Patents by Inventor Hee-Nam Hwang

Hee-Nam Hwang 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: 20240135744
    Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 25, 2024
    Inventors: Hyun Dae LEE, Il Nam KIM, Hyoung Wook JANG, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
  • Publication number: 20160236443
    Abstract: The present invention relates to an optically transparent composite film for a display, comprising: a polymer substrate containing a transparent thermoplastic base resin; a plasma surface treatment layer formed on one surface of the polymer substrate and surface-modified through plasma treatment; an inorganic gas barrier layer formed on the upper surface of the plasma surface treatment layer; an organic-inorganic hybrid overcoating layer formed on the upper surface of the inorganic gas barrier layer and including a curable product of a curable sol solution; and an inorganic rear layer formed on the other surface of the polymer substrate.
    Type: Application
    Filed: October 8, 2013
    Publication date: August 18, 2016
    Inventors: Hee-Nam HWANG, Yong-Ho PARK, Sang-Sik YOON, Se-Won KIM, Ki-Ho LEE, Mi-Sook NAM
  • Patent number: 7256845
    Abstract: A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the first substrate, a diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: August 14, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong-Weon Moon, Ji-Yong Kim, Sunghoe Yoon, Hee-Nam Hwang
  • Publication number: 20060244355
    Abstract: A plastic substrate for a display panel and method of manufacturing the same are provided. The plastic substrate is obtained by mixing an oligomer of a thermosetting resin, inorganic nanoparticles, and 1,6-hexanedioldiacrylate in a mass ratio of 1:0.8˜1.2:0.8˜1.2. The plastic substrate has transparency and optical isotropy. The method includes preparing a resin composite in which an oligomer of a thermosetting resin, inorganic nanoparticles, 1,6-hexanedioldiacrylate, and a photoinitiator are dissolved and distributed in a solvent; casting a substrate using the resin composite; and curing the substrate by irradiating ultraviolet rays onto the substrate.
    Type: Application
    Filed: February 9, 2006
    Publication date: November 2, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-bae Park, In-sun Kim, Hee-nam Hwang, Takashi Noguchi, Jang-yeon Kwon, Young-soo Park
  • Patent number: 6909485
    Abstract: A reflective liquid crystal display device of the present invention includes: first and second substrates spaced apart from each other, the first and second substrates having sub-pixels; a liquid crystal layer interposed between the first and second substrates; a switching element and a pixel electrode on a rear surface of the second substrate, wherein the switching element and the pixel electrode are formed within a sub-pixel and electrically connected to each other; a retardation film and a polarizer formed in series on a front surface of the second substrate; a double-layered CCF on a front surface of the first substrate, the double-layered CCF including red, green and blue CLC color films in the sub-pixels that respectively reflect wavelengths of red, green and blue colored light so that the sub-pixels produce red, green and blue colors, respectively; and a common electrode on the double-layered CCF layer; wherein the double-layered CCF layer includes a first and second CLC layers, a first alignment layer
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: June 21, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Sunghoe Yoon, Hee-Nam Hwang
  • Publication number: 20050094069
    Abstract: A liquid crystal display device have a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the fist substrate, diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.
    Type: Application
    Filed: December 6, 2004
    Publication date: May 5, 2005
    Inventors: Jong-Weon Moon, Ji-Yong Kim, Sunghoe Yoon, Hee-Nam Hwang
  • Patent number: 6882386
    Abstract: A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the first substrate, a diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 19, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jong-Weon Moon, Ji-Yong Kim, Sunghoe Yoon, Hee-Nam Hwang
  • Publication number: 20040032556
    Abstract: A reflective liquid crystal display device of the present invention includes: first and second substrates spaced apart from each other, the first and second substrates having sub-pixels; a liquid crystal layer interposed between the first and second substrates; a switching element and a pixel electrode on a rear surface of the second substrate, wherein the switching element and the pixel electrode are formed within a sub-pixel and electrically connected to each other; a retardation film and a polarizer formed in series on a front surface of the second substrate; a double-layered CCF on a front surface of the first substrate, the double-layered CCF including red, green and blue CLC color films in the sub-pixels that respectively reflect wavelengths of red, green and blue colored light so that the sub-pixels produce red, green and blue colors, respectively; and a common electrode on the double-layered CCF layer; wherein the double-layered CCF layer includes a first and second CLC layers, a first alignment layer
    Type: Application
    Filed: August 11, 2003
    Publication date: February 19, 2004
    Inventors: Sunghoe Yoon, Hee-Nam Hwang
  • Publication number: 20030112392
    Abstract: A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the first substrate, a diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 19, 2003
    Inventors: Jong-Weon Moon, Ji-Yong Kim, Sunghoe Yoon, Hee-Nam Hwang
  • Patent number: 6252640
    Abstract: The present invention relates to a method for manufacturing a polarization film for a liquid crystal display and, more particularly, to a method for manufacturing a polarization film having improved wide band characteristics and improved reflectivity by binding together plural liquid crystal films having different selective light-reflecting central wavelengths.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: June 26, 2001
    Assignee: LG Cable & Machinery Ltd.
    Inventors: Sung Tae Kim, Tae Min Kim, Yang Kook Kim, Hee Nam Hwang, In Sun Kim