Patents by Inventor Kwanhee Choi

Kwanhee 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).

  • Patent number: 11957043
    Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer disposed between the first electrode and the second electrode and including an emission layer patterned into a red emission layer and a green emission layer for a corresponding sub-pixel, wherein the red emission layer includes a red dopant having a horizontal dipole moment, and the green emission layer comprises a green dopant having a horizontal dipole moment, and the horizontal dipole moment of the green dopant is greater than the horizontal dipole moment of the red dopant.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinsook Bang, Donghoon Kim, Sanghoon Yim, Jinyoung Choi, Eunjeong Hong, Kwanhee Lee
  • Patent number: 11930658
    Abstract: A display apparatus includes a substrate including a main display area and a component area. The component area includes an auxiliary display area and a transmission area. Main display elements are disposed in the main display area. Auxiliary display elements are disposed in the component area. A thin-film encapsulation layer covers the main display elements and the auxiliary display elements. An optical functional layer is disposed on the thin-film encapsulation layer and includes a polarization layer. The polarization layer includes a first portion disposed in the transmission area and a second portion disposed in the main display area and the auxiliary display area.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: March 12, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youngki Chai, Seonggeun Won, Kwanhee Lee, Youngji Kim, Yiseul Um, Younghoon Lee, Youngseo Choi
  • Patent number: 11359585
    Abstract: An engine system may include: an engine including cylinders that generate a driving torque by combusting fuel; a first intake manifold connected to an intake line through which flows intake air into some of the plurality of cylinders; a second intake manifold supplying the intake air to the other cylinders of the plurality of cylinders through the first intake manifold; a first exhaust manifold connected to some cylinders that are connected to the first intake manifold; a second exhaust manifold connected to some other cylinders that are connected to the second intake manifold; a recirculation line branched from the second exhaust manifold to be coupled to the second intake manifold; a recirculation inlet valve disposed at a point at which the recirculation line and the second exhaust manifold are joined; and a manifold connection valve disposed on an intake line between the first intake manifold and the second intake manifold.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 14, 2022
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Dong Hee Han, Jong Il Park, Hyun Jun Lim, Seungwoo Hong, Joowon Lee, Kwanhee Choi, Heechang Oh, Yeongseop Park, Dong Ho Chu, Hyungbok Lee
  • Publication number: 20210071624
    Abstract: An engine system may include: an engine including cylinders that generate a driving torque by combusting fuel; a first intake manifold connected to an intake line through which flows intake air into some of the plurality of cylinders; a second intake manifold supplying the intake air to the other cylinders of the plurality of cylinders through the first intake manifold; a first exhaust manifold connected to some cylinders that are connected to the first intake manifold; a second exhaust manifold connected to some other cylinders that are connected to the second intake manifold; a recirculation line branched from the second exhaust manifold to be coupled to the second intake manifold; a recirculation inlet valve disposed at a point at which the recirculation line and the second exhaust manifold are joined; and a manifold connection valve disposed on an intake line between the first intake manifold and the second intake manifold.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Hee HAN, Jong Il PARK, Hyun Jun LIM, Seungwoo HONG, Joowon LEE, Kwanhee CHOI, Heechang OH, Yeongseop PARK, Dong HO CHU, Hyungbok LEE
  • Patent number: 10883453
    Abstract: An engine system may include: an engine including cylinders that generate a driving torque by combusting fuel; a first intake manifold connected to an intake line through which flows intake air into some of the plurality of cylinders; a second intake manifold supplying the intake air to the other cylinders of the plurality of cylinders through the first intake manifold; a first exhaust manifold connected to some cylinders that are connected to the first intake manifold; a second exhaust manifold connected to some other cylinders that are connected to the second intake manifold; a recirculation line branched from the second exhaust manifold to be coupled to the second intake manifold; a recirculation inlet valve disposed at a point at which the recirculation line and the second exhaust manifold are joined; and a manifold connection valve disposed on an intake line between the first intake manifold and the second intake manifold.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 5, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Hee Han, Jong Il Park, Hyun Jun Lim, Seungwoo Hong, Joowon Lee, Kwanhee Choi, Heechang Oh, Yeongseop Park, Dong Ho Chu, Hyungbok Lee
  • Patent number: 10458300
    Abstract: An engine system may include an intake line, and a cylinder deactivation (CDA) device selectively deactivating a portion of combustion chambers in the engine. The engine system may further include a first exhaust manifold connected to a first plurality of combustion chambers mounted with the CDA device, a second exhaust manifold connected to a second plurality of combustion chambers without the CDA device, a first exhaust line connected to the first exhaust manifold, a second exhaust line connected to the second exhaust manifold, and a third exhaust line connected with the first and second exhaust lines through an exhaust gas processing device. In addition, a turbocharger including a turbine is mounted at the first exhaust line and rotated by exhaust gas. An air injection device may supply air to the second exhaust manifold or the second exhaust line in a catalyst heating mode of the exhaust gas processing device.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 29, 2019
    Assignee: Hyundai Motor Company
    Inventors: Hyungbok Lee, Jong Il Park, Kwanhee Choi, Joowon Lee, Dong Hee Han, Hyun Jun Lim
  • Publication number: 20190128219
    Abstract: An engine system may include: an engine including cylinders that generate a driving torque by combusting fuel; a first intake manifold connected to an intake line through which flows intake air into some of the plurality of cylinders; a second intake manifold supplying the intake air to the other cylinders of the plurality of cylinders through the first intake manifold; a first exhaust manifold connected to some cylinders that are connected to the first intake manifold; a second exhaust manifold connected to some other cylinders that are connected to the second intake manifold; a recirculation line branched from the second exhaust manifold to be coupled to the second intake manifold; a recirculation inlet valve disposed at a point at which the recirculation line and the second exhaust manifold are joined; and a manifold connection valve disposed on an intake line between the first intake manifold and the second intake manifold.
    Type: Application
    Filed: December 5, 2017
    Publication date: May 2, 2019
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Hee Han, Jong Il Park, Hyun Jun Lim, Seungwoo Hong, Joowon Lee, Kwanhee Choi, Heechang Oh, Yeongseop Park, Dong.Ho Chu, Hyungbok Lee
  • Patent number: 10273908
    Abstract: An engine system may include an engine having an intake line flowing an intake gas supplied to the combustion chambers; an intake manifold; a throttle valve provided at a front of the intake manifold and controlling an air amount supplied to the combustion chamber; an electric supercharger provided at the throttle valve and including a motor and an electric compressor operated by the motor to supply the supercharged air to the combustion chamber; an exhaust gas processing device purifying an exhaust gas generated in the combustion chamber; and an exhaust gas recirculation device including a recirculation line branched from the downstream portion of the exhaust gas processing device and joined to the intake line of the upstream portion of the electric compressor, an EGR cooler mounted at the recirculation line, and an EGR valve mounted at a part where the recirculation line and the intake line are joined.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: April 30, 2019
    Assignee: Hyundai Motor Company
    Inventors: Joowon Lee, Jong Il Park, Kwanhee Choi, Hyungbok Lee, Dong Hee Han, Hyun Jun Lim
  • Publication number: 20180058289
    Abstract: An engine system may include an engine, an intake line, a cylinder deactivation (CDA) device mounted at a portion of combustion chambers, a first exhaust manifold connected to combustion chambers mounted with the CDA device, a second exhaust manifold connected to combustion chambers without the CDA device, a first exhaust line flowing exhaust gas exhausted from the first exhaust manifold, a second exhaust line flowing exhaust gas exhausted from the second exhaust manifold, a main exhaust line to which the first exhaust line and the second exhaust line are joined, an exhaust gas processing device at which the main exhaust line is installed, a turbocharger mounted at the first exhaust line, an electric supercharger installed at the intake line to supply supercharged air to the combustion chamber and an electric compressor, and an air injection device supplying the fresh air to the second exhaust manifold or the second exhaust line.
    Type: Application
    Filed: November 22, 2016
    Publication date: March 1, 2018
    Applicant: Hyundai Motor Company
    Inventors: Hyungbok LEE, Jong Il PARK, Kwanhee CHOI, Joowon LEE, Dong Hee HAN, Hyun Jun LIM
  • Patent number: 9903317
    Abstract: A control apparatus of an engine having a turbocharger may include the engine generating power by combustion of a fuel, the turbocharger including a turbine operated by exhaust gas of the engine and a compressor connected to the turbine by a rotating shaft, and thus supercharging air to a combustion chamber provided in the engine by the compressor, a detecting sensor detecting pre-ignition in the combustion chamber of the engine, and a controller controlling supercharging pressure supplied to the combustion chamber by using a required torque, ignition timing of the combustion chamber, and an air-fuel ratio, and thus controlling the pre-ignition in the combustion chamber, when the pre-ignition in the combustion chamber may be detected by the detecting sensor.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Dong Hee Han, Kwanhee Choi, Hyun Jun Lim, Nahm Roh Joo, Yoon Joo Kim, Kiwon Park, Joowon Lee, Jong Il Park
  • Patent number: 9890749
    Abstract: A method for controlling an exhaust gas recirculation (EGR) system which is provided with an intake throttle valve and an EGR valve driven by a motor may include detecting an engine speed and an amount of intake air for each cylinder of an engine while the engine is operating, determining an amount of air flow supplied to the engine based on the engine speed and the amount of intake air for each cylinder, determining an equivalent cross-section of the EGR valve based on the amount of air flow, determining an opening angle of the EGR valve based on the engine speed, the amount of intake air for each cylinder, the amount of air flow, and the equivalent cross-section of the EGR valve, and controlling the EGR valve according to the opening angle of the EGR valve.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: February 13, 2018
    Assignee: Hyundai Motor Company
    Inventors: Dong Hee Han, Yoon Joo Kim, Kwanhee Choi, Hyun Jun Lim, Joowon Lee, Nahm Roh Joo, Jong Il Park
  • Publication number: 20180030934
    Abstract: An engine system may include an engine having an intake line flowing an intake gas supplied to the combustion chambers; an intake manifold; a throttle valve provided at a front of the intake manifold and controlling an air amount supplied to the combustion chamber; an electric supercharger provided at the throttle valve and including a motor and an electric compressor operated by the motor to supply the supercharged air to the combustion chamber; an exhaust gas processing device purifying an exhaust gas generated in the combustion chamber; and an exhaust gas recirculation device including a recirculation line branched from the downstream portion of the exhaust gas processing device and joined to the intake line of the upstream portion of the electric compressor, an EGR cooler mounted at the recirculation line, and an EGR valve mounted at a part where the recirculation line and the intake line are joined.
    Type: Application
    Filed: December 13, 2016
    Publication date: February 1, 2018
    Applicant: Hyundai Motor Company
    Inventors: Joowon LEE, Jong II PARK, Kwanhee CHOI, Hyungbok LEE, Dong Hee HAN, Hyun Jun LIM
  • Publication number: 20170350325
    Abstract: An apparatus for controlling an engine having a variable valve actuator include: an engine including a plurality of cylinders generating a driving torque by burning fuel, an intake valve selectively opened for supplying air and the fuel to the cylinders through an intake manifold, and an exhaust valve selectively opened for exhausting exhaust gas generated from the cylinders to an exhaust manifold; a variable valve actuator disposed in at least one cylinder of the plurality of cylinders and adjusting lift and duration of the intake valve or the exhaust valve; and a controller deactivating the at least one cylinder of the plurality of cylinders through the variable valve actuator according to a driving region of the engine, and recirculating the exhaust gas exhausted from the cylinders into the intake manifold through the deactivated cylinder.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 7, 2017
    Inventors: Dong Hee HAN, Jong Il PARK, Kwanhee CHOI, Hyungbok LEE, Joowon LEE, Dong Ho CHU, Hyun Jun LIM
  • Patent number: 9726090
    Abstract: An engine having a low pressure EGR system includes: an intake line suctioning outdoor air and transferring the outdoor air to a combustion chamber; a turbocharger actuated by exhaust gas which flows in an exhaust line to compress gas which flows in the intake line; a supercharger installed at a downstream side of the turbocharger; a low pressure EGR line branched at one side of the exhaust line and joined to an upstream side of the turbocharger to recirculate the exhaust gas; a recirculation line branched on the intake line at a downstream side of the supercharger and joined to the intake line at an upstream side of a point where the low EGR line and the intake line meet; and a control unit controlling the actuation of the supercharger. The control unit actuates the supercharger in the case of a coasting driving condition.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: August 8, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Seung Hwan Kim, Jong II Park, Kwanhee Choi, Hyun Jun Lim, Joowon Lee, Dong Hee Han
  • Patent number: 9599044
    Abstract: An control apparatus and method for an engine having a turbocharger may include determining a load condition of the engine by a controller, and opening and closing an intake valve, a throttle valve, and a wastegate valve by the controller according to the load condition of the engine, where a combustion chamber generates power by combusting a fuel, an intake valve adjusts an air/fuel mixed gas flowed into the combustion chamber, a continuously variable valve timing apparatus advances or retards an opening/closing timing of the intake valve, a turbocharger having a turbine and a compressor compressing air flowed into the combustion chamber, a throttle valve adjusting air supplied to the combustion chamber, a wastegate valve adjusting the exhaust gas flowed into the turbine, and a controller controlling the intake valve, the throttle valve, and the wastegate valve according to a load region of the engine.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: March 21, 2017
    Assignee: Hyundai Motor Company
    Inventors: Dong Hee Han, Joowon Lee, Hyun Jun Lim, Nahm Roh Joo, Yoon Joo Kim, Kiwon Park, Kwanhee Choi, Jong Il Park
  • Publication number: 20160326972
    Abstract: An engine having a low pressure EGR system includes: an intake line suctioning outdoor air and transferring the outdoor air to a combustion chamber; a turbocharger actuated by exhaust gas which flows in an exhaust line to compress gas which flows in the intake line; a supercharger installed at a downstream side of the turbocharger; a low pressure EGR line branched at one side of the exhaust line and joined to an upstream side of the turbocharger to recirculate the exhaust gas; a recirculation line branched on the intake line at a downstream side of the supercharger and joined to the intake line at an upstream side of a point where the low EGR line and the intake line meet; and a control unit controlling the actuation of the supercharger. The control unit actuates the supercharger in the case of a coasting driving condition.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 10, 2016
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Seung Hwan KIM, Jong II PARK, Kwanhee CHOI, Hyun Jun LIM, Joowon LEE, Dong Hee HAN
  • Publication number: 20160153378
    Abstract: A method for controlling an exhaust gas recirculation (EGR) system which is provided with an intake throttle valve and an EGR valve driven by a motor may include detecting an engine speed and an amount of intake air for each cylinder of an engine while the engine is operating, determining an amount of air flow supplied to the engine based on the engine speed and the amount of intake air for each cylinder, determining an equivalent cross-section of the EGR valve based on the amount of air flow, determining an opening angle of the EGR valve based on the engine speed, the amount of intake air for each cylinder, the amount of air flow, and the equivalent cross-section of the EGR valve, and controlling the EGR valve according to the opening angle of the EGR valve.
    Type: Application
    Filed: October 8, 2015
    Publication date: June 2, 2016
    Applicant: Hyundai Motor Company
    Inventors: Dong Hee HAN, Yoon Joo KIM, Kwanhee CHOI, Hyun Jun LIM, Joowon LEE, Nahm Roh JOO, Jong Il PARK
  • Publication number: 20160153337
    Abstract: An engine system having a turbocharger may include a main exhaust line branched from one side of an exhaust manifold and exhausting an exhaust gas from a combustion chamber, a supplementary exhaust line branched from another side of the exhaust manifold and exhausting the exhaust gas from the combustion chamber, a first catalyst device disposed in the main exhaust line and reducing toxic material included in the exhaust gas, a turbine of a turbocharger disposed in the supplementary exhaust line and operated by flow energy of the exhaust gas, a second catalyst device disposed in a downstream side of the turbine and reducing toxic material included in the exhaust gas; and an exhaust route control valve disposed in the main exhaust line and controlling a route of the exhaust gas.
    Type: Application
    Filed: June 30, 2015
    Publication date: June 2, 2016
    Applicant: Hyundai Motor Company
    Inventors: Jong Il PARK, Dong Hee HAN, Yoon Joo KIM, Kwanhee CHOI, Hyun Jun LIM, Joowon LEE, Nahm Roh JOO
  • Publication number: 20150184603
    Abstract: An control apparatus and method for an engine having a turbocharger may include determining a load condition of the engine by a controller, and opening and closing an intake valve, a throttle valve, and a wastegate valve by the controller according to the load condition of the engine, where a combustion chamber generates power by combusting a fuel, an intake valve adjusts an air/fuel mixed gas flowed into the combustion chamber, a continuously variable valve timing apparatus advances or retards an opening/closing timing of the intake valve, a turbocharger having a turbine and a compressor compressing air flowed into the combustion chamber, a throttle valve adjusting air supplied to the combustion chamber, a wastegate valve adjusting the exhaust gas flowed into the turbine, and a controller controlling the intake valve, the throttle valve, and the wastegate valve according to a load region of the engine.
    Type: Application
    Filed: September 12, 2014
    Publication date: July 2, 2015
    Applicant: Hyundai Motor Company
    Inventors: Dong Hee Han, Joowon Lee, Hyun Jun Lim, Nahm Roh Joo, Yoon Joo Kim, Kiwon Park, Kwanhee Choi, Jong Il Park
  • Publication number: 20150176535
    Abstract: A control apparatus of an engine having a turbocharger may include the engine generating power by combustion of a fuel, the turbocharger including a turbine operated by exhaust gas of the engine and a compressor connected to the turbine by a rotating shaft, and thus supercharging air to a combustion chamber provided in the engine by the compressor, a detecting sensor detecting pre-ignition in the combustion chamber of the engine, and a controller controlling supercharging pressure supplied to the combustion chamber by using a required torque, ignition timing of the combustion chamber, and an air-fuel ratio, and thus controlling the pre-ignition in the combustion chamber, when the pre-ignition in the combustion chamber may be detected by the detecting sensor.
    Type: Application
    Filed: July 23, 2014
    Publication date: June 25, 2015
    Applicant: Hyundai Motor Company
    Inventors: Dong Hee Han, Kwanhee Choi, Hyun Jun Lim, Nahm Roh Joo, Yoon Joo Kim, Kiwon Park, Joowon Lee, Jong Il Park