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).
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Publication number: 20170018069Abstract: 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: ApplicationFiled: October 30, 2014Publication date: January 19, 2017Inventors: Alok Vaid, Cornel Bozdong, Shay Wolfling, Matthew J. Sendelbach, Jamie Tsai, Cermen Osorio
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Publication number: 20160239012Abstract: 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: ApplicationFiled: February 4, 2016Publication date: August 18, 2016Inventors: Givantha Iddawela, Alok Vaid
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Patent number: 9330985Abstract: 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: GrantFiled: March 13, 2012Date of Patent: May 3, 2016Assignees: GLOBALFOUNDRIES, INC., INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alok Vaid, Ned R. Saleh, Matthew J. Sendelbach, Narender N. Rana
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Publication number: 20160076876Abstract: 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: ApplicationFiled: September 14, 2015Publication date: March 17, 2016Inventors: Gilad WAINREB, Etai LITTWIN, Alok VAID, Michael KLOTS, Cornel BOZDOG, Matthew SENDELBACH
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Patent number: 9281249Abstract: 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: GrantFiled: January 15, 2014Date of Patent: March 8, 2016Assignee: GLOBALFOUNDRIES Inc.Inventors: Alok Vaid, Abner Bello, Sipeng Gu, Lokesh Subramany, Xiang Hu, Akshey Sehgal
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Publication number: 20150348913Abstract: 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: ApplicationFiled: August 4, 2015Publication date: December 3, 2015Applicant: Globalfoundries Inc.Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
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Publication number: 20150340296Abstract: 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: ApplicationFiled: August 3, 2015Publication date: November 26, 2015Applicant: GLOBALFOUNDRIES INC.Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
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Patent number: 9177873Abstract: 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: GrantFiled: July 29, 2013Date of Patent: November 3, 2015Assignee: GLOBALFOUNDRIES, INC.Inventors: Alok Vaid, Carsten Hartig, Lokesh Subramany
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Patent number: 9129905Abstract: 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: GrantFiled: November 4, 2013Date of Patent: September 8, 2015Assignee: GlobalFoundries Inc.Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
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Patent number: 9121890Abstract: 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: GrantFiled: October 30, 2013Date of Patent: September 1, 2015Assignee: GlobalFoundries Inc.Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
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Publication number: 20150198435Abstract: 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: ApplicationFiled: January 15, 2014Publication date: July 16, 2015Applicant: GLOBALFOUNDRIES Inc.Inventors: Alok VAID, Abner BELLO, Sipeng GU, Lokesh SUBRAMANY, Xiang HU, Akshey SEHGAL
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Publication number: 20150123212Abstract: 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: ApplicationFiled: November 4, 2013Publication date: May 7, 2015Applicant: GLOBALFOUNDRIES Inc.Inventors: Xiang Hu, Lokesh Subramany, Alok Vaid, Sipeng Gu, Akshey Sehgal
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Publication number: 20150115267Abstract: 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: ApplicationFiled: October 30, 2013Publication date: April 30, 2015Applicant: GLOBALFOUNDRIES INC.Inventors: Sipeng Gu, Xiang Hu, Alok Vaid, Lokesh Subramany, Akshey Sehgal
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Publication number: 20150033201Abstract: 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: ApplicationFiled: July 29, 2013Publication date: January 29, 2015Applicant: GLOBALFOUNDRIES, Inc.Inventors: Alok Vaid, Carsten Hartig, Lokesh Subramany
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Patent number: 8892237Abstract: 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: GrantFiled: March 15, 2013Date of Patent: November 18, 2014Assignee: GLOBALFOUNDRIES, Inc.Inventors: Alok Vaid, Carsten Hartig
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Patent number: 8869081Abstract: 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: GrantFiled: January 15, 2013Date of Patent: October 21, 2014Assignees: International Business Machines Corporation, Global Foundries, Inc.Inventors: Nedal Saleh, Alok Vaid
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Publication number: 20140273299Abstract: 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: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: GLOBALFOUNDRIES, INC.Inventors: Alok Vaid, Carsten Hartig
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Publication number: 20140201693Abstract: 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: ApplicationFiled: January 15, 2013Publication date: July 17, 2014Applicants: GLOBALFOUNDRIES INC., INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nedal Saleh, Alok Vaid
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Publication number: 20140073114Abstract: 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: ApplicationFiled: November 12, 2013Publication date: March 13, 2014Applicants: GlobalFoundries Inc., International Business Machines CorporationInventors: Cheng Cen, Steven B. Herschbein, Narender Rana, Nedal R. Saleh, Alok Vaid
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Publication number: 20130245806Abstract: 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: ApplicationFiled: March 13, 2012Publication date: September 19, 2013Applicants: International Business Machines Corporation, GLOBALFOUNDRIES INC.Inventors: Alok Vaid, Ned R. Saleh, Matthew J. Sendelbach, Narender N. Rana