Patents by Inventor Yaqian Ji

Yaqian Ji 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: 11178494
    Abstract: An embodiment of the present invention provides a sound generating device which comprises a housing, wherein a sound generating unit is mounted in the housing, a closed rear cavity is formed between the sound generating unit and the housing, and the sound generating unit is provided with a rear sound hole in communication with the rear cavity, wherein the sound generating unit comprises a magnetic circuit system, an expandable-capacity cavity being provided on the magnetic circuit system, and the expandable-capacity cavity acting as part of the rear cavity to increase a volume of the rear cavity.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: November 16, 2021
    Assignee: Goertek Inc.
    Inventors: Guodong Zhao, Zedong Zheng, Peijun Li, Yaqian Ji
  • Publication number: 20210260620
    Abstract: The present disclosure provides an ultrasonic sensor, a method for driving the same, and a method for manufacturing the same. The ultrasonic sensor includes a back plate, a sounding structure on the back plate and a backing layer on a side of the sounding structure distal to the back plate; the sounding structure includes a plurality of emitting electrodes, an opposite electrode, a piezoelectric layer and a plurality of signal leads, and the plurality of emitting electrodes and the opposite electrode are respectively arranged on two sides of the piezoelectric layer; and the plurality of emitting electrodes are arranged in an array, and each of the emitting electrodes is individually coupled to one of the signal leads. The ultrasonic sensor may achieve an independent control for each patterned electrode such that the ultrasonic sensor may be used as a point sound source.
    Type: Application
    Filed: February 25, 2021
    Publication date: August 26, 2021
    Inventors: Yuzhen GUO, Yingming LIU, Haisheng WANG, Xiufeng LI, Lijun ZHAO, Peixiao LI, Yaqian JI, Chenyang ZHANG
  • Publication number: 20210192167
    Abstract: An ultrasonic fingerprint recognition module is described that includes sensing units distributed in the form of array, where the sensing units include: a receiving electrode layer having a plurality of receiving electrodes distributed in the form of array; a piezoelectric material layer disposed on one side of the receiving electrode layer; an emission electrode layer disposed on a side of the piezoelectric material layer distal to the receiving electrode layer, and including a plurality of rows of emission electrodes; a selection circuit having an input terminal which is connected with an excitation signal and an output terminal which is connected with the emission electrode for selecting to transmit the excitation signal to the plurality of emission electrodes; and a pixel receiving circuit connected to the receiving electrode layer that receives a fingerprint signal.
    Type: Application
    Filed: June 29, 2020
    Publication date: June 24, 2021
    Inventors: Xiufeng LI, Haisheng WANG, Xiaoliang DING, Pengpeng WANG, Yuzhen GUO, Lijun ZHAO, Chenyang ZHANG, Yaqian JI, Yanling HAN, Peixiao LI
  • Publication number: 20210156977
    Abstract: An ultrasonic sensing module, an ultrasonic sensing device and a control method thereof, and a display device. The ultrasonic sensing module includes a first electrode layer, a piezoelectric layer, a receiving electrode layer and an emission electrode layer. The first electrode layer is on a first side of the piezoelectric layer; the receiving electrode layer and the emission electrode layer insulated from the receiving electrode layer are on a second side of the piezoelectric layer; and the second side is opposite to the first side.
    Type: Application
    Filed: March 27, 2020
    Publication date: May 27, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiufeng LI, Yingming LIU, Haisheng WANG, Xiaoliang DING, Pengpeng WANG, Yuzhen GUO, Lijun ZHAO, Chenyang ZHANG, Yaqian JI, Yanling HAN, Peixiao LI
  • Publication number: 20200413201
    Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system, wherein the shell sequentially accommodates and fixes the vibration system and the magnetic circuit system from top to bottom; the magnetic circuit system comprises a magnetic conductive yoke, and a central magnetic circuit portion and a side magnetic circuit portion that are mounted on an upper surface of the magnetic conductive yoke; a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion; and at least one of the central magnetic circuit portion and the side magnetic circuit portion is provided with a permanent magnet; the magnetic circuit system is provided with a rear sound hole; a rear cavity in communication with the rear sound hole is provided directly below the magnetic circuit system.
    Type: Application
    Filed: December 25, 2018
    Publication date: December 31, 2020
    Applicant: Goertek Inc.
    Inventors: Guodong Zhao, Peijun Li, Yaqian Ji, Zhilei Han
  • Publication number: 20200404425
    Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system sequentially accommodated and fixed at a first end of the shell from top to bottom; the magnetic circuit system is provided with a rear sound hole; the shell comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system. A second end portion of the shell is integrally provided with a shell bottom wall or separately mounted with a lower cover plate; and a rear cavity in communication with the rear sound hole is formed.
    Type: Application
    Filed: December 25, 2018
    Publication date: December 24, 2020
    Applicant: Goertek Inc.
    Inventors: Guodong Zhao, Peijun Li, Yaqian Ji, Zhilei Han
  • Publication number: 20200382875
    Abstract: A sound generator, which comprises: a housing, a vibration system and a magnetic circuit system. The vibration system and the magnetic circuit system are sequentially accommodated and fixed at a first end of the housing from top to bottom; the magnetic circuit system is provided with a rear sound hole; the housing comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system; a second end portion of the housing is integrally provided with a housing bottom wall or separately mounted with a lower cover plate; and a rear cavity which is in communication with the rear sound hole is formed between the second portion of the housing, the bottom surface of the magnetic circuit system, and the housing bottom wall or the lower cover plate.
    Type: Application
    Filed: December 24, 2018
    Publication date: December 3, 2020
    Applicant: Goertek Inc.
    Inventors: Guodong Zhao, Zedong Zheng, Peijun Li, Yaqian Ji
  • Publication number: 20200372231
    Abstract: A fingerprint identification module, a manufacturing method and driving method thereof, and a display device. The fingerprint identification module includes: a driving backplate, including a substrate, identification circuits on the substrate, the identification circuits having a first electrode pad, a second electrode pad; acoustic units including: a first electrode; a piezoelectric film layer positioned on the side, close to the driving backplate, of the first electrode; a second electrode positioned on the side, close to the driving backplate, of the piezoelectric film layer; a first lead-out terminal electrically connected with the first electrode; a second lead-out terminal electrically connected with the second electrode; cavities being in one-to-one correspondence to the acoustic units, the cavities positioned between the second electrodes and the substrate, and one side face, away from the substrate, of cavity being defined by at least one side face, close to the substrate, of the second electrode.
    Type: Application
    Filed: September 17, 2019
    Publication date: November 26, 2020
    Inventors: Yingming LIU, Haisheng WANG, Xiaoliang DING, Xiufeng LI, Pengpeng WANG, Chenyang ZHANG, Yaqian JI, Peixiao LI, Jing LIU, Ruituo WANG, Lei CHEN
  • Publication number: 20200351592
    Abstract: An embodiment of the present invention provides a sound generating device which comprises a housing, wherein a sound generating unit is mounted in the housing, a closed rear cavity is formed between the sound generating unit and the housing, and the sound generating unit is provided with a rear sound hole in communication with the rear cavity, wherein the sound generating unit comprises a magnetic circuit system, an expandable-capacity cavity being provided on the magnetic circuit system, and the expandable-capacity cavity acting as part of the rear cavity to increase a volume of the rear cavity.
    Type: Application
    Filed: December 24, 2018
    Publication date: November 5, 2020
    Applicant: Goertek Inc.
    Inventors: Guodong Zhao, Zedong Zheng, Peijun Li, Yaqian Ji