Patents by Inventor Hyuk Choi

Hyuk Choi 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).

  • Low cost micro OLED structure and method
    Patent number: 11158690
    Abstract: A method of manufacturing a display system includes forming a display element having a display active area over a silicon backplane, forming a display driver integrated circuit (DDIC), and bonding the display element to the display driver integrated circuit (DDIC). The display active area may include a light emitting diode such as an organic light emitting diode (OLED). Separately forming the display and the display circuitry may simplify formation of the OLED and allow for a higher density control interface between the display and the DDIC.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 26, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Min Hyuk Choi, Cheonghong Kim, Zhiming Zhuang
  • Phase-transition optical isomer compound, transparent electroluminescent display device and method of fabricating the transparent electroluminescent display device
    Patent number: 11158801
    Abstract: A phase-transition optical isomer compound is described, a transparent EL display device including the phase-transition optical isomer compound and a method of fabricating the EL display device, where a phase of the phase-transition optical isomer compound is transited by light irradiation and a second electrode of the EL display device is selectively deposited without a masking process.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 26, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Jun-Sik Hwang, Nam Ki, Chang-Woo Chun, Eun-Ji Sim, Soo-Hyuk Choi
  • Battery-to-vehicle charging system
    Patent number: 11142085
    Abstract: A battery-to-vehicle charging system includes: a vehicle including an on-board charger including a power factor correction circuit having a boost converter circuit, a first battery that is charged with a charge voltage output from the on-board charger, and a first controller controlling a charge process based on a type of a charge power source provided from the outside; and a mobile energy storage device including a second battery storing a direct current (DC) charge power to be provided to the first battery, and a second controller providing a determination signal for the type of the charge power source to the first controller, in which when the first controller receives the determination signal from the second controller and the charge power source is determined as a mobile energy storage device, the first controller controls the power factor correction circuit to operate as a boost converter.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 12, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Hyuk Choi, Byeong Seob Song
  • SYSTEMS AND METHODS FOR DISPLAYING FOVEATED IMAGES
    Publication number: 20210303063
    Abstract: In one embodiment, a computing system may determine a first region and a second region of an image based on gaze data of a user. The second region of the image may be displayed with lower image resolution. The system may access a first pixel value associated with the first region of the image and cause a first source driver circuit to generate a first pixel signal. The first pixel signal may be configured to control a luminance of a first number of pixels of the display. The system may access a second pixel value associated with the second region of the image and cause a second source driver circuit to generate a second pixel signal. The second pixel signal may be configured to control a second number of pixels, which is larger than the first number and may include a longer pulse duration than the first pixel signal.
    Type: Application
    Filed: April 1, 2021
    Publication date: September 30, 2021
    Inventors: Min Hyuk Choi, Cheonhong Kim, Youngshik Yoon
  • PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME
    Publication number: 20210301104
    Abstract: Provided is a plasticizer composition including a cyclohexane-1,2-diester-based material of Formula 1 and a trimellitate-based material of Formula 2: wherein in Formula 1 and Formula 2, R1to R5 are each independently an alkyl group of 8 to 10 carbon atoms.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 30, 2021
    Inventors: Hyun Kyu KIM, Yun Ki CHO, Woo Hyuk CHOI, Jeong Ju MOON, Joo Ho KIM, Seok Ho JEONG
  • Heterocyclic compound and organic light emitting element using same
    Patent number: 11133477
    Abstract: The present application relates to a hetero-cyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 28, 2021
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji Lee, Jun-Tae Mo, Yong-Geun Jung, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • Compression release type engine brake and operating method for the same
    Patent number: 11105230
    Abstract: An compression-release engine brake opens an exhaust valve at an end of a compression stroke for performing braking function. The compression-release engine brake includes: an exhaust cam including a main cam lobe and a brake cam lobe, an exhaust rocker arm including a roller mounted on one end of the exhaust rocker arm contacting or not contacting the exhaust cam and rotating around a rocker arm shaft by rotation of the exhaust cam, a valve bridge disposed at the other end of the exhaust rocker arm and connected with a pair of exhaust valves, and a reset module disposed between the exhaust rocker arm and valve bridge, contacting the roller with the brake cam lobe according to being suppled of engine brake oil, and exhausting the engine brake oil after opening the exhaust valve by rotation of the exhaust cam.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: August 31, 2021
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Kyung Ryull Kim, Dong Hyuk Choi
  • DIVERSIFIED AND CONNECTED FREIGHT ALLOCATION SYSTEM AND METHOD
    Publication number: 20210256646
    Abstract: The present disclosure relates to a diversified and connected freight allocation system and method, and more particularly, to a diversified and connected freight allocation system and method capable of reducing company's costs and improving resource utilization and efficiency. In an aspect of the present disclosure, a diversified and connected freight allocation system is provided. The system includes: a data input unit; a reference information database containing reference information; and a diversified and connected freight allocation calculation unit determining diversified and connected freight allocations based on the information received from the data input unit and the reference information database.
    Type: Application
    Filed: December 30, 2020
    Publication date: August 19, 2021
    Inventors: Tae Hyun KIM, Jong In CHAE, Chang Yun CHUNG, Jun Hyuk CHOI, Seung Jin YOON, Jae Won KIM, Ok Kyung LIM, Wan Sik KIM, Eun Jeong YOO
  • Power conversion device for charging vehicle battery and method for controlling the same
    Patent number: 11091049
    Abstract: A power conversion device for charging a battery of a vehicle may include the battery, a motor for receiving a battery power source from the battery, a power controller for controlling the motor to change the battery power source into charging power, and a charging controller for selectively performing a charging power supply control for supplying the charging power to the outside and a charging power receipt control for receiving external power.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: August 17, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Byeong-Seob Song, Sam-Gyun Kim, Jae-Hyuk Choi
  • PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME
    Publication number: 20210230098
    Abstract: Provided is a plasticizer composition including: a cyclohexane-1,2-diester-based substance of the following Chemical Formula 1; and a citrate-based substance of the following Chemical Formula 2: wherein in Chemical Formula 1 and Chemical Formula 2: R1 and R2 each independently are a C8 to C10 alkyl group; and R3 to R5 each independently are a C5 to C10 alkyl group.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 29, 2021
    Inventors: Hyun Kyu KIM, Seok Ho JEONG, Woo Hyuk CHOI, Yun Ki CHO, Jeong Ju MOON, Joo Ho KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20210234102
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 29, 2021
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Hye-Su JI, Han-Kook OH, Yun-Ji LEE, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20210226133
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 22, 2021
    Applicant: LT Materials Co., Ltd
    Inventors: Han-Kook OH, Yun-Ji LEE, Hye-Su JI, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI
  • INTERNAL PRESSURE MEASURING JIG FOR CYLINDRICAL BATTERY CELL
    Publication number: 20210226265
    Abstract: An internal pressure measuring jig for a cylindrical battery cell, of the present invention, comprises: a lower jig which has a form corresponding to a cylindrical battery cell, and has a temperature measuring part and a receiving groove in which the cylindrical battery cell is separably inserted; and an upper jig which discharges gas inside the cylindrical battery cell, has a pressure measuring part for measuring the pressure of the discharged gas, and is separably coupled to the lower jig so as to close off an opening part of the receiving groove.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 22, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Myung An LEE, Joo Hwan SUNG, Jung Hoon KIM, Byung Hyuk CHOI, Ik Jong LEE
  • CYCLOHEXANE TRIESTER BASED PLASTICIZER COMPOSITION AND RESIN COMPOSITION COMPRISING THE SAME
    Publication number: 20210221976
    Abstract: A plasticizer composition which includes a lower non-hybrid-type cyclohexane triester, a lower hybrid-type cyclohexane triester, a higher hybrid-type cyclohexane triester, and a higher non-hybrid-type cyclohexane triester, wherein the alkyl groups of the cyclohexane triesters are a combination of C3-C6 alkyl groups and C7-C10 alkyl groups. When the plasticizer composition is applied to a resin, stress resistance and mechanical properties are maintained at an equivalent level or improved, migration properties, volatile loss characteristics, and plasticization efficiency are balanced, and light resistance and heat resistance are significantly improved.
    Type: Application
    Filed: October 29, 2019
    Publication date: July 22, 2021
    Inventors: Hyun Kyu KIM, Yun Ki CHO, Jeong Ju MOON, Joo Ho KIM, Seok Ho JEONG, Woo Hyuk CHOI
  • Extreme ultraviolet (EUV) mask for lithography and associated methods
    Patent number: 11054736
    Abstract: A method of manufacturing an extreme ultraviolet (EUV) mask, for use in an EUV exposure process, on a mask substrate includes constructing a first monitoring macro considering an effect caused by a slit used in the EUV exposure process, performing an optical proximity correction (OPC) using a plurality of second monitoring macros, wherein each of the plurality of second monitoring macros is substantially identical to the first monitoring macro, inputting mask tape-out (MTO) design data acquired through the OPC, preparing mask data including at least one of data format conversion, mask process correction (MPC), and job-deck for the MTO design data, and performing EUV exposure (writing) on the mask substrate based on the mask data.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 6, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woon-hyuk Choi, No-young Chung
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20210202863
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 1, 2021
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji LEE, Han-Kook OH, Hye-Su JI, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI
  • Socket module of compression release type engine brake and operating method of engine brake using thereof
    Patent number: 11047271
    Abstract: A compression release type of engine brake socket module is provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve of an engine. In particular the socket module incudes: a housing which includes an inlet through which brake oil is introduced, a brake piston mounting portion, and a reset member mounting portion communicating with the brake piston mounting portion; a brake piston that is provided to be movable in the brake piston mounting portion; a stopper disposed on one side of an inner space of the housing to limit a moving position of the brake piston; and a reset member that is provided in the reset member mounting portion, and that discharges the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 29, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Hee Jeon, Dong Hyuk Choi
  • METHODS OF TREATING CHEMOTHERAPY OR RADIOTHERAPY INDUCED NEUTROPENIA
    Publication number: 20210169847
    Abstract: A method of treating chemotherapy-induced neutropenia in a patient in need thereof according to an embodiment of the present disclosure includes administering to the patient an effective amount of Eflapegrastim. A method of treating radiation-induced neutropenia in a patient in need thereof according to an embodiment of the present disclosure includes administering to the patient an effective amount of Eflapegrastim.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 10, 2021
    Inventors: Jae Hyuk CHOI, Eun Jung KIM, Yu Yon KIM, Gyu Hyan LEE, Hyesun HAN
  • Navigation service method for providing unusable route information related to emergency area and server apparatus for the same
    Patent number: 11029169
    Abstract: Disclosed herein are a navigation service method for providing unusable route information related to an emergency area and a server apparatus therefor. The navigation service method includes constructing an emergency area resource including unusable route information related to an emergency area; and receiving trip parameters from multiple applications and transmitting a link, through which the emergency area resource is accessible, to an application, the trip parameter of which includes a request to provide unusable route information related to an emergency area, wherein transmitting the link is configured to transmit a link, through which the same emergency area resource is accessible, to applications that request provision of unusable route information related to the same emergency area.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 8, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Hyuk Choi, Young-Su Cho
  • Image sensor and image processing device including the same
    Patent number: 11012654
    Abstract: An image sensor includes a pixel array configured to receive a driving signal, sense a light signal reflected from an object in response to the driving signal, and generate pixel clock signals indicating delay of the driving signal; a reference clock circuit configured to generate a reference clock signal; and a time-to-analog convert circuit configured to convert delay times between the pixel clock signals and the reference clock signal into analog values.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: May 18, 2021
    Assignees: SK hynix Inc., RESERCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jae Hyuk Choi, Dong Uk Kim