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).
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Patent number: 12108649Abstract: 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: GrantFiled: June 25, 2021Date of Patent: October 1, 2024Assignee: LG Display Co., Ltd.Inventors: Young Sung Cho, Hyung Uk Jang, Sung Woo Jun
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Patent number: 12095008Abstract: 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: GrantFiled: July 1, 2021Date of Patent: September 17, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young Chul Sim, Hyung Rae Cha, Dong Uk Kim, Sung Ae Jang, Ji Hyun Ham
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Patent number: 12060485Abstract: 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: GrantFiled: December 1, 2020Date of Patent: August 13, 2024Assignees: Hyundai Motor Company, Kia Motors Corporation, Samyang CorporationInventors: 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
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Publication number: 20240266332Abstract: 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: ApplicationFiled: March 28, 2024Publication date: August 8, 2024Applicant: Samsung Display Co., LTD.Inventors: Hyung Rae CHA, Dong Uk KIM, Sung Ae JANG, Ji Hyun HAM
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Publication number: 20240040879Abstract: 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: ApplicationFiled: October 6, 2023Publication date: February 1, 2024Inventors: Hyung Uk Jang, Chul Nam
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Patent number: 11818934Abstract: 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: GrantFiled: August 25, 2021Date of Patent: November 14, 2023Assignee: LG Display Co., Ltd.Inventors: Hyung Uk Jang, Chul Nam
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Patent number: 11367381Abstract: 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 inpType: GrantFiled: December 28, 2020Date of Patent: June 21, 2022Assignee: LG DISPLAY CO., LTD.Inventors: Young-Sung Cho, Chui Nam, Byeong-Seong So, Hyung-Uk Jang
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Publication number: 20220123071Abstract: 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: ApplicationFiled: June 25, 2021Publication date: April 21, 2022Inventors: Young Sung Cho, Hyung Uk Jang, Sung Woo Jun
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Publication number: 20220069028Abstract: 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: ApplicationFiled: August 25, 2021Publication date: March 3, 2022Inventors: Hyung Uk Jang, Chul Nam
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Patent number: 11232756Abstract: 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: GrantFiled: December 9, 2020Date of Patent: January 25, 2022Assignee: LG Display Co., Ltd.Inventors: Hyung-Uk Jang, Chul Nam, Byeong-Seong So, Young-Sung Cho
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Patent number: 11195461Abstract: 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: GrantFiled: December 9, 2020Date of Patent: December 7, 2021Assignee: LG Display Co., Ltd.Inventors: Hyung-Uk Jang, Byeong-Seong So, Young-Sung Cho
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Publication number: 20210201759Abstract: 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 inpType: ApplicationFiled: December 28, 2020Publication date: July 1, 2021Applicant: LG Display Co., Ltd.Inventors: Young-Sung Cho, Chul Nam, Byeong-Seong So, Hyung-Uk Jang
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Publication number: 20210201782Abstract: 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: ApplicationFiled: December 9, 2020Publication date: July 1, 2021Inventors: Hyung-Uk JANG, Byeong-Seong SO, Young-Sung CHO
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Publication number: 20210201827Abstract: 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: ApplicationFiled: December 9, 2020Publication date: July 1, 2021Inventors: Hyung-Uk JANG, Chul NAM, Byeong-Seong SO, Young-Sung CHO
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Patent number: 9671899Abstract: 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: GrantFiled: May 29, 2015Date of Patent: June 6, 2017Assignee: LG Display Co., Ltd.Inventors: Min Sung Kim, Hyung Uk Jang, Jin Soo Chung, Yoonion Hwang
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Patent number: 9552105Abstract: 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: GrantFiled: May 10, 2007Date of Patent: January 24, 2017Assignee: LG Display Co., Ltd.Inventors: Yeon Shim Shim, Hyung Uk Jang, Sang Hyuck Bae
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Publication number: 20160188081Abstract: 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: ApplicationFiled: May 29, 2015Publication date: June 30, 2016Inventors: Min Sung KIM, Hyung Uk JANG, Jin Soo CHUNG, Yoonion HWANG
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Patent number: 9213481Abstract: 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: GrantFiled: October 5, 2011Date of Patent: December 15, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Hyung-Uk Jang, Jong-Hyun Han
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Patent number: 8970554Abstract: 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: GrantFiled: December 22, 2010Date of Patent: March 3, 2015Assignee: LG Display Co., Ltd.Inventors: Hyung-Uk Jang, Min-Ho Sohn, Byung-Chun Yu, Jin-Hyuk Jang
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Patent number: 8830208Abstract: 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: GrantFiled: October 1, 2008Date of Patent: September 9, 2014Assignee: LG Display Co., Ltd.Inventors: Min Ho Sohn, Jong Seong Choi, Hyung Uk Jang, Sang Rae Lee, Sang Hyuck Bae, Byung Chun Yu