Patents by Inventor Yi-Jui Chang

Yi-Jui Chang 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: 20240105879
    Abstract: A light-emitting diode and a manufacturing method thereof are provided. The manufacturing method includes following steps. First, an LED wafer is provided. The LED wafer includes a substrate and a light-emitting semiconductor stacking structure positioned on the surface of the substrate. The light-emitting semiconductor stacking structure includes a first type semiconductor layer, an active layer, and a second type semiconductor layer from a side of the substrate. Second, dicing lanes are defined on the upper surface of the LED wafer. Third, dicing is performed along the dicing lanes of the substrate using a laser. The laser is focused on the lower surface of the substrate to form a surface hole and focused inside the substrate to form an internal hole. The diameter of the surface hole is greater than the diameter of the internal hole. Fourth, the LED wafer is separated into LED chips along the dicing lanes.
    Type: Application
    Filed: November 29, 2023
    Publication date: March 28, 2024
    Applicant: Quanzhou sanan semiconductor technology Co., Ltd.
    Inventors: TSUNG-MING LIN, CHUNG-YING CHANG, YI-JUI HUANG, YU-TSAI TENG
  • Publication number: 20230299071
    Abstract: An integrated circuit (IC) device includes a power control circuit including a first transistor and a second transistor of different types. The first transistor includes a gate terminal configured to receive a control signal, a first terminal electrically coupled to a first power supply node, and a second terminal electrically coupled to a second power supply node. The second transistor includes a gate terminal configured to receive the control signal, and first and second terminals configured to receive a predetermined voltage. The first transistor is configured to, in response to the control signal, connect or disconnect the first and second power supply nodes.
    Type: Application
    Filed: May 25, 2023
    Publication date: September 21, 2023
    Inventors: Yi-Jui CHANG, Jung-Chan YANG
  • Patent number: 11688731
    Abstract: An integrated circuit (IC) device includes a functional circuit electrically coupled to a first power supply node and operable by a first power supply voltage on the first power supply node, and a power control circuit including a first transistor and a second transistor of different types. The first transistor includes a gate terminal configured to receive a control signal, a first terminal electrically coupled to the first power supply node, and a second terminal electrically coupled to a second power supply node. The second transistor includes a gate terminal configured to receive the control signal, and first and second terminals configured to receive a predetermined voltage. The first transistor is configured to, in response to the control signal, connect or disconnect the first and second power supply nodes to provide or cutoff power supply to the functional circuit.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: June 27, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yi-Jui Chang, Jung-Chan Yang
  • Publication number: 20220246599
    Abstract: An integrated circuit (IC) device includes a functional circuit electrically coupled to a first power supply node and operable by a first power supply voltage on the first power supply node, and a power control circuit including a first transistor and a second transistor of different types. The first transistor includes a gate terminal configured to receive a control signal, a first terminal electrically coupled to the first power supply node, and a second terminal electrically coupled to a second power supply node. The second transistor includes a gate terminal configured to receive the control signal, and first and second terminals configured to receive a predetermined voltage. The first transistor is configured to, in response to the control signal, connect or disconnect the first and second power supply nodes to provide or cutoff power supply to the functional circuit.
    Type: Application
    Filed: April 15, 2021
    Publication date: August 4, 2022
    Inventors: Yi-Jui CHANG, Jung-Chan YANG
  • Publication number: 20080128482
    Abstract: This system of identification and labeling is set on the container or package of drugs and contains drug identification units for the identification of the drug name, including identification units of manufacturing batch number and time. The identification unit of manufacturing batch number is used for the identification of the batch number of the drug while the time identification unit for the identification of the expiry date of the drug, quickly making the consumers understanding the manufacturing batch number and the expiry date of the drug through reading the identification labels so as to effectively control the quality and conservation of drugs.
    Type: Application
    Filed: July 13, 2007
    Publication date: June 5, 2008
    Inventors: Chao-Hsiang Chen, Yi-Jui Chang, Mei-Limg Chen