Patents by Inventor Patrick Guo Qiang Lo

Patrick Guo Qiang Lo 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: 20140159180
    Abstract: According to embodiments of the present invention, a semiconductor resistor structure is provided. The semiconductor resistor structure includes a substrate, a first region of a first conductivity type in the substrate, a second region of the first conductivity type in the substrate, the first region and the second region arranged one over the other, and an intermediate region of a second conductivity type in between the first region and the second region, wherein at least one gap is defined through the intermediate region and overlapping with the first region and the second region. According to further embodiments of the present invention, a semiconductor photomultiplier device is also provided.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Inventors: Fei Sun, Ning Duan, Patrick Guo-Qiang Lo
  • Publication number: 20140153600
    Abstract: An optical light source is provided. The optical light source includes a waveguide including two reflectors arranged spaced apart from each other to define an optical cavity therebetween, an optical gain medium, and a coupling structure arranged to couple light between the optical cavity and the optical gain medium.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 5, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Xianshu LUO, Junfeng SONG, Haifeng ZHOU, Tsung-Yang LIOW, Mingbin YU, Patrick Guo-Qiang LO
  • Publication number: 20140138789
    Abstract: According to one aspect of the invention, there is provided a pin photodetector comprising a dopant diffusion barrier layer disposed within an active light absorbing region of the pin photodetector.
    Type: Application
    Filed: October 8, 2013
    Publication date: May 22, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Andy Eu-Jin Lim, Tsung-Yang Liow, Patrick Guo-Qiang Lo
  • Publication number: 20140127842
    Abstract: According to embodiments of the present invention, a method for forming an optical modulator is provided. The method includes providing a substrate, implanting dopants of a first conductivity type into the substrate to form a first doped region, implanting dopants of a second conductivity type into the substrate to form a second doped region, wherein a portion of the second doped region is formed over and overlaps with a portion of the first doped region to form a junction between the respective portions of the first doped region and the second doped region, and wherein a remaining portion of the second doped region is located outside of the junction, and forming a ridge waveguide, wherein the ridge waveguide overlaps with at least a part of the junction.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Jun-Feng Song, Xianshu Luo, Xiaoguang Tu, Patrick Guo-Qiang Lo, Mingbin Yu
  • Patent number: 7682914
    Abstract: A method is described to form a MOSFET with a fully silicided gate electrode and fully silicided, raised S/D elements that are nearly coplanar to allow a wider process margin when forming contacts to silicided regions. An insulator block layer is formed over STI regions and a conformal silicidation stop layer such as Ti/TiN is disposed on the insulator block layer and active region. A polysilicon layer is deposited on the silicidation stop layer and is planarized by a CMP process to form raised S/D elements. An oxide hardmask on the gate electrode is removed to produce a slight recess between the spacers. A silicidation process yields a gate electrode and raised S/D elements comprised of NiSi. Optionally, a recess is formed in the substrate between an insulator block mask and spacer and a Schottky barrier is used instead of a silicidation stop layer to form a Schottky Barrier MOSFET.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 23, 2010
    Assignee: Agency for Science, Technololgy, and Research
    Inventors: Patrick Guo Qiang Lo, Wei Yip Loh, Ranganathan Nagarajan, Narayanan Balasubramanian
  • Patent number: 7294890
    Abstract: A method is described to form a MOSFET with a fully silicided gate electrode and fully silicided, raised S/D elements that are nearly coplanar to allow a wider process margin when forming contacts to silicided regions. An insulator block layer is formed over STI regions and a conformal silicidation stop layer such as Ti/TiN is disposed on the insulator block layer and active region. A polysilicon layer is deposited on the silicidation stop layer and is planarized by a CMP process to form raised S/D elements. An oxide hardmask on the gate electrode is removed to produce a slight recess between the spacers. A silicidation process yields a gate electrode and raised S/D elements comprised of NiSi. Optionally, a recess is formed in the substrate between an insulator block mask and spacer and a Schottky barrier is used instead of a silicidation stop layer to form a Schottky Barrier MOSFET.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: November 13, 2007
    Assignee: Agency for Science, Technology and Research
    Inventors: Patrick Guo Qiang Lo, Wei Yip Loh, Ranganathan Nagarajan, Narayanan Balasubramanian