Patents by Inventor Mengping Li

Mengping Li 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: 20240055282
    Abstract: Methods provided herein may include illuminating a region on a wafer within a semiconductor processing tool, the wafer having a layer of a material that is at least semi-transparent to light and has a measurable extinction coefficient, and the region being a first fraction of the wafer's surface, detecting light reflected off the material and off a surface underneath the material using one or more detectors and generating optical data corresponding to the detected light, generating a metric associated with a property of the material on the wafer by applying the optical data to a transfer function that relates the optical data to the metric associated with the property of the material on the wafer, determining an adjustment to one or more processing parameters for a processing module, and performing or modifying a processing operation in the processing module according to the adjusted one or more processing parameters.
    Type: Application
    Filed: January 4, 2022
    Publication date: February 15, 2024
    Inventors: Liu Yang, Mengping LI, Shantinath Ghongadi, Andrew James Pfau
  • Patent number: 11361583
    Abstract: A fingerprint identification apparatus and an electronic device. The fingerprint identification apparatus includes: a fingerprint sensor; and the fingerprint sensor including an optical sensing array, wherein a spatial period N of the optical sensing array satisfies N<M/2K; wherein M is a spatial period of a light-emitting pixel array, and K is a zoom ratio between an image displayed in a sensing area of the fingerprint sensor and an image captured in the sensing area by the fingerprint sensor. By clarifying the relationship between the spatial period of the light-emitting pixel array in the display screen and the spatial period of the optical sensing array in the fingerprint sensor, it can avoid the sensor from generating moiré fringes when imaging based on light received by transmitting through the display screen, thereby improving fingerprint identification performance.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: June 14, 2022
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Mengping Li, Canhong Du
  • Patent number: 11200400
    Abstract: A fingerprint identification apparatus and an electronic device applicable to an electronic device having a display screen, including: an optical function layer, disposed between the display screen and a middle frame of the electronic device, wherein the optical function layer includes a quarter-wave plate and a polarizer, and the polarizer is disposed under the quarter-wave plate; and an optical fingerprint module, disposed under the optical function layer, and configured to receive a fingerprint optical signal transmitted through the quarter-wave plate and the polarizer, wherein the fingerprint detecting signal is used for detecting fingerprint information of a finger.
    Type: Grant
    Filed: December 14, 2019
    Date of Patent: December 14, 2021
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Mengping Li, Canhong Du, Songjin Zhong
  • Patent number: 11069487
    Abstract: Energy storage devices comprising carbon-based electrodes and/or redox electrolytes are disclosed herein. In some embodiments, the carbon-based electrodes comprise laser-scribed activated carbon comprising one or more micro-channels. In some embodiments, the redox electrolytes comprise a ferricyanide/ferrocyanide redox couple. Also described are processes, methods, protocols and the like for manufacturing carbon-based electrodes comprising micro-channels for use in high energy storage devices such as supercapacitors, and for manufacturing high energy storage devices comprising redox electrolytes.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: July 20, 2021
    Assignee: The Regents of the University of California
    Inventors: Richard B. Kaner, Jee Youn Hwang, Mengping Li, Maher F. El-Kady
  • Publication number: 20210103714
    Abstract: A fingerprint identification apparatus and an electronic device. The fingerprint identification apparatus includes: a fingerprint sensor; and the fingerprint sensor including an optical sensing array, wherein a spatial period N of the optical sensing array satisfies N<M/2K; wherein M is a spatial period of a light-emitting pixel array, and K is a zoom ratio between an image displayed in a sensing area of the fingerprint sensor and an image captured in the sensing area by the fingerprint sensor. By clarifying the relationship between the spatial period of the light-emitting pixel array in the display screen and the spatial period of the optical sensing array in the fingerprint sensor, it can avoid the sensor from generating moiré fringes when imaging based on light received by transmitting through the display screen, thereby improving fingerprint identification performance.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 8, 2021
    Inventors: Mengping LI, Canhong DU
  • Publication number: 20200117878
    Abstract: A fingerprint identification apparatus and an electronic device applicable to an electronic device having a display screen, including: an optical function layer, disposed between the display screen and a middle frame of the electronic device, wherein the optical function layer includes a quarter-wave plate and a polarizer, and the polarizer is disposed under the quarter-wave plate; and an optical fingerprint module, disposed under the optical function layer, and configured to receive a fingerprint optical signal transmitted through the quarter-wave plate and the polarizer, wherein the fingerprint detecting signal is used for detecting fingerprint information of a finger.
    Type: Application
    Filed: December 14, 2019
    Publication date: April 16, 2020
    Inventors: Mengping LI, Canhong DU, Songjin ZHONG
  • Publication number: 20190333712
    Abstract: Energy storage devices comprising carbon-based electrodes and/or redox electrolytes are disclosed herein. In some embodiments, the carbon-based electrodes comprise laser-scribed activated carbon comprising one or more micro-channels. In some embodiments, the redox electrolytes comprise a ferricyanide/ferrocyanide redox couple. Also described are processes, methods, protocols and the like for manufacturing carbon-based electrodes comprising micro-channels for use in high energy storage devices such as supercapacitors, and for manufacturing high energy storage devices comprising redox electrolytes.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 31, 2019
    Inventors: Richard B. Kaner, Jee Youn Hwang, Mengping Li, Maher F. El-Kady
  • Patent number: 10388466
    Abstract: Energy storage devices comprising carbon-based electrodes and/or redox electrolytes are disclosed herein. In some embodiments, the carbon-based electrodes comprise laser-scribed activated carbon comprising one or more micro-channels. In some embodiments, the redox electrolytes comprise a ferricyanide/ferrocyanide redox couple. Also described are processes, methods, protocols and the like for manufacturing carbon-based electrodes comprising micro-channels for use in high energy storage devices such as supercapacitors, and for manufacturing high energy storage devices comprising redox electrolytes.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: August 20, 2019
    Assignee: The Regents of the University of California
    Inventors: Richard B. Kaner, Jee Youn Hwang, Mengping Li, Maher F. El-Kady
  • Patent number: 10261609
    Abstract: A boost circuit includes: an inductor, a switch module, a capacitor and a control module. The switch module includes at least a first switch and a second switch. The capacitor and the second switch are connected in parallel. A first terminal of the first switch is connected to one terminal of the inductor. A second terminal of the first switch is connected to a first terminal of the second switch. A second terminal of the second switch is grounded. The other terminal of the inductor is configured to connect a power supply. The control module is connected to a control terminal of the switch module. The control module is configured to control states of the switches in the switch module, to enable the first terminal of the second switch to output a voltage signal with a preset frequency and amplitude.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: April 16, 2019
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Mengping Li, Canhong Du
  • Publication number: 20180292920
    Abstract: A boost circuit includes: an inductor, a switch module, a capacitor and a control module. The switch module includes at least a first switch and a second switch. The capacitor and the second switch are connected in parallel. A first terminal of the first switch is connected to one terminal of the inductor. A second terminal of the first switch is connected to a first terminal of the second switch. A second terminal of the second switch is grounded. The other terminal of the inductor is configured to connect a power supply. The control module is connected to a control terminal of the switch module. The control module is configured to control states of the switches in the switch module, to enable the first terminal of the second switch to output a voltage signal with a preset frequency and amplitude.
    Type: Application
    Filed: November 20, 2017
    Publication date: October 11, 2018
    Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Mengping LI, Canhong DU
  • Publication number: 20180182565
    Abstract: Energy storage devices comprising carbon-based electrodes and/or redox electrolytes are disclosed herein. In some embodiments, the carbon-based electrodes comprise laser-scribed activated carbon comprising one or more micro-channels. In some embodiments, the redox electrolytes comprise a ferricyanide/ferrocyanide redox couple. Also described are processes, methods, protocols and the like for manufacturing carbon-based electrodes comprising micro-channels for use in high energy storage devices such as supercapacitors, and for manufacturing high energy storage devices comprising redox electrolytes.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 28, 2018
    Inventors: Richard B. Kaner, Jee Youn Hwang, Mengping Li, Maher F. El-Kady