Patents by Inventor Hwi Kim

Hwi 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).

  • WEARABLE GLASSES-TYPE DEVICE AND METHOD FOR PROVIDING VIRTUAL IMAGES OF THE GLASSES-TYPE DEVICE
    Publication number: 20220221720
    Abstract: A glasses-type device can include a display part configured to emit image light serving as an image source of a virtual image; a diffraction element configured to reflect and diffract the image light at a predetermined angle; and a first holographic optical element disposed on at least a portion of glass of the glasses-type device, in which the first holographic optical element is configured to cancel dispersion of the image light that is reflected and diffracted by the diffraction element, and reflect the light in which dispersion is canceled to display a virtual image corresponding to the image light.
    Type: Application
    Filed: June 17, 2021
    Publication date: July 14, 2022
    Applicant: LG ELECTRONICS INC.
    Inventors: Seungyong SHIN, Changkyu HWANG, Seungsu YANG, Hwi KIM, Sangyoon KIM
  • ELECTRONIC DEVICE AND METHOD FOR DISPLAYING HISTORY OF EXECUTED APPLICATION THEREOF
    Publication number: 20220214783
    Abstract: Disclosed is an electronic device that includes a display that outputs execution screens of a plurality of applications, a memory that stores the plurality of applications, and a processor electrically connected with the display and the memory. The processor retrieves a history of one or more applications among the plurality of applications that were previously executed in the electronic device, in response to a user input detected by the electronic device and outputs the history on the display based on information about the one or more applications and information about layouts of execution screens of the one or more applications. If at least one of the one or more applications is selected from the history, the processor outputs an execution screen of the selected application on the display according to the corresponding layout.
    Type: Application
    Filed: March 28, 2022
    Publication date: July 7, 2022
    Inventors: Jeong Won KO, Mun Hwi KIM, Joon Hwan KIM, Hye Jin KIM, Kyung Wook RO, Myoung Soo PARK, Jung Woo SHIN, Ji Hun LEE, Han Ju CHO
  • Display device
    Patent number: 11373588
    Abstract: A display device includes pixels which are connected to first scan lines, second scan lines, third scan lines, emission control lines, and data lines; a scan driver which supplies a bias scan signal to each of the third scan lines at a first frequency and supplies a scan signal to each of the first scan line and the second scan line at a second frequency which corresponds to an image refresh rate of each of the pixels; an emission driver which supplies an emission control signal to each of the emission control lines at the first frequency; a data driver which supplies a data signal to each of the data lines at the second frequency; and a timing controller which controls driving of the scan driver, the emission driver, and the data driver.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: June 28, 2022
    Inventors: Dong Hwi Kim, Na Young Kim, Jin Jeon
  • HEAT TREATMENT METHOD FOR A VEHICLE COMPONENT
    Publication number: 20220178010
    Abstract: A heat treatment method of a component for a vehicle includes: heating an inner space of a heat treatment furnace in which a component for a vehicle is disposed in the inner space; stabilizing hydrogen (H2) by injecting the H2 into the inner space; and performing nitrification heat treatment for the component by injecting only ammonia (NH3) into the inner space after the stabilizing. The heat treatment method may adjust the degree of vacuum and the flow rate instead of a Kn without additionally injecting the H2 gas into an NH3 gas, thereby implementing the nitrification heat treatment of a quality similar to that of a conventional nitrification heat treatment for a short time.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 9, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong-Hwi Kim, Soon-Woo Kwon, Chung-An Lee, Hyun-Ki Kim, Seung-Hyun Hong, Min-Woo Kang
  • Multi-input charging system and method using motor driving system
    Patent number: 11351875
    Abstract: A multi-input charging system and a multi-input charging method using a motor driving system can promptly compulsorily discharge a high charging voltage formed in a neutral point capacitor forming a neutral point voltage in a charging process and formed in a DC capacitor between an inverter and a battery.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: June 7, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chae Duck Chon, Jung Hwi Kim, Tae Hee Jung, Soung Han Noh
  • DC-to-DC converter including flying capacitor
    Patent number: 11356021
    Abstract: A DC-to-DC converter includes a first capacitor, first, second, third, and fourth switches connected in series between first and second electrodes of the first capacitor, a second capacitor connected to a connection node of the first switch and the second switch and a connection node of the third switch and the fourth switch, an inductor connected to a connection node of the second switch and the third switch, and a controller that controls an on/off state of each of the first to fourth switches on the basis of a value obtained by applying a reciprocal of a detection current that is a measured current flowing through the inductor to a difference between a first detection voltage and a first voltage instruction value and a difference between a second detection voltage and a second voltage instruction value.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: June 7, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jung Hwi Kim, Jung Mo Yu, Yong Jae Lee, Jae Ho Hwang, Joo Young Park, Jae Hyeon Park
  • Deposition mask and method of manufacturing the deposition mask
    Patent number: 11345988
    Abstract: A method of manufacturing a deposition mask includes preparing a mask-target substrate which has one surface on which a sacrificed layer pattern is formed and comprises a cover area covered by the sacrificed layer pattern and a plurality of exposed areas exposed by the sacrificed layer pattern; forming holes in the exposed areas of the mask-target substrate by emitting laser toward the mask-target substrate; and removing the sacrificed layer pattern, wherein the sacrificed layer pattern has a higher reflectance with respect to the laser than a reflectance of the mask-target substrate.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: May 31, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hwi Kim, In Bae Kim, Sung Soon Im, Kyu Hwan Hwang
  • Pixel and display device having the same
    Patent number: 11348512
    Abstract: A pixel for a display device includes a light-emitting element, a first transistor including a first electrode electrically connected to a first node and controlling a driving current, a second transistor electrically connected between a data line and the first node and being turned on in response to a first scan signal supplied through a first scan line, a third transistor electrically connected between the second node and a third node electrically connected to a second electrode of the first transistor and being turned on in response to the first scan signal, and a fourth transistor being turned on in response to a second scan signal supplied through a second scan line, and applying a bias voltage to the first transistor. The fourth transistor is turned on at a first frequency. The second and third transistors are turned on at a second frequency different from the first frequency.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: May 31, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Na Young Kim, Dong Hwi Kim, Jin Jeon
  • AUGMENTED REALITY DISPLAY HAVING IMPROVED FOV, AND WAVEGUIDE DEVICE AND DIFFRACTIVE OPTICAL STRUCTURES THEREOF
    Publication number: 20220163797
    Abstract: Various embodiments may provide an augmented reality display having an improved FOV, and a waveguide device and diffractive optical structures thereof. The augmented reality display may comprise: a light source configured to generate light related to an image; and the waveguide device for outputting at least a part of the light. The waveguide device may comprise: a waveguide for guiding light therein; and the diffractive optical structures arranged on a first surface and a second surface of the waveguide.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 26, 2022
    Inventor: Hwi KIM
  • FTIR-BASED DIFFRACTIVE OPTICAL STRUCTURE, AND WAVEGUIDE DEVICE AND AUGMENTED REALITY DISPLAY EACH INCLUDING SAME
    Publication number: 20220146825
    Abstract: Various embodiments relate to an FTIR-based diffractive optical structure, and a waveguide device and an augmented reality display each including same. The augmented reality display may comprise: a projector configured to provide light related to an image; and a waveguide device for outputting at least a part of the light, wherein: the waveguide device comprises a waveguide and a diffractive optical structure disposed on one surface of the waveguide; and the diffractive optical structure comprises an expansion grating disposed at the one surface of the waveguide and an output grating disposed along the axis perpendicular to the one surface of the waveguide and overlapping at least a partial area of the expansion grating.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 12, 2022
    Inventor: Hwi KIM
  • STAGE CIRCUIT AND A SCAN DRIVER INCLUDING THE SAME
    Publication number: 20220130313
    Abstract: A stage circuit including: a first sub-stage circuit coupled to a first input terminal receiving an input signal, a second input terminal receiving a first clock signal, and a third input terminal receiving a second clock signal, the first sub-stage circuit controlling a voltage of a first node, a second node, and a third node based on the input signal and the first and second clock signals, and supplying a first scan signal to a first output terminal based on the voltage of the second and third nodes; and a second sub-stage circuit coupled to the second input terminal, a fourth input terminal receiving a third clock signal, and the first and second nodes, the second sub-stage circuit supplying a second scan signal to a second output terminal based on the first and third clock signal, and the voltage of the first and second nodes.
    Type: Application
    Filed: January 6, 2022
    Publication date: April 28, 2022
    Inventors: Na Young KIM, Dong Hwi KIM, Jin JEON
  • DISPLAY DEVICE
    Publication number: 20220115408
    Abstract: A display device includes a first region and a second region each including a plurality of pixels, and a plurality of wires connected to the plurality of pixels, respectively, to transmit a signal, where the number of pixels per unit area in the second region is less than the number of pixels per unit area in the first region, and the number of wires per unit area in the second region is less than the number of wires per unit area in the first region.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 14, 2022
    Inventors: Dong-Hwi KIM, Jin JEON
  • DISPLAY PANEL AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20220109042
    Abstract: A display device includes a substrate, a first barrier layer on the substrate, a lower pattern on the first barrier layer and having a mesh shape defining a disconnection area, a second barrier layer on the first barrier layer, covering the lower pattern, and contacting the first barrier layer in the disconnection area, and a first active pattern on the second barrier layer and overlapping the lower pattern, a gate electrode on the first active pattern and overlapping the lower pattern, a first gate line on the first active pattern extending in a first direction, a second active pattern on the first gate line, a second gate line on the second active pattern extending in the first direction, and a data line on the second gate line extending in a second direction crossing the first direction.
    Type: Application
    Filed: June 28, 2021
    Publication date: April 7, 2022
    Inventors: NA-YOUNG KIM, DONG-HWI KIM, CHEOLSU KIM, INJUN BAE, WOORI SEO, YOUNGTAEK OH
  • Electronic device and method for displaying history of executed application thereof
    Patent number: 11287954
    Abstract: Disclosed is an electronic device that includes a display that outputs execution screens of a plurality of applications, a memory that stores the plurality of applications, and a processor electrically connected with the display and the memory. The processor retrieves a history of one or more applications among the plurality of applications that were previously executed in the electronic device, in response to a user input detected by the electronic device and outputs the history on the display based on information about the one or more applications and information about layouts of execution screens of the one or more applications. If at least one of the one or more applications is selected from the history, the processor outputs an execution screen of the selected application on the display according to the corresponding layout.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: March 29, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Won Ko, Mun Hwi Kim, Joon Hwan Kim, Hye Jin Kim, Kyung Wook Ro, Myoung Soo Park, Jung Woo Shin, Ji Hun Lee, Han Ju Cho
  • STEEL FOR GEAR AND METHOD FOR MANUFACTURING GEAR USING THE SAME
    Publication number: 20220090244
    Abstract: A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following <Relationship Formula 1>: 0.055<[Nb]+[V]<0.100??<Relationship Formula 1>, wherein [Nb] represents a content of Nb and [V] represents a content of V.
    Type: Application
    Filed: April 19, 2021
    Publication date: March 24, 2022
    Inventors: In Beom Lee, Min Woo Kang, Min Woo Kang, Dong Hwi Kim, Chang Won Kang, Myung Sik Kim, Sung Min Hong, Gung Seung Nam, Sang Won Lee
  • INK CONTAINING LIGHT-EMITTING ELEMENTS AND METHOD OF FABRICATING DISPLAY DEVICE USING THE SAME
    Publication number: 20220093817
    Abstract: An ink includes a solvent, and light-emitting elements dispersed in the solvent, each of the light-emitting elements comprising semiconductor layers and an insulating film partially surrounding outer surfaces of the semiconductor layers, wherein the solvent has Hansen solubility parameters of a polarity parameter between about 4 and about 9 and a hydrogen bonding parameter between about 6 and about 11.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 24, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyo Jin KO, Duk Ki KIM, Yong Hwi KIM, Jun Bo SIM, Na Mi HONG, Jong Hyuk KANG, Gyu Bong KIM, Hoi Lim KIM, Sae Na YUN, Chang Hee LEE, Hyun Deok IM, Eun A CHO, Jae Kook HA
  • DEPOSITION MASK, METHOD OF MANUFACTURING THE SAME, AND METHOD OF MANUFACTURING DISPLAY PANEL
    Publication number: 20220093863
    Abstract: A deposition mask for manufacturing a display panel includes a metallic base having a thickness of about 50 micrometers to about 200 micrometers and a plurality of openings defined therein, wherein at least some of the openings include a first opening having a first width and a second opening having a second width smaller than the first width respectively defined along a thickness direction of the metallic base, and wherein the metallic base includes a first part in which the first opening is defined, and a second part in which the second opening is defined, the second part having a width that increases in a direction downward from a top surface of the metallic base along the thickness direction of the metallic base.
    Type: Application
    Filed: May 20, 2021
    Publication date: March 24, 2022
    Inventors: Kyu Hwan HWANG, Jeongkuk Kim, Hwi Kim, Kanghyun Nam, Sangha Park, Areum Lee, Da-Hee Jeong, Eunbee Jo, Seungmin Jin, Jaemin Hong
  • HIGH STRENGTH CARBURIZING STEEL HAVING IMPROVED DURABILITY
    Publication number: 20220090253
    Abstract: A carburizing steel includes, based on a total wt % of the carburizing steel: 0.1 wt % or more and 0.3 wt % or less of C (carbon); 2.0 wt % or more and 2.7 wt % or less of Cr (chrome); 0.4 wt % or more of Si (silicon); 0.3 wt % or more and 0.7 wt % or less of Mo (molybdenum); less than 0.7 wt % of Mn (manganese); and 0.6 wt % or more and 1.5 wt % or less of Ni (nickel).
    Type: Application
    Filed: January 14, 2021
    Publication date: March 24, 2022
    Inventors: Min-Woo Kang, Soon-Woo Kwon, Min-Woo Kang, Hyun-Ki Kim, Dong-Hwi Kim, In-Beom Lee, Chung-An Lee, Seung-Hyun Hong
  • Neural networks using cross-point array and pattern readout method thereof
    Patent number: 11275999
    Abstract: A neural network using a cross-point array is provided along with a pattern readout method thereof. Resistive memory devices are stacked vertically to form the neural network as synaptic devices. The connection strength of the signal passing between two neurons is controlled by the positive and negative conductance of the resistive memory devices and it is possible to recognize and readout patterns by learning in the cross-point array.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: March 15, 2022
    Assignee: Seoul National University R&DBFoundation
    Inventors: Byung-Gook Park, Min-Hwi Kim, Sungjun Kim
  • PIXEL AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20220076617
    Abstract: A display device includes: a pixel unit having a plurality of pixels; a timing controller supplying respective scan start signals to a plurality of scan drivers and an emission start signal to an emission driver, in response to synchronization signals supplied from the outside; the emission driver supplying an emission signal to emission control lines connected to the pixels based on the emission start signal; the scan drivers supplying scan signals to the scan lines connected to the pixels based on the scan start signal; and a data driver supplying a data signal to data lines connected to the pixels, and at least one of a frequency of the emission start signal and frequencies of the scan start signals may be a first frequency that is determined independently of a driving frequency when the driving frequency is less than or equal to a threshold value.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Na Young KIM, Dong Hwi Kim, Jin Jeon