Patents by Inventor Tuck Foong Koh

Tuck Foong Koh 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).

  • Publication number: 20190385874
    Abstract: Methods and apparatus for controlling gas flow in a process chamber use reconfigurable gas flow plates. The gas flow plates are configured based on at least one processing parameter in the process chamber and then inserted into the process chamber such that a gas flow into an internal volume of the process chamber is controlled by the gas flow plate. The configuration of the gas flow plate may be based on a type of processing, dimensions of the internal volume of the processing chamber, a number of substrates to be processed in the processing chamber, and other parameters. The gas flow plate may include changeable parameters such as a number of through holes, through hole diameters, orientation of through holes, or a position of through holes relative to spacing between substrates.
    Type: Application
    Filed: June 18, 2018
    Publication date: December 19, 2019
    Inventors: PREETHAM P. RAO, MADHUKAR C GULEDGUDD, ANANTHKRISHNA JUPUDI, RIBHU GAUTAM, TUCK FOONG KOH
  • Publication number: 20190355616
    Abstract: Methods and apparatus for cleaving a substrate in a semiconductor chamber. The semiconductor chamber pressure is adjusted to a process pressure, a substrate is then heated to a nucleation temperature of ions implanted in the substrate, the temperature of the substrate is then adjusted below the nucleation temperature of the ions, and the temperature is maintained until cleaving of the substrate occurs. Microwaves may be used to provide heating of the substrate for the processes. A cleaving sensor may be used for detection of successful cleaving by detecting pressure changes, acoustic emissions, changes within the substrate, and/or residual gases given off by the implanted ions when the cleaving occurs.
    Type: Application
    Filed: May 6, 2019
    Publication date: November 21, 2019
    Inventors: FELIX DENG, YUEH SHENG OW, TUCK FOONG KOH, NUNO YEN-CHU CHEN, YUICHI WADA, SREE RANGASAI V KESAPRAGADA, CLINTON GOH
  • Publication number: 20190341264
    Abstract: Methods, apparatuses, and systems for substrate processing for lowering contact resistance in at least contact pads of a semiconductor device are provided herein. In some embodiments, a method of substrate processing for lowering contact resistance of contact pads includes: circulating a cooling fluid in at least one channel of a pedestal; and exposing a backside of the substrate located on the pedestal to a cooling gas to cool a substrate located on the pedestal to a temperature of less than 70 degrees Celsius. In some embodiments in accordance with the present principles, the method can further include distributing a hydrogen gas or hydrogen gas combination over the substrate.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 7, 2019
    Inventors: YUEH SHENG OW, JUNQI WEI, WEN LONG FAVIER SHOO, ANANTHKRISHNA JUPUDI, TAKASHI SHIMIZU, KELVIN BOH, TUCK FOONG KOH
  • Publication number: 20170365490
    Abstract: Methods of curing polyimide to tune the coefficient of thermal expansion are provided herein. In some embodiments, a method of curing a polymer layer on a substrate, includes: (a) applying a variable frequency microwave energy to the substrate to heat the polymer layer and the substrate to a first temperature; and (b) adjusting the variable frequency microwave energy to increase a temperature of the polymer layer and the substrate to a second temperature to cure the polymer layer.
    Type: Application
    Filed: March 7, 2017
    Publication date: December 21, 2017
    Inventors: YUEH SHENG OW, RUI WANG, TUCK FOONG KOH, XIN WANG
  • Patent number: 9818624
    Abstract: Embodiments of methods and apparatus for correcting substrate deformity are provided herein. In some embodiments, a substrate flattening system includes: a first process chamber having a first substrate support and a first showerhead, wherein the first substrate support does not include a chucking mechanism; a first heater disposed in the first substrate support to heat a substrate placed on a first support surface of the first substrate support; a second heater configured to heat a process gas flowing through the first showerhead into a first processing volume of the first process chamber; and a second process chamber having a second substrate support, wherein the second substrate support is not heated, and wherein the first process chamber and the cooling chamber are both non-vacuum chambers.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: November 14, 2017
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Jen Sern Lew, Tuck Foong Koh, Sriskantharajah Thirunavukarasu, Karthik Elumalai, Eng Sheng Peh, Jun-Liang Su
  • Publication number: 20160322234
    Abstract: Embodiments of methods and apparatus for correcting substrate deformity are provided herein. In some embodiments, a substrate flattening system includes: a first process chamber having a first substrate support and a first showerhead, wherein the first substrate support does not include a chucking mechanism; a first heater disposed in the first substrate support to heat a substrate placed on a first support surface of the first substrate support; a second heater configured to heat a process gas flowing through the first showerhead into a first processing volume of the first process chamber; and a second process chamber having a second substrate support, wherein the second substrate support is not heated, and wherein the first process chamber and the cooling chamber are both non-vacuum chambers.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 3, 2016
    Inventors: Jen Sern LEW, Tuck Foong KOH, Sriskantharajah THIRUNAVUKARASU, Karthik ELUMALAI, ENG SHENG PEH, JUN-LIANG SU
  • Publication number: 20160064267
    Abstract: A sealing structure is between a workpiece or substrate and a carrier for plasma processing. In one example, a substrate carrier has a top surface for holding a substrate, the top surface having a perimeter and a resilient sealing ridge on the perimeter of the top surface to contact the substrate when the substrate is being carried on the carrier.
    Type: Application
    Filed: January 22, 2015
    Publication date: March 3, 2016
    Inventors: Chin Hock Toh, Tuck Foong Koh, Sriskantharajah Thirunavukarasu, Jern Sern Lew, Arvind Sundarrajan, Seshadri Ramaswami