Patents by Inventor A-rang LEE
A-rang LEE 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: 11973209Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.Type: GrantFiled: June 7, 2019Date of Patent: April 30, 2024Assignee: LG Chem, Ltd.Inventors: Eun Hee Lee, Seong Bae Kim, Young Su Park, Yi Rang Lim, Hong Kyu Park, Song Yi Yang, Byung Hyun Hwang, Woo Hyun Kim
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Patent number: 11968898Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.Type: GrantFiled: October 22, 2020Date of Patent: April 23, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Hye-Gun Ryu, Ik-Rang Choe, Jun-Yun Kim, Seong-Keun Kim, Ju-Young Lee
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Patent number: 11943998Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.Type: GrantFiled: November 20, 2020Date of Patent: March 26, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Ik-Rang Choe, Hye-Gun Ryu, Jun-Yun Kim, Seong-Keun Kim, Ju-Young Lee
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Publication number: 20240010503Abstract: The present invention relates to a porous silicon-based composite, a preparation method therefor, and an anode active material comprising same, and, more specifically, the porous silicon-based composite comprises silicon particles and fluoride, and thus a porous silicon-based composite with excellent selective etching efficiency can be obtained, and the anode active material comprising same can further improve a discharge capacity and a capacity retention while holding the excellent initial efficiency of a secondary battery.Type: ApplicationFiled: November 2, 2021Publication date: January 11, 2024Applicant: DAEJOO ELECTRONIC MATERIALS CO., LTD.Inventors: Hyun Seok LEE, Jeong Gyu PARK, Young Min JEON, Hyun Hee LIM, Eo Rang LEE, Jong Chan LIM, Jung Hyun LEE
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Publication number: 20230391743Abstract: The present invention relates to a method of preparing an organosulfur compound, and more particularly, to a method of preparing an organosulfur compound including a step of synthesizing an organosulfur compound by reacting specific compounds with a metal hypohalite under a ruthenium catalyst in a mixed solvent containing water and an organic solvent, wherein the metal hypohalite is introduced in a solid state and a portion thereof reacts in an undissolved state. According to the present invention, the present invention has an effect of providing an organosulfur compound preparation method capable of preparing an organosulfur compound in high yield due to excellent reaction stability, short reaction time, and reduced side reactions.Type: ApplicationFiled: December 18, 2020Publication date: December 7, 2023Inventors: Jong Jin HA, Ah Rang LEE, Seok Jong LEE, Hee Geun PARK, Kwang Ju JUNG, Jeong Geun PARK
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Publication number: 20230391793Abstract: The present invention relates to a method of preparing an organosulfur compound, and more particularly, to a method of preparing an organosulfur compound including a step of synthesizing an organosulfur compound by reacting specific compounds with a metal hypohalite under a ruthenium catalyst in a mixed solvent containing water and an organic solvent, wherein reaction temperature during the synthesis is 0 to 25° C. According to the present invention, the present invention has an effect of providing an organosulfur compound preparation method capable of preparing an organosulfur compound in high yield due to excellent reaction stability, short reaction time, and reduced side reactions.Type: ApplicationFiled: December 18, 2020Publication date: December 7, 2023Inventors: Jong Jin HA, Ah Rang LEE, Seok Jong LEE, Hee Geun PARK, Kwang Ju JUNG, Jeong Geun PARK
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Patent number: 11823622Abstract: Provided herein may be a pixel. The pixel may include a driving transistor including a gate electrode coupled to a first node, a first electrode coupled to a first power line, and a second electrode coupled to a second node, a control transistor including a gate electrode coupled to the first node, a first electrode coupled to the second node, and a second electrode that is different from the first electrode, a first emission unit including at least one light-emitting element coupled between the second electrode of the control transistor and a second power line, and a second emission unit including at least one light-emitting element coupled between the second node and the second power line, wherein the second electrode of the control transistor is coupled to a first electrode of the first emission unit.Type: GrantFiled: November 5, 2021Date of Patent: November 21, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hwa Rang Lee, Kwi Hyun Kim, Sang Yong No, Ji Yeon Choi
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Publication number: 20230220241Abstract: A CMP slurry composition for polishing a tungsten pattern wafer and a method of polishing a tungsten pattern wafer, the CMP slurry composition includes a solvent; an abrasive agent containing silica modified with a silane compound having at least one nitrogen atom; and an alkylene oxide group-containing fluorine surfactant.Type: ApplicationFiled: November 7, 2022Publication date: July 13, 2023Inventors: Tae Won PARK, Jin Gyo KIM, Ji Ho LEE, Eui Rang LEE, Dong Hyeon LEE
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Patent number: 11667647Abstract: The disclosure provides a delayed fluorescent compound of the Formula and an organic light emitting diode including a first electrode, a second electrode and an organic emitting layer between the first and second electrodes, where the delayed fluorescent compound is included in the organic emitting layer, and an organic light emitting display device including the organic emitting layer.Type: GrantFiled: December 12, 2019Date of Patent: June 6, 2023Assignees: LG Display Co., Ltd., Soulbrain Co., Ltd.Inventors: Suk-Young Bae, Tae-Ryang Hong, Jun-Yun Kim, Jin-Hee Kim, Ah-Rang Lee
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Patent number: 11659750Abstract: Provided is a tiled display. The tiled display includes: a first display device including a first display area including pixels, a second display device including a second display area including pixels adjacent to the first display area, and a seam between the first display area and the second display area. Each of the first display device and the second display device includes: a first base part supporting a respective one of the first display device and the second display device, a thin-film transistor layer on the first base part, the thin-film transistor layer including thin-film transistors included in the pixels and including connection lines in the seam, and bridge electrodes in the seam to couple between the connection lines of the first display device and the second display device.Type: GrantFiled: August 24, 2021Date of Patent: May 23, 2023Assignee: Samsung Display Co., Ltd.Inventors: Kwi Hyun Kim, Sang Yong No, Tae Ho Kang, Hwa Rang Lee, Joon Hoo Choi, Ji Yeon Choi
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Patent number: 11637170Abstract: A display device, includes: pixels at a display area; gate lines at the display area, and connected to the pixels; carry clock lines and scan clock lines at the display area; and a gate driving circuit distributedly located at the display area, and connected to the carry clock lines, the scan clock lines, and the gate lines. The gate driving circuit includes a plurality of stages, each of the stages to output, as a carry signal, a carry clock signal supplied through a corresponding carry clock line from among the carry clock lines, and to output, as a scan signal, a scan clock signal supplied through a corresponding scan clock line from among the scan clock lines. The corresponding carry clock line and the corresponding scan clock line corresponding to one stage from among the stages are spaced from each other with at least one of the pixels interposed therebetween.Type: GrantFiled: August 17, 2021Date of Patent: April 25, 2023Assignee: Samsung Display Co., Ltd.Inventors: Sang Yong No, Tae Ho Kang, Kwi Hyun Kim, Hwa Rang Lee, Ji Yeon Choi
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Publication number: 20230041072Abstract: A display device includes: a display area and a non-display area; a first pixel area and a second pixel area, each provided in the display area; scan lines extending in a first direction and disposed in the first pixel area and the second pixel area; first sub-scan lines extending in a second direction and disposed in the first pixel area, the second direction intersecting the first direction; second sub-scan lines extending in the second direction and disposed in the first pixel area and the second pixel area; and a pad part provided in the non-display area, the pad part being electrically connected to the first sub-scan lines and the second sub-scan lines. The scan lines are electrically connected to at least one of the first sub-scan lines and the second sub-scan lines. The first sub-scan lines do not overlap the second pixel area in a plan view.Type: ApplicationFiled: July 21, 2022Publication date: February 9, 2023Applicant: Samsung Display Co., LTD.Inventors: Sang Yong NO, Hwa Rang LEE, Kwi Hyun KIM, Ji Yeon CHOI
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Patent number: 11574599Abstract: A scan driver includes active stages. Each active stage includes a first transistor that resets a control node, a second transistor that transfers a previous carry signal to the control node, a third transistor that transfers a scan clock signal to a scan output node, a first capacitor electrically connected between the control node and the scan output node, a fourth transistor that transfers a first low voltage to the scan output node, a fifth transistor that transfers a carry clock signal to a carry output node, a sixth transistor that electrically connects the control node to the carry output node, and a seventh transistor that transfers a second low voltage to the control node.Type: GrantFiled: January 13, 2022Date of Patent: February 7, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Yong No, Kwihyun Kim, Hwa-Rang Lee, Jiyeon Choi
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Patent number: 11560495Abstract: A CMP slurry composition for polishing a tungsten pattern wafer and a method of polishing a tungsten pattern wafer, the composition including a solvent, the solvent including a polar solvent or a non-polar solvent; an abrasive agent; and an oxidizing agent, wherein the abrasive agent includes silica modified with an amino silane that includes three nitrogen atoms.Type: GrantFiled: January 22, 2021Date of Patent: January 24, 2023Assignee: SAMSUNG SDI CO., LTD.Inventors: Won Jung Kim, Yoon Young Koo, Tae Won Park, Eui Rang Lee, Jong Won Lee, Youn Jin Cho
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Patent number: 11557731Abstract: The present disclosure provides an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; and an emitting material layer. The emitting material layer includes a p-type host, a n-type host and a phosphorescent dopant and positioned between the first electrode and the second electrode, wherein a first energy level of a HOMO of the p-type host is equal to or lower than a second energy level of a HOMO of the n-type host, and a difference between an energy level of a singlet state of the n-type host and an energy level of a triplet state of the n-type host is greater than 0.3 eV and smaller than 0.5 eV.Type: GrantFiled: December 27, 2019Date of Patent: January 17, 2023Assignees: LG DISPLAY CO., LTD., SOULBRAIN CO., LTD.Inventors: Hyong-Jong Choi, Tae-Ryang Hong, Jun-Yun Kim, Jin Hee Kim, Ah-Rang Lee
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Publication number: 20220383821Abstract: A scan driver includes active stages. Each active stage includes a first transistor that resets a control node, a second transistor that transfers a previous carry signal to the control node, a third transistor that transfers a scan clock signal to a scan output node, a first capacitor electrically connected between the control node and the scan output node, a fourth transistor that transfers a first low voltage to the scan output node, a fifth transistor that transfers a carry clock signal to a carry output node, a sixth transistor that electrically connects the control node to the carry output node, and a seventh transistor that transfers a second low voltage to the control node.Type: ApplicationFiled: January 13, 2022Publication date: December 1, 2022Applicant: Samsung Display Co., LTD.Inventors: Sang Yong NO, Kwihyun KIM, Hwa-Rang LEE, Jiyeon CHOI
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Publication number: 20220362650Abstract: A golf putting mat includes: two or more putting pads (3-1, 3-2, and 3-3) having different green speeds from one another; and a main body (5) having the shape of a band in such a manner as to attach the putting pads (3-1, 3-2, and 3-3) connected serially with one another to top thereof, whereby two or more putting surfaces with different green speeds can be formed on one mat body, thereby allowing a user to practice putting with the different green speeds on one putting mat.Type: ApplicationFiled: May 13, 2021Publication date: November 17, 2022Inventor: Ki Rang LEE
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Publication number: 20220343824Abstract: A display device includes a data driver that outputs a first data signal and a second data signal of different voltages, and a pixel that emits light in response to the first data signal and the second data signal. The pixel includes a current generator generating a driving current corresponding to the first data signal, a first light emitting part including a first electrode, a second electrode, and a first light emitting element, a second light emitting part including a third electrode, a fourth electrode connected, and a second light emitting element, and a current controller controlling a divided current supplied to the second light emitting part in response to the second data signal.Type: ApplicationFiled: December 8, 2021Publication date: October 27, 2022Applicant: Samsung Display Co., LTD.Inventors: Kwi Hyun KIM, Sang Yong NO, Hwa Rang LEE, Ji Yeon CHOI
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Patent number: 11468817Abstract: A display device includes a data driver that outputs a first data signal and a second data signal of different voltages, and a pixel that emits light in response to the first data signal and the second data signal. The pixel includes a current generator generating a driving current corresponding to the first data signal, a first light emitting part including a first electrode, a second electrode, and a first light emitting element, a second light emitting part including a third electrode, a fourth electrode connected, and a second light emitting element, and a current controller controlling a divided current supplied to the second light emitting part in response to the second data signal.Type: GrantFiled: December 8, 2021Date of Patent: October 11, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwi Hyun Kim, Sang Yong No, Hwa Rang Lee, Ji Yeon Choi
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Patent number: D980816Type: GrantFiled: May 19, 2020Date of Patent: March 14, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhenqi Tang, Haibo Luo, Ting Xu, Ye Rang Lee