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).

  • Publication number: 20150268525
    Abstract: A liquid crystal display includes: a first substrate; a gate line and a common voltage line that are on the first substrate; a gate insulating layer on the gate line and the common voltage line; a semiconductor layer on the gate insulating layer; a data line and a drain electrode that are on the semiconductor layer; a pixel electrode on the data line and the drain electrode; a passivation layer on the pixel electrode; a common electrode on the passivation layer; a second substrate; and a liquid crystal layer interposed between the first and second substrates. The pixel electrode contacts the drain electrode via a first contact hole, the common electrode contacts the common voltage line via a second contact hole in the gate insulating layer and the passivation layer, and the first and second contact holes are adjacently disposed in a thin film transistor forming region.
    Type: Application
    Filed: September 3, 2014
    Publication date: September 24, 2015
    Inventors: Yun HEO, Bong-Jun LEE, Dong Wuuk SEO, Jong Woong CHANG
  • Patent number: 9116401
    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: October 21, 2013
    Date of Patent: August 25, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Gyu Kim, Jong Woong Chang
  • Publication number: 20150153601
    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: January 27, 2015
    Publication date: June 4, 2015
    Inventors: Jong-woong CHANG, Shin-tack KANG
  • Patent number: 9041874
    Abstract: Provided is a liquid crystal display including, on an insulation substrate having a polygonal display area and a peripheral area surrounding the display area a first signal line, a second signal line crossing the first signal line, a plurality of switching elements connected to the first signal line and the second signal line and disposed in the display area, a plurality of pixel electrodes each connected to the switching element and disposed in the display area, and a shielding conductor disposed in the peripheral area and extending along at least one side of the polygonal display area.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jong Woong Chang
  • Patent number: 9030615
    Abstract: A display substrate includes a data line disposed on a base substrate, a first pixel electrode disposed at a first side of the data line, a second pixel electrode disposed at a second side of the data line and a storage electrode overlapping with the data line. The storage electrode overlaps with the first pixel electrode by a first overlapping width, and overlaps with the second pixel electrode by a second overlapping width larger than the first overlapping width.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jong-Woong Chang
  • Patent number: 8976331
    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: March 15, 2013
    Date of Patent: March 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-woong Chang, Shin-tack Kang
  • Publication number: 20150062510
    Abstract: Provided is a liquid crystal display including a plurality of pixels disposed in a matrix of pixel rows and pixel columns, the liquid crystal display including: a plurality of gate lines formed on a first substrate and disposed two between every pixel row; a plurality of data lines formed on the first substrate and disposed one between every two adjacent pixel columns; a common voltage line formed on the first substrate and extending in a pixel row direction along a vertical center of the pixel; and a plurality of pixel electrodes and common electrodes formed on the first substrate and overlapping with each other with an insulating layer therebetween, each pixel electrode positioned in a pixel, and in which two pixel electrodes in the two pixel columns disposed between two adjacent data lines among the plurality of data lines are both connected to any one of the two data lines.
    Type: Application
    Filed: July 7, 2014
    Publication date: March 5, 2015
    Inventor: Jong Woong CHANG
  • Publication number: 20150015838
    Abstract: Provided is a liquid crystal display including: a first substrate; a gate line, a data line, and a common voltage line formed on the first substrate; a first passivation layer formed on the gate line, the data line, and the common voltage line; and a pixel electrode and a common electrode formed on the first passivation layer and overlapping each other with a second passivation layer therebetween, and the common electrode is connected to the common voltage line through a common contact hole, and the common contact hole is disposed for every two or more dots.
    Type: Application
    Filed: June 5, 2014
    Publication date: January 15, 2015
    Inventors: Jong Woong CHANG, Dong Ho SHIN, Yun Tae LEE
  • Publication number: 20150001540
    Abstract: A thin film transistor array panel and a display device including the same are disclosed. In one aspect, the thin film transistor array panel includes a plurality of dots located in a display area, each of the plurality of dots including a plurality of pixels, and a plurality of data lines applying data voltages to the plurality of pixels. The thin film transistor array panel also includes a plurality of first dummy data lines located in a first peripheral area of a peripheral area around the display area, the plurality of first dummy data lines are adjacent to a first edge of the display area. The thin film transistor array panel further includes plurality of first data lines applying data voltages to the pixels included in a first dot adjacent to the first edge and are respectively connected to the plurality of first dummy data lines.
    Type: Application
    Filed: January 31, 2014
    Publication date: January 1, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jong Woong Chang
  • Publication number: 20140347592
    Abstract: A display substrate includes a data line disposed on a base substrate, a first pixel electrode disposed at a first side of the data line, a second pixel electrode disposed at a second side of the data line and a storage electrode overlapping with the data line. The storage electrode overlaps with the first pixel electrode by a first overlapping width, and overlaps with the second pixel electrode by a second overlapping width larger than the first overlapping width.
    Type: Application
    Filed: August 8, 2014
    Publication date: November 27, 2014
    Inventor: Jong-Woong CHANG
  • Patent number: 8836876
    Abstract: A display substrate includes a data line disposed on a base substrate, a first pixel electrode disposed at a first side of the data line, a second pixel electrode disposed at a second side of the data line and a storage electrode overlapping with the data line. The storage electrode overlaps with the first pixel electrode by a first overlapping width, and overlaps with the second pixel electrode by a second overlapping width larger than the first overlapping width.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jong-Woong Chang
  • Patent number: 8833952
    Abstract: A display apparatus includes a display panel, a light source, a polarizer, and a transparent reflective element. The display panel includes a color filter including a first portion and a second portion in a pixel area. The first portion has a first light transmittance. The second portion has a second light transmittance higher than the first light transmittance. The light source provides a light to the display panel. The polarizer is disposed between the light source and the display. The polarizer polarizes the light. The transparent reflective element is spaced apart from the display panel. The transparent reflective element reflects an image provided from the display panel.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Woong Chang, Chul Huh, Kyong-Sik Choi, Sang-Hun Lee, Yui-Ku Lee
  • Patent number: 8835927
    Abstract: A display substrate includes a gate line extended in one direction of a base substrate, a first data line extended in a direction crossing the gate line, a transverse storage line extended in the extending direction of the gate line and crossing the first data line, a longitudinal storage line extended in the extending direction of the first data line and crossing the transverse storage line, a portion of an overlapping area between the longitudinal storage line and the transverse storage line is exposed in a contact part region having an opening partially exposing the transverse storage line. A contact electrode covers the contact part opening and makes electrical contact with each of the transverse storage line and the longitudinal storage line.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Woong Chang, Ho-Kyoon Kwon, Kee-Byem Kim, Yun-Soo Kim, Dae-Ho Song
  • Publication number: 20140204009
    Abstract: A gate driver includes a plurality of stages, wherein an n-th stage includes: a pull-up unit configured to output a high voltage of a clock signal as a high voltage of an n-th gate signal; a pull-down unit configured to decrease the high voltage of the n-th gate signal to a first low voltage; a discharging unit configured to discharge a voltage of the first node to a second low voltage lower than the first low voltage; a carry unit configured to output the high voltage of the clock signal as an n-th carry signal; an inverter unit configured to output a signal in synchronization with the clock signal; a first node storage unit configured to maintain the voltage of the first node at the second low voltage; and a second node storage unit configured to maintain the voltage of the second node at the first or second low voltage.
    Type: Application
    Filed: June 28, 2013
    Publication date: July 24, 2014
    Inventors: Kang Nam Kim, Duc-Han Cho, You Mee Hyun, Jeong-II Kim, Jong Woong Chang
  • Patent number: 8760610
    Abstract: An array substrate includes a gate line, a data line, a plurality of common electrodes, a shield electrode, and a pixel electrode. The gate line is extended along a first direction, and the data line is extended along a second direction. The common electrodes are formed in a plurality of pixel areas. The common electrodes are spaced apart from each other. The shield electrode is formed below the data line and formed between the common electrodes formed in the pixel areas adjacent to each other. The pixel electrode is overlapped with the common electrodes. The pixel electrode has a plurality of openings formed thereon. Therefore, an electric field of a common electrode pattern may prevent coupling between a pixel electrode and a data line, so that a distance between the pixel electrode and the data line may be minimized, and thus an aperture ratio and light transmittance may be enhanced.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: June 24, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jong-Woong Chang
  • Publication number: 20140138688
    Abstract: According to an embodiment of the present invention, a thin film transistor array panel includes a gate line and a data line insulated from each other an insulating substrate where the gate line and the data line cross each other to define a pixel region, a thin film transistor (TFT) disposed at an intersection of the gate line and the data line, a floating electrode where at least a portion of the floating electrode overlaps the data line, and a pixel electrode disposed at the pixel region where the pixel electrode is connected to the TFT and overlaps the at least a portion of the floating electrode.
    Type: Application
    Filed: December 5, 2013
    Publication date: May 22, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jong-woong CHANG
  • Publication number: 20140104558
    Abstract: An array substrate includes a gate line, a data line, a plurality of common electrodes, a shield electrode, and a pixel electrode. The gate line is extended along a first direction, and the data line is extended along a second direction. The common electrodes are formed in a plurality of pixel areas. The common electrodes are spaced apart from each other. The shield electrode is formed below the data line and formed between the common electrodes formed in the pixel areas adjacent to each other. The pixel electrode is overlapped with the common electrodes. The pixel electrode has a plurality of openings formed thereon. Therefore, an electric field of a common electrode pattern may prevent coupling between a pixel electrode and a data line, so that a distance between the pixel electrode and the data line may be minimized, and thus an aperture ratio and light transmittance may be enhanced.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jong-Woong CHANG
  • Publication number: 20140092148
    Abstract: A display substrate includes a data line disposed on a base substrate, a first pixel electrode disposed at a first side of the data line, a second pixel electrode disposed at a second side of the data line and a storage electrode overlapping with the data line. The storage electrode overlaps with the first pixel electrode by a first overlapping width, and overlaps with the second pixel electrode by a second overlapping width larger than the first overlapping width.
    Type: Application
    Filed: December 5, 2013
    Publication date: April 3, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Jong-Woong CHANG
  • Publication number: 20140078430
    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: Application
    Filed: October 21, 2013
    Publication date: March 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Gyu Kim, Jong Woong Chang
  • Patent number: 8648973
    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: Grant
    Filed: October 17, 2011
    Date of Patent: February 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jong-Woong Chang