Patents by Inventor Gyeong Sik Mun
Gyeong Sik Mun 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: 11224103Abstract: An LED lighting apparatus includes a first LED light source and a second LED light source included in a first light source group; a third LED light source and a fourth LED light source included in a second light source group; a mode detection circuit configured to determine a mode; a current control unit for serial and parallel connection of the first light source group and the second light source group; balancing circuits for serial and parallel connection of the respective light source groups; and a current path providing circuit for providing current paths. The LED lighting apparatus performs light emission in various states depending on the change of a rectified voltage and the change of a mode.Type: GrantFiled: April 23, 2018Date of Patent: January 11, 2022Assignee: Silicon Works Co., Ltd.Inventors: Gyeong Sik Mun, Ki Soo Kwon, Sang Young Lee, Ki Chul An
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Publication number: 20210243863Abstract: An LED lighting apparatus includes a first LED light source and a second LED light source included in a first light source group; a third LED light source and a fourth LED light source included in a second light source group; a mode detection circuit configured to determine a mode; a current control unit for serial and parallel connection of the first light source group and the second light source group; balancing circuits for serial and parallel connection of the respective light source groups; and a current path providing circuit for providing current paths. The LED lighting apparatus performs light emission in various states depending on the change of a rectified voltage and the change of a mode.Type: ApplicationFiled: April 23, 2018Publication date: August 5, 2021Applicant: Silicon Works Co., Ltd.Inventors: Gyeong Sik Mun, Ki Soo Kwon, Sang Young Lee, Ki Chul An
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Patent number: 10912169Abstract: Disclosed is an LED lighting apparatus. The LED lighting apparatus may include a leakage current control unit configured to provide a leakage current path when a rectified voltage is retained at a predetermined voltage or less for a preset time or more, and a leakage current and retention current may be discharged through a leakage current path.Type: GrantFiled: July 25, 2017Date of Patent: February 2, 2021Assignee: Silicon Works Co., Ltd.Inventors: Gyeong Sik Mun, Sang Young Lee, Ki Soo Kwon, Ki Chul An, Yong Geun Kim
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Publication number: 20190274198Abstract: Disclosed is an LED lighting apparatus. The LED lighting apparatus may include a leakage current control unit configured to provide a leakage current path when a rectified voltage is retained at a predetermined voltage or less for a preset time or more, and a leakage current and retention current may be discharged through a leakage current path.Type: ApplicationFiled: July 25, 2017Publication date: September 5, 2019Applicant: SILICON WORKS CO., LTD.Inventors: Gyeong Sik MUN, Sang Young LEE, Ki Soo KWON, Ki Chul AN, Yong Geun KIM
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Patent number: 10299324Abstract: Provided is a lighting apparatus. The lighting apparatus may include two or more lighting units each including a plurality of LED groups which sequentially emit light in response to changes of a rectified voltage. The two or more lighting units may include one or more LED groups having the same light emitting sequence but having different light emitting points of time. Thus, current harmonic can be reduced, and power efficiency can be improved.Type: GrantFiled: July 7, 2015Date of Patent: May 21, 2019Assignee: SILICON WORKS CO., LTD.Inventors: Gyeong Sik Mun, Sang Young Lee, Ki Chul An, Yong Geun Kim
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Patent number: 10219336Abstract: Disclosed is an LED lighting apparatus which includes LED groups and emits light in response to a change of a rectified voltage. The LED lighting apparatus includes a balancing circuit which controls the rectified voltage to be applied to the LED groups in parallel or series to each other.Type: GrantFiled: May 30, 2018Date of Patent: February 26, 2019Assignee: SILICON WORKS CO., LTD.Inventors: Gyeong Sik Mun, Ki Soo Kwon
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Publication number: 20180368226Abstract: Disclosed is an LED lighting apparatus which includes LED groups and emits light in response to a change of a rectified voltage. The LED lighting apparatus includes a balancing circuit which controls the rectified voltage to be applied to the LED groups in parallel or series to each other.Type: ApplicationFiled: May 30, 2018Publication date: December 20, 2018Applicant: SILICON WORKS CO., LTD.Inventors: Gyeong Sik MUN, Ki Soo KWON
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Publication number: 20180328551Abstract: Disclosed is an LED lighting apparatus using a standardized module. The LED lighting apparatus can be configured by assembling a standardized light emitting module and a driving module reflecting a required specification. The driving module includes a driver configured to provide a current path corresponding to light emission of one or more LED groups and regulate a driving current, a sensing resistor connected to the current path of the driver, diodes installed for the respective channel terminals of the driver in order to block a reverse current, and one or more capacitors connected in parallel to the one or more LED groups.Type: ApplicationFiled: November 15, 2016Publication date: November 15, 2018Applicant: SILICON WORKS CO., LTD.Inventors: Yong Geun KIM, Gyeong Sik MUN
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Patent number: 9961732Abstract: Disclosed is a control circuit for a lighting apparatus using an LED as a light source. The control circuit controls a driving current of a driving circuit, using a monitoring result for a rectified voltage and a monitoring result for an output voltage of a specific LED group among a plurality of LED groups.Type: GrantFiled: February 22, 2017Date of Patent: May 1, 2018Assignee: SILICON WORKS CO., LTD.Inventors: Gyeong Sik Mun, Geon Soo Jang
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Publication number: 20170251531Abstract: Disclosed is a control circuit for a lighting apparatus using an LED as a light source. The control circuit controls a driving current of a driving circuit, using a monitoring result for a rectified voltage and a monitoring result for an output voltage of a specific LED group among a plurality of LED groups.Type: ApplicationFiled: February 22, 2017Publication date: August 31, 2017Applicant: SILICON WORKS CO., LTD.Inventors: Gyeong Sik MUN, Geon Soo JANG
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Patent number: 9730287Abstract: The present invention discloses a dimming regulation circuit which stabilizes a rectified voltage in response to an unstable output voltage of a dimmer and a lighting apparatus including the dimming regulation circuit. The dimming regulation circuit stabilizes the rectified voltage and provides the stabilized rectified voltage to a lamp, when a rectified voltage corresponds to a preset stabilization required range.Type: GrantFiled: June 23, 2015Date of Patent: August 8, 2017Assignee: SILICON WORKS CO., LTD.Inventors: Yong Geun Kim, Gyeong Sik Mun
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Publication number: 20170202072Abstract: Disclosed is a lighting apparatus using an LED as a light source. The lighting apparatus may include: a first driver configured to control a flow of a first current through a low-power switching element by comparing a reference voltage and a sensing voltage, in response to light emission of an LED group; and a second driver configured to form a flow of a second current through a high-power switching element in connection with the flow of the first current of the first driver, in response to light emission of the LED group. The lighting apparatus stably provides a current path for a current corresponding to high power.Type: ApplicationFiled: December 28, 2016Publication date: July 13, 2017Applicant: SILICON WORKS CO., LTD.Inventors: Yong Geun KIM, Gyeong Sik Mun, Geon Soo Jang
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Patent number: 9538605Abstract: Disclosed is a control circuit of an LED lighting apparatus having a current control function. The control circuit of the LED lighting apparatus may include: a current control circuit configured to control the LED lighting apparatus divided into a plurality of LED groups, and provide a current path corresponding to sequential light emissions of the LED groups in response to a rectified voltage; and surplus voltage buffer circuits corresponding to two or more LED groups, respectively, and each configured to buffer a surplus voltage.Type: GrantFiled: December 9, 2015Date of Patent: January 3, 2017Assignee: SILICON WORKS CO., LTD.Inventors: Yong Geun Kim, Sang Young Lee, Ki Chul An, Gyeong Sik Mun
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Patent number: 9532412Abstract: Disclosed is a lighting apparatus which includes LEDs and reduces flicker. The lighting apparatus may secure a charge voltage by performing a charge operation using a current corresponding to a rectified voltage equal to or more than a preset level, and compensate for the rectified voltage provided to a lighting unit including LED groups by performing a discharge operation for the charge voltage in response to the rectified voltage less than the preset level, thereby reducing flicker.Type: GrantFiled: October 15, 2015Date of Patent: December 27, 2016Assignee: SILICON WORKS CO., LTD.Inventors: Yong Geun Kim, Gyeong Sik Mun, Ki Chul An
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Patent number: 9516707Abstract: The present invention discloses an LED lighting apparatus. The LED lighting apparatus includes a converter for transforming rectified voltage in accordance with a switching operation according to a driving pulse and outputting the transformed voltage, a current regulator for generating the driving pulse having a pulse width varied in response to a control signal and the amount of current of the converter and switching the operation of the converter using the generated driving pulse, and a peripheral circuit module for providing the control signal for controlling the dimming of an LED lighting.Type: GrantFiled: December 2, 2013Date of Patent: December 6, 2016Assignee: SILICON WORKS CO., LTD.Inventors: Yong Geun Kim, Sang Young Lee, Gyeong Sik Mun, Ki Chul An
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Patent number: 9398660Abstract: Disclosed herein are a lighting system for emitting light using power having a phase controlled by a dimmer and improving the light emission state of a light source and a control circuit for the same. Shimmer can be improved by performing charging and discharging using a current supplied to a load or a current flowing in the current path of a load and performing current control using a charging voltage generated by the charging and discharging.Type: GrantFiled: February 17, 2015Date of Patent: July 19, 2016Assignee: SILICON WORKS CO., LTD.Inventors: Yong Geun Kim, Gyeong Sik Mun
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Publication number: 20160174327Abstract: Disclosed is a control circuit of an LED lighting apparatus having a current control function. The control circuit of the LED lighting apparatus may include: a current control circuit configured to control the LED lighting apparatus divided into a plurality of LED groups, and provide a current path corresponding to sequential light emissions of the LED groups in response to a rectified voltage; and surplus voltage buffer circuits corresponding to two or more LED groups, respectively, and each configured buffer a surplus voltage.Type: ApplicationFiled: December 9, 2015Publication date: June 16, 2016Applicant: SILICON WORKS CO., LTD.Inventors: Yong Geun KIM, Sang Young LEE, Ki Chul AN, Gyeong Sik MUN
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Publication number: 20160133587Abstract: The present invention relates to a substrate and integrated circuit chip with improved patterns, and more particularly to technology that is efficient in terms of thermal control and that can reduce the causes of occurrence of defects during the operation of a terminal to which a high voltage is applied. The present invention is characterized in that a first clearance distance between a first terminal, to which a voltage higher than voltages to be applied to the remaining terminals is applied, or first terminal pattern corresponding to the first terminal and a body pattern present between an integrated circuit chip and a substrate is larger than a second clearance distance between a second terminal, including at least some of the remaining terminals other than the first terminal, or second terminal pattern corresponding to the second terminal and the body pattern.Type: ApplicationFiled: October 27, 2015Publication date: May 12, 2016Inventors: Sang Young Lee, Gyeong Sik Mun, Ki Chul An
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Publication number: 20160119985Abstract: Disclosed is a lighting apparatus which includes LEDs and reduces flicker. The lighting apparatus may secure a charge voltage by performing a charge operation using a current corresponding to a rectified voltage equal to or more than a preset level, and compensate for the rectified voltage provided to a lighting unit including LED groups by performing a discharge operation for the charge voltage in response to the rectified voltage less than the preset level, thereby reducing flicker.Type: ApplicationFiled: October 15, 2015Publication date: April 28, 2016Inventors: Yong Geun KIM, Gyeong Sik MUN, Ki Chul AN
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Publication number: 20160014859Abstract: Provided is a lighting apparatus. The lighting apparatus may include two or more lighting units each including a plurality of LED groups which sequentially emit light in response to changes of a rectified voltage. The two or more lighting units may include one or more LED groups having the same light emitting sequence but having different light emitting points of time. Thus, current harmonic can be reduced, and power efficiency can be improved.Type: ApplicationFiled: July 7, 2015Publication date: January 14, 2016Inventors: Gyeong Sik MUN, Sang Young LEE, Ki Chul AN