Patents by Inventor Ushasree Katakamsetty

Ushasree Katakamsetty 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: 20240105633
    Abstract: Disclosed is a wafer-scale chip structure including a semiconductor wafer and multiple dies on the semiconductor wafer. The dies can include at least two dies with different patterns of fill shapes. Also disclosed are wafer-scale chip design methods and systems. In the design methods and systems, post-chip layout wafer-level topography optimization is performed to, for example, minimize performance variations between dies of the same design within the wafer-scale chip. Specifically, across-wafer die placement and wafer-level topography information is used to custom design and/or select different patterns of fill shapes to be inserted into the layouts of dies placed at different locations across the wafer-scale chip (including different patterns to be inserted into the layouts of dies that have the same design) in order to generate a design that minimizes either all across-wafer thickness variations or at least across-wafer thickness variations associated with specific dies having the same specific design.
    Type: Application
    Filed: September 27, 2022
    Publication date: March 28, 2024
    Inventors: Osamu Samuel Nakagawa, Ushasree Katakamsetty, Howard S. Landis, Stefan Nikolaev Voykov
  • Publication number: 20200035495
    Abstract: Apparatus and methods of chemical-mechanical polishing of a layer on a wafer. A plurality of polishers arranged on a rotating plate, and a carrier is configured to hold the wafer and to place the layer in contact with the polishers. Each polisher includes a platen and a force-applying device operatively connected to the platen, and the force-applying device is configured to apply a variable force to the platen in order to change a rate of material removal over an area of the layer on the wafer contacted by a polishing pad carried by the platen.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 30, 2020
    Inventors: Dewei Xu, Lili Cheng, Shinichiro Kakita, Ushasree Katakamsetty, Roderick A. Augur
  • Patent number: 9064084
    Abstract: Enhancements in lithography for forming an integrated circuit are disclosed. The enhancements include a topography analysis of a design data file to obtain accumulative topography information for different mask levels. The topography information facilitates topography driven optical proximity correction and topography driven lithography.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: June 23, 2015
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Ushasree Katakamsetty, Yang Qing, Wee Kwong Yeo, Chiu Wing Hui, Shyue Fong Quek, Valerio Perez
  • Patent number: 9026954
    Abstract: A design or lithographic enhancement process, a method for forming a device based on the lithographic enhancement process and a system for pattern enhancement are presented. The process includes processing a design data file. The design data file includes information of design layers in an integrated circuit (IC). Processing the design data file includes analyzing the design data file and patterns in the design data file are enhanced taken into consideration topography information of design layers corresponding to masks of the IC.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: May 5, 2015
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Valerio Barnedo Perez, Ushasree Katakamsetty, Wee Kwong Yeo
  • Publication number: 20140282292
    Abstract: A design or lithographic enhancement process, a method for forming a device based on the lithographic enhancement process and a system for pattern enhancement are presented. The process includes processing a design data file. The design data file includes information of design layers in an integrated circuit (IC). Processing the design data file includes analyzing the design data file and patterns in the design data file are enhanced taken into consideration topography information of design layers corresponding to masks of the IC.
    Type: Application
    Filed: January 17, 2014
    Publication date: September 18, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Valerio Barnedo PEREZ, Ushasree KATAKAMSETTY, Wee Kwong YEO
  • Publication number: 20140282300
    Abstract: Enhancements in lithography for forming an integrated circuit are disclosed. The enhancements include a topography analysis of a design data file to obtain accumulative topography information for different mask levels. The topography information facilitates topography driven optical proximity correction and topography driven lithography.
    Type: Application
    Filed: April 24, 2014
    Publication date: September 18, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Ushasree KATAKAMSETTY, Yang QING, Wee Kwong YEO, Chiu Wing HUI, Shyue Fong QUEK, Valerio PEREZ
  • Patent number: 8726221
    Abstract: A method for selecting and placing of an IP block in a SOC design based on a topology and/or a density of the SOC design is disclosed. Embodiments include: displaying a user interface; causing, at least in part, a presentation in the user interface of a topology and density view of a SOC design that includes an IP block; and modifying, prior to a tape-out of the SOC design, topology and/or density transition for the IP block in the SOC design based on the presentation.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 13, 2014
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Edward Kah Ching Teoh, Ushasree Katakamsetty, Chiu Wing Hui
  • Publication number: 20130339916
    Abstract: A method for selecting and placing of an IP block in a SOC design based on a topology and/or a density of the SOC design is disclosed. Embodiments include: displaying a user interface; causing, at least in part, a presentation in the user interface of a topology and density view of a SOC design that includes an IP block; and modifying, prior to a tape-out of the SOC design, topology and/or density transition for the IP block in the SOC design based on the presentation.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Applicant: GLOBALFOUNDRIES Singapore Pte.Ltd.
    Inventors: Edward Kah Ching Teoh, Ushasree Katakamsetty, Chiu Wing Hui