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).

  • Publication number: 20240053523
    Abstract: 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: Application
    Filed: July 17, 2023
    Publication date: February 15, 2024
    Inventors: Sung Man CHO, Seung Jun LEE, Seon Oh HWANG, Kwang Ho SHIN, Han Saem KANG, Do Won KIM
  • Patent number: 11698476
    Abstract: 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: Grant
    Filed: August 6, 2021
    Date of Patent: July 11, 2023
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Do Won Kim, Han Saem Kang, Kwang Ho Shin, Sung Man Cho, Eun Sol Cho, Seon Oh Hwang
  • Publication number: 20230091995
    Abstract: 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: Application
    Filed: February 8, 2021
    Publication date: March 23, 2023
    Inventors: Do Won KIM, Han Saem KANG, Mun Bo KO, Sung Man CHO, Ki Yong KIM, Eun Sol CHO
  • Patent number: 11499933
    Abstract: 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: Grant
    Filed: May 17, 2018
    Date of Patent: November 15, 2022
    Assignees: LG DISPLAY CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: 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
  • Publication number: 20220043188
    Abstract: 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: Application
    Filed: August 6, 2021
    Publication date: February 10, 2022
    Inventors: Do Won KIM, Han Saem KANG, Kwang Ho SHIN, Sung Man CHO, Eun Sol CHO, Seon Oh HWANG
  • Patent number: 10845640
    Abstract: 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: Grant
    Filed: July 10, 2018
    Date of Patent: November 24, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Il Woong Baek, Yeon Ju Jung, Han Saem Kang, Yoo Jin Kim, Han Su Kim, Dong Yoon Shin
  • Publication number: 20200174313
    Abstract: 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: Application
    Filed: July 10, 2018
    Publication date: June 4, 2020
    Inventors: Il Woong BAEK, Yeon Ju JUNG, Han Saem KANG, Yoo Jin KIM, Han Su KIM, Dong Yoon SHIN
  • Publication number: 20200166469
    Abstract: 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: Application
    Filed: May 17, 2018
    Publication date: May 28, 2020
    Applicants: LG Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University
    Inventors: 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
  • Patent number: 10474000
    Abstract: 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: Grant
    Filed: June 21, 2017
    Date of Patent: November 12, 2019
    Assignees: LG Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Sung-Pil Ryu, Wook-Sung Kim, Han-Saem Kang, Ki-Seok Chang, Yong-Hyub Won, Jun-Sik Lee, Doo-Seub Shin
  • Publication number: 20170363930
    Abstract: 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: Application
    Filed: June 21, 2017
    Publication date: December 21, 2017
    Inventors: Sung-Pil RYU, Wook-Sung KIM, Han-Saem KANG, Ki-Seok CHANG, Yong-Hyub WON, Jun-Sik LEE, Doo-Seub SHIN
  • Patent number: 9358768
    Abstract: 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: Grant
    Filed: December 16, 2013
    Date of Patent: June 7, 2016
    Assignee: 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
  • Patent number: 9291850
    Abstract: 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: Grant
    Filed: December 16, 2013
    Date of Patent: March 22, 2016
    Assignee: CHEIL INDUSTRIES INC.
    Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
  • Patent number: 9012898
    Abstract: 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 s
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 21, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Min-Joo Kim, Ho-Cheol Kang, Dae-Won Kim, Young-Hoon Noh, Han-Saem Kang
  • Publication number: 20140168767
    Abstract: 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: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: 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
  • Publication number: 20140168579
    Abstract: 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: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ae Kyoung Kim, Han Saem Kang, Han Su Kim, Dong Yoon Shin, A Ra Jo, Hae Ryong Chung
  • Patent number: 8377735
    Abstract: 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 s
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: February 19, 2013
    Assignee: LG Display Co. Ltd.
    Inventors: Min-Joo Kim, Ho-Cheol Kang, Dae-Won Kim, Young-Hoon Noh, Han-Saem Kang
  • Publication number: 20100127249
    Abstract: 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 s
    Type: Application
    Filed: November 13, 2009
    Publication date: May 27, 2010
    Inventors: Min-Joo Kim, Ho-Cheol KANG, Dae-Won KIM, Young-Hoon NOH, Han-Saem KANG