Patents by Inventor Hun Jeoung
Hun Jeoung 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: 10338727Abstract: Present invention is related to a display device and a driving method thereof, and particularly, to a display device and a driving method thereof, which control an output timing of a scan signal output to gate lines by using two or more external start signals having different timings.Type: GrantFiled: September 9, 2016Date of Patent: July 2, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Sang Hee Yu, Hun Jeoung, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang
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Patent number: 10332467Abstract: Present invention relates to a display device and a driving method thereof. In particular, the present invention is to provide a display device and a driving method thereof, which block at least one of scan signals output from gate lines according to an enable signal.Type: GrantFiled: March 10, 2015Date of Patent: June 25, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Bo Sun Lee, Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Sung Wook Chang
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Patent number: 10209577Abstract: A liquid crystal display panel in one example includes first and second substrates facing each other; a sealant disposed between the first and second substrates, and corresponding to a perimeter of a display area; a first protective layer disposed over the first substrate; a second protective layer disposed over the first protective layer; and an adhesive groove part overlapping the sealant, and including a first contact groove passing through the first and second protective layers, and a second contact groove disposed adjacent to the first contact groove and passing through the second protective layer. Due to the adhesive groove part, the sealant can adhere to each of the first and second protective layers, whereby the attachment force of the liquid crystal display panel can be enhanced.Type: GrantFiled: October 25, 2017Date of Patent: February 19, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Jaemin Seok, Hun Jeoung
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Patent number: 10007154Abstract: Provided is a display device. The display device includes: a TFT array substrate; a column spacer on the TFT array substrate; and a non-light transmissive material layer under the column spacer, the non-light transmissive material layer being in contact with a lower surface of the column spacer and formed of a non-light transmissive material having a different refractive index from the column spacer.Type: GrantFiled: April 27, 2016Date of Patent: June 26, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Jeonghwan Park, Hun Jeoung, Sukho Cho
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Patent number: 9997112Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.Type: GrantFiled: March 10, 2015Date of Patent: June 12, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang
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Publication number: 20180120604Abstract: A liquid crystal display panel in one example includes first and second substrates facing each other; a sealant disposed between the first and second substrates, and corresponding to a perimeter of a display area; a first protective layer disposed over the first substrate; a second protective layer disposed over the first protective layer; and an adhesive groove part overlapping the sealant, and including a first contact groove passing through the first and second protective layers, and a second contact groove disposed adjacent to the first contact groove and passing through the second protective layer. Due to the adhesive groove part, the sealant can adhere to each of the first and second protective layers, whereby the attachment force of the liquid crystal display panel can be enhanced.Type: ApplicationFiled: October 25, 2017Publication date: May 3, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Jaemin SEOK, Hun JEOUNG
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Patent number: 9774325Abstract: A gate driver and a display device including the gate driver are provided which can prevent an abnormal output of a gate-high voltage from a stage by stably maintaining a discharge potential of a pull-up node. The gate driver includes a plurality of stages, and each stage includes a pull-up transistor that outputs a clock signal input to a first clock terminal to an output terminal depending on a voltage of a pull-up node; a pull-down transistor that outputs a first source voltage input to a first source voltage terminal to the output terminal depending on a voltage of a pull-down node; and a first noise removing unit that supplies a gate-off voltage to the pull-up node to remove noise of the pull-up node in response to the clock signal input to the first clock terminal.Type: GrantFiled: December 15, 2015Date of Patent: September 26, 2017Assignee: LG Display Co., Ltd.Inventors: DongSoo Kim, Hun Jeoung, SangHee Yu, SungHyun Cho, BoSun Lee, Sungwook Chang
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Patent number: 9754551Abstract: A display panel and a method of driving the same are disclosed. The display panel includes a shift register with a plurality of stages configured to shift and to output a scan pulse for a plurality of scan lines. Each stage includes a pull-up transistor and a pull-down transistor coupled in series and defining an output node therebetween, a driver with a first node coupled to a gate electrode of the pull-up transistor and a second node coupled to a gate electrode of the pull-down transistor; and a node controller coupled to the first node, the second node, and the output node. In each stage, the node controller is configured to selectively apply a reference voltage at the first node and the second node in response to a control signal.Type: GrantFiled: November 30, 2015Date of Patent: September 5, 2017Assignee: LG Display Co., Ltd.Inventors: Hun Jeoung, Sanghee Yu, Sunghyun Cho, Bosun Lee, Byoungwoo Kim, Sungwook Chang
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Publication number: 20170076683Abstract: Present invention relates to a display device and a driving method thereof. In particular, the present invention is to provide a display device and a driving method thereof, which block at least one of scan signals output from gate lines according to an enable signal.Type: ApplicationFiled: March 10, 2015Publication date: March 16, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Bo Sun LEE, Hun JEOUNG, Sang Hee YU, Sung Hyun CHO, Sung Wook CHANG
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Publication number: 20170052635Abstract: Present invention is related to a display device and a driving method thereof, and particularly, to a display device and a driving method thereof, which control an output timing of a scan signal output to gate lines by using two or more external start signals having different timings.Type: ApplicationFiled: September 9, 2016Publication date: February 23, 2017Inventors: Sang Hee YU, Hun JEOUNG, Sung Hyun CHO, Bo Sun LEE, Sung Wook CHANG
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Publication number: 20170025068Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.Type: ApplicationFiled: March 10, 2015Publication date: January 26, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Hun JEOUNG, Sang Hee YU, Sung Hyun CHO, Bo Sun LEE, Sung Wook CHANG
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Patent number: 9502393Abstract: Disclosed is a display device including features that suppresses threshold voltage variation among the oxide thin-film transistors of an array substrate and a method for manufacturing the same. The display device includes a first COG block including sub-pixels configured to receive an output signal from a first drive integrated circuit positioned in a first COG area; a second COG block including sub-pixels configured to receive an output signal from a second drive integrated circuit positioned in a second COG area; and an equipotential line extended from the first COG area to the second COG area.Type: GrantFiled: August 28, 2015Date of Patent: November 22, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Mihee Shin, Hun Jeoung, Mingyeong Kim
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Publication number: 20160320653Abstract: Provided is a display device. The display device includes: a TFT array substrate; a column spacer on the TFT array substrate; and a non-light transmissive material layer under the column spacer, the non-light transmissive material layer being in contact with a lower surface of the column spacer and formed of a non-light transmissive material having a different refractive index from the column spacer.Type: ApplicationFiled: April 27, 2016Publication date: November 3, 2016Inventors: Jeonghwan Park, Hun JEOUNG, Sukho CHO
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Patent number: 9478612Abstract: A display panel including an oxide thin film transistor is disclosed. In the oxide thin film transistor, a part of the active layer between a source region and a drain region is covered with an etch stopper layer, and the etch stopper layer is partially covered by the first electrode and the second electrode of the oxide thin film transistor. The length in which the etch stopper layer is overlapped by the second electrode is greater than the length in which the etch stopper layer is overlapped by the first electrode to suppress threshold voltage shift in the oxide thin film transistor.Type: GrantFiled: July 31, 2015Date of Patent: October 25, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Mingyeong Kim, Hun Jeoung, Hyuncheol Jang, Moon Seok Jung
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Publication number: 20160182042Abstract: A gate driver and a display device including the gate driver are provided which can prevent an abnormal output of a gate-high voltage from a stage by stably maintaining a discharge potential of a pull-up node. The gate driver includes a plurality of stages, and each stage includes a pull-up transistor that outputs a clock signal input to a first clock terminal to an output terminal depending on a voltage of a pull-up node; a pull-down transistor that outputs a first source voltage input to a first source voltage terminal to the output terminal depending on a voltage of a pull-down node; and a first noise removing unit that supplies a gate-off voltage to the pull-up node to remove noise of the pull-up node in response to the clock signal input to the first clock terminal.Type: ApplicationFiled: December 15, 2015Publication date: June 23, 2016Applicant: LG Display Co., Ltd.Inventors: DongSoo Kim, Hun Jeoung, SangHee Yu, SungHyun Cho, BoSun Lee, Sungwook Chang
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Publication number: 20160155409Abstract: A display panel and a method of driving the same are disclosed. The display panel includes a shift register with a plurality of stages configured to shift and to output a scan pulse for a plurality of scan lines. Each stage includes a pull-up transistor and a pull-down transistor coupled in series and defining an output node therebetween, a driver with a first node coupled to a gate electrode of the pull-up transistor and a second node coupled to a gate electrode of the pull-down transistor; and a node controller coupled to the first node, the second node, and the output node. In each stage, the node controller is configured to selectively apply a reference voltage at the first node and the second node in response to a control signal.Type: ApplicationFiled: November 30, 2015Publication date: June 2, 2016Applicant: LG Display Co., Ltd.Inventors: Hun JEOUNG, Sanghee YU, Sunghyun CHO, Bosun LEE, Byoungwoo KIM, Sungwook CHANG
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Publication number: 20160064364Abstract: Disclosed is a display device including features that suppresses threshold voltage variation among the oxide thin-film transistors of an array substrate and a method for manufacturing the same. The display device includes a first COG block including sub-pixels configured to receive an output signal from a first drive integrated circuit positioned in a first COG area; a second COG block including sub-pixels configured to receive an output signal from a second drive integrated circuit positioned in a second COG area; and an equipotential line extended from the first COG area to the second COG area.Type: ApplicationFiled: August 28, 2015Publication date: March 3, 2016Inventors: Mihee SHIN, Hun JEOUNG, Mingyeong KIM
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Publication number: 20160035830Abstract: A display panel including an oxide thin film transistor is disclosed. In the oxide thin film transistor, a part of the active layer between a source region and a drain region is covered with an etch stopper layer, and the etch stopper layer is partially covered by the first electrode and the second electrode of the oxide thin film transistor. The length in which the etch stopper layer is overlapped by the second electrode is greater than the length in which the etch stopper layer is overlapped by the first electrode to suppress threshold voltage shift in the oxide thin film transistor.Type: ApplicationFiled: July 31, 2015Publication date: February 4, 2016Inventors: Mingyeong KIM, Hun JEOUNG, Hyuncheol JANG, Moon Seok JUNG
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Patent number: 9018625Abstract: An inverter includes a first N type oxide transistor operated in a depletion mode; and a second N type oxide transistor operated in a normal mode or enhancement mode, wherein an overlap area between an etch stop layer and a drain electrode of the first N type oxide transistor is greater than an overlap area between the etch stop layer and a source electrode of the first N type oxide transistor.Type: GrantFiled: December 20, 2013Date of Patent: April 28, 2015Assignee: LG Display Co., Ltd.Inventor: Hun Jeoung
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Patent number: 8847294Abstract: There are provided a substrate including an oxide TFT having improved initial threshold voltage degradation characteristics included in a driving circuit of a liquid crystal display (LCD) device, a method for fabricating the same, and a driving circuit for an LCD device using the same. The substrate including an oxide thin film transistor (TFT) includes: a base substrate divided into a pixel region and a driving circuit region; and a plurality of TFTs formed on the base substrate, wherein an initial threshold voltage of at least one of the plurality of TFTs formed in the driving circuit region is positive-shifted to have a predetermined level.Type: GrantFiled: December 27, 2012Date of Patent: September 30, 2014Assignee: LG Display Co., Ltd.Inventors: TaeSang Kim, Hun Jeoung