Patents by Inventor Mehran Behdjat

Mehran Behdjat 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).

  • Publication number: 20110089166
    Abstract: The present invention provides apparatus and methods for achieving uniform heating to a substrate during a rapid thermal process. More particularly, the present invention provides apparatus and methods for controlling the temperature of an edge ring supporting a substrate during a rapid thermal process to improve temperature uniformity across the substrate.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 21, 2011
    Inventors: AARON MUIR HUNTER, Bruce E. Adams, Mehran Behdjat, Rajesh S. Ramanujam, Joseph M. Ranish
  • Patent number: 7860379
    Abstract: The present invention provides apparatus and methods for achieving uniform heating to a substrate during a rapid thermal process. More particularly, the present invention provides apparatus and methods for controlling the temperature of an edge ring supporting a substrate during a rapid thermal process to improve temperature uniformity across the substrate.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: December 28, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Aaron Muir Hunter, Bruce E. Adams, Mehran Behdjat, Rajesh S. Ramanujam, Joseph M. Ranish
  • Publication number: 20100122982
    Abstract: Embodiments disclosed herein relate to a large vacuum chamber body that has been welded together. The chamber body may have a high emissivity coating on at least one surface therein. Due to the large size of the chamber body, the chamber body may be formed by welding several pieces together rather than forging the body from a single piece of metal. The pieces may be welded together at a location spaced from the corner of the body, which may be under the greatest stress during evacuation, to ensure that the weld, which may be the weakest point in the body, does not fail. At least one surface of the chamber body may be coated with a high emissivity coating to aid in heat transfer from incoming, heated substrates. The high emissivity coating may increase substrate throughput by lowering the time that may be needed to reduce the substrate temperature.
    Type: Application
    Filed: August 3, 2009
    Publication date: May 20, 2010
    Applicant: APPLIED MATERIALS, INC.
    Inventors: SHINICHI KURITA, Mehran Behdjat, Makoto Inagawa
  • Publication number: 20100054905
    Abstract: The present invention generally includes a load lock chamber for transferring large area substrates into a vacuum processing chamber. The load lock chamber may have one or more separate, environmentally isolated environments. Each processing environment may have a plurality exhaust ports for drawing a vacuum. The exhaust ports may be located at the corners of the processing environment. When a substrate is inserted into the load lock chamber from the factory interface, the environment may need to be evacuated. Due to the exhaust ports located at the corners of the environment, any particles or contaminants that may be present may be pulled to the closest corner and out of the load lock chamber without being pulled across the substrate. Thus, substrate contamination may be reduced.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 4, 2010
    Inventors: MEHRAN BEHDJAT, SHINICHI KURITA, MAKOTO INAGAWA, SUHAIL ANWAR
  • Publication number: 20100050534
    Abstract: Embodiments disclosed herein generally relate to a slit valve door assembly for sealing an opening in a chamber. A slit valve door that is pressed against the chamber to seal the slit valve opening moves with the chamber as the slit valve opening shrinks so that an o-ring pressed between the slit valve door and the chamber may move with the slit valve door and the chamber. Thus, less rubbing of the o-ring against the chamber may occur. With less rubbing, fewer particles may be generated and the o-ring lifetime may be extended. With a longer lifetime for the o-ring, substrate throughput may be increased.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 4, 2010
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Mehran Behdjat, Shinichi Kurita, John M. White, Suhail Anwar, Makoto Inagawa
  • Publication number: 20100011785
    Abstract: Embodiments disclosed herein generally provide a load lock chamber capable of controlling the temperature of the substrate therein. The load lock chamber may have one or more cooling fluid introduction passages that extend across the chamber. Cooling fluid, such as nitrogen gas, may flow through the cooling fluid passage and enter the load lock chamber. The cooling fluid passages may have openings to permit the cooling fluid to exit the passages and enter the load lock chamber. The openings may be arranged to permit a greater amount of cooling fluid to enter the load lock at locations corresponding to the substrate positions that are in contact with an end effector that places the substrate into the load lock chamber. Additionally, the openings may be arranged to permit a greater amount if cooling fluid to enter the load lock chamber in the center of the chamber as compared to the edge of the chamber.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 21, 2010
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Mehran Behdjat, Shinichi Kurita, Makoto Inagawa
  • Publication number: 20090179365
    Abstract: A vacuum chuck and a process chamber equipped with the same are provided. The vacuum chuck assembly comprises a support body, a plurality of protrusions, a plurality of channels, at least one support member supporting the support body, at least one resilient member coupled with the support member, a hollow shaft supporting the support body, at least one electrical connector disposed through the hollow shaft, and an air-cooling apparatus. The support body has a support surface for holding a substrate (such as a wafer) thereon. The protrusions are formed on and project from the support surface for creating a gap between the substrate and the support surface. The channels are formed on the support surface for generating reduced pressure in the gap. The air-cooling apparatus is used for providing air cooling in the vicinity of the electrical connector.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 16, 2009
    Inventors: Alexander N. Lerner, Blake Koelmel, Mehran Behdjat
  • Publication number: 20090155025
    Abstract: A lift pin is provided for manipulating a substrate above a support surface of a substrate support and uniformly transferring heat from the substrate support to the substrate. The lift pin includes a pin shaft. The pin shaft includes a cross-section having at least three equal edges and round corners configured alternatively. A pin head is an end portion of the pin shaft, wherein the pin head has a convex support surface larger than the cross-section of the pin shaft. A flat portion is disposed on a central area of the convex support surface for directly contacting the substrate.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Inventors: ALEXANDER N. LERNER, Mehran Behdjat, Paula Valdivia
  • Publication number: 20080169282
    Abstract: Apparatus and methods for achieving uniform heating or cooling of a substrate during a rapid thermal process are disclosed. More particularly, apparatus and methods for controlling the temperature of an edge ring supporting a substrate and/or a reflector plate during a rapid thermal process to improve temperature uniformity across the substrate are disclosed, which include a thermal mass or plate adjacent the edge ring to heat or cool the edge ring.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 17, 2008
    Inventors: KHURSHED SORABJI, Alexander N. Lerner, Joseph M. Ranish, Aaron M. Hunter, Bruce Adams, Mehran Behdjat, Rajesh S. Ramanujam
  • Publication number: 20080170842
    Abstract: The present invention provides apparatus and methods for achieving uniform heating to a substrate during a rapid thermal process. More particularly, the present invention provides apparatus and methods for controlling the temperature of an edge ring supporting a substrate during a rapid thermal process to improve temperature uniformity across the substrate.
    Type: Application
    Filed: January 15, 2007
    Publication date: July 17, 2008
    Inventors: AARON MUIR HUNTER, Bruce E. Adams, Mehran Behdjat, Rajesh S. Ramanujam, Joseph M. Ranish
  • Publication number: 20070026693
    Abstract: A method and apparatus for oxidizing materials used in semiconductor integrated circuits, for example, for oxidizing silicon to form a dielectric gate. An ozonator is capable of producing a stream of least 70% ozone. The ozone passes into an RTP chamber through a water-cooled injector projecting into the chamber. Other gases such as hydrogen to increase oxidation rate, diluent gas such as nitrogen or O2, enter the chamber through another inlet. The chamber is maintained at a low pressure below 20 Toir and the substrate is advantageously maintained at a temperature less than 800° C. Alternatively, the oxidation may be performed in an LPCVD chamber including a pedestal heater and a showerhead gas injector in opposition to the pedestal.
    Type: Application
    Filed: September 8, 2006
    Publication date: February 1, 2007
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Yoshitaka YOKOTA, Sundar RAMAMURTHY, Vedapuram ACHUTHARAMAN, Cory CZARNIK, Mehran BEHDJAT, Christopher OLSEN
  • Publication number: 20060223315
    Abstract: A method and apparatus for oxidizing materials used in semiconductor integrated circuits, for example, for oxidizing silicon to form a dielectric gate. An ozonator is capable of producing a stream of least 70% ozone. The ozone passes into an RTP chamber through a water-cooled injector projecting into the chamber. Other gases such as hydrogen to increase oxidation rate, diluent gas such as nitrogen or O2, enter the chamber through another inlet. The chamber is maintained at a low pressure below 20 Torr and the substrate is advantageously maintained at a temperature less than 800° C. Alternatively, the oxidation may be performed in an LPCVD chamber including a pedestal heater and a showerhead gas injector in opposition to the pedestal.
    Type: Application
    Filed: April 5, 2005
    Publication date: October 5, 2006
    Inventors: Yoshitaka Yokota, Sundar Ramamurthy, Vedapuram Achutharaman, Cory Czarnik, Mehran Behdjat, Christopher Olsen
  • Publication number: 20050072716
    Abstract: In a first aspect, a first substrate processing system is provided that includes (1) a chamber having a plurality of openings through which a substrate may be transported; (2) a substrate carrier opener coupled to a first one of the plurality of openings; (3) a thermal processing chamber coupled to a second one of the plurality of openings; and (4) a wafer handler contained within the chamber, having a substrate clamping blade and a blade adapted to transport high temperature substrates. Numerous other aspects are provided, as are methods and computer program products in accordance with these and other aspects.
    Type: Application
    Filed: July 13, 2002
    Publication date: April 7, 2005
    Inventors: Efrain Quiles, Mehran Behdjat, Robert Lowrance, Michael Rice, Brent Vopat