Patents by Inventor David Hwang

David Hwang 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: 11437274
    Abstract: Apparatuses and methods to provide a fully self-aligned via are described. A first metallization layer comprises a set of first conductive lines extending along a first direction on a first insulating layer on a substrate, the set of first conductive lines recessed below a top portion of the first insulating layer. A capping layer is on the first insulating layer, and a second insulating layer is on the capping layer. A second metallization layer comprises a set of second conductive lines on the second insulating layer and on a third 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. At least one via is 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. The tapering angle of the via opening may be in a range of from about 60° to about 120°.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: September 6, 2022
    Assignee: Micromaterials LLC
    Inventors: Regina Freed, Madhur Sachan, Susmit Singha Roy, Gabriela Alva, Ho-yung David Hwang, Uday Mitra, El Mehdi Bazizi, Angada Bangalore Sachid, He Ren, Sushant Mittal
  • Patent number: 11437238
    Abstract: Methods and film stacks for extreme ultraviolet (EUV) lithography are described. The film stack comprises a substrate with a hard mask, bottom layer, middle layer and photoresist. Etching of the photoresist is highly selective to the middle layer and a modification of the middle layer allows for a highly selective etch relative to the bottom layer.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 6, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Nancy Fung, Chi-I Lang, Ho-yung David Hwang
  • Publication number: 20220238531
    Abstract: Apparatuses and methods to provide a patterned substrate are described. A plurality of patterned and spaced first lines and carbon material lines and formed on the substrate surface by selectively depositing and etching films extending in a first direction and films extending in a second direction that crosses the first direction to pattern the underlying structures.
    Type: Application
    Filed: April 14, 2022
    Publication date: July 28, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Tejinder Singh, Takehito Koshizawa, Abhijit Basu Mallick, Pramit Manna, Nancy Fung, Eswaranand Venkatasubramanian, Ho-Yung David Hwang, Samuel E. Gottheim
  • Publication number: 20220199401
    Abstract: Methods for depositing boron-containing films on a substrate are described. The substrate is exposed to a boron precursor and a plasma to form the boron-containing film (e.g., elemental boron, boron oxide, boron carbide, boron silicide, boron nitride). The exposures can be sequential or simultaneous. The boron-containing films are selectively deposited on one material (e.g., SiN or Si) rather than on another material (e.g., silicon oxide).
    Type: Application
    Filed: December 13, 2021
    Publication date: June 23, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Yung-Chen Lin, Chi-I Lang, Ho-yung David Hwang
  • Patent number: 11335690
    Abstract: Apparatuses and methods to provide a patterned substrate are described. A plurality of patterned and spaced first lines and carbon material lines and formed on the substrate surface by selectively depositing and etching films extending in a first direction and films extending in a second direction that crosses the first direction to pattern the underlying structures.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: May 17, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Tejinder Singh, Takehito Koshizawa, Abhijit Basu Mallick, Pramit Manna, Nancy Fung, Eswaranand Venkatasubramanian, Ho-yung David Hwang, Samuel E. Gottheim
  • Publication number: 20220074668
    Abstract: A controller includes a non-transitory computer readable medium configured to store information related to a target temperature of a wafer, a target temperature of a heating element, a temperature of the wafer, and a temperature of the heating element. The controller further includes a processor connected to the non-transitory computer readable medium, the processor configured to generate at least one heating signal during a baking process to adjust a duration of an entirety of the baking process in response to the temperature of the wafer and the temperature of the heating element.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 10, 2022
    Inventors: Tzung-Chen WU, Heng-Jen LEE, Ho-Yung David HWANG, Wen-Zhan ZHOU
  • Publication number: 20220075617
    Abstract: The subject technology detects a code commit at a code repository. The subject technology sends a request for a build job to a build server. The subject technology determines that the build job is completed. The subject technology sends a training request and user token to a proxy authenticator. The subject technology determines determining that the user token is validated. The subject technology sends a training request and the user token to a training job manager. Further, the subject technology determines determining that the training job is completed.
    Type: Application
    Filed: November 8, 2021
    Publication date: March 10, 2022
    Inventors: William Story, David Hwang
  • Publication number: 20220013624
    Abstract: Methods of forming and processing semiconductor devices are described. Certain embodiments relate to the formation of self-aligned DRAM capacitors. More particularly, certain embodiments relate to the formation of self-aligned DRAM capacitors utilizing the formation of self-aligned growth pillars. The pillars lead to greater capacitor heights, increase critical dimension uniformity, and self-aligned bottom and top contacts.
    Type: Application
    Filed: September 28, 2021
    Publication date: January 13, 2022
    Applicant: Micromaterials LLC
    Inventors: Uday Mitra, Regina Freed, Ho-yung David Hwang, Sanjay Natarajan, Lequn Liu
  • Publication number: 20220004105
    Abstract: Embodiments disclosed herein include a method of developing a metal oxo photoresist with a non-wet process. In an embodiment, the method comprises providing a substrate with the metal oxo photoresist into a chamber. In an embodiment, the metal oxo photoresist comprises exposed regions and unexposed regions, and the unexposed regions comprise a higher carbon concentration than the exposed regions. In an embodiment, the method further comprises flowing a gas into the chamber, wherein the gas reacts with the unexposed regions to produce a volatile byproduct.
    Type: Application
    Filed: June 16, 2021
    Publication date: January 6, 2022
    Inventors: Yuqiong Dai, Madhur Sachan, Regina Freed, Hoyung David Hwang
  • Patent number: 11216273
    Abstract: The subject technology detects a code commit at a code repository. The subject technology sends a request for a build job to a build server. The subject technology determines that the build job is completed. The subject technology sends a training request and user token to a proxy authenticator. The subject technology determines determining that the user token is validated. The subject technology sends a training request and the user token to a training job manager. Further, the subject technology determines determining that the training job is completed.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: January 4, 2022
    Assignee: Stripe, Inc.
    Inventors: William Story, David Hwang
  • Patent number: 11204200
    Abstract: A method includes supporting a wafer on a heating element, wherein the heating element is located in a baking chamber. The method further includes heating the wafer for a first duration using the heating element. The method further includes measuring a temperature of the heating element and a temperature of the wafer during the first duration to obtain temperature information. The method further includes adjusting an amount of heat provided by the heating element during the first duration, wherein the adjusting of the amount of heat includes decreasing the amount of heat provided by the heating element as a rate of change of the temperature information versus time increases.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: December 21, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Tzung-Chen Wu, Wen-Zhan Zhou, Heng-Jen Lee, Ho-Yung David Hwang
  • Publication number: 20210391215
    Abstract: Apparatuses and methods to provide fully self-aligned first metallization lines, M1, via, and second metallization lines, M2, are described. A first metallization line comprises a set of first conductive lines extending along a first direction on a first insulating layer on a substrate; a second metallization line comprising a set of second conductive lines on an etch stop layer above the first metallization line, the set of second conductive lines extending along a second direction that crosses the first direction at an angle; and at least one via between the first metallization line and the second metallization line, the at least one via comprising a via metallization layer, wherein the at least one via is self-aligned along the second direction to one of the first metallization lines and the at least one via is self-aligned along the first direction to one of the second metallization lines, the second direction crossing the first direction at an angle.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 16, 2021
    Applicant: Applied Materials, Inc.
    Inventors: Lili Feng, Yuqiong Dai, Madhur Sachan, Regina Freed, Ho-yung David Hwang
  • Publication number: 20210343592
    Abstract: Methods of forming and processing semiconductor devices which utilize the selective etching of aluminum oxide over silicon oxide, silicon nitride, aluminum oxide or zirconium oxide are described. Certain embodiments relate to the formation of self-aligned contacts for metal gate applications.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Applicant: Applied Materials, Inc.
    Inventors: Yung-Chen Lin, Qingjun Zhou, Ying Zhang, Ho-yung David Hwang
  • Patent number: 11164938
    Abstract: Methods of forming and processing semiconductor devices are described. Certain embodiments relate to the formation of self-aligned DRAM capacitors. More particularly, certain embodiments relate to the formation of self-aligned DRAM capacitors utilizing the formation of self-aligned growth pillars. The pillars lead to greater capacitor heights, increase critical dimension uniformity, and self-aligned bottom and top contacts.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: November 2, 2021
    Assignee: Micromaterials LLC
    Inventors: Uday Mitra, Regina Freed, Ho-yung David Hwang, Sanjay Natarajan, Lequn Liu
  • Patent number: 11139205
    Abstract: Described are semiconductor devices, methods of manufacturing, and methods for device patterning. More particularly, a subtractive interconnect patterning method is described. A subtractive interconnect patterning is used in place of damascene interconnect patterning.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: October 5, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Lei Zhong, Ho-yung David Hwang
  • Patent number: 11094589
    Abstract: Methods of forming and processing semiconductor devices which utilize the selective etching of aluminum oxide over silicon oxide, silicon nitride, aluminum oxide or zirconium oxide are described. Certain embodiments relate to the formation of self-aligned contacts for metal gate applications.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: August 17, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Yung-Chen Lin, Qingjun Zhou, Ying Zhang, Ho-yung David Hwang
  • Publication number: 20210193871
    Abstract: A reduction in leakage current and an increase in efficiency of III-nitride LEDs is obtained by sidewall passivation using atomic layer deposition of a dielectric. Atomic layer deposition is a hydrogen-free deposition method, which avoids problems associated with the effects of hydrogen on passivation and transparency.
    Type: Application
    Filed: October 31, 2018
    Publication date: June 24, 2021
    Applicant: The Regents of the University of California
    Inventors: Matthew S. Wong, David Hwang, Abdullah Alhassan, Steven P. DenBaars
  • Patent number: 11018280
    Abstract: Disclosed herein are systems and methods for reducing surface recombination losses in micro-LEDs. In some embodiments, a method includes increasing a bandgap in an outer region of a semiconductor layer by implanting ions in the outer region of the semiconductor layer and subsequently annealing the outer region of the semiconductor layer to intermix the ions with atoms within the outer region of the semiconductor layer. The semiconductor layer includes an active light emitting layer. A light outcoupling surface of the semiconductor layer has a diameter of less than 10 ?m. The outer region of the semiconductor layer extends from an outer surface of the semiconductor layer to a central region of the semiconductor layer that is shaded by a mask during the implanting of the ions.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: May 25, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Thomas Lauermann, Stephan Lutgen, David Hwang
  • Publication number: 20210134807
    Abstract: Apparatuses and methods to provide a patterned substrate are described. A plurality of patterned and spaced first lines and carbon material lines and formed on the substrate surface by selectively depositing and etching films extending in a first direction and films extending in a second direction that crosses the first direction to pattern the underlying structures.
    Type: Application
    Filed: January 12, 2021
    Publication date: May 6, 2021
    Applicant: Applied Materials, Inc.
    Inventors: Tejinder Singh, Takehito Koshizawa, Abhijit Basu Mallick, Pramit Manna, Nancy Fung, Eswaranand Venkatasubramanian, Ho-yung David Hwang, Samuel E. Gottheim
  • Publication number: 20210125864
    Abstract: A method of forming an interconnect structure for semiconductor devices is described. The method comprises etching a patterned interconnect stack for form first conductive lines and expose a top surface of a first etch stop layer; etching the first etch stop layer to form second conductive lines and expose a top surface of a barrier layer; and forming a self-aligned via.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 29, 2021
    Inventors: Hao Jiang, Chi Lu, He Ren, Chi-I Lang, Ho-yung David Hwang, Mehul Naik