Patents by Inventor Yong Min Ha

Yong Min Ha 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: 7342566
    Abstract: A liquid crystal display (LCD) device includes a control chip arranged on a print circuit board (PCB); a sampling switch array arranged on an LCD panel for applying video signals from the control chip to data lines of the LCD panel; and a switch controller for controlling the sampling switch array in accordance with control signals and the video signal applied from the control chip.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: March 11, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Min Ha, Soon Kwang Hong, Han Wook Hwang
  • Patent number: 7315293
    Abstract: An organic light-emitting diode display (OELD) device is presented that reduces the number of outputs of a data driver. The OELD device includes data and scan lines which cross each other. Pixel cells that contain organic electro-luminescence diodes are arranged in a matrix in pixel areas between the data lines and the scan lines. The pixel cells are arranged in different colors in a vertical direction and in the same color in a horizontal direction. A data driver supplies data to the data lines. A scan driver supplies a scan signal to the scan lines.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: January 1, 2008
    Assignee: LG. Philips LCD Co. Ltd.
    Inventors: Yong Min Ha, Jae Ho Sim
  • Patent number: 7220994
    Abstract: A method for fabricating an in-plane switching LCD device includes forming a data line and a light-shielding layer on a substrate, forming a pixel electrode line and an active region with a polycrystalline silicon thin film, forming a first insulating layer on the substrate, forming a gate electrode and a common electrode line on the first insulating layer, forming a second insulating layer on the substrate, forming a first contact hole that exposes at least portions of the data line and the active region, and forming a connection electrode that connects at least portions of the exposed data line and the active region.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: May 22, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Hun Jeoung
  • Patent number: 7187375
    Abstract: An apparatus for generating gamma voltage includes a plurality of gamma set generators and a gamma set selector. The gamma set generators generate a plurality of gamma voltage sets that include gamma voltages having different voltage levels from each other such that each gamma voltage set corresponds with a brightness mode. The gamma set selector selects any one of the gamma voltage sets in response to the brightness mode and drives data lines of a display device in accordance with the selected gamma voltage set.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: March 6, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Min Ha, Seok Hee Jeong, Hoon Ju Chung, Dai Yun Lee, Han Sang Lee
  • Patent number: 7154568
    Abstract: The present invention relates to a static electricity prevention type liquid crystal display panel for preventing static electricity flowing in through a pad part. A static electricity prevention type liquid crystal display panel according to an embodiment of the present invention includes a picture display part having a plurality of liquid crystal cells; a signal pad part applying a drive signal to be inputted to signal lines of the picture display part, and wherein the signal pad part includes a plurality of pads connected to the signal lines; and a static electricity prevention circuit having a thin film transistor with a floating gate for connecting the pad with a shorting bar by a static electricity flowing into the pad for the pad to form an equipotential with respect to the static electricity.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: December 26, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Han Wook Hwang
  • Patent number: 7148629
    Abstract: An aging circuit for an organic electro luminescence device includes a plurality of pixels arranged in a matrix at intersection areas of row lines and column lines and an aging circuit having at least one aging AC voltage source to apply a specific aging AC voltage pulse to the pixels.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: December 12, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Min Ha, Chang Yeon Kim, Sang Soo Han
  • Publication number: 20060273315
    Abstract: An LCD device, and a fabrication method thereof, having a high aperture ratio and a high optical transmittance that enhances a fabrication yield and reduces the number of masks required in a fabrication process are disclosed. The LCD device includes a first substrate and a second substrate; a gate line arranged on the first substrate in one direction and having a transparent conductive layer formed of a transparent conductive material at a lower portion thereof; a data line; a thin film transistor; a first electrode formed on the first substrate and formed on the same layer as the transparent conductive layer; a second electrode having a plurality of slits and formed on a different layer from the first electrode, wherein the second electrode generates a horizontal field with a parabolic shape on the first substrate with the first electrode; and a liquid crystal layer.
    Type: Application
    Filed: May 19, 2006
    Publication date: December 7, 2006
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Yong-Min Ha, Han-Wook Hwang
  • Patent number: 7133011
    Abstract: A data driving circuit of an LCD device includes a timing controller for formatting input data so that data and gate drivers of an LCD panel display a picture image, and outputting a selection signal; a plurality of digital to analog converters for converting digital signals output from the timing controller to analog signals based on a color gray level displayed; and a plurality of amplifiers for amplifying the signals output from the respective digital to analog converters and outputting the amplified signals to the LCD panel.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: November 7, 2006
    Assignee: LG. Philips LCD Co., Ltd
    Inventor: Yong Min Ha
  • Patent number: 7057675
    Abstract: An array substrate of a liquid crystal display device includes a substrate, a plurality of gate lines disposed on the substrate, a plurality of data lines disposed perpendicular to the gate lines, a plurality of storage capacitors each having at least a first electrode disposed parallel to a corresponding gate line, a plurality of switching devices each electrically connected with the corresponding gate line and a corresponding data line, and a plurality of pixel electrodes each overlapping a portion of an nth storage capacitor and a portion of a (n?1)th storage capacitor.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: June 6, 2006
    Assignee: LG.Phillips LCD Co., Ltd.
    Inventor: Yong-Min Ha
  • Patent number: 7050036
    Abstract: A shift register employs only a thin film transistor of the same type channel and has a level shifter built-in. A shift register with a built in level shifter includes a plurality of stages and a plurality of level shifters. The stages are connected in cascade to shift a start pulse inputted through an input terminal and sequentially output the shifted pulse. The level shifters level-shift a voltage level of the shifted pulse applied from each of the stages and outputting it.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: May 23, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Jae Deok Park, Yong Min Ha
  • Patent number: 7030842
    Abstract: An electro-luminescence display device includes a supply voltage source; a data driver for driving a plurality of data lines arranged within a panel; a gamma voltage generator for generating gamma voltages to generate analog data voltages corresponding to externally inputted data signals provided to the data driver; and a threshold voltage compensator installed between the gamma voltage generator and the supply voltage source for controlling a supply voltage of the supply voltage source and to apply the controlled voltage to the gamma voltage generator.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: April 18, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Min Ha, Hoon Ju Chung, Han Sang Lee, Myung Ho Lee, Seok Hee Jeong
  • Publication number: 20060043366
    Abstract: Disclosed are a driving circuit and driving method for an organic light emitting diode (OLED) device. The driving circuit for the OLED device comprises RGB pixels each including: a gate line arranged in a first direction and a data line and a power supply line arranged in a second direction crossing the first direction; a plurality of switching transistors connected to the region where the gate line and the data line intersect; a capacitor connected to the switching transistors and the power supply line; a driving transistor connected to the capacitor and the power supply line; an OLED connected to the driving thin film transistor; a variable voltage signal connected to one of the plurality of switching transistors; and a driving signal connected to at least one of the switching transistors, wherein the variable voltage signal is independently connected to the RGB pixels, and the transistors are thin film transistors.
    Type: Application
    Filed: June 30, 2005
    Publication date: March 2, 2006
    Inventors: Yong-Min Ha, Jae-Ho Sim
  • Patent number: 7002651
    Abstract: A transflective type liquid crystal display (LCD) device and method for manufacturing the same is disclosed, in which it is possible to decrease manufacturing cost and improve yield by decreasing the number of masks. The transflective type LCD device includes a substrate having reflection and transmission regions, a first insulating layer on an entire surface of the substrate whereon gate and storage electrodes are formed at predetermined portions, a transparent electrode overlapped with the storage electrode and formed over the transmission region of the first insulating layer, and a second insulating layer formed over the reflection region of the substrate and having a contact hole for exposing a predetermined portion of the transparent electrode.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: February 21, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yong Min Ha, Han Wook Hwang
  • Patent number: 6998283
    Abstract: A method for fabricating an in-plane switching LCD device includes forming a data line and a light-shielding layer on a substrate, forming a pixel electrode line and an active region with a polycrystalline silicon thin film, forming a first insulating layer on the substrate, forming a gate electrode and a common electrode line on the first insulating layer, forming a second insulating layer on the substrate, forming a first contact hole that exposes at least portions of the data line and the active region, and forming a connection electrode that connects at least portions of the exposed data line and the active region.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: February 14, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Hun Jeoung
  • Patent number: 6982771
    Abstract: A liquid crystal display and a method for fabricating the same include a first substrate having an active layer with source/drain regions formed therein, a gate line and a data line extending in directions perpendicular to each other formed thereon, a dummy gate insulating film and a dummy gate electrode both formed on the first substrate in fixed patterns isolated from the gate line, an interlayer insulating film on the first substrate inclusive of the dummy gate electrode with a step, a drain electrode formed on the interlayer insulating film to overlap on upper regions of the dummy gate electrode so as to be in contact with the drain region and have a step to the data line, the data line formed on the interlayer insulating having a step to the drain electrode, a passivation film formed on the interlayer insulating film inclusive of the dummy gate electrode and the data line, a contact hole formed to expose the drain electrode overlapped with the dummy gate electrode, and a pixel electrode overlapping upper
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: January 3, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ju Cheon Yeo, Yong Min Ha, Jae Deok Park
  • Publication number: 20050212447
    Abstract: An organic electroluminescent display device includes: a substrate having a pixel region and a non-pixel region surrounding the pixel region; a first electrode on the substrate in the pixel region; an organic luminescent layer on the first electrode; a second electrode on the organic luminescent layer; and a light-shielding means corresponding to the non-pixel region.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 29, 2005
    Inventors: Du-Hwan Oh, Hoon-Ju Chung, Byeong-Koo Kim, Yong-Min Ha
  • Patent number: 6930732
    Abstract: An array substrate for use in a liquid crystal display device is fabricated by the steps of forming a buffer layer on a substrate; forming a polycrystalline-silicon active layer on the buffer layer, the said active layer having an island shape; forming a gate insulation layer on the buffer layer to cover the polycrystalline-silicon active layer; forming a first metal layer on the gate insulation layer; forming a second metal layer on the first metal layer; patterning the first and second metal layer to form a gate electrode, a gate line and a gate shorting bar; forming a source contact area and a drain contact area at both sides of the polycrystalline-silicon active layer; forming an interlayer insulator on the gate insulation layer to cover the patterned first and second metal layers; patterning the interlayer insulator and the gate insulation layer so as to form a first contact hole to the source contact area and the second contact hole to a drain contact area, patterning a portion of the interlayer insulat
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: August 16, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sang-Hun Oh, Yong-Min Ha, Jae-Deok Park
  • Patent number: 6924784
    Abstract: A data line driving method for a liquid crystal display device that does not require a separate pre-charge circuit and is capable of reducing pre-charge time operates by charging data lines to a desired level in response to a control signal for sampling the data lines. In one aspect, such a data line driving method includes the steps of generating a control signal; mutually short-circuiting the data lines in response to the control signal; pre-charging data lines to a desired level; mutually open-circuiting the data lines in response to the control signal; and sequentially applying video signals to the data lines in response to the control signal. A liquid crystal display device operable according to such a method includes data driving means for generating a pre-charging signal having a desired level; means for generating a control signal; and switching means for commonly applying the pre-charging signal to the data lines in response to the control signal, to pre-charge the data lines.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: August 2, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ju Cheon Yeo, Yong Min Ha
  • Patent number: 6924179
    Abstract: An array substrate for use in a liquid crystal display device is fabricated by the steps of forming a buffer layer on a substrate; forming a polycrystalline-silicon active layer on the buffer layer, the said active layer having an island shape; forming a gate insulation layer on the buffer layer to cover the polycrystalline-silicon active layer; forming a first metal layer on the gate insulation layer; forming a second metal layer on the first metal layer; patterning the first and second metal layer to form a gate electrode, a gate line and a gate shorting bar; forming a source contact area and a drain contact area at both sides of the polycrystalline-silicon active layer; forming an interlayer insulator on the gate insulation layer to cover the patterned first and second metal layers; patterning the interlayer insulator and the gate insulation layer so as to form a first contact hole to the source contact area and the second contact hole to a drain contact area, patterning a portion of the interlayer insulat
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: August 2, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sang-Hun Oh, Yong-Min Ha, Jae-Deok Park
  • Patent number: 6847344
    Abstract: A liquid crystal display (LCD) device having a first substrate and a second substrate with liquid crystal sealed therebetween, includes a plurality of gate lines and data lines crossing each other on the first substrate; a gate driving section for driving the gate lines; a source driving section for precharging the data lines for a first time and supplying video signals to the data lines; and a precharge circuit section for precharging the data lines for a second time.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: January 25, 2005
    Assignee: LG Philips LCD Co., Ltd.
    Inventor: Yong Min Ha