Patents by Inventor Dhritiman Subha Kashyap
Dhritiman Subha Kashyap 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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Patent number: 11098404Abstract: Multi-station process chamber lids comprising a plurality of station openings are described. A station separation purge channel is around the station openings. A plurality of angular purge channels separate station openings from adjacent station openings. A lid support beam can compensate for deflection of the chamber lid body.Type: GrantFiled: September 27, 2019Date of Patent: August 24, 2021Assignee: APPLIED MATERIALS, INC.Inventors: Dhritiman Subha Kashyap, Gopu Krishna, Sanjeev Baluja, Michael Rice
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Publication number: 20210111059Abstract: Substrate supports comprising a plurality of bonded plates forming a single component support body and methods of forming the substrate supports are described. The single component support body has an outer peripheral edge, a top surface and a bottom surface. A pocket is formed in the top surface and has a bottom surface, a depth and an outer peripheral edge. A purge ring is spaced a distance from the outer peripheral edge and comprises at least one opening in the top surface in fluid communication with a purge gas line within the body thickness.Type: ApplicationFiled: October 9, 2020Publication date: April 15, 2021Applicant: Applies Materials, Inc.Inventors: Tejas Ulavi, Vijay D. Parkhe, Naveen Kumar Nagaraja, Sanjeev Baluja, Surajit Kumar, Dhritiman Subha Kashyap, Ashutosh Agarwal
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Publication number: 20210111058Abstract: Substrate supports comprising a top plate positioned on a shaft are described. The top plate including a primary heating element a first depth from the surface of the top plate, a inner zone heating element a second depth from the surface of the top plate and an outer zone heating element a third depth from the surface of the top plate. Substrate support assemblies comprising a plurality of substrate supports and methods of processing a substrate are also disclosed.Type: ApplicationFiled: October 9, 2020Publication date: April 15, 2021Applicant: Applied Materials, Inc.Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
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Patent number: 10910243Abstract: A thermal management system comprising a fluid channel with a plurality of parallel first flow paths extending along a first level in a first thermal mass and a plurality of parallel second flow paths extending along a second level in a second thermal mass are described. Methods for controlling the temperature of a substrate or heater surface and fluid manifolds are also described.Type: GrantFiled: August 29, 2019Date of Patent: February 2, 2021Assignee: Applied Materials, Inc.Inventors: Tejas Ulavi, Dhritiman Subha Kashyap, Sanjeev Baluja
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Publication number: 20200392621Abstract: Apparatus and methods to process one or more wafers are described. A processing chamber comprises a first processing station comprising a first gas injector having a first face, a first emissivity and a first temperature, a second processing station comprising a second gas injector having a second face, a second emissivity and a second temperature, and a substrate support assembly comprising a plurality of substantially coplanar support surfaces, the substrate support assembly configured to move the support surfaces between the first processing station and the second processing station. When a wafer is on the support surfaces, a temperature skew of less than about 0.5° C. is developed upon moving the wafer between the stations in about 0.5 seconds.Type: ApplicationFiled: August 25, 2020Publication date: December 17, 2020Applicant: Applied Materials, IncInventors: Joseph AuBuchon, Sanjeev Baluja, Dhritiman Subha Kashyap, Jared Ahmad Lee, Tejas Ulavi, Michael Rice
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Publication number: 20200370180Abstract: Provided are gas distribution apparatus with a showerhead having a front plate and a back plate spaced to form a gas volume, the front plate having an inner surface adjacent the gas volume and an outer surface with a plurality of apertures extending therethrough, the gas volume having a center region and an outer region; a first inlet in fluid communication with the center region of the gas volume, the inlet having an inside and an outside; and a mixer disposed on the inside of the inlet to increase gas flow temperature. Also provided are processing chamber apparatus and methods of depositing a film.Type: ApplicationFiled: May 18, 2020Publication date: November 26, 2020Applicant: Applied Materials, Inc.Inventors: Ashutosh Agarwal, Sanjeev Baluja, Dhritiman Subha Kashyap, Kartik Shah, Yanjun Xia
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Patent number: 10787739Abstract: Apparatus and methods to process one or more wafers are described. A processing chamber comprises a first processing station comprising a first gas injector having a first face, a first emissivity and a first temperature, a second processing station comprising a second gas injector having a second face, a second emissivity and a second temperature, and a substrate support assembly comprising a plurality of substantially coplanar support surfaces, the substrate support assembly configured to move the support surfaces between the first processing station and the second processing station. When a wafer is on the support surfaces, a temperature skew of less than about 0.5° C. is developed upon moving the wafer between the stations in about 0.5 seconds.Type: GrantFiled: October 21, 2019Date of Patent: September 29, 2020Assignee: APPLIED MATERIALS, INC.Inventors: Joseph AuBuchon, Sanjeev Baluja, Dhritiman Subha Kashyap, Jared Ahmad Lee, Tejas Ulavi, Michael Rice
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Publication number: 20200230782Abstract: Embodiments of methods and apparatus for cleaning contaminants from a substrate are disclosed herein. In some embodiments, a substrate cleaning apparatus includes: a substrate support to support a substrate along an edge of the substrate, wherein the substrate further includes a first side and an opposing second side having contaminants disposed on the second side; a showerhead disposed a first distance of about 1.5 mm to about 4.4 mm opposite the substrate support and facing the first side of the substrate; and one or more nozzles disposed a second distance of about 1 inch to about 2 inches beneath the substrate support to discharge a mixture of solid and gaseous carbon dioxide toward the contaminants on the second side of the substrate, and wherein the one or more nozzles have an angle of about 20 to about 40 degrees.Type: ApplicationFiled: April 2, 2020Publication date: July 23, 2020Inventors: Pulkit AGARWAL, Bonnie T. CHIA, Song-Moon SUH, Cheng-Hsiung TSAI, Dhritiman Subha KASHYAP, Xiaoxiong YUAN, Eric RIESKE
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Publication number: 20200131635Abstract: Apparatus and methods to process one or more wafers are described. A processing chamber comprises a first processing station comprising a first gas injector having a first face, a first emissivity and a first temperature, a second processing station comprising a second gas injector having a second face, a second emissivity and a second temperature, and a substrate support assembly comprising a plurality of substantially coplanar support surfaces, the substrate support assembly configured to move the support surfaces between the first processing station and the second processing station. When a wafer is on the support surfaces, a temperature skew of less than about 0.5° C. is developed upon moving the wafer between the stations in about 0.5 seconds.Type: ApplicationFiled: October 21, 2019Publication date: April 30, 2020Inventors: Joseph AuBuchon, Sanjeev Baluja, Dhritiman Subha Kashyap, Jared Ahmad Lee, Tejas Ulavi, Michael Rice
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Publication number: 20200102651Abstract: Multi-station process chamber lids comprising a plurality of station openings are described. A station separation purge channel is around the station openings. A plurality of angular purge channels separate station openings from adjacent station openings. A lid support beam can compensate for deflection of the chamber lid body.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Inventors: Dhritiman Subha Kashyap, Gopu Krishna, Sanjeev Baluja, Michael Rice
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Publication number: 20200075366Abstract: A thermal management system comprising a fluid channel with a plurality of parallel first flow paths extending along a first level in a first thermal mass and a plurality of parallel second flow paths extending along a second level in a second thermal mass are described. Methods for controlling the temperature of a substrate or heater surface and fluid manifolds are also described.Type: ApplicationFiled: August 29, 2019Publication date: March 5, 2020Inventors: Tejas Ulavi, Dhritiman Subha Kashyap, Sanjeev Baluja
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Publication number: 20200030766Abstract: Apparatus and methods for providing high velocity gas flow showerheads for deposition chambers are described. The showerhead has a faceplate in contact with a backing plate that has a concave portion to provide a plenum between the backing plate and the faceplate. A plurality of thermal elements is within the concave portion of the backing plate and extends to contact the faceplate.Type: ApplicationFiled: July 26, 2019Publication date: January 30, 2020Inventors: Jared Ahmad Lee, Sanjeev Baluja, Joseph AuBuchon, Dhritiman Subha Kashyap, Michael Rice
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Publication number: 20160322239Abstract: Embodiments of methods and apparatus for cleaning contaminants from a substrate are disclosed herein. In some embodiments, a substrate cleaning apparatus includes: a substrate support to support a substrate along an edge of the substrate, wherein the substrate further includes a first side and an opposing second side having contaminants disposed on the second side; a showerhead disposed a first distance of about 1.5 mm to about 4.4 mm opposite the substrate support and facing the first side of the substrate; and one or more nozzles disposed a second distance of about 1 inch to about 2 inches beneath the substrate support to discharge a mixture of solid and gaseous carbon dioxide toward the contaminants on the second side of the substrate, and wherein the one or more nozzles have an angle of about 20 to about 40 degrees.Type: ApplicationFiled: June 24, 2015Publication date: November 3, 2016Inventors: Pulkit AGARWAL, Bonnie T. CHIA, Song-Moon SUH, Cheng-Hsiung TSAI, Dhritiman Subha KASHYAP, Xiaoxiong YUAN, Eric RIESKE
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Patent number: 9447499Abstract: A dual-plenum showerhead for semiconductor processing operations is provided. The showerhead may include a faceplate with two sets of gas distribution holes, each set fed by a separate plenum. One set of gas distribution holes may be through-holes in the faceplate of the showerhead and may allow gases trapped between the faceplate and a plasma dome to flow towards a wafer. The other set of gas distribution holes may distribute gas routed through passages or channels in the faceplate towards the wafer. The passages or channels in the faceplate may include radial channels and annular channels and may be fed from an annular gas distribution channel about the periphery of the faceplate.Type: GrantFiled: June 22, 2012Date of Patent: September 20, 2016Assignee: Novellus Systems, Inc.Inventors: Shambhu N. Roy, Vincent E. Burkhart, Natan Solomon, Sanjay Gopinath, Kaihan Abidi Ashtiani, Bart van Schravendijk, Jason Stevens, Dhritiman Subha Kashyap, David Cohen
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Publication number: 20150345019Abstract: Embodiments of methods and apparatus for improving gas flow in a substrate processing chamber are provided herein. In some embodiments, a substrate processing chamber includes: a chamber body and a chamber lid defining an interior volume; a substrate support disposed within the interior volume and having a support surface to support a substrate; a gas passageway disposed in the lid opposite the substrate support to supply a gas mixture to the interior volume, the gas passageway including a first portion and a second portion; a first gas inlet disposed in the first portion to supply a first gas to the first portion of the gas passageway; and a second gas inlet disposed in the second portion to supply a second gas to the second portion.Type: ApplicationFiled: May 30, 2014Publication date: December 3, 2015Applicant: Applied Materials, Inc.Inventors: XIAOXIONG YUAN, KARTIK SHAH, DHRITIMAN SUBHA KASHYAP, UMESH M. KELKAR, DIEN-YEH WU, MUHAMMAD M. RASHEED
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Publication number: 20130341433Abstract: A dual-plenum showerhead for semiconductor processing operations is provided. The showerhead may include a faceplate with two sets of gas distribution holes, each set fed by a separate plenum. One set of gas distribution holes may be through-holes in a faceplate of the showerhead and may allow gases trapped between the faceplate and a plasma dome to flow towards a wafer. The other set of gas distribution holes may distribute gas routed through passages or channels in the faceplate towards the wafer. The passages or channels in the faceplate may include radial channels and annular channels and may be fed from an annular gas distribution channel about the periphery of the faceplate.Type: ApplicationFiled: June 22, 2012Publication date: December 26, 2013Inventors: Shambhu N. Roy, Vincent E. Burkhart, Natan Solomon, Sanjay Gopinath, Kaihan Abidi Ashtiani, Bart van Schravendijk, Jason Stevens, Dhritiman Subha Kashyap, David Cohen