Patents by Inventor Kook-Hyun Choi
Kook-Hyun Choi 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: 20250079460Abstract: A cathode active material for a lithium secondary battery includes a lithium-transition metal oxide including nickel (Ni), cobalt (Co), manganese (Mn), strontium (Sr) and sulfur (S). A mole fraction of nickel based on the total number of moles of nickel, cobalt and manganese in the lithium-transition metal oxide is 0.9 or more. A molar ratio of cobalt relative to manganese in the lithium-transition metal oxide is in a range from 0.9 to 1.5. A molar ratio of strontium (Sr) relative to sulfur (S) in the lithium-transition metal oxide is greater than 0, and 4 or less.Type: ApplicationFiled: August 22, 2024Publication date: March 6, 2025Inventors: Mi Jung NOH, Byoung Ki SON, Jae Ho CHOI, Kook Hyun HAN, Eun Jin KIM, Yong Seok LEE
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Publication number: 20250072222Abstract: A light emitting display device includes a substrate, anodes disposed on the substrate, a pixel defining layer having first openings overlapping each of the anodes, light emitting layers each disposed within the first openings of the pixel defining layer, a cathode disposed on the light emitting layers and the pixel defining layer, an encapsulation layer disposed on the cathode, and a light blocking layer disposed on the encapsulation layer and including second openings each overlapping the first openings. One unit pixel includes two light emitting areas of a first color, one light emitting area of a second color, and one light emitting area of a third color. The light emitting areas of the first color have a diamond shape, the second color and the third color light emitting areas each have a rectangular shape, and at least one second opening has an oval shape.Type: ApplicationFiled: April 1, 2024Publication date: February 27, 2025Inventors: Kook Hyun CHOI, Changwook KIM, Changhyun BACK, Minjung ANN, Wang Jo LEE, Jun Hee LEE, Hyun Duck CHO, Beohm Rock CHOI, Yechan CHOI
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Patent number: 12202997Abstract: An encapsulating composition and an organic electronic device comprising the same, and the encapsulating composition which is capable of effectively blocking moisture or oxygen penetrating into the organic electronic device from the outside to secure the lifetime of the organic electronic device, implementing a top-emitting organic electronic device, being applied in an inkjet method, and providing a thin display.Type: GrantFiled: June 12, 2019Date of Patent: January 21, 2025Assignee: LG Chem, Ltd.Inventors: Ji Won Kwak, Kook Hyun Choi, Mi Lim Yu, Dong Hwan Kim, Hae Jong Jung
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Patent number: 12104075Abstract: The present application relates to an encapsulating composition and an organic electronic device comprising the same, and provides an encapsulating composition which can effectively block moisture or oxygen introduced into an organic electronic device from the outside to secure the lifetime of the organic electronic device, is possible to realize a top emission type organic electronic device, is applicable to an inkjet method and can maintain reliability of a sealing structure under severe conditions such as high temperature and high humidity while providing a thin display, and an organic electronic device comprising the same.Type: GrantFiled: December 11, 2017Date of Patent: October 1, 2024Assignee: LG Chem, Ltd.Inventors: Mi Lim Yu, Joon Hyung Kim, Yu Jin Woo, Kook Hyun Choi
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Patent number: 12096648Abstract: A method for encapsulating an organic electronic element and an organic electronic device is provided. The method for encapsulating the organic electronic element is capable of effectively blocking moisture or oxygen introduced from the outside to an organic electronic device, is excellent in flatness of an encapsulating layer to have excellent endurance reliability, and increases efficiency of an encapsulating process.Type: GrantFiled: October 1, 2018Date of Patent: September 17, 2024Assignee: LG Chem, Ltd.Inventors: Kook Hyun Choi, Joon Hyung Kim, Yu Jin Woo, Mi Lim Yu
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Publication number: 20240244890Abstract: A light emitting display device includes: a substrate; anodes on the substrate; a pixel definition layer having first openings overlapping with the anodes, respectively; emission layers located within the first openings, respectively; a cathode on the emission layers and the pixel definition layer; an encapsulation layer on the cathode; and a light blocking layer on the encapsulation layer, and having second openings corresponding to the first openings, respectively. Each of the first openings has a circular shape in a plan view, and each of the second openings has an elliptical shape in a plan view. In a plan view, a first opening from among the first openings is in contact with a second opening corresponding to the first opening from among the second openings, or positioned within the second opening.Type: ApplicationFiled: November 10, 2023Publication date: July 18, 2024Inventors: Jun Hee LEE, Kook Hyun CHOI, Seong-Yong HWANG
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Publication number: 20240244891Abstract: A light emitting display device includes a substrate, a plurality of anodes on the substrate, a pixel defining layer having a plurality of first openings overlapping the anodes, a plurality of emission layers in the first openings of the pixel defining layer, a cathode formed on the emission layers and the pixel defining layer, an encapsulation layer on the cathode, and a light blocking layer on the encapsulation layer and having a plurality of second openings corresponding to the first openings, wherein the first openings and the second openings respectively have an oval shape in a plan view, and wherein long-axis angles of the second openings include at least five different angles.Type: ApplicationFiled: November 14, 2023Publication date: July 18, 2024Inventors: Kook Hyun CHOI, Choong Youl IM, Ha Seok JEON, Beohm Rock CHOI, Seong-Yong HWANG
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Patent number: 12030988Abstract: The present application relates to an encapsulating composition and an organic electronic device comprising the same, and provides an encapsulating composition which can effectively block moisture or oxygen introduced into an organic electronic device from the outside to secure the lifetime of the organic electronic device, can implement a top-emitting organic electronic device, can be applied in an inkjet method, can provide a thin display and can effectively prevent interference of an electromagnetic field due to a low dielectric constant.Type: GrantFiled: September 30, 2019Date of Patent: July 9, 2024Assignee: LG Chem, Ltd.Inventors: Mi Lim Yu, Joon Hyung Kim, Ji Won Kwak, Kook Hyun Choi, Yung Jong Lee
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Publication number: 20240215413Abstract: An emissive display device includes a substrate. A first electrode is disposed on the substrate. A pixel defining layer has a first opening exposing the first electrode. A second electrode is disposed on both the pixel defining layer and the first electrode. An encapsulation layer at least partially covers the second electrode. A light blocking layer is disposed on the encapsulation layer and has a second opening. A color filter is disposed on the light blocking layer. A scattering layer is disposed within the second opening of the light blocking layer and includes a plurality of scattering particles. Particle density of the scattering particles has a value of 1 ea/mm3 or more and 10 ea/mm3 or less, and a diameter of the scattering particles is 0.1 ?m or more and 1.5 ?m or less.Type: ApplicationFiled: October 6, 2023Publication date: June 27, 2024Inventors: Seong-Yong Hwang, Hyun Duck Cho, Kook Hyun Choi, Jun Hee Lee, Ji Hwang Lee, Choong Youl Im, Beohm Rock Choi
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Patent number: 12016187Abstract: The present application provides an encapsulating composition which can effectively block moisture or oxygen introduced into an organic electronic device from the outside, and has excellent spreadability, is applicable to thin organic electronic devices and has excellent hardness of the cured product after curing, without causing an inter-circuit interference problem.Type: GrantFiled: September 10, 2019Date of Patent: June 18, 2024Assignee: LG Chem, Ltd.Inventors: Ji Won Kwak, Joon Hyung Kim, Kook Hyun Choi, Mi Lim Yu, Yung Jong Lee
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Publication number: 20240122025Abstract: A display device includes: a pixel defining layer defining openings arranged in first and second directions, the openings forming emission areas in which light emitting elements are disposed to emit light of different colors; a light blocking layer disposed on the pixel defining layer, and defining holes, each overlapping the opening and having a larger diameter than the opening; and color filters disposed on the light blocking layer to overlap the holes and overlap the emission areas. The opening has an opening interval, which is defined as a difference in diameter between the overlapping hole and the opening, in the openings, among homogeneous openings in which the light emitting elements for emitting light of the same color are disposed, the homogeneous openings adjacent in the first or second direction have different opening intervals, and among the homogeneous openings, openings having different opening intervals are at least three types.Type: ApplicationFiled: May 2, 2023Publication date: April 11, 2024Inventors: Chan Young KIM, Yeong Ho LEE, Ha Seok JEON, Jun Hee LEE, Choong Youl IM, Hyun Duck CHO, Kook Hyun CHOI
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Patent number: 11948493Abstract: A display device of the present disclosure comprises pixels arranged in a display, a data accumulator for accumulating first image data for an N-th frame output through the display, a data receiver for receiving second image data for an (N+1)th frame to be output through the display, and an afterimage controller for correcting a current value corresponding to a grayscale value of the second image data through a convolution operation between a filter, which is set based on the first image data, and the second image data.Type: GrantFiled: March 15, 2023Date of Patent: April 2, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jong Hwan Park, Dae Cheol Kim, Kook Hyun Choi
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Publication number: 20240040847Abstract: A display device includes pixels and emission areas, a light blocking layer including holes overlapping the emission areas, and color filters in the holes of the light blocking layer and overlapping the emission areas, the color filters include a first color filter overlapping a first emission area, a second color filter overlapping a second emission area, and a third color filter overlapping a third emission area, an area of the first emission area is greater than an area of the second emission area and an area of the third emission area and the area of the second emission area is greater than the area of the third emission area, and a ratio between opening widths of the first emission area, the second emission area, and the third emission area is about 1.33:1.15:1 to about 1.43:1.25:1.Type: ApplicationFiled: April 12, 2023Publication date: February 1, 2024Applicant: Samsung Display Co., LTD.Inventors: Choong Youl IM, Hyun Duck CHO, Kook Hyun CHOI, Ji Hyun KIM, Jun Hee LEE, Ha Seok JEON, Beohm Rock CHOI
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Publication number: 20240040848Abstract: A display device comprises pixel electrodes disposed on a substrate and spaced apart from one another, a pixel-defining film disposed on the substrate and including openings, which are spaced apart from one another and overlap the pixel electrodes, organic light-emitting layers disposed in the openings of the pixel-defining film, a common electrode disposed between the pixel-defining film and the organic light-emitting layers, an encapsulation layer disposed on the common electrode, a light-blocking layer disposed on the encapsulation layer and including holes, which overlap the openings and are spaced apart from one another, and color filters disposed in the holes of the light-blocking layer and overlapping the openings. Sides of each of the openings have concave-convex patterns including convex portions that protrude outwardly and concave portions that are inwardly depressed. The color filters are disposed to partially overlap one another on the light-blocking layer.Type: ApplicationFiled: April 12, 2023Publication date: February 1, 2024Applicant: Samsung Display Co., Ltd.Inventors: Seong Yong HWANG, Ji Hyun KIM, Chan Young KIM, Yeong Ho LEE, Jun Hee LEE, Choong Youl IM, Ha Seok JEON, Hyun Duck CHO, Kook Hyun CHOI, Beohm Rock CHOI
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Publication number: 20240038952Abstract: A display device comprises a thin film transistor layer comprising a first metal layer disposed on a substrate and a thin film transistor disposed on the first metal layer, first and second electrodes disposed in a display area on the thin film transistor layer and extending in parallel in a direction, a plurality of light emitting elements disposed between the first and second electrodes, and an alignment line disposed in a non-display area disposed adjacent to the display area and electrically connected to the first and second electrodes. The alignment line comprises metal patterns disposed in the first metal layer and spaced apart from each other, and a bridge portion disposed on the first metal layer and electrically connected to the metal patterns.Type: ApplicationFiled: March 2, 2023Publication date: February 1, 2024Applicant: Samsung Display Co., LTD.Inventors: In Woo KIM, Yong Tae CHO, Kook Hyun CHOI, Chang Woo KWON, Dae Cheol KIM, Jong Hwan PARK, Ji Hyeon SON
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Publication number: 20240014351Abstract: A display device may include: a substrate; and a pixel on the substrate, and including an emission area and a non-emission area. The pixel may include: a light emitting element in the emission area, the light emitting element including a first end and a second end; a first pixel electrode electrically connected to the first end of the light emitting element; a second pixel electrode electrically connected to the second end of the light emitting element; an organic transmission layer covering the first end and the second end of the light emitting element, organic transmission layer including a light diffusion particle; and a color conversion layer on the organic transmission layer, the color conversion layer including a color conversion particle to convert a first color of light emitted from the light emitting element to a second color of light.Type: ApplicationFiled: June 13, 2023Publication date: January 11, 2024Inventors: Jin Woo LEE, Zu Seok OH, Jeong Hyun LEE, Kyung Ah CHOI, Kook Hyun CHOI
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Publication number: 20240005832Abstract: A display device of the present disclosure comprises pixels arranged in a display, a data accumulator for accumulating first image data for an N-th frame output through the display, a data receiver for receiving second image data for an (N+1)th frame to be output through the display, and an afterimage controller for correcting a current value corresponding to a grayscale value of the second image data through a convolution operation between a filter, which is set based on the first image data, and the second image data.Type: ApplicationFiled: March 15, 2023Publication date: January 4, 2024Inventors: Jong Hwan PARK, Dae Cheol KIM, Kook Hyun CHOI
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Patent number: 11803073Abstract: A display substrate has first and second conductive layers separated from one another by an insulation layer. The first and second conductive layers are used to integrally form on the display substrate, pixel units in a relatively central display area of the substrate and integrated gate driving circuitry as well as associated wirings thereof in one or more peripheral areas. The first and second conductive layers are covered by a first protection layer made of a first electrically insulative material. A second and supplementing protection layer is provided on top of the first protection layer. The supplementing protection layer (buffer layer) is formed of a material different from that of the first protection layer so as to provide supplemental resistance against corrosive chemical agents and supplemental resistance against formation of cracks.Type: GrantFiled: June 6, 2022Date of Patent: October 31, 2023Assignee: Samsung Display Co., Ltd.Inventors: Kook-Hyun Choi, Hyo-Taek Lim, Dong-Ho Shin, Young-Je Cho, Yong-Jo Kim, Sang-Yong No, Sung-Hoon Kim, Hyo-Seop Kim
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Publication number: 20230317762Abstract: A display device includes a display area and a pad area. The display device may include a pixel on a base layer in the display area, the pixel including a light emitting element, and pads on the base layer in the pad area. The pads may include pad lines including first and second pad lines and first and second electrode parts. The pads may include a first contact area and a second contact area. The first pad line and the second pad line may be electrically connected to each other in the first contact area. The second pad line and the second electrode part may be electrically connected in the second contact area. The first electrode part may overlap the second pad line in a plan view. The first and second electrode parts may be electrically separated from each other by a pad insulating pattern.Type: ApplicationFiled: October 19, 2022Publication date: October 5, 2023Applicant: Samsung Display Co., LTD.Inventors: In Woo KIM, Yong Tae CHO, Kook Hyun CHOI
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Patent number: 11773253Abstract: Provided is an encapsulating composition and an organic electronic device comprising the same. The encapsulating composition can effectively block moisture or oxygen from being introduced into an organic electronic device from the outside. The encapsulating composition can secure the lifetime of the organic electronic device, make it possible to realize a top emission type organic electronic device, is applicable to an inkjet method and can provide a thin display.Type: GrantFiled: December 11, 2017Date of Patent: October 3, 2023Assignee: LG Chem, Ltd.Inventors: Yu Jin Woo, Joon Hyung Kim, Kook Hyun Choi, Mi Lim Yu