Patents by Inventor Ji Youn Oh

Ji Youn Oh 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).

  • Light emitting device
    Patent number: 11545599
    Abstract: A light emitting diode package includes: a housing; a light emitting diode chip arranged in the housing; a wavelength conversion unit arranged on the light emitting diode chip; a first fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the cyan wavelength band; and a second fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the red wavelength band, wherein the peak wavelength of light emitted from the light emitting diode chip is located within a range of 415 nm to 430 nm.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: January 3, 2023
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Myung Jin Kim, Kwang Yong Oh, Ki Bum Nam, Ji Youn Oh, Sang Shin Park, Michael Lim
  • LIGHT EMITTING DEVICE
    Publication number: 20210028334
    Abstract: A light emitting diode package includes: a housing; a light emitting diode chip arranged in the housing; a wavelength conversion unit arranged on the light emitting diode chip; a first fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the cyan wavelength band; and a second fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the red wavelength band, wherein the peak wavelength of light emitted from the light emitting diode chip is located within a range of 415 nm to 430 nm.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Inventors: Myung Jin Kim, Kwang Yong Oh, Ki Bum Nam, Ji Youn Oh, Sang Shin Park, Michael Lim
  • Light emitting device
    Patent number: 10811572
    Abstract: A light emitting diode package includes: a housing; a light emitting diode chip arranged in the housing; a wavelength conversion unit arranged on the light emitting diode chip; a first fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the cyan wavelength band; and a second fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the red wavelength band, wherein the peak wavelength of light emitted from the light emitting diode chip is located within a range of 415 nm to 430 nm.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 20, 2020
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Myung Jin Kim, Kwang Yong Oh, Ki Bum Nam, Ji Youn Oh, Sang Shin Park, Michael Lim
  • LIGHT EMITTING DEVICE
    Publication number: 20170309795
    Abstract: A light emitting diode package includes: a housing; a light emitting diode chip arranged in the housing; a wavelength conversion unit arranged on the light emitting diode chip; a first fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the cyan wavelength band; and a second fluorescent substance distributed inside the wavelength conversion unit and emitting light having a peak wavelength in the red wavelength band, wherein the peak wavelength of light emitted from the light emitting diode chip is located within a range of 415 nm to 430 nm.
    Type: Application
    Filed: October 7, 2015
    Publication date: October 26, 2017
    Inventors: Myung Jin KIM, Kwang Yong OH, Ki Bum NAM, Ji Youn OH, Sang Shin PARK, Michael LIM
  • Lighting emitting device
    Patent number: 9590149
    Abstract: A light emitting device is disclosed. The light emitting device includes: a light emitting diode emitting light having a peak wavelength in the range of 415 nm to 435 nm; and a wavelength conversion unit disposed on the light emitting diode, wherein the wavelength conversion unit includes cyan phosphors emitting light having a peak wavelength in a cyan light wavelength band and red phosphors emitting light having a peak wavelength in a red light wavelength band, and a ratio of an output of light having a wavelength in the range of 435 nm to 465 nm to a total output of light emitted from the light emitting device is approximately equal to or less than 3%.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: March 7, 2017
    Assignee: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Michael Lim, Hyuck Jung Choi, Kwang Yong Oh, Myung Jin Kim, Ki Bum Nam, Sang Shin Park, Ji Youn Oh
  • LIGHTING EMITTING DEVICE
    Publication number: 20160104820
    Abstract: A light emitting device is disclosed. The light emitting device includes: a light emitting diode emitting light having a peak wavelength in the range of 415 nm to 435 nm; and a wavelength conversion unit disposed on the light emitting diode, wherein the wavelength conversion unit includes cyan phosphors emitting light having a peak wavelength in a cyan light wavelength band and red phosphors emitting light having a peak wavelength in a red light wavelength band, and a ratio of an output of light having a wavelength in the range of 435 nm to 465 nm to a total output of light emitted from the light emitting device is approximately equal to or less than 3%.
    Type: Application
    Filed: February 17, 2015
    Publication date: April 14, 2016
    Inventors: Michael Lim, Hyuck Jung Choi, Kwang Yong Oh, Myung Jin Kim, Ki Bum Nam, Sang Shin Park, Ji Youn Oh