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).
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Patent number: 9207386Abstract: 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: GrantFiled: September 3, 2009Date of Patent: December 8, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Sung-Hun Kim, Hyeok-Joon Yoon, Byoung-Ku Kim, Jae-Hyun Park
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Patent number: 9188732Abstract: 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: GrantFiled: December 4, 2013Date of Patent: November 17, 2015Assignee: LG Display Co., Ltd.Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
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Patent number: 8908124Abstract: 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: GrantFiled: July 28, 2010Date of Patent: December 9, 2014Assignee: LG Display Co., Ltd.Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won Taek Moon, Young-Ik Hwang
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Patent number: 8842238Abstract: 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: GrantFiled: November 19, 2010Date of Patent: September 23, 2014Assignee: LG Display Co., Ltd.Inventors: Hee Kyung Lee, Byoung Ku Kim, Jun Ho Bae, Yong Ik Hwang
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Publication number: 20140169036Abstract: 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: ApplicationFiled: December 4, 2013Publication date: June 19, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
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Patent number: 8558966Abstract: 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: GrantFiled: December 22, 2008Date of Patent: October 15, 2013Assignee: LG Display Co., Ltd.Inventors: Byoung-Ku Kim, Jae-hyun Park
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Patent number: 8284346Abstract: 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: GrantFiled: December 24, 2008Date of Patent: October 9, 2012Assignee: LG Display Co., Ltd.Inventors: Jae-Hyun Park, Sung-Hun Kim, Jong-Keun Shin, Jin-Hyuk Kwon, Byoung-Ku Kim
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Publication number: 20110141401Abstract: 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: ApplicationFiled: November 19, 2010Publication date: June 16, 2011Inventors: Hee Kyung LEE, Byoung Ku Kim, Jun Ho Bae, Yong Ik Hwang
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Publication number: 20110051046Abstract: 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: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Inventors: Sung-Hun KIM, Byoung-Ku Kim, Jae-Hyun Park, Hyeok-Joon Yoon
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Publication number: 20110025950Abstract: 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: ApplicationFiled: July 28, 2010Publication date: February 3, 2011Inventors: Sang-Hyun LEE, Byoung-Ku Kim, Won Taek Moon, Young-Ik Hwang
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Publication number: 20100165241Abstract: 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: ApplicationFiled: September 3, 2009Publication date: July 1, 2010Inventors: Sung-Hun Kim, Hyeok-Joon Yoon, Byoung-Ku Kim, Jae-Hyun Park
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Publication number: 20100060817Abstract: 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: ApplicationFiled: December 24, 2008Publication date: March 11, 2010Applicant: LG DISPLAY CO., LTD.Inventors: Jae-Hyun Park, Sung-Hun Kim, Jong-Keun Shin, Jin-Hyuk Kwon, Byoung-Ku Kim
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Publication number: 20090322988Abstract: 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: ApplicationFiled: December 22, 2008Publication date: December 31, 2009Applicant: LG DISPLAY CO., LTD.Inventors: Byoung-Ku KIM, Jae-hyun PARK
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Patent number: 7492421Abstract: 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: GrantFiled: March 26, 1999Date of Patent: February 17, 2009Assignee: LG Display Co., Ltd.Inventors: Byoung Ku Kim, Se Chang Won
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Patent number: 7184110Abstract: 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: GrantFiled: April 30, 2001Date of Patent: February 27, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Byoung Ku Kim, Jae Bum Kim
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Patent number: 6914646Abstract: 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: GrantFiled: May 5, 2003Date of Patent: July 5, 2005Assignee: L.G.Philips LCD Co., Ltd.Inventor: Byoung-Ku Kim
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Publication number: 20030231264Abstract: 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: ApplicationFiled: May 5, 2003Publication date: December 18, 2003Inventor: Byoung-Ku Kim
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Patent number: 6580478Abstract: 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: GrantFiled: February 22, 2001Date of Patent: June 17, 2003Assignee: LG. Philips LCD Co., LtdInventor: Byoung-Ku Kim
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Patent number: 6411352Abstract: 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: GrantFiled: August 9, 1999Date of Patent: June 25, 2002Assignee: LG. Philips LCD Co., Ltd.Inventor: Byoung Ku Kim
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Publication number: 20020024623Abstract: 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: ApplicationFiled: April 30, 2001Publication date: February 28, 2002Inventors: Byoung Ku Kim, Jae Bum Kim