Patents by Inventor Se Hyun KWON
Se Hyun KWON 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: 12001141Abstract: The present disclosure relates to a photopolymer composition, and more particularly, to a compound having a novel structure, a photopolymer composition including the compound as a dye, a hologram recording medium produced from the photopolymer composition, an optical element including the hologram recording medium, and a holographic recording method using the photopolymer composition.Type: GrantFiled: April 29, 2019Date of Patent: June 4, 2024Assignees: LG CHEM LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Heon Kim, Yoosik Kim, Raisa Kharbash, Se Hyun Kwon, Yeongrae Chang, Seokhoon Jang
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Patent number: 11994704Abstract: The present disclosure relates to a hologram recording medium having one surface with a higher surface energy than a polymer resin layer containing at least one polymer selected from the group consisting of triacetyl cellulose, alicyclic olefin polymer and polyethylene terephthalate, a hologram recording medium wherein the surface energy of any one surface is 50 mN/m or more, and an optical element comprising the hologram medium.Type: GrantFiled: September 11, 2019Date of Patent: May 28, 2024Assignee: LG CHEM, LTD.Inventors: Seokhoon Jang, Jinseok Byun, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Publication number: 20240079248Abstract: A substrate processing method, involving etching a silicon nitride layer selectively in a substrate where a silicon oxide layer and the silicon nitride layer are stacked, includes: wet-etching the silicon nitride layer with a phosphoric acid-based etching solution; and dry-etching a regrowth oxide, which is formed on a surface of the silicon oxide layer in the wet etching step, with an etching gas.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Applicant: TES Co., LtdInventors: Bong-Soo KWON, Do-Hyun KIM, Yu-Ri PARK, Se-Chan KIM
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Publication number: 20240072712Abstract: Provided an electronic device including a main body and a kit connected to the main body, and the main body includes a battery, a first motor, an electric wire connected to the battery, and a first controller connected to the electric wire, the kit includes a second motor supplied with power through the electric wire, an inverter connected to the second motor, and a second controller connected to the electric wire and configured to control driving of the inverter, and the second controller is configured to transmit information to the first controller through switching frequency control of the inverter and control a switching frequency of the inverter so that a current associated with the second motor is greater than zero in a section in which transmission of the information is performed.Type: ApplicationFiled: March 9, 2021Publication date: February 29, 2024Inventors: Se Hwa CHOE, Cha Seung JUN, Sung Yong SHIN, Sun Ku KWON, Dong Hyun LIM
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Patent number: 11851515Abstract: The present disclosure relates to a photopolymer composition including a polymer matrix or a precursor thereof having a predetermined chemical structure; a photoreactive monomer; and a photoinitiator, a hologram recording medium, an optical element and a holographic recording method using the same.Type: GrantFiled: June 29, 2020Date of Patent: December 26, 2023Assignee: LG Chem, Ltd.Inventors: Seokhoon Jang, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Patent number: 11827731Abstract: The present disclosure relates to a photopolymer composition for hologram production comprising a polymer matrix or a precursor thereof having a glass transition temperature of 80° C. or less; a photoreactive monomer; a low refractive index fluorine-based compound; and a photoinitiator, a hologram recording medium produced from the photopolymer composition, an optical element comprising the hologram recording medium, and a holographic recording method using the hologram recording medium.Type: GrantFiled: January 10, 2020Date of Patent: November 28, 2023Assignee: LG CHEM, LTD.Inventors: Seokhoon Jang, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Patent number: 11760647Abstract: Provided is a hydrophobic silica aerogel precursor, and a hydrophobic silica aerogel produced using the same. In the methods, a linear silane crosslinking agent containing a PEG-derived unit is introduced when preparing a hydrophobic aerogel precursor, resulting in the production of a hydrophobic silica aerogel having improved high-temperature thermal stability and improved physical properties.Type: GrantFiled: December 7, 2018Date of Patent: September 19, 2023Assignee: LG Chem, Ltd.Inventors: Hee Jung Choi, Se Hyun Kwon, Yeong Rae Chang, Seok Hoon Jang
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Patent number: 11591433Abstract: The present disclosure is to provide a photopolymer composition including a polymer matrix or a precursor thereof including a reaction product of a reactive isocyanate compound having a hydrogen bonding functional group capable of forming multiple hydrogen bonds and at least one isocyanate group, and a polyol having at least two hydroxyl groups; a photoreactive monomer; and a photoinitiator, a hologram recording medium produced from the photopolymer composition, an optical element including the photopolymer composition and a holographic recording method using the photopolymer composition.Type: GrantFiled: December 7, 2018Date of Patent: February 28, 2023Assignee: LG CHEM, LTD.Inventors: Heon Kim, Yeongrae Chang, Seokhoon Jang, Se Hyun Kwon
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Patent number: 11435664Abstract: Provided is a photopolymer composition for hologram recording comprising: a polymer matrix or a precursor thereof; a dye including a compound of the following Chemical Formula 1; a photoreactive monomer; and a photoinitiator,Type: GrantFiled: December 13, 2019Date of Patent: September 6, 2022Assignees: LG Chem, Ltd., Korea Advanced Institute of Science and TechnologyInventors: Heon Kim, Yoosik Kim, Raisa Kharbash, Se Hyun Kwon, Yeongrae Chang, Seokhoon Jang
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Patent number: 11307494Abstract: The present disclosure relates to a hologram medium comprising: a polymer substrate including a polymer resin in which a silane-based functional group is located in a main chain or a branched chain, wherein a fine pattern is formed on at least one surface of the polymer substrate, and an optical element.Type: GrantFiled: September 10, 2019Date of Patent: April 19, 2022Assignee: LG CHEM, LTD.Inventors: Heon Kim, Seokhoon Jang, Se Hyun Kwon, Yeongrae Chang, Jinseok Byun
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Patent number: 11292888Abstract: A photopolymerizable composition including: a polymer matrix or a precursor thereof containing a reaction product of an acrylate-based polyol and a compound containing at least one isocyanate group; a photoreactive monomer; and a non-reactive fluoro compound and a photoinitiator; a hologram recording medium produced from the composition; an optical element including the hologram recording medium; and a method of recording a hologram using the photopolymerizable composition.Type: GrantFiled: October 16, 2018Date of Patent: April 5, 2022Assignee: LG CHEM, LTD.Inventors: Seok Hoon Jang, Heon Kim, Boo Kyung Kim, Yeong Rae Chang, Yongjoon Heo, Se Hyun Kwon
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Patent number: 11226557Abstract: The present disclosure relates to a hologram recording medium having a main relaxation temperature (Tr) of 0° C. or less, wherein the Tr is a point where a rate of change of phase angle with respect to temperature is the largest in a range of ?80° C. to 30° C. in dynamic mechanical analysis. The present disclosure also relates to an optical element including the same and a holographic recording method using the hologram recording medium.Type: GrantFiled: December 7, 2018Date of Patent: January 18, 2022Assignee: LG CHEM, LTD.Inventors: Seokhoon Jang, Hyunsup Lee, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Publication number: 20210340302Abstract: The present disclosure relates to a photopolymer composition including a polymer matrix or a precursor thereof having a predetermined chemical structure; a photoreactive monomer; and a photoinitiator, a hologram recording medium, an optical element and a holographic recording method using the same.Type: ApplicationFiled: June 29, 2020Publication date: November 4, 2021Inventors: Seokhoon JANG, Heon KIM, Se Hyun KWON, Yeongrae CHANG
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Publication number: 20210301055Abstract: The present disclosure relates to a photopolymer composition for hologram production comprising a polymer matrix or a precursor thereof having a glass transition temperature of 80° C. or less; a photoreactive monomer; a low refractive index fluorine-based compound; and a photoinitiator, a hologram recording medium produced from the photopolymer composition, an optical element comprising the hologram recording medium, and a holographic recording method using the hologram recording medium.Type: ApplicationFiled: January 10, 2020Publication date: September 30, 2021Inventors: Seokhoon Jang, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Patent number: 11126082Abstract: The present disclosure is to provide a photopolymer composition including a polymer matrix or a precursor thereof having a specific chemical structure; a photoreactive monomer; and a photoinitiator. The present disclosure is also to provide a hologram recording medium, an optical element, and a holographic recording method using the photopolymer composition.Type: GrantFiled: December 7, 2018Date of Patent: September 21, 2021Assignee: LG CHEM, LTD.Inventors: Seokhoon Jang, Sooyoung Kwak, Heon Kim, Se Hyun Kwon, Yeongrae Chang
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Patent number: 11084933Abstract: The present invention relates to a compound having a novel structure, a photopolymer composition including the compound as a dye, a hologram recording medium produced from the photopolymer composition, an optical element including the hologram recording medium, and a holographic recording method using the hologram recording medium.Type: GrantFiled: December 7, 2018Date of Patent: August 10, 2021Assignees: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Heon Kim, Yoosik Kim, Raisa Kharbash, Se Hyun Kwon, Yeongrae Chang, Seokhoon Jang
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Publication number: 20210239894Abstract: The present disclosure relates to a hologram recording medium having one surface with a higher surface energy than a polymer resin layer containing at least one polymer selected from the group consisting of triacetyl cellulose, alicyclic olefin polymer and polyethylene terephthalate, a hologram recording medium wherein the surface energy of any one surface is 50 mN/m or more, and an optical element comprising the hologram medium.Type: ApplicationFiled: September 11, 2019Publication date: August 5, 2021Applicant: LG CHEM, LTD.Inventors: Seokhoon JANG, Jinseok BYUN, Heon KIM, Se Hyun KWON, Yeongrae CHANG
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Patent number: 11079678Abstract: A photopolymer composition comprising a polymer matrix or a precursor thereof including a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, and (ii) a linear silane crosslinking agent; a photoreactive monomer; and a photoinitiator, a hologram recording medium using the same, an optical element using the hologram recording medium, and a holographic recording method. The photopolymer composition can more easily provide a photopolymer layer having improved durability against temperature and humidity while having a large refractive index modulation value.Type: GrantFiled: September 11, 2018Date of Patent: August 3, 2021Assignee: LG CHEM, LTD.Inventors: Seok Hoon Jang, Heon Kim, Yongjoon Heo, Se Hyun Kwon, Yeong Rae Chang
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Publication number: 20210026239Abstract: Provided is a photopolymer composition for hologram recording comprising: a polymer matrix or a precursor thereof; a dye including a compound of the following Chemical Formula 1; a photoreactive monomer; and a photoinitiator,Type: ApplicationFiled: December 13, 2019Publication date: January 28, 2021Inventors: Heon KIM, Yoosik KIM, Raisa KHARBASH, Se Hyun KWON, Yeongrae CHANG, Seokhoon JANG
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Publication number: 20210003919Abstract: The present disclosure relates to a photopolymer composition, and more particularly, to a compound having a novel structure, a photopolymer composition including the compound as a dye, a hologram recording medium produced from the photopolymer composition, an optical element including the hologram recording medium, and a holographic recording method using the photopolymer composition.Type: ApplicationFiled: April 29, 2019Publication date: January 7, 2021Applicants: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Heon KIM, Yoosik KIM, Raisa KHARBASH, Se Hyun KWON, Yeongrae CHANG, Seokhoon JANG