Patents by Inventor Chang Yeob Kim

Chang Yeob Kim 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).

  • Sound inspection method and inspection apparatus for display device including sound generator
    Patent number: 11709094
    Abstract: A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: July 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kee Yong Kim, Chang Yeob Kim, Jung Hun Sin, Han Su Cho
  • Display apparatus and a method of compensating fingerprint sensing data using the same
    Patent number: 11244136
    Abstract: A display apparatus includes: a display panel configured to display an image; a fingerprint sensor disposed on the display panel and configured to capture a fingerprint image and to generate fingerprint sensing data; and a fingerprint sensor controller configured to generate a compensation characteristic function of each pixel of the fingerprint sensor using a plurality of test patterns, to extract a coefficient of the compensation characteristic function of each pixel and to compensate the fingerprint sensing data using the coefficient of the compensation characteristic function.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kee Yong Kim, Mun Su Kim, Chang Yeob Kim, Jae-Sung Cha
  • DISPLAY APPARATUS AND A METHOD OF COMPENSATING FINGERPRINT SENSING DATA USING THE SAME
    Publication number: 20210097255
    Abstract: A display apparatus includes: a display panel configured to display an image; a fingerprint sensor disposed on the display panel and configured to capture a fingerprint image and to generate fingerprint sensing data; and a fingerprint sensor controller configured to generate a compensation characteristic function of each pixel of the fingerprint sensor using a plurality of test patterns, to extract a coefficient of the compensation characteristic function of each pixel and to compensate the fingerprint sensing data using the coefficient of the compensation characteristic function.
    Type: Application
    Filed: July 15, 2020
    Publication date: April 1, 2021
    Inventors: Kee Yong KIM, Mun Su KIM, Chang Yeob KIM, Jae-Sung CHA
  • SOUND INSPECTION METHOD AND INSPECTION APPARATUS FOR DISPLAY DEVICE INCLUDING SOUND GENERATOR
    Publication number: 20210048339
    Abstract: A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 18, 2021
    Inventors: Kee Yong Kim, Chang Yeob Kim, Jung Hun Sin, Han Su Cho