Patents Assigned to Creesense Microsystems Inc.
  • Patent number: 11929274
    Abstract: A poling apparatus for poling a polymer thin film formed on a workpiece carried by a workpiece carrier. The workpiece has grounding electrodes and grounding pads located at edges, and a thin film covering the grounding electrodes but exposing the grounding pads. The workpiece carrier has carrier electrodes located around the workpiece and inside grounding ports at the bottom. The poling apparatus includes, in a poling chamber, a poling source generating a plasma, a Z-elevator to raise the workpiece carrier toward the poling source using the grounding ports, and grounding mechanisms including downwardly biased electrical contacts which, when the workpiece carrier is raised by the Z-elevator, connect the grounding pads of the workpiece with the carrier electrodes, to ground the workpiece. The poling apparatus additionally includes preparation platform and transfer platform with conveyer systems with rollers and Z-elevators to move the workpiece carrier in and out of the poling chamber.
    Type: Grant
    Filed: July 9, 2023
    Date of Patent: March 12, 2024
    Assignee: Creesense Microsystems Inc.
    Inventors: Hongwei Lu, Daliang Wang, Albert Ting, Efrain Velazquez, Xiaoyan Zhang, Kai-An Wang
  • Patent number: 11910715
    Abstract: A poling apparatus for poling a polymer thin film formed on a workpiece carried by a workpiece carrier. The workpiece has multiple grounding electrodes, grounding pads located at its edges, and a polymer thin film including multiple areas each covering only one grounding electrode. The poling apparatus includes, in a poling chamber, a poling source generating a plasma, a shadow mask below the poling source, and a Z-elevator to raise the workpiece carrier toward the shadow mask and poling source. When the workpiece in the workpiece carrier is raised to contact the underside of the shadow mask, multiple openings of the shadow mask expose only the corresponding multiple thin film areas of the workpiece to the plasma; meanwhile, conductive grounding terminals on the underside of the shadow mask electrically connect the grounding pads of the workpiece with carrier electrodes on the workpiece carrier, to ground the workpiece.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 20, 2024
    Assignee: CREESENSE MICROSYSTEMS INC.
    Inventors: Albert Ting, Hongwei Lu, Kai-An Wang
  • Patent number: 11830748
    Abstract: A poling apparatus for poling a polymer thin film formed on a workpiece carried by a workpiece carrier. The workpiece has grounding electrodes and grounding pads located at edges, and a thin film covering the grounding electrodes but exposing the grounding pads. The workpiece carrier has carrier electrodes located around the workpiece and inside grounding ports at the bottom. The poling apparatus includes, in a poling chamber, a poling source generating a plasma, a Z-elevator to raise the workpiece carrier toward the poling source using the grounding ports, and grounding mechanisms including downwardly biased electrical contacts which, when the workpiece carrier is raised by the Z-elevator, connect the grounding pads of the workpiece with the carrier electrodes, to ground the workpiece. The poling apparatus additionally includes preparation platform and transfer platform with conveyer systems with rollers and Z-elevators to move the workpiece carrier in and out of the poling chamber.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: November 28, 2023
    Assignee: CREESENSE MICROSYSTEMS INC.
    Inventors: Hongwei Lu, Daliang Wang, Albert Ting, Efrain Velazquez, Xiaoyan Zhang, Kai-An Wang
  • Publication number: 20230352329
    Abstract: A poling apparatus for poling a polymer thin film formed on a workpiece carried by a workpiece carrier. The workpiece has grounding electrodes and grounding pads located at edges, and a thin film covering the grounding electrodes but exposing the grounding pads. The workpiece carrier has carrier electrodes located around the workpiece and inside grounding ports at the bottom. The poling apparatus includes, in a poling chamber, a poling source generating a plasma, a Z-elevator to raise the workpiece carrier toward the poling source using the grounding ports, and grounding mechanisms including downwardly biased electrical contacts which, when the workpiece carrier is raised by the Z-elevator, connect the grounding pads of the workpiece with the carrier electrodes, to ground the workpiece. The poling apparatus additionally includes preparation platform and transfer platform with conveyer systems with rollers and Z-elevators to move the workpiece carrier in and out of the poling chamber.
    Type: Application
    Filed: July 9, 2023
    Publication date: November 2, 2023
    Applicant: Creesense Microsystems Inc.
    Inventors: Hongwei Lu, Daliang Wang, Albert Ting, Efrain Velazquez, Xiaoyan Zhang, Kai-An Wang