Patents by Inventor Christopher Siu

Christopher Siu 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: 11609505
    Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for verification and re-use of process fluids. The apparatus generally includes a tool for performing lithography, and a recirculation path coupled to the tool. The recirculation path generally includes a collection unit coupled at first end to a first end of the tool, and a probe coupled at a first end to a second end of the collection unit, the probe for determining one or more characteristics of a fluid flowing from the tool. The recirculation path of the apparatus further generally includes a purification unit coupled at a first end to a third end of the collection unit, the purification unit further coupled at a second end to a second end of the probe, the purification unit for changing a characteristic of the fluid.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: March 21, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Mangesh Ashok Bangar, Gautam Pisharody, Lancelot Huang, Alan L. Tso, Douglas A. Buchberger, Jr., Huixiong Dai, Dmitry Lubomirsky, Srinivas D. Nemani, Christopher Siu Wing Ngai
  • Publication number: 20220317579
    Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for verification and re-use of process fluids. The apparatus generally includes a tool for performing lithography, and a recirculation path coupled to the tool. The recirculation path generally includes a collection unit coupled at first end to a first end of the tool, and a probe coupled at a first end to a second end of the collection unit, the probe for determining one or more characteristics of a fluid flowing from the tool. The recirculation path of the apparatus further generally includes a purification unit coupled at a first end to a third end of the collection unit, the purification unit further coupled at a second end to a second end of the probe, the purification unit for changing a characteristic of the fluid.
    Type: Application
    Filed: April 5, 2021
    Publication date: October 6, 2022
    Inventors: Mangesh Ashok BANGAR, Gautam PISHARODY, Lancelot HUANG, Alan L. TSO, Douglas A. BUCHBERGER, JR., Huixiong DAI, Dmitry LUBOMIRSKY, Srinivas D. NEMANI, Christopher Siu Wing Ngai
  • Publication number: 20210088896
    Abstract: Embodiments of the disclosure relate to lithography simulation and optical proximity correction. Field-guided post exposure bake processes have enabled improved lithography performance and various parameters of such processes are included in the optical proximity correction models generated in accordance with the embodiments described herein. An optical proximity correction model includes one or more parameters of anisotropic acid etching characteristics, ion generation and/or movement, electron movement, hole movement, and chemical reaction characteristics.
    Type: Application
    Filed: August 3, 2020
    Publication date: March 25, 2021
    Inventors: Huixiong DAI, Mangesh Ashok BANGAR, Pinkesh Rohit SHAH, Srinivas D. NEMANI, Steven Hiloong WELCH, Christopher Siu Wing NGAI, Ellie Y. YIEH
  • Publication number: 20210041785
    Abstract: Methods and apparatuses for minimizing line edge/width roughness in lines formed by photolithography are provided. A method of processing a substrate is provided. The method includes applying a photoresist layer that includes a photoacid generator to a multi-layer disposed on the substrate. The multi-layer includes an underlayer. Further, the method includes exposing a first portion of the photoresist layer unprotected by a photomask to a radiation light in a lithographic exposure process. A thermal energy is provided to the photoresist layer and the multi-layer in a post-exposure baking process. The multi-layer is disposed beneath the photoresist layer. An electric field or a magnetic field is applied to photoresist layer and the multi-layer while performing the post-exposure baking process. An additive within the underlayer is driven in a vertical direction into the photoresist layer. The additive assist in distribution of a photoacid throughout the photoresist layer during the post-exposure baking process.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 11, 2021
    Inventors: Huixiong DAI, Mangesh Ashok BANGAR, Pinkesh Rohit SHAH, Christopher Siu Wing NGAI, Srinivas D. NEMANI, Ellie Y. YIEH
  • Patent number: 8323451
    Abstract: A system and a method for self-aligned dual patterning are described. The system includes a platform for supporting a plurality of process chambers. An etch process chamber coupled to the platform. An ultra-violet radiation photo-resist curing process chamber is also coupled to the platform.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 4, 2012
    Assignee: Applied Materials, Inc.
    Inventor: Christopher Siu Wing Ngai
  • Patent number: 8293460
    Abstract: Methods to pattern features in a substrate layer by exposing a photoresist layer more than once. In one embodiment, a single reticle may be exposed more than once with an overlay offset implemented between successive exposures to reduce the half pitch of the reticle. In particular embodiments, these methods may be employed to reduce the half pitch of the features printed with 65 nm generation lithography equipment to achieve 45 nm lithography generation CD and pitch performance.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 23, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Hui W. Chen, Chorng-Ping Chang, Yongmei Chen, Huixiong Dai, Jiahua Yu, Susie X. Yang, Xumou Xu, Christopher D. Bencher, Raymond Hoiman Hung, Michael P. Duane, Christopher Siu Wing Ngai, Jen Shu, Kenneth MacWilliams
  • Publication number: 20110203733
    Abstract: A system and a method for self-aligned dual patterning are described. The system includes a platform for supporting a plurality of process chambers. An etch process chamber coupled to the platform. An ultra-violet radiation photo-resist curing process chamber is also coupled to the platform.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Inventor: Christopher Siu Wing Ngai
  • Patent number: 7935464
    Abstract: A system and a method for self-aligned dual patterning are described. The system includes a platform for supporting a plurality of process chambers. An etch process chamber coupled to the platform. An ultra-violet radiation photo-resist curing process chamber is also coupled to the platform.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: May 3, 2011
    Assignee: Applied Materials, Inc.
    Inventor: Christopher Siu Wing Ngai
  • Publication number: 20100112483
    Abstract: A system and a method for self-aligned dual patterning are described. The system includes a platform for supporting a plurality of process chambers. An etch process chamber coupled to the platform. An ultra-violet radiation photo-resist curing process chamber is also coupled to the platform.
    Type: Application
    Filed: October 30, 2008
    Publication date: May 6, 2010
    Inventor: CHRISTOPHER Siu Wing Ngai
  • Patent number: 7702296
    Abstract: A radio frequency (RF) transmit/receive switch. The transmit/receive switch comprises an impedance matching circuit and a voltage scaling circuit. The impedance matching circuit matches an incoming RF signal to a low noise amplifier and an outgoing RF signal from a power amplifier. The voltage scaling circuit, coupled to the impedance matching circuit, the power amplifier, and the low noise amplifier, attenuates the outgoing RF signal to a scaled signal within a breakdown voltage of a transistor device in the low noise amplifier during transmission of the outgoing RF signal.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: April 20, 2010
    Assignee: Mediatek USA Inc.
    Inventor: Christopher Siu
  • Publication number: 20090311635
    Abstract: Methods to pattern features in a substrate layer by exposing a photoresist layer more than once. In one embodiment, a single reticle may be exposed more than once with an overlay offset implemented between successive exposures to reduce the half pitch of the reticle. In particular embodiments, these methods may be employed to reduce the half pitch of the features printed with 65 nm generation lithography equipment to achieve 45 nm lithography generation CD and pitch performance.
    Type: Application
    Filed: December 19, 2008
    Publication date: December 17, 2009
    Inventors: HUI W. CHEN, CHORNG-PING CHANG, YONGMEI CHEN, HUIXIONG DAI, JIAHUA YU, SUSIE X. YANG, XUMOU XU, CHRISTOPHER D. BENCHER, RAYMOND HOIMAN HUNG, MICHAEL P. DUANE, CHRISTOPHER SIU WING NGAI, JEN SHU, KENNETH MACWILLIAMS
  • Publication number: 20090036065
    Abstract: A radio frequency (RF) transmit/receive switch. The transmit/receive switch comprises an impedance matching circuit and a voltage scaling circuit. The impedance matching circuit matches an incoming RF signal to a low noise amplifier and an outgoing RF signal from a power amplifier. The voltage scaling circuit, coupled to the impedance matching circuit, the power amplifier, and the low noise amplifier, attenuates the outgoing RF signal to a scaled signal within a breakdown voltage of a transistor device in the low noise amplifier during transmission of the outgoing RF signal.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 5, 2009
    Applicant: CRYSTALMEDIA TECHNOLOGY, INC.
    Inventor: Christopher Siu