Patents by Inventor Jung Woon KIM

Jung Woon KIM 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: 20240036400
    Abstract: A light modulating device is disclosed herein. The light modulating device is applied to a sunroof and/or glass of an automobile. In some embodiments, a light modulating device configured to be disposed in a sunroof of an automobile includes a light modulation film layer, wherein the light modulation film layer includes a first anisotropic substrate, a second anisotropic substrate, and a liquid crystal layer, wherein each of the first and second anisotropic substrates has a first surface, wherein the first surfaces of the first and second anisotropic substrates face each other, wherein the liquid crystal layer is disposed between the first surfaces of the first and second anisotropic substrates, and wherein a slow axis of the first or second anisotropic substrate is disposed parallel to a width direction of the automobile.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 1, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Jung Woon Kim
  • Publication number: 20230408872
    Abstract: An optical device is disclosed herein. In some embodiments, a optical device includes a liquid crystal element having a top surface, a bottom surface, and sides separating the top surface and the bottom surface, and an outer layer surrounding the sides of the liquid crystal element, wherein the liquid crystal element comprises a first base layer, a second base layer, a liquid crystal layer positioned between the first base layer and the second base layer, a pressure-sensitive adhesive layer positioned between the first base layer and the liquid crystal layer, and a spacer to maintain a gap between the first base layer and the second base layer, wherein the optical device satisfies Equation 1: ?T2×0.4?T1?T2?T2×0.4??[Equation 1] wherein, T1 is a thickness of the outer layer, and T2 is a thickness of the liquid crystal element.
    Type: Application
    Filed: October 28, 2021
    Publication date: December 21, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woon Kim, Jung Sun You, Doo Young Huh, Dong Hyun Oh
  • Publication number: 20230384638
    Abstract: An optical device is disclosed herein. In some embodiments, an optical device includes a first outer substrate, a second outer substrate, a liquid crystal element positioned between the first outer substrate and the second outer substrate, a first intermediate layer between the first outer substrate and the liquid crystal element, and a second intermediate layer between the second outer substrate and the liquid crystal element, wherein a sum of total thicknesses of the first and second intermediate layers is 800 ?m or more, and wherein the liquid crystal element includes a first base layer, a second base layer, a liquid crystal layer between the first base layer and the second base layer, a pressure-sensitive adhesive layer between the first base layer and the liquid crystal layer, and a spacer to maintain a gap between the first and second base layers.
    Type: Application
    Filed: October 28, 2021
    Publication date: November 30, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woon Kim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Eun Jung Lim, Min Jun Gim
  • Publication number: 20230305338
    Abstract: A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a first substrate, a second substrate, a light modulation layer, and a retardation film, wherein each of the first and second substrates has a first surface and a second surface, wherein the first and second surfaces are disposed opposite to each other, wherein the first surfaces of the first and second substrates face each other, wherein the light modulation layer is disposed between the first and second substrates, wherein the retardation film is formed on the second surface of the first substrate or the second substrate, and wherein the retardation film has an in-plane phase difference in a range of 100 nm to 300 nm for light having a wavelength of 550 nm. The light modulating device can be control omnidirectional light leakage in a black mode while having excellent optical properties and mechanical properties.
    Type: Application
    Filed: July 22, 2021
    Publication date: September 28, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Sergey Belyaev, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Jung Woon Kim, Han Min Seo
  • Publication number: 20230280616
    Abstract: A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a light modulation film layer, wherein the light modulation film layer includes a first substrate, a second substrate, and a liquid crystal layer, wherein the liquid crystal layer is disposed between the first and second substrates, wherein the liquid crystal layer and is capable of implementing twisted orientation, and wherein a K value is in a range of 0.15 to 0.4. The light modulation device can stably maintain designed optical properties even after an encapsulation process in which a pressure is applied, such as an autoclave process. The light modulating device can also stably maintain the orientation state of the light modulation layer while effectively securing adhesive force between upper and lower substrates.
    Type: Application
    Filed: July 27, 2021
    Publication date: September 7, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Jung Woon Kim, Han Min Seo
  • Publication number: 20230279279
    Abstract: A pressure-sensitive adhesive and a liquid crystal cell including the same are disclosed herein. In some embodiments, a pressure-sensitive adhesive having a storage elastic modulus of 700 kPa or more at a temperature of 25° C. and a frequency of 6 rad/sec, and a gel fraction of 35% or more, wherein the gel fraction is defined by Equation 1: B/A×100??[Equation 1] wherein, A is an initial mass (g) of the pressure-sensitive adhesive, B is a mass (g) of an insoluble content after the pressure-sensitive adhesive is immersed in a solvent at 60° C. for 24 hours and then dried at 150° C. for 30 minutes. The press-sensitive adhesive is advantageous for implementation into a flexible element between upper and lower substrates of a liquid crystal cell, and providing excellent electro-optical properties and appearance uniformity by minimizing defects.
    Type: Application
    Filed: July 2, 2021
    Publication date: September 7, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Sun You, Dong Hyun Oh, Jin Hong Kim, Jung Woon Kim, Min Jun Gim
  • Patent number: 11733567
    Abstract: A light modulation device is disclosed herein. The light modulation device can properly maintain a cell gap by controlling the shape and arrangement of spacers and the like, and is applicable for various applications by effectively controlling omnidirectional light leakage in a black mode, while having excellent optical properties, including transmittance-variable characteristics and haze characteristics, and the like.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: August 22, 2023
    Inventors: Min Jun Gim, Jung Sun You, Cheol Ock Song, Dong Hyun Oh, Nam Gyu Kim, Jin Hong Kim, Jung Woon Kim
  • Publication number: 20230258992
    Abstract: A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a first substrate, a second substrate, and a liquid crystal layer, wherein the liquid crystal layer is disposed between the first and second substrates, and wherein the light modulating device satisfies Equation 1: T2?3×T1, wherein, T1 is an initial transmittance measured after vertically orienting the liquid crystal layer and placing it between orthogonal polarizers, and T2 is a transmittance measured after heating the liquid crystal layer showing the transmittance of T1 at 100° C. for 5 minutes, and then placing it between the orthogonal polarizers. The light modulating device can stably maintain designed optical properties even after an encapsulation process. The light modulating device can also stably maintain the orientation state of a light modulation layer while effectively securing adhesive force between upper and lower substrates.
    Type: Application
    Filed: July 29, 2021
    Publication date: August 17, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Jung Woon Kim
  • Publication number: 20230258982
    Abstract: A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a first substrate having a first surface, a pressure-sensitive adhesive layer or an adhesive layer formed on the first surface of the first substrate, a second substrate, a liquid crystal layer disposed between the first and second substrates; and a partition wall spacer, wherein the partition wall spacer maintains a distance between the first and second substrates, wherein the liquid crystal layer is capable of being configured in a twist orientation, and wherein a ratio of thickness of the liquid crystal layer relative to a pitch of the liquid crystal layer in the twist orientation is more than 2.8 and 10 or less. The light modulating device can have a wide transmittance variable range and does not have problems, such as liquid crystal defects or visibility deterioration, while implementing low transmittance in a black mode.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 17, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jin Hong Kim, Dong Hyun Oh, Jung Sun You, Jung Woon Kim, Min Jun Gim
  • Publication number: 20230229050
    Abstract: An optical device is disclosed herein. In some embodiments, an optical device includes a first outer substrate, a second outer substrate, a liquid crystal element film positioned between the first and second outer substrates, intermediate layers positioned between the first outer substrate and the liquid crystal element film and between the liquid crystal element film and the second outer substrate, respectively, wherein a sum of the total thicknesses of the intermediate layers is 1,600 ?m or more. The optical device can secure structural stability and good quality uniformity by maintaining the cell gap of the liquid crystal element film properly, having excellent attachment force between the upper substrate and the lower substrate, and minimizing defects such as pressing or crowding in the bonding process of the outer substrates.
    Type: Application
    Filed: July 2, 2021
    Publication date: July 20, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woon Kim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Min Jun Gim
  • Patent number: 11614660
    Abstract: A transmittance-variable film and a use thereof, where the transmittance-variable film can control pretilt of a liquid crystal interface by applying a liquid crystal alignment film containing splay oriented liquid crystal molecules, and can vertically and horizontally orient a liquid crystal layer or a liquid crystal interface according to an average tilt angle of the liquid crystal alignment film to ensure uniformity of driving and fast response speed. In addition, by applying a liquid crystal alignment film, the transmittance-variable film can be implemented in various modes with a simple coating-drying-curing method excluding the rubbing process by controlling an arrangement of liquid crystal molecules in a liquid crystal alignment film other than the pretilt control method using the conventional rubbing method.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: March 28, 2023
    Inventors: Jung Woon Kim, Su Young Ryu, Moon Soo Park, Byoung Kun Jeon, Sin Young Kim, Ji Youn Lee
  • Publication number: 20220390779
    Abstract: A method for manufacturing a light modulation device is provided. The light modulation device is capable of removing defects such as orientation irregularities. The light modulation device further improves the orientation state in the light modulation device that adjusts orientation of a liquid crystal compound or the like with a liquid crystal alignment film and a pressure-sensitive adhesive layer or adhesive layer.
    Type: Application
    Filed: November 4, 2020
    Publication date: December 8, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jung Sun You, Dong Hyun Oh, Cheol Min Yun, Jin Hong Kim, Jung Woon Kim, Min Jun Gim
  • Patent number: 11506940
    Abstract: A transmittance-variable layer and a transmittance-variable device including the same are disclosed herein. In some embodiments, a transmittance-variable device includes a polarization layer and a transmittance-variable layer disposed on the polarization layer, wherein the transmittance-variable layer includes a first base layer disposed on the polarization layer and a spacer fixed on a surface of the first base layer opposite to the polarization layer, and a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a gap between the first and second base layers, and a first light modulating material disposed in the gap.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 22, 2022
    Inventors: Jung Woon Kim, Su Young Ryu, Byoung Kun Jeon, Yong Sung Choi, Seong Min Lee, Hye Min Yu
  • Publication number: 20220350185
    Abstract: A light modulation device is disclosed herein. The light modulation device can properly maintain a cell gap by controlling the shape and arrangement of spacers and the like, and is applicable for various applications by effectively controlling omnidirectional light leakage in a black mode, while having excellent optical properties, including transmittance-variable characteristics and haze characteristics, and the like.
    Type: Application
    Filed: October 8, 2020
    Publication date: November 3, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Jung Sun You, Cheol Ock Song, Dong Hyun Oh, Nam Gyu Kim, Jin Hong Kim, Jung Woon Kim
  • Publication number: 20220299690
    Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate having a first surface and a second surface, an adhesive layer or pressure-sensitive adhesive layer disposed on the first surface of the first polymer film substrate, a second polymer film substrate having a first surface and a second surface, a liquid crystal alignment film disposed on the first surface of the second polymer film substrate, a ?C plate; and a light modulation layer containing a liquid crystal compound. The light modulation device has excellent optical properties including transmittance-variable characteristics through characteristic control and proper arrangement of a compensation film, and being applicable to various uses by controlling inclination angle light leakage in a black mode.
    Type: Application
    Filed: October 22, 2020
    Publication date: September 22, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Sergey Belyaev, Jung Sun You, Cheol Ock Song, Dong Hyun Oh, Cheol Min Yun, Jin Hong Kim, Jung Woon Kim
  • Patent number: 11448934
    Abstract: An optical device is provided in the present application. The present application provides an optical device capable of varying transmittance, and such optical device can be used for various applications, such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: September 20, 2022
    Inventors: Nam Hun Kim, Seong Min Lee, Byoung Kun Jeon, Su Young Ryu, Jung Woon Kim, Young Shin Lee
  • Patent number: 11435615
    Abstract: An optical device that can be used for various applications including eyewears, such as sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle, and the like is provided. The optical device includes first and second outer substrates disposed to face each other, an active liquid crystal film layer, and a step forming layer. The active liquid crystal film layer and the step forming layer are encapsulated by an encapsulating agent between the first and second outer substrate. The active liquid crystal film layer comprises a first region that is pressed by the step forming layer and a second region that is not pressed by the step forming layer. The defects caused by an excessively large or small amount of light-modulating material or heat shrinkage of the light-modulating material, and the like are prevented in the optical device.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: September 6, 2022
    Inventors: Seong Min Lee, Byoung Kun Jeon, Nam Hun Kim, Jung Woon Kim, Young Shin Lee
  • Patent number: 11429005
    Abstract: An optical device is provided in the present application. The optical device of the present application has varying transmittance and improved appearance defects, such as reduction of wrinkles that may occur by lamination of a liquid crystal element and an outer substrate. Such optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: August 30, 2022
    Inventors: Nam Hun Kim, Byoung Kun Jeon, Doo Young Huh, Su Young Ryu, Seong Min Lee, Jung Woon Kim, Young Shin Lee
  • Patent number: 11428968
    Abstract: An optical device and a use thereof are provided. The optical device is capable of suppressing external bubble inflow by eliminating negative pressures that can occur due to shape deformation of a base material in an environment changing between a high temperature and a low temperature and generating a positive pressure. Such optical device can be used as various transmittance-variable devices.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: August 30, 2022
    Inventors: Nam Hun Kim, Jung Woon Kim, In Ju Mun, Su Young Ryu, Byoung Kun Jeon
  • Patent number: 11372290
    Abstract: An optical device includes a first outer substrate; a second outer substrate disposed opposite to the first outer substrate; and an active liquid crystal film or a polarizer, wherein the active liquid crystal film or the polarizer is encapsulated by an encapsulating agent between the first and second outer substrates and wherein a shrinkable film adjacent to any one of the first and second outer substrates is further included. The optical device is capable of varying transmittance. The optical device can be used for various applications such as an eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewears, an outer wall of a building or a sunroof for a vehicle.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: June 28, 2022
    Inventors: Jung Woon Kim, Byoung Kun Jeon, Beom Jin Lee, In Ju Mun, Su Young Ryu, Seong Min Lee, Young Shin Lee, Nam Hun Kim