Patents by Inventor Cheol-Woong Lee

Cheol-Woong 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: 11973106
    Abstract: A semiconductor device includes a lower electrode; a supporter supporting an outer wall of the lower electrode; a dielectric layer formed on the lower electrode and the supporter; an upper electrode on the dielectric layer; a first interfacial layer disposed between the lower electrode and the dielectric layer and selectively formed on a surface of the lower electrode among the lower electrode and the supporter; and a second interfacial layer disposed between the dielectric layer and the upper electrode, wherein the first interfacial layer is a stack of a metal oxide contacting the lower electrode and a metal nitride contacting the dielectric layer.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: April 30, 2024
    Assignee: SK hynix Inc.
    Inventors: Jae Hee Song, Dong Hyun Lee, Kyung Woong Park, Cheol Hwan Park, Ki Vin Im
  • Publication number: 20230231791
    Abstract: An electronic device and a method of improving a performance of a software-defined networking (SDN) of the electronic device are provided. The method includes: identifying at least one policy from a flow table of the software-defined networking; identifying performance index parameters based on information about the at least one policy; determining whether or not an improvement in the performance of the software-defined networking is required based on the performance index parameters and a target performance index; when the improvement in the performance of the software-defined networking is determined to be required, executing a predetermined algorithm based on information about the performance index parameters to check execution information about the at least one policy; and updating the at least one policy based on the execution information.
    Type: Application
    Filed: September 30, 2022
    Publication date: July 20, 2023
    Inventors: Sangyoon OH, Byeong Hee ROH, Dae Gun YOON, Cheol Woong LEE, Kyung Woo KIM
  • Patent number: 10998351
    Abstract: Disclosed are a source drive integrated circuit (IC), a method of manufacturing the same, and a display apparatus including the source drive IC. The source drive IC includes a core portion, a first channel portion disposed outside one side of the core portion, a second channel portion disposed outside the other side of the core portion, a first resistor string provided inward from the one side of the core portion to generate a plurality of gamma voltages, a first resistance corrector provided between the first resistor string and the first channel portion, and a first connection line extending from the first resistor string to each of the first channel portion and the second channel portion and transferring the plurality of gamma voltages to the first channel portion and the second channel portion. The first connection line extends to the first channel portion via the first resistance corrector.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: May 4, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Myeong Woo Oh, Cheol Woong Lee, Byeong Jae Park, Dong Geon Lee, Tae Woo Ryu
  • Patent number: 10923069
    Abstract: Disclosed is a source drive integrated circuit comprising: a core unit, a channel processing unit provided in each of a channel area disposed in a first side of the control area and a channel area disposed in a second side of the control area facing the first side to convert digital data, corresponding to a digital image signal transferred from the core unit, into a data voltage corresponding to an analog image signal and to output the data voltage, a resistor string provided in at least one of a pad area disposed in a third side of the control area and a pad area disposed in a fourth side of the control area facing the third side to generate a gamma voltage for converting the digital data into the data voltage and to supply the gamma voltage to the channel processing unit, and N number of gamma pads.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: February 16, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Myeong Woo Oh, Cheol Woong Lee, Jae Sup Han, Hee Ju Kwak, Kyu Hyeong Lee
  • Publication number: 20200027905
    Abstract: Disclosed are a source drive integrated circuit (IC), a method of manufacturing the same, and a display apparatus including the source drive IC. The source drive IC includes a core portion, a first channel portion disposed outside one side of the core portion, a second channel portion disposed outside the other side of the core portion, a first resistor string provided inward from the one side of the core portion to generate a plurality of gamma voltages, a first resistance corrector provided between the first resistor string and the first channel portion, and a first connection line extending from the first resistor string to each of the first channel portion and the second channel portion and transferring the plurality of gamma voltages to the first channel portion and the second channel portion. The first connection line extends to the first channel portion via the first resistance corrector.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Inventors: Myeong Woo OH, Cheol Woong LEE, Byeong Jae PARK, Dong Geon LEE, Tae Woo RYU
  • Publication number: 20200027419
    Abstract: Disclosed is a source drive integrated circuit comprising: a core unit, a channel processing unit provided in each of a channel area disposed in a first side of the control area and a channel area disposed in a second side of the control area facing the first side to convert digital data, corresponding to a digital image signal transferred from the core unit, into a data voltage corresponding to an analog image signal and to output the data voltage, a resistor string provided in at least one of a pad area disposed in a third side of the control area and a pad area disposed in a fourth side of the control area facing the third side to generate a gamma voltage for converting the digital data into the data voltage and to supply the gamma voltage to the channel processing unit, and N number of gamma pads.
    Type: Application
    Filed: July 16, 2019
    Publication date: January 23, 2020
    Inventors: Myeong Woo OH, Cheol Woong LEE, Jae Sup HAN, Hee Ju KWAK, Kyu Hyeong LEE
  • Patent number: 9905922
    Abstract: Techniques for improving coverage of an antenna system are disclosed. In an aspect, a wireless device includes a 3-D antenna system to improve coverage and enhance performance. The 3-D antenna system includes antenna elements formed on multiple planes pointing in different spatial directions. Antenna elements formed on the multiple planes are associated with different antenna beams, which can provide a larger line-of-sight (LOS) coverage for the wireless device. Beamforming may be performed for the antennas on a given plane to further improve LOS coverage. Non-LOS (NLOS) coverage may also improve since antenna beams pointing in different spatial directions may result in reflected signals of higher power levels due to better signal reflection for some antenna beams.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 27, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Cheol-Woong Lee, Mohammad A. Tassoudji, Roger Brockenbrough
  • Patent number: 9331632
    Abstract: An integrated circuit is described. The integrated circuit includes millimeter-wavelength transceiver circuitry. The millimeter-wavelength transceiver circuitry includes a local oscillator that generates a millimeter-wavelength oscillator signal. The millimeter-wavelength transceiver circuitry also includes mixers coupled to the local oscillator. The mixers are within an area without millimeter-wavelength structures. The mixers convert signals based on the millimeter-wavelength oscillator signal.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 3, 2016
    Assignee: QUALCOMM Incorporated
    Inventor: Cheol-Woong Lee
  • Patent number: 9196931
    Abstract: Disclosed herein is a secondary battery pack including a battery cell, a protection circuit module (PCM) assembly having a connection member (A), an insulative mounting member having a connection member (B) embedded therein, and an insulative cap. The connection member (B) is coupled to a second electrode terminal of the battery cell by welding, such that the connection member (B) is electrically connected to the second electrode terminal of the battery cell, in a state in which the insulative mounting member is mounted on the battery cell. The connection member (A) is coupled to a first electrode terminal of the battery cell upward from a PCM, such that the connection member (A) is electrically connected to the first electrode terminal of the battery cell. The electrical connection between the PCM assembly and the connection member (B) is achieved in a physical contact fashion.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 24, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Ju-Hwan Baek, Ki Eob Moon, Soonkwang Jung, Cheol Woong Lee
  • Patent number: 9065491
    Abstract: In a particular embodiment, a method of generating in-phase (I) and quadrature-phase (Q) signals includes generating a first I output signal based on a first I input signal, a second I input signal, a first Q input signal, and a second Q input signal. The method further includes generating a second I output signal based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A first Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A second Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. According to further embodiments, an apparatus is disclosed.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: June 23, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Cheol-Woong Lee, Saihua Lin, Roger Brockenbrough
  • Publication number: 20150086835
    Abstract: Disclosed herein is a secondary battery pack including a battery cell, a protection circuit module (PCM) assembly having a connection member (A), an insulative mounting member having a connection member (B) embedded therein, and an insulative cap. The connection member (B) is coupled to a second electrode terminal of the battery cell by welding, such that the connection member (B) is electrically connected to the second electrode terminal of the battery cell, in a state in which the insulative mounting member is mounted on the battery cell. The connection member (A) is coupled to a first electrode terminal of the battery cell upward from a PCM, such that the connection member (A) is electrically connected to the first electrode terminal of the battery cell. The electrical connection between the PCM assembly and the connection member (B) is achieved in a physical contact fashion.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Ju-Hwan BAEK, Ki Eob MOON, Soonkwang JUNG, Cheol Woong LEE
  • Patent number: 8936867
    Abstract: Disclosed herein is a secondary battery pack including a battery cell, a protection circuit module (PCM) assembly having a connection member (A), an insulative mounting member having a connection member (B) embedded therein, and an insulative cap. The connection member (B) is coupled to a second electrode terminal of the battery cell by welding, such that the connection member (B) is electrically connected to the second electrode terminal of the battery cell, in a state in which the insulative mounting member is mounted on the battery cell. The connection member (A) is coupled to a first electrode terminal of the battery cell upward from a PCM, such that the connection member (A) is electrically connected to the first electrode terminal of the battery cell. The electrical connection between the PCM assembly and the connection member (B) is achieved in a physical contact fashion.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 20, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Hwan Baek, Ki Eob Moon, Soonkwang Jung, Cheol Woong Lee
  • Publication number: 20140179245
    Abstract: In a particular embodiment, a method of generating in-phase (I) and quadrature-phase (Q) signals includes generating a first I output signal based on a first I input signal, a second I input signal, a first Q input signal, and a second Q input signal. The method further includes generating a second I output signal based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A first Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A second Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. According to further embodiments, an apparatus is disclosed.
    Type: Application
    Filed: March 8, 2013
    Publication date: June 26, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Cheol-Woong Lee, Saihua Lin, Roger Brockenbrough
  • Patent number: 8729962
    Abstract: A millimeter wave power amplifier is disclosed. In an exemplary embodiment, a MM wave power amplifier (PA) includes a plurality of amplifier stages coupled together to receive a MM wave input signal and produce an amplified MM wave output signal, and one or more feedback elements coupled across the amplifier stages, each feedback element coupled across an odd number of the amplifier stages to increase an operating bandwidth of the PA.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 20, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Saihua Lin, Yongwang Ding, Cheol-Woong Lee
  • Patent number: 8703309
    Abstract: Disclosed herein is a battery pack including a battery cell, an insulative mounting member coupled to the battery cell in a specific coupling structure, a positive temperature coefficient (PTC) element having a lower connection plate directly coupled to the battery cell while the lower connection plate is not bent, and an insulative cap, whereby the number of the members for electrical connection and electrical insulation is reduced, with the result that the assembly process of the battery pack is greatly simplified, the dead space is reduced, with the result that the capacity of the battery in the same-sized battery pack is maximized, and the structural stability of the battery pack against an external force is improved.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: April 22, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Cheol Woong Lee, Ki eob Moon
  • Patent number: 8623542
    Abstract: Disclosed herein is a protection circuit module (PCM) including a protection circuit for controlling overcharge, overdischarge, and overcurrent of a battery, wherein a pair of connection members are attached to the bottom of the PCM, while the connection members are electrically connected to the protection circuit, the connection members being constructed by bending a sheet material into a predetermined shape, to form groove-shaped connection structures into which plate-shaped electrode terminals of a battery cell are inserted and coupled. Each of the connection members includes a lower connection plate, a pair of rear extensions, and front extensions.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 7, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Hwan Baek, Cheol Woong Lee
  • Publication number: 20130281029
    Abstract: An integrated circuit is described. The integrated circuit includes millimeter-wavelength transceiver circuitry. The millimeter-wavelength transceiver circuitry includes a local oscillator that generates a millimeter-wavelength oscillator signal. The millimeter-wavelength transceiver circuitry also includes mixers coupled to the local oscillator. The mixers are within an area without millimeter-wavelength structures. The mixers convert signals based on the millimeter-wavelength oscillator signal.
    Type: Application
    Filed: June 7, 2012
    Publication date: October 24, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventor: Cheol-Woong Lee
  • Patent number: 8415044
    Abstract: A label indicating exposure to water is disposed in a plastic member of the battery. The label is prevented from being separated and disappeared and from being exchanged or modified arbitrarily by a battery user by having an edge of the label molded to the battery case.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: April 9, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jae Sik Chung, Ki Eob Moon, Seog Jin Yoon, Cheol Woong Lee
  • Patent number: 8400218
    Abstract: A current mode power amplifier includes a current steering stage configured to steer a scaled current based on differential voltage inputs, a filtered current mirror connected to the current steering stage to receive the scaled current and produce a filtered output current, and a resonant load configured to receive the output current and generate an output voltage signal for transmission.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 19, 2013
    Assignee: QUALCOMM, Incorporated
    Inventors: Cheol-Woong Lee, Sunghyun Park, Jonghoon Choi
  • Publication number: 20130050056
    Abstract: Techniques for improving coverage of an antenna system are disclosed. In an aspect, a wireless device includes a 3-D antenna system to improve coverage and enhance performance. The 3-D antenna system includes antenna elements formed on multiple planes pointing in different spatial directions. Antenna elements formed on the multiple planes are associated with different antenna beams, which can provide a larger line-of-sight (LOS) coverage for the wireless device. Beamforming may be performed for the antennas on a given plane to further improve LOS coverage. Non-LOS (NLOS) coverage may also improve since antenna beams pointing in different spatial directions may result in reflected signals of higher power levels due to better signal reflection for some antenna beams.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Cheol-Woong Lee, Mohammad A. Tassoudji, Roger Brockenbrough