Patents by Inventor Sanjay Mehta
Sanjay Mehta 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: 20150221676Abstract: A composite spacer structure is formed on vertical sidewalls of a gate structure that is formed straddling a semiconductor fin. In one embodiment, the composite spacer structure includes an inner low-k dielectric material portion and an outer nitride material portion.Type: ApplicationFiled: February 4, 2014Publication date: August 6, 2015Applicant: International Business Machines CorporationInventors: Judson R. Holt, Jinghong Li, Sanjay Mehta, Alexander Reznicek, Dominic J. Schepis
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Patent number: 9054127Abstract: A method including forming a dummy gate on a substrate, wherein the dummy gate includes an oxide, forming a pair of dielectric spacers on opposite sides of the dummy gate, and forming an inter-gate region above the substrate and in contact with at least one of the pair of dielectric spacers, the inter-gate region comprising a protective layer on top of a first oxide layer, wherein the protective layer comprises a material resistant to etching techniques designed to remove oxide. The method may further include removing the dummy gate to leave an opening, and forming a gate within the opening.Type: GrantFiled: July 17, 2014Date of Patent: June 9, 2015Assignee: International Business Machines CorporationInventors: Hemanth Jagannathan, Sanjay Mehta
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Patent number: 9039061Abstract: A method of manufacturing a vehicle frame, includes: forming compatible threads on a first rail composed of a first material and a second rail composed of a second material; forming a pair of locators on the first and second rails, said locators configured to indicate an alignment condition of the first rail and second rail when screwed together; and screwing together the first rail and second rail.Type: GrantFiled: January 25, 2013Date of Patent: May 26, 2015Assignee: Ford Global Technologies, LLCInventors: David Anthony Wagner, Michael M. Azzouz, Eric William Barrett, Xiaoming Chen, John Martin Knittel, Sanjay Mehta, John Joseph Uicker, Jeff A. Wallace
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Patent number: 8927387Abstract: A thin BOX ETSOI device with robust isolation and method of manufacturing. The method includes providing a wafer with at least a pad layer overlying a first semiconductor layer overlying an oxide layer overlying a second semiconductor layer, wherein the first semiconductor layer has a thickness of 10 nm or less. The process continues with etching a shallow trench into the wafer, extending partially into the second semiconductor layer and forming first spacers on the sidewalls of said shallow trench. After spacer formation, the process continues by etching an area directly below and between the first spacers, exposing the underside of the first spacers, forming second spacers covering all exposed portions of the first spacers, wherein the pad oxide layer is removed, and forming a gate structure over the first semiconductor wafer.Type: GrantFiled: April 9, 2012Date of Patent: January 6, 2015Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Bruce B Doris, Balasubramanian S Haran, Sanjay Mehta, Stefan Schmitz
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Publication number: 20150001598Abstract: After formation of a silicon nitride gate spacer and a silicon nitride liner overlying a disposable gate structure, a dielectric material layer is deposited, which includes a dielectric material that is not prone to material loss during subsequent exposure to wet or dry etch chemicals employed to remove disposable gate materials in the disposable gate structure. The dielectric material can be a spin-on dielectric material or can be a dielectric metal oxide material. The dielectric material layer and the silicon nitride liner are planarized to provide a planarized dielectric surface in which the disposable gate materials are physically exposed. Surfaces of the planarized dielectric layer is not recessed relative to surfaces of the silicon nitride layer during removal of the disposable gate materials and prior to formation of replacement gate structures, thereby preventing formation of metallic stringers.Type: ApplicationFiled: September 15, 2014Publication date: January 1, 2015Inventors: Hemanth Jagannathan, Sanjay Mehta
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Patent number: 8912612Abstract: A FinFET structure which includes: silicon fins on a semiconductor substrate, each silicon fin having two sides and a horizontal surface; a gate wrapping around at least one of the silicon fins, the gate having a first surface and an opposing second surface facing the at least one of the silicon fins; a hard mask on a top surface of the gate; a silicon nitride layer formed in each of the first and second surfaces so as to be below and in direct contact with the hard mask on the top surface of the gate; spacers on the gate and in contact with the silicon nitride layer; and epitaxially deposited silicon on the at least one of the silicon fins so as to form a raised source/drain.Type: GrantFiled: August 30, 2013Date of Patent: December 16, 2014Assignee: International Business Machines CorporationInventors: Veeraraghavan S. Basker, Sanjay Mehta, Tenko Yamashita, Chun-Chen Yeh
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Patent number: 8906759Abstract: A method of forming a FinFET structure which includes forming fins on a semiconductor substrate; forming a gate wrapping around at least one of the fins, the gate having a first surface and an opposing second surface facing the fins; depositing a hard mask on a top of the gate; angle implanting nitrogen into the first and second surfaces of the gate so as to form a nitrogen-containing layer in the gate that is below and in direct contact with the hard mask on top of the gate; forming spacers on the gate and in contact with the nitrogen-containing layer; and epitaxially depositing silicon on the at least one fin so as to form a raised source/drain. Also disclosed is a FinFET structure.Type: GrantFiled: February 25, 2013Date of Patent: December 9, 2014Assignee: International Business Machines CorporationInventors: Veeraraghavan S. Basker, Sanjay Mehta, Tenko Yamashita, Chun-Chen Yeh
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Patent number: 8890255Abstract: Techniques are discloses to apply an external stress onto the source/drain semiconductor fin sidewall areas and latch the same onto the semiconductor fin before releasing the sidewalls for subsequent salicidation and contact formation. In particular, selected portions of a semiconductor are subjected to an amorphizing ion implantation which disorients the crystal structure of the selected portions of the semiconductor fins, relative to portions of the semiconductor fin that is beneath a gate stack and encapsulated with various liners. At least one stress liner is formed and then stress memorization occurs by performing a stress latching annealing. During this anneal, recrystallization of the disoriented crystal structure occurs. The at least one stress liner is removed and thereafter merging of the semiconductor fins in the source/drain regions is performed.Type: GrantFiled: March 8, 2013Date of Patent: November 18, 2014Assignee: International Business Machines CorporationInventors: Sivananda K. Kanakasabapathy, Sanjay Mehta, Hemanth Jagannathan
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Publication number: 20140336300Abstract: The invention relates to a composition comprising a polyester, a photoreactive comonomer and a co-reactant, wherein the co-reactant comprises at least one member selected from the group consisting of an unsaturated diol, an unsaturated aliphatic diacid, an unsaturated aromatic diacid, an unsaturated aliphatic ester, an unsaturated aromatic ester, an unsaturated anhydride and mixtures thereof. Other aspects of the present invention include articles produced from these compositions and processes for producing these compositions.Type: ApplicationFiled: July 7, 2011Publication date: November 13, 2014Applicant: INVISTA NORTH AMERICA S.A R.L.Inventors: Simon Paul Bradshaw, Peter John Coleman, Stephen Derek Jenkins, Sanjay Mehta, Lon J. Mathias
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Publication number: 20140327076Abstract: A method including forming a dummy gate on a substrate, wherein the dummy gate includes an oxide, forming a pair of dielectric spacers on opposite sides of the dummy gate, and forming an inter-gate region above the substrate and in contact with at least one of the pair of dielectric spacers, the inter-gate region comprising a protective layer on top of a first oxide layer, wherein the protective layer comprises a material resistant to etching techniques designed to remove oxide. The method may further include removing the dummy gate to leave an opening, and forming a gate within the opening.Type: ApplicationFiled: July 17, 2014Publication date: November 6, 2014Inventors: Hemanth Jagannathan, Sanjay Mehta
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Publication number: 20140319611Abstract: A structure including a first plurality of fins and a second plurality of fins etched from a semiconductor substrate, and a fill material located above the semiconductor substrate and between the first plurality of fins and the second plurality of fins, the fill material does not contact either the first plurality of fins or the second plurality of fins.Type: ApplicationFiled: July 10, 2014Publication date: October 30, 2014Inventors: Balasubramanian S. Haran, Sanjay Mehta, Shom Ponoth, Ravikumar Ramachandran, Stefan Schmitz, Theodorus E. Standaert
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Patent number: 8835237Abstract: A method including forming a dummy gate on a substrate, wherein the dummy gate includes an oxide, forming a pair of dielectric spacers on opposite sides of the dummy gate, and forming an inter-gate region above the substrate and in contact with at least one of the pair of dielectric spacers, the inter-gate region comprising a protective layer on top of a first oxide layer, wherein the protective layer comprises a material resistant to etching techniques designed to remove oxide. The method may further include removing the dummy gate to leave an opening, and forming a gate within the opening.Type: GrantFiled: November 7, 2012Date of Patent: September 16, 2014Assignee: International Business Machines CorporationInventors: Hemanth Jagannathan, Sanjay Mehta
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Patent number: 8829617Abstract: A method including providing a plurality of fins etched from a semiconductor substrate and covered by an oxide layer and a nitride layer, the oxide layer being located between the plurality of fins and the nitride layer, removing a portion of the plurality of fins to form an opening, and forming a dielectric spacer on a sidewall of the opening. The method may also include filling the opening with a fill material, wherein a top surface of the fill material is substantially flush with a top surface of the nitride layer, removing the nitride layer to form a gap between the plurality of fins and the fill material, wherein the fill material has re-entrant geometry extending over the gap, and removing the re-entrant geometry and causing the gap between the plurality of fins and the fill material to widen.Type: GrantFiled: November 30, 2012Date of Patent: September 9, 2014Assignee: International Business Machines CorporationInventors: Balasubramanian S. Haran, Sanjay Mehta, Shom Ponoth, Ravikumar Ramachandran, Stefan Schmitz, Theodorus E. Standaert
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Patent number: 8822137Abstract: An interconnect structure and methods for making the same include sidewall portions of an interlevel dielectric layer. The sidewall portions have a width less than a minimum feature size for a given lithographic technology and the width is formed by a thickness of the interlevel dielectric layer when conformally formed on vertical surfaces of a mandrel. The sidewall portions form spaced-apart openings. Conductive structures fill the spaced-apart openings and are separated by the sidewall portions to form single damascene structures.Type: GrantFiled: August 3, 2011Date of Patent: September 2, 2014Assignee: International Business Machines CorporationInventors: Qinghuang Lin, Sanjay Mehta, Hosadurga Shobha
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Publication number: 20140239420Abstract: A method of forming a FinFET structure which includes forming fins on a semiconductor substrate; forming a gate wrapping around at least one of the fins, the gate having a first surface and an opposing second surface facing the fins; depositing a hard mask on a top of the gate; angle implanting nitrogen into the first and second surfaces of the gate so as to form a nitrogen-containing layer in the gate that is below and in direct contact with the hard mask on top of the gate; forming spacers on the gate and in contact with the nitrogen-containing layer; and epitaxially depositing silicon on the at least one fin so as to form a raised source/drain. Also disclosed is a FinFET structure.Type: ApplicationFiled: February 25, 2013Publication date: August 28, 2014Applicant: International Business Machines CorporationInventors: Veeraraghavan S. Basker, Sanjay Mehta, Tenko Yamashita, Chun-Chen Yeh
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Publication number: 20140239401Abstract: A FinFET structure which includes: silicon fins on a semiconductor substrate, each silicon fin having two sides and a horizontal surface; a gate wrapping around at least one of the silicon fins, the gate having a first surface and an opposing second surface facing the at least one of the silicon fins; a hard mask on a top surface of the gate; a silicon nitride layer formed in each of the first and second surfaces so as to be below and in direct contact with the hard mask on the top surface of the gate; spacers on the gate and in contact with the silicon nitride layer; and epitaxially deposited silicon on the at least one of the silicon fins so as to form a raised source/drain.Type: ApplicationFiled: August 30, 2013Publication date: August 28, 2014Applicant: International Business Machines CorporationInventors: Veeraraghavan S. Basker, Sanjay Mehta, Tenko Yamashita, Chun-Chen Yeh
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Patent number: 8790991Abstract: A shallow trench isolation region is provided in which void formation is substantially or totally eliminated therefrom. The shallow trench isolation mitigates active shorts between two active regions of a semiconductor substrate. The shallow trench isolation region includes a bilayer liner which is present on sidewalls and a bottom wall of a trench that is formed in a semiconductor substrate. The bilayer liner of the present disclosure includes, from bottom to top, a shallow trench isolation liner, e.g., a semiconductor oxide and/or nitride, and a high k liner, e.g., a dielectric material having a dielectric constant that is greater than silicon oxide.Type: GrantFiled: January 21, 2011Date of Patent: July 29, 2014Assignee: International Business Machines CorporationInventors: Jason E. Cummings, Balasubramanian S. Haran, Hemanth Jagannathan, Sanjay Mehta
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Publication number: 20140197226Abstract: A method of manufacturing a vehicle frame assembly, includes: (i) receiving threshold temperature data for an adhesive; (ii) defining an adhesive zone wherein which adhesive will be applied with respect to a first and second vehicle structural member; and (iii) determining a minimum distance a weld can be applied on the first structural member with respect to the adhesive zone based on empirical data.Type: ApplicationFiled: January 17, 2013Publication date: July 17, 2014Applicant: Ford Global Technologies, LLCInventors: Sanjay Mehta, Xiaoming Chen, John Martin Knittel, Jeff A. Wallace
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Publication number: 20140151801Abstract: A method including providing a plurality of fins etched from a semiconductor substrate and covered by an oxide layer and a nitride layer, the oxide layer being located between the plurality of fins and the nitride layer, removing a portion of the plurality of fins to form an opening, and forming a dielectric spacer on a sidewall of the opening. The method may also include filling the opening with a fill material, wherein a top surface of the fill material is substantially flush with a top surface of the nitride layer, removing the nitride layer to form a gap between the plurality of fins and the fill material, wherein the fill material has re-entrant geometry extending over the gap, and removing the re-entrant geometry and causing the gap between the plurality of fins and the fill material to widen.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Balasubramanian S. Haran, Sanjay Mehta, Shom Ponoth, Ravikumar Ramachandran, Stefan Schmitz, Theodorus E. Standaert
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Publication number: 20140124873Abstract: A method including forming a dummy gate on a substrate, wherein the dummy gate includes an oxide, forming a pair of dielectric spacers on opposite sides of the dummy gate, and forming an inter-gate region above the substrate and in contact with at least one of the pair of dielectric spacers, the inter-gate region comprising a protective layer on top of a first oxide layer, wherein the protective layer comprises a material resistant to etching techniques designed to remove oxide. The method may further include removing the dummy gate to leave an opening, and forming a gate within the opening.Type: ApplicationFiled: November 7, 2012Publication date: May 8, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Hemanth Jagannathan, Sanjay Mehta