Patents by Inventor Yun-hee Kwak

Yun-hee Kwak 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: 20080001892
    Abstract: In a display substrate and a display device having the display substrate for reducing a line resistance, the display substrate includes a plurality of pixel parts, a signal line part and a signal pad part. The pixel parts are formed in a display area. The signal line part is formed in a peripheral area surrounding the display area. The signal line part includes a first line formed with a first conductive layer, and a second line formed with a second conductive layer over the first line. The second line overlaps the first line. The signal pad part includes a first pad integrally formed with the first line, and a second pad integrally formed with the second line, wherein an identical driving signal is applied to the first pad and the second pad. Accordingly, the line resistance of the signal line part may be reduced.
    Type: Application
    Filed: May 18, 2007
    Publication date: January 3, 2008
    Inventors: Dong-Gyu Kim, Jong-Woong Chang, Yun-Hee Kwak
  • Publication number: 20070296659
    Abstract: A display substrate includes source lines, gate lines, an output pad part, a fan-out part and a first voltage line part. The source lines are in a display area. The gate lines cross the source lines. The output pad part is in a peripheral area surrounding the display area and is electrically connected to output terminals of a driving chip. The fan-out part is electrically connected between the output pad part and the source lines. The first voltage line part is inclined with respect to a central line of a chip area in which the driving chip is mounted toward opposite sides of the chip area to cross the fan-out part. Therefore, the line reactance of the fan-out part is decreased and the uniformity of the line resistance of the fan-out part is increased to improve image display quality.
    Type: Application
    Filed: April 11, 2007
    Publication date: December 27, 2007
    Inventors: Yun-Hee Kwak, Seung-Hwan Moon, Jong-Woong Chang
  • Publication number: 20070291042
    Abstract: A display substrate includes an output pads section, a fan-out section, a first power wiring section and a first conductive pattern. The output pads section is electrically connected to a plurality of output terminals of a first driver chip. The fan-out section electrically connects the output pads section to a plurality of source wirings. The first power wiring section is extended along a longitudinal direction of a plurality of gate wirings that cross with source wirings of the display substrate. The first power wiring section propagates at least first and second power-delivering voltages to the driver chip. The first conductive pattern is insulatively overlapped with the first power wiring section in an intermediate area between the output pads sections of an adjacent second driver chip. The first conductive pattern thereby defines a capacitive shunting path for voltage transients or ripples.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 20, 2007
    Inventors: Yun-Hee KWAK, Jong-Woong Chang, Seung-Hwan Moon
  • Publication number: 20070007557
    Abstract: A gate driver circuit includes a driving section and a wiring section. The wiring section receives a plurality of signals from an external device. The driving section includes a plurality of stages providing a plurality of gate lines with a gate signal. The wiring section includes first and second signal wirings. The first signal wiring is disposed adjacent to a first side of the driving section, where the first side receives the signals from the wiring section. The second signal wiring is disposed adjacent to a portion that is disposed at an outer side of the driving section and the first signal wiring. Therefore, a signal applied to the first signal wiring is prevented from being delayed by the second signal wiring. Furthermore, a distortion of signal applied to the gate driver and a maloperation of the gate driver are prevented.
    Type: Application
    Filed: November 23, 2005
    Publication date: January 11, 2007
    Inventors: Yun-Hee Kwak, Jong-Woong Chang, Seong-Young Lee
  • Publication number: 20060177770
    Abstract: The present invention relates to a thin film transistor (TFT) substrate and method of making such a TFT substrate. The structure of the TFT substrate helps prevent damage to signal lines in non-display areas.
    Type: Application
    Filed: December 15, 2005
    Publication date: August 10, 2006
    Inventors: Jeong-il Kim, Dong-hyeon Ki, Yun-hee Kwak, Hyeong-jun Park, Byeong-jae Ahn, Shin-tack Kang
  • Publication number: 20060056267
    Abstract: In a driving unit (e.g., a gate driving unit) and a flat panel display apparatus having the driving unit, a circuit portion of the driving unit includes a plurality of driving stages cascade-connected to one another and outputs a (gate) driver signal (a plurality of gate-driving signals) based on a plurality of control signals. The line portion comprises a first signal line and a second signal line, each of which transmits control signals from the outside, and a first connection line connecting the first signal line to the driving stages, and a second connection line connecting the second signal line to the driving stages. The second signal line is positioned at a different (metallization) layer from the first signal line and the first and second connection lines. Therefore, malfunctioning of the driving unit caused by corrosion may be prevented.
    Type: Application
    Filed: September 12, 2005
    Publication date: March 16, 2006
    Inventors: Sung-Man Kim, Seong-Young Lee, Yeon-Kyu Moon, Yun-Hee Kwak, Jong-Woong Chang