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).

  • POWER SUPPLY DEVICE FOR VEHICLE CHILD SEAT
    Publication number: 20220105837
    Abstract: A power supply device for a vehicle child seat includes an anchor housing mounted on a rear seat, an anchor and a power supply connector, which are positioned within the anchor housing, a latch bar mounted on a child seat and fastened on the anchor in a locked manner, a connector module slidably fastened to the latch bar, and a power connection connector integrally combined with the connector module and removably fastened to the power supply connector.
    Type: Application
    Filed: March 30, 2021
    Publication date: April 7, 2022
    Inventors: Byeong Seon Son, Tae Hoon Lee, Seon Chae Na, Ji Hwan Kim, Sang Hoon Park, Sang Ho Kim, Seung Hyun Kim
  • ORGANIC LIGHT-EMITTING ELEMENT USING POLYCYCLIC AROMATIC DERIVATIVE COMPOUND
    Publication number: 20220102635
    Abstract: An organic light-emitting element according to the present invention employs a polycyclic aromatic derivative compound in a light-emitting layer inside the element, and further comprises a capping layer. Thus, the organic light-emitting element can be made highly efficient and can be useful for a device selected from among a flat panel display device, a flexible display device, a monochrome or white flat panel lighting device, and a monochrome or white flexible lighting device.
    Type: Application
    Filed: November 28, 2019
    Publication date: March 31, 2022
    Applicants: SFC CO., LTD., HODOGAYA CHEMICAL CO., LTD.
    Inventors: Sung-hoon JOO, Byung-sun YANG, Su-jin KIM, Ji-hwan KIM, Hyeon-jun JO, Sung-eun CHOI, Bong-ki SHIN, Young-hwan PARK, Shuichi HAYASHI, Takeshi YAMAMOTO, Shunji MOCHIZUKI, Yuta HIRAYAMA
  • Side bolster adjustment apparatus, side bolster adjustment system, and side bolster adjustment method for vehicle seat
    Patent number: 11285855
    Abstract: A side bolster adjustment apparatus of a vehicle seat may include a guide frame which is mounted to a seat back frame, and is formed with a guide groove; a slider which slides along a direction in which a bolster protrudes from a seat back, which is the longitudinal direction of the guide groove, by a guide means formed in the guide groove; a lead screw which is provided to penetrate the slider, and is mounted in the longitudinal direction of the guide groove; a motor which is coupled to the lead screw and selectively rotate the lead screw; and a bolster plate which is coupled to the slider, and rotates around a vertical longitudinal direction of the seat back by operation of the slider.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: March 29, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Hyundai Transys Inc.
    Inventors: Sang-Hark Lee, Tae-Hoon Lee, Ji-Hwan Kim, Sang-Do Park, Ho-Sub Lim
  • Organic heterocyclic compound and light-emitting diode comprising same
    Patent number: 11279693
    Abstract: The present disclosure relates to an organic compound represented by Chemical Formula A or B, and an organic light-emitting diode comprising the same.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: March 22, 2022
    Assignee: SFC CO., LTD.
    Inventors: Soon-Wook Cha, Jung-Ho Yoo, Ji-Hwan Kim, Sang-Woo Park, Yoona Shin, Jea-Geon Lim
  • Laser apparatus and manufacturing method of display apparatus using the same
    Patent number: 11282872
    Abstract: A laser apparatus includes a laser generator configured to generate a first laser beam proceeding along a first direction, and an inversion module configured to convert the first laser beam to a second laser beam proceeding along the first direction, the inversion module including a splitter configured to form a reflected laser beam by partially reflecting the first laser beam, and a transmitted laser beam by partially transmitting the first laser beam, and a prism configured to reflect the reflected laser beam.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Min Lee, Ji-Hwan Kim, Jongoh Seo, Byung Soo So, Dong-Sung Lee, Jonghoon Choi
  • Device and method for detecting position in driving-sensing integrated camera module
    Patent number: 11268831
    Abstract: A position detecting device includes a detector circuit detecting a detection signal including information on a position of a magnet from a coil disposed in a housing and opposing the magnet, which is disposed in a lens barrel; and a control circuit converting the detection signal into a count value, determining a conversion formula based on the count value and a velocity of change in the count value, and detecting a position value using the determined conversion formula.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: March 8, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Je Hyeon Yu, Jung Eun Youm, Ji Hwan Kim, Ja Hwi Cho
  • LED Driving Device and LED Driving Method
    Publication number: 20220070983
    Abstract: The present disclosure relates to an LED driving technique. The present disclosure provides a technique of measuring a time for reaching a forward voltage of a currently driven LED by comparing a forward voltage sensed in a previous scan line and an LED voltage sensed in a current scan line and for compensating for an ON period of a PWM (pulse width modulation) signal by the measured time for reaching the forward voltage.
    Type: Application
    Filed: August 20, 2021
    Publication date: March 3, 2022
    Inventors: Ji Hwan Kim, Kyeong Rok Lee, Jong Hyun Yoon
  • LASER IRRADIATION APPARATUS
    Publication number: 20220063015
    Abstract: A laser irradiation apparatus includes a laser beam generator that generates a first laser beam, a beam expander that expands the first laser beam and outputs the expanded first laser beam as a second laser beam, a beam splitter that splits the second laser beam into third laser beams and outputs the third laser beams, and a beam condenser that condenses the third laser beams and outputs condensed third laser beams. The beam expander includes a first lens having a first focal length and a second lens having a second focal length. The first lens is disposed between the laser beam generator and the second lens, the second lens is disposed between the first lens and the beam splitter, and the laser beam generator is spaced apart from the first lens by the first focal length.
    Type: Application
    Filed: May 7, 2021
    Publication date: March 3, 2022
    Applicant: Samsung Display Co., Ltd.
    Inventors: JI-HWAN KIM, BYUNG SOO SO, JONGHOON CHOI
  • LOCKING APPARATUS OF SEAT BELT BUCKLE FOR VEHICLE
    Publication number: 20220063552
    Abstract: A locking apparatus of a buckle of a seat belt for vehicles includes a sector gear bracket configured to be integrally coupled to a rear pipe which is coupled to a seat cushion frame, wherein the sector gear bracket has: an arc-shaped locking hole; and a sector gear arranged along the locking hole as an internal gear; a pole bracket located at one side of the sector gear bracket, wherein the pole bracket has a shaft part which is configured to pass through the locking hole and the seat cushion frame and then be integrally coupled to a lower end of the buckle; and a lock gear arranged on the pole bracket as an external gear.
    Type: Application
    Filed: February 23, 2021
    Publication date: March 3, 2022
    Inventors: Byeong Seon Son, Tae Hoon Lee, Sang Ho Kim, Ji Hwan Kim, Sang Hoon Park, Seon Chae Na, Byoung Tae Seo
  • APPARATUS FOR CONTROLLING LENS MODULE AND REDUCING OFFSET OF HALL SENSOR
    Publication number: 20220057646
    Abstract: An apparatus configured to reduce an offset of a Hall sensor includes a voltage-current conversion circuit and a current mirror circuit. The voltage-current conversion circuit is configured to generate a current configured to decrease when a voltage of an input terminal to which a bias current of a Hall sensor is input increases and increase when the voltage of the input terminal decreases. The current mirror circuit has a current mirror structure configured to feedback the bias current based on the current generated by the voltage-current conversion circuit.
    Type: Application
    Filed: February 3, 2021
    Publication date: February 24, 2022
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ji Hwan KIM, Koon Shik CHO, Youn Joong LEE
  • DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20220045107
    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: April 26, 2021
    Publication date: February 10, 2022
    Inventors: JONGHOON CHOI, JONGOH SEO, JI-HWAN KIM, JONGJUN BAEK, BYUNG SOO SO
  • SEAT RECLINING DEVICE
    Publication number: 20220032819
    Abstract: In a seat reclining device, a seatback frame forming a skeleton of a seatback is coupled to a seat cushion frame to be rotatable about a shaft with respect to the seat cushion frame. One end portion of a first sliding bracket is rotatably coupled to a middle portion of the seatback frame by a driving unit. The other end portion of the first sliding bracket extends toward a vehicle body located behind the seatback. A second sliding bracket is mounted on the vehicle body located behind the seatback and extends toward the first sliding bracket in a front and rear longitudinal direction to be connected to the first sliding bracket. The second sliding bracket is configured to guide a sliding movement of the first sliding bracket while the first sliding bracket is being rotated.
    Type: Application
    Filed: January 20, 2021
    Publication date: February 3, 2022
    Applicants: Hyundai Motor Company, Kia Motors Corporatlon, Hyundai Transys Inc., Daechang Seat Co., Ltd-Dongtan
    Inventors: Sang Hoon PARK, Tae Hoon Lee, Byeong Seon Son, Sang Ho Kim, Ji Hwan Kim, Seon Chae Na, Jeon Jin Lim, Kwang Hun Choi
  • LED Driving Device and LED Driving Method
    Publication number: 20220028328
    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: Application
    Filed: July 15, 2021
    Publication date: January 27, 2022
    Inventors: Ji Hwan Kim, Jin Ho Choi, Jang Su Kim
  • LED Driving Device and LED Driving Method
    Publication number: 20220028310
    Abstract: The present disclosure relates to a technology for driving an LED, comprising sensing a forward-direction voltage of an LED and determining whether or not the LED is defective by comparing the forward-direction voltage with a comparative object voltage, wherein the comparative object voltage is continuously updated using a sensed forward-direction voltage so that the comparative object voltage may be set to be an unfixed value, that is, a value reflecting a current state of an LED. This allows a more accurate detection of a defect of an LED.
    Type: Application
    Filed: July 15, 2021
    Publication date: January 27, 2022
    Inventors: Ji Hwan Kim, Jong Min Lee
  • ORGANOELECTROLUMINESCENT DEVICE USING POLYCYCLIC AROMATIC COMPOUNDS
    Publication number: 20220006013
    Abstract: Disclosed is a polycyclic aromatic compound that can be employed in an organic layer of an organic electroluminescent device. Also disclosed is an organic electroluminescent device including the polycyclic aromatic compound. The use of the polycyclic aromatic compound significantly improves the luminous efficiency of the device and ensures high efficiency and long lifetime of the device.
    Type: Application
    Filed: March 11, 2021
    Publication date: January 6, 2022
    Applicant: SFC CO., LTD.
    Inventors: Sung-hoon JOO, Bong-ki SHIN, Byung-sun YANG, Ji-hwan KIM, Hyeon-jun JO, Sung-eun CHOI
  • Laser crystallization system and laser crystallization method
    Patent number: 11171000
    Abstract: A laser crystallization system includes a transfer part that transfers a substrate on which an amorphous silicon thin film is deposited into a chamber, a laser irradiation part that irradiates an excimer laser to the substrate for crystallization of the amorphous silicon thin film in the chamber, a stage that supports the substrate in the chamber, a measuring part that measures a light transmittance value of the substrate, and a controller that controls the laser irradiation part to irradiate the excimer laser to the substrate when the light transmittance value is equal to or lower than a reference transmittance value and controls the laser irradiation part not to irradiate the excimer laser to the substrate when the light transmittance value is higher than the reference transmittance value.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: November 9, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jongoh Seo, Jonghoon Choi, Ji-Hwan Kim, Byung Soo So, Dong-Min Lee, Dong-Sung Lee
  • Memory device including grouped page buffers and read operation method thereof
    Patent number: 11152072
    Abstract: A memory device includes a memory cell array including a plurality of memory cells, a plurality of first even page buffers suitable for reading data from first even-numbered memory cells among the plurality of memory cells, and storing the read data, a plurality of first odd page buffers suitable for reading data from first odd-numbered memory cells among the plurality of memory cells, and storing the read data, and a plurality of first cache buffers corresponding to the first even page buffers, suitable for storing data received through a first common node from the first even page buffers, and a plurality of second cache buffers corresponding to the first odd page buffers, and suitable for storing data received through the first common node from the first odd page buffers.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 19, 2021
    Assignee: SK hynix Inc.
    Inventors: Jung-Mi Ko, Ji-Hwan Kim, Seong-Je Park
  • Organic light-emitting diode having long lifespan, low voltage, and high efficiency property
    Patent number: 11133472
    Abstract: The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 28, 2021
    Assignee: SFC CO., LTD.
    Inventors: Soon-Wook Cha, Sang-Woo Park, Jung-Ho Yoo, Ji-Hwan Kim, Sung Woo Kim, Hyeon Jun Jo, Young-Hwan Park
  • ORGANIC LIGHT-EMITTING DIODE HAVING LONG LIFESPAN, LOW VOLTAGE, AND HIGH EFFICIENCY PROPERTY
    Publication number: 20210296590
    Abstract: The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.
    Type: Application
    Filed: September 14, 2017
    Publication date: September 23, 2021
    Inventors: Soon-Wook CHA, Sang-Woo PARK, Jung-Ho YOO, Ji-Hwan Kim, Sung Woo KIM, Hyeon Jun JO, Young-Hwan PARK
  • ORGANIC LIGHT-EMITTING DIODE HAVING LONG LIFESPAN, LOW VOLTAGE, AND HIGH EFFICIENCY PROPERTY
    Publication number: 20210288266
    Abstract: The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.
    Type: Application
    Filed: September 14, 2017
    Publication date: September 16, 2021
    Inventors: Soon-Wook CHA, Sang-Woo PARK, Jung-Ho YOO, Ji-Hwan KIM, Sung Woo KIM, Hyeon Jun JO, Young-Hwan PARK