Patents by Inventor Jihye Chang

Jihye Chang 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).

  • Flexible lighiing device and display panel using micro LED chips
    Patent number: 11482568
    Abstract: A flexible surface lighting device is disclosed. The flexible surface lighting device includes: a flexible substrate including an upper insulating film, a lower insulating film, and a thin metal layer interposed between the upper and lower insulating films; a plurality of micro-LED chips two-dimensionally arrayed on the top surface of the flexible substrate; and a flexible light-transmitting resin part disposed on the top surface of the flexible substrate to cover the top and side surfaces of the micro-LED chips. The flexible substrate includes a white reflective layer in contact with the light-transmitting resin part on the upper insulating film.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 25, 2022
    Assignee: LUMENS CO., LTD.
    Inventors: Jeongwoo Lee, Junhyung Lim, Hyunpyo Hong, Jihye Chang, Bogyun Kim, Youngkyo Ro, Gunha Kim, Jugyeong Mun
  • FLEXIBLE LIGHTING DEVICE AND DISPLAY PANEL USING MICRO LED CHIPS
    Publication number: 20210265328
    Abstract: A flexible surface lighting device is disclosed. The flexible surface lighting device includes: a flexible substrate including an upper insulating film, a lower insulating film, and a thin metal layer interposed between the upper and lower insulating films; a plurality of micro-LED chips two-dimensionally arrayed on the top surface of the flexible substrate; and a flexible light-transmitting resin part disposed on the top surface of the flexible substrate to cover the top and side surfaces of the micro-LED chips. The flexible substrate includes a white reflective layer in contact with the light-transmitting resin part on the upper insulating film.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 26, 2021
    Applicant: LUMENS CO., LTD.
    Inventors: Jeongwoo LEE, Junhyung LIM, Hyunpyo HONG, Jihye CHANG, Bogyun KIM, Youngkyo RO, Gunha KIM, Jugyeong MUN
  • Color temperature variable light emitting diode module, lighting device using the light emitting diode module and method for fabricating the light emitting diode module
    Patent number: 10874001
    Abstract: Disclosed is a color temperature variable light emitting diode module that is driven when alternating current power is applied thereto. The light emitting diode module includes: a substrate; and a plurality of light emitting diode groups arranged on a substrate and including a first light emitting diode group emitting light at an input voltage level equal to or above a first reference voltage and a second light emitting diode group emitting light at an input voltage level equal to or above a second reference voltage higher than the first reference voltage.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: December 22, 2020
    Assignee: LUMENS CO., LTD.
    Inventors: Jungwoo Lee, Junhyung Lim, Hyunpyo Hong, Jihye Chang
  • COLOR TEMPERATURE VARIABLE LIGHT EMITTING DIODE MODULE, LIGHTING DEVICE USING THE LIGHT EMITTING DIODE MODULE AND METHOD FOR FABRICATING THE LIGHT EMITTING DIODE MODULE
    Publication number: 20190239308
    Abstract: Disclosed is a color temperature variable light emitting diode module that is driven when alternating current power is applied thereto. The light emitting diode module includes: a substrate; and a plurality of light emitting diode groups arranged on a substrate and including a first light emitting diode group emitting light at an input voltage level equal to or above a first reference voltage and a second light emitting diode group emitting light at an input voltage level equal to or above a second reference voltage higher than the first reference voltage.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 1, 2019
    Applicant: LUMENS CO., LTD.
    Inventors: Jungwoo Lee, Junhyung Lim, Hyunpyo Hong, Jihye Chang