Patents by Inventor Li Ching Yang

Li Ching Yang 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: 11961912
    Abstract: The present application provides a semiconductor device and the method of making the same. The method includes recessing a fin extending from a substrate, forming a base epitaxial feature on the recessed fin, forming a bar-like epitaxial feature on the base epitaxial feature, and forming a conformal epitaxial feature on the bar-like epitaxial feature. The forming of the bar-like epitaxial feature includes in-situ doping the bar-like epitaxial feature with an n-type dopant at a first doping concentration. The forming of the conformal epitaxial feature includes in-situ doping the conformal epitaxial feature with a second doping concentration greater than the first doping concentration.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: April 16, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chun-An Lin, Wei-Yuan Lu, Feng-Cheng Yang, Tzu-Ching Lin, Li-Li Su
  • Patent number: 11932714
    Abstract: A copolymer, a film composition and a composite material employing the same are provided. The copolymer is a copolymerization product of a composition, wherein the composition includes a monomer (a), a monomer (b) and a monomer (c). The monomer (a) is a compound having a structure represented by Formula (I), the monomer (b) is a compound having a structure represented by Formula (II), and the monomer (c) is a compound having a structure represented by Formula (III) wherein R1, R2, R3, R4, R5 and R6 are as defined in specification.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: March 19, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yen-Yi Chu, Yun-Ching Lee, Li-Chun Liang, Wei-Ta Yang, Hsiang-Chin Juan
  • Publication number: 20230305052
    Abstract: An insulation resistance detection circuit is coupled to a positive end and a negative end of a DC power source, and is used to detect a positive insulation resistance between the positive end and a ground point and detect a negative insulation resistance between the negative end and the ground point. A detection unit sets a first estimated resistance and a second estimated resistance, and acquires a first voltage based on turning on the switch and acquires a second voltage based on turning off the switch. The detection unit calculates a third voltage and a fourth voltage according to the first estimated resistance and the second estimated resistance so as to detect the positive insulation resistance and the negative insulation resistance when the third voltage is equal to the first voltage and the fourth voltage is equal to the second voltage.
    Type: Application
    Filed: August 22, 2022
    Publication date: September 28, 2023
    Inventors: Li-Ching YANG, Wen-Lung HUANG, Sheng-Hua LI
  • Patent number: 11714112
    Abstract: A detection apparatus for unbalanced DC link capacitor voltage, the DC link provides a DC voltage and includes a plurality of capacitors coupled in series to two ends of the DC link and a plurality of balanced resistors coupled in series to two ends of the DC link and corresponding to the capacitors. The detection apparatus includes a plurality of sense resistors and a current sensor. One end of each sense resistor is coupled to a common-connected node of two capacitors, and the other end thereof is coupled to a common-connected node of two balanced resistors. The current sensor is coupled to one of the sense resistors and measures a current value of a current flowing through the sense resistor coupled to the current sensor.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: August 1, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Li-Ching Yang, Wen-Lung Huang, Sheng-Hua Li
  • Patent number: 11581885
    Abstract: A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: February 14, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Li-Ching Yang, Wen-Lung Huang, Sheng-Hua Li
  • Publication number: 20210373058
    Abstract: A detection apparatus for unbalanced DC link capacitor voltage, the DC link provides a DC voltage and includes a plurality of capacitors coupled in series to two ends of the DC link and a plurality of balanced resistors coupled in series to two ends of the DC link and corresponding to the capacitors. The detection apparatus includes a plurality of sense resistors and a current sensor. One end of each sense resistor is coupled to a common-connected node of two capacitors, and the other end thereof is coupled to a common-connected node of two balanced resistors. The current sensor is coupled to one of the sense resistors and measures a current value of a current flowing through the sense resistor coupled to the current sensor.
    Type: Application
    Filed: February 22, 2021
    Publication date: December 2, 2021
    Inventors: Li-Ching YANG, Wen-Lung HUANG, Sheng-Hua LI
  • Publication number: 20210203317
    Abstract: A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.
    Type: Application
    Filed: September 3, 2020
    Publication date: July 1, 2021
    Inventors: Li-Ching YANG, Wen-Lung HUANG, Sheng-Hua LI
  • Publication number: 20020095970
    Abstract: A cutting tool includes two handles coupled to two cutter blades for forcing the cutter blades to cut the objects. Two or more poles are secured to the handles and extended outward beyond the handles for wire-bending purposes. One of the cutter blades includes a number of teeth and has a lever. A pawl is pivotally secured to one handle and biased to engage with the teeth. An actuator bar is pivotally secured to the other handle and has a post slidably received in the lever for selectively engaging with the lever to force the cutting edges to cut the object.
    Type: Application
    Filed: January 22, 2001
    Publication date: July 25, 2002
    Inventor: Li Ching Yang