Patents Assigned to Seoul Semiconductor Co., Ltd.
  • Patent number: 10497845
    Abstract: A display apparatus and a method of manufacturing the same are disclosed. The display apparatus includes: a light emitting diode chip; and a first substrate electrode and a second substrate electrode disposed under the light emitting diode chip and electrically connected to the light emitting diode chip, the first substrate electrode and the second substrate electrode being electrically insulated from each other, wherein at least a portion of at least one of the first substrate electrode and the second substrate electrode protrudes above its surroundings. The light emitting diode chip can have a high current density, despite a small amount of current being supplied to the light emitting diode chip through reduction in luminous area.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: December 3, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Motonobu Takeya, Jong Ik Lee
  • Patent number: 10424697
    Abstract: A light-emitting diode package includes a light-emitting diode chip disposed in a housing, a first phosphor configured to emit green light, and a second phosphor configured to emit red light. White light is configured to be formed by a synthesis of light emitted from the light-emitting diode chip, the first phosphor, and the second phosphor. The second phosphor has a chemical formula of A2MF6:Mn4+, A is one of Li, Na, K, Rb, Ce, and NH4, and M is one of Si, Ti, Nb, and Ta, and the Mn4+ of the second phosphor has a mole range of about 0.02 to about 0.035 times the M.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: September 24, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Yong Oh, Ho Jun Byun, Hyuck Jun Kim, Ki Bum Nam, Su Yeon Kim
  • Patent number: 10418348
    Abstract: A light emitting diode package including a housing, a first light emitting diode chip and a second light emitting diode chip disposed in the housing, and a wavelength conversion part including a phosphor configured to absorb light emitted from the first light emitting diode chip and emit light having a different wavelength than the light emitted from the first light emitting diode chip, in which the light emitted from the first light emitting diode chip has a shorter wavelength than light emitted from the second light emitting diode chip, and the phosphor has a fluorescence intensity of 10 or less at a peak wavelength of light emitted from the second light emitting diode chip, with reference to a maximum fluorescence intensity of 100 at a wavelength of 425 nm to 475 nm on an excitation spectrum of the second light emitting diode chip.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: September 17, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Myung Jin Kim, Kwang Yong Oh, Seung Ryeol Ryu
  • Patent number: 10407315
    Abstract: Briefly, embodiments of systems and/or methods for synthesis of zinc oxide are described, including a chamber enclosure, a wafer substrate holder, a fluid handling system, and sequences for implementation.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 10, 2019
    Assignee: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Jacob J. Richardson, Evan C. O'Hara
  • Patent number: 10401556
    Abstract: The present invention relates to a light source module, which has excellent lighting efficiency and is slim, and a backlight unit having the same. The present invention comprises a light emitting unit electronically connected to a substrate through a bottom surface; a wavelength conversion unit formed on the light emitting unit; and a reflection unit formed on the light emitting unit, wherein the reflection unit has a light emitting surface through which light from the light emitting unit is emitted, the light emitting surface being formed by exposing at least one surface of the wavelength conversion unit.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 3, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Yoon Seop Lee
  • Patent number: 10393347
    Abstract: A luminaire includes a mixing chamber having an array of apertures in one wall, a light source to supply light into the mixing chamber, and an array of optics outside the mixing chamber, each positioned to cooperate with a respective one of the apertures to emit light from the mixing chamber as a beam. The shape, size, and/or direction of the output light beam are controllably varied by controlling the shape, size, and/or position of each aperture relative to its associated optic.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 27, 2019
    Assignee: SEOUL SEMICONDUCTORS CO., LTD.
    Inventors: Pablo Benitez, Juan Carlos Minano, Ruben Mohedano, Julio C. Chaves, Waqidi Falicoff
  • Patent number: 10378725
    Abstract: A light emitting module includes a substrate, a light emitting diode chip, and a lens. The light emitting diode chip is disposed on the substrate. The lens is coupled to the substrate and covers the light emitting diode chip. The lens includes a light incident surface and a light exit surface. The light incident surface receives light from the light emitting diode chip. The light exit surface outputs the light from the lens. The light incident surface includes a concave light incident surface and a convex light incident surface. The concave light incident surface overlaps the light emitting diode. The convex light incident surface extends from the concave light incident surface.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: August 13, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jang Weon Lee, Sung Ki Hwang
  • Patent number: 10383184
    Abstract: A light-emitting diode driving module includes an LED driving circuit to activate light-emitting diodes driven by a modified rectified voltage, and to adjust driving currents conducted to driving nodes to the light emitting diodes; a driving current controller to receive a dimming signal indicative of a degree of modulation of the rectified voltage, and to control currents conducted to the driving nodes depending on the dimming signal; and a current blocking circuit to block the currents of the driving nodes when a dimming level of the dimming signal decreases lower than a first threshold value, and unblock the currents of the driving nodes when the dimming level increases above a second threshold value higher than the first threshold value.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 13, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: SungHo Jin, HyungJin Lee, SangWook Han
  • Patent number: 10362650
    Abstract: A driving circuit for a light emitting diode connected to a TRIAC dimmer configured to modulate an input AC voltage depending on a selected dimming level including a rectifier configured to full-wave rectify the modulated AC voltage output from the TRIAC dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level and drive a plurality of light emitting diode groups depending on the detected dimming level, and a bleeder circuit configured to provide a bleeder current to the TRIAC dimmer, in which the bleeder circuit is configured to provide the bleeder current only for a preset on-duty time.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: July 23, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Bea Lim, Sung Ho Jin, Sang Wook Han, Young Do Jong
  • Patent number: 10356865
    Abstract: A lighting apparatus including a light emitting diode connected to a dimmer configured to modulate an input AC voltage depending on a selected dimming level, a rectifier configured to full-wave rectify the modulated AC voltage output from the dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level, and select one of three driving modes of a stop mode, a resistance driving mode, and a sequential driving mode depending on the detected dimming level, and a plurality of light emitting diode groups configured to emit light depending on a control of the driving module.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: July 16, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Bea Lim, Sung Ho Jin, Sang Wook Han, Young Do Jong
  • Patent number: 10342080
    Abstract: A light-emitting diode (LED) lighting apparatus including at least one LED group including a plurality of LEDs, a rectifier configured to rectify an alternating current (AC) voltage and generate a driving voltage for the at least one LED group, and a system-in-package (SIP) configured to drive and control the at least one LED group, in which the SIP is connected to the at least one LED group and the rectifier, and includes a driving module, a functional module, and a first resistor disposed on a single substrate.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 2, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Sung Ho Jin, Sang Wook Han, Hyung Jin Lee
  • Patent number: 10332949
    Abstract: Disclosed are a display apparatus and a method of manufacturing the same. The display apparatus includes a light emitting part including a plurality of light emitting diodes; and a thin film transistor (TFT) panel part configured to drive the plurality of light emitting diodes. A first side of the light emitting part and a first side of the TFT panel part are coupled to each other so as to face each other. The plurality of light emitting diodes are electrically connected to the plurality of TFTs, respectively.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 25, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Motonobu Takeya, Jong Ik Lee, Young Hyun Kim
  • Patent number: 10323803
    Abstract: A light emitting device and a vehicular lamp are provided. The light emitting device comprises: a first light emitting unit; a second light emitting unit separated from the first light emitting unit; and a sidewall surrounding side surfaces of the first and second light emitting units while adjoining the side surfaces of the first and second light emitting units, wherein the first light emitting unit and the second light emitting unit emit light have different peak wavelengths.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: June 18, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Yoon Seop Lee, Da Hye Kim, Sang Hong Lee, Byoung Kyu Park, Dae Wook Kim, Jae Hyun Park
  • Patent number: 10321529
    Abstract: An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: June 11, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Young Do Jung, Sung Ho Jin, Sang Wook Han, Hye Man Jung
  • Patent number: 10316431
    Abstract: The present invention provides a method of growing an ingot of group III nitride. Group III nitride crystals such as GaN are grown by the ammonothermal method on both sides of a seed to form an ingot and the ingot is sliced into wafers. The wafer including the first-generation seed is sliced thicker than the other wafers so that the wafer including the first-generation seed does not break. The wafer including the first-generation seed crystal can be used as a seed for the next ammonothermal growth.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 11, 2019
    Assignees: SixPoint Materials, Inc., Seoul Semiconductor Co., Ltd.
    Inventors: Tadao Hashimoto, Edward Letts, Sierra Hoff
  • Patent number: 10312225
    Abstract: A display apparatus and a micro-light emitting diode are disclosed. The display apparatus includes: a first substrate including a light emitting diode part including a plurality of light emitting diodes regularly arranged on the first substrate. The display apparatus is implemented using micro-light emitting diodes formed of nitride semiconductors and thus can provide high efficiency and high resolution to be applicable to a wearable apparatus while reducing power consumption. The micro-light emitting diodes may include a wall element so as to be applied to a display substrate by force.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 4, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Motonobu Takeya, Young Hyun Kim
  • Patent number: 10281111
    Abstract: A light emitting module includes a circuit board, light emitting elements disposed on the circuit board, each light emitting element including light emitting diode chips and a wavelength conversion layer coated on the light emitting diode chips, and a lens disposed on the light emitting elements and configured to diffuse light emitted form the light emitting elements. The lens includes a concave part having a light incident surface and an upper surface through which the light incident on the lens is emitted, and at least one of the light incident surface and the upper surface includes sections disposed at least 15° from a central axis and sequentially connected in a first direction.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: May 7, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Eun Ju Kim, Ki Bum Nam
  • Patent number: 10276760
    Abstract: Disclosed herein is a light emitting diode. The light emitting diode includes: a light emitting diode chip; a first molding portion covering the light emitting diode chip and having a first index of refraction; a second molding portion covering the first molding portion and having a second index of refraction, wherein the second index of refraction is not higher than the first index of refraction. The light emitting diode chip is covered by a molding portion having a high index of refraction and a molding portion having a low index of refraction and covering the molding portion having a high index of refraction in order to reduce total reflection in the molding portions through reduction in difference in index of refraction between external air and the molding portion having a high index of refraction, thereby improving quantity of light.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: April 30, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jae Wan Song, Jae Hyun Park, So Mi Park, Ki Bum Nam
  • Patent number: 10274143
    Abstract: A light emitting device including: a substrate; first and second light emitting units disposed on the substrate separate from each other and respectively including first and second light emitting diodes, on which first and second wavelength converters are respectively disposed; first and second bonding layers interposed between the substrate and the first and second light emitting units, respectively; a sidewall disposed surrounding and adjoining side surfaces of the first and second light emitting units; and a filler evenly disposed in the sidewall and capable of reflecting light from the first and second light emitting units, wherein the substrate includes plurality electrodes, wherein a first portion of the sidewall directly contacts both of the first light emitting diode and the second light emitting diode, and wherein a second portion of the sidewall separates and directly contacts the first wavelength converter and the second wavelength converter.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: April 30, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Yoon Seop Lee, Da Hye Kim, Sang Hong Lee, Byoung Kyu Park, Dae Wook Kim, Jae Hyun Park
  • Patent number: 10278243
    Abstract: Embodiments of the disclosure provide a backlight module using MJT LEDs and a backlight unit including the same. More specifically, embodiments of the disclosure provide a backlight module, which includes MJT LEDs configured to increase an effective light emitting area of each of light emitting cells and optical members capable of uniformly dispersing light emitted from the MJT LEDs. In addition, embodiments of the disclosure provide a backlight unit using the backlight module, thereby reducing the number of LEDs constituting the backlight unit while allowing operation at low current.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: April 30, 2019
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Young Jun Song, Hyuck Jung Choi, Il Kyung Suh