Patents by Inventor Byoung-Sun Na

Byoung-Sun Na 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: 20090290114
    Abstract: A first slit pattern is formed in a display substrate and a display panel of vertical alignment mode having the display substrate. The first slit pattern includes slits, a pair of projections and a pair of notches. A divergence point where the slits meet each other and an incision portion of the slits have the same function as the pair of projections in the generation of a singular point of liquid crystal. A contact hole exposing a part of an output electrode of a switching element is formed at a protective layer of an array substrate. A step recess is formed at a protective layer corresponding to a storage electrode, a divergence point of the slits is arranged to correspond to the storage electrode. The singular point of the liquid crystal is induced to occur at a regular position, and thus afterimages and spots can be prevented.
    Type: Application
    Filed: April 6, 2009
    Publication date: November 26, 2009
    Inventors: Hye-Seok NA, Byoung-Sun NA, Won-Hee LEE, Ho-Kyoon KWON, Ji-Hyun KWON
  • Publication number: 20090251645
    Abstract: A liquid crystal display includes a first substrate with pixel electrodes, and a second substrate with a common electrode facing the first substrate. The common electrode has depression patterns corresponding to the pixel electrodes. The side wall of each depression pattern is at an angle of 30-120 degrees with respect to the first substrate. The depression patterns of the common electrode are formed through making depression patterns at color filters. In this structure, the liquid crystal display bears wide viewing angle and good picture quality.
    Type: Application
    Filed: June 12, 2009
    Publication date: October 8, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yea-Sun Yoon, Seung-Beom Park, Byoung-Sun Na
  • Patent number: 7595207
    Abstract: To improve product yield, light is scanned on a layer on a substrate through a mask. A pattern is formed on the substrate by the exposure of the layer. The direction of scanning is substantially perpendicular to a longitudinal direction of the pattern. The capacitance difference due to coupling of the pattern to be formed and a conductive layer formed through an insulation layer is reduced. Thus, failures of a display device are reduced and the product yield is increased.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: September 29, 2009
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Soon-Il Ahn, Byoung-Sun Na, Jeong-Young Lee, You-Lee Song
  • Publication number: 20090230396
    Abstract: Provided are a thin-film transistor (TFT) substrate and a display device having the same. In the TFT substrate and the display device having the same, first and second drain electrodes of first and second TFTs connected to first and second pixel electrodes, respectively, are vertically bent a plurality of times. The distance between each of the first and second source electrodes and the first or second drain electrode is maintained at a minimum interline gap to increase the distance between a data line and each of the first and second drain electrodes and minimize the length of a region of each of the first and second drain electrodes adjacent to the data line. Consequently, a coupling capacitance between the data line and each of the first and second drain electrodes can be reduced, and each unit pixel region can have a uniform parasite capacitance within a predetermined range. In addition, the luminance deviation of a display device, which performs inversion driving, can be reduced.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 17, 2009
    Inventors: Hye-Seok NA, Won- Hee Lee, Ho-Kyoon Kwon, Byoung-Sun Na, Soon-Il Ahn, Ji-Hyun Kwon
  • Patent number: 7573554
    Abstract: A black matrix and a color filter are formed on a substrate, a indium-tin-oxide (ITO) common electrode are deposited thereon and then protrusion pattern made of sensitive material such as photoresist are formed on the common electrode with 3 to 20 micron width. A vertical alignment layer is coated thereon to complete a color filter substrate. After a thin film transistor (TFT) and a passivation film are formed on the other substrate, ITO is deposited on the passivation film and patterned to form a pixel electrode which contains open areas with 3 to 20 micron width. Then, a vertical alignment layer is coated to complete a TFT substrate. Two substrates are assembled in the manner that the apertures and the protrusion patterns are arranged on shifts and liquid crystal having negative dielectric anisotropy is injected between the substrates. Each Polarizer is attached at the outer surfaces of the LCD substrates. Compensation films may be attached between the polarizer and the substrate.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: August 11, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Seung-Beom Park, Byoung-Sun Na
  • Patent number: 7570332
    Abstract: A liquid crystal display includes; a first substrate, a gate line disposed on the first substrate, a pixel electrode disposed on the first substrate, a second substrate facing the first substrate, a common electrode disposed on the second substrate, a first domain partitioning member disposed on one of the first substrate and the second substrate and including a first portion disposed in a direction substantially parallel to the gate line, a second portion obliquely extending from an end of the first portion, and a third portion obliquely extending from the end of the first portion, and a second domain partitioning member disposed on one of the first substrate and the second substrate and including a fourth portion disposed in a direction substantially parallel to the gate line.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: August 4, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Seung-Beom Park, Byoung-Sun Na
  • Publication number: 20090189835
    Abstract: A display device according to one or more embodiments includes a display panel, a source driver part and a gate driver part. The display panel includes a first substrate and a second substrate. According to an embodiment, the first substrate includes a first side extending in a substantially straight line and having a first end and a second end, and a second side extending in a substantially round shape from the first end of the first side to the second end of the first side. A plurality of gate lines is substantially parallel with the first side. The second substrate has a shape corresponding to the first substrate. The source driver part is disposed at the first side, and the gate driver part is disposed at the second side. Thus, a display panel having various shapes besides a rectangular shape may be manufactured according to one or more embodiments.
    Type: Application
    Filed: December 16, 2008
    Publication date: July 30, 2009
    Inventors: Dong-Gyu KIM, Byoung-Sun Na, Gwang-Bum Ko
  • Publication number: 20090189839
    Abstract: A liquid crystal display including a liquid crystal display panel having a display area that displays an image in response to a gate signal and a data signal, and a peripheral area including first, second, third and fourth peripheral areas surrounding the display area; a plurality of gate drivers performing a scanning operating in response to a first control signal to output the gate signal, the gate drivers being arranged in the first peripheral area; a plurality of data drivers arranged in the second peripheral area adjacent to a gate driver that last performs the scanning operating among the gate drivers; and a signal transmission line connected to a gate driver that first performs the scanning operation among the gate drivers, and routed through the third and fourth peripheral areas opposite to the first and second peripheral areas, respectively, to provide the first control signal to the gate drivers.
    Type: Application
    Filed: December 2, 2008
    Publication date: July 30, 2009
    Inventors: GWANG BUM KO, Byoung-Sun Na, Won-Hee Lee, Ho-Kyoon Kwon, Soon-Il Ahn, Ji-Hyun Kwon, Hye-Seok Na
  • Patent number: 7561240
    Abstract: A liquid crystal display includes a first substrate with pixel electrodes, and a second substrate with a common electrode facing the first substrate. The common electrode has depression patterns corresponding to the pixel electrodes. The side wall of each depression pattern is at an angle of 30-120° with respect to the first substrate. The depression patterns of the common electrode are formed through making depression patterns at color filters. In this structure, the liquid crystal display bears wide viewing angle and good picture quality.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: July 14, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yea-Sun Yoon, Seung-Beom Park, Byoung-Sun Na
  • Publication number: 20090122213
    Abstract: A thin film transistor for driving a gate line and a liquid crystal display having the same are provided. The thin film transistor for driving a gate line includes a gate electrode, a semiconductor layer formed on the gate electrode, a drain electrode formed on the semiconductor layer, a source electrode formed on the semiconductor layer and separated from the drain electrode and being coupled to the gate line, and a ripple-prevention electrode formed on the drain electrode which overlaps at least a part of the drain electrode.
    Type: Application
    Filed: July 14, 2008
    Publication date: May 14, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gwang-Bum Ko, Ho-Kyoon Kwon, Byoung-Sun Na
  • Publication number: 20090114920
    Abstract: An LCD device includes a first substrate having a first base substrate, patterns disposed at different heights with respect to the first base substrate, and an insulation layer formed on the first base substrate and the patterns. The insulation layer has raised portions corresponding to the patterns. A side of the raised portions forms an inclination angle of no more than about 45° when a height of the raised portions is more than about 3000 angstroms, the side of the raised portions forms an inclination angle of no more than about 50° when a height of the raised portions is in a range of about 2000 angstroms to about 3000 angstroms, and the side of the raised portions forms an inclination angle of no more than about 90° when a height of the raised portions is more than about 2000 angstroms. Therefore, light leakage may be minimized.
    Type: Application
    Filed: January 9, 2009
    Publication date: May 7, 2009
    Inventor: Byoung-Sun NA
  • Patent number: 7492427
    Abstract: An LCD device includes a first substrate having a first base substrate, patterns disposed at different heights with respect to the first base substrate, and an insulation layer formed on the first base substrate and the patterns. The insulation layer has raised portions corresponding to the patterns. A side of the raised portions forms an inclination angle of no more than about 45° when a height of the raised portions is more than about 3000 angstroms, the side of the raised portions forms an inclination angle of no more than about 50° when a height of the raised portions is in a range of about 2000 angstroms to about 3000 angstroms, and the side of the raised portions forms an inclination angle of no more than about 90° when a height of the raised portions is more than about 2000 angstroms. Therefore, light leakage may be minimized.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byoung-Sun Na
  • Publication number: 20080239186
    Abstract: An LCD device includes a first substrate having a first base substrate, patterns disposed at different heights with respect to the first base substrate, and an insulation layer formed on the first base substrate and the patterns. The insulation layer has raised portions corresponding to the patterns. A side of the raised portions forms an inclination angle of no more than about 45° when a height of the raised portions is more than about 3000 angstroms, the side of the raised portions forms an inclination angle of no more than about 50° when a height of the raised portions is in a range of about 2000 angstroms to about 3000 angstroms, and the side of the raised portions forms an inclination angle of no more than about 90° when a height of the raised portions is more than about 2000 angstroms. Therefore, light leakage may be minimized.
    Type: Application
    Filed: May 21, 2008
    Publication date: October 2, 2008
    Inventor: Byoung-Sun NA
  • Publication number: 20080192198
    Abstract: Disclosed is liquid crystal display, a substrate for a liquid crystal display and a method for manufacturing the substrate. The substrate comprises a transparent electrode formed on the insulating substrate, and a black matrix formed on the transparent electrode and performing the function also of protrusions. The method comprises the steps of forming a transparent electrode on a substrate, forming a black matrix layer, depositing a photosensitive material on the black matrix layer to form a photosensitive layer, patterning the photosensitive layer, and etching the black matrix layer using the photosensitive layer as a mask.
    Type: Application
    Filed: March 6, 2008
    Publication date: August 14, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-Sun Na, Jong-Soo Yoon
  • Publication number: 20080186439
    Abstract: An LCD panel is provided for improving a contrast ratio by suppressing light leakage around gate lines of an assembly that is structured to support a liquid crystal alignment mode that enhanced side view visibility of the LCD image. The LCD panel includes a first base substrate, a plurality of gate lines and a plurality of data lines disposed on the first base substrate and crossing each other, a pixel electrode comprising a first oblique line and a second oblique line disposed on the first base substrate and inclined in a different direction from each other with respect to the gate lines, a second base substrate, a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode, wherein a portion of the common electrode overlaps the gate line segment, and a liquid crystal layer disposed between the first and second base substrates.
    Type: Application
    Filed: January 24, 2008
    Publication date: August 7, 2008
    Inventors: Ji-Hyun KWON, Hyeok-Jin Lee, Byoung-Sun Na, LuJian Gang, Dong-Hyeon Ki, Hwa-Sung Woo
  • Publication number: 20080180590
    Abstract: A liquid crystal display (LCD) panel includes: a first base substrate; a plurality of gate lines and a plurality of data lines disposed on the first base substrate and crossing each other; a pixel electrode pattern disposed on the first base substrate; a storage pattern disposed on the first base substrate, the storage pattern being positioned between consecutive gate lines and substantially in parallel with the gate lines; a second base substrate; a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode; and a liquid crystal layer disposed between the first and second base substrates.
    Type: Application
    Filed: January 29, 2008
    Publication date: July 31, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyeok-Jin Lee, Hee-Seop Kim, Byoung-Sun Na, LuJian Gang, Hwa-Sung Woo, Ji-Hyun Kwon
  • Patent number: 7388638
    Abstract: An LCD device includes a first substrate having a first base substrate, patterns disposed at different heights with respect to the first base substrate, and an insulation layer formed on the first base substrate and the patterns. The insulation layer has raised portions corresponding to the patterns. A side of the raised portions forms an inclination angle of no more than about 45° when a height of the raised portions is more than about 3000 angstroms, the side of the raised portions forms an inclination angle of no more than about 50° when a height of the raised portions is in a range of about 2000 angstroms to about 3000 angstroms, and the side of the raised portions forms an inclination angle of no more than about 90° when a height of the raised portions is more than about 2000 angstroms. Therefore, light leakage may be minimized.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: June 17, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byoung-Sun Na
  • Publication number: 20080100560
    Abstract: In a gate driving circuit and a display apparatus having the gate driving circuit, a pull-up transistor of a present stage among plural stages, which are connected one after another to each other and sequentially output a gate signal, pulls up a present gate signal output through an output terminal to a gate-on voltage. A buffer transistor is connected to a control terminal of the pull-up transistor to receive a previous output signal from a previous stage and to turn on the pull-up transistor. The buffer transistor has a chargeability that is about two times or greater than the chargeability of the pull-up transistor. Thus, the size of the pull-up transistor may be reduced, thereby preventing a malfunction of the gate driving circuit when the gate driving circuit is operated under conditions of high temperature or low temperature.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 1, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-Sun NA, Dong-Hyeon KI, Min-Cheol LEE, Soon-Il AHN
  • Publication number: 20080079886
    Abstract: A liquid crystal display includes; a first substrate, a gate line disposed on the first substrate, a pixel electrode disposed on the first substrate, a second substrate facing the first substrate, a common electrode disposed on the second substrate, a first domain partitioning member disposed on one of the first substrate and the second substrate and including a first portion disposed in a direction substantially parallel to the gate line, a second portion obliquely extending from an end of the first portion, and a third portion obliquely extending from the end of the first portion, and a second domain partitioning member disposed on one of the first substrate and the second substrate and including a fourth portion disposed in a direction substantially parallel to the gate line.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 3, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Jang-Kun SONG, Seung-Beom PARK, Byoung-Sun NA
  • Publication number: 20080068548
    Abstract: A liquid crystal display device includes a first insulating substrate, a gate line and a data line which are formed on the first insulating substrate and intersect each other insulatedly to define a pixel area. A pixel electrode is electrically coupled to the data line and includes a first stem electrode which is parallel with the data line, a plurality of first branch electrodes which are connected with the first stem electrode and substantially parallel with each other, and a first edge electrode which is located at a connecting area between the first stem electrode and the first branch electrode and extends to an area between the first branch electrodes. A second insulating substrate is provided which includes a common electrode formed on the second insulating substrate, the common electrode including a plurality of second branch electrodes which are located between the first branch electrodes. The second branch electrodes are substantially parallel with the first branch electrodes.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 20, 2008
    Inventors: Ji-hyun Kwon, Won-hee Lee, Ho-kyoon Kwon, Byoung-sun Na, Dong-hyeon Ki, Soon-il Ahn