Patents by Inventor Ji-hwan Kim

Ji-hwan 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).

  • Publication number: 20230284515
    Abstract: The present invention relates to a polycyclic aromatic derivative compound that can be used in a variety of organic material layers in an organic light-emitting element, and an organic light-emitting element comprising the polycyclic aromatic derivative compound, the highly efficient and long-life organic light-emitting element having significantly improved light-emitting efficiency by employing the polycyclic aromatic compound as a dopant compound in a light-emitting layer, and an anthracene derivative having a particular structure as a host compound.
    Type: Application
    Filed: July 27, 2020
    Publication date: September 7, 2023
    Inventors: Sung-hoon JOO, Ji-hwan KIM, Byung-sun YANG, Hyeon-jun JO, Sung-eun CHOI, Bong-ki SHIN
  • Patent number: 11749319
    Abstract: An integrated circuit (IC) chip includes a plurality of interlayer channels; at least one data pad; an identification (ID) generation circuit suitable for generating a chip ID signal by decoding a command/address signal; a first transmission circuit suitable for transferring a plurality of internal data pieces to a transmission path by aligning a plurality of interlayer data pieces respectively transferred from the plurality of interlayer channels according to a plurality of strobe signals while selectively inverting the plurality of interlayer data pieces according to the chip ID signal; and a second transmission circuit suitable for transferring the plurality of internal data pieces from the transmission path to the at least one data pad.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: September 5, 2023
    Assignee: SK hynix Inc.
    Inventors: Chang Kwon Lee, Ji Hwan Kim
  • Publication number: 20230247850
    Abstract: An objective of the present invention is to provide an organic EL device having high efficiency, low driving voltage and long lifetime by using a material for organic EL devices offering excellent hole injectability and transportability, electron blockability, stability in a thin-film state, and durability, and also by employing, in combination, the aforementioned material and various other materials for organic EL devices offering excellent hole/electron injectability and transportability, electron blockability, stability in a thin-film state, and durability, in a manner that the properties of each material can be brought out effectively. The present invention relates to an organic electroluminescence device having, between an anode and a cathode, at least a hole transport layer, a light-emitting layer, and an electron transport layer in this order from the anode side, wherein the hole transport layer contains a triarylamine compound having a specific structure.
    Type: Application
    Filed: August 2, 2021
    Publication date: August 3, 2023
    Applicants: HODOGAYA CHEMICAL CO., LTD., SFC CO., LTD.
    Inventors: Yuta HIRAYAMA, Takeshi YAMAMOTO, Kouki KASE, Shuichi HAYASHI, Soon-Wook CHA, Sung-Hoon JOO, Byung-Sun YANG, Ji-Hwan KIM
  • Publication number: 20230242556
    Abstract: The present disclosure relates to a novel method for manufacturing a deuterated boron compound and, more specifically, to a novel method for manufacturing a boron compound including a heteroaromatic ring, whereby the deuterated polycyclic ring compound guarantees excellent longevity as a dopant material in a light-emitting layer for the organic light-emitting diode and can be produced at high yield, with the improvement of facilitation and economy in the process due to the single deuteration step for the specific intermediate.
    Type: Application
    Filed: January 17, 2023
    Publication date: August 3, 2023
    Inventors: Bong-Ki SHIN, Sung-Hoon JOO, Ji-Hwan KIM, Jun-Young MOON
  • Patent number: 11710446
    Abstract: The present disclosure relates to an LED driving technology. According to the present disclosure, it is possible to increase the fineness of the gray scale without increasing a frequency of a clock by combining a plurality of driving current sources to generate a driving current supplied to one driving line.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: July 25, 2023
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Ji Hwan Kim, Jin Ho Choi, Jang Su Kim
  • Publication number: 20230217564
    Abstract: The present embodiment relates to a technology for facilitating an increase of the number of LEDs to be driven by communication of a clock signal between chips forming a daisy chain when driving LEDs. The communication of a clock signal as well as data between chips allows improve the synchronization between the clock signal and data.
    Type: Application
    Filed: October 26, 2022
    Publication date: July 6, 2023
    Inventors: Sang Suk KIM, Jang Su KIM, Ji Hwan KIM, Kyeong Rok LEE, Jong Min LEE
  • Publication number: 20230215871
    Abstract: A display device may include a substrate, a buffer layer on the substrate, a first active pattern on the buffer layer, the first active pattern having a first thickness, a second active pattern on the buffer layer spaced from the first active pattern and having a second thickness smaller than the first thickness, a first gate insulating layer on the first active pattern and the second active pattern, a first gate electrode on the first gate insulating layer, the first gate electrode overlapping the first active pattern, and a second gate electrode on the first gate insulating layer, the second gate electrode overlapping the second active pattern.
    Type: Application
    Filed: March 15, 2023
    Publication date: July 6, 2023
    Inventors: JONGHOON CHOI, JONGOH SEO, JI-HWAN KIM, JONGJUN BAEK, BYUNG SOO SO
  • Publication number: 20230208083
    Abstract: A connector device electrically connected to a circuit board includes: a body portion connected externally; a housing surrounding at least a portion of the body portion; a first terminal extending downward from the body portion and connected to a first capacitor of the circuit board; a second terminal extending downward from the body portion to be spaced apart from the first terminal and connected to a second capacitor of the circuit board; and a ferrite core through which the second terminal passes.
    Type: Application
    Filed: November 28, 2022
    Publication date: June 29, 2023
    Inventors: Su-Min LEE, Ji Hwan Kim
  • Patent number: 11685319
    Abstract: A device for automatically adjusting an angle of a monitor on a vehicle seat back includes: a fixation bracket on a front seat back upper-frame; a first rotation bracket on an upper portion of the fixation bracket; a second rotation bracket on a lower portion of the fixation bracket; a monitor on a front surface of the first rotation bracket; a motor on a bottom surface of the second rotation bracket; an angle adjustment bar integrally combined with a rear surface of the first rotation bracket; a lead screw, whose lower portion is connected to an output shaft of the motor, and whose upper portion passes through the second rotation bracket; and an ascending and descending member having a threaded hole such that the ascending and descending member fastened to the lead screw while being fastened to an end portion of the angle adjustment bar.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: June 27, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI TRANSYS INC.
    Inventors: Sang Ho Kim, Byeong Seon Son, Tae Hoon Lee, Ji Hwan Kim, Seon Chae Na, Sang Hoon Park, Yun Ho Kim, Won Kee Kim
  • Publication number: 20230191969
    Abstract: Disclosed is a headrest having a speaker, the headrest including: a headrest frame having a rear surface to which a driving module is coupled so that the headrest frame is movable forwards, rearwards, or vertically in response to operation of the driving module, the headrest frame having a front surface formed with a mounting space recessed rearwards; a speaker, inserted into the mounting space in the headrest frame, provided with an output portion facing forwards and outputting sound, the speaker having a rear side closed by the headrest frame; a foam pad, mounted on the front surface of the headrest frame so as to cover the headrest frame and the speaker, having formed therein a first through hole outputting sound forwards at a position corresponding to the output portion; and a covering configured to cover the front surface of the foam pad and forming the front exterior of the headrest.
    Type: Application
    Filed: September 22, 2022
    Publication date: June 22, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI TRANSYS INC.
    Inventors: Byeong Seon Son, Tae Hoon Lee, Young Sun Choi, Ji Hwan Kim, Seon Chae Na, Sang Ho Kim, Sang Hoon Park, Jae Ho Song, Won Kee Kim
  • Publication number: 20230189646
    Abstract: A polycyclic aromatic compound or a condensed multimer thereof, according to the present invention, is employed in an organic layer in an organoelectroluminescent device, thereby enabling the implementation of an organoelectroluminescent device having high efficiency and a long lifespan, and thus the present invention may be industrially useful in various display devices such as a flat panel display device, a flexible display device, a monochromatic or white flat panel lighting device, and a monochromatic or white flexible lighting device.
    Type: Application
    Filed: March 23, 2021
    Publication date: June 15, 2023
    Applicant: SFC CO., LTD
    Inventors: Bong-ki SHIN, Sung-hoon JOO, Byung-sun YANG, Ji-hwan KIM, Hyeon-jun JO, Sung-eun CHOI
  • Publication number: 20230180363
    Abstract: The present disclosure provides a technology for precisely controlling an LED driving current using fine current trimming data stored in a memory when driving an LED.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 8, 2023
    Applicant: LX Semicon Co., Ltd.
    Inventors: Ji Hwan KIM, Jang Su KIM
  • Publication number: 20230180598
    Abstract: An objective of the present invention is to provide a material for organic EL devices offering excellent hole injectability and transportability, electron blockability, stability in a thin-film state, and durability, and also to provide an organic EL device having high efficiency, low driving voltage and long lifetime by employing, in combination, the aforementioned material and various materials for organic EL devices offering excellent hole/electron injectability and transportability, electron blockability, stability in a thin-film state, and durability, in a manner that the properties of each of the materials can be brought out effectively. The present invention relates to an organic EL device containing a specific arylamine compound as a material constituting a second hole transport layer, wherein the difference between the HOMO level of the second hole transport layer and the HOMO level of a first hole transport layer is 0.15 eV or less.
    Type: Application
    Filed: June 16, 2021
    Publication date: June 8, 2023
    Applicants: HODOGAYA CHEMICAL CO., LTD., SFC CO., LTD.
    Inventors: Yuta HIRAYAMA, Takeshi YAMAMOTO, Kouki KASE, Kazuyuki SURUGA, Shuichi HAYASHI, Soon-Wook CHA, Sung-Hoon JOO, Byung-Sun YANG, Ji-Hwan KIM
  • Publication number: 20230171904
    Abstract: An armrest touch screen device with a water discharge function applied to a vehicle according to the present disclosure includes one or more of: a water discharge part defined by a touch screen panel and a screen body; a fitting coupling part defined by the touch screen panel and the screen body; a bolting fastening part defined by the touch screen panel, the screen body, a circuit board, and a screen casing; and a hook engaging part defined by the screen body and a screen casing. Accordingly, it is possible to prevent water permeation into the touch screen panel, reduce the weight and the material costs by reducing the number of screws, implement the robust touch screen design, and minimize the assembly dimension error.
    Type: Application
    Filed: August 10, 2022
    Publication date: June 1, 2023
    Inventors: Ji-Hwan Kim, Tae-Hoon Lee, Byeong-Seon Son, Seon-Chae Na, Sang-Ho Kim, Sang-Hoon Park, Sang-Kil Park
  • Publication number: 20230166651
    Abstract: In one aspect, an armrest lighting control device of a vehicle according to the present disclosure comprises a switch controller configured to produce a lighting color change effect or produce a fade-in/fade-out effect or an effect of turning off lighting by outputting a lighting-off signal from a lighting turning-off position of a switch lighting unit on the basis of a sensor signal from an acceleration sensor made by detecting a change in upward/downward armrest change angle of an armrest having the switch lighting unit directed toward a rear seat.
    Type: Application
    Filed: August 10, 2022
    Publication date: June 1, 2023
    Inventors: Ji-Hwan Kim, Tae-Hoon Lee, Byeong-Seon Son, Seon-Chae Na, Sang-Ho Kim, Sang-Hoon Park, Seong-Youn Jo, Yeong-Gil So
  • Publication number: 20230170001
    Abstract: An integrated circuit (IC) chip includes a plurality of interlayer channels; at least one data pad; an identification (ID) generation circuit suitable for generating a chip ID signal by decoding a command/address signal; a first transmission circuit suitable for transferring a plurality of internal data pieces to a transmission path by aligning a plurality of interlayer data pieces respectively transferred from the plurality of interlayer channels according to a plurality of strobe signals while selectively inverting the plurality of interlayer data pieces according to the chip ID signal; and a second transmission circuit suitable for transferring the plurality of internal data pieces from the transmission path to the at least one data pad.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 1, 2023
    Inventors: Chang Kwon LEE, Ji Hwan KIM
  • Publication number: 20230148364
    Abstract: A current mirror circuit includes a first transistor configured to be supplied with a data current from a data driving circuit; a second transistor configured to drive a light emitting diode by mirroring the data current transferred to the first transistor; and a voltage compensation circuit disposed between one terminal of the first transistor and one terminal of the second transistor and configured to compensate for a difference between voltages of the one terminals of the first transistor and the second transistor.
    Type: Application
    Filed: October 5, 2022
    Publication date: May 11, 2023
    Inventors: Ji Hwan KIM, Sang Suk KIM, Jang Su KIM
  • Publication number: 20230137213
    Abstract: The present invention relates to a novel phenanthroline-based compound and an organic light-emitting device having high efficiency characteristics comprising same. More particularly, the present invention relates to a phenanthroline-based compound exhibiting high efficiency by including a phenanthroline-based compound having a specific structure as a material for a charge generation layer in an organic light-emitting device, and to an organic light-emitting device comprising same, wherein [Chemical Formula A] is the same as described in the detailed description of the invention.
    Type: Application
    Filed: March 11, 2021
    Publication date: May 4, 2023
    Inventors: Sung Hoon JOO, Bong-Ki SHIN, Byung-Sun YANG, Ji-Hwan KIM, Hyeon Jun JO, Sungeun CHOI
  • Publication number: 20230138055
    Abstract: The triarylamine compound having a specific structure in the present invention is excellent in hole injection/transport ability, stability and durability of thin film. By selecting the triarylamine compound having a specific structure as the material for the hole transport layer, holes injected from the anode side can be efficiently transported. Furthermore, various organic EL devices combining luminescent materials having a specific structure or the like exhibit good device characteristics. The triarylamine compound having a specific structure in the present invention is excellent in hole injection/transport ability, stability and durability of thin film. By selecting the triarylamine compound having a specific structure as the material for the hole transport layer, holes injected from the anode side can be efficiently transported. Furthermore, various organic EL devices combining luminescent materials having a specific structure or the like exhibit good device characteristics.
    Type: Application
    Filed: February 16, 2021
    Publication date: May 4, 2023
    Applicants: Hodogaya Chemical Co., Ltd., SFC Co., Ltd.
    Inventors: Junichi Izumida, Kouki Kase, Takeshi Yamamoto, Kazuyuki Suruga, Shuichi Hayashi, Norimasa Yokoyama, Soon-wook Cha, Sung-hoon Joo, Byung-sun Yang, Ji-hwan Kim
  • Publication number: 20230139426
    Abstract: Provided is a method of controlling liquid medication injection including: receiving, by an electronic device for controlling liquid medication injection, blood glucose values measured by a liquid medication injection device in which a liquid medication injection logic is programmed; generating, by the electronic device for controlling liquid medication injection, a blood glucose change pattern by using the blood glucose values over time; generating, by the electronic device for controlling liquid medication injection, a signal for changing the liquid medication injection logic taking into account a directivity of the change in the blood glucose value according to the blood glucose change pattern; and transmitting, by the electronic device for controlling liquid medication injection, the signal for changing the liquid medication injection logic to the liquid medication injection device.
    Type: Application
    Filed: March 9, 2021
    Publication date: May 4, 2023
    Inventors: In Wook Bin, Ji Hwan Kim