Patents by Inventor Seung Jin Yoo
Seung Jin Yoo 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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Patent number: 11942427Abstract: A semiconductor device includes a first interlayer insulating film disposed on a substrate and having a first trench. A first lower conductive pattern fills the first trench and includes first and second valley areas that are spaced apart from each other in a first direction parallel to an upper surface of the substrate. The first and second valley areas are recessed toward the substrate. A second interlayer insulating film is disposed on the first interlayer insulating film and includes a second trench that exposes at least a portion of the first lower conductive pattern. An upper conductive pattern fills the second trench and includes an upper barrier film and an upper filling film disposed on the upper barrier film. The upper conductive pattern at least partially fills the first valley area.Type: GrantFiled: September 19, 2022Date of Patent: March 26, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung Yong Yoo, Jong Jin Lee, Rak Hwan Kim, Eun-Ji Jung, Won Hyuk Hong
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Patent number: 11893945Abstract: The display device includes a first data line group including data lines connected to pixels arranged at a first resolution; a second data line group including data lines connected to pixels arranged at the first resolution and pixels arranged at a second resolution; a first gamma compensation voltage generation unit that divides a first reference voltage and outputs a gamma compensation voltage; a second gamma compensation voltage generation unit that divides a second reference voltage and outputs gamma compensation voltages; a first data drive unit that converts pixel data into the gamma compensation voltage output from the first gamma compensation voltage generation unit and outputs a data voltage to the first data line group; and a second data drive unit that converts pixel data into the gamma compensation voltage output from the second gamma compensation voltage generation unit and outputs a data voltage to the second data line group.Type: GrantFiled: November 17, 2022Date of Patent: February 6, 2024Assignee: LG Display Co., Ltd.Inventors: Seung Jin Yoo, Hyun Gi Hong
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Patent number: 11862057Abstract: A display device comprises: pixels connected to a power line to which a pixel driving voltage is supplied; data lines that extend in a first direction and are connected to the pixels, the data lines applying data voltages of an image to the pixels; gate lines that are connected to the pixels and extend in a second direction, the gate lines applying gate signals to the pixels; a data driver configured to supply the data voltages to the data lines during a display mode, and to supply sensing data to the data lines during a sensing mode; a gate driver configured to supply the gate signals to the gate lines; and a sensing circuit configured to sense current flowing through the power line that is connected to a subset of pixels from the pixels during the sensing mode, the subset of pixels arranged along the first direction.Type: GrantFiled: October 6, 2022Date of Patent: January 2, 2024Assignee: LG Display Co., Ltd.Inventors: Jin Woo Jung, Seung Jin Yoo, Hyun Gi Hong
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Publication number: 20230215306Abstract: A display device comprises: pixels connected to a power line to which a pixel driving voltage is supplied; data lines that extend in a first direction and are connected to the pixels, the data lines applying data voltages of an image to the pixels; gate lines that are connected to the pixels and extend in a second direction, the gate lines applying gate signals to the pixels; a data driver configured to supply the data voltages to the data lines during a display mode, and to supply sensing data to the data lines during a sensing mode; a gate driver configured to supply the gate signals to the gate lines; and a sensing circuit configured to sense current flowing through the power line that is connected to a subset of pixels from the pixels during the sensing mode, the subset of pixels arranged along the first direction.Type: ApplicationFiled: October 6, 2022Publication date: July 6, 2023Inventors: Jin Woo Jung, Seung Jin Yoo, Hyun Gi Hong
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Publication number: 20230079387Abstract: The display device includes a first data line group including data lines connected to pixels arranged at a first resolution; a second data line group including data lines connected to pixels arranged at the first resolution and pixels arranged at a second resolution; a first gamma compensation voltage generation unit that divides a first reference voltage and outputs a gamma compensation voltage; a second gamma compensation voltage generation unit that divides a second reference voltage and outputs gamma compensation voltages; a first data drive unit that converts pixel data into the gamma compensation voltage output from the first gamma compensation voltage generation unit and outputs a data voltage to the first data line group; and a second data drive unit that converts pixel data into the gamma compensation voltage output from the second gamma compensation voltage generation unit and outputs a data voltage to the second data line group.Type: ApplicationFiled: November 17, 2022Publication date: March 16, 2023Inventors: Seung Jin Yoo, Hyun Gi Hong
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Patent number: 11574602Abstract: The display device includes a first data line group including data lines connected to pixels arranged at a first resolution; a second data line group including data lines connected to pixels arranged at the first resolution and pixels arranged at a second resolution; a first gamma compensation voltage generation unit that divides a first reference voltage and outputs a gamma compensation voltage; a second gamma compensation voltage generation unit that divides a second reference voltage and outputs gamma compensation voltages; a first data drive unit that converts pixel data into the gamma compensation voltage output from the first gamma compensation voltage generation unit and outputs a data voltage to the first data line group; and a second data drive unit that converts pixel data into the gamma compensation voltage output from the second gamma compensation voltage generation unit and outputs a data voltage to the second data line group.Type: GrantFiled: July 9, 2021Date of Patent: February 7, 2023Assignee: LG Display Co., Ltd.Inventors: Seung Jin Yoo, Hyun Gi Hong
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Publication number: 20230033778Abstract: A pixel circuit and a display panel including the same are disclosed according to embodiments. The pixel circuit according to embodiments includes a first pixel circuit including a first EM transistor to which a pulse of a first EM signal is applied, and a first driving transistor for driving a first light emitting element; and a second pixel circuit including a second EM transistor to which a pulse of a second EM signal is applied, and a second driving transistor for driving a second light emitting element. A node between the first EM transistor and the first driving transistor and a node between the second EM transistor and the second driving transistor are connected.Type: ApplicationFiled: July 20, 2022Publication date: February 2, 2023Inventors: Jin Woo Jung, Sang Jin Nam, Hyun Suk Lee, Seung Jin Yoo
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Publication number: 20220068219Abstract: The display device includes a first data line group including data lines connected to pixels arranged at a first resolution; a second data line group including data lines connected to pixels arranged at the first resolution and pixels arranged at a second resolution; a first gamma compensation voltage generation unit that divides a first reference voltage and outputs a gamma compensation voltage; a second gamma compensation voltage generation unit that divides a second reference voltage and outputs gamma compensation voltages; a first data drive unit that converts pixel data into the gamma compensation voltage output from the first gamma compensation voltage generation unit and outputs a data voltage to the first data line group; and a second data drive unit that converts pixel data into the gamma compensation voltage output from the second gamma compensation voltage generation unit and outputs a data voltage to the second data line group.Type: ApplicationFiled: July 9, 2021Publication date: March 3, 2022Inventors: Seung Jin Yoo, Hyun Gi Hong
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Patent number: 11195474Abstract: A display device and a driving method thereof are discussed. This display device receives first and second input reference voltages, generates gamma reference voltages having different voltage levels, receives each of the gamma reference voltages, and generates a data voltage of pixel data. The first and second input reference voltages and the reference voltage are changed according to a variation of the pixel driving voltage.Type: GrantFiled: June 16, 2020Date of Patent: December 7, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Seung Jin Yoo, Sang Jin Nam, Hyun Suk Lee
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Publication number: 20210043149Abstract: A display device and a driving method thereof are discussed. This display device receives first and second input reference voltages, generates gamma reference voltages having different voltage levels, receives each of the gamma reference voltages, and generates a data voltage of pixel data. The first and second input reference voltages and the reference voltage are changed according to a variation of the pixel driving voltage.Type: ApplicationFiled: June 16, 2020Publication date: February 11, 2021Applicant: LG DISPLAY CO., LTD.Inventors: Seung Jin YOO, Sang Jin NAM, Hyun Suk LEE
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Patent number: 10239535Abstract: The present disclosure relates to an engine control device for hybrid construction machinery, and more particularly, and an object of the present disclosure is to, in a hybrid excavator, in which a swing apparatus is electrically driven by being separated from a hydraulic power train system in the related art, satisfy a minimum rotational speed of an engine auxiliary motor which is necessary to satisfy a target charging amount required for an energy storage device, and improve fuel efficiency by removing unnecessary energy loss at low loads by controlling a rotational speed of an engine to be lower than a rotational speed of an engine determined based on a dial input and a mode input in the related art, in a case where a target power generation amount of the engine auxiliary motor is small in a low-load work situation.Type: GrantFiled: December 24, 2013Date of Patent: March 26, 2019Assignee: Doosan Infracore Co., Ltd.Inventor: Seung Jin Yoo
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Patent number: 9725881Abstract: The present disclosure relates to a charging system for an energy storage device of hybrid construction machinery, and more particularly, to a charging system for an energy storage device of hybrid construction machinery which is capable of computing an amount of regenerable energy predicted according to an operational situation of an actuator, calculating a target charging rate of the energy storage device by reflecting the computed amount of the regenerable energy, and finally, computing an amount of power generated by an engine auxiliary motor in order to compensate for a difference between a target voltage and an actual voltage of the energy storage device, in the case of charging the energy storage device of the electric hybrid construction machinery.Type: GrantFiled: December 24, 2013Date of Patent: August 8, 2017Assignee: Doosan Infracore Co., Ltd.Inventor: Seung Jin Yoo
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Patent number: 9627627Abstract: A phosphine oxide-based compound represented by Formula 1, and an organic light-emitting device including the phosphine oxide-based compound. wherein Ar1 through Ar3, and a, b, and c are defined as in the specification.Type: GrantFiled: August 30, 2013Date of Patent: April 18, 2017Assignees: Samsung Display Co., Ltd., INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITYInventors: Mi-Kyung Kim, Kwan-Hee Lee, Chang-Woong Chu, Yun-Hi Kim, Soon-Ki Kwon, Seung-Jin Yoo
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Patent number: 9493927Abstract: Exemplary embodiments relate to controlling a swing body of construction equipment. Disclosed methods may include selecting a representative signal vs. speed curve, receiving an operating signal value from the operating input device, obtaining a reference speed value by applying said operating signal value to the selected curve, transmitting a command for rotational speed equivalent to said reference speed to the swing motor making the swing body rotate, obtaining rotational speed of said motor, determining whether a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new signal vs. speed curve equivalent to rotational speed when a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new reference speed value from an operating signal value using said new curve, and transmitting a new command for rotational speed equivalent to said new reference speed to said motor.Type: GrantFiled: February 24, 2015Date of Patent: November 15, 2016Assignee: Doosan Infracore Co., Ltd.Inventors: Cheol Gyu Park, Seung Jin Yoo, Sung Woo Cho
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Publication number: 20150368877Abstract: The present disclosure relates to a charging system for an energy storage device of hybrid construction machinery, and more particularly, to a charging system for an energy storage device of hybrid construction machinery which is capable of computing an amount of regenerable energy predicted according to an operational situation of an actuator, calculating a target charging rate of the energy storage device by reflecting the computed amount of the regenerable energy, and finally, computing an amount of power generated by an engine auxiliary motor in order to compensate for a difference between a target voltage and an actual voltage of the energy storage device, in the case of charging the energy storage device of the electric hybrid construction machinery.Type: ApplicationFiled: December 24, 2013Publication date: December 24, 2015Inventor: Seung Jin YOO
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Publication number: 20150336582Abstract: The present disclosure relates to an engine control device for hybrid construction machinery, and more particularly, and an object of the present disclosure is to, in a hybrid excavator, in which a swing apparatus is electrically driven by being separated from a hydraulic power train system in the related art, satisfy a minimum rotational speed of an engine auxiliary motor which is necessary to satisfy a target charging amount required for an energy storage device, and improve fuel efficiency by removing unnecessary energy loss at low loads by controlling a rotational speed of an engine to be lower than a rotational speed of an engine determined based on a dial input and a mode input in the related art, in a case where a target power generation amount of the engine auxiliary motor is small in a low-load work situation.Type: ApplicationFiled: December 24, 2013Publication date: November 26, 2015Inventor: Seung Jin YOO
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Publication number: 20150240449Abstract: Exemplary embodiments relate to controlling a swing body of construction equipment. Disclosed methods may include selecting a representative signal vs. speed curve, receiving an operating signal value from the operating input device, obtaining a reference speed value by applying said operating signal value to the selected curve, transmitting a command for rotational speed equivalent to said reference speed to the swing motor making the swing body rotate, obtaining rotational speed of said motor, determining whether a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new signal vs. speed curve equivalent to rotational speed when a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new reference speed value from an operating signal value using said new curve, and transmitting a new command for rotational speed equivalent to said new reference speed to said motor.Type: ApplicationFiled: February 24, 2015Publication date: August 27, 2015Inventors: Cheol Gyu Park, Seung Jin Yoo, Sung Woo Cho
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Publication number: 20140077190Abstract: A phosphine oxide-based compound represented by Formula 1, and an organic light-emitting device including the phosphine oxide-based compound. wherein Ar1 through Ar3, and a, b, and c are defined as in the specification.Type: ApplicationFiled: August 30, 2013Publication date: March 20, 2014Inventors: Mi-Kyung Kim, Kwan-Hee Lee, Chang-Woong Chu, Yun-Hi Kim, Soon-Ki Kwon, Seung-Jin Yoo
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Patent number: 7268372Abstract: Disclosed are a vertical GaN light emitting diode and a method for manufacturing the same. The vertical GaN light emitting diode comprises a first conductive GaN clad layer with an upper surface provided with a first contact formed thereon, an active layer formed on a lower surface of the first conductive GaN clad layer, a second conductive GaN clad layer formed on a lower surface of the active layer, a conductive adhesive layer formed on the second conductive GaN clad layer, and a conductive substrate, with a lower surface provided with a second contact formed thereon, formed on a lower surface of the conductive adhesive layer. The method for manufacturing the vertical GaN light emitting diodes comprises the step of removing the sapphire substrate from the light emitting structure so as to prevent the damages on a GaN single crystal plane of the structure.Type: GrantFiled: June 24, 2003Date of Patent: September 11, 2007Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Young Ho Park, Hun Joo Hahm, J ong Seok Na, Seung Jin Yoo
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Patent number: D556776Type: GrantFiled: October 10, 2006Date of Patent: December 4, 2007Assignee: Yukyung Technologies CorporationInventor: Seung Jin Yoo