Patents by Inventor Cho-Hsuan Jhang

Cho-Hsuan Jhang 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: 10775926
    Abstract: An electronic device, capable of performing a touch sensing operation and a fingerprint sensing operation simultaneously, is provided. The electronic device comprises a touch sensing control circuit; and a fingerprint sensing control circuit; wherein the touch sensing control circuit senses a first touch on a sensing region of a panel, and the touch sensing control circuit provides a first location information corresponding to the first touch; wherein a fingerprint region is determined in the sensing region according to the first location information, and the fingerprint region encompasses a location of the first touch; wherein the fingerprint sensing control circuit performs the fingerprint sensing operation on the fingerprint region during a first sensing time, and the electronic device performs the touch sensing operation on the sensing region except the fingerprint region during the first sensing time.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: September 15, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Cho-Hsuan Jhang, Chih-Peng Hsia, He-Jen Chen
  • Publication number: 20200275001
    Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 27, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Cho-Hsuan Jhang, Chao-Yu Meng, Shih-Cheng Chen, Chih-Peng Hsia
  • Publication number: 20200241725
    Abstract: An electronic device, capable of performing a touch sensing operation and a fingerprint sensing operation simultaneously, is provided. The electronic device comprises a touch sensing control circuit; and a fingerprint sensing control circuit; wherein the touch sensing control circuit senses a first touch on a sensing region of a panel, and the touch sensing control circuit provides a first location information corresponding to the first touch; wherein a fingerprint region is determined in the sensing region according to the first location information, and the fingerprint region encompasses a location of the first touch; wherein the fingerprint sensing control circuit performs the fingerprint sensing operation on the fingerprint region during a first sensing time, and the electronic device performs the touch sensing operation on the sensing region except the fingerprint region during the first sensing time.
    Type: Application
    Filed: December 9, 2019
    Publication date: July 30, 2020
    Inventors: Cho-Hsuan Jhang, Chih-Peng Hsia, He-Jen Chen
  • Publication number: 20200218871
    Abstract: A fingerprint identification apparatus including a touch and display integration circuit and a fingerprint identification device is provided. The touch and display integration circuit is configured to perform a touch and display function in each of a plurality of touch and display periods during a total contact time. An object touches a predetermined area of the display panel during the total contact time. The fingerprint identification device is configured to obtain a plurality of sample images of the object in each of a plurality of sensing periods during the total contact time. Two adjacent sensing periods have at least one of the touch and display periods therebetween. A fingerprint identification method of the fingerprint identification apparatus is also provided.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 9, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Cho-Hsuan Jhang, Chih-Peng Hsia, Wen-Shen Wuen
  • Publication number: 20200210065
    Abstract: An electronic device and a fingerprint sensing control method thereof are provided. A sensing region of a display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touched area. The electronic device scans the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated reading operation. The accelerated reading operation includes: reading at least one sensing signal from the at least one target fingerprint zone; and skipping reading at least one of the fingerprint zones other than the at least one target fingerprint zone among the fingerprint zones.
    Type: Application
    Filed: December 24, 2019
    Publication date: July 2, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Shih-Cheng Chen, Cho-Hsuan Jhang, Chih-Peng Hsia, Shiang-Fei Wang, Su-Wei Lien
  • Publication number: 20200210668
    Abstract: An electronic device and a fingerprint sensing control method thereof are provided. The electronic device includes a touch control circuit and a fingerprint sensing control circuit. The touch control circuit is coupled to the display panel. The touch control circuit performs touch detection on the display panel to obtain a finger press area corresponding to the finger on the display panel. The fingerprint sensing control circuit is coupled to the touch control circuit to obtain a finger press area. The fingerprint sensing control circuit is coupled to the display panel to perform a fingerprint sensing control on a display panel. The fingerprint sensing control circuit scans the finger press area on the display panel in a first direction during a first period and scans the finger press area in a second direction different from the first direction during a second period after the first period.
    Type: Application
    Filed: December 25, 2019
    Publication date: July 2, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Cho-Hsuan Jhang, Shih-Cheng Chen, Su-Wei Lien, Chih-Peng Hsia, Shiang-Fei Wang