Patents by Inventor Andrew C. Chang

Andrew C. 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: 20240136160
    Abstract: Embodiments of the present disclosure generally relate to methods and apparatus for measuring and controlling local impedances at a substrate support in a plasma processing chamber during processing of a substrate. A substrate support includes a plurality of substrate support pins wherein the radio frequency voltage, current and phase of each of the plurality of substrate support pins are measured and impedances of the support pins are adjusted in real time. Each of the substrate support pins is coupled to an associated adjustable impedance circuit that may be remotely controlled. In one embodiment a variable capacitor is used to adjust the impedance of the impedance circuit coupled to the associated substrate support pin and may be remotely adjusted with a stepper motor.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Inventors: Zheng John YE, Andrew C. LAM, Zeqiong ZHAO, Jianhua ZHOU, Hshiang AN, Suhail ANWAR, Yoshitake NAKAJIMA, Fu-ting CHANG
  • Patent number: 11944130
    Abstract: A vaporizer device includes various modular components. The vaporizer device includes a first subassembly. The first subassembly includes a cartridge connector that secures a vaporizer cartridge to the vaporizer device and includes at least two receptacle contacts that electrically communicate with the vaporizer cartridge. The vaporizer device includes a second subassembly. The second subassembly includes a skeleton defining a rigid tray that retains at least a power source. The vaporizer device also includes a third subassembly. The third subassembly includes a plurality of charging contacts that supply power to the power source, and an end cap that encloses an end of the vaporizer device.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: April 2, 2024
    Assignee: JUUL Labs, Inc.
    Inventors: Samuel C. Anderson, Wei-Ling Chang, Brandon Cheung, Steven Christensen, Joseph Chun, Joseph R. Fisher, Jr., Nicholas J. Hatton, Kevin Lomeli, James Monsees, Andrew L. Murphy, Claire O'Malley, John R. Pelochino, Hugh Pham, Vipul V. Rahane, Matthew J. Taschner, Val Valentine, Kenneth Wong
  • Publication number: 20240096776
    Abstract: A package substrate is provided and includes a core board body and a first circuit structure and a second circuit structure disposed on opposite sides of the core board body, where the number of wiring layers of the second circuit structure is different from the number of wiring layers of the first circuit structure, so that the package substrate is asymmetrical. The first circuit structure and the second circuit structure are designed according to the thickness and coefficient of thermal expansion of the first dielectric layer of the first circuit structure and the second dielectric layer of the second circuit structure, so as to prevent the problem of warping from occurring to the package substrate.
    Type: Application
    Filed: August 31, 2023
    Publication date: March 21, 2024
    Inventors: Andrew C. CHANG, Min-Yao CHEN, Sung-Kun LIN
  • Publication number: 20240096721
    Abstract: An electronic package of which the manufacturing method is to dispose an electronic element on a circuit portion, encapsulate the electronic element with an Ajinomoto build-up film (ABF) used as an encapsulating layer, form a wiring layer on the encapsulating layer, and form a conductive via in the encapsulating layer. Therefore, the wiring layer can be well bonded onto the encapsulating layer as the ABF material is used as the encapsulating layer.
    Type: Application
    Filed: August 28, 2023
    Publication date: March 21, 2024
    Inventors: Chien-Kuang LAI, Andrew C. CHANG, Min-Yao CHEN
  • Publication number: 20240090733
    Abstract: A method of operating a mobile cleaning robot can include navigating the mobile cleaning robot within an environment. Whether a movement condition is satisfied can be determined and a mopping pad tray can be moved relative to a body of the mobile cleaning robot between a cleaning position and a stored position in response to receipt of a command to move the mopping pad tray when the movement condition is satisfied.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 21, 2024
    Inventors: Matthew Clements, Varun Malhotra, Landon Unninayar, Brian Cleve Benson, JR., Andrew Graziani, Shiwei Wang, Thomas C. Chang, Dan Wivagg
  • Publication number: 20240021438
    Abstract: A manufacturing method of a package substrate is provided, the manufacturing method includes forming a first circuit layer on a first metal layer; forming a dielectric layer on the first metal layer and the first circuit layer; forming a second metal layer on the dielectric layer; forming a plurality of conductive blind vias in the dielectric layer and forming a second circuit layer on the second metal layer, where the plurality of conductive blind vias are electrically connected to the first circuit layer and the second circuit layer; and removing the first metal layer and a portion of the second metal layer simultaneously. Therefore, in the manufacturing method, the first metal layer and the second metal layer can be removed by one etching process, such that the time for manufacturing the package substrate can be greatly reduced to increase production quantity.
    Type: Application
    Filed: May 17, 2023
    Publication date: January 18, 2024
    Inventors: Andrew C. CHANG, Min-Yao CHEN, Sung-Kun LIN
  • Publication number: 20230298986
    Abstract: A package substrate and the manufacturing method thereof are provided. The method includes encapsulating a circuit layer and a conductive pillar on the circuit layer with an insulating layer, and then forming a groove in the insulating layer corresponding to the conductive pillar, so as to form a routing layer in the groove, so there is no need for drilling to make blind vias. Therefore, the alignment problem of conventional circuits and conductive blind vias can be avoided.
    Type: Application
    Filed: March 8, 2023
    Publication date: September 21, 2023
    Inventors: Min-Yao CHEN, Sung-Kun LIN, Andrew C. CHANG
  • Publication number: 20230290744
    Abstract: An electronic package is provided, including a package substrate in which a circuit layer and a surface treatment layer are embedded in an insulating portion, and the surface treatment layer is coupled to a top surface of the circuit layer, but is not formed on a side surface of the circuit layer. Therefore, the circuit layer can maintain the original predetermined line spacing so that it is beneficial to be designed with fine line spacing/line width.
    Type: Application
    Filed: March 7, 2023
    Publication date: September 14, 2023
    Inventors: Min-Yao CHEN, Andrew C. CHANG
  • Publication number: 20230282556
    Abstract: A substrate structure is provided, in which an insulator encapsulates a conductive pillar that is a single solid pillar body, and at least one wiring layer electrically connected to the conductive pillar is arranged on the insulator. Therefore, the conductive pillar is designed as a single solid pillar body to meet the requirements of thin lines, fine spacing and high-density contacts.
    Type: Application
    Filed: March 3, 2023
    Publication date: September 7, 2023
    Inventors: Min-Yao CHEN, Pei-Ching LI, Andrew C. CHANG
  • Patent number: 11693467
    Abstract: Embodiments disclosed herein relate to reducing a power consumption of an electronic device while maintaining some functionality of the electronic device while the electronic device is in a low power mode. The device may be in the low power mode due to a battery level being below a threshold. If the battery level is below the threshold, the electronic device may enter the low power mode. However, before entering the low power mode, some functionality of an application processor may be transferred to a communication controller. Once the functionality is transferred, the application processor may be disabled to reduce power consumption while maintaining functionality of the application processor. The electronic device may also utilize various communication protocols to communicate with a peripheral device. Even though the electronic device may be in the low power mode, the communication controller may be used to cause the peripheral device to perform various actions.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: July 4, 2023
    Assignee: Apple Inc.
    Inventors: Langford M. Wasada, Arun Unkn, Andrew C. Chang, Sriram Hariharan, Robert W. Brumley, Raman S. Thiara
  • Publication number: 20230061200
    Abstract: Embodiments disclosed herein relate to reducing a power consumption of an electronic device while maintaining some functionality of the electronic device while the electronic device is in a low power mode. The device may be in the low power mode due to a battery level being below a threshold. If the battery level is below the threshold, the electronic device may enter the low power mode. However, before entering the low power mode, some functionality of an application processor may be transferred to a communication controller. Once the functionality is transferred, the application processor may be disabled to reduce power consumption while maintaining functionality of the application processor. The electronic device may also utilize various communication protocols to communicate with a peripheral device. Even though the electronic device may be in the low power mode, the communication controller may be used to cause the peripheral device to perform various actions.
    Type: Application
    Filed: September 1, 2021
    Publication date: March 2, 2023
    Inventors: Langford M. Wasada, Arun Unkn, Andrew C. Chang, Sriram Hariharan, Robert W. Brumley, Raman S. Thiara
  • Patent number: 11469201
    Abstract: The invention provides a semiconductor package and a method for fabricating a base for a semiconductor package. The semiconductor package includes a conductive trace embedded in a base. A semiconductor device is mounted on the conductive trace via a conductive structure.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 11, 2022
    Assignee: MediaTek Inc.
    Inventors: Tzu-Hung Lin, Wen-Sung Hsu, Ta-Jen Yu, Andrew C. Chang
  • Publication number: 20220077723
    Abstract: A wireless power system may include an accessory configured to transfer or relay wireless power to a portable electronic device. The portable electronic device may include wireless charging circuitry and sensors configured to detect compatible accessories currently coupled with the portable electronic device. The portable electronic device performs wireless charging or related functions in accordance with the coupled accessories.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 10, 2022
    Inventors: Parin Patel, Daniel P. Kumar, Andrew C. Chang
  • Publication number: 20220077724
    Abstract: A wireless power system may include an accessory configured to transfer or relay wireless power to a portable electronic device. The portable electronic device may include wireless charging circuitry and sensors configured to detect compatible accessories currently coupled with the portable electronic device. The portable electronic device performs wireless charging or related functions in accordance with the coupled accessories.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 10, 2022
    Inventors: Parin Patel, Daniel P. Kumar, Andrew C. Chang
  • Publication number: 20220035435
    Abstract: Systems, methods, and computer-readable media for managing near field communications during a low power express mode of an electronic device are provided that may make credentials of a near field communication (“NFC”) component appropriately secure and appropriately accessible while also limiting the power consumption of the NFC component and of other components of the electronic device.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 3, 2022
    Inventors: Yong WANG, Gordon Y. SCOTT, Andrew C. CHANG, Scott A. WILLIAMS
  • Patent number: 11121590
    Abstract: A wireless power system may include an accessory configured to transfer or relay wireless power to a portable electronic device. The portable electronic device may include wireless charging circuitry and sensors configured to detect compatible accessories currently coupled with the portable electronic device. The portable electronic device performs wireless charging or related functions in accordance with the coupled accessories.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: September 14, 2021
    Assignee: Apple Inc.
    Inventors: Parin Patel, Daniel P. Kumar, Andrew C. Chang
  • Patent number: 11086387
    Abstract: Systems, methods, and computer-readable media for managing near field communications during a low power express mode of an electronic device are provided that may make credentials of a near field communication (“NFC”) component appropriately secure and appropriately accessible while also limiting the power consumption of the NFC component and of other components of the electronic device.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 10, 2021
    Assignee: Apple Inc.
    Inventors: Yong Wang, Gordon Y. Scott, Andrew C. Chang, Scott A. Williams
  • Publication number: 20200176408
    Abstract: The invention provides a semiconductor package and a method for fabricating a base for a semiconductor package. The semiconductor package includes a conductive trace embedded in a base. A semiconductor device is mounted on the conductive trace via a conductive structure.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 4, 2020
    Applicant: MediaTek Inc.
    Inventors: Tzu-Hung Lin, Wen-Sung Hsu, Ta-Jen Yu, Andrew C. Chang
  • Patent number: 10580747
    Abstract: In one configuration, a semiconductor package includes a conductive trace embedded in a base and a semiconductor device mounted on the conductive trace via a conductive structure, wherein the conductive structure is a bump structure and the width of the bump structure is bigger than the width of the conductive trace. In another configuration, a method for fabricating a semiconductor package includes providing a base, forming at least one conductive trace on the base, forming an additional insulation material on the base, and defining patterns upon the additional insulation material, wherein the pattern is formed on at least one conductive trace, wherein the conductive structure is a bump structure and the width of the bump structure is bigger than the width of the conductive trace.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 3, 2020
    Assignee: MediaTek Inc.
    Inventors: Tzu-Hung Lin, Wen-Sung Hsu, Ta-Jen Yu, Andrew C. Chang
  • Patent number: 10573615
    Abstract: The invention provides a semiconductor package and a method for fabricating a base for a semiconductor package. The semiconductor package includes a conductive trace embedded in a base. A semiconductor device is mounted on the conductive trace via a conductive structure.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 25, 2020
    Assignee: MediaTek Inc.
    Inventors: Tzu-Hung Lin, Wen-Sung Hsu, Ta-Jen Yu, Andrew C. Chang