Patents by Inventor Jong-woong Chang

Jong-woong Chang 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: 8258556
    Abstract: A thin film transistor is provided, which includes: a gate electrode (124); a gate insulating layer (140) formed on the gate electrode; a semiconductor layer (154) formed on the gate insulating layer and disposed opposite the gate electrode; a source electrode (173) and a drain electrode (175) that are formed at least in part on the semiconductor layer and face each other, a passivation layer (180) formed on the source electrode, the drain electrode, and a portion of the semiconductor layer that is not covered with the source electrode and the drain electrode; and a shielding electrode (196) formed on the passivation layer and disposed on a region between the source electrode and the drain electrode.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Young Lee, Jong-Woong Chang
  • Patent number: 8259047
    Abstract: A liquid crystal display device for improving picture quality includes a common electrode formed on a first substrate, gate lines and data lines formed on a second substrate bonded to the first substrate by a sealing member with liquid crystals disposed therebetween, thin film transistors connected to the gate lines and to the data lines, pixel electrodes formed in subpixel regions, each pixel electrode having a long side in a direction of the gate lines and having a short side in a direction of the data lines fanout lines for supplying a driving signals from the driving chips to the data lines, first conductive spacers formed between the fanout lines connected to different driving chips, for supplying a common voltage to the common electrode, and second conductive spacers formed between the fanout lines connected to the same driving chip, for supplying the common voltage to the common electrode.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Dong Gyu Kim, Jong Woong Chang
  • Patent number: 8233125
    Abstract: A liquid crystal display having electrodes on a single substrate. A transparent planar electrode elongated in the transverse direction is formed on the inner surface of a substrate, and an insulating film is deposited thereon. A plurality of linear electrodes, which are elongated in the longitudinal direction and either transparent or opaque, are formed on the insulating film. Potential difference between the planar and the linear electrodes generated by applying voltages to the electrodes yields an electric field. The electric field is symmetrical with respect to the longitudinal central line of the linear electrodes, and has parabolic or semi-elliptical lines of force having a center on a boundary line between the planar and the linear electrodes. The line of force on the planar and the linear electrodes and on the boundary line between the planar and the linear electrodes has the vertical and the horizontal components, and the liquid crystal molecules are re-arranged to have a twist angle and a tilt angle.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: July 31, 2012
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Jin-Tae Yuh, Kye-Hun Lee, Byoung-Sun Na, Dong-Gyu Kim, Jong-Woong Chang, Jung-Uk Shim, Jang-Kun Song, Hyun-Sik Lee
  • Patent number: 8223108
    Abstract: In an array substrate and a display apparatus having the array substrate, a pixel part includes gate lines, data lines and pixels electrically connected to the gate and data lines. A gate driving circuit is electrically connected to a first end of the gate lines and applies a gate signal to the gate lines. A first inspecting circuit is electrically connected to odd-numbered gate lines of the gate lines and inspects odd-numbered pixels connected to the odd-numbered gate lines. A second inspecting circuit is electrically connected to even-numbered gate lines of the gate lines and inspects even-numbered pixels connected to the even-numbered gate lines. Thus, electrical defects between the pixels may be easily detected, thereby improving the inspectability for the defects of the array substrate.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong-Woong Chang
  • Patent number: 8217924
    Abstract: A display apparatus includes a display panel including gate and data lines disposed thereon, and a plurality of driver integrated circuits (“ICs”) on the display panel and electrically connected to data lines. Flexible printed circuit boards (“FPCBs”) are disposed on the display panel and a printed circuit board to apply the control signal and the image signal from the printed circuit board to the driver ICs. There are less FPCBs than driver ICs. The driver ICs are divided into first and second driver groups; the data lines are divided into first and second groups of data lines. Driver ICs of the first driver group are directly connected to corresponding FPCBs, and driver ICs of the second driver group are connected to adjacent driver ICs. Each driver integrated circuit of the first driver group outputs a first repair signal to repair a data line of the first group of data lines.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: July 10, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-Hee Kwak, Jong-Woong Chang, Bo-Ra Kim, Jeong-Il Kim
  • Publication number: 20120147283
    Abstract: A liquid crystal display capable of operating with little parasitic capacitance variation is presented. The display includes a substrate, a gate line disposed on the substrate, a storage electrode line disposed on the substrate and having a main portion that extends parallel with the gate line, a data line crossing the gate line and the storage electrode line and including a source electrode, a drain electrode facing the source electrode; and a pixel electrode connected to the drain electrode, wherein the storage electrode line includes a plurality of storage electrodes extending from the main portion in the same direction as the data line, and the storage electrodes overlap different regions of the data line.
    Type: Application
    Filed: October 17, 2011
    Publication date: June 14, 2012
    Inventor: Jong-Woong CHANG
  • Patent number: 8183601
    Abstract: A plurality of gate lines formed on an insulating substrate, each gate line including a pad for connection to an external device; a plurality of data lines intersecting the gate lines and insulated from the gate lines, each data line including a pad for connection to an external device; and a conductor overlapping at least one of the gate lines and the data lines are included. An overlapping distance of the gate lines or the data lines and a width of the conductor decreases as the length of the gate lines or the data lines increases. Accordingly, the difference in the RC delays due to the difference of the length of the signal lines is compensated to be reduced.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong-Woong Chang
  • Publication number: 20120099036
    Abstract: Provided are a display substrate and a method of fabricating the same. The display substrate includes: a substrate including a display area and a first non-display area and a second non-display area which are located around the display area; first signal transmission portions located in the first non-display area; second signal transmission portions located in the second non-display area; and a seal line including a first seal line pattern disposed on the first signal transmission portions and a second seal line pattern disposed on the second signal transmission portions, wherein each of the first signal transmission portions includes a gate wiring and a step compensation portion which is disposed on the gate wiring and under the first seal line pattern, and the first seal line pattern overlaps the step compensation portion.
    Type: Application
    Filed: August 25, 2011
    Publication date: April 26, 2012
    Inventor: Jong-Woong CHANG
  • Publication number: 20120081274
    Abstract: The present invention relates to a thin film transistor array panel, a liquid crystal display, and a method capable of reducing an effect on neighboring pixels in a process of repairing a pixel defect. The thin film transistor array panel may include: a thin film transistor connected to a gate line and a data line to define a pixel area; a pixel electrode formed in the pixel area and connected to the thin film transistor; and a storage electrode including a first portion overlapping the data line between two adjacent gate lines. The storage electrode may also include a second portion connected to the first portion and enclosing an edge of the pixel area except for a region where the first portion is formed. The storage electrode may be branched between pixel electrodes respectively formed in two adjacent pixel areas.
    Type: Application
    Filed: January 28, 2011
    Publication date: April 5, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-Woong CHANG, Ho-Kyoon KWON, Shin-Tack KANG
  • Patent number: 8138792
    Abstract: A gate drive circuit includes a shift register, a clock wiring and a start wiring. The shift register includes a plurality of stages arranged in a first direction on a base substrate to output a plurality of gate signals. The clock wiring is extended along the first direction. The clock wiring is electrically connected to a plurality of clock connecting wirings extended in a second direction crossing the first direction to deliver a clock signal to the stages. The start wiring includes the first wiring extended along the first direction and a second wiring connected to the first wiring and extended in the first direction to cross with the clock connecting wirings so as to deliver a vertical start signal to a first stage. Therefore, a structure of a signal wiring delivering a vertical start signal is changed, thereby protecting the gate drive circuit from static electricity.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: March 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Woong Chang, Kweon-Sam Hong
  • Patent number: 8130209
    Abstract: A liquid crystal display (“LCD”) panel includes a touch spacer formed in a first substrate, a common electrode formed to cover the touch spacer, a first touch conductive line formed in a first direction in a second substrate opposite to the first substrate, a second touch conductive line formed in a second direction substantially perpendicular to the first touch conductive line, and first and second contact electrodes respectively electrically connected to the first and second touch conductive lines and portions of the first and second contact electrodes formed at a same height, wherein the portions of the first and second contact electrodes contact the common electrode by the touch spacer in a contact position. A method for manufacturing the LCD panel is also provided.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: March 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong-Woong Chang
  • Patent number: 8111342
    Abstract: A display substrate that has increased aperture ratio is presented. The display substrate includes a base substrate, a first metal pattern formed on the base substrate and a gate wiring and a gate electrode. A first insulating layer is formed on the base substrate covering the first metal pattern. A second metal pattern is formed on the first insulating layer including a data wiring crossing the gate wiring, a source electrode connected to the data wiring and a drain electrode separated from the source electrode. A second insulating layer is formed on the base substrate covering the second metal pattern. A transparent electrode is formed on the second insulating layer. An organic layer is formed on the transparent electrode, and a pixel electrode is formed on the organic layer being insulated with the transparent electrode, and contacted to the drain electrode. The organic layer may comprise red, green and blue color filters.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: February 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shin-Tack Kang, Jong-Huan Lee, Hong-Woo Lee, Hyeon-Hwan Kim, Byeong-Jae Ahn, Gyu-Tae Kim, Jong-Woong Chang, Jong-Hyuk Lee
  • Publication number: 20110317107
    Abstract: A liquid crystal display device and a method of repairing bad pixels thereof, in which the bad pixels can be efficiently and easily repaired, includes a first insulating substrate, a gate wiring and a storage wiring arranged substantially parallel to each other in a first direction on the first insulating substrate, a data wiring intersecting the gate and storage wirings in an insulated manner and arranged substantially in a second direction, and a pixel electrode formed on a pixel area defined by the gate and data wirings. The storage wiring includes a horizontal portion arranged substantially in the first direction and at least a part of which does not overlap the pixel electrode, and a vertical portion branching off substantially in the second direction from the horizontal portion and overlapping the data wiring.
    Type: Application
    Filed: September 1, 2011
    Publication date: December 29, 2011
    Inventors: Jong-woong CHANG, Shin-tack Kang
  • Patent number: 8068077
    Abstract: A thin film transistor array panel is provided, which includes: a display cell array circuit including a plurality of gate lines, a plurality of data lines, a plurality of thin film transistors, and a plurality of pixel electrodes; a gate driving circuit supplying gate signals to the gate lines; and a signal line connected to the gate driving circuit and including first and second line segments separated from each other and a connection member connected to the first and second line segments through at least a contact hole exposing at least one of the first and the second line segments.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: November 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Jae Park, Hyang-Shik Kong, Myung-Koo Hur, Jong-Woong Chang, Seong-Young Lee, Dong-Gyu Kim
  • Publication number: 20110279758
    Abstract: A liquid crystal display having electrodes on a single substrate. A transparent planar electrode elongated in the transverse direction is formed on the inner surface of a substrate, and an insulating film is deposited thereon. A plurality of linear electrodes, which are elongated in the longitudinal direction and either transparent or opaque, are formed on the insulating film. Potential difference between the planar and the linear electrodes generated by applying voltages to the electrodes yields an electric field. The electric field is symmetrical with respect to the longitudinal central line of the linear electrodes, and has parabolic or semi-elliptical lines of force having a center on a boundary line between the planar and the linear electrodes. The line of force on the planar and the linear electrodes and on the boundary line between the planar and the linear electrodes has the vertical and the horizontal components, and the liquid crystal molecules are re-arranged to have a twist angle and a tilt angle.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 17, 2011
    Inventors: Jin-Tae Yuh, Kye-Hun Lee, Byoung-Sun Na, Dong-Gyu Kim, Jong-Woong Chang, Jung-Uk Shim, Jang-Kun Song, Hyun-Sik Lee
  • Publication number: 20110272698
    Abstract: A thin film transistor array panel comprises a plurality of gate lines formed on an insulating substrate; a repair line formed on the insulating substrate; a gate insulating layer formed on the gate lines and the repair line; a plurality of data lines formed on the gate insulating layer; an electricity dissipation line formed on the gate insulating layer crossing the gate lines and the repair line; and a first diode connecting the repair line and the electricity dissipation line. When static electricity is introduced through the repair lines, the static electricity is transferred to the electricity dissipation line and is dispersed or exhausted before it reaches to the data lines. As a result, the TFTs and wires in the display area are prevented from being destroyed by the static electricity.
    Type: Application
    Filed: July 18, 2011
    Publication date: November 10, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Jong-Woong CHANG
  • Patent number: 8049856
    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: Grant
    Filed: May 18, 2007
    Date of Patent: November 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Jong-Woong Chang, Yun-Hee Kwak
  • Patent number: 8045075
    Abstract: A liquid crystal display device and a method of repairing bad pixels thereof, in which the bad pixels can be efficiently and easily repaired, includes a first insulating substrate, a gate wiring and a storage wiring arranged substantially parallel to each other in a first direction on the first insulating substrate, a data wiring intersecting the gate and storage wirings in an insulated manner and arranged substantially in a second direction, and a pixel electrode formed on a pixel area defined by the gate and data wirings. The storage wiring includes a horizontal portion arranged substantially in the first direction and at least a part of which does not overlap the pixel electrode, and a vertical portion branching off substantially in the second direction from the horizontal portion and overlapping the data wiring.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-woong Chang, Shin-tack Kang
  • Publication number: 20110248274
    Abstract: A method for manufacturing a thin film transistor array panel is disclosed. A gate wiring pattern is formed on an insulating substrate. A gate insulating layer is formed on the gate wiring pattern. A semiconductor pattern is formed on the gate insulating layer. A transparent conductive layer is formed on the gate insulating layer. The transparent conductive layer is patterned to form a pixel electrode. An opening is formed at a circumference of the pixel electrode. The opening minimizes misalignment during the manufacturing process and prevents shorts between a data line and the pixel electrode.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 13, 2011
    Inventors: Dong-Gyu KIM, Jun-Ho Song, Jong-Woong Chang, Jae-Ho Choi, Byoung-Sun Na, Young-Bae Park, Sung-Wook Huh
  • Patent number: 8004627
    Abstract: A thin film transistor array panel comprises a plurality of gate lines formed on an insulating substrate; a repair line formed on the insulating substrate; a gate insulating layer formed on the gate lines and the repair line; a plurality of data lines formed on the gate insulating layer; an electricity dissipation line formed on the gate insulating layer crossing the gate lines and the repair line; and a first diode connecting the repair line and the electricity dissipation line. When static electricity is introduced through the repair lines, the static electricity is transferred to the electricity dissipation line and is dispersed or exhausted before it reaches to the data lines. As a result, the TFTs and wires in the display area are prevented from being destroyed by the static electricity.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: August 23, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong-Woong Chang