Patents by Inventor Yeong-Rae Chang
Yeong-Rae Chang 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: 12130456Abstract: An optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.Type: GrantFiled: January 31, 2020Date of Patent: October 29, 2024Assignee: LG CHEM, LTD.Inventors: Na Young Shin, Kyun Il Rah, Jin Seok Byun, Yeong Rae Chang
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Patent number: 12129348Abstract: A hard coating film comprising a base layer including: a polymer binder resin; first inorganic particles dispersed in the polymer binder resin and having an average particle size of 5 nm or more and less than 70 nm; and second inorganic particles which are dispersed in the polymer binder resin and have an average particle size of 70 nm to 150 nm is provided.Type: GrantFiled: February 4, 2020Date of Patent: October 29, 2024Assignee: LG CHEM, LTD.Inventors: Jin Seok Byun, Byung Joon Chae, Jae Young Kim, Yeong Rae Chang, Yun U Shin
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Patent number: 12124068Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.Type: GrantFiled: January 31, 2020Date of Patent: October 22, 2024Assignee: LG Chem, Ltd.Inventors: Jin Seok Byun, Yeong Rae Chang, Na Young Shin, Dong Hyun Kim, Kyun Il Rah
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Patent number: 12124067Abstract: An optical laminate, including: a polarizing layer; and a porous layer formed on at least one side of the polarizing layer, wherein the polarizing layer includes zinc component, and wherein an absolute value of a change in an amount of color coordinate a* of CIE L*a*b* according to Equation 1 is 2 or less: ?a*=a*a?a*i??[Equation 1] wherein ?a* is the change in the amount of the color coordinate a*, a*a is a color coordinate a* of the optical laminate after maintaining the optical laminate at 105° C. for 250 hours under a state where both top and bottom surfaces of the optical laminate come in contact with glass substrates, and a*i is a color coordinate a* of the optical laminate before maintaining the optical laminate at 105° C. for 250 hours.Type: GrantFiled: January 31, 2020Date of Patent: October 22, 2024Assignee: LG Chem, Ltd.Inventors: Na Young Shin, Kyun Il Rah, Jin Seok Byun, Yeong Rae Chang
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Patent number: 12083771Abstract: An optical laminate or a reddening-resistant layer. The optical laminate does not cause a reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.Type: GrantFiled: January 31, 2020Date of Patent: September 10, 2024Assignee: LG CHEM, LTD.Inventors: Na Young Shin, Kyun Il Rah, Jin Seok Byun, Yeong Rae Chang
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Patent number: 12025822Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.Type: GrantFiled: January 31, 2020Date of Patent: July 2, 2024Assignee: LG Chem, Ltd.Inventors: Jin Seok Byun, Yeong Rae Chang, Na Young Shin, In Young Song, Kyun Il Rah
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Patent number: 12019256Abstract: An optical laminate that does not cause a reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.Type: GrantFiled: January 31, 2020Date of Patent: June 25, 2024Assignee: LG CHEM, LTD.Inventors: Na Young Shin, Kyun Il Rah, Jin Seok Byun, Kyung Ki Hong, Yeong Rae Chang
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Publication number: 20230420644Abstract: Provided is a method for manufacturing an electrode for an electrochemical device comprising (S1) coating a slurry comprising a binder polymer and a conductive material on at least one surface of a current collector and drying to form an attachment enhancing layer; (S2) preparing a free-standing dry electrode film comprising a dry electrode active material and a dry binder; and (S3) stacking the free-standing dry electrode film on the attachment enhancing layer and applying heat and pressure in order to allow the binder polymer to permeate into a surface layer of the free-standing dry electrode film in contact with the attachment enhancing layer in order to adhere the free-standing dry electrode film to the attachment enhancing layer. Further provided are an electrode and a lithium secondary battery including the same.Type: ApplicationFiled: February 8, 2022Publication date: December 28, 2023Applicant: LG Chem, Ltd.Inventors: Min-Soo Kim, Su-Jin Kim, Jung-Hyun Seo, Yeong-Rae 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: 11681154Abstract: A wearable device which is lighter, relatively safer at the time of breakage, and smaller than a wearable device having a lens substrate that is a glass substrate.Type: GrantFiled: December 11, 2018Date of Patent: June 20, 2023Assignee: LG CHEM, LTD.Inventors: Hye Min Kim, Yong Suk Kim, Boo Kyung Kim, Yeong Rae Chang, Bu Gon Shin, So Young Choo
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Patent number: 11680172Abstract: The present invention relates to a photocurable coating composition for forming a low refractive layer, a method for preparing an antireflection film using the photocurable coating composition, and an anti-reflective film prepared by using the photocurable coating composition. According to the present invention, a low refractive layer is formed of a photocurable coating composition containing two or more types of photo-polymerizable compounds, a photoinitiator, surface-treated hollow inorganic nanoparticles, and surface-treated solid inorganic nanoparticles.Type: GrantFiled: February 14, 2017Date of Patent: June 20, 2023Assignee: LG Chem, Ltd.Inventors: Jin Seok Byun, Jae Young Kim, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang
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Patent number: 11648710Abstract: A method for manufacturing a plastic substrate having excellent thickness uniformity, and a plastic substrate having excellent thickness uniformity manufactured thereby.Type: GrantFiled: November 2, 2018Date of Patent: May 16, 2023Assignee: LG CHEM, LTD.Inventors: Yong Suk Kim, Hye Min Kim, Boo Kyung Kim, Yeong Rae Chang, Young Tae Kim, Ji Young Kim
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Patent number: 11614567Abstract: The present invention relates to a low refractive layer and an anti-reflective film comprising the same. The low refractive layer can exhibit excellent optical properties such as a low reflectance and a high light transmittance, and excellent mechanical properties such as high wear resistance and scratch resistance at the same time, without adversely affecting the color of the polymer resin forming the low refractive layer. In particular, due to the excellent alkali resistance, the low refractive layer can maintain excellent physical properties even after alkali treatment. Therefore, when introducing a low refractive layer to the display device, it is expected that the production process can be simplified and further the production rate and the productivity can significantly increase.Type: GrantFiled: July 6, 2020Date of Patent: March 28, 2023Assignee: LG CHEM, LTD.Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Eun Kyu Her, Jin Seok Byun
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Patent number: 11591498Abstract: The present invention relates to a flexible film, more specifically, to a flexible film that not only exhibits high hardness, but also has excellent flexibility. According to the flexible film of the present invention, flexibility, bendability, high hardness, scratch resistance, and high transparency are exhibited, and there is no concern for damage of the film even when bended repeatedly or folded for a long time, and thus, it may be usefully applied for the front panels, display parts of bendable, flexible, rollable, or foldable mobile devices, display devices, various instrument panels, and the like.Type: GrantFiled: September 19, 2018Date of Patent: February 28, 2023Assignee: LG CHEM, LTD.Inventors: Jin Kuk Lee, Jin Young Park, Soon Hwa Jung, Yeong Rae Chang, Jung Hyun Seo, Hye Min Kim
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Patent number: 11578189Abstract: The present invention relates to an optical film exhibiting excellent optical properties such as low gloss value and reflectance, and an appropriate level of haze properties, and to an image display device including the same. The optical film comprises: a light-transmitting substrate film; an antiglare layer including a binder containing a (meth)acrylate-based crosslinked polymer, and organic fine particles of a micron (?m) scale dispersed on the binder and inorganic fine particles of a nanometer (nm) scale dispersed on the binder; and a low refractive index layer which is formed on the antiglare layer and includes a binder resin containing a (co)polymer of a photopolymerizable compound, and hollow silica particles dispersed in the binder resin, wherein the organic and inorganic fine particles exhibit a predetermined particle size distribution, refractive index difference, and content range.Type: GrantFiled: December 12, 2017Date of Patent: February 14, 2023Assignee: LG CHEM, LTD.Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
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Patent number: 11555947Abstract: The present invention relates to a low refractive layer and an anti-reflective film comprising the same. The low refractive layer can exhibit excellent optical properties such as a low reflectance and a high light transmittance, and excellent mechanical properties such as high wear resistance and scratch resistance at the same time. In particular, due to the excellent alkali resistance, the low refractive layer can maintain excellent physical properties even after alkali treatment. Therefore, when introducing a low refractive layer to the display device, it is expected that the production process can be simplified and further the production rate and the productivity can significantly increase.Type: GrantFiled: January 3, 2020Date of Patent: January 17, 2023Assignee: LG Chem, Ltd.Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Jin Seok Byun
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Patent number: 11555124Abstract: The present invention relates to an optical film including a light-transmitting substrate film such as a polyester-based substrate film and an antiglare layer, and more specifically, to an optical film capable of effectively suppressing the occurrence of interference fringes derived from the substrate film, realizing excellent antiglare properties, and having excellent scratch resistance, and excellent adhesion between the substrate film and the antiglare layer, and the like, and to an image display device including the same.Type: GrantFiled: December 12, 2017Date of Patent: January 17, 2023Assignee: LG CHEM, LTD.Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
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Patent number: 11548992Abstract: The present invention relates to an antireflection film. The antireflection film includes a low refractive index layer having excellent alkali resistance and exhibiting remarkably improved mechanical properties such as scratch resistance and impact resistance as well as reduction of a glare phenomenon, and a base film exhibiting excellent mechanical strength and water resistance in spite of a thin thickness and having no fear of interference fringes occurring. Therefore, such antireflection film can be used as a protective film of a polarizing plate or used as any other component so as to provide a thin display device, and furthermore, can effectively prevent the glare phenomenon of the display device, and can more improve the durability and lifespan thereof.Type: GrantFiled: March 18, 2021Date of Patent: January 10, 2023Assignee: LG CHEM, LTD.Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Jin Seok Byun
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Patent number: 11485876Abstract: The present invention relates to a resin composition for forming an optical film, an optical film, and a polarizing plate, in which the resin composition for forming an optical film improves adhesion between an antiglare layer and a light-transmitting substrate film and enables the antiglare layer and the optical film to exhibit excellent optical properties such as appropriate haze, low gloss value, and excellent antiglare properties.Type: GrantFiled: December 18, 2017Date of Patent: November 1, 2022Assignee: LG CHEM, LTD.Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
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Patent number: 11415726Abstract: Described herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed in the binder resin. The hollow and solid inorganic particles are dispersed in the low-refractive layer such that the amount of the solid inorganic nanoparticles positioned close to an interface between the hard coating layer and the low-refractive layer is larger than that of the hollow inorganic nanoparticles. Also described is a manufacturing method of the anti-reflective film including: applying a resin composition containing a photopolymerizable compound or a (co)polymer thereof, a fluorine-containing compound including a photoreactive functional group, a photoinitiator, hollow inorganic nanoparticles, and solid inorganic nanoparticles on a hard coating layer, and drying the applied resin composition at a temperature of 35° C. to 100° C.; and photocuring the dried resin composition.Type: GrantFiled: March 16, 2020Date of Patent: August 16, 2022Assignee: LG CHEM, LTD.Inventors: Jin Seok Byun, Heon Kim, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang