Patents by Inventor Karrthik Parathithasan

Karrthik Parathithasan 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).

  • Patent number: 11871667
    Abstract: Methods and apparatus for processing a substrate are provided herein. For example, a system for processing a substrate includes a process chamber comprising a first processing volume and a second processing volume, a carrier disposed in the first processing volume, comprising a first thermoelectric module (TEM), and configured to support the substrate while the substrate is being heated or cooled, a chuck disposed within the second processing volume, comprising a second TEM, and configured to receive the substrate from the carrier and to support the substrate while the substrate is being heated or cooled, and a system controller configured to monitor a temperature of at least one of the substrate, the carrier, or the chuck during operation, and based on the temperature of the at least one of the substrate, the carrier, or the chuck, supply current to at least one of the first TEM or the second TEM.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: January 9, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Sriskantharajah Thirunavukarasu, Puay Han Tan, Karrthik Parathithasan, Jun-Liang Su, Fang Jie Lim, Chin Wei Tan, Wei Jie Dickson Teo
  • Publication number: 20220085268
    Abstract: Methods and apparatus for processing a substrate are provided herein. For example, a system for processing a substrate includes a process chamber comprising a first processing volume and a second processing volume, a carrier disposed in the first processing volume, comprising a first thermoelectric module (TEM), and configured to support the substrate while the substrate is being heated or cooled, a chuck disposed within the second processing volume, comprising a second TEM, and configured to receive the substrate from the carrier and to support the substrate while the substrate is being heated or cooled, and a system controller configured to monitor a temperature of at least one of the substrate, the carrier, or the chuck during operation, and based on the temperature of the at least one of the substrate, the carrier, or the chuck, supply current to at least one of the first TEM or the second TEM.
    Type: Application
    Filed: September 17, 2020
    Publication date: March 17, 2022
    Inventors: Sriskantharajah THIRUNAVUKARASU, Puay Han TAN, Karrthik PARATHITHASAN, Jun-Liang SU, Fang Jie LIM, Chin Wei TAN, Wei Jie Dickson TEO
  • Patent number: 10930542
    Abstract: Embodiments of methods and apparatus for handling substrates of different sizes are provided herein. In some embodiments, an apparatus for handling substrates of different sizes includes: a pair of end effectors having a first set of contact pads configured to support a substrate having a first size and a second set of contact pads configured to support a substrate having a second size, smaller than the first size.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: February 23, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Sriskantharajah Thirunavukarasu, Eng Sheng Peh, Karrthik Parathithasan, Fang Jie Lim
  • Publication number: 20210035795
    Abstract: Methods and apparatus for reducing warpage of a substrate. In some embodiments, a method of reducing substrate warpage comprises heating the substrate with an epoxy layer to at least a glass transition temperature of the epoxy layer while allowing the substrate to expand; maintaining the at least the glass transition temperature of the substrate until the substrate is constrained; constraining the substrate with a total clamping force of approximately 5000N to approximately 7000N exerted towards the substrate from a top direction and a bottom direction; applying at least one electrostatic field to the substrate with a first electrostatic chuck positioned above the substrate and a second electrostatic chuck positioned below the substrate; and rapidly cooling the substrate using a first liquid convection heat sink positioned above the substrate and a second liquid convection heat sink positioned below the substrate.
    Type: Application
    Filed: July 23, 2020
    Publication date: February 4, 2021
    Inventors: Qi Jie PENG, Prayudi LIANTO, Chin Wei TAN, Sriskantharajah THIRUNAVUKARASU, Arvind SUNDARRAJAN, Jun-Liang SU, Fang Jie LIM, Manorajh ARUNAKIRI, Wei Jie Dickson TEO, Karrthik PARATHITHASAN, Puay Han TAN
  • Patent number: 10847400
    Abstract: Methods for bonding and de-bonding a thin substrate film to a carrier plate are provided herein. In some embodiments, a method of processing a semiconductor substrate includes applying a polymer layer that is non-adhesive to a carrier plate formed of a dielectric material. A second layer is then applied to the polymer layer. One or more redistribution layers are then formed on the second layer. The second layer is then separated from the carrier plate via at least one of magnetic induction heating, infrared exposure, or electrostatic repulsion.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: November 24, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Sriskantharajah Thirunavukarasu, Arvind Sundarrajan, Karrthik Parathithasan, Qi Jie Peng, Manorajh Arunakiri
  • Publication number: 20200211883
    Abstract: Methods for bonding and de-bonding a thin substrate film to a carrier plate are provided herein. In some embodiments, a method of processing a semiconductor substrate includes applying a polymer layer that is non-adhesive to a carrier plate formed of a dielectric material. A second layer is then applied to the polymer layer. One or more redistribution layers are then formed on the second layer. The second layer is then separated from the carrier plate via at least one of magnetic induction heating, infrared exposure, or electrostatic repulsion.
    Type: Application
    Filed: February 26, 2019
    Publication date: July 2, 2020
    Inventors: SRISKANTHARAJAH THIRUNAVUKARASU, ARVIND SUNDARRAJAN, KARRTHIK PARATHITHASAN, QI JIE PENG, MANORAJH ARUNAKIRI
  • Patent number: 10504762
    Abstract: A bridging front opening unified pod (FOUP) is provided herein. In some embodiments, the bridging FOUP includes a bottom floor, side walls, a ceiling and a back wall that forms an enclosure volume having a front opening, a plurality of supports coupled to the side walls and extending into the enclosure volume, wherein the plurality of supports are configured to support a substrate carrier, a base plate assembly comprising a base plate coupled to the bottom floor, a pair of L-brackets coupled to the base plate, wherein each L-brackets includes a short lift pin, a long lift pin coupled to the base plate, wherein the height of the short lift pins and the long lift pin is selected such that the substrate is kept level when disposed thereon, and a docking support disposed proximate the base plate assembly and configured to support a substrate carrier.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: December 10, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Karrthik Parathithasan, Fang Jie Lim, Sriskantharajah Thirunavukarasu, Eng Sheng Peh
  • Publication number: 20190259635
    Abstract: Embodiments of a process kit for processing reduced size substrates are provided herein. In some embodiments, a process kit includes a substrate carrier having a pocket configured to hold a substrate, wherein the pocket extends partially through a thickness of the substrate carrier; and wherein the pocket includes an annular trench disposed at a periphery of a floor of the pocket.
    Type: Application
    Filed: February 12, 2019
    Publication date: August 22, 2019
    Inventors: KARRTHIK PARATHITHASAN, FANG JIE LIM, ANAND MAHADEV, SHOJU VAYYAPRON, SRISKANTHARAJAH THIRUNAVUKARASU, ENG SHENG PEH
  • Publication number: 20190259647
    Abstract: Embodiments of a process kit for processing reduced size substrates are provided herein. In some embodiments, a process kit includes a deposition ring having an annular body; and a plurality of protrusions extending upwardly from the annular body and disposed about and equidistant from a central axis of the annular body, wherein an angle between a first protrusion and a second protrusion is between about 140° and about 180°.
    Type: Application
    Filed: February 12, 2019
    Publication date: August 22, 2019
    Inventors: SRISKANTHARAJAH THIRUNAVUKARASU, ENG SHENG PEH, FANG JIE LIM, KARRTHIK PARATHITHASAN, ANAND MAHADEV, SHOJU VAYYAPRON, CHAI BOON XIAN
  • Publication number: 20190252235
    Abstract: Embodiments of methods and apparatus for handling substrates of different sizes are provided herein. In some embodiments, an apparatus for handling substrates of different sizes includes: a pair of end effectors having a first set of contact pads configured to support a substrate having a first size and a second set of contact pads configured to support a substrate having a second size, smaller than the first size.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 15, 2019
    Inventors: SRISKANTHARAJAH THIRUNAVUKARASU, ENG SHENG PEH, KARRTHIK PARATHITHASAN, FANG JIE LIM
  • Publication number: 20190244845
    Abstract: A bridging front opening unified pod (FOUP) is provided herein. In some embodiments, the bridging FOUP includes a bottom floor, side walls, a ceiling and a back wall that forms an enclosure volume having a front opening, a plurality of supports coupled to the side walls and extending into the enclosure volume, wherein the plurality of supports are configured to support a substrate carrier, a base plate assembly comprising a base plate coupled to the bottom floor, a pair of L-brackets coupled to the base plate, wherein each L-brackets includes a short lift pin, a long lift pin coupled to the base plate, wherein the height of the short lift pins and the long lift pin is selected such that the substrate is kept level when disposed thereon, and a docking support disposed proximate the base plate assembly and configured to support a substrate carrier.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 8, 2019
    Inventors: KARRTHIK PARATHITHASAN, FANG JIE LIM, SRISKANTHARAJAH THIRUNAVUKARASU, ENG SHENG PEH