Patents by Inventor Hyung Uk Jang

Hyung Uk Jang 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: 12108649
    Abstract: The present disclosure relates to a display panel and a display device using the same, and includes a first region where a plurality of pixel groups are disposed; and a second region where a plurality of pixel groups and a plurality of light transmitting parts are disposed. The plurality of pixel groups disposed in the second region are disposed between the light transmitting parts. An aspect ratio of each of the pixel groups disposed in the second region is different from that of each of the pixel groups disposed in the first region. Each of the pixel groups of the second region includes the same number of sub-pixels as each of the pixel groups of the first region.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: October 1, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Young Sung Cho, Hyung Uk Jang, Sung Woo Jun
  • Patent number: 12095008
    Abstract: A light emitting element includes a first semiconductor layer including a first type of semiconductor, the first semiconductor layer including a 1-1-th semiconductor layer and a 1-2-th semiconductor layer, which are arranged in a length direction of the light emitting element; a second semiconductor layer including a second type of semiconductor different from the first type; an active layer disposed between the 1-2-th semiconductor layer and the second semiconductor layer; and an intermediate layer disposed between the 1-1-th semiconductor layer and the 1-2-th semiconductor layer and having a porous structure.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: September 17, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Chul Sim, Hyung Rae Cha, Dong Uk Kim, Sung Ae Jang, Ji Hyun Ham
  • Patent number: 12060485
    Abstract: The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: August 13, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Samyang Corporation
    Inventors: Seul Yi, Boo Youn An, Dae Sik Kim, Kyeong Hoon Jang, Min Woo Kwon, In Soo Han, Jin Gi Ahn, Do Young Bae, Hyung Jin Roh, Tae Jin An, Jung Kyu Han, Chul Jin Jo, Si Uk Cheon, Suk Woo Kang
  • Publication number: 20240266332
    Abstract: A light-emitting element includes a first end portion and a second end portion disposed in a length direction of the light-emitting element, a first electrode corresponding to the first end portion, a first semiconductor layer on the first electrode, an active layer on the first semiconductor layer, a second semiconductor layer on the active layer, and a second electrode on the second semiconductor layer and corresponding to the second end portion. The second electrode includes a first layer on the first semiconductor layer, and a second layer on the first layer. The first semiconductor layer includes a p-type semiconductor layer doped with a p-type dopant. The second semiconductor layer includes an n-type semiconductor layer doped with an n-type dopant. The first electrode is in ohmic contact with the first semiconductor layer. The second electrode is in ohmic contact with the second semiconductor layer.
    Type: Application
    Filed: March 28, 2024
    Publication date: August 8, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyung Rae CHA, Dong Uk KIM, Sung Ae JANG, Ji Hyun HAM
  • Publication number: 20240040879
    Abstract: An embodiment discloses a display panel and a display device including the same. The display panel includes a first display region in which a plurality of pixels are disposed, and a second display region including a plurality of pixel regions, in which a plurality of pixels are disposed, and a plurality of light-transmitting regions disposed between the plurality of pixel regions, wherein the second display region includes a plurality of first pixels disposed in the plurality of pixel regions, a plurality of second pixels disposed in the plurality of light-transmitting regions, and a plurality of first electrodes extending from the plurality of pixel regions to the plurality of light-transmitting regions to electrically connect the plurality of first pixels to the plurality of second pixels.
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Inventors: Hyung Uk Jang, Chul Nam
  • Patent number: 11818934
    Abstract: An embodiment discloses a display panel and a display device including the same. The display panel includes a first display region in which a plurality of pixels are disposed, and a second display region including a plurality of pixel regions, in which a plurality of pixels are disposed, and a plurality of light-transmitting regions disposed between the plurality of pixel regions, wherein the second display region includes a plurality of first pixels disposed in the plurality of pixel regions, a plurality of second pixels disposed in the plurality of light-transmitting regions, and a plurality of first electrodes extending from the plurality of pixel regions to the plurality of light-transmitting regions to electrically connect the plurality of first pixels to the plurality of second pixels.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: November 14, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung Uk Jang, Chul Nam
  • Patent number: 11367381
    Abstract: An electroluminescent display device has a plurality of pixels and each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, an internal compensator comprising a first capacitor connected between the first node and a second node, and a second capacitor connected between the second node and an input terminal for the high-level source voltage, the internal compensator controlling a threshold voltage of the driving transistor with reference to a first scan signal, a second scan signal opposite to the first scan signal in phase, a third scan signal lagging the first scan signal in phase, a fourth scan signal leading the first scan signal in phase, and an emission signal, and a light emitting element connected between a fifth node to be connected to the fourth node and an inp
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: June 21, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Young-Sung Cho, Chui Nam, Byeong-Seong So, Hyung-Uk Jang
  • Publication number: 20220123071
    Abstract: The present disclosure relates to a display panel and a display device using the same, and includes a first region where a plurality of pixel groups are disposed; and a second region where a plurality of pixel groups and a plurality of light transmitting parts are disposed. The plurality of pixel groups disposed in the second region are disposed between the light transmitting parts. An aspect ratio of each of the pixel groups disposed in the second region is different from that of each of the pixel groups disposed in the first region. Each of the pixel groups of the second region includes the same number of sub-pixels as each of the pixel groups of the first region.
    Type: Application
    Filed: June 25, 2021
    Publication date: April 21, 2022
    Inventors: Young Sung Cho, Hyung Uk Jang, Sung Woo Jun
  • Publication number: 20220069028
    Abstract: An embodiment discloses a display panel and a display device including the same. The display panel includes a first display region in which a plurality of pixels are disposed, and a second display region including a plurality of pixel regions, in which a plurality of pixels are disposed, and a plurality of light-transmitting regions disposed between the plurality of pixel regions, wherein the second display region includes a plurality of first pixels disposed in the plurality of pixel regions, a plurality of second pixels disposed in the plurality of light-transmitting regions, and a plurality of first electrodes extending from the plurality of pixel regions to the plurality of light-transmitting regions to electrically connect the plurality of first pixels to the plurality of second pixels.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 3, 2022
    Inventors: Hyung Uk Jang, Chul Nam
  • Patent number: 11232756
    Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, to generate pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator including first and second capacitors, and switching transistors, and a kick-back compensation transistor to apply a DC voltage higher than an initialization voltage to the first node in a kick-back compensation period between an initialization period and a data writing period.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: January 25, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Uk Jang, Chul Nam, Byeong-Seong So, Young-Sung Cho
  • Patent number: 11195461
    Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator controlling voltages of the first to fourth nodes in accordance with operations of a plurality of switching transistors in an initialization period, a data writing period and an emission period, and a refresh transistor configured to apply the high-level source voltage to the second node in accordance with a scan signal in a refresh period preceding an initialization period.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: December 7, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Uk Jang, Byeong-Seong So, Young-Sung Cho
  • Publication number: 20210201759
    Abstract: An electroluminescent display device has a plurality of pixels and each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, an internal compensator comprising a first capacitor connected between the first node and a second node, and a second capacitor connected between the second node and an input terminal for the high-level source voltage, the internal compensator controlling a threshold voltage of the driving transistor with reference to a first scan signal, a second scan signal opposite to the first scan signal in phase, a third scan signal lagging the first scan signal in phase, a fourth scan signal leading the first scan signal in phase, and an emission signal, and a light emitting element connected between a fifth node to be connected to the fourth node and an inp
    Type: Application
    Filed: December 28, 2020
    Publication date: July 1, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Young-Sung Cho, Chul Nam, Byeong-Seong So, Hyung-Uk Jang
  • Publication number: 20210201782
    Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator controlling voltages of the first to fourth nodes in accordance with operations of a plurality of switching transistors in an initialization period, a data writing period and an emission period, and a refresh transistor configured to apply the high-level source voltage to the second node in accordance with a scan signal in a refresh period preceding an initialization period.
    Type: Application
    Filed: December 9, 2020
    Publication date: July 1, 2021
    Inventors: Hyung-Uk JANG, Byeong-Seong SO, Young-Sung CHO
  • Publication number: 20210201827
    Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, to generate pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator including first and second capacitors, and switching transistors, and a kick-back compensation transistor to apply a DC voltage higher than an initialization voltage to the first node in a kick-back compensation period between an initialization period and a data writing period.
    Type: Application
    Filed: December 9, 2020
    Publication date: July 1, 2021
    Inventors: Hyung-Uk JANG, Chul NAM, Byeong-Seong SO, Young-Sung CHO
  • Patent number: 9671899
    Abstract: In touch panel display device, a first touch electrode group has a first plurality of touch electrodes and a second touch electrode group has a second plurality of touch electrodes. A first current supplier circuit supplies a first current during a first current supply period to the first touch electrode group, and the second current supplier circuit supplies a second current during a second current supply period to the second touch electrode group. The sensing signal receiver circuit holds a first touch voltage for the first touch electrode group following the first current supply period, and holds the second touch voltage for the second touch electrode group following the second current supply period. The sensing signal receiver determines based on the first held touch voltage and the second held touch voltage, whether a touch occurred in each of the first touch electrode group and the second touch electrode group.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: June 6, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Min Sung Kim, Hyung Uk Jang, Jin Soo Chung, Yoonion Hwang
  • Patent number: 9552105
    Abstract: A display device having a multi-touch recognition function includes an integration module having a plurality of cameras integrated at an edge of a display panel; and a processor that detects a touch area using at least first and second images captured by the plurality of cameras, respectively.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: January 24, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Yeon Shim Shim, Hyung Uk Jang, Sang Hyuck Bae
  • Publication number: 20160188081
    Abstract: In touch panel display device, a first touch electrode group has a first plurality of touch electrodes and a second touch electrode group has a second plurality of touch electrodes. A first current supplier circuit supplies a first current during a first current supply period to the first touch electrode group, and the second current supplier circuit supplies a second current during a second current supply period to the second touch electrode group. The sensing signal receiver circuit holds a first touch voltage for the first touch electrode group following the first current supply period, and holds the second touch voltage for the second touch electrode group following the second current supply period. The sensing signal receiver determines based on the first held touch voltage and the second held touch voltage, whether a touch occurred in each of the first touch electrode group and the second touch electrode group.
    Type: Application
    Filed: May 29, 2015
    Publication date: June 30, 2016
    Inventors: Min Sung KIM, Hyung Uk JANG, Jin Soo CHUNG, Yoonion HWANG
  • Patent number: 9213481
    Abstract: Disclosed is a method for precisely judging the number of touches. The method includes a step A of reading a touch sensing signal sensed by an ith infrared ray sensor module located at an ith corner (i being a natural number not exceeding 3) of a touch panel, a step B of defining a portion of the touch sensing signal having a signal intensity lower than a predetermined touch recognition threshold signal as a touch recognition signal corresponding to the touches, and a step C of, when the touch recognition signal is recognized as representing one touch and the length of the overall section of the touch recognition signal is within a critical range as a result of analysis of the touch recognition signal, finally judging whether or not the touch recognition signal is recognized as one touch or two touches through re-analysis of the touch recognition signal.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: December 15, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hyung-Uk Jang, Jong-Hyun Han
  • Patent number: 8970554
    Abstract: An assembly includes a display panel having four corners, an optical sensing frame having at least three optical modules mounted adjacent a surface of the display panel, where the optical modules are located at the corners of the display panel and optical reflectors extending substantially along an entire length of each of four sides of the display panel, an optical sensing frame controller driving the optical sensing frame, and a display panel controller on a single circuit board with the optical sensing frame controller.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Uk Jang, Min-Ho Sohn, Byung-Chun Yu, Jin-Hyuk Jang
  • Patent number: 8830208
    Abstract: A display module including a touch panel configured to be touched so as to input information, a liquid crystal display panel disposed below the touch panel and configured to display the information to be touched on the touch panel, a plurality of emitting light units configured to emit infrared light formed in at least two sides of the touch panel, a plurality of image sensors disposed below the liquid crystal panel and configured to detect infrared rays redirected through the liquid crystal panel towards the image sensors based on a touching of the touch panel, and a controller configured to determine a portion of the touch panel that is touched based on signals received from the plurality of image sensors.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Min Ho Sohn, Jong Seong Choi, Hyung Uk Jang, Sang Rae Lee, Sang Hyuck Bae, Byung Chun Yu