Patents by Inventor Young-gi Ryu
Young-gi 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).
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Publication number: 20240128500Abstract: A solid electrolyte, including sulfide-based solid electrolyte particles and a coating layer disposed on the surface of the sulfide-based solid electrolyte particles and including a metal alkoxide.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Inventors: Suk-Gi HONG, Myeongju HA, Hwichul YANG, Pilsang YUN, Hyungbeom KIM, Young Gyoon RYU, Kyusung PARK, Saheum KIM, Yongjun JANG, Yonggu KIM, Sungman CHO, Sunho CHOI, Seonghyeon CHOI
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Publication number: 20240128502Abstract: An embodiment solid electrolyte includes a first compound and a second compound. The first compound is represented by a first chemical formula Li7-aPS6-a(X11-bX2b)a, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, and wherein 0<a?2 and 0<b<1, and the second compound is represented by a second chemical formula Li7-cP1-2dMdS6-c-3d(X11-eX2e)c, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, wherein M represents Ge, Si, Sn, or any combination thereof, and wherein 0<c?2, 0<d<0.5, and 0<e<1.Type: ApplicationFiled: August 14, 2023Publication date: April 18, 2024Inventors: Sa Heum Kim, Yong Jun Jang, Yong Gu Kim, Sung Man Cho, Sun Ho Choi, Seong Hyeon Choi, Kyu Sung Park, Young Gyoon Ryu, Suk Gi Hong, Pil Sang Yun, Myeong Ju Ha, Hyun Beom Kim, Hwi Chul Yang
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Patent number: 10411590Abstract: Provided is a power consumption reduction type power converter. For example, such a power converter includes a regulator configured to convert a power voltage into an operation power of a main integrated circuit (IC), a mode detecting pin configured to detect a voltage level of the operation power, wherein the detected voltage level indicates a disable mode or an enable mode, a mode signal output circuit connected to the mode detecting pin, configured to output a mode converting signal, and a switching controller configured to block or connect a power route according to the mode converting signal to supply or block the operation power from being provided to the main IC, wherein the mode detecting pin is connected to a first switch and a first capacitor to perform a charging or a discharging operation of the first capacitor according to a switching operation of the first switch.Type: GrantFiled: March 28, 2016Date of Patent: September 10, 2019Assignee: MagnaChip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, In Ho Hwang, Young Gi Ryu, Tae Young Park, Sang Hoon Jeong
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Patent number: 9992845Abstract: A light-emitting diode (LED) driver circuit and a light apparatus including the LED driver circuit are provided. The light apparatus includes an LED array, an input unit, a rectifier, and a control circuit. The LED array includes LED devices connected to one another in series. The input unit receives an alternating current (AC) power source. The rectifier circuit full-wave rectifies the received AC power source signal and supplies the full-wave rectified AC power source signal to the LED array. The control circuit selectively lights the LED devices according to a voltage level of the full-wave rectified AC power source signal. The control circuit includes switching elements and comparators. The switching elements selectively force nodes between the LED devices to be grounded. The comparators turn-on one of the switching elements according to the voltage level of the full-wave rectified AC power source signal.Type: GrantFiled: December 4, 2012Date of Patent: June 5, 2018Assignee: Magnachip Semiconductor, Ltd.Inventors: Hyun-Jung Kim, Young-gi Ryu
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Patent number: 9887621Abstract: The present examples relate to a power factor correction device, a power factor correction method, and a corresponding converter, in which when an input signal inputted into the converter is changed, a reference signal is also changed to fit to the input signal in consideration of only the frequency and the phase of the input signal. Thus, even without a specifically designated control circuit, examples make it possible to improve power factor correction and Total Harmonic Distortion (THD) and to reduce the size of a semiconductor chip, and examples are potentially used for a device receiving waveforms other than a sine wave.Type: GrantFiled: December 29, 2015Date of Patent: February 6, 2018Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, In Ho Hwang, Young Gi Ryu, Sang Hoon Jeong, Gyu Ho Lim
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Patent number: 9887618Abstract: There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.Type: GrantFiled: April 22, 2014Date of Patent: February 6, 2018Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, James Jung, Hae Wook Kim, Young Gi Ryu, Julie Jang
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Patent number: 9692404Abstract: A power factor correction controlling circuit includes a control signal providing circuit configured to provide a control signal associated with a feedback signal, the feedback signal being controlled based on a bias signal, a pulse width modulation signal controlling circuit configured to control a pulse width modulation signal based on one of first and second bias signals and a power factor controlling circuit configured to provide a power factor control signal when an amplitude of the pulse width modulation signal reaches that of the power factor control signal. Such a circuit Is able to operate stably, regardless of a load condition and an input voltage condition.Type: GrantFiled: December 15, 2015Date of Patent: June 27, 2017Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, In Ho Hwang, Gyu Ho Lim, Young Gi Ryu, Jun Sik Min
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Patent number: 9496703Abstract: A leakage current detection circuit includes a driving voltage detection unit that detects a cut-off point of a driving voltage regulated through a driving voltage switch, a leakage current detection unit that detects a leakage current of the driving voltage switch after cutting off of the driving voltage, generates a leakage detection signal when a driving voltage related to the leakage current exceeds a reference detection voltage and a driving voltage control unit that turns off the driving voltage switch at a cut-off point of the driving voltage to cut off the driving voltage and maintain the driving voltage switch in an off state when the leakage detection signal is received. The leakage current detection circuit detects a leakage current passing through the driving voltage switch when abnormal operation of a light emitting diode light apparatus occurs, and keeps the driving voltage switch in an off state during cutoff periods to prevent burning of the drive voltage switch.Type: GrantFiled: March 11, 2016Date of Patent: November 15, 2016Assignee: MagnaChip Semiconductor, Ltd.Inventors: Doo Soo Shin, Su Wan Park, Young Gi Ryu, Young Lok Shin
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Publication number: 20160294286Abstract: Provided is a power consumption reduction type power converter. For example, such a power converter includes a regulator configured to convert a power voltage into an operation power of a main integrated circuit (IC), a mode detecting pin configured to detect a voltage level of the operation power, wherein the detected voltage level indicates a disable mode or an enable mode, a mode signal output circuit connected to the mode detecting pin, configured to output a mode converting signal, and a switching controller configured to block or connect a power route according to the mode converting signal to supply or block the operation power from being provided to the main IC, wherein the mode detecting pin is connected to a first switch and a first capacitor to perform a charging or a discharging operation of the first capacitor according to a switching operation of the first switch.Type: ApplicationFiled: March 28, 2016Publication date: October 6, 2016Applicant: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan CUI, In Ho HWANG, Young Gi RYU, Tae Young PARK, Sang Hoon JEONG
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Publication number: 20160276824Abstract: A leakage current detection circuit includes a driving voltage detection unit that detects a cut-off point of a driving voltage regulated through a driving voltage switch, a leakage current detection unit that detects a leakage current of the driving voltage switch after cutting off of the driving voltage, generates a leakage detection signal when a driving voltage related to the leakage current exceeds a reference detection voltage and a driving voltage control unit that turns off the driving voltage switch at a cut-off point of the driving voltage to cut off the driving voltage and maintain the driving voltage switch in an off state when the leakage detection signal is received. The leakage current detection circuit detects a leakage current passing through the driving voltage switch when abnormal operation of a light emitting diode light apparatus occurs, and keeps the driving voltage switch in an off state during cutoff periods to prevent burning of the drive voltage switch.Type: ApplicationFiled: March 11, 2016Publication date: September 22, 2016Inventors: Doo Soo SHIN, Su Wan PARK, Young Gi RYU, Young Lok SHIN
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Patent number: 9438121Abstract: A power converter according to examples reduces standby power consumption. The power converter includes a rectifier configured to rectify AC power into DC power, a transformer configured to output power by converting a voltage of DC power rectified by the rectifier, a PWM control module configured to control an output power by switching a power switching device connected to the transformer, a first external switch configured to provide a disable signal, a first capacitor that is connected in parallel to one side of the first external switch, a second external switch configured to provide an enable signal, and a second capacitor that is connected in parallel to one side of the second external switch.Type: GrantFiled: April 22, 2014Date of Patent: September 6, 2016Assignee: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan Cui, Young Gi Ryu, James Jung, Hae Wook Kim, Julie Jang
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Publication number: 20160218616Abstract: The present examples relate to a power factor correction device, a power factor correction method, and a corresponding converter, in which when an input signal inputted into the converter is changed, a reference signal is also changed to fit to the input signal in consideration of only the frequency and the phase of the input signal. Thus, even without a specifically designated control circuit, examples make it possible to improve power factor correction and Total Harmonic Distortion (THD) and to reduce the size of a semiconductor chip, and examples are potentially used for a device receiving waveforms other than a sine wave.Type: ApplicationFiled: December 29, 2015Publication date: July 28, 2016Applicant: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan CUI, In Ho HWANG, Young Gi RYU, Sang Hoon JEONG, Gyu Ho LIM
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Publication number: 20160218704Abstract: A power factor correction controlling circuit includes a control signal providing circuit configured to provide a control signal associated with a feedback signal, the feedback signal being controlled based on a bias signal, a pulse width modulation signal controlling circuit configured to control a pulse width modulation signal based on one of first and second bias signals and a power factor controlling circuit configured to provide a power factor control signal when an amplitude of the pulse width modulation signal reaches that of the power factor control signal. Such a circuit Is able to operate stably, regardless of a load condition and an input voltage condition.Type: ApplicationFiled: December 15, 2015Publication date: July 28, 2016Applicant: Magnachip Semiconductor, Ltd.Inventors: Zhi Yuan CUI, In Ho HWANG, Gyu Ho LIM, Young Gi RYU, Jun Sik MIN
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Publication number: 20150003122Abstract: There is provided a power converter for reducing standby power consumption. The power converter includes a rectifier configured to rectify AC power into DC power, a transformer configured to output power by converting a voltage of DC power rectified by the rectifier, a PWM control module configured to control an output power by switching a power switching device connected to the transformer, a first external switch configured to provide a disable signal, a first capacitor that is connected in parallel to one side of the first external switch, a second external switch configured to provide an enable signal, and a second capacitor that is connected in parallel to one side of the second external switch.Type: ApplicationFiled: April 22, 2014Publication date: January 1, 2015Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Zhi Yuan CUI, Young Gi RYU, James JUNG, Hae Wook KIM, Julie JANG
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Publication number: 20150003123Abstract: There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.Type: ApplicationFiled: April 22, 2014Publication date: January 1, 2015Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Zhi Yuan CUI, James JUNG, Hae Wook KIM, Young Gi RYU, Julie JANG
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Patent number: 8773349Abstract: A backlight driving circuit that provides backlight to a display panel of a display apparatus includes a power supply unit configured to supply power, a converter configured to convert and output a voltage of the supplied power, a light-emitting module supplied with the outputted voltage from the converter and providing the backlight, a switch connected to an output terminal of the light-emitting module and controlling an operation of the light-emitting module, a feedback resistor connected to an output terminal of the switch and sensing a voltage of a current flowing in the light-emitting module, a short-circuit sensing resistor connected between a ground of the power supply unit and a ground of the feedback resistor, and a short-circuit sensor configured to sense a voltage value of a current applied to the feedback resistor or the short-circuit sensing resistor according to whether the switch is switched on or off.Type: GrantFiled: January 13, 2012Date of Patent: July 8, 2014Assignee: Magnachip Semiconductor, Ltd.Inventors: Joo-han Yoon, Young-gi Ryu
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Publication number: 20130169160Abstract: A light-emitting diode (LED) driver circuit and a light apparatus including the LED driver circuit are provided. The light apparatus includes an LED array, an input unit, a rectifier, and a control circuit. The LED array includes LED devices connected to one another in series. The input unit receives an alternating current (AC) power source. The rectifier circuit full-wave rectifies the received AC power source signal and supplies the full-wave rectified AC power source signal to the LED array. The control circuit selectively lights the LED devices according to a voltage level of the full-wave rectified AC power source signal. The control circuit includes switching elements and comparators. The switching elements selectively force nodes between the LED devices to be grounded. The comparators turn-on one of the switching elements according to the voltage level of the full-wave rectified AC power source signal.Type: ApplicationFiled: December 4, 2012Publication date: July 4, 2013Applicant: Magnachip Semiconductor, Ltd.Inventors: Hyun-jung KIM, Young-gi RYU
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Publication number: 20120182328Abstract: A backlight driving circuit that provides backlight to a display panel of a display apparatus includes a power supply unit configured to supply power, a converter configured to convert and output a voltage of the supplied power, a light-emitting module supplied with the outputted voltage from the converter and providing the backlight, a switch connected to an output terminal of the light-emitting module and controlling an operation of the light-emitting module, a feedback resistor connected to an output terminal of the switch and sensing a voltage of a current flowing in the light-emitting module, a short-circuit sensing resistor connected between a ground of the power supply unit and a ground of the feedback resistor, and a short-circuit sensor configured to sense a voltage value of a current applied to the feedback resistor or the short-circuit sensing resistor according to whether the switch is switched on or off.Type: ApplicationFiled: January 13, 2012Publication date: July 19, 2012Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Joo-han Yoon, Young-gi Ryu