece is moved with respect to the anode and the electrical contact. Full-face electroplating or electropolishing over the workpiece frontal side surface, in its entirety, is thus permitted.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: February 8, 2005
    Assignee: NuTool, Inc.
    Inventors: Jalal Ashjaee, Boguslaw Nagorski, Bulent M. Basol, Homayoun Talieh, Cyprian Uzoh
  • Publication number: 20040166789
    Abstract: The present invention provides a wafer carrier that includes an opening, which in one embodiment is a plurality of holes, disposed along the periphery of the wafer carrier. A gas emitted through the holes onto a peripheral back edge of the wafer assists in preventing the processing liquids and contaminants resulting therefrom from reaching the inner region of the base and the backside inner region of the wafer. In another embodiment, a plurality of concentric sealing members are used to prove a better seal, and the outer seal is preferably independently movable to allow cleaning of a peripheral backside of the wafer to occur while the wafer is still attached to the wafer carrier.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 26, 2004
    Inventors: Jalal Ashjaee, Homayoun Talieh, Bulent Basol, Konstantin Volodarsky
  • Patent number: 6777338
    Abstract: The present invention provides at least one nozzle that sprays a rotating workpiece with an etchant at an edge thereof. The at least one nozzle is located in an upper chamber of a vertically configured processing subsystem that also includes mechanisms for plating, cleaning and drying in upper and lower chambers.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: August 17, 2004
    Assignee: Nutool, Inc.
    Inventors: Jalal Ashjaee, Rimma Volodarsky, Cyprian E. Uzoh, Bulent M. Basol, Homayoun Talieh
  • Publication number: 20040112760
    Abstract: A carrier head for holding a workpiece during processing of a workpiece surface is provided. The carrier head includes a carrier housing, a base and a pressure member. The base is configured to hold the workpiece and is movable with respect to the carrier housing. The pressure member is between the base and the carrier housing and is configured to induce the base to apply a predetermined force onto the process surface.
    Type: Application
    Filed: September 2, 2003
    Publication date: June 17, 2004
    Inventors: Bulent M. Basol, Jalal Ashjaee, Konstantin Volodarsky
  • Patent number: 6736929
    Abstract: A semiconductor workpiece processing tool includes process modules having a robot loading window and a manual loading window, and a control system for managing a production route defining movement of the workpiece among a number of the process modules. The control system includes a user interface through which an operator can define the production route and recipes to be performed on the workpiece in each of the process modules, a system controller for controlling execution of the production route, a process module controller associated with each of the process modules for controlling the processing of the workpiece in the process module, and a network connecting the control system components. Advantages of the invention include the ability to continue a production route while manually operating a process module. As a result, the tool may continue in operation while selected process module are tested, maintained or otherwise used to process workpieces.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: May 18, 2004
    Assignee: NuTool, Inc.
    Inventors: Srinivasan M. Komandur, Jalal Ashjaee
  • Publication number: 20040089421
    Abstract: A semiconductor workpiece processing tool comprises a plurality of process modules for processing the workpiece, where a number of the process modules include a robot loading window. A control system is included for managing operation of the processing tool including a production route defining movement of the workpiece among a number of the process modules. The control system includes a user interface through which an operator can define the production route and recipes to be performed on the workpiece in each of the process modules, a system controller for controlling execution of the production route, a process module controller associated with each of the process modules for controlling the processing of the workpiece in the process module, and a network connecting the user interface, system controller and each process module controller.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 13, 2004
    Inventors: Srinivasan M. Komandur, Jalal Ashjaee
  • Publication number: 20030166382
    Abstract: An integrated process tool for chemical mechanical processing, cleaning and drying a semiconductor workpiece is provided. The integrated process tool includes a CMP module and a cleaning and drying module. After being processed, the workpiece is transported from the CMP module to the cleaning and drying module using a movable housing. In the cleaning and drying module, a cleaning mechanism is used to clean the workpiece while the workpiece is rotated and held by a support stucture of the movable housing. A drying mechanism of the cleaning and drying module picks up the workpiece from the moveable housing and spin dries it. Throughout the CMP process, cleaning and drying, the processed surface of the wafer faces down.
    Type: Application
    Filed: February 18, 2003
    Publication date: September 4, 2003
    Inventors: Jalal Ashjaee, Boris Govzman, Bernard M. Frey, Boguslaw A. Nagorski, Douglas W. Young, Bulent M. Basol, Homayoun Talieh