Patents by Inventor Jang-Yeon Hwang
Jang-Yeon Hwang 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: 11591445Abstract: Provided is a barrier film and a manufacturing method thereof. The barrier film has a structure comprising a polysilazane barrier layer, which can exhibit excellent running properties in a so-called roll-to-roll process or the like, and can maintain or improve the performance of the barrier layer even during an unwinding and/or winding process, and the like.Type: GrantFiled: April 25, 2019Date of Patent: February 28, 2023Assignee: LG CHEM, LTD.Inventors: Bo Ra Park, Beom Gwon Son, Hee Joon Jeong, Jang Yeon Hwang
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Patent number: 11508937Abstract: Provided is a light-diffusing barrier film. The film is an integral film comprising a barrier layer, a base layer and a light-diffusing layer, sequentially. The film can prevent moisture penetration into a device such as an organic light emitting device, and also imparts a light-diffusing function to the device. In particular, the film can have excellent moisture blocking properties even after a roll-to-roll process.Type: GrantFiled: April 17, 2019Date of Patent: November 22, 2022Assignee: LG CHEM, LTD.Inventors: Hee Joon Jeong, Jang Yeon Hwang, Bo Ra Park, Sung Jin Shin, Hee Wang Yang
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Patent number: 11458703Abstract: Provided is a barrier film that includes a base layer (A), and a barrier layer (B) located on one side of the base layer and including one or more cured layers of polysilazane layers having a surface (S) of a concavo-convex structure formed by protruding particles, the barrier film having excellent barrier properties against the external environment, and excellent optical properties. The barrier film can be used for an electronic product sensitive to moisture.Type: GrantFiled: November 28, 2018Date of Patent: October 4, 2022Assignee: LG CHEM, LTD.Inventors: Hee Joon Jeong, Jang Yeon Hwang, Bo Ra Park, Sung Jin Shin, Hee Wang Yang
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Patent number: 11437617Abstract: Other Metals are uniformly doped in a sodium transition metal oxide particle to obtain a cathode active material. As a result, it is possible to improve the battery performance by improving the physical properties of the material itself and stabilizing the structure during the charge/discharge process as well as electrochemical properties.Type: GrantFiled: July 20, 2018Date of Patent: September 6, 2022Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Yang Kook Sun, Jang Yeon Hwang
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Patent number: 11367867Abstract: Provided are a positive electrode for a metal-sulfur battery, a method of manufacturing the same, and a metal-sulfur battery including the same. The positive electrode comprises a positive electrode active material layer including carbon material and sulfur-containing material. In the positive electrode active material layer, a region in which the sulfur-containing material is densified and a region in which the carbon material is densified are arranged separately. By providing a positive electrode capable of exhibiting a high utilization rate of sulfur, it is possible to provide a metal-sulfur battery having high capacity and stable life characteristics.Type: GrantFiled: September 4, 2018Date of Patent: June 21, 2022Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Yang Kook Sun, Jang Yeon Hwang
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Patent number: 11283049Abstract: A barrier film including a first layer formed of a semicovalent inorganic material and a second layer formed of an ionic inorganic material is provided. Here, the first layer and the second layer are alternately disposed. The barrier film having an improved moisture barrier property compared to a gas-barrier plastic composite film of the prior art manufactured using only a metal oxide or nitride may be provided.Type: GrantFiled: December 3, 2010Date of Patent: March 22, 2022Assignee: LG CHEM, LTD.Inventors: Jang Yeon Hwang, Dong Ryul Kim, Seoung Lac Ma
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Publication number: 20220064395Abstract: Provided is a barrier film, comprising: a base layer; and an inorganic layer including a first region and a second region, which have different elemental contents (atomic %) of Si, N, and O from each other as measured by XPS, and having a compactness expressed through an etching rate of 0.17 nm/s or less in the thickness direction for an Ar ion etching condition to etch Ta2O5 at a rate of 0.09 nm/s, wherein the second region has a higher elemental content of N than that of the first region, the first region has a thickness of 50 nm or more, and the ratio (d1/d2) of the thickness (d1) of the first region to the thickness (d2) of the second region is 2 or less, the barrier film having excellent barrier properties and optical properties. The barrier film can be used for electronic products sensitive to moisture or the like.Type: ApplicationFiled: October 22, 2019Publication date: March 3, 2022Inventors: Sung Jin SHIN, Jang Yeon HWANG, Hee Joon JEONG, Bo Ra PARK, Hee Wang YANG
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Publication number: 20210387855Abstract: Provided is a barrier film, comprising: a base layer; and an inorganic layer including Si, N, and O, wherein the inorganic layer has a thickness of 600 nm or less, and the film has a water vapor transmission rate of 0.5×10?3 g/m2·day as measured under conditions of a temperature of 38° C. and 100% relative humidity. The barrier film has excellent barrier properties and optical properties and can be used for electronic products sensitive to moisture.Type: ApplicationFiled: October 22, 2019Publication date: December 16, 2021Inventors: Sung Jin SHIN, Jang Yeon HWANG, Hee Joon JEONG, Bo Ra PARK, Hee Wang YANG
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Publication number: 20210381109Abstract: Provided is a barrier film comprising a base layer, and an inorganic layer including Si, N, and O, and including a first region and a second region, which have different elemental contents (atomic %) of Si, N, and O from each other as measured by XPS, wherein the film has a water vapor transmission rate of 5.0×10?4 g/m2·day or less as measured under conditions of a temperature of 38° C. and 100% relative humidity after being stored at 85° C. and 85% relative humidity conditions for 250 hours, or wherein the inorganic layer has a compactness expressed through an etching rate of 0.17 nm/s in the thickness direction for an Ar ion etching condition to etch Ta2O5 at a rate of 0.09 nm/s. The barrier film has excellent barrier properties and optical properties and can be used for electronic products that are sensitive to moisture and the like.Type: ApplicationFiled: October 22, 2019Publication date: December 9, 2021Inventors: Sung Jin SHIN, Jang Yeon HWANG, Hee Joon JEONG, Bo Ra PARK, Hee Wang YANG
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Publication number: 20210367234Abstract: Other Metals are uniformly doped in a sodium transition metal oxide particle to obtain a cathode active material. As a result, it is possible to improve the battery performance by improving the physical properties of the material itself and stabilizing the structure during the charge/discharge process as well as electrochemical properties.Type: ApplicationFiled: July 20, 2017Publication date: November 25, 2021Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Yang Kook SUN, Jang Yeon HWANG
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Publication number: 20210340345Abstract: Provided is a barrier film, comprising a base layer and an inorganic layer including a first region and a second region, which have different elemental contents (atomic %) of Si, N, and O from each other as measured by XPS, and having a compactness expressed through an etching rate of 0.17 nm/s in the thickness direction for an Ar ion etching condition to etch Ta2O5 at a rate of 0.09 nm/s, wherein the second region has a higher elemental content of N than that of the first region, and the second region has a thickness of 10% or more relative to the total thickness of the inorganic layer. The barrier film has excellent barrier properties and optical properties and can be used for electronic products which are sensitive to moisture and the like.Type: ApplicationFiled: October 22, 2019Publication date: November 4, 2021Inventors: Sung Jin SHIN, Jang Yeon HWANG, Hee Joon JEONG, Bo Ra PARK, Hee Wang YANG
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Patent number: 11008431Abstract: The present application relates to a method for preparing a barrier film. The present application can provide a method for preparing a barrier film having excellent barrier characteristics and optical performances. The barrier film produced by the method of the present application can be effectively used not only for packaging material for food or medicine, and the like, but also for various applications, such as LCDs (Liquid Crystal Displays) or a solar cells, substrates for electronic papers or OLEDs (Organic Light Emitting Diodes) or sealing films.Type: GrantFiled: March 31, 2017Date of Patent: May 18, 2021Assignee: LG CHEM, LTD.Inventors: Sung Jin Shin, Dong Ryul Kim, Jang Yeon Hwang
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Publication number: 20210114331Abstract: Provided is a barrier film that includes a base layer (A), and a barrier layer (B) located on one side of the base layer and including one or more cured layers of polysilazane layers having a surface (S) of a concavo-convex structure formed by protruding particles, the barrier film having excellent barrier properties against the external environment, and excellent optical properties. The barrier film can be used for an electronic product sensitive to moisture etc.Type: ApplicationFiled: November 28, 2018Publication date: April 22, 2021Inventors: Hee Joon JEONG, Jang Yeon HWANG, Bo Ra PARK, Sung Jin SHIN, Hee Wang YANG
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Publication number: 20210119179Abstract: Provided is a light-diffusing barrier film. The film is an integral film comprising a barrier layer, a base layer and a light-diffusing layer, sequentially. The film can prevent moisture penetration into a device such as an organic light emitting device, and also imparts a light-diffusing function to the device. In particular, the film can have excellent moisture blocking properties even after a roll-to-roll process.Type: ApplicationFiled: April 17, 2019Publication date: April 22, 2021Inventors: Hee Joon JEONG, Jang Yeon HWANG, Bo Ra PARK, Sung Jin SHIN, Hee Wang YANG
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Publication number: 20210001609Abstract: The present application provides a barrier film and a method for manufacturing same. The barrier film, as a structure including a polysilazane barrier layer, may exhibit excellent running properties in a so-called roll-to-roll process, and the performance of the barrier layer may be maintained or improved even during a unwinding and/or winding process.Type: ApplicationFiled: April 25, 2019Publication date: January 7, 2021Inventors: Bo Ra PARK, Beom Gwon SON, Hee Joon JEONG, Jang Yeon HWANG
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Patent number: 10858537Abstract: The present application relates to gas barrier film having excellent adhesive strength and a method of manufacturing the same. Particularly, the present application is directed to providing a gas barrier film having excellent adhesion performance between an inorganic layer and a protective coating layer under harsh conditions by protective coating layer including inorganic nano particles surface-modified with organic silane on the inorganic layer.Type: GrantFiled: November 26, 2014Date of Patent: December 8, 2020Assignee: LG CHEM, LTD.Inventors: Sang Uk Ryu, Dong Ryul Kim, Seung Lac Ma, Jang Yeon Hwang, Jong Min Moon
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Publication number: 20200350564Abstract: Provided are a positive electrode for a metal-sulfur battery, a method of manufacturing the same, and a metal-sulfur battery including the same. The positive electrode comprises a positive electrode active material layer including carbon material and sulfur-containing material. In the positive electrode active material layer, a region in which the sulfur-containing material is densified and a region in which the carbon material is densified are arranged separately. By providing a positive electrode capable of exhibiting a high utilization rate of sulfur, it is possible to provide a metal-sulfur battery having high capacity and stable life characteristics.Type: ApplicationFiled: September 4, 2018Publication date: November 5, 2020Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Yang Kook SUN, Jang Yeon HWANG
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Patent number: 10654070Abstract: The present application relates to a method for preparing a barrier film. The present application can provide a method for preparing a barrier film having excellent barrier characteristics and optical performances. The barrier film produced by the method of the present application can be effectively used not only for packaging materials of as foods or medicines, and the like, but also for various applications, such as members for FPDs (flat panel displays) such as LCDs (Liquid Crystal Displays) or solar cells, substrates for electronic papers or OLEDs (Organic Light Emitting Diodes), or sealing films.Type: GrantFiled: March 31, 2017Date of Patent: May 19, 2020Assignee: LG CHEM, LTD.Inventors: Hee Wang Yang, Jang Yeon Hwang, Seong Hwan Lee
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Patent number: 10364499Abstract: Provided are a roll, a film forming apparatus, and a film forming method. The present invention provides a roll used in an apparatus which may transfer a substrate, e.g., a flexible substrate such as a plastic film and a fibrous or metallic web or film and may form a film on a surface of the substrate, a film forming apparatus including the roll, and a film forming method using the film forming apparatus.Type: GrantFiled: December 2, 2013Date of Patent: July 30, 2019Assignee: LG CHEM, LTD.Inventors: Seong Hwan Lee, Dong Ryul Kim, Jang Yeon Hwang
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Publication number: 20190106595Abstract: The present application relates to a method for preparing a barrier film. The present application can provide a method for preparing a barrier film having excellent barrier characteristics and optical performances. The barrier film produced by the method of the present application can be effectively used not only for packaging material for food or medicine, and the like, but also for various applications, such as LCDs (Liquid Crystal Displays) or a solar cells, substrates for electronic papers or OLEDs (Organic Light Emitting Diodes) or sealing films.Type: ApplicationFiled: March 31, 2017Publication date: April 11, 2019Inventors: Sung Jin SHIN, Dong Ryul KIM, Jang Yeon HWANG