Patents by Inventor Han-Saem Kang
Han-Saem Kang 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: 20240053523Abstract: A polarizing plate and an optical display apparatus including the same are disclosed. A polarizing plate includes a polarizer and a protective film formed on a surface of the polarizer, wherein the polarizer has a thickness of 10 ?m or less and the polarizing plate has a coefficient of thermal expansion (CTE) of 100 ?m/(m·° C.) or less, as measured in a machine direction of the polarizer after application of heat shock conditions.Type: ApplicationFiled: July 17, 2023Publication date: February 15, 2024Inventors: Sung Man CHO, Seung Jun LEE, Seon Oh HWANG, Kwang Ho SHIN, Han Saem KANG, Do Won KIM
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Patent number: 11698476Abstract: A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes a polarizer and a protective film stacked on at least one surface of the polarizer, and the polarizer includes a hydrophobic polyvinyl alcohol resin, the polarizer has a surface roughness (Ra) of about 10 nm or less on a surface thereof facing the protective film, and the polarizing plate has a maximum metal ion-infiltration length of about 400 ?m or less between the polarizer and the protective film when metal powder-containing pastes are deposited on a surface of the polarizing plate in a thickness direction thereof and left at 60° C. and 95% relative humidity (RH) for 240 hours.Type: GrantFiled: August 6, 2021Date of Patent: July 11, 2023Assignee: Samsung SDI Co., Ltd.Inventors: Do Won Kim, Han Saem Kang, Kwang Ho Shin, Sung Man Cho, Eun Sol Cho, Seon Oh Hwang
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Publication number: 20230091995Abstract: Provided are a polarizer comprising a polyvinyl alcohol-based film and having an endothermic peak of 50° C. to 60° C. when measured by differential scanning calorimetry at a temperature increase rate of 10° C./min; a polarizing plate comprising a polarizer and a first protective film and a second protective film laminated on one surface and the other surface of the polarizer, respectively, and having an initial shrinkage initiation temperature greater than 70° C. and less than or equal to 90° C. during thermomechanical analysis; and an optical display device comprising same.Type: ApplicationFiled: February 8, 2021Publication date: March 23, 2023Inventors: Do Won KIM, Han Saem KANG, Mun Bo KO, Sung Man CHO, Ki Yong KIM, Eun Sol CHO
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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: 20220043188Abstract: A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes a polarizer and a protective film stacked on at least one surface of the polarizer, and the polarizer includes a hydrophobic polyvinyl alcohol resin, the polarizer has a surface roughness (Ra) of about 10 nm or less on a surface thereof facing the protective film, and the polarizing plate has a maximum metal ion-infiltration length of about 400 ?m or less between the polarizer and the protective film when metal powder-containing pastes are deposited on a surface of the polarizing plate in a thickness direction thereof and left at 60° C. and 95% relative humidity (RH) for 240 hours.Type: ApplicationFiled: August 6, 2021Publication date: February 10, 2022Inventors: Do Won KIM, Han Saem KANG, Kwang Ho SHIN, Sung Man CHO, Eun Sol CHO, Seon Oh HWANG
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Patent number: 10845640Abstract: Provided is a liquid crystal display device having a viewing-side polarizing plate, a liquid crystal panel and a light source-side polarizing plate, which are stacked sequentially, wherein the viewing-side polarizing plate comprises a first polarizer and a first protective film formed on a light output surface of the first polarizer, the light source-side polarizing plate comprises a second polarizer and a fourth protective film formed on a light incident surface of the second polarizer, and the TD shrinkage ratio of the fourth protective film is greater than the TD shrinkage ratio of the first protective film.Type: GrantFiled: July 10, 2018Date of Patent: November 24, 2020Assignee: Samsung SDI Co., Ltd.Inventors: Il Woong Baek, Yeon Ju Jung, Han Saem Kang, Yoo Jin Kim, Han Su Kim, Dong Yoon Shin
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Publication number: 20200174313Abstract: Provided is a liquid crystal display device having a viewing-side polarizing plate, a liquid crystal panel and a light source-side polarizing plate, which are stacked sequentially, wherein the viewing-side polarizing plate comprises a first polarizer and a first protective film formed on a light output surface of the first polarizer, the light source-side polarizing plate comprises a second polarizer and a fourth protective film formed on a light incident surface of the second polarizer, and the TD shrinkage ratio of the fourth protective film is greater than the TD shrinkage ratio of the first protective film.Type: ApplicationFiled: July 10, 2018Publication date: June 4, 2020Inventors: Il Woong BAEK, Yeon Ju JUNG, Han Saem KANG, Yoo Jin KIM, Han Su KIM, Dong Yoon SHIN
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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: 9358768Abstract: A polarizing plate, a method of preparing the same and a liquid crystal display apparatus including the same are disclosed. The polarizing plate includes a polarizer and a polyester film formed on a surface of the polarizer, wherein the polyester film has a ratio of an elongation ratio in a machine direction to an elongation ratio in a transverse direction of about 1:0.8 to about 1:1.2, an in-plane retardation (Re) of about 500 nm or less at a wavelength of 550 nm, and an out-of-plane retardation (Rth) of about 10,000 nm or less at a wavelength of 550 nm.Type: GrantFiled: December 16, 2013Date of Patent: June 7, 2016Assignee: SAMSUNG SDI CO., LTD.Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Jong Hyuk Eun, Hae Ryong Chung, Ae Kyoung Kim, Han Saem Kang, Han Su Kim, A Ra Jo
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Patent number: 9291850Abstract: A polarizing plate includes a polarizer, a retardation film on a first side (e.g., a lower side) of the polarizer, and a protective film on a second side (e.g., an upper side) of the polarizer. The retardation film has an axis distortion angle between a fast axis of the retardation film and an absorption axis of the polarizer of about +0.03° to less than +0.2°. The protective film has an in-plane phase difference (Ro) of greater than about 10,000 nm and about 15,000 nm or less at a wavelength of 550 nm. A liquid crystal display apparatus includes the polarizing plate.Type: GrantFiled: December 16, 2013Date of Patent: March 22, 2016Assignee: CHEIL INDUSTRIES INC.Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
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Patent number: 9012898Abstract: An electrophoretic display device includes: a first substrate having a plurality of pixels formed in a plurality of vertical pixel rows and a plurality of horizontal pixel rows; a plurality of data lines formed at every vertical pixel row of the first substrate; a thin film transistor (TFT) formed at each pixel of the first substrate and including a source electrode, a drain electrode, an organic semiconductor layer, and a gate electrode; a passivation layer formed on the TFTs and the data lines of the first substrate and including a first contact hole exposing the drain electrode of the TFT and a second contact hole exposing the gate electrode of the TFT; a pixel electrode formed on the passivation layer at each pixel of the first substrate and connected with the drain electrode of the TFT via the first contact hole of the passivation layer; a plurality of gate lines formed on the passivation layer at every horizontal pixel row of the first substrate and connected with the gate electrode of the TFT via the sType: GrantFiled: January 30, 2013Date of Patent: April 21, 2015Assignee: LG Display Co., Ltd.Inventors: Min-Joo Kim, Ho-Cheol Kang, Dae-Won Kim, Young-Hoon Noh, Han-Saem Kang
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Publication number: 20140168767Abstract: A polarizing plate, a method of preparing the same and a liquid crystal display apparatus including the same are disclosed. The polarizing plate includes a polarizer and a polyester film formed on a surface of the polarizer, wherein the polyester film has a ratio of an elongation ratio in a machine direction to an elongation ratio in a transverse direction of about 1:0.8 to about 1:1.2, an in-plane retardation (Re) of about 500 nm or less at a wavelength of 550 nm, and an out-of-plane retardation (Rth) of about 10,000 nm or less at a wavelength of 550 nm.Type: ApplicationFiled: December 16, 2013Publication date: June 19, 2014Applicant: CHEIL INDUSTRIES INC.Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Jong Hyuk Eun, Hae Ryong Chung, Ae Kyoung Kim, Han Saem Kang, Han Su Kim, A Ra Jo
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Publication number: 20140168579Abstract: A polarizing plate includes a polarizer, a retardation film on a first side (e.g., a lower side) of the polarizer, and a protective film on a second side (e.g., an upper side) of the polarizer. The retardation film has an axis distortion angle between a fast axis of the retardation film and an absorption axis of the polarizer of about +0.03° to less than +0.2°. The protective film has an in-plane phase difference (Ro) of greater than about 10,000 nm and about 15,000 nm or less at a wavelength of 550 nm. A liquid crystal display apparatus includes the polarizing plate.Type: ApplicationFiled: December 16, 2013Publication date: June 19, 2014Applicant: CHEIL INDUSTRIES INC.Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
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Patent number: 8377735Abstract: An electrophoretic display device includes: a first substrate having a plurality of pixels formed in a plurality of vertical pixel rows and a plurality of horizontal pixel rows; a plurality of data lines formed at every vertical pixel row of the first substrate; a thin film transistor (TFT) formed at each pixel of the first substrate and including a source electrode, a drain electrode, an organic semiconductor layer, and a gate electrode; a passivation layer formed on the TFTs and the data lines of the first substrate and including a first contact hole exposing the drain electrode of the TFT and a second contact hole exposing the gate electrode of the TFT; a pixel electrode formed on the passivation layer at each pixel of the first substrate and connected with the drain electrode of the TFT via the first contact hole of the passivation layer; a plurality of gate lines formed on the passivation layer at every horizontal pixel row of the first substrate and connected with the gate electrode of the TFT via the sType: GrantFiled: November 13, 2009Date of Patent: February 19, 2013Assignee: LG Display Co. Ltd.Inventors: Min-Joo Kim, Ho-Cheol Kang, Dae-Won Kim, Young-Hoon Noh, Han-Saem Kang
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Publication number: 20100127249Abstract: An electrophoretic display device includes: a first substrate having a plurality of pixels formed in a plurality of vertical pixel rows and a plurality of horizontal pixel rows; a plurality of data lines formed at every vertical pixel row of the first substrate; a thin film transistor (TFT) formed at each pixel of the first substrate and including a source electrode, a drain electrode, an organic semiconductor layer, and a gate electrode; a passivation layer formed on the TFTs and the data lines of the first substrate and including a first contact hole exposing the drain electrode of the TFT and a second contact hole exposing the gate electrode of the TFT; a pixel electrode formed on the passivation layer at each pixel of the first substrate and connected with the drain electrode of the TFT via the first contact hole of the passivation layer; a plurality of gate lines formed on the passivation layer at every horizontal pixel row of the first substrate and connected with the gate electrode of the TFT via the sType: ApplicationFiled: November 13, 2009Publication date: May 27, 2010Inventors: Min-Joo Kim, Ho-Cheol KANG, Dae-Won KIM, Young-Hoon NOH, Han-Saem KANG