Patents by Inventor Viren KALSEKAR
Viren KALSEKAR 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: 12062526Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body along a first surface of the lid plate. The lid plate may define a plurality of apertures through the lid plate. The lid plate may further define a recess about each aperture of the plurality of apertures in the first surface of the lid plate. Each recess may extend partially through a thickness of the lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the plurality of apertures. Each recess may receive at least a portion of one of the lid stacks of the plurality of lid stacks. The plurality of lid stacks may at least partially define a plurality of processing regions vertically offset from the transfer region.Type: GrantFiled: October 22, 2020Date of Patent: August 13, 2024Assignee: Applied Materials, Inc.Inventor: Viren Kalsekar
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Publication number: 20240186121Abstract: Exemplary choke plates for use in a substrate processing system may include a plate defining a first aperture through the plate and a second aperture through the plate. The second aperture may be laterally offset from the first aperture. The plate may include a flange that defines a purging inlet. The plate may include a rim defining a plurality of purging outlets that are fluidly coupled with the purging inlet. Each of the plurality of purging outlets may be fluidly coupled with the first aperture.Type: ApplicationFiled: December 6, 2022Publication date: June 6, 2024Applicant: Applied Materials, Inc.Inventors: Vellaichamy Nagappan, Viren Kalsekar, Jeongmin Lee, Vinay K. Prabhakar, Pratap Chandran, Dharma Ratnam Srichurnam, Azhar Khan, Sumit Subhash Singh, Siva Chandrasekar, Satish Radhakrishnan
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Patent number: 11984305Abstract: A substrate pedestal includes a thermally conductive substrate support including a mesh, a thermally conductive shaft including a plurality of conductive rods therein, each conductive rod having a first end and a second end, and a sensor. The first end of each conductive rod is electrically coupled to the mesh, and the sensor is disposed between the first and second ends of each conductive rod and configured to detect current flow through each conductive rod.Type: GrantFiled: January 2, 2023Date of Patent: May 14, 2024Assignee: Applied Materials, Inc.Inventors: Viren Kalsekar, Vinay K. Prabhakar, Venkata Sharat Chandra Parimi
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Patent number: 11699602Abstract: Exemplary substrate support assemblies may include a platen characterized by a first surface configured to support a semiconductor substrate. The assemblies may include a first stem section coupled with a second surface of the platen opposite the first surface of the platen. The assemblies may include a second stem section coupled with the first stem section. The second stem section may include a housing and a rod holder disposed within the housing. The second stem section may include a connector seated within the rod holder at a first end of the connector. The second stem section may include a heater rod disposed within the first end of the connector and a heater extension rod coupled with the connector at a second end of the connector. The second stem section may include an RF rod and an RF strap coupling the RF rod with an RF extension rod.Type: GrantFiled: July 7, 2020Date of Patent: July 11, 2023Assignee: Applied Materials, Inc.Inventors: Jian Li, Edward P. Hammond, Viren Kalsekar, Vidyadharan Srinivasa Murthy Bangalore, Juan Carlos Rocha-Alvarez
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Publication number: 20230170190Abstract: Embodiments of the present disclosure generally relate to substrate supports for process chambers and RF grounding configurations for use therewith. Methods of grounding RF current are also described. A chamber body at least partially defines a process volume therein. A first electrode is disposed in the process volume. A pedestal is disposed opposite the first electrode. A second electrode is disposed in the pedestal. An RF filter is coupled to the second electrode through a conductive rod. The RF filter includes a first capacitor coupled to the conductive rod and to ground. The RF filter also includes a first inductor coupled to a feedthrough box. The feedthrough box includes a second capacitor and a second inductor coupled in series. A direct current (DC) power supply for the second electrode is coupled between the second capacitor and the second inductor.Type: ApplicationFiled: January 26, 2023Publication date: June 1, 2023Inventors: Satya THOKACHICHU, Edward P. HAMMOND, IV, Viren KALSEKAR, Zheng John YE, Abdul Aziz KHAJA, Vinay K. PRABHAKAR
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Publication number: 20230151487Abstract: The present disclosure relates to systems and methods for reducing the formation of hardware residue and minimizing secondary plasma formation during substrate processing in a process chamber. The process chamber may include a gas distribution member configured to flow a first gas into a process volume and generate a plasma therefrom. A second gas is supplied into a lower region of the process volume. Further, an exhaust port is disposed in the lower region to remove excess gases or by-products from the process volume during or after processing.Type: ApplicationFiled: January 20, 2023Publication date: May 18, 2023Inventors: Liangfa HU, Prashant Kumar KULSHRESHTHA, Anjana M. PATEL, Abdul Aziz KHAJA, Viren KALSEKAR, Vinay K. PRABHAKAR, Satya Teja Babu THOKACHICHU, Byung Seok KWON, Ratsamee LIMDULPAIBOON, Kwangduk Douglas LEE, Ganesh BALASUBRAMANIAN
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Publication number: 20230147452Abstract: A substrate pedestal includes a thermally conductive substrate support including a mesh, a thermally conductive shaft including a plurality of conductive rods therein, each conductive rod having a first end and a second end, and a sensor. The first end of each conductive rod is electrically coupled to the mesh, and the sensor is disposed between the first and second ends of each conductive rod and configured to detect current flow through each conductive rod.Type: ApplicationFiled: January 2, 2023Publication date: May 11, 2023Applicant: Applied Materials, Inc.Inventors: Viren KALSEKAR, Vinay K. PRABHAKAR, Venkata Sharat Chandra PARIMI
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Patent number: 11626303Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a first lid plate seated on the chamber body along a first surface of the first lid plate. The first lid plate may define a plurality of apertures through the first lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the plurality of apertures. The plurality of lid stacks may at least partially define a plurality of processing regions vertically offset from the transfer region. The systems may include a second lid plate coupled with the plurality of lid stacks. The plurality of lid stacks may be positioned between the first lid plate and the second lid plate. A component of each lid stack of the plurality of lid stacks may be coupled with the second lid plate.Type: GrantFiled: April 23, 2020Date of Patent: April 11, 2023Assignee: Applied Materials, Inc.Inventor: Viren Kalsekar
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Publication number: 20230069317Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body. The lid plate may define a first plurality of apertures and a second plurality of apertures. The systems may include a plurality of lid stacks equal to a number of the first plurality of apertures. Each lid stack may include a choke plate seated on the lid plate along a first surface of the choke plate. The choke plate may define a first aperture axially aligned with an associated aperture of the first plurality of apertures. The choke plate may define a second aperture axially aligned with an associated aperture of the second plurality of apertures. The choke plate may define protrusions extending from each of a top and bottom surface of the choke plate that are arranged substantially symmetrically about the first aperture.Type: ApplicationFiled: August 25, 2021Publication date: March 2, 2023Applicant: Applied Materials, Inc.Inventors: Siva Chandrasekar, Satish Radhakrishnan, Viren Kalsekar, Vellaichamy Nagappan, Vinay K. Prabhakar
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Patent number: 11587773Abstract: A substrate pedestal includes a thermally conductive substrate support including a mesh, a thermally conductive shaft including a plurality of conductive rods therein, each conductive rod having a first end and a second end, and a sensor. The first end of each conductive rod is electrically coupled to the mesh, and the sensor is disposed between the first and second ends of each conductive rod and configured to detect current flow through each conductive rod.Type: GrantFiled: March 10, 2020Date of Patent: February 21, 2023Assignee: Applied Materials, Inc.Inventors: Viren Kalsekar, Vinay K. Prabhakar, Venkata Sharat Chandra Parimi
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Patent number: 11569072Abstract: Embodiments of the present disclosure generally relate to substrate supports for process chambers and RF grounding configurations for use therewith. Methods of grounding RF current are also described. A chamber body at least partially defines a process volume therein. A first electrode is disposed in the process volume. A pedestal is disposed opposite the first electrode. A second electrode is disposed in the pedestal. An RF filter is coupled to the second electrode through a conductive rod. The RF filter includes a first capacitor coupled to the conductive rod and to ground. The RF filter also includes a first inductor coupled to a feedthrough box. The feedthrough box includes a second capacitor and a second inductor coupled in series. A direct current (DC) power supply for the second electrode is coupled between the second capacitor and the second inductor.Type: GrantFiled: April 23, 2019Date of Patent: January 31, 2023Assignee: APPLIED MATERIALS, INC.Inventors: Satya Thokachichu, Edward P. Hammond, IV, Viren Kalsekar, Zheng John Ye, Abdul Aziz Khaja, Vinay K. Prabhakar
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Patent number: 11560623Abstract: The present disclosure relates to systems and methods for reducing the formation of hardware residue and minimizing secondary plasma formation during substrate processing in a process chamber. The process chamber may include a gas distribution member configured to flow a first gas into a process volume and generate a plasma therefrom. A second gas is supplied into a lower region of the process volume. Further, an exhaust port is disposed in the lower region to remove excess gases or by-products from the process volume during or after processing.Type: GrantFiled: April 24, 2020Date of Patent: January 24, 2023Assignee: Applied Materials, Inc.Inventors: Liangfa Hu, Prashant Kumar Kulshreshtha, Anjana M. Patel, Abdul Aziz Khaja, Viren Kalsekar, Vinay K. Prabhakar, Satya Teja Babu Thokachichu, Byung Seok Kwon, Ratsamee Limdulpaiboon, Kwangduk Douglas Lee, Ganesh Balasubramanian
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Patent number: 11515176Abstract: Exemplary substrate processing systems may include chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body. The lid plate may define a first plurality of apertures through the lid plate and a second plurality of apertures through the lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the first plurality of apertures defined through the lid plate. Each lid stack of the plurality of lid stacks may include a choke plate seated on the lid plate along a first surface of the choke plate. The choke plate may define a first aperture axially aligned with an associated aperture of the first plurality of apertures. The choke plate may define a second aperture axially aligned with an associated aperture of the second plurality of apertures.Type: GrantFiled: April 14, 2020Date of Patent: November 29, 2022Assignee: Applied Materials, Inc.Inventors: Siva Chandrasekar, Satish Radhakrishnan, Rajath Kumar Lakkenahalli Hiriyannaiah, Viren Kalsekar, Vinay Prabhakar
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Publication number: 20220130649Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body along a first surface of the lid plate. The lid plate may define a plurality of apertures through the lid plate. The lid plate may further define a recess about each aperture of the plurality of apertures in the first surface of the lid plate. Each recess may extend partially through a thickness of the lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the plurality of apertures. Each recess may receive at least a portion of one of the lid stacks of the plurality of lid stacks. The plurality of lid stacks may at least partially define a plurality of processing regions vertically offset from the transfer region.Type: ApplicationFiled: October 22, 2020Publication date: April 28, 2022Applicant: Applied Materials, Inc.Inventor: Viren Kalsekar
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Publication number: 20220093426Abstract: Exemplary substrate processing systems may include a base. The systems may include a chamber body having a transfer region housing that defines a transfer region. The transfer region housing may include a first portion and a second portion. The systems may include a lid assembly positioned atop the chamber body. The lid assembly may include a lid and a lid stack. The systems may include one or more lift mechanisms that elevate the first portion of the transfer region housing and at least a portion of the lid assembly relative to the base. The first portion and the second portion may mate with one another when the transfer region housing is in an operational configuration. The first portion and the second portion may be separated when the first portion of the transfer region housing is elevated.Type: ApplicationFiled: September 21, 2020Publication date: March 24, 2022Applicant: Applied Materials, Inc.Inventors: Samuel W. Shannon, Luke Bonecutter, Viren Kalsekar, Chahal Neema
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Publication number: 20220020615Abstract: Exemplary substrate processing systems may include a plurality of processing regions. The systems may include a transfer region housing defining a transfer region fluidly coupled with the plurality of processing regions. The systems may include a plurality of substrate supports. Each substrate support of the plurality of substrate supports may be vertically translatable between the transfer region and an associated processing region of the plurality of processing regions. The systems may include a transfer apparatus including a rotatable shaft extending through the transfer region housing. The transfer apparatus may also include an end effector coupled with the rotatable shaft. The systems may include an exhaust foreline including a plurality of foreline tails. Each foreline tail of the plurality of foreline tails may be fluidly coupled with a separate processing region of the plurality of processing regions. The systems may include a plurality of throttle valves.Type: ApplicationFiled: July 19, 2020Publication date: January 20, 2022Applicant: Applied Materials, Inc.Inventors: Nitin Pathak, Vinay K. Prabhakar, Badri N. Ramamurthi, Viren Kalsekar, Juan Carlos Rocha-Alvarez
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Publication number: 20220013373Abstract: Exemplary substrate support assemblies may include a platen characterized by a first surface configured to support a semiconductor substrate. The assemblies may include a first stem section coupled with a second surface of the platen opposite the first surface of the platen. The assemblies may include a second stem section coupled with the first stem section. The second stem section may include a housing and a rod holder disposed within the housing. The second stem section may include a connector seated within the rod holder at a first end of the connector. The second stem section may include a heater rod disposed within the first end of the connector and a heater extension rod coupled with the connector at a second end of the connector. The second stem section may include an RF rod and an RF strap coupling the RF rod with an RF extension rod.Type: ApplicationFiled: July 7, 2020Publication date: January 13, 2022Applicant: Applied Materials, Inc.Inventors: Jian Li, Edward P. Hammond, Viren Kalsekar, Vidyadharan Srinivasa Murthy Bangalore, Juan Carlos Rocha-Alvarez
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Publication number: 20210335635Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a first lid plate seated on the chamber body along a first surface of the first lid plate. The first lid plate may define a plurality of apertures through the first lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the plurality of apertures. The plurality of lid stacks may at least partially define a plurality of processing regions vertically offset from the transfer region. The systems may include a second lid plate coupled with the plurality of lid stacks. The plurality of lid stacks may be positioned between the first lid plate and the second lid plate. A component of each lid stack of the plurality of lid stacks may be coupled with the second lid plate.Type: ApplicationFiled: April 23, 2020Publication date: October 28, 2021Applicant: Applied Materials, Inc.Inventor: Viren Kalsekar
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Publication number: 20210320017Abstract: Exemplary substrate processing systems may include a plurality of processing regions. The systems may include a transfer region housing defining a transfer region fluidly coupled with the plurality of processing regions. The systems may include a plurality of substrate supports, and each substrate support of the plurality of substrate supports may be vertically translatable between the transfer region and an associated processing region of the plurality of processing regions. The systems may include a transfer apparatus including a rotatable shaft extending through the transfer region housing. The transfer apparatus may include an end effector coupled with the rotatable shaft. The end effector may include a central hub defining a central aperture fluidly coupled with a purge source. The end effector may also include a plurality of arms having a number of arms equal to a number of substrate supports of the plurality of substrate supports.Type: ApplicationFiled: April 9, 2020Publication date: October 14, 2021Applicant: Applied Materials, Inc.Inventors: Nitin Pathak, Vinay Prabhakar, Badri N. Ramamurthi, Viren Kalsekar, Tuan A. Nguyen, Juan Carlos Rocha-Alvarez
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Publication number: 20210320018Abstract: Exemplary substrate processing systems may include chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body. The lid plate may define a first plurality of apertures through the lid plate and a second plurality of apertures through the lid plate. The systems may include a plurality of lid stacks equal to a number of apertures of the first plurality of apertures defined through the lid plate. Each lid stack of the plurality of lid stacks may include a choke plate seated on the lid plate along a first surface of the choke plate. The choke plate may define a first aperture axially aligned with an associated aperture of the first plurality of apertures. The choke plate may define a second aperture axially aligned with an associated aperture of the second plurality of apertures.Type: ApplicationFiled: April 14, 2020Publication date: October 14, 2021Applicant: Applied Materials, Inc.Inventors: Siva Chandrasekar, Satish Radhakrishnan, Rajath Kumar Lakkenahalli Hiriyannaiah, Viren Kalsekar, Vinay Prabhakar