Patents by Inventor Bo Yong HAN

Bo Yong HAN 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: 10930824
    Abstract: A light emitting device including a blue light emitting portion configured to emit blue light, a green light emitting portion configured to emit green light, and a red light emitting portion configured to emit red light, in which the blue light emitting portion includes a near-UV light emitting diode chip and a first wavelength conversion portion for wavelength conversion of near-UV light emitted from the near-UV light emitting diode chip, the blue light emitted from the blue light emitting portion includes a first peak wavelength in a wavelength band corresponding to near-UV light and a second peak wavelength in a wavelength band corresponding to blue light, and an intensity of the first peak wavelength is in a range of 0% to 20% of an intensity of the second peak wavelength.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: February 23, 2021
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Bo Yong Han
  • Publication number: 20200411733
    Abstract: A light emitting element including a housing having a cavity and an inner wall, a light emitting part disposed in the cavity to emit light having a peak wavelength in a blue wavelength band and including first and second light emitting chips spaced apart from each other, and a wavelength converter including a first phosphor layer including a first phosphor to emit light having a peak wavelength in a green wavelength band, and a second phosphor layer including a second phosphor to emit light having a peak wavelength in a red wavelength band, in which the second phosphor includes at least one of a nitride-based red phosphor and a fluoride-based red phosphor represented by A2MF6:Mn4+, A is one of Li, Na, K, Ba, Rb, Cs, Mg, Ca, Se, and Zn, and M is one of Ti, Si, Zr, Sn, and Ge.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Inventors: Ho Jun BYUN, Bo Yong HAN
  • Publication number: 20200267814
    Abstract: A lighting apparatus including a controller including a real time clock, an LED driver, and an LED luminaire including a first light emitting unit including a first LED to emit light having a peak wavelength between 300 to 470 nm and a wavelength converter, and at least one of a second light emitting unit to emit light having a peak wavelength between 286 to 304 nm to cause production of vitamin D, a third light emitting unit to emit light having a peak wavelength between 605 to 935 nm to cause production of a cell activating substance, and a fourth light emitting unit to emit light having a peak wavelength between 400 to 430 nm to sterilize pathogenic microorganisms, in which the controller controls the LED driver to change an irradiance of light emitted from at least one of the light emitting units according to time.
    Type: Application
    Filed: February 18, 2020
    Publication date: August 20, 2020
    Inventors: Jun Ho SONG, Bo Yong HAN
  • Publication number: 20200083409
    Abstract: A light emitting device including at least one first light emitting unit including an ultraviolet or violet light emitting diode chip and a first wavelength converter, at least one second light emitting unit including an ultraviolet or violet light emitting diode chip and a second wavelength converter, and at least one third light emitting unit including an ultraviolet or violet light emitting diode chip and a third wavelength converter, in which color coordinates of the first light emitting unit, the second light emitting unit, and the third light emitting unit define a triangular region in a CIE-1931 coordinate system, the triangular region including at least a portion of the Plankian locus, and a maximum color temperature of the Plankian locus included in the triangular region is 5000K or higher, and a minimum color temperature of the Plankian locus included in the triangular region is 3000K or lower.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 12, 2020
    Inventor: Bo Yong Han
  • Publication number: 20190305192
    Abstract: A light emitting device including a blue light emitting portion configured to emit blue light, a green light emitting portion configured to emit green light, and a red light emitting portion configured to emit red light, in which the blue light emitting portion includes a near-UV light emitting diode chip and a first wavelength conversion portion for wavelength conversion of near-UV light emitted from the near-UV light emitting diode chip, the blue light emitted from the blue light emitting portion includes a first peak wavelength in a wavelength band corresponding to near-UV light and a second peak wavelength in a wavelength band corresponding to blue light, and an intensity of the first peak wavelength is in a range of 0% to 20% of an intensity of the second peak wavelength.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Inventor: Bo Yong HAN
  • Publication number: 20190013446
    Abstract: A light emitting element including a first light emitting diode chip to emit emitting light having a peak wavelength in the range of 350 nm to 420 nm, a second light emitting diode chip separated from the first light emitting diode chip and to emit emitting light having a peak wavelength in the range of 430 nm to 470 nm, a green phosphor formed on the first light emitting diode chip, and a red phosphor formed on the second light emitting diode chip, in which the green phosphor includes a BAM-based green phosphor.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 10, 2019
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventors: Ho Jun BYUN, Bo Yong HAN