Patents by Inventor Byoung-Ku Kim

Byoung-Ku 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).

  • Patent number: 9207386
    Abstract: A backlight unit for a display device includes a light guide plate; a reflective sheet under the light guide plate; a lamp at least one side of the light guide plate and providing a light into the light guide plate; and an optical sheet disposed on the light guide plate and including a first lenticular sheet, the first lenticular sheet including a base film for diffusing the light through the light guide plate, a first lenticular lens disposed on a front surface of the base film and having a half-cylinder shape and a first printing pattern on at least one edge of a rear surface of the base film.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: December 8, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Hun Kim, Hyeok-Joon Yoon, Byoung-Ku Kim, Jae-Hyun Park
  • Patent number: 9188732
    Abstract: A display device and a method of fabricating a reflective sheet for the same are provided. The display device includes: a display panel to display an image, a plurality of light emitting diodes (LEDs) to: generate and supply light to the display panel, a light guide plate to guide the light to the display panel, and a reflective sheet to reflect light toward a cover bottom below the LEDs toward the light guide plate, the reflective sheet including: a reflective layer, first and second skin layers respectively on upper and lower portions of the reflective layer, the first and second skin layers each including an embossing surface including a plurality of first reflective patterns to: prevent adhesion between the reflective layer and the light guide plate, and increase efficiency of light, and the reflective layer including a plurality of second reflective patterns, each including a filler in an air layer.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: November 17, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
  • Patent number: 8908124
    Abstract: A light guide plate for a backlight unit of a liquid crystal display device includes one side surface where light from a first light source is incident; the other side surface opposite to the one side surface; a front surface combining the one and the other one side surfaces; and a rear surface including a plurality of light guide patterns, each of the plurality of light guide patterns including a protruding portion and a groove portion, wherein one of the protruding portion and the groove portion is positioned at a center of the other one of the protruding portion and the groove portion.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: December 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won Taek Moon, Young-Ik Hwang
  • Patent number: 8842238
    Abstract: A backlight unit being scan-driven is discussed. The backlight unit according to an embodiment includes light sources configured to emit light, and a light guide plate disposed parallel to the light sources and configured to convert spotted lights entered from the light sources into two-dimensional light. The light guide plate includes a plurality of air barriers arranged at a fixed interval and configured to guide lights from the light sources in blocks with a width of the fixed interval.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: September 23, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kyung Lee, Byoung Ku Kim, Jun Ho Bae, Yong Ik Hwang
  • Publication number: 20140169036
    Abstract: A display device and a method of fabricating a reflective sheet for the same are provided. The display device includes: a display panel to display an image, a plurality of light emitting diodes (LEDs) to: generate and supply light to the display panel, a light guide plate to guide the light to the display panel, and a reflective sheet to reflect light toward a cover bottom below the LEDs toward the light guide plate, the reflective sheet including: a reflective layer, first and second skin layers respectively on upper and lower portions of the reflective layer, the first and second skin layers each including an embossing surface including a plurality of first reflective patterns to: prevent adhesion between the reflective layer and the light guide plate, and increase efficiency of light, and the reflective layer including a plurality of second reflective patterns, each including a filler in an air layer.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 19, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
  • Patent number: 8558966
    Abstract: A liquid crystal display device capable of preventing a split between a light guide plate and a prism sheet disposed at an upper side thereof and improving concentration efficiency, the device including a liquid crystal panel configured to represent an image, a lamp disposed below the liquid crystal panel to provide light to the liquid crystal panel, a light guide plate having the lamp disposed at least at one side thereof, and a birefringence optical sheet disposed between the liquid crystal panel and the light guide plate, and having a first prism pattern with a first refractive index, the pattern facing the liquid crystal panel, and a second prism pattern with a second refractive index higher than the first refractive index, the pattern facing the light guide plate.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 15, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Byoung-Ku Kim, Jae-hyun Park
  • Patent number: 8284346
    Abstract: A backlight unit for a liquid crystal display panel includes a diffusor that diffuses light emitted from a front surface thereof, a reflective plate that reflects light toward a rear surface of the diffusor; and a collimator that collimates the light emitted from the front surface of the diffusor toward the liquid crystal display panel. The collimator includes a base layer that refracts the diffused light from the diffusor toward the liquid crystal panel, a collimating layer of lenses disposed along two perpendicular directions on a front surface of the base layer, and a reflective pattern on a rear surface of the base layer along a boundary of each of the lenses, the reflective pattern exposing an aperture portion of the base layer facing each of the lenses.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: October 9, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Jae-Hyun Park, Sung-Hun Kim, Jong-Keun Shin, Jin-Hyuk Kwon, Byoung-Ku Kim
  • Publication number: 20110141401
    Abstract: A backlight unit being scan-driven is discussed. The backlight unit according to an embodiment includes light sources configured to emit light, and a light guide plate disposed parallel to the light sources and configured to convert spotted lights entered from the light sources into two-dimensional light. The light guide plate includes a plurality of air barriers arranged at a fixed interval and configured to guide lights from the light sources in blocks with a width of the fixed interval.
    Type: Application
    Filed: November 19, 2010
    Publication date: June 16, 2011
    Inventors: Hee Kyung LEE, Byoung Ku Kim, Jun Ho Bae, Yong Ik Hwang
  • Publication number: 20110051046
    Abstract: Disclosed is to decrease a fabrication cost and reduce a thickness of a liquid crystal display device by processing light transmitted through a liquid guide plate by virtue of a single optical sheet, the optical sheet including a base film, a plurality of prism patterns extending from one side to another side of the base film, and refraction layers between the prism patterns, thereby totally reflecting light incident from the light guide plate to be supplied to a liquid crystal display panel.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 3, 2011
    Inventors: Sung-Hun KIM, Byoung-Ku Kim, Jae-Hyun Park, Hyeok-Joon Yoon
  • Publication number: 20110025950
    Abstract: A light guide plate for a backlight unit of a liquid crystal display device includes one side surface where light from a first light source is incident; the other side surface opposite to the one side surface; a front surface combining the one and the other one side surfaces; and a rear surface including a plurality of light guide patterns, each of the plurality of light guide patterns including a protruding portion and a groove portion, wherein one of the protruding portion and the groove portion is positioned at a center of the other one of the protruding portion and the groove portion.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Inventors: Sang-Hyun LEE, Byoung-Ku Kim, Won Taek Moon, Young-Ik Hwang
  • Publication number: 20100165241
    Abstract: A backlight unit for a display device includes a light guide plate; a reflective sheet under the light guide plate; a lamp at least one side of the light guide plate and providing a light into the light guide plate; and an optical sheet disposed on the light guide plate and including a first lenticular sheet, the first lenticular sheet including a base film for diffusing the light through the light guide plate, a first lenticular lens disposed on a front surface of the base film and having a half-cylinder shape and a first printing pattern on at least one edge of a rear surface of the base film.
    Type: Application
    Filed: September 3, 2009
    Publication date: July 1, 2010
    Inventors: Sung-Hun Kim, Hyeok-Joon Yoon, Byoung-Ku Kim, Jae-Hyun Park
  • Publication number: 20100060817
    Abstract: A backlight unit for a liquid crystal display panel includes a diffusor that diffuses light emitted from a front surface thereof, a reflective plate that reflects light toward a rear surface of the diffusor; and a collimator that collimates the light emitted from the front surface of the diffusor toward the liquid crystal display panel. The collimator includes a base layer that refracts the diffused light from the diffusor toward the liquid crystal panel, a collimating layer of lenses disposed along two perpendicular directions on a front surface of the base layer, and a reflective pattern on a rear surface of the base layer along a boundary of each of the lenses, the reflective pattern exposing an aperture portion of the base layer facing each of the lenses.
    Type: Application
    Filed: December 24, 2008
    Publication date: March 11, 2010
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jae-Hyun Park, Sung-Hun Kim, Jong-Keun Shin, Jin-Hyuk Kwon, Byoung-Ku Kim
  • Publication number: 20090322988
    Abstract: A liquid crystal display device capable of preventing a split between a light guide plate and a prism sheet disposed at an upper side thereof and improving concentration efficiency, the device including a liquid crystal panel configured to represent an image, a lamp disposed below the liquid crystal panel to provide light to the liquid crystal panel, a light guide plate having the lamp disposed at least at one side thereof, and a birefringence optical sheet disposed between the liquid crystal panel and the light guide plate, and having a first prism pattern with a first refractive index, the pattern facing the liquid crystal panel, and a second prism pattern with a second refractive index higher than the first refractive index, the pattern facing the light guide plate.
    Type: Application
    Filed: December 22, 2008
    Publication date: December 31, 2009
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Byoung-Ku KIM, Jae-hyun PARK
  • Patent number: 7492421
    Abstract: A flat panel display device uses a side mounting method to hold a flat panel display. In particular, the flat panel display device has an outer casing having at least one side wall, a frame that supports a liquid crystal display panel and has at least one side panel, a top case configured to engage the frame with the liquid crystal panel therebetween and a bracket disposed between the side panels of the frame and the top case. The top case has at least one side panel and the side panel defines an opening. The bracket has a projecting part configured to be fitted in the opening of the side panel of the top case. The frame is secured to the side wall of the outer casing with a fastener coupled to the bracket through the outer casing.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: February 17, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Byoung Ku Kim, Se Chang Won
  • Patent number: 7184110
    Abstract: A liquid crystal display device that is adapted for preventing a damage and a wrinkle of optical sheets caused by vibration or external impact. In the device, optical sheets are included in a backlight assembly. A main frame is mounted with the backlight assembly. At least one shaft is installed at the main frame to fix the optical sheets thereon. Accordingly, the optical sheets resist damage, such as a scratch, etc. caused by a motion of the liquid crystal display or external vibration. Furthermore, wrinkling of the optical sheets in a high temperature environment is minimized.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: February 27, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byoung Ku Kim, Jae Bum Kim
  • Patent number: 6914646
    Abstract: A liquid crystal display device module has a structure for preventing wrinkles in the reflective sheet by providing a means for supporting a light guide plate. In one embodiment, the means includes a supporting member positioned between a supporting frame and a light guide plate. The thickness of the supporting member is larger than that of the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat. Moreover, in one embodiment the supporting frame has a step portion in a peripheral area. The step portion has a step that has a height being larger than the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat, too. Accordingly, wrinkles do not occur in the reflective sheet, and the quality of the LCD module is raised, and thus a liquid crystal display device having good display characteristics can be attained.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: July 5, 2005
    Assignee: L.G.Philips LCD Co., Ltd.
    Inventor: Byoung-Ku Kim
  • Publication number: 20030231264
    Abstract: A liquid crystal display device module has a structure for preventing wrinkles in the reflective sheet by providing a means for supporting a light guide plate. In one embodiment, the means includes a supporting member positioned between a supporting frame and a light guide plate. The thickness of the supporting member is larger than that of the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat. Moreover, in one embodiment the supporting frame has a step portion in a peripheral area. The step portion has a step that has a height being larger than the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat, too. Accordingly, wrinkles do not occur in the reflective sheet, and the quality of the LCD module is raised, and thus a liquid crystal display device having good display characteristics can be attained.
    Type: Application
    Filed: May 5, 2003
    Publication date: December 18, 2003
    Inventor: Byoung-Ku Kim
  • Patent number: 6580478
    Abstract: A liquid crystal display device module has a structure for preventing wrinkles in the reflective sheet by providing a means for supporting a light guide plate. In one embodiment, the means includes a supporting member positioned between a supporting frame and a light guide plate. The thickness of the supporting member is larger than that of the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat. Moreover, in one embodiment the supporting frame has a step portion in a peripheral area. The step portion has a step that has a height being larger than the reflective sheet, and thus the reflective sheet is prevented from being affected by internal and external heat, too. Accordingly, wrinkles do not occur in the reflective sheet, and the quality of the LCD module is raised, and thus a liquid crystal display device having good display characteristics can be attained.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: June 17, 2003
    Assignee: LG. Philips LCD Co., Ltd
    Inventor: Byoung-Ku Kim
  • Patent number: 6411352
    Abstract: A slim liquid crystal display is adapted to fixing a printed circuit board (PCB) to a frame and making a slimmer liquid crystal display. The slim liquid crystal display includes a frame mounted with a liquid crystal module, a printed circuit board, and a board holder engaged with the frame and loaded on the printed circuit board, thereby securing the printed circuit board to the frame.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: June 25, 2002
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Byoung Ku Kim
  • Publication number: 20020024623
    Abstract: A liquid crystal display device that is adapted for preventing a damage and a wrinkle of optical sheets caused by vibration or external impact. In the device, optical sheets are included in a backlight assembly. A main frame is mounted with the backlight assembly. At least one shaft is installed at the main frame to fix the optical sheets thereon. Accordingly, the optical sheets resist damage, such as a scratch, etc. caused by a motion of the liquid crystal display or external vibration. Furthermore, wrinkling of the optical sheets in a high temperature environment is minimized.
    Type: Application
    Filed: April 30, 2001
    Publication date: February 28, 2002
    Inventors: Byoung Ku Kim, Jae Bum Kim