Patents by Inventor Jun-won Chang

Jun-won Chang 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: 12065073
    Abstract: A light-emitting diode (LED) lamp for a vehicle and a method of manufacturing the same use MID and magnetic induction technologies. The LED lamp includes a LED module, a housing accommodating the LED module, and a molded interconnect device (MID) electrode formed on a surface of the housing. The LED module may be mounted on the MID electrode by soldering using magnetic induction heating, the housing may be an injection molded product, and the MID electrode may be formed on the housing using a MID process.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: August 20, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, BS TECHNICS CO., LTD., NIFCO KOREA INC., HYUNDAI MOBIS CO., LTD., ALPS ELECTRIC KOREA CO., LTD.
    Inventors: Jun Sik Kim, Jung Sik Choi, Young Do Kim, Tae Kyoung Jung, Seung-Sik Han, Hong-Sik Chang, Kwang-Pyo Cho, Young-Ju Lee, Jong-Hyun Park, Jin-Won Lee, Jun-Geun Oh, Cheon-Ho Kim, Young-Jai Im, Sun-Mi Oh, Kang-Sun Lee, Sae-Ah Kim, Jong-Eun Park, Kwan-Woo Lee, Jong-Chae Lee, Jun-Hyun Park, Won-Il Lee, Dae-Woo Park
  • Publication number: 20240266251
    Abstract: A direct cooling type semiconductor package unit includes a substrate made of a material capable of manufacturing a semiconductor device, and having a material layer for forming the semiconductor device stacked on one side of the substrate, and a flow channel through which a cooling fluid flows formed on the other side of the substrate to enable direct cooling of the semiconductor device using the cooling fluid; a packaging block disposed at a position spaced apart from the substrate for packaging the semiconductor device, and having an electrode electrically connected to the semiconductor device through wiring and placed thereon to be insulated; a heat sink unit disposed on a lower side of the packaging block and having a fluid movement region formed at a position corresponding to a flow channel of the substrate; and a thin film type structure disposed between the substrate and the heat sink unit for coupling between the substrate and the heat sink unit and being moldable to have pattern structures of variou
    Type: Application
    Filed: February 4, 2024
    Publication date: August 8, 2024
    Inventors: Jun Rae PARK, Min Soo KANG, Hae Cheon KIM, Hyoung Soon LEE, Sung Jae CHANG, Hyun Wook JUNG, Il Gyu CHOI, Seong Il KIM, Sang Heung LEE, Ho Kyun AHN, Jong Won LIM
  • Publication number: 20240266253
    Abstract: Provided is a direct cooling device for an integrated circuit configured to form a direct cooling portion with a flow channel through which cooling fluid may flow in a through via hole of a substrate constituting the integrated circuit, and to couple the substrate to a heat sink unit through a bonding portion formed integrally with the direct cooling portion, unlike the prior art in which only a ground circuit is possible through the through via hole, which derives the effect of increasing product reliability due to improved thermal management efficiency of the integrated circuit by directly cooling the semiconductor device as well as the ground circuit, and the effect of simplifying and miniaturizing the structure by implementing the cooling function using a circuit for grounding the semiconductor device even without forming an additional flow path structure for cooling the semiconductor device.
    Type: Application
    Filed: February 4, 2024
    Publication date: August 8, 2024
    Inventors: Min Soo KANG, Jun Rae PARK, Hae Cheon KIM, Hyoung Soon LEE, Sung Jae CHANG, Hyun Wook JUNG, Il Gyu CHOI, Seong Il KIM, Sang Heung LEE, Ho Kyun AHN, Jong Won LIM
  • Patent number: 11892669
    Abstract: A polarizing plate and a display device including the same. The polarizing plate includes a retardation layer exhibiting ultraviolet blocking characteristics even in a state where the retardation layer does not include any ultraviolet absorber or light stabilizer. The polarizing plate can be used alone or in combination with an appropriate sunscreen or a light stabilizer as needed to selectively block ultraviolet rays in a region requiring blocking, without affecting display performance, such as color senses and image quality, of a display device. The polarizing plate can also be formed with a small thickness without requiring a separate ultraviolet blocking layer, and also has excellent durability, because the polarizing plate exhibits a certain ultraviolet blocking property even in the absence of an ultraviolet absorber or light stabilizer.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 6, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Hyuk Yoon, Jun Won Chang, Jong Hyun Jung, Sun Kug Kim, Moon Soo Park
  • Patent number: 11169417
    Abstract: The present application relates to a method for manufacturing of a multi-layer liquid crystal film and a multi-layer liquid crystal film. The present application provides the method for manufacturing of the multi-layer liquid crystal film capable of improving coatability of liquid crystals, orientation of liquid crystals and adhesive force between liquid crystal films, as well as realizing thinning of a liquid crystal film, and a multi-layer liquid crystal film manufactured by the above method.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: November 9, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Young Jin Kim, Jun Won Chang, Dae Hee Lee
  • Publication number: 20210302638
    Abstract: A polarizing plate and a display device including the same. The polarizing plate includes a retardation layer exhibiting ultraviolet blocking characteristics even in a state where the retardation layer does not include any ultraviolet absorber or light stabilizer. The polarizing plate can be used alone or in combination with an appropriate sunscreen or a light stabilizer as needed to selectively block ultraviolet rays in a region requiring blocking, without affecting display performance, such as color senses and image quality, of a display device. The polarizing plate can also be formed with a small thickness without requiring a separate ultraviolet blocking layer, and also has excellent durability, because the polarizing plate exhibits a certain ultraviolet blocking property even in the absence of an ultraviolet absorber or light stabilizer.
    Type: Application
    Filed: November 4, 2019
    Publication date: September 30, 2021
    Inventors: Hyuk Yoon, Jun Won Chang, Jong Hyun Jung, Sun Kug Kim, Moon Soo Park
  • Patent number: 11099420
    Abstract: An optical device is disclose herein. In some embodiments, an optical device includes an active liquid crystal element film, wherein the active liquid crystal element film comprises two base films, an active liquid crystal layer present between the two base films, wherein the active liquid crystal layer contains a liquid crystal compound and is capable of switching between a first oriented state and a second oriented state, and a polarizing coating layer, wherein the polarizing coating layer is present between one of the two base films and the active liquid crystal layer. The optical device is capable of varying transmittance, and can be used for various applications such as sunglasses, AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: August 24, 2021
    Inventors: Ji Hoon Park, Byoung Kun Jeon, Moon Soo Park, Jun Won Chang, Dae Hee Lee, Hye Min Yu, Young Shin Lee, Byung Sun Lee
  • Patent number: 10989850
    Abstract: The present application relates to an optical film and a use thereof. In the present application, through control of an alignment state of a liquid crystal compound in a liquid crystal layer, the liquid crystal layer may exhibit so-called reverse-wavelength dispersion while forming a single thin layer. An optical film including the liquid crystal layer may show optical modulation in a display device such as a liquid crystal display (LCD), organic light emitting device (OLED), or the like, or may be used in various applications, for example, as an optical element capable of improving light utilization efficiency, an element for implementation of a stereoscopic image and quality improvement thereof, and so forth.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 27, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Dae Hee Lee, Jun Won Chang, Young Jin Kim, Moon Soo Park, Sergey Belyaev
  • Publication number: 20200333660
    Abstract: An optical device is disclose herein. In some embodiments, an optical device includes an active liquid crystal element film, wherein the active liquid crystal element film comprises two base films, an active liquid crystal layer present between the two base films, wherein the active liquid crystal layer contains a liquid crystal compound and is capable of switching between a first oriented state and a second oriented state, and a polarizing coating layer, wherein the polarizing coating layer is present between one of the two base films and the active liquid crystal layer. The optical device is capable of varying transmittance, and can be used for various applications such as sunglasses, AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 22, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hoon Park, Byoung Kun Jeon, Moon Soo Park, Jun Won Chang, Dae Hee Lee, Hye Min Yu, Young Shin Lee, Byung Sun Lee
  • Publication number: 20190056627
    Abstract: The present application relates to a method for manufacturing of a multi-layer liquid crystal film and a multi-layer liquid crystal film. The present application provides the method for manufacturing of the multi-layer liquid crystal film capable of improving coatability of liquid crystals, orientation of liquid crystals and adhesive force between liquid crystal films, as well as realizing thinning of a liquid crystal film, and a multi-layer liquid crystal film manufactured by the above method.
    Type: Application
    Filed: August 22, 2017
    Publication date: February 21, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Young Jin KIM, Jun Won CHANG, Dae Hee LEE
  • Patent number: 10018760
    Abstract: The present application relates to an optical film, a complex polarizing plate, and a liquid crystal display. The present application is directed to providing the optical film or complex polarizing plate, and the liquid crystal display including the same which may be effectively applied to optical compensation of various liquid crystal displays, in particular, so-called in plane switching (IPS) liquid crystal displays.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: July 10, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Jun Won Chang, Moon Soo Park, Dae Hee Lee, Sergey Belyaev
  • Patent number: 9933654
    Abstract: A polarizer for use in an IPS-LCD includes: a polarizing element; and a retardation film laminate attached to a surface of the polarizing element. The retardation film laminate includes a combination of a +B film and a ?B film or a combination of a +B film and a +A film.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: April 3, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Jun Won Chang, Moon Soo Park
  • Patent number: 9891360
    Abstract: Provided are an optical film and a display device including the same. The optical film may be disposed at the outermost side of a display device, such as a liquid crystal display or an organic light emitting display, or at an outside of a polarizing layer of the display in which the polarizing layer is disposed at a visible side. The film disposed as described above may overcome degradation of brightness that may occur when an observer watches an image with polarizing sunglasses. The optical film may also have hardness suitable for its use.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: February 13, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Jun Won Chang, Su Young Ryu, Moon Su Park
  • Patent number: 9828550
    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, which may exhibit a high contrast ratio and be driven with a low driving voltage, and exhibit 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: November 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Jung Sun You, Dong Hyun Oh, Sung Joon Min, Kyung Jun Kim, Dae Hee Lee, Jun Won Chang, Moon Soo Park
  • Patent number: 9703145
    Abstract: A liquid crystal composition and a method of manufacturing an optical film. The liquid crystal composition which may form a liquid crystal layer having excellent optical characteristics and a high surface hardness. The liquid crystal layer formed as described above may be used in various applications, and for example, may be disposed on the outermost surface of a display device, such as an LCD or an OLED, or at an outer side of a polarizing layer of the display in which the polarizing layer is disposed at a visible side, thereby serving as a liquid crystal layer which may solve a problem of degrading brightness occurring when an observer watches an image with polarizing sunglasses.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: July 11, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Su Young Ryu, Moon Soo Park, Jun Won Chang, Sin Young Kim
  • Patent number: 9651819
    Abstract: A polarizer for use in an IPS-LCD includes: a polarizing element; and a retardation film laminate attached to a surface of the polarizing element. The retardation film laminate includes a combination of a +B film and a ?B film or a combination of a +B film and a +A film.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: May 16, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Jun-Won Chang, Moon-Soo Park
  • Patent number: 9588369
    Abstract: The present application relates to a liquid crystal cell, a method for preparing a liquid crystal cell and a display device. An exemplary liquid crystal cell may be applied to various types of display devices so as to control a viewing angle or light transmittance of the display device.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: March 7, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Joon Min, Dong Hyun Oh, Jun Won Chang, Kyung Jun Kim, Hye Won Jeong, Moon Soo Park
  • Publication number: 20160187554
    Abstract: The present application relates to an optical film and a use thereof. In the present application, through control of an alignment state of a liquid crystal compound in a liquid crystal layer, the liquid crystal layer may exhibit so-called reverse-wavelength dispersion while forming a single thin layer. An optical film including the liquid crystal layer may show optical modulation in a display device such as a liquid crystal display (LCD), organic light emitting device (OLED), or the like, or may be used in various applications, for example, as an optical element capable of improving light utilization efficiency, an element for implementation of a stereoscopic image and quality improvement thereof, and so forth.
    Type: Application
    Filed: September 29, 2014
    Publication date: June 30, 2016
    Inventors: Dae Hee LEE, Jun Won CHANG, Young Jin KIM, Moon Soo Park, Sergey BELYAEV
  • Patent number: 9372295
    Abstract: A liquid crystal film (LCF) is provided. The exemplified LCF can be used as a reflective polarization plate, which can improve luminance and light utilization efficiency of a display device, such as an LCD, and the like.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: June 21, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Jun Won Chang, Moon Soo Park, Dae Hee Lee
  • Patent number: 9316769
    Abstract: An optical film, a reflective polarizing plate and a display device are provided. For example, the optical film may be used in the reflective polarizing plate which may enhance the efficiency of light utilization of a display device such as a liquid crystal display device and improve the brightness.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 19, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Jun Won Chang, Dae Hee Lee, Moon Soo Park, Sergey Belyaev