Patents by Inventor Joo-hwan Park
Joo-hwan Park 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).
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Publication number: 20240128915Abstract: Disclosed is a motor driving apparatus including: a motor; an inverter including a switching element for driving the motor; a controller for controlling the switching element; a resolver including an excitation winding and a detection winding; and a resolver chip applying an excitation signal to the excitation winding by inputting a periodic signal from the controller, and receiving a feedback signal from the detection winding, wherein the resolver chip determines the number of rotations of the motor based on a change in a pulse width of a detection signal resulting from a comparison between a voltage of the feedback signal and a preset voltage, and output a signal to the inverter for setting an inertial driving control mode according to the number of rotations of the motor in a failure state of the controller.Type: ApplicationFiled: October 17, 2023Publication date: April 18, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Tae Hwan KANG, Hyung Min PARK, Joo Won PARK, Beom Cheol CHO, Yun Ho CHOI, Yeon Ho KIM, Won Hee JO
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Publication number: 20240128554Abstract: A button type secondary battery includes a wound electrode assembly; a lower can with the electrode assembly and an electrolyte in the lower can; a top plate to close the lower can; a positive electrode terminal coupled to the top plate through a gasket to be electrically insulated from the top plate with a portion of the positive electrode terminal passing through a hole in the top plate to be bonded to a positive electrode tab; a top insulator covering a top surface of the electrode assembly; and a bottom insulator covering a bottom surface of the electrode assembly. The top insulator and the bottom insulator are each configured to expand in volume by absorbing the electrolyte. Surfaces of at least one or more of the top insulator and the bottom insulator are coated with a protective layer configured to prevent thermal shrinkage from occurring.Type: ApplicationFiled: October 14, 2022Publication date: April 18, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Yeong Hun JUNG, Young Ji TAE, Joo Hwan SUNG, Min Su CHO, Geun Young PARK, Min Gyu KIM, Min Seon KIM, Sang Hak CHAE, Min Young JU
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Patent number: 11940837Abstract: A display that includes a display panel and a window laminated with the display panel is presented. The display panel may include: a main panel region including a first side extending in a first direction and a second side extending in a second direction crossing the first direction; a first sub-panel region that is in contact with the first side and is bent; and a second sub-panel region that is in contact with the second side and is bent. A panel corner part of the main panel region adjacent to the first sub-panel region and the second sub-panel region is rounded.Type: GrantFiled: May 29, 2019Date of Patent: March 26, 2024Assignee: Samsung Display Co., Ltd.Inventors: Seung-Hwan Cho, Jong Hyun Choi, Ju Chan Park, Joo Sun Yoon, Jong Hyuk Lee
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Patent number: 11929490Abstract: The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and the anode material layer includes large-particle graphite, a small-particle silicon-based material, and fine-particle graphite, and satisfies the following conditions 1 to 3: [Condition 1] Average diameter D50 of the large-particle graphite (D1): 1 to 50 ?m [Condition 2] Average diameter D50 of the small-particle silicon-based material (D2): 0.155D1 to 0.414D1 [Condition 3] Average diameter D50 of the fine-particle graphite (D3): 0.155D1 to 0.414D1, or 0.155D2 to 0.414D2.Type: GrantFiled: June 26, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Junghyun Choi, Hyeon Min Song, Joo Hwan Sung, Han Sol Park, Minsu Cho, Sunghae Park, Jingoo Kwak, Younguk Park, Sue Jin Kim, Jinsu Jang
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Publication number: 20240069524Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.Type: ApplicationFiled: December 27, 2022Publication date: February 29, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Yun Ho CHOI, Hyung Min PARK, Joo Won PARK, Yeon Ho KIM, Won Hee JO, Tae Hwan KANG, Beom Cheol CHO
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Publication number: 20230386836Abstract: A method of forming patterns includes: forming a hard mask layer on a target layer, coating a cleavage relief layer on the hard mask layer to fill cleavages generated in the hard mask layer, forming photoresist patterns on the cleavage relief layer, removing portions of the cleavage relief layer and portions of the hard mask layer using the photoresist patterns as a first etch mask to form hard mask patterns, removing portions of the target layer using the hard mask patterns as a second etch mask to form target layer patterns, and removing the hard mask patterns. The hard mask layer includes an amorphous carbon layer (ACL), and the cleavage relief layer includes a spin-on carbon (SOC) layer.Type: ApplicationFiled: November 4, 2022Publication date: November 30, 2023Inventors: Joo Hwan PARK, Joon Gi KWON, Myung Ok KIM
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Patent number: 11355255Abstract: Provided are a system and method for reducing the atmospheric release of radioactive materials caused by a severe accident. The system includes a steam generator disposed in a containment building, configured to generate steam by using heat of a coolant heated in a nuclear reactor, and connected to a turbine through a main steam line, a decontamination tank connected to the main steam line through a connection line and containing decontamination water for decontaminating the steam delivered from the steam generator and reducing atmospheric release of radioactive materials when a severe accident occurs, and a depressurizing power generation unit disposed on the connection line and configured to generate emergency power while depressurizing the steam delivered from the steam generator toward the decontamination tank when the severe accident occurs.Type: GrantFiled: January 22, 2020Date of Patent: June 7, 2022Assignee: Korea Atomic Energy Research InstituteInventors: Joo-Hwan Park, Sung Il Kim, Kwang Soon Ha, Byeong Hee Lee
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Publication number: 20200234836Abstract: Provided are a system and method for reducing the atmospheric release of radioactive materials caused by a severe accident. The system includes a steam generator disposed in a containment building, configured to generate steam by using heat of a coolant heated in a nuclear reactor, and connected to a turbine through a main steam line, a decontamination tank connected to the main steam line through a connection line and containing decontamination water for decontaminating the steam delivered from the steam generator and reducing atmospheric release of radioactive materials when a severe accident occurs, and a depressurizing power generation unit disposed on the connection line and configured to generate emergency power while depressurizing the steam delivered from the steam generator toward the decontamination tank when the severe accident occurs.Type: ApplicationFiled: January 22, 2020Publication date: July 23, 2020Applicant: Korea Atomic Energy Research InstituteInventors: Joo-Hwan PARK, Sung Il KIM, Kwang Soon HA, Byeong Hee LEE
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Patent number: 10468750Abstract: Provided are an antenna and an electronic device including the same. The antenna includes a substrate, an antenna radiator fed from the substrate, at least one metallic member disposed near the antenna radiator, a connector member electrically connected to the substrate, and a capacitor formed by a dielectric interposed between the connector member and the at least one metallic member.Type: GrantFiled: November 19, 2015Date of Patent: November 5, 2019Assignee: Samsung Electronics Co., LtdInventor: Joo-Hwan Park
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Patent number: 10108055Abstract: A curved liquid crystal display including a first substrate having a curved shape; a plurality of gate lines and data lines on the first substrate; a plurality of thin film transistors connected to the gate lines and data lines; a plurality of color filters on the thin film transistors; a plurality of pixel electrodes and common electrodes on the plurality of color filters, the plurality of pixel electrodes and common electrodes overlapping with each other with a first insulating layer therebetween; a second substrate having a curved shape, the second substrate facing the first substrate; vertical alignment layers on inner sides of the first substrate and the second substrate; and a liquid crystal layer between the vertical alignment layers, wherein liquid crystal molecules of the liquid crystal layer are aligned to be vertical to surfaces of the first substrate and the second substrate when an electric field is not formed.Type: GrantFiled: February 16, 2017Date of Patent: October 23, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Min Wook Park, Joo Hwan Park, Jeong Man Son, Cheong Hun Lee
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Publication number: 20170160605Abstract: A curved liquid crystal display including a first substrate having a curved shape; a plurality of gate lines and data lines on the first substrate; a plurality of thin film transistors connected to the gate lines and data lines; a plurality of color filters on the thin film transistors; a plurality of pixel electrodes and common electrodes on the plurality of color filters, the plurality of pixel electrodes and common electrodes overlapping with each other with a first insulating layer therebetween; a second substrate having a curved shape, the second substrate facing the first substrate; vertical alignment layers on inner sides of the first substrate and the second substrate; and a liquid crystal layer between the vertical alignment layers, wherein liquid crystal molecules of the liquid crystal layer are aligned to be vertical to surfaces of the first substrate and the second substrate when an electric field is not formed.Type: ApplicationFiled: February 16, 2017Publication date: June 8, 2017Inventors: Min Wook PARK, Joo Hwan PARK, Jeong Man SON, Cheong Hun LEE
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Patent number: 9588379Abstract: A curved liquid crystal display panel includes a first substrate, a liquid crystal layer and a second substrate. The first substrate includes a column spacer fixedly anchored to and protruding therefrom. The second substrate includes a stepless preliminary contact area corresponding to a contact-making free end of the column spacer where the preliminary contact area is part of a larger and also non-stepped area. The second substrate is combined with the first substrate to receive the liquid crystal layer therebetween. The non-stepped area is dimensioned to account for shift of the where the contact-making free end of the column spacer makes contact due to the curvature of the first and second substrates.Type: GrantFiled: April 9, 2014Date of Patent: March 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: Min-Wook Park, Joo-Hwan Park, Jeong-Man Son
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Patent number: 9575377Abstract: A curved liquid crystal display including a first substrate having a curved shape; a plurality of gate lines and data lines on the first substrate; a plurality of thin film transistors connected to the gate lines and data lines; a plurality of color filters on the thin film transistors; a plurality of pixel electrodes and common electrodes on the plurality of color filters, the plurality of pixel electrodes and common electrodes overlapping with each other with a first insulating layer therebetween; a second substrate having a curved shape, the second substrate facing the first substrate; vertical alignment layers on inner sides of the first substrate and the second substrate; and a liquid crystal layer between the vertical alignment layers, wherein liquid crystal molecules of the liquid crystal layer are aligned to be vertical to surfaces of the first substrate and the second substrate when an electric field is not formed.Type: GrantFiled: September 26, 2014Date of Patent: February 21, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Min Wook Park, Joo Hwan Park, Jeong Man Son, Cheong Hun Lee
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Publication number: 20160149291Abstract: Provided are an antenna and an electronic device including the same. The antenna includes a substrate, an antenna radiator fed from the substrate, at least one metallic member disposed near the antenna radiator, a connector member electrically connected to the substrate, and a capacitor formed by a dielectric interposed between the connector member and the at least one metallic member.Type: ApplicationFiled: November 19, 2015Publication date: May 26, 2016Inventor: Joo-Hwan PARK
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Patent number: 9275591Abstract: A liquid crystal display includes a gate driver including stages, and a clock generator which receives a clock generation control signal, generates a clock signal and a clock bar signal based on one or more of the clock generation control signal, a gate-on voltage and a gate-off voltage, and outputs the clock signal and the clock bar signal to the gate driver. The clock generator includes an overcurrent protector unit which intercepts at least one of the clock signal and the clock bar signal when a voltage level of at least one of the gate-on voltage and the gate-off voltage is greater than a reference level.Type: GrantFiled: February 18, 2014Date of Patent: March 1, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Nam-Suk Bang, Hyun-Sang Cho, Joo-Hwan Park, Jae-Seob Chung
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Patent number: 9257738Abstract: A method and a mobile terminal of improving radiation performance and Specific Absorption Rate (SAR) of an antenna are provided. The mobile terminal includes a controller for generating a control signal for switching a ground according to a frequency band used by an antenna, and a switch unit for switching a contact point for each frequency band according to the control signal.Type: GrantFiled: February 17, 2012Date of Patent: February 9, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Young Kon Lim, Joo Hwan Park
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Publication number: 20150185565Abstract: A curved liquid crystal display including a first substrate having a curved shape; a plurality of gate lines and data lines on the first substrate; a plurality of thin film transistors connected to the gate lines and data lines; a plurality of color filters on the thin film transistors; a plurality of pixel electrodes and common electrodes on the plurality of color filters, the plurality of pixel electrodes and common electrodes overlapping with each other with a first insulating layer therebetween; a second substrate having a curved shape, the second substrate facing the first substrate; vertical alignment layers on inner sides of the first substrate and the second substrate; and a liquid crystal layer between the vertical alignment layers, wherein liquid crystal molecules of the liquid crystal layer are aligned to be vertical to surfaces of the first substrate and the second substrate when an electric field is not formed.Type: ApplicationFiled: September 26, 2014Publication date: July 2, 2015Inventors: Min Wook PARK, Joo Hwan PARK, Jeong Man SON, Cheong Hun LEE
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Publication number: 20150116621Abstract: A curved liquid crystal display panel includes a first substrate, a liquid crystal layer and a second substrate. The first substrate includes a column spacer fixedly anchored to and protruding therefrom. The second substrate includes a stepless preliminary contact area corresponding to a contact-making free end of the column spacer where the preliminary contact area is part of a larger and also non-stepped area. The second substrate is combined with the first substrate to receive the liquid crystal layer therebetween. The non-stepped area is dimensioned to account for shift of the where the contact-making free end of the column spacer makes contact due to the curvature of the first and second substrates.Type: ApplicationFiled: April 9, 2014Publication date: April 30, 2015Applicant: Samsung Display Co., LTD.Inventors: Min-Wook PARK, Joo-Hwan PARK, Jeong-Man SON
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Patent number: 8929960Abstract: A voice call processing method and apparatus for a mobile terminal are provided for improving voice communication quality by switching between matching circuits that are optimized for respective audio output modes of the mobile terminal. The mobile terminal includes at least two matching circuits designated for individual audio output modes, a mode tracking unit for detecting a change from a first audio output mode to a second audio output mode, a control unit for identifying the second audio output mode and the matching circuit designated for the second audio output mode and for outputting a control signal for switching to the matching circuit designated for the second audio output mode, and a switch for switching the signal path between the at least two matching circuits based on the control signal output by the control unit.Type: GrantFiled: August 10, 2010Date of Patent: January 6, 2015Assignee: Samsung Electronics Co., Ltd.Inventor: Joo Hwan Park
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Patent number: 8866799Abstract: A display apparatus includes a display panel, a plurality of gate lines driving circuit parts, a plurality of data lines driving circuit parts and a timing control part. The display panel includes a plurality of gate lines and a plurality of data lines. The gate lines driving circuit parts output gate signals to the gate lines. The data lines driving circuit parts output data signals to the data lines. The timing control part applies a dummy gate signal to at least one dummy gate line, controls a latch sequence of image data and an output sequence of the gate lines driving circuit parts in a reverse sequence, in response to an inverted-mounting mode selection signal for displaying an inverted mount image to the display panel. Because signal lines can be shortened, heat generated by the display apparatus may be decreased and image quality of the display apparatus may be improved.Type: GrantFiled: November 2, 2010Date of Patent: October 21, 2014Assignee: Samsung Display Co., Ltd.Inventors: Bong-Ju Jun, Nam-Gon Choi, Joo-Hwan Park, Yong-Bum Kim, Dong-Hyun Yeo