Patents by Inventor Yeon-keun Lee

Yeon-keun Lee 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).

  • Patent number: 11262636
    Abstract: A transmittance-variable film having a double-cell structure or a single-cell structure capable of suppressing formation of bubbles inside a liquid crystal layer or at the interface between a base film and a pressure-sensitive adhesive layer under high-temperature and high-humidity reliability conditions is provided. An exemplary transmittance-variable film can be applied to various applications, including various construction or automotive materials that require control of transmittance, or eyewear, such as augmented reality experience or sports goggles, sunglasses or helmets.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: March 1, 2022
    Inventors: Jung Doo Kim, Hyun Jun Lee, Yeon Keun Lee, Joo Hyun Lee, Dong Hyun Oh
  • Patent number: 11175558
    Abstract: A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 16, 2021
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210336230
    Abstract: Provided is a circularly polarizing plate capable of improving the tone of reflective color sense by using a retardation film having flat dispersion characteristics; and an OLED device comprising the circularly polarizing plate.
    Type: Application
    Filed: November 4, 2019
    Publication date: October 28, 2021
    Inventors: Yeon Keun LEE, Hyun Hee SON, Mun Kyu JOO, Deok Hwan KIM, Dong Choon KIM
  • Publication number: 20210325590
    Abstract: Provided is a circularly polarizing plate capable of improving a reflection color by using a retardation film with flat dispersion characteristics, and an OLED device comprising the circularly polarizing plate.
    Type: Application
    Filed: November 4, 2019
    Publication date: October 21, 2021
    Inventors: Yeon Keun LEE, Hyun Hee SON, Mun Kyu JOO, Deok Hwan KIM, Dong Choon KIM
  • Patent number: 11131897
    Abstract: A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 28, 2021
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210221279
    Abstract: A vehicle lamp and a method for manufacturing a vehicle lamp. The vehicle lamp includes a lower substrate, a fluorescent film and a color filter stacked in this order. The fluorescent film and the color filter include polydimethylsiloxane (PDMS).
    Type: Application
    Filed: October 31, 2019
    Publication date: July 22, 2021
    Inventors: Junhaeng LEE, Deok Hwan KIM, Yeon Keun LEE
  • Publication number: 20210115225
    Abstract: A blue light cut film including a diazaporphyrin-based compound of Chemical Formula 1, having absorption in a 380 nm to 450 nm range, and having a main absorption peak in a 560 nm to 600 nm range, wherein the main absorption peak has a full width at half the peak maximum of 30 nm or less.
    Type: Application
    Filed: October 31, 2019
    Publication date: April 22, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Mun Kyu JOO, Yeon Keun LEE, Junhaeng LEE, Deok Hwan KIM
  • Publication number: 20210116736
    Abstract: A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 22, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210080768
    Abstract: A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Application
    Filed: December 20, 2018
    Publication date: March 18, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20200409253
    Abstract: The present application relates to a method for producing a substrate which includes a step of exposing and developing a photosensitive resin composition layer formed on a surface of a substrate base layer to produce spacers. The method for producing a substrate of the present application can uniformly form spacers having a height according to a desired cell gap and can also freely control the height of the spacers.
    Type: Application
    Filed: November 23, 2018
    Publication date: December 31, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jun Haeng Lee, Yeon Keun Lee, Jung Doo Kim, Han Min Seo, Cheol Ock Song, Nam Seok Bae
  • Publication number: 20200319504
    Abstract: A transmittance-variable film having a double-cell structure or a single-cell structure capable of suppressing formation of bubbles inside a liquid crystal layer or at the interface between a base film and a pressure-sensitive adhesive layer under high-temperature and high-humidity reliability conditions is provided. An exemplary transmittance-variable film can be applied to various applications, including various construction or automotive materials that require control of transmittance, or eyewear, such as augmented reality experience or sports goggles, sunglasses or helmets.
    Type: Application
    Filed: December 19, 2018
    Publication date: October 8, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jung Doo Kim, Hyun Jun Lee, Yeon Keun Lee, Joo Hyun Lee, Dong Hyun Oh
  • Patent number: 10615373
    Abstract: The present application provides a substrate, an organic electronic device and a use thereof. The substrate of the present application has a structure comprising an electrode layer directly formed on the corrugated surface of the optical functional layer, and upon having formed an organic electronic device, can secure excellent functionality, for example, light extraction efficiency, and the like, together with stable drive of the element for a long time.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: April 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Yong Nam Kim, Eun Byurl Cho, Yeon Keun Lee, Mun Kyu Joo, Jong Seok Kim
  • Patent number: 10205111
    Abstract: One embodiment of the present invention relates to an organic light emitting diode, a method for manufacturing an organic light emitting diode, and a method for repairing an organic light emitting diode, the light emitting diode comprising at least one exposed part on an upper electrode which exposes an organic layer or a lower electrode, wherein the light emitting diode effectively prevents performance deterioration or operation failure of the light emitting diode due to leakage current by removing an electrical passage in an area prone to short circuit flaws.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: February 12, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Junhyuk Jang, Yeon Keun Lee
  • Publication number: 20190036083
    Abstract: The present application provides a substrate, an organic electronic device and a use thereof. The substrate of the present application has a structure comprising an electrode layer directly formed on the corrugated surface of the optical functional layer, and upon having formed an organic electronic device, can secure excellent functionality, for example, light extraction efficiency, and the like, together with stable drive of the element for a long time.
    Type: Application
    Filed: May 23, 2017
    Publication date: January 31, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Yong Nam KIM, Eun Byurl CHO, Yeon Keun LEE, Mun Kyu JOO, Jong Seok KIM
  • Patent number: 10158096
    Abstract: Disclosed is an organic light emitting device.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: December 18, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yeon Keun Lee, Seongsu Jang, Jin Ha Hwang, Young Eun Kim
  • Patent number: 10153454
    Abstract: The present invention relates to an organic light-emitting element and a production method thereof. Specifically, the present invention relates to an organic light-emitting element, which has excellent productivity during mass production thereof and may allow simplification of vapor deposition equipment, and the like, and a production method thereof.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: December 11, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yeon Keun Lee, Minsoo Kang, Jong Seok Kim
  • Patent number: 10134993
    Abstract: Provided is a substrate for an organic light emitting diode including a base substrate, a high refractive scattering layer formed on the base substrate, and having a scattering particle scattering light in a high refractive material, and an adhesive layer formed between the base substrate and the high refractive scattering layer to laminate the base substrate with the high refractive scattering layer, wherein the high refractive scattering layer has a structure in which the scattering particle is immersed in the high refractive material, an average thickness of the high refractive scattering layer is smaller than an average diameter of the scattering particle, a surface of the high refractive scattering layer laminated with the base substrate by the adhesive layer has unevenness formed by the scattering particle, the opposite surface of the high refractive scattering layer laminated with the base substrate by the adhesive layer has a planarized surface, and a method for manufacturing the same.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: November 20, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yeon Keun Lee, Jae Min Moon, Joon Koo Kang, Mun Kyu Joo, Kyoung Sik Moon, Seong Su Jang
  • Patent number: 10109818
    Abstract: The present application relates to a plastic substrate, a method for producing same, an organic electronic device, and display light source and lighting apparatus. The plastic substrate according to the present application has superb light extraction efficiency and exhibits an excellent surface roughness characteristic. Furthermore, the method for producing the plastic substrate according to the present application can produce the plastic substrate by means of a process in which scattering components are added secondarily. Moreover, the plastic substrate according to the present application can be utilized as a substrate for an organic electronic device, and the organic electronic device can be utilized as display light source and lighting apparatus.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 23, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sang Jun Park, Yeon Keun Lee, Yong Nam Kim, Hye Won Jeong, Bo Ra Shin
  • Patent number: 9966556
    Abstract: The present specification relates to an organic light emitting device.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 8, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Yeon Keun Lee
  • Patent number: 9954195
    Abstract: Disclosed is an organic light emitting device (OLED) that may include a first electrode on a substrate, the first electrode having a pattern of a plurality of cells, with each cell defined with an emitting area and a non-emitting area; a second electrode facing the first electrode; an organic layer between the first electrode and the second electrode; a short-circuit preventing layer contacting at least a portion of the first electrode; and an auxiliary electrode on the short-circuit preventing layer in the non-emitting area of each cell, wherein an aperture ratio of the short-circuit preventing layer and the auxiliary electrode in each cell is 30% or more.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: April 24, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Yeon Keun Lee