Patents by Inventor Young Geun Choi

Young Geun 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: 9343779
    Abstract: Provided are a method of preparing an electrode assembly, in which both sides of a single current collector are coated to form an anode and a cathode, and the current collector is then bent into a vertical sectional zigzag shape and integrated in a state of disposing a separator at interfaces between facing electrode patterns, an electrode assembly prepared by the above method, and a secondary battery comprising the electrode assembly.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 17, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Kyung Do, Jong Mo Jung, You Rim Yoon, Young Geun Choi, Joo Young Choi, Seung Jae Yoon, Jong Hyun Chae, Jae Kyung Kim
  • Patent number: 9343137
    Abstract: The semiconductor memory device includes a power control signal generator and a sense amplifier circuit. The power control signal generator generates a first power control signal that is enabled in response to a temperature latch signal generated in response to latching a temperature signal in a predetermined mode. The sense amplifier circuit generates a first power signal having a first drive voltage in response to the first power control signal. In addition, the sense amplifier circuit senses and amplifies a voltage level of a bit line using the first power signal as a power supply voltage.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 17, 2016
    Assignee: SK HYNIX INC.
    Inventor: Young Geun Choi
  • Publication number: 20150380074
    Abstract: The semiconductor memory device includes a power control signal generator and a sense amplifier circuit. The power control signal generator generates a first power control signal that is enabled in response to a temperature latch signal generated in response to latching a temperature signal in a predetermined mode. The sense amplifier circuit generates a first power signal having a first drive voltage in response to the first power control signal. In addition, the sense amplifier circuit senses and amplifies a voltage level of a bit line using the first power signal as a power supply voltage.
    Type: Application
    Filed: September 26, 2014
    Publication date: December 31, 2015
    Inventor: Young Geun CHOI
  • Publication number: 20150318575
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the non-aqueous solvent includes an ether based solvent and a glyme based solvent and a ratio of the ether based solvent to the glyme based solvent is 20:80 to 60:40 based on the total volume of the non-aqueous solvent, and a secondary battery including the same.
    Type: Application
    Filed: November 22, 2013
    Publication date: November 5, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Young Geun Choi, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Seung Jae Yoon
  • Publication number: 20150303471
    Abstract: Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below, (ii) an anode active material including amorphous carbon, and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether-based solvent, Lii+aM(PO4?b)Xb ??(1) wherein M is at least one selected from the group consisting of Group II to XII metals, X is at least one selected from F, S, and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Application
    Filed: November 21, 2013
    Publication date: October 22, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Young Geun Choi, Geun Chang Chung, Yourim Yoon, Seung Jae Yoon, Jong Mo Jung, Jonghyun Chae
  • Publication number: 20150288032
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the electrolyte includes a sulfanyl based solvent, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 22, 2013
    Publication date: October 8, 2015
    Applicants: LG CHEM, LTD., LG CHEM, LTD.
    Inventors: Young Geun Choi, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Seung Jae Yoon
  • Publication number: 20150263385
    Abstract: Disclosed is a lithium secondary battery including: (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; (ii) an anode active material including amorphous carbon; and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether based solvent, wherein propylene carbonate (PC) is included in an amount of 1 wt % to 60 wt % in the electrolyte for lithium secondary batteries, based on the total weight of the electrolyte, Li1+aM(PO4-b)Xb??(1) wherein M is at least one selected from metals of Groups II to XII; X is at least one selected from F, S and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 17, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Yourim Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Young Cheol Choi, Young Geun Choi, Seung Jae Yoon
  • Publication number: 20150255794
    Abstract: Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; and (ii) an anode active material including amorphous carbon, Li1+aM(PO4?b)Xb??(1) wherein M is at least one selected from metals of Groups II to XII, X is at least one selected from F, S and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Application
    Filed: November 21, 2013
    Publication date: September 10, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Young Geun Choi, Geun Chang Chung, Yourim Yoon, Seung Jae Yoon, Jong Mo Jung, Jonghyun Chae
  • Publication number: 20150249270
    Abstract: Disclosed is an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the lithium salt includes at least one selected from the group consisting of lithium oxalyldifluoroborate (LiODFB) and lithium hexafluorophosphate (LiPF6), and the non-aqueous solvent includes an ether based solvent.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 3, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Seung Jae Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Young Geun Choi
  • Publication number: 20150249269
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the lithium salt includes lithium bis(fluorosulfonyl)imide (LiFSI), or lithium bis(fluorosulfonyl)imide (LiFSI) and lithium hexafluorophosphate (LiPF6), and the non-aqueous solvent includes an ether based solvent.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 3, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Yourim Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Young Cheol Choi, Young Geun Choi, Seung Jae Yoon
  • Publication number: 20150249267
    Abstract: Disclosed is an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which a silane based material is included in an amount of 0.1 to 20 wt % based on the total weight of the electrolyte, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 3, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Yourim Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Young Cheol Choi, Young Geun Choi, Seung Jae Yoon
  • Publication number: 20150249271
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including 10 wt % to 90 wt % of an ester based solvent and 10 wt % to 90 wt % of a carbonate based solvent with respect to the total weight of a non-aqueous solvent, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 3, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Young Geun Choi, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Seung Jae Yoon
  • Patent number: 9086713
    Abstract: An internal voltage generation circuit utilizing dual comparison signal generators and dual drivers to drive the internal voltage to a selected level. The second driver is responsive to a control signal derived from both of the comparison signal generators. The internal voltage generation circuit overcomes a problem with prior art circuits that may not permit the internal voltage to be driven to the selected level over a range of power supply voltages.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: July 21, 2015
    Assignee: SK Hynix Inc.
    Inventor: Young Geun Choi
  • Patent number: 9058895
    Abstract: Provided is a device and method for controlling self-refresh which reduces current when a semiconductor device stays in a self-refresh operation. The device for controlling self-refresh includes a bulk voltage controller configured to combine an idle signal indicating an active termination state of a bank and a self-refresh signal so as to generate a control signal for controlling a bulk voltage, a bulk voltage driver configured to vary a level of the bulk voltage in response to the control signal, and output the bulk voltage with a different level, and a refresh controller configured to output the self-refresh active signal upon receiving the bulk voltage as a bulk bias voltage.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 16, 2015
    Assignee: SK Hynix Inc.
    Inventors: Nam Kyu Jang, Young Geun Choi
  • Publication number: 20150091619
    Abstract: A semiconductor apparatus include a signal level switching decision unit and a transmitter unit. The signal level switching decision unit generates a switching control signal according to off-current of transistors included therein. The transmitter unit outputs a transmitter input signal as a transmitter output signal in response to a switching control signal.
    Type: Application
    Filed: April 1, 2014
    Publication date: April 2, 2015
    Applicant: SK hynix Inc.
    Inventor: Young Geun CHOI
  • Publication number: 20140227583
    Abstract: Provided are a method of preparing an electrode assembly, in which both sides of a single current collector are coated to form an anode and a cathode, and the current collector is then bent into a vertical sectional zigzag shape and integrated in a state of disposing a separator at interfaces between facing electrode patterns, an electrode assembly prepared by the above method, and a secondary battery comprising the electrode assembly.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 14, 2014
    Applicant: LG Chem. Ltd.
    Inventors: Hyun Kyung Do, Jong Mo Jung, You Rim Yoon, Young Geun Choi, Joo Young Choi, Seung Jae Yoon, Jong Hyun Chae, Jae Kyung Kim
  • Publication number: 20140177360
    Abstract: A device and method for controlling self-refresh is disclosed, which reduces current when a semiconductor device stays in a self-refresh operation. The device for controlling self-refresh includes: a bulk voltage controller configured to combine an idle signal indicating an active termination state of a bank and a self-refresh signal so as to generate a control signal for controlling a bulk voltage, a bulk voltage driver configured to vary a level of the bulk voltage in response to the control signal, and output the bulk voltage with a different level, and a refresh controller configured to output the self-refresh active signal upon receiving the bulk voltage as a bulk bias voltage.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 26, 2014
    Applicant: SK hynix Inc.
    Inventors: Nam Kyu JANG, Young Geun CHOI
  • Publication number: 20140176101
    Abstract: An internal voltage generation circuit utilizing dual comparison signal generators and dual drivers to drive the internal voltage to a selected level. The second driver is responsive to a control signal derived from both of the comparison signal generators. The internal voltage generation circuit overcomes a problem with prior art circuits that may not permit the internal voltage to be driven to the selected level over a range of power supply voltages.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 26, 2014
    Applicant: SK HYNIX INC.
    Inventor: Young Geun CHOI
  • Publication number: 20140140252
    Abstract: A power reduction method for a multi-path receiver including multi-receivers, includes detecting a state of the multi-receivers, and controlling clock gating or power gating of the multi-receivers based on the state.
    Type: Application
    Filed: August 30, 2013
    Publication date: May 22, 2014
    Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Han KIM, Young Geun CHOI, Sung Joo YOO, Joon Seong KANG, Young Jun HONG
  • Patent number: 8649237
    Abstract: A power-up signal generation circuit includes a first driving section configured to generate a pre-power-up signal by driving a first node to a first pull-up drivability or driving the first node to a first pull-down drivability in response to an internal voltage when not in an active mode, and a second driving section configured to generate the pre-power-up signal by driving the first node to a second pull-up drivability or driving the first node to a second pull-down drivability in response to the internal voltage in the active mode. The first pull-up drivability is larger than the second pull-up drivability, and the first pull-down drivability is smaller than the second pull-down drivability.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: February 11, 2014
    Assignee: SK Hynix Inc.
    Inventor: Young Geun Choi