Patents by Inventor Francis Edward Hawe

Francis Edward Hawe 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: 8377757
    Abstract: A transient voltage suppressor (TVS) device includes a semiconductor substrate of a first conductivity type, and a first and a second semiconductor regions of a second conductivity type overlying the semiconductor substrate. A semiconductor layer of the second conductivity type overlies the first and the second semiconductor regions. The TVS device has a first trench extending through the semiconductor layer and the first semiconductor region and into the semiconductor substrate, and a fill material of the second conductivity type disposed in the first trench. A clamping diode in the TVS device has a junction between an out-diffused region from the fill material and a portion of the semiconductor substrate. The TVS device also includes a first P-N diode formed in a first portion of the semiconductor layer, and a second P-N diode having a junction between the second semiconductor region and the semiconductor substrate.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Shanghai SIM-BCD Semiconductor Manufacturing Limited
    Inventors: Francis Edward Hawe, Jinsui Liang, Xiaoqiang Cheng, Xianfeng Liu
  • Publication number: 20110266592
    Abstract: A transient voltage suppressor (TVS) device includes a semiconductor substrate of a first conductivity type, and a first and a second semiconductor regions of a second conductivity type overlying the semiconductor substrate. A semiconductor layer of the second conductivity type overlies the first and the second semiconductor regions. The TVS device has a first trench extending through the semiconductor layer and the first semiconductor region and into the semiconductor substrate, and a fill material of the second conductivity type disposed in the first trench. A clamping diode in the TVS device has a junction between an out-diffused region from the fill material and a portion of the semiconductor substrate. The TVS device also includes a first P-N diode formed in a first portion of the semiconductor layer, and a second P-N diode having a junction between the second semiconductor region and the semiconductor substrate.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 3, 2011
    Inventors: Francis Edward Hawe, Jinsui Liang, Xiaoqiang Cheng, Xianfeng Liu
  • Patent number: 7187536
    Abstract: A structure and method are provided for reducing the equivalent series resistance of a capacitor. A capacitor includes one or more conductive interconnections contacting an active region of a first conductive plate of the capacitor at a plurality of locations along a lengthwise direction, such that every portion of the active region of the first conductive plate lies within a maximum distance from one of the locations, the maximum distance being less than the lateral dimension of the active region.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: March 6, 2007
    Assignee: Tessera, Inc.
    Inventor: Francis Edward Hawe
  • Patent number: 7170736
    Abstract: A capacitor is provided having a first electrode including a layer of low-resistance non-silicon material. The capacitor includes a layer of silicon formed on the low-resistance material layer and a capacitor dielectric formed on the layer of silicon. A second electrode is formed on the capacitor dielectric, the second electrode including at least a material selected from the group consisting of metals, low-resistance compounds of metals, and deposited semiconductors having a dopant concentration of at least 1×1017 cm?3.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: January 30, 2007
    Assignee: Tessera, Inc.
    Inventors: Francis Edward Hawe, Visith Thipphavong