Patents by Inventor Wei-Kai Shen

Wei-Kai Shen 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).

  • Semiconductor device and manufacturing method thereof
    Patent number: 9070708
    Abstract: A semiconductor device including a substrate, a heterojunction body, a passivation layer, a source contact, a drain contact, and a gate contact. The heterojunction body disposed on or above the substrate includes a first semiconductor layer, a mask layer, a regrowth layer, and a second semiconductor layer. The first semiconductor layer is disposed on or above the substrate. The mask layer is disposed on or above a portion of the first semiconductor layer. The regrowth layer disposed on the first semiconductor layer and adjacent to the mask layer includes a main portion and at least one inclined portion. The second semiconductor layer is disposed on the mask layer and the regrowth layer. The passivation layer is disposed on the second semiconductor layer. The gate contact is disposed on the passivation layer, between the source contact and the drain contact, and at least above the inclined portion of the regrowth layer.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 30, 2015
    Assignees: NATIONAL CENTRAL UNIVERSITY, DELTA ELECTRONICS, INC.
    Inventors: Jen-Inn Chyi, Geng-Yen Lee, Wei-Kai Shen, Ching-Chuan Shiue, Tai-Kang Shing
  • SEMICONDUCTOR DEVICE AND MANUFCTURING METHOD THEREOF
    Publication number: 20140264450
    Abstract: A semiconductor device including a substrate, a heterojunction body, a passivation layer, a source contact, a drain contact, and a gate contact. The heterojunction body disposed on or above the substrate includes a first semiconductor layer, a mask layer, a regrowth layer, and a second semiconductor layer. The first semiconductor layer is disposed on or above the substrate. The mask layer is disposed on or above a portion of the first semiconductor layer. The regrowth layer disposed on the first semiconductor layer and adjacent to the mask layer includes a main portion and at least one inclined portion. The second semiconductor layer is disposed on the mask layer and the regrowth layer. The passivation layer is disposed on the second semiconductor layer. The gate contact is disposed on the passivation layer, between the source contact and the drain contact, and at least above the inclined portion of the regrowth layer.
    Type: Application
    Filed: January 27, 2014
    Publication date: September 18, 2014
    Applicants: DELTA ELECTRONICS, INC., National Central University
    Inventors: Jen-Inn CHYI, Geng-Yen LEE, Wei-Kai SHEN, Ching-Chuan SHIUE, Tai-Kang SHING
  • Device and method for detecting type of fan
    Patent number: 8368338
    Abstract: This invention provides a device and method for detecting a type of a fan. The device for detecting a type of a fan includes a detector and a voltage controller. The detector is used for detecting and comparing a control voltage with a reference voltage to generate a comparison signal and transmitting the comparison signal to the voltage controller. The voltage controller outputs a variable voltage or a constant voltage to a voltage input terminal of a fan according to the comparison signal. The voltage controller can include an integrator for integrating a modulation signal and outputting the variable voltage.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 5, 2013
    Assignee: Pegatron Corporation
    Inventors: Wei-Kai Shen, Kuan-Yin Lin
  • Device and Method for Detecting Type of Fan
    Publication number: 20110156630
    Abstract: This invention provides a device and method for detecting a type of a fan. The device for detecting a type of a fan includes a detector and a voltage controller. The detector is used for detecting and comparing a control voltage with a reference voltage to generate a comparison signal and transmitting the comparison signal to the voltage controller. The voltage controller outputs a variable voltage or a constant voltage to a voltage input terminal of a fan according to the comparison signal. The voltage controller can include an integrator for integrating a modulation signal and outputting the variable voltage.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 30, 2011
    Applicant: PEGATRON CORPORATION
    Inventors: Wei-Kai Shen, Kuan-Yin Lin