Patents by Inventor Won Ji LEE

Won Ji LEE 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: 11958993
    Abstract: Disclosed herein are an adhesive protective film, an optical member including the same, and an optical display including the same. An adhesive protective film is formed of a composition including a (meth)acrylic binder derived from a monomer mixture including: an alkyl group-containing (meth)acrylic monomer; and at least one selected from among a hydroxyl group-containing (meth)acrylic monomer, a carboxyl group-containing (meth)acrylic monomer, and a polysiloxane (meth)acrylate, the adhesive protective film having an initial peel strength of about 100 gf/inch or less and a peel strength decrease rate of about 50% or less, as calculated according to Equation 1.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 16, 2024
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Irina Nam, Tae Ji Kim, Won Kim, Il Jin Kim, Jung Hyo Lee, Oh Hyeon Hwang
  • Patent number: 11942427
    Abstract: 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: Grant
    Filed: September 19, 2022
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Yong Yoo, Jong Jin Lee, Rak Hwan Kim, Eun-Ji Jung, Won Hyuk Hong
  • Publication number: 20240088432
    Abstract: An embodiment sulfur dioxide-based inorganic electrolyte is provided in which the sulfur dioxide-based inorganic electrolyte is represented by a chemical formula M·(A1·Cl(4-x)Fx)z·ySO2. In this formula, M is a first element selected from the group consisting of Li, Na, K, Ca, and Mg, A1 is a second element selected from the group consisting of Al, Fe, Ga, and Cu, x satisfies a first equation 0?x?4, y satisfies a second equation 0?y?6, and z satisfies a third equation 1?z?2.
    Type: Application
    Filed: April 12, 2023
    Publication date: March 14, 2024
    Inventors: Kyu Ju Kwak, Won Keun Kim, Eun Ji Kwon, Samuel Seo, Yeon Jong Oh, Kyoung Han Ryu, Dong Hyun Lee, Han Su Kim, Ji Whan Lee, Seong Hoon Choi, Seung Do Mun
  • Patent number: 11925112
    Abstract: The present invention provides a novel compound that can improve the luminous efficiency, stability and life span of the element, an organic electronic element using the same, and an electronic device thereof.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: March 5, 2024
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Je Woo Lee, Hyun Ji Oh, Sun Hee Lee, Won Sam Kim, Byoung Yeop Kang
  • Patent number: 11791706
    Abstract: The present invention relates a low power control device using a sleep timer, and more particularly, to a low power control device using a controllable sleep timer which disables each component of a circuit while discharging an output voltage Vo using a control signal of a sleep timer in which a width of an OFF signal is larger than a width of an ON signal in a light load state and sequentially enables each component of the circuit while charging the output voltage in a predetermined order to minimize power consumption according to a loading level of a load.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: October 17, 2023
    Assignee: POWER LSI CO.LTD
    Inventors: Won Tae Lee, Won Ji Lee, Chang Sik Shin, Chuen Sik Jung, Gyu Won Lee
  • Patent number: 11736008
    Abstract: The present invention relates to a multi-power supply device capable of controlling a sequence, and more particularly, to a multi-power supply device capable of controlling a sequence for a circuit in which two or more power sources are supplied from the outside and when one of the power sources has a problem so that the power is not supplied to an internal block, an internal voltage is stably supplied from another power source.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: August 22, 2023
    Assignee: Power LSI Co. ltd
    Inventors: Won Tae Lee, Won Ji Lee, Chang Sik Shin, Chuen Sik Jung, Gyu Won Lee
  • Patent number: 11736002
    Abstract: The present invention relates to an adaptive soft start and soft stop device for a converter, and more particularly, provides an adaptive soft start and soft stop device for a converter which controls a final output voltage to be increased or decreased with a predetermined gradient by increasing a duty at a predetermined rate or increases a frequency during a start period using an input voltage Vin and an output voltage Vo and decreasing the duty at a predetermined rate or decreases a frequency during a stop period.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 22, 2023
    Assignee: Power LSI Co. ltd
    Inventors: Won Tae Lee, Won Ji Lee, Chang Sik Shin, Chuen Sik Jung, Gyu Won Lee
  • Publication number: 20230231469
    Abstract: The present invention relates to an adaptive soft start and soft stop device for a converter, and more particularly, provides an adaptive soft start and soft stop device for a converter which controls a final output voltage to be increased or decreased with a predetermined gradient by increasing a duty at a predetermined rate or increases a frequency during a start period using an input voltage Vin and an output voltage Vo and decreasing the duty at a predetermined rate or decreases a frequency during a stop period.
    Type: Application
    Filed: June 28, 2021
    Publication date: July 20, 2023
    Inventors: Won Tae LEE, Won Ji LEE, Chang Sik SHIN, Chuen Sik JUNG, Gyu Won LEE
  • Publication number: 20230198391
    Abstract: The present invention relates to a multi-power supply device capable of controlling a sequence, and more particularly, to a multi-power supply device capable of controlling a sequence for a circuit in which two or more power sources are supplied from the outside and when one of the power sources has a problem so that the power is not supplied to an internal block, an internal voltage is stably supplied from another power source.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Inventors: Won Tae LEE, Won Ji LEE, Chang Sik SHIN, Chuen Sik JUNG, Gyu Won LEE
  • Publication number: 20230198369
    Abstract: The present invention relates a low power control device using a sleep timer, and more particularly, to a low power control device using a controllable sleep timer which disables each component of a circuit while discharging an output voltage Vo using a control signal of a sleep timer in which a width of an OFF signal is larger than a width of an ON signal in a light load state and sequentially enables each component of the circuit while charging the output voltage in a predetermined order to minimize power consumption according to a loading level of a load.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Inventors: Won Tae LEE, Won Ji LEE, Chang Sik SHIN, Chuen Sik JUNG, Gyu Won LEE
  • Patent number: 9913337
    Abstract: Disclosed is a control circuit of an LED lighting apparatus, which compensates for power for light emission of a lamp including LEDs. The control circuit can generate a compensation signal corresponding to change of power provided to the lamp, and uniformly maintain the power by controlling a current provided to the lamp in response to the compensation signal. Thus, the control circuit can compensate for the power change of the lamp due to a power supply environment factor in a building, region, or country or a temporarily unstable power supply environment factor, such that the lamp can emit light at uniform luminance.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: March 6, 2018
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Goo Kim, Kyung Min Kim, Jong Min Lee, Young Suk Son, Won Ji Lee
  • Patent number: 9609702
    Abstract: Disclosed are an LED lighting apparatus and a control circuit thereof which controls the brightness of a lamp including LEDs using a dimmer. The LED lighting apparatus and the control circuit use a starting current based on a rectified voltage, in order to supply a holding current to the dimmer in a state where a lamp including LEDs is turned off.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: March 28, 2017
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Goo Kim, Won Ji Lee, Kyung Min Kim, Jong Min Lee, Young Suk Son
  • Patent number: 9572210
    Abstract: Disclosed is a control circuit of an LED lighting apparatus having a dimming function. The control circuit provides a current path corresponding to light emitting states of LED channels in response to a rectified voltage, and performs dimming by controlling a current amount of the current path in response to a dimming control signal provided as an analog signal or digital signal.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 14, 2017
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Kyung Min Kim, Yong Goo Kim, Won Ji Lee, Jong Min Lee, Young Suk Son
  • Patent number: 9572220
    Abstract: Disclosed are an LED lighting apparatus and a control circuit thereof which controls illumination of a lamp including LEDs using a dimmer. The LED lighting apparatus includes a flicker control unit which provides a control signal corresponding to a rectified voltage having a low angle corresponding to a preset low angle region and equal to or less than a preset level or detects an initial abnormal waveform diagram of the rectified voltage and provides a control signal corresponding to the abnormal waveform period, and controls a current path for light emission of the lamp.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: February 14, 2017
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Goo Kim, Won Ji Lee, Kyung Min Kim, Jong Min Lee, Min Soo Kim, Young Suk Son
  • Publication number: 20160219667
    Abstract: Disclosed is a control circuit of an LED lighting apparatus, which compensates for power for light emission of a lamp including LEDs. The control circuit can generate a compensation signal corresponding to change of power provided to the lamp, and uniformly maintain the power by controlling a current provided to the lamp in response to the compensation signal. Thus, the control circuit can compensate for the power change of the lamp due to a power supply environment factor in a building, region, or country or a temporarily unstable power supply environment factor, such that the lamp can emit light at uniform luminance.
    Type: Application
    Filed: April 3, 2014
    Publication date: July 28, 2016
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Yong Goo KIM, Kyung Min KIM, Jong Min LEE, Young Suk SON, Won Ji LEE
  • Publication number: 20160150607
    Abstract: Disclosed are an LED lighting apparatus and a control circuit thereof which controls the brightness of a lamp including LEDs using a dimmer. The LED lighting apparatus and the control circuit use a starting current based on a rectified voltage, in order to supply a holding current to the dimmer in a state where a lamp including LEDs is turned off.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 26, 2016
    Applicant: SILICONE WORKS CO., LTD.
    Inventors: Yong Goo KIM, Won Ji LEE, Kyung Min KIM, Jong Min LEE, Young Suk SON
  • Publication number: 20160143107
    Abstract: Disclosed are an LED lighting apparatus and a control circuit thereof which controls illumination of a lamp including LEDs using a dimmer. The LED lighting apparatus includes a flicker control unit which provides a control signal corresponding to a rectified voltage having a low angle corresponding to a preset low angle region and equal to or less than a preset level or detects an initial abnormal waveform diagram of the rectified voltage and provides a control signal corresponding to the abnormal waveform period, and controls a current path for light emission of the lamp.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 19, 2016
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Yong Goo KIM, Won Ji LEE, Kyung Min KIM, Jong Min LEE, Min Soo KIM, Young Suk SON
  • Patent number: 9288862
    Abstract: Disclosed is a light emitting diode lighting apparatus capable of improving a power factor and temperature characteristics. The light emitting diode lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of light emitting diode channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 15, 2016
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Geun Kim, Sang Young Lee, Yong Goo Kim, Won Ji Lee, Young Suk Son
  • Publication number: 20150312984
    Abstract: Disclosed is a control circuit of an LED lighting apparatus having a dimming function. The control circuit provides a current path corresponding to light emitting states of LED channels in response to a rectified voltage, and performs dimming by controlling a current amount of the current path in response to a dimming control signal provided as an analog signal or digital signal.
    Type: Application
    Filed: December 27, 2013
    Publication date: October 29, 2015
    Inventors: Kyung Min KIM, Yong Goo KIM, Won Ji LEE, Jong Min LEE, Young Suk SON
  • Publication number: 20150048744
    Abstract: A LED driving circuit drives a plurality of LED (Light Emitting Diode) groups, has a common voltage that is changed according to an input voltage of the plurality of LED groups, and includes a common node, a plurality of phase switches arranged between the output terminals of the plurality of LED groups and the common node, and a plurality of phase switch control units that form current flows among a corresponding LED group, a corresponding phase switch, and the common node in phase sections of the input voltage based on the common voltage and a corresponding reference voltage, the input voltage having a time-variable phase. Accordingly, the LED driving circuit can correct a power factor without using an inductor or a capacitor.
    Type: Application
    Filed: April 2, 2013
    Publication date: February 19, 2015
    Inventors: So Bong Shin, Yong Goo Kim, Ok Hwan Kwon, Won Ji Lee, Young Suk Son