Patents by Inventor Du-Hyun Shin
Du-Hyun Shin 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: 11922543Abstract: A method, performed by a coloring apparatus, of coloring a sketch image includes adding a color pointer on the sketch image, according to an input of a user; determining an object related to a point where the color pointer is located, from among objects configuring the sketch image; and generating a colored image by coloring the determined object, based on a color of the color pointer.Type: GrantFiled: January 18, 2022Date of Patent: March 5, 2024Assignee: NAVER WEBTOON LTD.Inventors: Jun Hyun Park, Yu Ra Shin, Du Yong Lee, Joo Young Moon
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Publication number: 20140199498Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: ApplicationFiled: March 14, 2014Publication date: July 17, 2014Applicant: LG CHEM, LTD.Inventors: Du-Hyun SHIN, Hyuk YOON, Moon-Soo PARK
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Publication number: 20140192299Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: ApplicationFiled: March 13, 2014Publication date: July 10, 2014Applicant: LG CHEM, LTD.Inventors: Du-Hyun SHIN, Hyuk YOON, Moon-Soo PARK
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Patent number: 8703253Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: GrantFiled: January 19, 2009Date of Patent: April 22, 2014Assignee: LG Chem, Ltd.Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
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Patent number: 8574689Abstract: There are provided an optical compensation film including an alignment film whose adhesiveness to a substrate and a liquid crystal layer and alignment property are excellent when a novel substrate is used to solve the problem regarding deteriorated durability being caused when a retardation film including a liquid crystal film is used under a hot and humid environment, and an integrated polarizing plate comprising the same. The O-plate includes a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that is composed of polyvinyl alcohol, a multifunctional acrylate monomer, a compatibilizing agent, a photo initiator and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film.Type: GrantFiled: November 15, 2007Date of Patent: November 5, 2013Assignee: LG Chem, Ltd.Inventors: Du-Hyun Shin, Chang-Hun Yun, Byoung-Kun Jeon, Moon-Soo Park
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Publication number: 20110051050Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: ApplicationFiled: January 19, 2009Publication date: March 3, 2011Applicant: LG CHEM, LTD.Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park, Je-Hyuk Yoo, Sung-Ho Chun, Heon Kim, Dai-Seung Choi, Dong-Woo Yoo
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Publication number: 20110043731Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: ApplicationFiled: January 19, 2009Publication date: February 24, 2011Applicant: LG CHEM, LTD.Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
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Patent number: 7858669Abstract: There is provided a novel composition for an alignment film having excellent adhesiveness to a liquid crystal layer as well as to a substrate when a cycloolefin-based aligned film (COP) is used as the substrate instead of triacetyl cellulose (TAC) that is used as a conventional substrate for an optical film whose optical properties are significantly deteriorated when it is used under hot and humid environments. The composition for an alignment film that is used for splay alignment includes polyvinyl alcohol (PVA); 13 to 25% by weight of an aery late monomer based on the weight of the polyvinyl alcohol; 20 to 30 % by weight of a compatibilizing agent based on the weight of the acrylate monomer; and 10 to 50% by weight of an aqueous photo initiator based on the weight of the acrylate monomer.Type: GrantFiled: November 15, 2007Date of Patent: December 28, 2010Assignee: LG Chem, Ltd.Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
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Publication number: 20100296032Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.Type: ApplicationFiled: January 19, 2009Publication date: November 25, 2010Applicant: Johnson Matthey Public Limited CompanyInventors: Du-Hyun Shin, Byoung-Kun Jeon, Moon-Soo Park, Sung-Ho Chun, Heon Kim, Dai-Seung Choi, Dong-Woo Yoo
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Publication number: 20090312453Abstract: There is provided a novel composition for an alignment film having excellent adhesiveness to a liquid crystal layer as well as to a substrate when a cycloolefin-based aligned film (COP) is used as the substrate instead of triacetyl cellulose (TAC) that is used as a conventional substrate for an optical film whose optical properties are significantly deteriorated when it is used under hot and humid environments. The composition for an alignment film that is used for splay alignment includes polyvinyl alcohol (PVA); 13 to 25% by weight of an aery late monomer based on the weight of the polyvinyl alcohol; 20 to 30 % by weight of a compatibilizing agent based on the weight of the acrylate monomer; and 10 to 50% by weight of an aqueous photo initiator based on the weight of the acrylate monomer.Type: ApplicationFiled: November 15, 2007Publication date: December 17, 2009Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
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Publication number: 20090117293Abstract: There are provided an optical compensation film including an alignment film whose adhesiveness to a substrate and a liquid crystal layer and alignment property are excellent when a novel substrate is used to solve the problem regarding deteriorated durability being caused when a retardation film including a liquid crystal film is used under a hot and humid environment, and an integrated polarizing plate comprising the same. The O-plate includes a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that is composed of polyvinyl alcohol, a multifunctional acrylate monomer, a compatibilizing agent, a photo initiator and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film.Type: ApplicationFiled: November 15, 2007Publication date: May 7, 2009Inventors: Du-Hyun Shin, Chang-Hun Yun, Byoung-Kun Jeon, Moon-Soo Park
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Patent number: 7018470Abstract: The present invention provides a rubbing device including a base roller assembly that suspends and suspends and otherwise supports a base film to convey the same in one direction; a rubbing roller assembly that suspends and otherwise supports a rubbing cloth, and that moves the rubbing cloth in a direction opposite a conveying direction of the base film to thereby realize a rubbing treatment by contact between the rubbing cloth and the base film; and a rotating apparatus provided under the rubbing roller assembly and that rotates the entire rubbing roller assembly to a particular angle greater than 0° and up to and including 180° in the clockwise or counterclockwise direction with respect to the conveying direction of the base film.Type: GrantFiled: November 21, 2002Date of Patent: March 28, 2006Assignee: LG Chem, Ltd.Inventors: Jeong-Su Yu, Jong-Sung Park, Du-Hyun Shin, Kum-Suek Seo
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Publication number: 20040241326Abstract: The present invention provides a rubbing device including a base roller assembly that suspends and otherwise supports a base film to convey the same in one direction; a rubbing roller assembly that suspends and otherwise supports a rubbing cloth, and that moves the rubbing cloth in a direction opposite a conveying direction of the base film to thereby realize a rubbing treatment by contact between the rubbing cloth and the base film; and a rotating apparatus provided under the rubbing roller assembly and that rotates the entire rubbing roller assembly to a particular angle within the range of 0-180° in the clockwise or counterclockwise direction with respect to the conveying direction of the base film.Type: ApplicationFiled: July 10, 2003Publication date: December 2, 2004Inventors: Jeong-Su Yu, Jong-Sung Park, Du-Hyun Shin, Kum-Suek Seo