Patents by Inventor Alok Vaid

Alok Vaid 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: 20170018069
    Abstract: A computerized system and method are provided for use in measuring at least one parameter of interest of a structure. The system comprises a server utility configured for data communication with at least first and second data provider utilities. The server utility receives, from the server provider utilities, measured data comprising first and second measured data pieces of different types indicative of parameters of the same structure; and is capable of processing the first and second measured data pieces for optimizing one or more first parameters values of the structure in one of the first and second measured data pieces by utilizing one or more second parameters values of the structure of the other of said first and second measured data pieces.
    Type: Application
    Filed: October 30, 2014
    Publication date: January 19, 2017
    Inventors: Alok Vaid, Cornel Bozdong, Shay Wolfling, Matthew J. Sendelbach, Jamie Tsai, Cermen Osorio
  • Publication number: 20160239012
    Abstract: Systems and methods for controlling manufacturing processes for microelectronic components are provided. In an exemplary embodiment, a method includes determining a specification range for a desired parameter. The microelectronic component is processed in a manufacturing tool, and a trace data set is recorded during the processing. An estimated trace data parameter is determined with the trace data set, and a first measured value of the microelectronic component is measured in a measurement tool. An estimated desired parameter is determined using the first measured value and the estimated trace data parameter, and the manufacturing process is adjusted when the estimated desired parameter is outside of the specification range.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 18, 2016
    Inventors: Givantha Iddawela, Alok Vaid
  • Patent number: 9330985
    Abstract: Methods and systems are provided for fabricating and measuring features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves fabricating a feature of the semiconductor device structure on a wafer of semiconductor material, determining a hybrid recipe for measuring the feature, configuring a plurality of metrology tools to implement the hybrid recipe, and obtaining a hybrid measurement of the feature in accordance with the hybrid recipe.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 3, 2016
    Assignees: GLOBALFOUNDRIES, INC., INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Alok Vaid, Ned R. Saleh, Matthew J. Sendelbach, Narender N. Rana
  • Publication number: 20160076876
    Abstract: A method and system are presented for use in model-based optical measurements in patterned structures. The method comprises: selecting an optimal optical model for interpretation of optical measured data indicative of optical response of the structure under measurements. The selection of the optimal optical model comprises: creating a complete optical model with floating parameters defining multiple configurations of said complete model including one or more model configurations describing an optical response of the structure under measurements, utilizing the complete model for predicting a reference optical response from the structure and generating corresponding virtual reference data, and using the virtual reference data for selecting the optimal optical model for interpretation of the optical measured data.
    Type: Application
    Filed: September 14, 2015
    Publication date: March 17, 2016
    Inventors: Gilad WAINREB, Etai LITTWIN, Alok VAID, Michael KLOTS, Cornel BOZDOG, Matthew SENDELBACH
  • Patent number: 9281249
    Abstract: Measurement of thickness of layers of a circuit structure is obtained, where the thickness of the layers is measured using an optical critical dimension (OCD) measurement technique, and the layers includes a high-k layer and an interfacial layer. Measurement of thickness of the high-k layer is separately obtained, where the thickness of the high-k layer is measured using a separate measurement technique from the OCD measurement technique. The separate measurement technique provides greater decoupling, as compared to the OCD measurement technique, of a signal for thickness of the high-k layer from a signal for thickness of the interfacial layer of the layers. Characteristics of the circuit structure, such as a thickness of the interfacial layer, are ascertained using, in part, the separately obtained thickness measurement of the high-k layer.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 8, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Alok Vaid, Abner Bello, Sipeng Gu, Lokesh Subramany, Xiang Hu, Akshey Sehgal
  • Publication number: 20150348913
    Abstract: Approaches for providing a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. A previously deposited amorphous carbon layer can be removed from over a mandrel that has been previously formed on a subset of a substrate, such as using a photoresist. A pad hardmask can be formed over the mandrel on the subset of the substrate. This formation results in the subset of the substrate having the pad hardmask covering the mandrel thereon and the remainder of the substrate having the amorphous carbon layer covering the mandrel thereon. This amorphous carbon layer can be removed from over the mandrel on the remainder of the substrate, allowing a set of fins to be formed therein while the amorphous carbon layer keeps the set of fins from being formed in the portion of the substrate that it covers.
    Type: Application
    Filed: August 4, 2015
    Publication date: December 3, 2015
    Applicant: Globalfoundries Inc.
    Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
  • Publication number: 20150340296
    Abstract: Approaches for providing a substrate having a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. Specifically, the FinFET device comprises a finned substrate, and a planar metrology pad formed on the substrate adjacent the fins in a metrology measurement area of the FinFET device. Processing steps include forming a first hardmask over the substrate, forming a photoresist over a portion of the first hardmask in the metrology measurement area of the FinFET device, removing the first hardmask in an area adjacent the metrology measurement area remaining exposed following formation of the photoresist, patterning a set of openings in the substrate to form the set of fins in the FinFET device in the area adjacent the metrology measurement area, depositing an oxide layer over the FinFET device, and planarizing the FinFET device to form the planar metrology pad in the metrology measurement area.
    Type: Application
    Filed: August 3, 2015
    Publication date: November 26, 2015
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
  • Patent number: 9177873
    Abstract: Methods and systems are provided for fabricating and measuring physical features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves obtaining raw measurement data for a wafer of semiconductor material from a metrology tool and adjusting a measurement model utilized by a metrology tool based at least in part on the raw measurement data and a value for a design parameter. The wafer has that value for the design parameter and an attribute of the semiconductor device structure fabricated thereon, wherein the measurement model is utilized by the metrology tool to convert the raw measurement data to a measurement value for the attribute.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 3, 2015
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Alok Vaid, Carsten Hartig, Lokesh Subramany
  • Patent number: 9129905
    Abstract: Approaches for providing a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. A previously deposited amorphous carbon layer can be removed from over a mandrel that has been previously formed on a subset of a substrate, such as using a photoresist. A pad hardmask can be formed over the mandrel on the subset of the substrate. This formation results in the subset of the substrate having the pad hardmask covering the mandrel thereon and the remainder of the substrate having the amorphous carbon layer covering the mandrel thereon. This amorphous carbon layer can be removed from over the mandrel on the remainder of the substrate, allowing a set of fins to be formed therein while the amorphous carbon layer keeps the set of fins from being formed in the portion of the substrate that it covers.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: September 8, 2015
    Assignee: GlobalFoundries Inc.
    Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
  • Patent number: 9121890
    Abstract: Approaches for providing a substrate having a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. Specifically, the FinFET device comprises a finned substrate, and a planar metrology pad formed on the substrate adjacent the fins in a metrology measurement area of the FinFET device. Processing steps include forming a first hardmask over the substrate, forming a photoresist over a portion of the first hardmask in the metrology measurement area of the FinFET device, removing the first hardmask in an area adjacent the metrology measurement area remaining exposed following formation of the photoresist, patterning a set of openings in the substrate to form the set of fins in the FinFET device in the area adjacent the metrology measurement area, depositing an oxide layer over the FinFET device, and planarizing the FinFET device to form the planar metrology pad in the metrology measurement area.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 1, 2015
    Assignee: GlobalFoundries Inc.
    Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
  • Publication number: 20150198435
    Abstract: Measurement of thickness of layers of a circuit structure is obtained, where the thickness of the layers is measured using an optical critical dimension (OCD) measurement technique, and the layers includes a high-k layer and an interfacial layer. Measurement of thickness of the high-k layer is separately obtained, where the thickness of the high-k layer is measured using a separate measurement technique from the OCD measurement technique. The separate measurement technique provides greater decoupling, as compared to the OCD measurement technique, of a signal for thickness of the high-k layer from a signal for thickness of the interfacial layer of the layers. Characteristics of the circuit structure, such as a thickness of the interfacial layer, are ascertained using, in part, the separately obtained thickness measurement of the high-k layer.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 16, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Alok VAID, Abner BELLO, Sipeng GU, Lokesh SUBRAMANY, Xiang HU, Akshey SEHGAL
  • Publication number: 20150123212
    Abstract: Approaches for providing a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. A previously deposited amorphous carbon layer can be removed from over a mandrel that has been previously formed on a subset of a substrate, such as using a photoresist. A pad hardmask can be formed over the mandrel on the subset of the substrate. This formation results in the subset of the substrate having the pad hardmask covering the mandrel thereon and the remainder of the substrate having the amorphous carbon layer covering the mandrel thereon. This amorphous carbon layer can be removed from over the mandrel on the remainder of the substrate, allowing a set of fins to be formed therein while the amorphous carbon layer keeps the set of fins from being formed in the portion of the substrate that it covers.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
  • Publication number: 20150115267
    Abstract: Approaches for providing a substrate having a planar metrology pad adjacent a set of fins of a fin field effect transistor (FinFET) device are disclosed. Specifically, the FinFET device comprises a finned substrate, and a planar metrology pad formed on the substrate adjacent the fins in a metrology measurement area of the FinFET device. Processing steps include forming a first hardmask over the substrate, forming a photoresist over a portion of the first hardmask in the metrology measurement area of the FinFET device, removing the first hardmask in an area adjacent the metrology measurement area remaining exposed following formation of the photoresist, patterning a set of openings in the substrate to form the set of fins in the FinFET device in the area adjacent the metrology measurement area, depositing an oxide layer over the FinFET device, and planarizing the FinFET device to form the planar metrology pad in the metrology measurement area.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
  • Publication number: 20150033201
    Abstract: Methods and systems are provided for fabricating and measuring physical features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves obtaining raw measurement data for a wafer of semiconductor material from a metrology tool and adjusting a measurement model utilized by a metrology tool based at least in part on the raw measurement data and a value for a design parameter. The wafer has that value for the design parameter and an attribute of the semiconductor device structure fabricated thereon, wherein the measurement model is utilized by the metrology tool to convert the raw measurement data to a measurement value for the attribute.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 29, 2015
    Applicant: GLOBALFOUNDRIES, Inc.
    Inventors: Alok Vaid, Carsten Hartig, Lokesh Subramany
  • Patent number: 8892237
    Abstract: Methods and systems are provided for fabricating and measuring physical features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves obtaining a first measurement of a first attribute of the semiconductor device structure from a first metrology tool, obtaining process information pertaining to fabrication of one or more features of the semiconductor device structure by a first processing tool, and determining an adjusted measurement for the first attribute based at least in part on the first measurement in a manner that is influenced by the process information.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 18, 2014
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: Alok Vaid, Carsten Hartig
  • Patent number: 8869081
    Abstract: Various embodiments include computer-implemented methods, computer program products and systems for generating an integrated circuit (IC) library for use in a scatterometry analysis. In some cases, approaches include: obtaining chip design data about at least one IC chip; obtaining user input data about the at least one IC chip; and running an IC library defining program using the chip design data in its original format and the user input data in its original format, the running of the IC library defining program including: determining a process variation for the at least one IC chip based upon the chip design data and the user input data; converting the process variation into shape variation data; and providing the shape variation data in a text format to a scatterometry modeling program for use in the scatterometry analysis.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 21, 2014
    Assignees: International Business Machines Corporation, Global Foundries, Inc.
    Inventors: Nedal Saleh, Alok Vaid
  • Publication number: 20140273299
    Abstract: Methods and systems are provided for fabricating and measuring physical features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves obtaining a first measurement of a first attribute of the semiconductor device structure from a first metrology tool, obtaining process information pertaining to fabrication of one or more features of the semiconductor device structure by a first processing tool, and determining an adjusted measurement for the first attribute based at least in part on the first measurement in a manner that is influenced by the process information.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GLOBALFOUNDRIES, INC.
    Inventors: Alok Vaid, Carsten Hartig
  • Publication number: 20140201693
    Abstract: Various embodiments include computer-implemented methods, computer program products and systems for generating an integrated circuit (IC) library for use in a scatterometry analysis. In some cases, approaches include: obtaining chip design data about at least one IC chip; obtaining user input data about the at least one IC chip; and running an IC library defining program using the chip design data in its original format and the user input data in its original format, the running of the IC library defining program including: determining a process variation for the at least one IC chip based upon the chip design data and the user input data; converting the process variation into shape variation data; and providing the shape variation data in a text format to a scatterometry modeling program for use in the scatterometry analysis.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Applicants: GLOBALFOUNDRIES INC., INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nedal Saleh, Alok Vaid
  • Publication number: 20140073114
    Abstract: Embodiments of the invention relate generally to semiconductor wafer technology and, more particularly, to the use of conformal grounding for active charge screening on wafers during wafer processing and metrology. A first aspect of the invention provides a method of reducing an accumulated surface charge on a semiconductor wafer, the method comprising: grounding a layer of conductive material adjacent a substrate of the wafer; and allowing a mirrored charge substantially equal in magnitude and opposite in sign to the accumulated surface charge to be induced along the conductive material.
    Type: Application
    Filed: November 12, 2013
    Publication date: March 13, 2014
    Applicants: GlobalFoundries Inc., International Business Machines Corporation
    Inventors: Cheng Cen, Steven B. Herschbein, Narender Rana, Nedal R. Saleh, Alok Vaid
  • Publication number: 20130245806
    Abstract: Methods and systems are provided for fabricating and measuring features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves fabricating a feature of the semiconductor device structure on a wafer of semiconductor material, determining a hybrid recipe for measuring the feature, configuring a plurality of metrology tools to implement the hybrid recipe; and obtaining a hybrid measurement of the feature in accordance with the hybrid recipe.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 19, 2013
    Applicants: International Business Machines Corporation, GLOBALFOUNDRIES INC.
    Inventors: Alok Vaid, Ned R. Saleh, Matthew J. Sendelbach, Narender N. Rana