Patents by Inventor Hwal Choi

Hwal 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).

  • Patent number: 10008695
    Abstract: A flexible display device includes a display module and a window member disposed on the display module. The window member includes a base film, elastomer patterns disposed on one surface of the base film, and a hard coating layer disposed on the one surface of the base film to cover the elastomer patterns.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: June 26, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youngsang Park, Inseo Kee, Jungho Park, Kyu-taek Lee, Chulho Jeong, Hwal Choi
  • Publication number: 20130128170
    Abstract: A liquid crystal display device is disclosed which, according to one aspect, includes first and second substrates facing each other and a liquid crystal layer interposed between the first and second substrates. The first substrate includes a plurality of first pixels arranged in a first pixel column and a plurality of second pixels arranged in a second pixel column. The first pixels and the second pixels are connected to different ones of a plurality of gate lines and connected to any one of a plurality of data lines.
    Type: Application
    Filed: March 8, 2012
    Publication date: May 23, 2013
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Myong Ho Kwon, Chang-Jin Lee, Chang-Gil Lee, Tae-Sik Kim, Hwal Choi
  • Patent number: 8325290
    Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof; a light source disposed adjacent to the first light guide block; a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel; a dual brightness enhancement film provided in a region corresponding to the opening of the housing.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: December 4, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Mun-Cheol Lee, Won-Ki Cho, Hwal Choi
  • Patent number: 7920228
    Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: April 5, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, Hwal Choi, David Lee
  • Patent number: 7916243
    Abstract: A dual liquid crystal display (LCD) device including a first LCD panel displaying an image on a first surface; a second LCD panel formed on the same substrate to display an image on a second surface; a light source disposed at an adjacent side under the first LCD panel; a light guide disposed under the first and second LCD panels and including a first light guide block corresponding to the first LCD panel and having dot patterns formed in a first surface and a second light guide block corresponding to the second LCD panel and having taper-cascade grooves formed on a first surface; and a housing settling the first and second LCD panels, the light source and the light guide and having an opening to correspond to an image display surface of the second LCD panel.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 29, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, David Lee, Hwal Choi
  • Patent number: 7907235
    Abstract: A dual Liquid Crystal Display (LCD), having a transmissive first panel and a reflective second panel, includes: a first LCD panel and a second LCD panel arranged on the same substrate, the first LCD panel displaying an image on a first surface thereof and the second LCD panel displaying an image on a second surface thereof; a backlight unit arranged on a bottom of the first LCD panel; and a housing, anchoring the first and second LCD panels and the backlight unit, and having an opening corresponding to an image-displaying surface of the second LCD panel.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: March 15, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, Do-Young Kim, David Lee, Won-Ki Cho, Hwal Choi
  • Publication number: 20090316075
    Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.
    Type: Application
    Filed: April 1, 2009
    Publication date: December 24, 2009
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, Hwal Choi, David Lee
  • Publication number: 20090316071
    Abstract: A dual liquid crystal display (LCD) device including a first LCD panel displaying an image on a first surface; a second LCD panel formed on the same substrate to display an image on a second surface; a light source disposed at an adjacent side under the first LCD panel; a light guide disposed under the first and second LCD panels and including a first light guide block corresponding to the first LCD panel and having dot patterns formed in a first surface and a second light guide block corresponding to the second LCD panel and having taper-cascade grooves formed on a first surface; and a housing settling the first and second LCD panels, the light source and the light guide and having an opening to correspond to an image display surface of the second LCD panel.
    Type: Application
    Filed: April 9, 2009
    Publication date: December 24, 2009
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, David Lee, Hwal Choi
  • Publication number: 20090316082
    Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof; a light source disposed adjacent to the first light guide block; a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel; a dual brightness enhancement film provided in a region corresponding to the opening of the housing.
    Type: Application
    Filed: March 26, 2009
    Publication date: December 24, 2009
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Mun-Cheol Lee, Won-Ki Cho, Hwal Choi
  • Publication number: 20090185098
    Abstract: A dual Liquid Crystal Display (LCD), having a transmissive first panel and a reflective second panel, includes: a first LCD panel and a second LCD panel arranged on the same substrate, the first LCD panel displaying an image on a first surface thereof and the second LCD panel displaying an image on a second surface thereof; a backlight unit arranged on a bottom of the first LCD panel; and a housing, anchoring the first and second LCD panels and the backlight unit, and having an opening corresponding to an image-displaying surface of the second LCD panel.
    Type: Application
    Filed: August 14, 2008
    Publication date: July 23, 2009
    Inventors: Kyu-Han Bae, Shawn Kim, Do-Young Kim, David Lee, Won-Ki Cho, Hwal Choi