Patents by Inventor Bhanwar Singh

Bhanwar Singh 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: 8547521
    Abstract: The subject invention provides systems and methods that monitor and/or control turbulence of an immersion medium. The systems and methods relate to computer controlled techniques that reduce effects of immersion medium flow due to a liquid temperature gradient. According to an aspect of the subject invention, a number of temperature measurements of the immersion medium are obtained, and the temperature measurements are utilized to generate a gradient map of the immersion medium. By way of illustration, the temperature measurements can be made via wireless temperature sensors. The gradient map can be utilized to understand the stability of the immersion medium. According to an aspect of the subject invention, instability identified with the gradient map can be mitigated.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: October 1, 2013
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 8124300
    Abstract: A method of correcting a lithographic mask is disclosed. The method can include detecting a location of the mask that corresponds to a wafer location having a structure that is printed with a larger than desired dimension and reducing a thickness of at least a portion of a mask feature corresponding to the wafer structure to locally increase transmissivity of the mask feature.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: February 28, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Bhanwar Singh, Luigi Capodieci
  • Patent number: 8028531
    Abstract: The present invention provides for a system and method for regulating and monitoring heat dissipation of an integrated circuit by employing a heat regulating device with a thermal structure net work assembly. Each thermal structure can act as a heat conducting pathway for inducing heat into and/or dissipating heat away from the integrated circuit, thus creating a more uniform temperature gradient across the semiconductor body.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: October 4, 2011
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: Khoi A. Phan, Bharath Rangarajan, Bhanwar Singh
  • Patent number: 8007631
    Abstract: A system and method are provided to facilitate dual damascene interconnect integration with two imprint acts. The method provides for creation of a pair of translucent imprint molds containing the dual damascene pattern to be imprinted. The first imprint mold of the pair contains the via features of the dual damascene pattern and the second imprint mold of the pair contains the trench features. The via feature imprint mold is brought into contact with a first imaging layer deposited upon a first transfer layer which is deposited upon a dielectric layer of a substrate. The trench feature imprint mold is brought into contact with a second imaging layer deposited upon a second transfer layer which is deposited upon the first imaging layer of the substrate. When each imaging layer is exposed to a source of illumination, it cures with a structure matching the features of the corresponding imprint mold.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 30, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7875851
    Abstract: The claimed subject matter provides a system and/or a method that facilitates utilizing a resolution enhancement for a circuit feature. A scanning electron microscope component (104, 204, 304, 404) can provide at least one two-dimensional image of the circuit feature. An image analysis engine (106, 206, 306, 406) can analyze the two-dimensional image. An advanced process control (APC) engine (108, 208, 308, 408) can generate at least one instruction for at least one of a feed forward control and a feedback control and a process component (102, 202, 302, 402) can utilize the at least one instruction to minimize an error.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: January 25, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Chris Haidinyak, Jason P. Cain, Bhanwar Singh
  • Patent number: 7799514
    Abstract: Disclosed are methods for eliminating and/or mitigating the formation of footing and/or T-tops in a resist pattern. A substrate with or without an antireflective coating layer may be treated with an acidic composition prior to the formation of a resist layer. The acid treatment prevents the loss of photo generated acid from the resist by either quenching and/or neutralizing the bases, and thereby reduces the formation of footing. The surface of a resist layer which has been irradiated may be treated with an acidic composition prior to post-exposure bake. The acid treatment prevents the loss of photo generated acid from the resist by either compensating for the evaporation and/or neutralization of the bases and thereby prevents the formation of T-tops.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: September 21, 2010
    Assignee: Globalfoundries Inc
    Inventors: Ramkumar Subramanian, Bhanwar Singh, Gilles Amblard
  • Patent number: 7749662
    Abstract: The subject invention provides a system and method for improving the process margin of a lithographic imaging system. The process margin improvement is achieved through the novel placement of discrete assist features and/or the use of forbidden pitches and specific pitch orientations. Novel geometries are utilized, which take advantage of line-end pull back and/or a lack of resolution of pitches perpendicular to an axis of a dipole illumination source. The strategic placement of a series of discrete scatterbar segments on a mask near positions of critical features, such as, for example, contacts, mitigates resist residue that can result from the use of a contiguous scatterbar.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: July 6, 2010
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Itty Matthew, Bhanwar Singh
  • Patent number: 7709373
    Abstract: A system and method are provided to facilitate dual damascene interconnect integration in a single imprint step. The method provides for creation of a translucent imprint mold with three-dimensional features comprising the dual damascene pattern to be imprinted. The imprint mold is brought into contact with a photopolymerizable organosilicon imaging layer deposited upon a transfer layer which is spin coated or otherwise deposited upon a dielectric layer of a substrate. When the photopolymerizable layer is exposed to a source of illumination, it cures with a structure matching the dual damascene pattern of the imprint mold. A halogen breakthrough etch followed by oxygen transfer etch transfer the vias from the imaging layer into the transfer layer. A second halogen breakthrough etch followed by a second oxygen transfer etch transfer the trenches from the imaging layer into the transfer layer. A dielectric etch transfers the pattern from the transfer layer into the dielectric layer.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: May 4, 2010
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Khoi A Phan
  • Publication number: 20090288425
    Abstract: The present invention provides for a system and method for regulating and monitoring heat dissipation of an integrated circuit by employing a heat regulating device with a thermal structure net work assembly. Each thermal structure can act as a heat conducting pathway for inducing heat into and/or dissipating heat away from the integrated circuit, thus creating a more uniform temperature gradient across the semiconductor body.
    Type: Application
    Filed: August 6, 2009
    Publication date: November 26, 2009
    Inventors: Khoi A. Phan, Bharath Rangarajan, Bhanwar Singh
  • Patent number: 7604903
    Abstract: A mask is provided to be used with nanoprint lithography processes to facilitate reproduction of small features required for the production of integrated circuits. A translucent substrate is provided along with one or more three-dimensional features that include one or more vertical sidewalls. An absorbing material is deposited upon one or more of the vertical sidewalls so that light in an incident direction to an upper surface of the substrate will be absorbed by the absorbing material, resulting in light blocking features. One or more horizontal surfaces are formed upon one or more of the three-dimensional features, which allow light rays to exit a lower surface of the substrate unobstructed by the absorbing material.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: October 20, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bhanwar Singh, Srikanteswara Dakshina-Murthy, Khoi A. Phan, Bharath Rangarajan, Ramkumar Subramanian
  • Publication number: 20090144692
    Abstract: A method includes specifying a plurality of optical proximity correction metrology sites on a wafer. Metrology data is collected from at least a subset of the metrology sites. Data values are predicted for the subset of the metrology sites using an optical proximity correction design model. The collected metrology data is compared to the predicted data values to generate an optical proximity correction metric. A problem condition associated with the optical proximity correction design model is identified based on the optical proximity correction metric.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 4, 2009
    Inventors: JASON P. CAIN, Kevin R. Lensing, Bhanwar Singh, Luigi Capodieci, Cyrus E. Tabery
  • Publication number: 20090144686
    Abstract: A method includes generating a layout for an integrated circuit device in accordance with a plurality of layout design rules. A plurality of metrology sites on the layout associated with at least one subset of the layout design rules is identified. A metrology tag associated with each of the metrology sites is generated. At least one metrology recipe for determining a characteristic of the integrated circuit device is generated based on the metrology tags. Metrology data is collected using the at least one metrology recipe. A selected layout design rule in the at least one subset is modified based on the metrology data.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 4, 2009
    Inventors: KEVIN R. LENSING, Jason P. Cain, Bhanwar Singh, Luigi Capodieci, Cyrus E. Tabery
  • Patent number: 7468296
    Abstract: In fabricating an electronic structure, a substrate is provided, and a first barrier layer is provided on the substrate. A germanium thin film diode is provided on the first barrier layer, and a second barrier layer is provided on the germanium thin film diode. A memory device is provided over and connected to the second barrier layer.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: December 23, 2008
    Assignees: Spansion LLC, Advanced Micro Devices Inc.
    Inventors: Ercan Adem, Matthew Buynoski, Robert Chiu, Bryan Choo, Calvin Gabriel, Joong Jeon, David Matsumoto, Jeffrey Shields, Bhanwar Singh, Winny Stockwell, Wen Yu
  • Patent number: 7460922
    Abstract: The disclosed embodiments reduce across-chip performance variation through non-contact electrical metrology. According to a feature is a process control system that includes a component that measures transistor electrical performance in a product wafer. Also included in the system is a mapping component that converts the transistor performance into exposure dose values and a process tool that communicates the exposure dose value to a scanner. The exposure dose value is fed back for optimization of future chip exposures. The disclosed embodiments directly optimize transistor performance, thus controlling an important parameter in many integrated circuits.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: December 2, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bhanwar Singh, Jason Phillip Cain, Harish Kumar Bolla, Iraj Emami
  • Patent number: 7449348
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that facilitate compensating for retrograde feature profiles on an imprint mask. An aspect of the invention generates feedback information that facilitates control of imprint mask feature profile via employing a scatterometry system to detect retrograde feature profiles, and mitigating the retrograde profiles via a spacer etchback procedure.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: November 11, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian, Khoi A. Phan
  • Patent number: 7405032
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that facilitate the reduction of line-edge roughness (LER) during gate formation in an integrated circuit. Systems and methods are disclosed for improving critical dimension (CD) of photoresist lines, comprising a non-lithographic shrink component that facilitates mitigating LER, and a trim etch component that facilitates achieving and/or restoring a target critical dimension.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: July 29, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Gilles Amblard, Srikanteswara Dakshina-Murthy, Bhanwar Singh
  • Patent number: 7384569
    Abstract: Disclosed are photolithographic systems and methods, and more particularly systems and methodologies that enhance imprint mask feature resolution. An aspect generates feedback information that facilitates control of imprint mask feature size and resolution via employing a scatterometry system to detect resolution enhancement need, and decreasing imprint mask feature size and increasing resolution of the imprint mask via a trim etch procedure.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: June 10, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7386162
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that facilitate compensating for imprint mask critical dimension error(s). An aspect of the invention generates feedback information that facilitates control of imprint mask critical dimension via employing a scatterometry system to detect imprint mask critical dimension error, and mitigating the error via a spacer etchback procedure.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: June 10, 2008
    Assignee: Advanced Micro Devices, Inc
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian
  • Patent number: 7381278
    Abstract: Disclosed are immersion lithography methods involving irradiating a first photoresist through a lens and an immersion liquid, the immersion liquid contacting the lens and the first photoresist in a first apparatus; contacting the lens with a supercritical fluid in a second apparatus; and irradiating a second photoresist through the lens and an immersion liquid, the immersion liquid contacting the lens and the second photoresist in the first apparatus.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: June 3, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramkumar Subramanian, Bhanwar Singh, Khoi A Phan, Srikanteswara Dakshina-Murthy
  • Patent number: 7376259
    Abstract: The present invention relates generally to photolithographic systems and methods, and more particularly to systems and methodologies that modify an imprint mask. An aspect of the invention generates feedback information that facilitates control of imprint mask feature height via employing a scatterometry system to detect topography variation and, decreasing imprint mask feature height in order to compensate for topography variation.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: May 20, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanteswara Dakshina-Murthy, Bhanwar Singh, Ramkumar Subramanian