Patents by Inventor Ji-Hyun Kwon

Ji-Hyun Kwon 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: 7887890
    Abstract: Provided is a method of manufacturing a plastic substrate with lower auto-fluorescence and better specificity. The method includes: (a) preparing a plastic substrate having an Atomic Force Microscopic (AFM) surface roughness of Ra<3 nm or Rq<4 nm under the condition of 50 ?m×50 ?m or less; (b) treating the plastic substrate with plasma; and (c) treating the plastic substrate with a surface-modifying monomer. A plastic substrate manufactured by the method is also provided. The plastic substrate exhibits a remarkably low auto-fluorescence and thus better specificity for detection of target biomolecules, which enables the broad application of a plastic substrate, which can be easily designed to include a microfluidic structure relative to a glass substrate but has been limitedly used due to high auto-fluorescence, to microarrays, biochips, or well plates.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: February 15, 2011
    Assignees: LG Chem, Ltd., LG Life Sciences, Ltd.
    Inventors: Gihune Jung, Jinseok Kang, Hee Ju Kim, Ji Hyun Kwon, Young Mee Lee, Young Soo Seo, In Soo Kim
  • Patent number: 7821003
    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: Grant
    Filed: February 26, 2009
    Date of Patent: October 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hye-Seok Na, Won-Hee Lee, Ho-Kyoon Kwon, Byoung-Sun Na, Soon-Il Ahn, Ji-Hyun Kwon
  • Publication number: 20100220253
    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: May 11, 2010
    Publication date: September 2, 2010
    Inventors: Hyeok-Jin LEE, Hee-Seop KIM, Byoung-Sun NA, LuJian GANG, Hwa-Sung WOO, Ji-Hyun KWON
  • Publication number: 20100208157
    Abstract: A liquid crystal display (LCD), according to an exemplary embodiment of the present invention, includes a plurality of pixels arranged in a matrix shape. Each of the pixels include a first subpixel and a second subpixel. The pixels include a first thin film transistor transmitting a first data voltage to the first subpixel. The first thin film transistor includes a first source electrode, a first drain electrode, and a first gate electrode. The pixels include a second thin film transistor transmitting a second data voltage to the second subpixel. The second thin film transistor includes a second source electrode, a second drain electrode, and a second gate electrode. A relative position of the first drain electrode with respect to the first source electrode is opposite to a relative position of the second drain electrode with respect to the second source electrode in each pixel.
    Type: Application
    Filed: July 22, 2009
    Publication date: August 19, 2010
    Inventors: Ji-Hyun KWON, Hey-Seok NA, Won-Hee LEE, Ho-Kyoon KWON, Byoung-Sun NA, Dong-Yoon LEE, Ju-Hee LEE, Gwang-Bum KO
  • Publication number: 20100201668
    Abstract: Gate drive circuit includes a plurality of stages connected one after another to each other. An m-th stage includes a pull-up section outputting a first clock signal as a gate signal of the m-th stage to an output terminal, a pull-down section applying a low voltage to the output terminal, a carry section outputting the first clock signal as a carry signal of the m-th stage in response to the high voltage of the first node signal, a first carry holding section maintaining the carry signal of the m-th stage at the low voltage in response to the high voltage of the first clock signal and a second carry holding section maintaining the carry signal of the m-th stage at the low voltage in response to a high voltage of the second clock signal.
    Type: Application
    Filed: July 31, 2009
    Publication date: August 12, 2010
    Inventors: Gwang-Bum Ko, Won-Hee Lee, Ho-Kyoon Kwon, Byoung-Sun Na, Ju-Hee Lee, Ji-Hyun Kwon
  • Patent number: 7742117
    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: Grant
    Filed: January 29, 2008
    Date of Patent: June 22, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeok-Jin Lee, Hee-Seop Kim, Byoung-Sun Na, LuJian Gang, Hwa-Sung Woo, Ji-Hyun Kwon
  • Publication number: 20100013823
    Abstract: In the display apparatus, a gate driver receives at least one clock to sequentially provide gate lines in a display panel with a gate signal in a high state corresponding to a high interval of the clock. The gate driver includes a plurality of amorphous silicon transistors and is formed in the display panel through a thin film process. The clock has a delay time of about 2.0 ?s or less. If the delay time of the clock is reduced less than about 2.0 ?s, a threshold voltage margin of the transistors increases, so that the gate driver may not malfunction in a high temperature aging process. As a result, the gate driver may be prevented from malfunctioning in the high temperature aging process.
    Type: Application
    Filed: January 9, 2009
    Publication date: January 21, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Hyun KWON, Ho-Kyoon KWON, Dong-Hyon KI, Won-Hee LEE
  • 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: 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
  • 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
  • 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
  • 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
  • Publication number: 20080049160
    Abstract: A liquid crystal display according to an embodiment of the invention includes a substrate, a plurality of gate lines formed on the substrate, a plurality of data lines formed on the substrate to intersect the gate lines, and a plurality of pixel electrodes formed on the substrate. In the liquid crystal display, the pixel electrode includes a first main side substantially parallel with the gate line, a second main side substantially parallel with the data line, a first oblique side making a first oblique angle with respect to the first and second main sides, and a second oblique side making a second oblique angle with respect to the first and second main sides. The first oblique angle and the second oblique angle are different from each other.
    Type: Application
    Filed: July 25, 2007
    Publication date: February 28, 2008
    Inventors: Ji-Hyun Kwon, Byoung-Sun Na, Dong-Hyeon Ki, Soon-Il Ahn