Patents by Inventor Kum-Suek Seo

Kum-Suek Seo 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: 11513381
    Abstract: An optical device is provided. The optical device is 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: May 16, 2019
    Date of Patent: November 29, 2022
    Inventors: In Ju Mun, Kum Suek Seo, Beom Jin Lee, Byoung Kun Jeon, Seong Min Lee
  • Publication number: 20210132430
    Abstract: An optical device is provided. The optical device is 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: Application
    Filed: May 16, 2019
    Publication date: May 6, 2021
    Applicant: LG Chem, Ltd.
    Inventors: In Ju MUN, Kum Suek SEO, Beom Jin LEE, Byoung Kun JEON, Seong Min LEE
  • Patent number: 10656480
    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: Grant
    Filed: April 14, 2017
    Date of Patent: May 19, 2020
    Assignee: 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
  • 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
  • Patent number: 9720267
    Abstract: Provided are a display panel, a backward diode equipped on a bottom surface of the display panel, a packaging film for packaging the backward diode, and a pressure-sensitive adhesive layer formed between the display panel and the packaging film. The packaging film includes a first region corresponding to a top surface of the backward diode, and a second region extending from the first region and corresponding to a side surface of the backward diode. Due to the display device, a bezel region can be minimized.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 1, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Se Woo Yang, Kum Suek Seo, Jong Sung Park, Min Soo Park, Ji Young Hwang, Jae Ho Jung, In Ju Mun, Yong Su Park
  • Publication number: 20150268490
    Abstract: Provided is a packaging film for a display device, which includes a first region corresponding to a top surface of a backward diode equipped on a bottom surface of a display panel; and a second region extending from the first region and corresponding to a side surface of the backward diode. Due to the packaging film, a bezel region can be minimized.
    Type: Application
    Filed: February 20, 2014
    Publication date: September 24, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Se Woo Yang, Kum Suek Seo, Jong Sung Park, Min Soo Park, Ji Young Hwang, Jae Ho Jung, In Ju Mun, Yong Su Park
  • Publication number: 20150260907
    Abstract: Provided are a display panel, a backward diode equipped on a bottom surface of the display panel, a packaging film for packaging the backward diode, and a pressure-sensitive adhesive layer formed between the display panel and the packaging film. The packaging film includes a first region corresponding to a top surface of the backward diode, and a second region extending from the first region and corresponding to a side surface of the backward diode. Due to the display device, a bezel region can be minimized.
    Type: Application
    Filed: February 20, 2014
    Publication date: September 17, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Se Woo Yang, Kum Suek Seo, Jong Sung Park, Min Soo Park, Ji Young Hwang, Jae Ho Jung, In Ju Mun, Yong Su Park
  • Patent number: 8512822
    Abstract: The present invention relates to a retardation film, a method for manufacturing the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a retardation film that includes 1) an acryl-based film, and 2) a coating layer of a negative C type material, the retardation film according to the exemplary embodiment of the present invention may be applied to an IPS (in-plane switching) mode liquid crystal display, and it is possible to control a ratio of an in-plane retardation value and a thickness retardation value of the retardation film.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: August 20, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jae-Ho Jung, Kum-Suek Seo, Jong-Sung Park
  • Publication number: 20110268895
    Abstract: The present invention relates to a retardation film, a method for manufacturing the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a retardation film that includes 1) an acryl-based film, and 2) a coating layer of a negative C type material, the retardation film according to the exemplary embodiment of the present invention may be applied to an IPS (in-plane switching) mode liquid crystal display, and it is possible to control a ratio of an in-plane retardation value and a thickness retardation value of the retardation film.
    Type: Application
    Filed: June 24, 2010
    Publication date: November 3, 2011
    Inventors: Jae-Ho Jung, Kum-Suek Seo, Jong-Sung Park
  • Patent number: 7018470
    Abstract: The present invention provides a rubbing device including a base roller assembly that suspends and suspends and otherwise supports a base film to convey the same in one direction; a rubbing roller assembly that suspends and otherwise supports a rubbing cloth, and that moves the rubbing cloth in a direction opposite a conveying direction of the base film to thereby realize a rubbing treatment by contact between the rubbing cloth and the base film; and a rotating apparatus provided under the rubbing roller assembly and that rotates the entire rubbing roller assembly to a particular angle greater than 0° and up to and including 180° in the clockwise or counterclockwise direction with respect to the conveying direction of the base film.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: March 28, 2006
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-Su Yu, Jong-Sung Park, Du-Hyun Shin, Kum-Suek Seo
  • Publication number: 20040241326
    Abstract: The present invention provides a rubbing device including a base roller assembly that suspends and otherwise supports a base film to convey the same in one direction; a rubbing roller assembly that suspends and otherwise supports a rubbing cloth, and that moves the rubbing cloth in a direction opposite a conveying direction of the base film to thereby realize a rubbing treatment by contact between the rubbing cloth and the base film; and a rotating apparatus provided under the rubbing roller assembly and that rotates the entire rubbing roller assembly to a particular angle within the range of 0-180° in the clockwise or counterclockwise direction with respect to the conveying direction of the base film.
    Type: Application
    Filed: July 10, 2003
    Publication date: December 2, 2004
    Inventors: Jeong-Su Yu, Jong-Sung Park, Du-Hyun Shin, Kum-Suek Seo