Patents by Inventor Wook-Sung Kim
Wook-Sung 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: 20240046574Abstract: A method for providing a mixed reality combined physical space, performed by an electronic controller of a physical space, may comprise: receiving a signal for conversion from a traditional physical space to a mixed reality physical space; controlling an operation of an actuator coupled to a curtain or blind that suppresses reflection of light on front and wall surfaces of a physical space according to an input of the signal such that the curtain or blind is unfolded; and controlling an illumination of a lighting of the mixed reality physical space to lower or increase the illumination at a specific level interval or continuously, wherein a quality of mixed reality content provided to the mixed reality physical space is improved by controlling the illumination of the lighting.Type: ApplicationFiled: October 13, 2022Publication date: February 8, 2024Applicant: POSTECH Research and Business Development FoundationInventors: Wook Sung KIM, Ji Hyung KIM, Kyeong Sun KIM, Sun Geun PARK
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Patent number: 11869395Abstract: A switchable display system for providing virtual reality or augmented reality using a color calibration display apparatus may comprise: an augmented reality data server configured to provide virtual reality and augmented reality information; and a color calibration display apparatus using a color calibration display module configured to perform color calibration according to ambient illuminance in a use environment.Type: GrantFiled: November 2, 2021Date of Patent: January 9, 2024Assignee: POSTECH Research and Business Development FoundationInventors: Ji Hyung Kim, Young Seok Kim, Sungeun Park, Wook Sung Kim
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Patent number: 11499933Abstract: A method of manufacturing a graphene-tin oxide nanocomposite comprises dispersing graphene and tin oxide in an organic solvent to prepare a dispersion solution, drying the dispersion solution to obtain a powdery mixture, and irradiating the mixture with microwaves to obtain a graphene-tin oxide nanocomposite. Irradiation of graphene and tin oxide with microwaves results in the simplification of the manufacturing process of graphene-tin oxide nanocomposites and a decrease in manufacturing time and cost, and produce graphene-tin oxide nanocomposites at low temperatures. Further, the graphene-tin oxide nanocomposite with improved sensitivity to NO2 gas may be produced.Type: GrantFiled: May 17, 2018Date of Patent: November 15, 2022Assignees: LG DISPLAY CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Sung Pil Ryu, Ki Seok Chang, Wook Sung Kim, Han Saem Kang, Hyoun Woo Kim, Yong Jung Kwon, Myong Sik Choi, Sung Yong Kang, Jae Hoon Bang
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Publication number: 20220139279Abstract: A switchable display system for providing virtual reality or augmented reality using a color calibration display apparatus may comprise: an augmented reality data server configured to provide virtual reality and augmented reality information; and a color calibration display apparatus using a color calibration display module configured to perform color calibration according to ambient illuminance in a use environment.Type: ApplicationFiled: November 2, 2021Publication date: May 5, 2022Inventors: Ji Hyung KIM, Young Seok KIM, Sungeun PARK, Wook Sung KIM
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Patent number: 10967666Abstract: The present disclosure relates to an encoding method and a decoding method using a chiral metal nanostructure. The encoding method according to an aspect of the present disclosure includes preparing a plurality of metal nanostructures having a chiral structure; obtaining the optical data of the plurality of metal nanostructures, and preparing a security medium including the plurality of metal.Type: GrantFiled: April 27, 2018Date of Patent: April 6, 2021Assignees: LG DISPLAY CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Ki Seok Chang, Sung Pil Ryu, Ki Tae Nam, Wook Sung Kim, Hye Eun Lee, Hyo Yong Ahn
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Publication number: 20200189309Abstract: The present disclosure relates to an encoding method and a decoding method using a chiral metal nanostructure. The encoding method according to an aspect of the present disclosure includes preparing a plurality of metal nanostructures having a chiral structure; obtaining the optical data of the plurality of metal nanostructures, and preparing a security medium including the plurality of metal.Type: ApplicationFiled: April 27, 2018Publication date: June 18, 2020Applicants: LG Display Co., Ltd., Seoul National University R&DB FoundationInventors: Ki Seok CHANG, Sung Pil RYU, Ki Tae NAM, Wook Sung KIM, Hye Eun LEE, Hyo Yong AHN
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Publication number: 20200166469Abstract: A method of manufacturing a graphene-tin oxide nanocomposite comprises dispersing graphene and tin oxide in an organic solvent to prepare a dispersion solution, drying the dispersion solution to obtain a powdery mixture, and irradiating the mixture with microwaves to obtain a graphene-tin oxide nanocomposite. Irradiation of graphene and tin oxide with microwaves results in the simplification of the manufacturing process of graphene-tin oxide nanocomposites and a decrease in manufacturing time and cost, and produce graphene-tin oxide nanocomposites at low temperatures. Further, the graphene-tin oxide nanocomposite with improved sensitivity to NO2 gas may be produced.Type: ApplicationFiled: May 17, 2018Publication date: May 28, 2020Applicants: LG Display Co., Ltd., Industry-University Cooperation Foundation Hanyang UniversityInventors: Sung Pil RYU, Ki Seok CHANG, Wook Sung KIM, Han Saem KANG, Hyoun Woo KIM, Yong Jung KWON, Myong Sik CHOI, Sung Yong KANG, Jae Hoon BANG
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Patent number: 10474000Abstract: Disclosed are a liquid lens and a liquid lens module, which enhance the fill factor of a liquid lens having an inclined partition, thereby achieving a low drive voltage and a high fill factor. The liquid lens includes an oil layer and a conductive liquid inside a chamber having an inclined partition. The oil layer is formed of an oil mixture obtained by mixing at least two types of oils having different indices of refraction, and the oil mixture has the index of refraction corresponding to the index of refraction of the material in which the chamber is formed.Type: GrantFiled: June 21, 2017Date of Patent: November 12, 2019Assignees: LG Display Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Sung-Pil Ryu, Wook-Sung Kim, Han-Saem Kang, Ki-Seok Chang, Yong-Hyub Won, Jun-Sik Lee, Doo-Seub Shin
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Publication number: 20170363930Abstract: Disclosed are a liquid lens and a liquid lens module, which enhance the fill factor of a liquid lens having an inclined partition, thereby achieving a low drive voltage and a high fill factor. The liquid lens includes an oil layer and a conductive liquid inside a chamber having an inclined partition. The oil layer is formed of an oil mixture obtained by mixing at least two types of oils having different indices of refraction, and the oil mixture has the index of refraction corresponding to the index of refraction of the material in which the chamber is formed.Type: ApplicationFiled: June 21, 2017Publication date: December 21, 2017Inventors: Sung-Pil RYU, Wook-Sung KIM, Han-Saem KANG, Ki-Seok CHANG, Yong-Hyub WON, Jun-Sik LEE, Doo-Seub SHIN
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Patent number: 9097943Abstract: A liquid crystal display device includes first and second substrate facing each other, a pixel electrode and a common electrode on an inner surface of the first substrate and generating an electric field substantially parallel to the first substrate, a first alignment layer on the inner surface of the first substrate and homeotropically aligned, a first polarizer on an outer surface of the first substrate and having a first polarization axis, a second alignment layer on an inner surface of the second substrate and homogeneously aligned, a second polarizer on an outer surface of the second substrate and having a second polarization axis perpendicular to the first polarization axis, and a liquid crystal layer between the first and second alignment layers.Type: GrantFiled: August 11, 2011Date of Patent: August 4, 2015Assignee: LG Display Co., Ltd.Inventors: Wook-Sung Kim, Su-Seok Choi
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Patent number: 8913204Abstract: A method of driving a bi-stable chiral splay nematic mode liquid crystal display device including first and second substrates, a liquid crystal layer between the first and second substrates, first and second reset electrodes on one of inner surfaces of the first and second substrates, a pixel electrode on the inner surface of the first substrate and a common electrode on the inner surface of the second substrate includes: applying a data voltage and a common voltage to the pixel electrode and the common electrode, respectively, such that a vertical electric field is generated and the liquid crystal layer transitions from a splay state to a ?-twist state during a writing period; and floating the pixel electrode and the common electrode such that the liquid crystal layer keeps the ?-twist state and displays a present image during a memory period.Type: GrantFiled: May 3, 2011Date of Patent: December 16, 2014Assignee: LG Display Co., Ltd.Inventors: Dong-Guk Kim, Wook-Sung Kim
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Patent number: 8823891Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line and a data line on the first substrate, the gate line and the data line crossing each other to define a pixel region; a thin film transistor and a pixel electrode in the pixel region on the first substrate, the thin film transistor connected to the gate line and the data line, the pixel electrode connected to the thin film transistor; a common electrode on the second substrate, the common electrode facing the pixel electrode; at least one first reset electrode and at least one second reset electrode on one of the first and second substrates, the at least one first reset electrode and the at least one second reset electrode spaced apart from each other; and a bi-stable chiral splay nematic liquid crystal layer between the first and second substrates, the bi-stable chiral splay nematic liquid crystal layer having bi-stable states of a splay state as an initial state and a ?-twist state, wheType: GrantFiled: May 3, 2011Date of Patent: September 2, 2014Assignee: LG Display Co., Ltd.Inventors: Dong-Guk Kim, Wook-Sung Kim
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Patent number: 8659736Abstract: A dual mode LCD device includes first and second substrates facing each other; a first electrode on an inner surface of the first substrate and having a plate shape; a first insulating layer on the first electrode; a second electrode and a third electrode on the first insulating layer, being spaced apart from each other and extending along a first direction; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer interposed between the first and second substrates and including chiral dopants, wherein liquid crystal molecules of the liquid crystal layer are stably arranged in a first twist state and a second twist state, wherein the first and second twist states are used for a memory mode and the second twist state and a vertical alignment state are used for a dynamic mode.Type: GrantFiled: December 22, 2011Date of Patent: February 25, 2014Assignee: LG Display Co., Ltd.Inventors: Joong-Ha Lee, Wook-Sung Kim, Dong-Guk Kim
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Patent number: 8654280Abstract: A bi-stable chiral splay nematic mode liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line and a data line on an inner surface of the first substrate; a thin film transistor connected to the gate line and the data line; a reflecting plate on the thin film transistor, the reflecting plate including an embossing pattern; a first passivation layer including a flat top surface on the reflecting plate; a first electrode on the first passivation layer; a second passivation layer on the first electrode; at least one second electrode and at least one third electrode on the second passivation layer; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer including bi-stable chiral splay nematic liquid crystal molecules between the first and second substrates.Type: GrantFiled: May 3, 2011Date of Patent: February 18, 2014Assignee: LG Display Co., LtdInventors: Dong-Guk Kim, Wook-Sung Kim
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Patent number: 8427616Abstract: A bistable chiral splay nematic mode liquid crystal display device including a first substrate; a first electrode on the first substrate, the first electrode having a plate shape; a first insulating layer covering the first electrode; a second electrode and a third electrode on the first insulating layer along a first direction; a second substrate facing the first substrate; a fourth electrode on the second substrate, the fourth electrode having a plate shape; a second insulating layer covering the fourth electrode; a fifth electrode and a sixth electrode on the second insulating layer along a second direction; and a bistable chiral splay nematic liquid crystal layer between the first substrate and the second substrate.Type: GrantFiled: September 13, 2011Date of Patent: April 23, 2013Assignee: LG Display Co., Ltd.Inventors: Dong-Guk Kim, Wook-Sung Kim, Dong-Jin Kim, Jae-Chang Kim, Joong-Ha Lee
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Publication number: 20120300144Abstract: A dual mode LCD device includes first and second substrates facing each other; a first electrode on an inner surface of the first substrate and having a plate shape; a first insulating layer on the first electrode; a second electrode and a third electrode on the first insulating layer, being spaced apart from each other and extending along a first direction; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer interposed between the first and second substrates and including chiral dopants, wherein liquid crystal molecules of the liquid crystal layer are stably arranged in a first twist state and a second twist state, wherein the first and second twist states are used for a memory mode and the second twist state and a vertical alignment state are used for a dynamic mode.Type: ApplicationFiled: December 22, 2011Publication date: November 29, 2012Inventors: Joong-Ha LEE, Wook-Sung Kim, Dong-Guk Kim
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Publication number: 20120162578Abstract: A bistable chiral splay nematic mode liquid crystal display device including a first substrate; a first electrode on the first substrate, the first electrode having a plate shape; a first insulating layer covering the first electrode; a second electrode and a third electrode on the first insulating layer along a first direction; a second substrate facing the first substrate; a fourth electrode on the second substrate, the fourth electrode having a plate shape; a second insulating layer covering the fourth electrode; a fifth electrode and a sixth electrode on the second insulating layer along a second direction; and a bistable chiral splay nematic liquid crystal layer between the first substrate and the second substrate.Type: ApplicationFiled: September 13, 2011Publication date: June 28, 2012Inventors: Dong-Guk KIM, Wook-Sung Kim, Dong-Jin Kim, Jae-Chang Kim, Joong-Ha Lee
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Publication number: 20120038860Abstract: A liquid crystal display device includes first and second substrate facing each other, a pixel electrode and a common electrode on an inner surface of the first substrate and generating an electric field substantially parallel to the first substrate, a first alignment layer on the inner surface of the first substrate and homeotropically aligned, a first polarizer on an outer surface of the first substrate and having a first polarization axis, a second alignment layer on an inner surface of the second substrate and homogeneously aligned, a second polarizer on an outer surface of the second substrate and having a second polarization axis perpendicular to the first polarization axis, and a liquid crystal layer between the first and second alignment layers.Type: ApplicationFiled: August 11, 2011Publication date: February 16, 2012Inventors: Wook-Sung KIM, Su-Seok Choi
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Publication number: 20110267552Abstract: A method of driving a bi-stable chiral splay nematic mode liquid crystal display device including first and second substrates, a liquid crystal layer between the first and second substrates, first and second reset electrodes on one of inner surfaces of the first and second substrates, a pixel electrode on the inner surface of the first substrate and a common electrode on the inner surface of the second substrate includes: applying a data voltage and a common voltage to the pixel electrode and the common electrode, respectively, such that a vertical electric field is generated and the liquid crystal layer transitions from a splay state to a ?-twist state during a writing period; and floating the pixel electrode and the common electrode such that the liquid crystal layer keeps the ?-twist state and displays a present image during a memory period.Type: ApplicationFiled: May 3, 2011Publication date: November 3, 2011Inventors: Dong-Guk Kim, Wook-Sung Kim
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Publication number: 20110267564Abstract: A bi-stable chiral splay nematic mode liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line and a data line on an inner surface of the first substrate; a thin film transistor connected to the gate line and the data line; a reflecting plate on the thin film transistor, the reflecting plate including an embossing pattern; a first passivation layer including a flat top surface on the reflecting plate; a first electrode on the first passivation layer; a second passivation layer on the first electrode; at least one second electrode and at least one third electrode on the second passivation layer; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer including bi-stable chiral splay nematic liquid crystal molecules between the first and second substrates.Type: ApplicationFiled: May 3, 2011Publication date: November 3, 2011Inventors: Dong-Guk Kim, Wook-Sung Kim