Patents by Inventor BRETT W. C. LIAO

BRETT W. C. LIAO 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).

  • Phototransistor with body-strapped base
    Patent number: 10553633
    Abstract: A photodetector includes a two-terminal bipolar phototransistor arranged on a substrate. The phototransistor includes a base, a collector, and an emitter. An electrical connection is made between the base and the local substrate near a region of the phototransistor. The electrical connection can be by way of metal interconnects.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: February 4, 2020
    Assignees: Wispro Technology Cosulting Corporation Limited
    Inventors: Klaus Y. J. Hsu, Brett W. C. Liao
  • PHOTOTRANSISTOR WITH BODY-STRAPPED BASE
    Publication number: 20150349186
    Abstract: A photosensing device with a photovoltage sensing mechanism, a graphene layer and a semiconductor layer. The graphene layer is sandwiched between the semiconductor layer and a substrate. The photovoltage sensing mechanism senses the photovoltage created by light impinging on the graphene-semiconductor heterojunction. The strength of the photovoltage is used to indicate the level of illumination of the impinging light.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 3, 2015
    Inventors: KLAUS Y. J. HSU, BRETT W. C. LIAO