Patents by Inventor Dong-Gyun Ra

Dong-Gyun Ra 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: 7927000
    Abstract: A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L -shape.The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Joo Nam, Sang-Hoon Park, Dong-Gyun Ra
  • Publication number: 20100283805
    Abstract: A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L-shape. The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.
    Type: Application
    Filed: July 16, 2010
    Publication date: November 11, 2010
    Inventors: Young-Joo Nam, Sang-Hoon Park, Dong-Gyun Ra
  • Publication number: 20100283714
    Abstract: A liquid crystal display (“LCD”) includes; a gate line, a plurality of pairs of a first data line and a second data line which border a plurality of pixel regions and are disposed respectively on both sides of each pixel region, a plurality of pairs of first and second thin-film transistors (“TFTs”) which are connected to the gate line and a pair of the first and second data lines, and a first and second subpixel electrode disposed in each pixel region and connected to the first and second TFTs, respectively, wherein the pixel regions include first through third pixel regions arranged in the first direction, wherein at least one of the first and second TFTs of the second pixel region is disposed on a same side of an adjacent data line as the first and second subpixel electrodes of one of the first and third pixel regions.
    Type: Application
    Filed: December 3, 2009
    Publication date: November 11, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-Beom CHO, Dong-Gyun RA, Yong-Jun CHOI, Woo-Jin JUNG
  • Patent number: 7784991
    Abstract: A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L-shape. The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: August 31, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Joo Nam, Sang-Hoon Park, Dong-Gyun Ra
  • Patent number: 7667789
    Abstract: A backlight unit which includes a structure in which the sensitivity of a light sensor for detecting color reproducibility of white light is increased, and a liquid crystal display (“LCD”) device having the same. The backlight unit includes a light source which generates light, a light guide plate which guides the light incident from the light source, a light sensor which detects the light emitted from the light guide plate and a mold frame which receives the light source, the light guide plate, and the light sensor. The mold frame includes a receiving recess which receives the light sensor, and a light sensing structure formed on a sidewall thereof being in contact with a side of the light guide plate which reflects the light emitted from the light guide plate and provides the light emitted from the light guide plate to the light sensor.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: February 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Chang Choi, Dong-Gyun Ra
  • Publication number: 20100033414
    Abstract: A liquid crystal display includes a liquid crystal panel having a plurality of pixels, a lookup table which stores information about a plurality of digital common voltages, each of the plurality of digital common voltages corresponding to at least one gray value, a timing controller which analyzes gray characteristics of image signals to be displayed on the liquid crystal panel and which selects one of the digital common voltages based on an analysis result, and a common voltage generator which generates an analog common voltage in response to the digital common voltage selected by the timing controller and which supplies the analog common voltage to the liquid crystal panel.
    Type: Application
    Filed: February 3, 2009
    Publication date: February 11, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Won JEONG, Bong-Im PARK, Yong-Jun CHOI, Bong-Ju JUN, Yun-Jae KIM, Dong-Gyun RA, Dong-Beom CHO
  • Publication number: 20100007650
    Abstract: A display device includes an image signal processing unit to output a high-speed image signal with the aid of an image interpolation unit outputting a low-speed image signal. The display device includes an image signal processing unit to receive a primitive image signal having a first frequency and to output a 4× image signal having a second frequency. The second frequency is four times the first frequency. The display device includes a display panel displaying an image corresponding to the 4× image signal. The primitive image signal includes an (n?1)-th frame (where n is a natural number) and an n-th frame. The image signal processing unit includes a first image interpolation unit and second image interpolation unit, which receive the (n?1)-th frame and the n-th frame and output a 2× image signal including at least one interpolated frame.
    Type: Application
    Filed: June 23, 2009
    Publication date: January 14, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hee-Jin CHOI, Sang-Soo Kim, Dong-Won Park, Po-Yun Park, Bong-Hyun You, Dong-Gyun Ra
  • Publication number: 20090190059
    Abstract: A display system includes a housing member which has space therein, a plurality of light source units which are placed in the space, a diffusion member which is disposed on the light source units, a liquid crystal display panel which is disposed on the diffusion member, an infrared camera unit which is interposed between the liquid crystal display panel and the diffusion member and photograph a front region of the liquid crystal display panel, and a plurality of infrared light sources which emit infrared light to the front region of the liquid crystal display panel.
    Type: Application
    Filed: July 24, 2008
    Publication date: July 30, 2009
    Inventor: Dong-Gyun RA
  • Publication number: 20080284697
    Abstract: A display apparatus includes a first substrate, a second substrate, and a driver chip. The first substrate includes a plurality of gate lines disposed in the display area and extended in a first direction, a plurality of data lines disposed on a gate insulating layer insulating the gate lines and extended in a second direction substantially perpendicular to the first direction, and a gate driving circuit section disposed in the first peripheral area adjacent to first ends of the gate lines. The second substrate is opposite to the first substrate. A liquid crystal is interposed between the first and second substrates. The driver chip is disposed in the second peripheral area adjacent to second ends of the gate lines opposite to the first ends so that the width of the upper and lower portions of the display area may be decreased.
    Type: Application
    Filed: September 24, 2007
    Publication date: November 20, 2008
    Inventors: Young-Joo Nam, Sang-Hoon Park, Dong-Gyun Ra
  • Publication number: 20080204434
    Abstract: A display device includes a display panel, a first source driver chip and a connection section. The display panel includes a plurality of source lines, each of which is electrically connected to a plurality of pixels. The first source driver chip is electrically connected to a first group including a first of the source lines to output a data signal having a first polarity to the first source line. The connection section electrically connects the first source line to a last source line of the source lines to provide the data signal having the first polarity to the last source line without need for an additional source driver chip to drive the (mk+1)-th source line.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 28, 2008
    Inventors: Min-Cheol Lee, Dong-Gyun Ra
  • Publication number: 20080198297
    Abstract: A backlight unit which includes a structure in which the sensitivity of a light sensor for detecting color reproducibility of white light is increased, and a liquid crystal display (“LCD”) device having the same. The backlight unit includes a light source which generates light, a light guide plate which guides the light incident from the light source, a light sensor which detects the light emitted from the light guide plate and a mold frame which receives the light source, the light guide plate, and the light sensor. The mold frame includes a receiving recess which receives the light sensor, and a light sensing structure formed on a sidewall thereof being in contact with a side of the light guide plate which reflects the light emitted from the light guide plate and provides the light emitted from the light guide plate to the light sensor.
    Type: Application
    Filed: December 17, 2007
    Publication date: August 21, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Chang CHOI, Dong-Gyun RA
  • Publication number: 20080170173
    Abstract: A slim backlight assembly that is capable of accurately adjusting the whiteness level of the generated light is presented. The backlight assembly includes: a light guide plate having a light entering surface, a light facing surface that is substantially parallel to the light entering surface, a light emitting surface connecting first edges of the light entering surface and the light facing surface, and a bottom surface connecting second edges of the light entering surface and the light facing surface. A light source unit provides light to the light entering surface. At least one color sensor is disposed to receive light from the light guide plate, and at least one light amplifying member is disposed between the light guide plate and the color sensor to collect and concentrate the light from the light guide plate on the color sensor.
    Type: Application
    Filed: November 13, 2007
    Publication date: July 17, 2008
    Inventors: Sang-hoon Park, Young-joo Nam, Dong-gyun Ra
  • Publication number: 20080084520
    Abstract: A backlight assembly including a light emitting diode (“LED”) assembly including a plurality of LED devices, a mold frame receiving a light guiding plate and including a coupling portion disposed at a side of a rear surface of the mold frame, and a sensor combined with the coupling portion and sensing an amount of light emitted from the plurality of LED devices.
    Type: Application
    Filed: October 3, 2007
    Publication date: April 10, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Young-joo NAM, Sang-hoon PARK, Jae-chang CHOI, Dong-gyun RA
  • Publication number: 20080074903
    Abstract: A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L-shape. The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 27, 2008
    Inventors: Young-Joo NAM, Sang-Hoon Park, Dong-Gyun Ra
  • Publication number: 20080030645
    Abstract: A light emitting unit includes a power supply line that supplies a power supply voltage to a light source part and a ground member that grounds the light source part, and the power supply line is disposed on a different layer from that of the ground member. The light emitting unit of the present invention may be included in a backlight assembly which may be included in a display assembly.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 7, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-Joo NAM, Dong-Gyun RA
  • Publication number: 20040207620
    Abstract: The liquid crystal display device of the present invention comprises a timing controller, a gate driving unit, a data driving unit, a liquid crystal panel, a lamp, an inverter, a mode setting unit, and an inverter control unit. The mode setting unit discriminates a moving-image mode and a still-image mode and provides a specific control signal to the inverter control unit in accordance with the discriminated mode. The inverter control unit operates the inverter in either synchronous mode or asynchronous mode by applying or withholding a timing signal to the inverter, in response to the control signal from the mode setting unit. Preferably, the timing signal is a gate select signal CPV that becomes a horizontal synchronous signal.
    Type: Application
    Filed: March 23, 2004
    Publication date: October 21, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Dong-gyun Ra