Patents by Inventor Jang-Kun Song

Jang-Kun Song 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: 8704739
    Abstract: In a method of driving a display panel which includes a unit pixel including a first liquid crystal capacitor and a second liquid crystal capacitor, the first liquid crystal capacitor and the second liquid crystal capacitor are respectively charged with a high voltage and a low voltage which is less than the high voltage, during a first interval of a frame. The first liquid crystal capacitor and the second liquid crystal capacitor are both charged with a voltage between the high voltage and the low voltage, during a second interval of the frame after the first interval of the frame.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8698990
    Abstract: A liquid crystal display (LCD) is provided, which includes: first and second gate lines, a data line intersecting the gate lines, first to fourth drain electrodes located near the intersections between the first and second gate lines and the data line, and a coupling electrode. First to fourth pixel electrodes respectively connected to the first to fourth drain electrodes are also provided, and the first pixel electrode is connected to the coupling electrode while the fourth pixel electrode overlaps the coupling electrode. The LCD further includes a common electrode opposite the pixel electrodes, a liquid crystal layer interposed between the pixel electrodes and the common electrode, and a domain partitioning member formed on at least one of the pixel electrode and the common electrode. Two long edges of the domains are angled with respect to the first and the second gate lines or the data line substantially by about 45°.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Publication number: 20140054591
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate, and the drain electrode comprises a first portion and a second portion extending in a different direction with respect to the first portion.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD
    Inventors: Joong-Hyun MUN, Jang-Kun SONG, Yong-Woo CHOI, Bo-Sung KIM, Kwan-Wook JUNG, Jung-Ho LEE, Hyo-Rak NAM
  • Publication number: 20140016058
    Abstract: A liquid crystal display includes first and second gate lines and first and second data lines, on a first substrate, a first thin film transistor connected to the first gate and data lines and including a first source and drain electrode, a second thin film transistor connected to the second gate and data lines and including a second source and drain electrode, first and second pixel electrodes contacting a portion of the first and second drain electrodes, respectively, a passivation layer on the first and second pixel electrodes and the first and second thin film transistors, and a reference electrode on a passivation layer and overlapping the first pixel electrode and the second pixel electrode. The reference electrode includes a plurality of branch electrodes. The first thin film transistor is right of the first data line and the second thin film transistor is left of the second data line.
    Type: Application
    Filed: September 18, 2013
    Publication date: January 16, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyun-Wuk KIM, Jang-Kun SONG, Seon-Ah CHO, Eun-Je JANG, You-Sik SHIN
  • Patent number: 8605242
    Abstract: A liquid crystal display includes a signal line disposed on a substrate, a pixel electrode connected to the signal line and including a first subpixel electrode and a second subpixel electrode, a common electrode disposed opposite the pixel electrode, and a liquid crystal layer disposed between the pixel electrode and the common electrode. The liquid crystal layer is divided into domains including a first direction domain and a second direction domain in a region corresponding to the first subpixel electrode, and a third direction domain and a fourth direction domain in a region corresponding to the second subpixel electrode, and an area of the third direction domain is greater than about twice and less than about then times an area of the fourth direction domain.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Jang-Kun Song, Hyun-Wuk Kim
  • Publication number: 20130321735
    Abstract: A flat panel display having an improved picture quality is disclosed. In one embodiment, a first pixel electrode and a second pixel electrode are formed in each subpixel area. The electrodes enclose an open space (gap) such that their outer boundary has a substantially rectangular shape. The flat panel display may also include a capacitance electrode coupled to the second pixel electrode to form a coupling capacitor. In use, the coupling capacitor operates such that a magnitude of a voltage applied to the first pixel electrode is lower than an applied data voltage, and a magnitude of a voltage applied to the second pixel electrode is higher than an applied voltage. The different voltages operate such that a tilt direction of LC molecules disposed above the first pixel electrode differs from a tilt direction of LC molecules disposed above the second pixel electrode.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 5, 2013
    Inventor: JANG-KUN SONG
  • Publication number: 20130321746
    Abstract: A liquid crystal display comprises: first and second panels facing each other; a compensation film and a first polarizer disposed on the first panel, the compensation film having phase retardation characteristics; and a second polarizer having a supporting film disposed on the second panel, the supporting film having phase retardation characteristics. In alternative embodiments, a supporting film is used in place of the compensation film. The supporting film has retardation characteristics.
    Type: Application
    Filed: August 9, 2013
    Publication date: December 5, 2013
    Inventors: KYEONG-HYEON KIM, Jang-Kun Song
  • Patent number: 8599354
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: December 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20130278878
    Abstract: A liquid crystal display includes a first insulating substrate. A pixel electrode is formed on a top surface of the first insulating substrate. The pixel electrode has a first opening pattern at each pixel area. The pixel electrode is substantially rectangular in shape with first and second long sides, and first and second short sides. The pixel electrode is divided into an upper region defined by the first and second long sides and first short side, and a lower region defined by the first and second long sides and second short side. A common electrode is formed on a bottom surface of a second insulating substrate, and has a second opening pattern at each pixel area. The first and second opening patterns each have a plurality of openings, the openings of the first opening pattern and the second opening pattern being alternately arranged parallel to each other.
    Type: Application
    Filed: June 3, 2013
    Publication date: October 24, 2013
    Inventors: Jang-Kun SONG, Jae-Jin RYU
  • Patent number: 8564754
    Abstract: A liquid crystal display includes first and second gate lines and first and second data lines, on a first substrate, a first thin film transistor connected to the first gate and data lines and including a first source and drain electrode, a second thin film transistor connected to the second gate and data lines and including a second source and drain electrode, first and second pixel electrodes contacting a portion of the first and second drain electrodes, respectively, a passivation layer on the first and second pixel electrodes and the first and second thin film transistors, and a reference electrode on a passivation layer and overlapping the first pixel electrode and the second pixel electrode. The reference electrode includes a plurality of branch electrodes. The first thin film transistor is right of the first data line and the second thin film transistor is left of the second data line.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: October 22, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Wuk Kim, Jang-Kun Song, Seon-Ah Cho, Eun-Je Jang, You-Sik Shin
  • Patent number: 8525959
    Abstract: A liquid crystal display comprises: first and second panels facing each other; a compensation film and a first polarizer disposed on the first panel, the compensation film having phase retardation characteristics; and a second polarizer having a supporting film disposed on the second panel, the supporting film having phase retardation characteristics. In alternative embodiments, a supporting film is used in place of the compensation film. The supporting film has retardation characteristics.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: September 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyeong-Hyeon Kim, Jang-Kun Song
  • Patent number: 8508683
    Abstract: A flat panel display having an improved picture quality is disclosed. In on embodiment, a first pixel electrode and a second pixel electrode are formed in each subpixel area. The electrodes enclose an open space (gap) such that their outer boundary has a substantially rectangular shape. The flat panel display may also include a capacitance electrode coupled to the second pixel electrode to form a coupling capacitor. In use, the coupling capacitor operates such that a magnitude of a voltage applied to the first pixel electrode is lower than an applied data voltage, and a magnitude of a voltage applied to the second pixel electrode is higher than an applied voltage. The different voltages operate such that a tilt direction of LC molecules disposed above the first pixel electrode differs from a tilt direction of LC molecules disposed above the second pixel electrode.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8477279
    Abstract: A liquid crystal display with improved viewing angle and uncompromised transmittance is provided, along with a thin film transistor (TFT) array panel usable for such liquid crystal display. The TFT array panel includes a substrate, a plurality of gate lines formed on the substrate, a plurality of data lines formed on the substrate and intersecting the gate lines, and a plurality of thin film transistors. Each of the thin film transistors includes a gate electrode connected to one of the gate lines, a source electrode connected to one of the data lines, and a drain electrode. The TFT array panel also includes a plurality of pixel electrodes, each of the pixel electrodes connected to one of the drain electrodes and having a pair of oblique edges parallel to each other, and covering at least a portion of the drain electrodes.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 2, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8456597
    Abstract: A liquid crystal display includes a first insulating substrate. A pixel electrode is formed on a top surface of the first insulating substrate. The pixel electrode has a first opening pattern at each pixel area. The pixel electrode is substantially rectangular in shape with first second long sides, and first and second short sides. The pixel electrode is divided into an upper region defined by the first and second long sides and first short side, and a lower region defined by the first and second long sides and second short side. A common electrode is formed on a bottom surface of a second insulating substrate, and has a second opening pattern at each pixel area. The first and second opening patterns each have a plurality of openings, the openings of the first opening pattern and the second opening pattern being alternately arranged parallel to each other.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: June 4, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang-Kun Song, Jae-Jin Ryu
  • Patent number: 8451393
    Abstract: A liquid crystal display includes: a plurality of signal lines disposed on a substrate, a pixel electrode connected to the plurality of signal lines and including a first subpixel electrode and a second subpixel electrode, a common electrode facing the pixel electrode, a liquid crystal layer disposed between the pixel electrode and the common electrode and a step-up capacitor connected between an output terminal of a switching element connected to the second subpixel electrode and the first subpixel electrode. The step-up capacitor is formed by overlapping a first conductor connected to the output terminal of the switching element and a second conductor connected to the first subpixel electrode via an insulating layer, and the second conductor has a cutout at an edge opposite the output terminal of the switching element.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Jang-Kun Song, Hyun-Wuk Kim, Eun-Je Jang, You-Sik Shin
  • Patent number: 8436845
    Abstract: In a method of driving a display panel which includes a unit pixel including a first liquid crystal capacitor and a second liquid crystal capacitor, the first liquid crystal capacitor and the second liquid crystal capacitor are respectively charged with a high voltage and a low voltage which is less than the high voltage, during a first interval of a frame. The first liquid crystal capacitor and the second liquid crystal capacitor are both charged with a voltage between the high voltage and the low voltage, during a second interval of the frame after the first interval of the frame.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: May 7, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8400606
    Abstract: In an LCD apparatus and a method of manufacturing the same, a first substrate on which a pixel electrode is formed includes a color filter formed at a pixel area thereof. A color filter spacer is formed at a position between the pixel area and an adjacent pixel area while the color filter is formed. A second substrate on which the common electrode is formed includes a light blocking pattern formed at the position between the pixel area and adjacent pixel area so as to block light incident through between the pixel area and adjacent pixel area, and a light visual angle pattern formed at the position corresponding to the pixel area so as to widen a visual angle of light incident into the pixel area. Thus, the LCD apparatus may be manufactured through simplified and reduced processes and improve display quality of an image.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8400598
    Abstract: A tetragonal ring shape aperture is formed in the common electrode on one substrate and a cross shape aperture is formed at the position corresponding to the center of the tetragonal ring shape aperture in the pixel electrode on the other substrate. A liquid crystal layer between two electrodes are divided to four domains where the directors of the liquid crystal layer have different angles when a voltage is applied to the electrodes. The directors in adjacent domains make a right angle. The tetragonal ring shape aperture is broken at midpoint of each side of the tetragon, and the width of the aperture decreases as goes from the bent point to the edge. Wide viewing angle is obtained by four domains where the directors of the liquid crystal layer indicate different directions, disclination is removed and luminance increases.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Kye-Hun Lee, Hea-Ri Lee
  • Patent number: 8395737
    Abstract: An array substrate includes a lower substrate, a switching element and a pixel electrode. In the lower substrate, unit pixel areas are each divided into a plurality of domains. The switching element is disposed on the lower substrate and transmits a pixel signal. The pixel electrode is disposed on the unit pixel area and is electrically connected to the switching element. The pixel electrode includes a plurality of slit portions disposed thereon. A portion of the slit portions is longitudinally extended in a zigzag shape along different directions in correspondence with the domains.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su-Jeong Kim, Jang-Kun Song, Sung-Hwan Hong, Kee-Bum Park, Seon-Ah Cho, Hye-Ran You, Su-Han Woo, Jae-Jin Lyu, Eun Cho
  • Publication number: 20130021547
    Abstract: A liquid crystal display includes a first insulating substrate, and a second insulating substrate facing the first insulating substrate. A protective layer is formed on the data lines, and pixel electrodes are formed on the protective layer such that the pixel electrodes are connected to the drain electrodes while having a plurality of slits and horizontal opening portions. A common electrode is formed on the second insulating substrate with a plurality of opening portions. The horizontal opening portions of the pixel electrode and the opening portions of the common electrode partition the pixel region into left and right domains as well as upper and lower domains. The slits are positioned at the left and right domains.
    Type: Application
    Filed: August 6, 2012
    Publication date: January 24, 2013
    Inventor: Jang-Kun SONG