Patents by Inventor Byoung Woo Ryu

Byoung Woo Ryu 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: 11121071
    Abstract: A semiconductor device structure, for example a 3D structure, and a method for fabricating a semiconductor device. As non-limiting examples, various aspects of this disclosure provide various semiconductor package structures, and methods for manufacturing thereof, that comprise interposer, interlayer, and/or heat dissipater configurations that provide for low cost, increased manufacturability, and high reliability.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 14, 2021
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Keun Soo Kim, Jae Yun Kim, Byoung Jun Ahn, Dong Soo Ryu, Dae Byoung Kang, Chel Woo Park
  • Patent number: 10965169
    Abstract: A wireless power transmitter includes: a power supply configured to supply a driving power; a first power transmitter including first bridge switching elements forming a first bridge circuit, and configured to receive the driving power to transmit a first power, wherein a magnitude of a first input voltage applied to the first bridge circuit is determined by a duty of at least one of the first bridge switching elements; a second power transmitter including second bridge switching elements forming a second bridge circuit, and configured to receive the driving power to transmit a second power, wherein a magnitude of a second input voltage applied to the second bridge circuit is determined by a duty of at least one of the second bridge switching elements; and a controller configured to output first and second power transmitting control signals respectively controlling the first bridge switching elements and the second bridge switching elements.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 30, 2021
    Assignee: WITS Co., Ltd.
    Inventors: Seung Won Park, Eun Young Shin, Byoung Woo Ryu, Hyo Young Kim, Yun Ki Hong, Young Seung Roh
  • Patent number: 10892647
    Abstract: A wireless power transmitter having a data transmission and reception capability is disclosed. The wireless power transmitter includes a main coil to transmit power, an inverter to apply an alternating current (AC) signal to the main coil, a communication module to output a transmission signal including transmission data to be wirelessly transmitted the wireless power transmitter, and/or receive a reception signal including received data wirelessly received by the wireless power transmitter, a first connecting circuitry to prevent a power signal of the main coil from being input to the communication module, and the auxiliary coil to connect to the main coil and connected to the first connecting circuitry. The main coil or the auxiliary coil may be configured to transmit the transmission data and receive the reception signal, and the auxiliary coil may be wiredly connected to the main coil or not wiredly connected to the main coil.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: January 12, 2021
    Assignee: WITS Co., Ltd.
    Inventors: Se Joo Kim, Jung Woo Choi, Tae Seok Ko, Byoung Woo Ryu
  • Patent number: 10873216
    Abstract: A wireless power transmitter includes: a first power transmitting unit including first switching elements forming a first bridge circuit, and configured to receive input DC voltage and transmit a first power by switching operations of the first switching elements; and a second power transmitting unit including second switching elements forming a second bridge circuit, and configured to receive the input DC voltage and transmit second power by switching operations of the second switching elements. The first power transmitting unit steps-up the input DC voltage according to a duty ratio of one or more of the first switching elements, and applies the stepped-up input DC voltage to the first bridge circuit. The second power transmitting unit steps-up or steps-down the input DC voltage according to a duty ratio of one or more of the second switching elements, and applies the stepped-up or stepped-down input DC voltage to the second bridge circuit.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 22, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Eun Young Shin, Hyo Young Kim, Seung Won Park, Byoung Woo Ryu, Young Seung Roh
  • Patent number: 10855116
    Abstract: A power transmitter includes: a first resonator configured to wirelessly supply power to a power receiver and having an impedance that changes in response to a foreign material being proximate to the power transmitter; a second resonator having an impedance that changes in response to the foreign material being proximate to the power receiver; and controller configured to select either one of the first resonator and the second resonator in response to a wireless charging control, and to determine whether the foreign material is proximate to the power transmitter, based on a change in the impedance of the selected one of the first resonator and the second resonator.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: December 1, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Soon Tack Oh, Byoung Woo Ryu, Ji Hoon Kim, Young Seung Roh
  • Patent number: 10749381
    Abstract: A wireless power transmission device including a resonant circuit magnetically coupled to a wireless power reception device and being configured to wirelessly transmit power, an alternating current (AC) generator including switches and being configured to receive a direct current (DC) voltage and to generate an AC current, according to a switching operation of the switches, to be supplied to the resonant circuit, and a variable capacitor connected to an output terminal of the AC generator and having a first capacitance, when a load state of the wireless power reception device is provided as a full load state and a second capacitance lower than the first capacitance, when the load state is provided as a light load state.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 18, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Dong Woo Han, Byoung Woo Ryu, Hyo Young Kim, Se Joo Kim, Young Seung Roh
  • Publication number: 20190355509
    Abstract: An electronic device includes a power module that transmits or receives power wirelessly and includes a coil portion that generates a magnetic field; and a heat radiating sheet disposed on one side of the power module. The heat radiating sheet includes line-type conductors arranged to overlap the coil portion and an area-type conductor disposed along a periphery of the line-type conductors.
    Type: Application
    Filed: October 15, 2018
    Publication date: November 21, 2019
    Applicant: WITS Co., Ltd.
    Inventors: Soon Joung YIO, Hee Seung KIM, Jae Hyuk JANG, Young Seung ROH, Byoung Woo RYU, Young Ho KIM, Jae Sun WON
  • Patent number: 10418857
    Abstract: A wireless power transmitter includes: a converter including switching elements forming a bridge circuit and configured to output an alternating current (AC) voltage in response to control signals; a resonator including a resonant capacitor and a resonant coil, and configured to receive the AC voltage to transmit power wirelessly; and a controller configured to set a dead time at which a magnitude of the AC voltage is substantially zero in response to a signal received from a wireless power receiver.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: September 17, 2019
    Assignee: WITS Co., Ltd.
    Inventors: Hyo Young Kim, Seung Won Park, Eun Young Shin, Byoung Woo Ryu, Dong Woo Han, Ye Ji Park, Young Seung Roh
  • Publication number: 20190173316
    Abstract: A wireless power transmitter includes: a first power transmitting unit including first switching elements forming a first bridge circuit, and configured to receive input DC voltage and transmit a first power by switching operations of the first switching elements; and a second power transmitting unit including second switching elements forming a second bridge circuit, and configured to receive the input DC voltage and transmit second power by switching operations of the second switching elements. The first power transmitting unit steps-up the input DC voltage according to a duty ratio of one or more of the first switching elements, and applies the stepped-up input DC voltage to the first bridge circuit. The second power transmitting unit steps-up or steps-down the input DC voltage according to a duty ratio of one or more of the second switching elements, and applies the stepped-up or stepped-down input DC voltage to the second bridge circuit.
    Type: Application
    Filed: June 28, 2018
    Publication date: June 6, 2019
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Eun Young SHIN, Hyo Young KIM, Seung Won PARK, Byoung Woo RYU, Young Seung ROH
  • Publication number: 20190148980
    Abstract: A wireless power transmitter having a data transmission and reception capability is disclosed. The wireless power transmitter includes a main coil to transmit power, an inverter to apply an alternating current (AC) signal to the main coil, a communication module to output a transmission signal including transmission data to be wirelessly transmitted the wireless power transmitter, and/or receive a reception signal including received data wirelessly received by the wireless power transmitter, a first connecting circuitry to prevent a power signal of the main coil from being input to the communication module, and the auxiliary coil to connect to the main coil and connected to the first connecting circuitry. The main coil or the auxiliary coil may be configured to transmit the transmission data and receive the reception signal, and the auxiliary coil may be wiredly connected to the main coil or not wiredly connected to the main coil.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 16, 2019
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Se Joo KIM, Jung Woo CHOI, Tae Seok KO, Byoung Woo RYU
  • Publication number: 20190148966
    Abstract: A wireless power transmitter includes: a near field communications (NFC) controller configured to communicate with a wireless power receiver in an NFC method using an NFC coil; and a wireless charging controller configured to wirelessly supply power to the wireless power receiver using a power transmitting coil, and to determine whether a cross connection has occurred for the wireless power receiver by comparing first identification information transmitted to the wireless power receiver in the NFC method with second identification information received from the wireless power receiver in a communications method different from the NFC method.
    Type: Application
    Filed: June 26, 2018
    Publication date: May 16, 2019
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Woo CHOI, Tae Seok KO, Byoung Woo RYU
  • Publication number: 20190140484
    Abstract: A wireless power transmitter includes: a power supply configured to supply a driving power; a first power transmitter including first bridge switching elements forming a first bridge circuit, and configured to receive the driving power to transmit a first power, wherein a magnitude of a first input voltage applied to the first bridge circuit is determined by a duty of at least one of the first bridge switching elements; a second power transmitter including second bridge switching elements forming a second bridge circuit, and configured to receive the driving power to transmit a second power, wherein a magnitude of a second input voltage applied to the second bridge circuit is determined by a duty of at least one of the second bridge switching elements; and a controller configured to output first and second power transmitting control signals respectively controlling the first bridge switching elements and the second bridge switching elements.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 9, 2019
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seung Won PARK, Eun Young SHIN, Byoung Woo RYU, Hyo Young KIM, Yun Ki HONG, Young Seung ROH
  • Publication number: 20180294675
    Abstract: A wireless power transmission device including a resonant circuit magnetically coupled to a wireless power reception device and being configured to wirelessly transmit power, an alternating current (AC) generator including switches and being configured to receive a direct current (DC) voltage and to generate an AC current, according to a switching operation of the switches, to be supplied to the resonant circuit, and a variable capacitor connected to an output terminal of the AC generator and having a first capacitance, when a load state of the wireless power reception device is provided as a full load state and a second capacitance lower than the first capacitance, when the load state is provided as a light load state.
    Type: Application
    Filed: November 2, 2017
    Publication date: October 11, 2018
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Dong Woo HAN, Byoung Woo RYU, Hyo Young KIM, Se Joo KIM, Young Seung ROH
  • Publication number: 20180205269
    Abstract: A wireless power transmission device includes a power amplifier, a detection device, and a control unit. The power amplifier is configured to receive a direct current (DC) voltage and supply an alternating current (AC) power current to a transmission resonator by performing a switching operation. The detection device is configured to detect a voltage of an output terminal of the power amplifier based on the switching operation. The control unit is configured to detect an external object based on a change in the voltage, and control an output of the power amplifier in response to the change.
    Type: Application
    Filed: November 3, 2017
    Publication date: July 19, 2018
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Woo HAN, Byoung Woo RYU, Young Seung ROH, Se Joo KIM
  • Publication number: 20180152051
    Abstract: A wireless power transmitter includes: a converter including switching elements forming a bridge circuit and configured to output an alternating current (AC) voltage in response to control signals; a resonator including a resonant capacitor and a resonant coil, and configured to receive the AC voltage to transmit power wirelessly; and a controller configured to set a dead time at which a magnitude of the AC voltage is substantially zero in response to a signal received from a wireless power receiver.
    Type: Application
    Filed: October 23, 2017
    Publication date: May 31, 2018
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyo Young KIM, Seung Won PARK, Eun Young SHIN, Byoung Woo RYU, Dong Woo HAN, Ye Ji PARK, Young Seung ROH
  • Publication number: 20180097408
    Abstract: A power transmitter includes: a first resonator configured to wirelessly supply power to a power receiver and having an impedance that changes in response to a foreign material being proximate to the power transmitter; a second resonator having an impedance that changes in response to the foreign material being proximate to the power receiver; and controller configured to select either one of the first resonator and the second resonator in response to a wireless charging control, and to determine whether the foreign material is proximate to the power transmitter, based on a change in the impedance of the selected one of the first resonator and the second resonator.
    Type: Application
    Filed: August 30, 2017
    Publication date: April 5, 2018
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Soon Tack OH, Byoung Woo RYU, Ji Hoon KIM, Young Seung ROH
  • Patent number: 9614450
    Abstract: A feedback signal generating circuit may include a control voltage adjusting circuit outputting a feedback voltage by comparing a control voltage input from an external voltage source with a reference voltage and adjusting a ratio of control voltage drop, and an amplifying circuit generating a feedback signal by differentially amplifying the feedback voltage and a detection voltage associated with a current flowing in a load.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: April 4, 2017
    Assignee: SOLUM CO., LTD.
    Inventors: Ki Hong Kim, Byoung Woo Ryu, Jung Woo Choi
  • Patent number: 9454172
    Abstract: There is provided a voltage control circuit that is applicable to a LED device, a power supply or the like. The voltage control circuit includes: a voltage dividing unit dividing a supply voltage into a first voltage and a second voltage different from each other; a shunt regulator adjusting the first voltage according to the second voltage; and an output circuit unit outputting the voltage regulated by the shunt regulator.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: September 27, 2016
    Assignee: SOLUM CO., LTD.
    Inventors: Ki Hong Kim, Min Jin Kim, Byoung Woo Ryu, Heung Gyoon Choi
  • Patent number: 9450495
    Abstract: There is provided a single stage forward-flyback converter including a power converting unit switching input power to perform a forward power conversion operation while being switched on and perform a flyback power conversion operation while being switched off, a path providing unit clamping power formed by the forward power conversion operation of the power converting unit and power formed by the flyback power conversion operation thereof to provide power transfer paths, and a controlling unit controlling the power conversion operation of the power converting unit according to a voltage level of the input power.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: September 20, 2016
    Assignee: SOLUM CO., LTD
    Inventors: Sang Kyoo Han, Byoung Woo Ryu, Heung Gyoon Choi, Keun Wook Lee, Hong Sun Park
  • Patent number: 9357595
    Abstract: A light emitting diode driver includes a power supplying unit receiving an alternating current (AC) power and outputting a transformed power according to a predetermined ratio, a rectifying unit rectifying the output power from the power supplying unit, and a double voltage unit receiving the rectified power from the rectifying unit and generating an output voltage such that the level of the output voltage is variable, and has constant duty and frequency thereof even the variance of the voltage level.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: May 31, 2016
    Assignee: Solum Co., Ltd.
    Inventors: Keun Wook Lee, Byoung Woo Ryu