Patents by Inventor Dong Hyun Oh

Dong Hyun Oh 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).

  • Reflective liquid crystal device and use thereof
    Patent number: 10473995
    Abstract: A liquid crystal device and the use thereof are provided. The liquid crystal device has an advantage in terms of power consumption since a normally transparent mode may be realized in a state in which an external electric field is not applied, and can exhibit an excellent light blocking characteristic when an external electric field is applied.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jin Hong Kim, Dong Hyun Oh, Sung Joon Min, Jung Sun You, Jung Woon Kim, Eun Jung Lim
  • Method for preparing liquid crystal capsule
    Patent number: 10423023
    Abstract: A method of preparing a liquid crystal capsule and the use of the liquid crystal capsule. The liquid crystal capsule has advantages in that transmittance and stability are improved and the degree of scattering is uniform.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 24, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Dong Hyun Oh, Sung Joon Min, Jung Sun You, Kyung Jun Kim
  • Liquid crystal device
    Patent number: 10370591
    Abstract: Provided are a liquid crystal device, a composition capable of forming a liquid crystal layer, a method of manufacturing the liquid crystal device, a system for manufacturing the liquid crystal device, and a use of the liquid crystal device. The liquid crystal device is a device capable of exhibiting, for example, a normally white or black mode, exhibiting a high contrast ratio, driven with a low driving voltage, and exhibiting excellent durability such as thermal stability. Such a liquid crystal device may be applied to various optical modulators such as a smart window, a window protective film, a flexible display device, an active retarder for displaying 3D images, or a viewing angle control film.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: August 6, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Jung Sun You, Dong Hyun Oh
  • Liquid crystal device
    Patent number: 10329485
    Abstract: A liquid crystal device, a precursor composition, a method of manufacturing a liquid crystal device, an apparatus of manufacturing a liquid crystal device, and use of the liquid crystal device are provided. A device capable of being driven at a low driving voltage can be provided. The device can be realized so that the device can be driven in a normally transparent mode or a normally black mode. Also, the device has other excellent characteristics such as a contrast ratio. Such a liquid crystal device can be applied to various light modulation devices such as smart windows, window-protecting films, flexible display devices, active retarders for displaying 3D images, or viewing angle-adjusting films.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 25, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Dong Hyun Oh, Jung Sun You, Jin Hong Kim
  • LIQUID CRYSTAL CELL
    Publication number: 20190112529
    Abstract: The present application relates to a liquid crystal cell and a use of the liquid crystal cell. The present application can provide a liquid crystal cell which is capable of switching between a transparent mode and a scattering mode by using a non-ionic compound as a liquid crystal additive for realizing the EHDI characteristics and has excellent performance such as a driving voltage characteristic, a haze characteristic and reliability by securing solubility of the additive for liquid crystals. Such a liquid crystal cell can be applied to various light modulation devices such as a smart window, a window protective film, a flexible display device, a light shielding plate for transparent display, an active retarder for 3D image display, or a viewing angle adjusting film.
    Type: Application
    Filed: August 25, 2016
    Publication date: April 18, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woon Kim, Eun Jung Lim, Dong Hyun Oh
  • TRANSMITTANCE-VARIABLE FILM
    Publication number: 20190049641
    Abstract: A transmittance-variable film and the use thereof are provided. The transmittance-variable film can be useful in switching between a clear state and a dark state and reducing a difference in contrast ratio between left and right viewing angles, thereby securing excellent bilateral symmetry. Such a transmittance-variable film can be applied to various applications including various materials for buildings or vehicles requiring the control of transmissivity, or eyewear such as goggles for sports or experiencing augmented realities, sunglasses, helmets, etc.
    Type: Application
    Filed: April 14, 2017
    Publication date: February 14, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hyun Oh, Jung Sun You, Eun Jung Lim, In Ju Mun, Kyung Ki Hong, Kum Suek Seo, Hyo Jin Lee
  • Liquid crystal device
    Patent number: 10203539
    Abstract: The present invention relates to a liquid crystal device, a method of manufacturing the liquid crystal device, and the use of the liquid crystal device. The liquid crystal device according to the present invention has excellent light shielding rate variability characteristics. Such a liquid crystal device can be applied to various optical modulation devices such as a smart window, a window protection film, a flexible display device, an active retarder for displaying a 3D image, or a viewing angle adjustment film.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: February 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jung Woon Kim, Sung Joon Min, Jung Sun You, Jin Hong Kim, Eun Jung Lim, Dong Hyun Oh
  • Liquid crystal element
    Patent number: 10196550
    Abstract: The present application relates to a liquid crystal element and a use of the liquid crystal element. The exemplary liquid crystal element of the present application is, for example, an element capable of realizing a normally transparent mode, having a high contrast ratio, and being driven with a low driving voltage. Such a liquid crystal element may be applied in a variety of light modulators including a smart window, a window protective film, a flexible display element, an active retarder for displaying a 3D image and a viewing angle controlling film.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: February 5, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jin Hong Kim, Jung Woon Kim, Dong Hyun Oh, Jung Sun You
  • NOVEL LIQUID CRYSTAL COMPOUND AND USE THEREOF
    Publication number: 20190016956
    Abstract: The present application relates to a novel liquid crystal compound and a use thereof. The novel liquid crystal compounds of the present application can exhibit a smectic A phase over a wide temperature range. The novel liquid crystal compounds of the present application can be usefully used in the technical fields to which smectic A liquid crystals can be applied, for example, bistable devices.
    Type: Application
    Filed: May 23, 2017
    Publication date: January 17, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Eun Jung Lim, Ki Chul Koo, Dong Hyun Oh
  • LIQUID CRYSTAL DEVICE
    Publication number: 20180373068
    Abstract: The present application relates to a liquid crystal device. The liquid crystal device of the present application may realize a transparent white state, a transparent black state and a scattering state according to a frequency and/or level of an applied voltage. The liquid crystal device may be applied to, for example, a window of a vehicle, a smart window, a window protective film, a display, a light cutoff panel for a display, an active retarder for a 3D image display or a viewing angle controlling film.
    Type: Application
    Filed: March 31, 2016
    Publication date: December 27, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Eun Jung Lim, Sung Joon Min, Jung Sun You, Jung Woon Kim, Jin Hong Kim, Dong Hyun Oh
  • LIQUID CRYSTAL DEVICE
    Publication number: 20180373084
    Abstract: The present application relates to a liquid crystal device. The liquid crystal device of the present application may realize a transparent white state, a transparent black state and a scattering state according to a level of an applied voltage at a fixed frequency. The liquid crystal device may be applied to, for example, a window of a vehicle, a smart window, a window protective film, a display, a light cutoff panel for a display, an active retarder for a 3D image display or a viewing angle controlling film.
    Type: Application
    Filed: March 31, 2016
    Publication date: December 27, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Eun Jung Lim, Sung Joon Min, Jung Sun You, Jung Woon Kim, Jin Hong Kim, Dong Hyun Oh
  • FILM MASK, METHOD FOR MANUFACTURING SAME, AND METHOD FOR FORMING PATTERN USING FILM MASK AND PATTERN FORMED THEREBY
    Publication number: 20180348627
    Abstract: The present application relates to a film mask comprising: a transparent substrate; a darkened light-shielding pattern layer provided on the transparent substrate; and an embossed pattern part provided on a surface of the transparent substrate, which is provided with the darkened light-shielding pattern layer, a method for manufacturing the same, a method for forming a pattern by using the same, and a pattern formed by using the same.
    Type: Application
    Filed: January 31, 2017
    Publication date: December 6, 2018
    Inventors: Ji Young HWANG, Han Min SEO, Nam Seok BAE, Seung Heon LEE, Dong Hyun OH, Jungsun YOU
  • FILM MASK, METHOD FOR MANUFACTURING SAME, AND METHOD FOR FORMING PATTERN USING FILM MASK AND PATTERN FORMED THEREBY
    Publication number: 20180341176
    Abstract: The present application relates to a film mask comprising: a transparent substrate; a darkened light-shielding pattern layer provided on the transparent substrate; and groove portions provided in a region where the darkened light-shielding pattern layer is not provided, a method for manufacturing the same, a method for forming a pattern by using the same, and a pattern manufactured by using the same.
    Type: Application
    Filed: January 31, 2017
    Publication date: November 29, 2018
    Inventors: Ji Young HWANG, Han Min SEO, Sangcholl HAN, Seung Heon LEE, Dong Hyun OH, Dae Han SEO, Nam Seok BAE, Min Soo SONG
  • Liquid crystal display device
    Patent number: 10133135
    Abstract: The present specification relates to a liquid crystal display device.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 20, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Ilha Lee, Ji Young Hwang, Seung Heon Lee, Dong Hyun Oh, Ki-Hwan Kim, Han Min Seo, Chan Hyoung Park
  • FILM MASK, METHOD FOR MANUFACTURING SAME, AND METHOD FOR FORMING PATTERN USING FILM MASK
    Publication number: 20180329286
    Abstract: The present application relates to a film mask including: a transparent substrate; a darkened light-shielding pattern layer provided on the transparent substrate; and a release force enhancement layer provided on the darkened light-shielding pattern layer and having surface energy of 30 dynes/cm or less, a method for manufacturing the same, and a method for forming a pattern using the film mask.
    Type: Application
    Filed: January 31, 2017
    Publication date: November 15, 2018
    Inventors: Ji Young HWANG, Han Min SEO, Nam Seok BAE, Seung Heon LEE, Dong Hyun OH, Chan Hyoung PARK, Ki-Hwan KIM, Ilha LEE
  • Thin-film transistor substrate having a light reflection reduction layer and display device comprising same
    Patent number: 10103269
    Abstract: The present specification relates to a thin-film transistor substrate and a display device including the same.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: October 16, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Ilha Lee, Ji Young Hwang, Seung Heon Lee, Dong Hyun Oh, Ki-Hwan Kim, Han Min Seo, Chan Hyoung Park
  • ORGANIC LIGHT EMITTING ELEMENT
    Publication number: 20180269420
    Abstract: The present specification relates to an organic light emitting device.
    Type: Application
    Filed: October 26, 2016
    Publication date: September 20, 2018
    Inventors: Ilha LEE, Pumsuk PARK, Ji Young HWANG, Ki-Hwan KIM, Seung Heon LEE, Dong Hyun OH, Chan Hyoung PARK
  • METHOD OF MANUFACTURING AN OPTICAL DEVICE
    Publication number: 20180246361
    Abstract: The present application relates to a method of manufacturing an optical device, an optical device and a use of the optical device. The method of manufacturing an optical device of the present application can form a patterned mold layer to maintain an appropriate gap between the upper and lower substrates, and can apply an imprinting process in patterning the mold layer to simply manufacture the mold pattern having the desired shape. In addition, the optical device manufactured by the above manufacturing method can have a low driving voltage and no short circuit phenomenon, and be realized as a flexible device. Such an optical device can be applied to various display devices such as LCDs.
    Type: Application
    Filed: September 8, 2016
    Publication date: August 30, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jung Sun You, Sung Joon Min, Dong Hyun Oh, Jin Hong Kim, Jung Woon Kim, Eun Jung Lim
  • LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20180149935
    Abstract: The present specification relates to a liquid crystal display device.
    Type: Application
    Filed: May 9, 2016
    Publication date: May 31, 2018
    Inventors: Ilha LEE, Ji Young HWANG, Seung Heon LEE, Dong Hyun OH, Ki-Hwan KIM, Han Min SEO, Chan Hyoung PARK
  • Terminal for data processing device
    Patent number: D857696
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 27, 2019
    Assignees: CRUCIALTEC CO., LTD, CRUCIALTRAK, INC.
    Inventors: Dong Hyun Oh, Yong Hee Han