Patents by Inventor Uday Mitra

Uday Mitra 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: 20190067103
    Abstract: Methods and apparatus to form fully self-aligned vias are described. Portions of first conductive lines are recessed in a first insulating layer on a substrate. A first metal film is formed in the recessed portions of the first conductive lines and pillars are formed from the first metal film. A second insulating layer is deposited around the pillars. The pillars are removed to form vias in the second insulating layer. A third insulating layer is deposited in the vias and an overburden is formed on the second insulating layer. Portions of the overburden are selectively etched from the second insulating layer to expose the second insulating layer and the filled vias and leaving portions of the third insulating layer on the second insulating layer. The third insulating layer is etched from the filled vias to form a via opening to the first conductive line.
    Type: Application
    Filed: August 29, 2018
    Publication date: February 28, 2019
    Inventors: Ying Zhang, Regina Freed, Nitin K. Ingle, Ho-yung Hwang, Uday Mitra, Abhijit Basu Mallick
  • Publication number: 20180374750
    Abstract: Methods and apparatus to form fully self-aligned vias are described. First conductive lines are recessed in a first insulating layer on a substrate. A first metal film is formed in the recessed first conductive lines and pillars are formed from the first metal film. Some of the pillars are selectively removed and a second insulating layer is deposited around the remaining pillar. The remaining pillars are removed to form vias in the second insulating layer. A third insulating layer is deposited in the vias and an overburden is formed on the second insulating layer. Portions of the overburden are selectively etched from the second insulating layer to expose the second insulating layer and the filled vias and leaving portions of the third insulating layer on the second insulating layer. The third insulating layer is etched from the filled vias to form a via opening to the first conductive line.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Inventors: Ying Zhang, Regina Freed, Nitin K. Ingle, Ho-yung Hwang, Uday Mitra, Abhijit Basu Mallick, Sanjay Natarajan
  • Publication number: 20180286749
    Abstract: A first metallization layer comprising a set of first conductive lines that extend along a first direction on a first insulating layer on a substrate. A second insulating layer is on the first insulating layer. A second metallization layer comprises a set of second conductive lines on a third insulating layer and on the second insulating layer above the first metallization layer. The set of second conductive lines extend along a second direction that crosses the first direction at an angle. A via between the first metallization layer and the second metallization layer. The via is self-aligned along the second direction to one of the first conductive lines.
    Type: Application
    Filed: August 17, 2017
    Publication date: October 4, 2018
    Inventors: Ying Zhang, Abhijit Basu Mallick, Regina Freed, Nitin K. Ingle, Uday Mitra, Ho-Yung Hwang
  • Patent number: 9978596
    Abstract: The present disclosure provides forming nanostructures with precision dimension control and minimum lithographic related errors for features with dimension under 14 nanometers and beyond. A self-aligned multiple spacer patterning (SAMSP) process is provided herein and the process utilizes minimum lithographic exposure process, but rather multiple deposition/etching process to incrementally reduce feature sizes formed in the mask along the manufacturing process, until a desired extreme small dimension nanostructures are formed in a mask layer.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 22, 2018
    Assignee: Applied Materials, Inc.
    Inventors: Ying Zhang, Uday Mitra, Praburam Gopalraja, Srinivas D. Nemani, Hua Chung
  • Publication number: 20170092494
    Abstract: The present disclosure provides forming nanostructures with precision dimension control and minimum lithographic related errors for features with dimension under 14 nanometers and beyond. A self-aligned multiple spacer patterning (SAMSP) process is provided herein and the process utilizes minimum lithographic exposure process, but rather multiple deposition/etching process to incrementally reduce feature sizes formed in the mask along the manufacturing process, until a desired extreme small dimension nanostructures are formed in a mask layer.
    Type: Application
    Filed: December 13, 2016
    Publication date: March 30, 2017
    Inventors: Ying ZHANG, Uday MITRA, Praburam GOPALRAJA, Srinivas D. NEMANI, Hua CHUNG
  • Patent number: 9548201
    Abstract: The present disclosure provides forming nanostructures with precision dimension control and minimum lithographic related errors for features with dimension under 14 nanometers and beyond. A self-aligned multiple spacer patterning (SAMSP) process is provided herein and the process utilizes minimum lithographic exposure process, but rather multiple deposition/etching process to incrementally reduce feature sizes formed in the mask along the manufacturing process, until a desired extreme small dimension nanostructures are formed in a mask layer.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: January 17, 2017
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Ying Zhang, Uday Mitra, Praburam Gopalraja, Srinivas D. Nemani, Hua Chung
  • Publication number: 20150371852
    Abstract: The present disclosure provides forming nanostructures with precision dimension control and minimum lithographic related errors for features with dimension under 14 nanometers and beyond. A self-aligned multiple spacer patterning (SAMSP) process is provided herein and the process utilizes minimum lithographic exposure process, but rather multiple deposition/etching process to incrementally reduce feature sizes formed in the mask along the manufacturing process, until a desired extreme small dimension nanostructures are formed in a mask layer.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 24, 2015
    Inventors: Ying ZHANG, Uday MITRA, Praburam GOPALRAJA, Srinivas D. NEMANI, Hua CHUNG
  • Patent number: 8101525
    Abstract: Methods for fabricating a semiconductor device having a lanthanum-family-based oxide layer are described. A gate stack having a lanthanum-family-based oxide layer is provided above a substrate. At least a portion of the lanthanum-family-based oxide layer is modified to form a lanthanum-family-based halide portion. The lanthanum-family-based halide portion is removed with a water vapor treatment.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 24, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Meihua Shen, Noel Sun, Nicolas Gani, Han-Hsiang Chen, Eric Pei, Weimin Zeng, Thorsten B. Lill, Uday Mitra, Ellie Y. Yieh
  • Publication number: 20100210112
    Abstract: Methods for fabricating a semiconductor device having a lanthanum-family-based oxide layer are described. A gate stack having a lanthanum-family-based oxide layer is provided above a substrate. At least a portion of the lanthanum-family-based oxide layer is modified to form a lanthanum-family-based halide portion. The lanthanum-family-based halide portion is removed with a water vapor treatment.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 19, 2010
    Applicant: Applied Materials, Inc.
    Inventors: Meihua Shen, Noel Sun, Nicolas Gani, Han-Hsiang Chen, Eric Pei, Weimin Zeng, Thorsten B. Lill, Uday Mitra, Ellie Y. Yieh
  • Patent number: 5250444
    Abstract: A method for rapid plasma hydrogenation of semiconductor devices is provided in which the hydrogenation is conducted in two steps, the first step being conducted at a hydrogenation temperature that is higher than the out-diffusion temperature at which a substantial amount of hydrogen diffuses out of said semiconductor device; and in the second step, the semiconductor device is cooled to a temperature at which out-diffusion is substantially avoided while the hydrogenation plasma is maintained.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: October 5, 1993
    Assignee: North American Philips Corporation
    Inventors: Babar Khan, Barbara A. Rossi, Uday Mitra