Patents by Inventor Kwang-wook Choi

Kwang-wook Choi 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: 20240068922
    Abstract: A sensor device includes: a support structure having a cantilever shape extending in a first direction and having a first end fixed; a sensing element having a surface and a resonant frequency changing according to contaminants adsorbed to the surface and disposed at a second end of the support structure; a frequency detector configured to detect the resonant frequency of the sensing element; and an actuator disposed at the one end of the support structure and configured to move the support structure so that the second end of the support structure moves in a second direction perpendicular to the first direction.
    Type: Application
    Filed: February 21, 2023
    Publication date: February 29, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwang Wook CHOI, IIhwan KIM, Seokwhan CHUNG
  • Publication number: 20230284370
    Abstract: A protection unit includes: a protection member including a metal; and a protection film attached to the protection member. A length of the protection member in a first direction is greater than a length of the protection film in the first direction, and the protection film has grooves at respective edges.
    Type: Application
    Filed: January 25, 2023
    Publication date: September 7, 2023
    Inventors: Kwang-Wook CHOI, KIJONG KIM, Min Ki KIM, Min-Suk CHUNG
  • Publication number: 20230063543
    Abstract: There is provided a method for collecting and reusing an active material from positive electrode scrap. The method of reusing a positive electrode active material of the present disclosure includes (a) thermally treating a positive electrode scrap comprising an active material layer on a current collector in air for thermal decomposition of a binder and a conductive material in the active material layer, to separate the current collector from the active material layer, and collecting an active material in the active material layer, (b-1) washing the active material collected from the step (a) with a lithium compound solution which is basic in an aqueous solution, and drying, (b-2) grinding the active material dried from the step (b-1), (b-3) adding a lithium compound to the active material ground from the step (b-2), and (c) annealing the active material having the lithium precursor added thereto, to obtain a reusable active material.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 2, 2023
    Inventors: Min-Seo KIM, Se-Ho PARK, Doo-Kyung YANG, Kwang-Wook CHOI
  • Patent number: 11035999
    Abstract: A backlight unit includes a light guide plate; a wavelength conversion member disposed on a surface of the light guide plate; and a housing which houses the wavelength conversion member and is fused to the light guide plate.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo Suk Seo, Kwang Wook Choi, Yong Hoon Kwon, Sung Chul Kim, Seok Hyun Nam, Si Joon Song
  • Publication number: 20210017020
    Abstract: Provided is a suspended type nanowire that is fixed and electrically connected to each of a first electrode disposed on a substrate and a second electrode disposed on the substrate and spaced apart from the first electrode and suspended on the substrate. Here, a cross-section in a direction perpendicular to a longitudinal direction of the suspended type nanowire includes at least one curved part, and the curve part includes a reference surface and at least one side surface extending downward from the reference surface.
    Type: Application
    Filed: July 15, 2020
    Publication date: January 21, 2021
    Applicant: Korea Advanced Institute of Science And Technology
    Inventors: Jun-Bo YOON, Jaeshin LEE, Kwang-Wook CHOI, Min-Seung JO
  • Patent number: 10845647
    Abstract: A display device includes a backlight unit and a display panel disposed above the backlight unit, where the backlight unit includes a light guide plate, a housing which is disposed at one side of the light guide plate and accommodates a wavelength converting member, and a flexible glass film which covers one side of the housing, and a first laser welding part is disposed between the flexible glass film and the housing.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo Suk Seo, Sung Chul Kim, Won Jin Kim, Jung Hyun Kim, Seok Hyun Nam, Si Joon Song, Kwang Wook Choi
  • Publication number: 20200249392
    Abstract: A backlight unit includes a light guide plate; a wavelength conversion member disposed on a surface of the light guide plate; and a housing which houses the wavelength conversion member and is fused to the light guide plate.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: Woo Suk SEO, Kwang Wook CHOI, Yong Hoon KWON, Sung Chul KIM, Seok Hyun NAM, Si Joon SONG
  • Patent number: 10663647
    Abstract: A backlight unit includes a light guide plate; a wavelength conversion member disposed on a surface of the light guide plate; and a housing which houses the wavelength conversion member and is fused to the light guide plate.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: May 26, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo Suk Seo, Kwang Wook Choi, Yong Hoon Kwon, Sung Chul Kim, Seok Hyun Nam, Si Joon Song
  • Patent number: 10658691
    Abstract: Disclosed are a method of manufacturing an inorganic electrolyte membrane and a composition for manufacturing an inorganic electrolyte membrane, the method including: (a) mixing primary inorganic particles (<50 nm), a dispersant, and a solvent and dispersing the primary inorganic particles, thus preparing a dispersion of secondary inorganic particles having a hydrodynamic diameter of 120 to 230 nm, determined using DLS (Dynamic Light Scattering), (b) adding and mixing the dispersion of secondary inorganic particles with a binder, (c) applying a mixed solution composed of the dispersion of inorganic particles and the binder and drying the mixed solution, thus forming a green sheet, and (d) firing the green sheet, thus forming an electrolyte membrane.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: May 19, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Ki-Youl Yoon, Dong-Oh Shin, Kwang-Wook Choi, Hyeon Choi
  • Patent number: 10578790
    Abstract: A light source unit includes: a light source circuit board; light sources disposed on the light source circuit board and which emit light; a wavelength converter disposed on the light sources to be spaced apart from the light sources and to partially overlap with the light sources; a first glass disposed between the light sources and the wavelength converter; and a second glass disposed on the wavelength converter and at least partially in direct contact with, and coupled to, the first glass.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Hye Son, Yong Hoon Kwon, Won Jin Kim, Woo Suk Seo, Si Joon Song, Kwang Wook Choi
  • Patent number: 10386024
    Abstract: A wavelength conversion member includes: a first wavelength converter containing a first wavelength converting material; a second wavelength converter containing a second wavelength converting material different from the first wavelength converting material; a first container member providing a space for accommodating the first wavelength converter; and a second container member facing the first container member and providing a space for accommodating the second wavelength converter. The first container member and the second container member may be at least partially fusion-bonded with each other.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 20, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si Joon Song, Yong Hoon Kwon, Won Jin Kim, Woo Suk Seo, Young Hye Son, Kwang Wook Choi
  • Patent number: 10222537
    Abstract: A display device includes a display panel including a display area and a non-display area adjacent to the display area, a bottom member including a bottom part facing the display area, a side part extending from the bottom part toward the display panel, and a support part extending from the side part to face a portion of the display area and the non-display area, a plurality of light sources on the bottom part to emit light, and a light guide member between the support part of the bottom member and the display panel to guide the light incident from the plurality of light sources toward the display panel.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-min Park, Kwang-wook Choi, Eunju Nam, Min-young Song
  • Publication number: 20190056623
    Abstract: A display device includes a backlight unit and a display panel disposed above the backlight unit, where the backlight unit includes a light guide plate, a housing which is disposed at one side of the light guide plate and accommodates a wavelength converting member, and a flexible glass film which covers one side of the housing, and a first laser welding part is disposed between the flexible glass film and the housing.
    Type: Application
    Filed: July 23, 2018
    Publication date: February 21, 2019
    Inventors: Woo Suk SEO, Sung Chul KIM, Won Jin KIM, Jung Hyun KIM, Seok Hyun NAM, Si Joon SONG, Kwang Wook CHOI
  • Patent number: 10133100
    Abstract: A curved display device includes a display panel which is curved with respect to a central axis of the curved display device to define a display surface which is curved with respect to the central axis of the curved display device; a first adhesion member attached to an edge area of a bottom surface of the display panel; a mold frame which is curved with respect to the central axis of the curved display device, the mold frame defining a stepped portion on which the display panel is seated; and a second adhesion member attached to a top surface of the stepped portion and to the first adhesion member which is attached to the edge area of the bottom surface of the display panel.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sijoon Song, Yong-hoon Kwon, Sojeong La, Seokhyun Nam, Kwang-wook Choi
  • Publication number: 20180210125
    Abstract: A wavelength conversion member includes: a first wavelength converter containing a first wavelength converting material; a second wavelength converter containing a second wavelength converting material different from the first wavelength converting material; a first container member providing a space for accommodating the first wavelength converter; and a second container member facing the first container member and providing a space for accommodating the second wavelength converter. The first container member and the second container member may be at least partially fusion-bonded with each other.
    Type: Application
    Filed: January 12, 2018
    Publication date: July 26, 2018
    Inventors: Si Joon SONG, Yong Hoon KWON, Won Jin KIM, Woo Suk SEO, Young Hye SON, Kwang Wook CHOI
  • Publication number: 20180196183
    Abstract: A light source unit includes: a light source circuit board; light sources disposed on the light source circuit board and which emit light; a wavelength converter disposed on the light sources to be spaced apart from the light sources and to partially overlap with the light sources; a first glass disposed between the light sources and the wavelength converter; and a second glass disposed on the wavelength converter and at least partially in direct contact with, and coupled to, the first glass.
    Type: Application
    Filed: January 6, 2018
    Publication date: July 12, 2018
    Inventors: Young Hye SON, Yong Hoon KWON, Won Jin KIM, Woo Suk SEO, Si Joon SONG, Kwang Wook CHOI
  • Publication number: 20180149807
    Abstract: A backlight unit includes a light guide plate; a wavelength conversion member disposed on a surface of the light guide plate; and a housing which houses the wavelength conversion member and is fused to the light guide plate.
    Type: Application
    Filed: November 10, 2017
    Publication date: May 31, 2018
    Inventors: Woo Suk SEO, Kwang Wook CHOI, Yong Hoon KWON, Sung Chul KIM, Seok Hyun NAM, Si Joon SONG
  • Publication number: 20180126501
    Abstract: A backlight assembly includes a light source member, an optical film assembly, a rear receiving container and a mold frame. The rear receiving container includes a bottom plate and a plurality of sidewalls. Each of the sidewalls includes a first combining protrusion and a first combining recess. The first combining protrusion and the first combining recess extend in a direction substantially parallel with the protruded direction of the sidewall. The mold frame is disposed in the rear receiving container to press a peripheral portion of the optical film assembly. The mold frame includes a second combining recess and a second combining protrusion. The second combining recess and the second combining protrusion extend in the direction substantially parallel with the protruded direction. The second combining recess is fitted with the first combining protrusion. The second combining protrusion is fitted with the first combining recess.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Kwang-Wook CHOI, Sang-Heon Ye, Jae-Sang Lee, Sang-Ho Hwang
  • Patent number: 9817182
    Abstract: A display device includes a display panel, a light source which generates light, a light guide plate which receives the light and guides the light to the display panel, the light guide plate defining a side surface thereof, an accommodating member accommodating the light source and the light guide plate therein, the accommodating member including a sidewall, and a fixing member in plural between the sidewall of the accommodating member and the side surface of the light guide plate. The fixing member defines a supporting portion thereof contacting the side surface of the light guide plate, fixing portions fixed to the sidewall of the accommodating member and spaced apart from each other, and a connecting portion provided in plural and connecting an end among opposing ends of the supporting portion to a fixing portion among the fixing portions, the fixing portion forming an acute angle with the connecting portion.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kwang-wook Choi, Junwoo You
  • Publication number: 20170322361
    Abstract: A display device includes a display panel including a display area and a non-display area adjacent to the display area, a bottom member including a bottom part facing the display area, a side part extending from the bottom part toward the display panel, and a support part extending from the side part to face a portion of the display area and the non-display area, a plurality of light sources on the bottom part to the display light, and a light guide member between the support part of the bottom member and the display panel to guide the light incident from the plurality of light sources toward the display panel.
    Type: Application
    Filed: December 6, 2016
    Publication date: November 9, 2017
    Inventors: Young-min PARK, Kwang-wook CHOI, Eunju NAM, Min-young SONG