Patents by Inventor Hyoung-Su Kim
Hyoung-Su 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).
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Publication number: 20210193785Abstract: An organic light emitting display apparatus includes an organic light emitting display panel including a display area, including a transparent area and an opaque area, and a non-display area, a gate driver sequentially supplying a gate pulse to a plurality of gate lines included in the organic light emitting display panel, and an initialization unit transferring gate pulses and/or initialization control signals, output from the gate driver, to a plurality of transparent area gate lines. A camera photographing a region in a forward direction with respect to the organic light emitting display panel is provided in the transparent area of a rear surface of the organic light emitting display panel. A first pixel driving circuit provided in the transparent area includes two transistors, and a second pixel driving circuit provided in the opaque area includes at least three transistors.Type: ApplicationFiled: December 15, 2020Publication date: June 24, 2021Applicant: LG Display Co., Ltd.Inventors: Hyoung-Su KIM, HyeSeon EOM, DooHyun YOON
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Patent number: 11037486Abstract: A pixel is provided that has an internal compensation circuit capable of compensating for a threshold voltage of a driving transistor without loss of a data voltage and a light emitting display apparatus including the same. The pixel includes a light emitting device and a pixel circuit connected to the light emitting device. The pixel circuit includes a driving transistor including first and second gate electrodes, a source electrode, and a drain electrode, a first capacitor formed between the first gate electrode and the source electrode of the driving transistor, a second capacitor formed between the second gate electrode and the source electrode of the driving transistor, and a switching circuit connected to the first and second gate electrodes, the source electrode, and the drain electrode of the driving transistor and operating in order of a first to a fourth period.Type: GrantFiled: October 23, 2019Date of Patent: June 15, 2021Assignee: LG Display Co., Ltd.Inventor: Hyoung-Su Kim
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Publication number: 20210111236Abstract: The present disclosure discloses an organic light emitting display device. The organic light emitting display device includes a substrate, a driving transistor, a reflection electrode, a dielectric layer, a first and second electrode, and an organic light emitting layer. The driving transistor is in each of a plurality of pixel regions which are defined on the substrate. The reflection electrode is on the driving transistor, and is electrically connected to a gate electrode of the driving transistor. The dielectric layer is on the reflection electrode. The first electrode is on the dielectric layer, and is electrically connected to a source electrode of the driving transistor, and faces the reflection electrode. The organic light emitting layer is on the first electrode. The second electrode is on the organic light emitting layer.Type: ApplicationFiled: October 8, 2020Publication date: April 15, 2021Inventors: Doo-Hyun YOON, Hyoung-Su KIM, Hye-Seon EOM, Jong-Hyeok IM, Gyung-Min KIM
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Publication number: 20200212154Abstract: A display device can include a first sub pixel disposed on a substrate; a second sub pixel disposed on the substrate, the second sub pixel being adjacent to the first sub pixel; a first electrode disposed in each of the first and second sub pixels; a first capacitor disposed on the first electrode in each of the first and second sub pixels, the first capacitor being located at a periphery of the corresponding first electrode; an emission layer disposed on the first electrode in each of the first and second sub pixels; and a second electrode disposed on the emission layer in each of the first and second sub pixels.Type: ApplicationFiled: December 18, 2019Publication date: July 2, 2020Applicant: LG Display Co., Ltd.Inventors: Hyoung-Su KIM, Jonghyeok IM, Gyungmin KIM
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Publication number: 20200135091Abstract: A pixel is provided that has an internal compensation circuit capable of compensating for a threshold voltage of a driving transistor without loss of a data voltage and a light emitting display apparatus including the same. The pixel includes a light emitting device and a pixel circuit connected to the light emitting device. The pixel circuit includes a driving transistor including first and second gate electrodes, a source electrode, and a drain electrode, a first capacitor formed between the first gate electrode and the source electrode of the driving transistor, a second capacitor formed between the second gate electrode and the source electrode of the driving transistor, and a switching circuit connected to the first and second gate electrodes, the source electrode, and the drain electrode of the driving transistor and operating in order of a first to a fourth period.Type: ApplicationFiled: October 23, 2019Publication date: April 30, 2020Inventor: Hyoung-Su KIM
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Patent number: 10199446Abstract: Disclosed are a display device and a method of manufacturing the same. The display device includes a light emitting device including an anode electrode, a light emitting layer, and a cathode electrode, a driving transistor configured to supply a driving current to the light emitting device, and a capacitor including one electrode and other electrode each formed of a transparent conductive material. The one electrode and the other electrode of the capacitor overlap each other with at least one insulation layer therebetween.Type: GrantFiled: July 25, 2017Date of Patent: February 5, 2019Assignee: LG Display Co., Ltd.Inventors: EuiTae Kim, DooHyun Yoon, Hyoung-Su Kim, KiSeob Shin
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Patent number: 10140921Abstract: Various embodiments relate to an EM signal control circuit, an EM signal control method, and an organic light emitting display device. The EM signal control circuit according to an embodiment of the present invention includes additional elements (e.g., a transistor and a capacitor) configured to separate a set signal from a gate electrode of a transistor coupled to an output node and to stably keep turn-off of a transistor coupled to the output node. Voltage levels of a first emission power source and a first gate power source may be set differently from each other according to the present invention. Therefore, despite of a threshold voltage change of a transistor coupled to an output node, the transistor may remain turned off stably, thereby improving the reliability of the EM signal.Type: GrantFiled: December 12, 2016Date of Patent: November 27, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Hyoung-Su Kim, Euitae Kim, KiSeob Shin, Yongmin Jeong
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Patent number: 9892672Abstract: The present embodiments relate to a transparent display panel having an excellent transparency, light-emitting efficiency, and viewing angle, and a transparent display device including the same.Type: GrantFiled: December 29, 2015Date of Patent: February 13, 2018Assignee: LG DISPLAY CO., LTD.Inventors: BuYeol Lee, EuiTae Kim, Hyoung-Su Kim
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Publication number: 20180033847Abstract: Disclosed are a display device and a method of manufacturing the same. The display device includes a light emitting device including an anode electrode, a light emitting layer, and a cathode electrode, a driving transistor configured to supply a driving current to the light emitting device, and a capacitor including one electrode and other electrode each formed of a transparent conductive material. The one electrode and the other electrode of the capacitor overlap each other with at least one insulation layer therebetween.Type: ApplicationFiled: July 25, 2017Publication date: February 1, 2018Applicant: LG Display Co., Ltd.Inventors: EuiTae KIM, DooHyun YOON, Hyoung-Su KIM, KiSeob SHIN
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Patent number: 9773849Abstract: Disclosed is a transparent display device that includes a plurality of column lines and a plurality of horizontal lines crossing each other to define a plurality of pixel regions in a matrix, each column line including at least two data lines and a voltage line, and each horizontal line including a gate line; a first transparent electrode in each emission region; a transparent organic light emitting layer on the first electrode; and a second transparent electrode on the organic light emitting layer, wherein each pixel region includes a transmissive region and a circuit region, and wherein the transmissive region includes at least two emission regions that are divided by a first transparent bank pattern.Type: GrantFiled: July 5, 2016Date of Patent: September 26, 2017Assignee: LG DISPLAY CO., LTD.Inventors: EuiTae Kim, Namwook Cho, Hyoung-Su Kim, DooHyun Yoon
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Publication number: 20170193911Abstract: Various embodiments relate to an EM signal control circuit, an EM signal control method, and an organic light emitting display device. The EM signal control circuit according to an embodiment of the present invention includes additional elements (e.g., a transistor and a capacitor) configured to separate a set signal from a gate electrode of a transistor coupled to an output node and to stably keep turn-off of a transistor coupled to the output node. Voltage levels of a first emission power source and a first gate power source may be set differently from each other according to the present invention. Therefore, despite of a threshold voltage change of a transistor coupled to an output node, the transistor may remain turned off stably, thereby improving the reliability of the EM signal.Type: ApplicationFiled: December 12, 2016Publication date: July 6, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Hyoung-Su KIM, Euitae KIM, KiSeob SHIN, Yongmin JEONG
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Patent number: 9634038Abstract: There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).Type: GrantFiled: December 31, 2014Date of Patent: April 25, 2017Assignee: LG Display Co., Ltd.Inventors: Hoiyong Kwon, MiReum Lee, Hyoung-Su Kim
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Patent number: 9595546Abstract: An organic light emitting display is provided. The organic light emitting display comprises a multi-type thin-film transistor (TFT) and an organic light emitting diode. The multi-type TFT has a low-temperature-poly-silicon (LTPS) TFT and an oxide semiconductor TFT (oxide TFT) disposed on the LTPS TFT. The organic light emitting diode is electrically connected to the multi-type TFT. The LTPS TFT and the oxide TFT are connected to the same gate line.Type: GrantFiled: February 25, 2015Date of Patent: March 14, 2017Assignee: LG DISPLAY CO., LTD.Inventors: TaeHwan Kim, Namwook Cho, Hyoung-Su Kim, Jaemyon Lee
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Publication number: 20170062535Abstract: Disclosed is a transparent display device that includes a plurality of column lines and a plurality of horizontal lines crossing each other to define a plurality of pixel regions in a matrix, each column line including at least two data lines and a voltage line, and each horizontal line including a gate line; a first transparent electrode in each emission region; a transparent organic light emitting layer on the first electrode; and a second transparent electrode on the organic light emitting layer, wherein each pixel region includes a transmissive region and a circuit region, and wherein the transmissive region includes at least two emission regions that are divided by a first transparent bank pattern.Type: ApplicationFiled: July 5, 2016Publication date: March 2, 2017Inventors: EuiTae KIM, Namwook CHO, Hyoung-Su KIM, DooHyun YOON
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Patent number: 9543371Abstract: A transparent organic light-emitting display device is described herein. The transparent substrate includes a display area and non-display area adjacent to the display area. An organic light-emitting element is disposed on the display area of the transparent substrate. A first power line is disposed on the display area of the transparent substrate. The first power line supplies power to the organic light-emitting element. A first circuit board comprises a first power supply provided on a first side of the transparent substrate and a second circuit board comprises a second power supply provided on a second side of the transparent substrate. The first power supply is configured to receive power from the second power supply via the first power line. An additional interconnection film to supply power to the first power supply is not required, and thus the width of the bezel can be reduced.Type: GrantFiled: November 26, 2014Date of Patent: January 10, 2017Assignee: LG Display Co., Ltd.Inventors: Hyoung-Su Kim, BuYeol Lee
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Patent number: 9501165Abstract: An OLED display device with a touch screen includes first and second substrates; organic light emitting diodes in the display area over the first substrate; first pads and second pads in the non-display area over the first substrate; first and second touch electrodes in the display area over the second substrate; touch pads in the non-display area over the second substrate and corresponding to and overlapping the second pads, respectively; and a first adhesive layer between the first and second substrates and exposing the first and second pads, wherein pad contact holes pass through the second substrate, the touch pads, and the first adhesive layer and expose the second pads, respectively, and wherein a conduction means is disposed in each of the pad contact holes and electrically connects each of the touch pads with a corresponding second pad.Type: GrantFiled: December 23, 2014Date of Patent: November 22, 2016Assignee: LG Display Co., Ltd.Inventors: Hyoung-Su Kim, Bu-Yeol Lee
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Display having selective portions driven with adjustable refresh rate and method of driving the same
Patent number: 9489882Abstract: There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).Type: GrantFiled: March 31, 2014Date of Patent: November 8, 2016Assignee: LG Display Co., Ltd.Inventors: Hyoung-Su Kim, Namwook Cho, TaeHwan Kim, Jaemyon Lee -
Patent number: 9490276Abstract: There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).Type: GrantFiled: March 31, 2014Date of Patent: November 8, 2016Assignee: LG Display Co., Ltd.Inventors: Hyoung-Su Kim, Namwook Cho, TaeHwan Kim, Jaemyon Lee
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Publication number: 20160321982Abstract: The present embodiments relate to a transparent display panel having an excellent transparency, light-emitting efficiency, and viewing angle, and a transparent display device including the same.Type: ApplicationFiled: December 29, 2015Publication date: November 3, 2016Applicant: LG DISPLAY CO., LTD.Inventors: BuYeol LEE, EuiTae KIM, Hyoung-Su KIM
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Patent number: 9449994Abstract: There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).Type: GrantFiled: December 31, 2014Date of Patent: September 20, 2016Assignee: LG Display Co., Ltd.Inventors: Hoiyong Kwon, MiReum Lee, Hyoung-Su Kim