Patents by Inventor Changhee Kim

Changhee Kim 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).

  • Publication number: 20200321535
    Abstract: An organic electroluminescence device of an embodiment includes oppositely disposed first electrode and second electrode, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one among the organic layers includes a compound represented by Formula 1 below. Improved emission efficiency and color purity properties may be shown.
    Type: Application
    Filed: December 19, 2019
    Publication date: October 8, 2020
    Inventors: SooYoung PARK, SEHUN KIM, JiEon KWON, Hyojeong KIM, ChiHyun RYOO, Changhee LEE, HYEIN JEONG, Jongseok HAN
  • Publication number: 20200313108
    Abstract: A light emitting diode according to embodiments of the present disclosure includes a first electrode, a second electrode opposite the first electrode, an emission layer between the first electrode and the second electrode, the emission layer including a quantum dot, a first charge transfer layer between the first electrode and the emission layer, a second charge transfer layer between the second electrode and the emission layer, and an insulating layer in at least one position between the first charge transfer layer and the emission layer, and/or between the second charge transfer layer and the emission layer, wherein the insulating layer includes an inorganic material. The light emitting diode and a display device including the same show improved life characteristics and emission efficiency properties.
    Type: Application
    Filed: December 13, 2019
    Publication date: October 1, 2020
    Inventors: Choelmin JANG, Byunghyuk KWON, Changhee LEE, Myungsoo HUH, Cheollae ROH, Jaehoon KIM, Jeong Hye CHOI
  • Publication number: 20200190062
    Abstract: A novel heterocyclic compound inhibiting a cyclin-dependent kinase (CDK) and a pharmaceutical composition containing the compound as an effective ingredient are disclosed. The heterocyclic compound according to the present invention or pharmaceutically acceptable salt thereof can be effectively used in treating or preventing cancers, degenerative brain diseases, etc.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Applicant: BEYONDBIO INC.
    Inventors: Changhee MIN, Byungkyu OH, Yongeun KIM, Changmin PARK
  • Patent number: 10611754
    Abstract: The present invention relates to a novel heterocyclic compound inhibiting a cyclin-dependent kinase (CDK) and a pharmaceutical composition comprising the same as an effective ingredient. The heterocyclic compound according to the present invention or pharmaceutically acceptable salt thereof can be effectively used in treating or preventing cancers, degenerative brain diseases, etc.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: April 7, 2020
    Assignee: BEYONDBIO INC.
    Inventors: Changhee Min, Byungkyu Oh, Yongeun Kim, Changmin Park
  • Patent number: 10559673
    Abstract: A semiconductor device includes an active pillar on a substrate. A first source/drain region is disposed at a top end of the active pillar and has a greater width than the active pillar. A first insulating layer is disposed on a sidewall of the active pillar and a second insulating layer is disposed on at least a bottom surface of the first source/drain region. A gate electrode is disposed on the first insulating layer and the second insulating layer. A second source/drain region is disposed in the substrate at a bottom end of the active pillar. Methods of fabrication are also described.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: February 11, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungil Park, Changhee Kim, Yunil Lee, Mirco Cantoro, Junggun You, Donghun Lee
  • Patent number: 10446621
    Abstract: A display and degradation sensing method, includes a display panel having a plurality of pixels that each comprise an Organic Light Emitting Diode (OLED) and Thin Film Transistor (TFT). The pixels are divided into multiple pixel groups of two or more pixels, each connected to different data lines but to the same gate and sensing lines. A gate driving circuit supplies a scan control signal to the gate line. A data driving circuit selectively supplies turn-on driving data voltage and turn-off data voltage to the data lines in sync with the scan control signal; a sensing circuit outputs (i) a first sensing value based upon an OLED threshold voltage of a sensing pixel, and (ii) a second sensing value based upon a kickback current. A sensing value correction circuit determines a final sensing value for the OLED threshold voltage based on the first sensing value and the second sensing value.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: October 15, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Changhee Kim, Hyemin Park
  • Patent number: 10447445
    Abstract: In a system supporting narrowband Internet of things (NB-IoT), a terminal maps an uplink reference signal to a plurality of resource elements in a scheduled resource allocation unit, and transmits the uplink reference signal mapped to the plurality of resource elements. Here, the scheduled resource allocation unit includes a first number of contiguous slots in a time domain and a second number of contiguous subcarriers in a frequency domain.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: October 15, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ok-Sun Park, Cheulsoon Kim, Gi Yoon Park, Changhee Lee
  • Patent number: 10448399
    Abstract: Disclosed are a method for transferring data in a wireless communication system that supports device-to-device communication, and an apparatus therefor. Specifically, a method for performing, by a device, data transfer in a wireless communication system that supports device-to-device communication, comprises the steps of: broadcasting, at a first sub-carrier, a ready-to-forward (RTF) signal for advertising that the device holds data to transfer; receiving, at a second sub-carrier, a forward-request (FR) signal for requesting transfer of the data from another device; and broadcasting the data after a predetermined time, wherein the first sub-carrier and the second sub-carrier are determined on the basis of sequence numbers of the data, respectively.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: October 15, 2019
    Assignees: LG Electronics Inc., Seoul National University R&DB Foundation
    Inventors: Hakseong Kim, Daeho Kang, Saewoong Bahk, Seungbeom Jeong, Changhee Joo
  • Publication number: 20190278416
    Abstract: A touch input sensing method of an electronic device can comprise the steps of: determining whether a first input device sensed a touch input before a second input device sensed the same; performing a command such that the second input device collects pressure information in a raw data mode, if the first input device sensed the touch input before the second input device sensed the same; allow the second input device to collect the pressure information according to the command; generating a pressure table by using the collected pressure information; and mapping the pressure table and coordinate information sensed by the first input device, so as to transmit the coordinate information and the pressure information to an AP.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 12, 2019
    Inventors: Jeongjin LEE, Youngho CHO, IIjoo CHAE, Changhee HONG, Mooyoung KIM
  • Publication number: 20190189778
    Abstract: A semiconductor device includes an active pillar on a substrate. A first source/drain region is disposed at a top end of the active pillar and has a greater width than the active pillar. A first insulating layer is disposed on a sidewall of the active pillar and a second insulating layer is disposed on at least a bottom surface of the first source/drain region. A gate electrode is disposed on the first insulating layer and the second insulating layer. A second source/drain region is disposed in the substrate at a bottom end of the active pillar. Methods of fabrication are also described.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungil PARK, Changhee KIM, Yunil LEE, Mirco CANTORO, Junggun YOU, Donghun LEE
  • Publication number: 20190135786
    Abstract: The present invention relates to a novel heterocyclic compound inhibiting a cyclin-dependent kinase (CDK) and a pharmaceutical composition comprising the same as an effective ingredient. The heterocyclic compound according to the present invention or pharmaceutically acceptable salt thereof can be effectively used in treating or preventing cancers, degenerative brain diseases, etc.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Applicant: BEYONDBIO INC.
    Inventors: Changhee Min, Byungkyu Oh, Yongeun Kim, Changmin Park
  • Patent number: 10256324
    Abstract: A semiconductor device includes an active pillar on a substrate. A first source/drain region is disposed at a top end of the active pillar and has a greater width than the active pillar. A first insulating layer is disposed on a sidewall of the active pillar and a second insulating layer is disposed on at least a bottom surface of the first source/drain region. A gate electrode is disposed on the first insulating layer and the second insulating layer. A second source/drain region is disposed in the substrate at a bottom end of the active pillar. Methods of fabrication are also described.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungil Park, Changhee Kim, Yunil Lee, Mirco Cantoro, Junggun You, Donghun Lee
  • Publication number: 20180248018
    Abstract: A semiconductor device includes an active pillar on a substrate. A first source/drain region is disposed at a top end of the active pillar and has a greater width than the active pillar. A first insulating layer is disposed on a sidewall of the active pillar and a second insulating layer is disposed on at least a bottom surface of the first source/drain region. A gate electrode is disposed on the first insulating layer and the second insulating layer. A second source/drain region is disposed in the substrate at a bottom end of the active pillar. Methods of fabrication are also described.
    Type: Application
    Filed: July 31, 2017
    Publication date: August 30, 2018
    Inventors: Sungil Park, Changhee Kim, Yunil Lee, Mirco Cantoro, Junggun You, Donghun Lee
  • Publication number: 20180193396
    Abstract: The present invention relates to a composition for preventing and treating muscle diseases or improving muscular function, containing a Platycodon grandiflorum extract. More specifically, the present invention relates to: a pharmaceutical composition for preventing and treating muscle diseases, containing a Platycodon grandiflorum extract; a food composition for preventing muscle diseases or improving muscular function; or a cosmetic for improving muscular function. The Platycodon grandiflorum extract of the present invention increases muscle formation by inducing muscular protein synthesis and muscle cell differentiation. Therefore, the extract is a natural product so as to be used safely without side effects, thereby being usable as an active ingredient of a pharmaceutical, food, or cosmetic composition exhibiting an excellent effect in preventing and treating muscle diseases or improving muscular function.
    Type: Application
    Filed: May 26, 2016
    Publication date: July 12, 2018
    Inventors: Jae-Kwan Hwang, Mi-Bo Kim, Changhee Kim, Doun Kim, Heechul Chung
  • Publication number: 20180153852
    Abstract: The present invention relates to a composition for preventing and treating muscle diseases or improving muscular function, containing, as an active ingredient, at least one selected from the group consisting of morusin, kuwanon G, and a Mori Cortex Radicis extract. The Mori Cortex Radicis extract, morusin, or kuwanon G, according to the present invention, has an effect of remarkably enhancing muscular function by increasing the expression of p-mTOR protein involved in muscular protein synthesis, inhibiting the expression of mRNAs of MuRF-1 and atrogin-1 involved in muscular protein degradation, and increasing the expression of mRNAs of MyoD and myogenin involved in muscular differentiation. In addition, the present invention is a natural product so as to be used safely without side effects, thereby being usable in drugs, food, or cosmetics.
    Type: Application
    Filed: November 27, 2017
    Publication date: June 7, 2018
    Inventors: Jae-Kwan HWANG, Mi-Bo KIM, Changhee KIM, Doun KIM, Heechul CHUNG
  • Publication number: 20180061913
    Abstract: A display and degradation sensing method, includes a display panel having a plurality of pixels that each comprise an Organic Light Emitting Diode (OLED) and Thin Film Transistor (TFT). The pixels are divided into multiple pixel groups of two or more pixels, each connected to different data lines but to the same gate and sensing lines. A gate driving circuit supplies a scan control signal to the gate line. A data driving circuit selectively supplies turn-on driving data voltage and turn-off data voltage to the data lines in sync with the scan control signal; a sensing circuit outputs (i) a first sensing value based upon an OLED threshold voltage of a sensing pixel, and (ii) a second sensing value based upon a kickback current. A sensing value correction circuit determines a final sensing value for the OLED threshold voltage based on the first sensing value and the second sensing value.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Inventors: Changhee KIM, Hyemin PARK
  • Patent number: 9449560
    Abstract: An organic light emitting display includes a display panel including a plurality of pixels, each of the plurality of pixels including an organic light emitting diode (OLED) and a driving thin film transistor (TFT) to control an emission amount of the OLED, the plurality of pixels connected to respective sensing lines; and at least one sensing unit connected to a corresponding one of the pixels through the respective sensing line, the at least one sensing unit configured to sense an amount of carriers accumulated in a parasitic capacitor of the OLED of the corresponding one of the pixels when a driving current flows in the OLED, the at least one sensing unit thereby sensing a degradation of the OLED.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 20, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Hyemi Oh, Hunki Shin, Changhee Kim
  • Patent number: 9396675
    Abstract: A method for sensing degradation of an organic light emitting display includes an initialization step for applying a sensing data voltage to a gate node of a driving TFT and applying an initialization voltage to a source node of the driving TFT, a boosting step for floating the gate node and the source node of the driving TFT and applying a drain-to-source current of the driving TFT to an organic element, a sensing step for again applying the initialization voltage to the source node of the driving TFT, setting a gate-to-source voltage of the driving TFT depending on a degradation degree of the organic element, and storing the drain-to-source current of the driving TFT determined by the set gate-to-source voltage in a line capacitor, and a sampling step for outputting a voltage stored in the line capacitor as a sensing voltage.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 19, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Changhee Kim, Kilhwan Oh, Hunki Shin
  • Publication number: 20160071445
    Abstract: A method for sensing degradation of an organic light emitting display includes an initialization step for applying a sensing data voltage to a gate node of a driving TFT and applying an initialization voltage to a source node of the driving TFT, a boosting step for floating the gate node and the source node of the driving TFT and applying a drain-to-source current of the driving TFT to an organic element, a sensing step for again applying the initialization voltage to the source node of the driving TFT, setting a gate-to-source voltage of the driving TFT depending on a degradation degree of the organic element, and storing the drain-to-source current of the driving TFT determined by the set gate-to-source voltage in a line capacitor, and a sampling step for outputting a voltage stored in the line capacitor as a sensing voltage.
    Type: Application
    Filed: December 29, 2014
    Publication date: March 10, 2016
    Inventors: Changhee KIM, Kilhwan OH, Hunki SHIN
  • Publication number: 20160012798
    Abstract: An organic light emitting display includes a display panel including a plurality of pixels, each of the plurality of pixels including an organic light emitting diode (OLED) and a driving thin film transistor (TFT) to control an emission amount of the OLED, the plurality of pixels connected to respective sensing lines; and at least one sensing unit connected to a corresponding one of the pixels through the respective sensing line, the at least one sensing unit configured to sense an amount of carriers accumulated in a parasitic capacitor of the OLED of the corresponding one of the pixels when a driving current flows in the OLED, the at least one sensing unit thereby sensing a degradation of the OLED.
    Type: Application
    Filed: December 29, 2014
    Publication date: January 14, 2016
    Applicant: LG Display Co., Ltd.
    Inventors: Hyemi OH, Hunki SHIN, Changhee KIM