Search Patents
  • Liquid crystal display and fabricating method thereof
    Patent number: 7915063
    Abstract: A liquid crystal display device includes a plurality of liquid crystal cells on a substrate, a plurality of drive lines extending along first and second directions and connected to the plurality of liquid crystal cells, a plurality of pad lines extending from each of the plurality of drive lines at a first angle from one of the first and second directions, and a plurality of pads extending at the first angle and connected to each of the plurality of pad lines for supplying external drive signals.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: March 29, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Ho Oh, Su Woong Lee
  • Photo sensor and display device having the same
    Patent number: 10134800
    Abstract: Disclosed herein is a photo sensor comprising a first thin film transistor (TFT) configured to convert light energy to electric energy; a storage capacitor having a first electrode and a second electrode configured to face to each other, and storing the electric energy from the first TFT as charge; and a second TFT configured to output the charge stored in the storage capacitor according to a control signal, wherein a first gate electrode of the first TFT, a first electrode of the storage capacitor and a second gate electrode of the second TFT are integrally formed.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 20, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyoseop Choo, Guensik Lee, Manhyeop Han
  • Flexible display apparatus having a well and a discontinuous region in an encapsulation layer
    Patent number: 11456430
    Abstract: A flexible display device including a well structure. An organic light-emitting element including a pixel electrode, an organic light-emitting layer, and a common electrode is disposed on a substrate. A bank layer is disposed on the pixel electrode, and is disposed to open at least a part of the pixel electrode. Further, at least one well structure is disposed on the bank layer. The well structure disposed on the bank layer can reduce or minimize a delamination phenomenon of an encapsulation layer which can occur due to compressive and tensile stress caused by bending of the flexible display device.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: September 27, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Miseong Kim
  • Array substrate and method of fabricating the same
    Patent number: 9543339
    Abstract: An array substrate includes an oxide semiconductor layer; an etch stopper including a first contact hole exposing each of both sides of the oxide semiconductor layer; source and drain electrodes spaced apart from each other with the oxide semiconductor layer therebetween; a first passivation layer including a contact hole exposing each of both ends of the oxide semiconductor layer and each of ends of the source and drain electrode that oppose the both ends of the oxide semiconductor layer, respectively; and a connection pattern at the second contact hole contacting both the oxide semiconductor layer and each of the source and drain electrodes.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: January 10, 2017
    Assignee: LG Dislay Co., Ltd.
    Inventor: Joon-Young Yang
  • Display having selective portions driven with adjustable refresh rate and method of driving the same
    Patent number: 9489882
    Abstract: There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: November 8, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Hyoung-Su Kim, Namwook Cho, TaeHwan Kim, Jaemyon Lee
  • Thin film transistor having an insulating membrane layer on a portion of its active layer
    Patent number: 6023087
    Abstract: A thin film transistor and its fabrication method are disclosed wherein the thin film transistor includes a semiconductor substrate, an active layer formed on an upper surface of the semiconductor substrate, a membrane layer formed on a portion of the active layer and defining an offset region in the active layer, a gate insulation layer formed on portions of the membrane layer and the active layer, a gate electrode formed on a portion of the gate insulation layer, and a source region and a drain region formed in the active layer.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: February 8, 2000
    Assignee: LG Semicon Co., Ltd.
    Inventor: Hae-Chang Yang
  • Display device having multiple transistors
    Patent number: 11800750
    Abstract: Disclosed is a display device having improved reliability. The display device includes a first transistor disposed on a substrate, an electrical property of the first transistor being shifted from a first initial value in a decreasing direction; a second transistor disposed on the substrate, an electrical property of the second transistor being shifted from a second initial value in an increasing direction; and a first upper barrier conductive layer disposed so as to overlap a first active layer of the first transistor and not to overlap a second active layer of the second transistor, whereby reliability of each of the first and second transistors is improved.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: October 24, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Kyeong Ju Moon, So Young Noh
  • Method of fabricating polycrystalline silicon and switching device using polycrystalline silicon
    Patent number: 7180198
    Abstract: A method of fabricating polycrystalline silicon includes: forming a semiconductor layer of amorphous silicon on a substrate having a first region and a second region surrounding the first region; forming a plurality of flat align keys in the second region using a first mask; forming a plurality of convex align keys by etching the semiconductor layer in the first region, the plurality of convex align keys having steps against the substrate; and crystallizing the semiconductor layer in the first region by aligning a second mask with respect to the plurality of convex align keys.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: February 20, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Young-Joo Kim
  • Thin film transistor array substrate and fabricating method thereof
    Patent number: 7342252
    Abstract: A thin film transistor array substrate structure includes a plurality of data lines; a plurality of gate lines intersecting the data lines to define pixel areas, the gate line being adjacent to at least two pixel areas; a plurality of common lines disposed between the at least two pixel areas; a plurality of thin film transistors formed at each intersection between the gate lines and the data lines; a plurality of common electrodes provided substantially parallel to the common lines; and a plurality of pixel electrodes connected to the thin film transistors.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: March 11, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Hyeon-Ho Son
  • LCD having contact electrode coupling gate electrode of first pixel to region active layer of second pixel region
    Patent number: 6067132
    Abstract: Disclosed are a liquid crystal display device and a method for fabricating the same in which a storage capacitor has a transparent structure formed of an active layer, a gate insulating film, and a pixel electrode so that aperture can be improved. Since metal material having very low resistance is used as gate lines, the resistance of the gate lines is significantly reduced, thereby fabricating the liquid crystal display device having high density and high definition.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: May 23, 2000
    Assignee: LG Electronics Inc.
    Inventor: Hong-Gyu Kim
  • Organic electroluminescent device and method for fabricating the same
    Patent number: 9418893
    Abstract: Disclosed an organic electroluminescent device and a method for fabricating the same. The device may include a thin film transistor disposed on a substrate; a first electrode formed for each pixel on the thin film transistor; a first pixel define layer formed to cover an edge portion of the first electrode; a second pixel define layer formed on the first pixel define layer; an organic layer formed on the first electrode; and a second electrode formed on the organic layer.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 16, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin Park, Ki Soub Yang, Dae Jung Choi, Seung Ryul Choi, Han Hee Kim, Kang Hyun Kim, Ji Hyun Lee
  • THIN FILM TRANSISTOR SUBSTRATE
    Publication number: 20140138691
    Abstract: A thin film transistor substrate includes: pluralities of gate lines and data lines arranged to define a plurality of pixel regions, and a plurality of thin film transistors formed on the pixel regions in such a manner as to include first and second thin film transistors connected to the same gate line and the pixel regions adjacent to each other. Each of the first and second thin film transistors includes: a gate electrode connected to the gate line; a semiconductor layer formed on the gate line in an octagon shape; a source electrode connected to the data line; and a drain electrode formed in an opposite shape to the source electrode.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hun Jang, Joon Young Yang, Gyu Tae Kang
  • Organic light emitting diode display and fabricating method thereof
    Patent number: 7786481
    Abstract: An organic light emitting diode display device includes a switch TFT and a drive TFT formed on a substrate; an overcoat layer formed on the TFTs; a drain contact hole exposing portions of a drain electrode of the drive TFT by removing portions of the overcoat layer; a first electrode contacting to the drain electrode of the drive TFT; a bank pattern exposing an aperture area of a pixel; an organic layer formed on the first electrode; and a second electrode formed on the organic layer, wherein the bank pattern blocks regions where the drain contact hole is formed.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 31, 2010
    Assignee: LG Display Co., Ltd.
    Inventor: Heedong Choi
  • Thin film transistor substrate for display device and fabricating method thereof
    Patent number: 8071984
    Abstract: A thin film transistor substrate for a display device having a plurality of thin film transistors and pixel electrodes connected to the thin film transistors, said thin film transistor substrate includes: a plurality of pad electrodes in a non-display area of the display device for applying signals to the plurality of thin film transistors in a non-display area of the display device; a protective film covering the pad electrodes in the non-display area; and a slit in the protective film adjacent to at least one of the plurality of pad electrodes.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: December 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Youn Gyoung Chang, Heung Lyul Cho
  • Liquid crystal display having separable gate lines and gate shorting bar when the connection portion is oxidized
    Patent number: 6020599
    Abstract: A thin film transistor array substrate of a liquid crystal display is provided which includes a substrate, a shorting bar on the substrate, and a plurality of gate lines connected to the shorting bar, each gate line having an electrically non-connection region and a connection region connecting the non-connection region to the shorting bar, wherein said connection region has a thickness such that the gate lines and the shorting bar are electrically separated from each other when the connection regions are anodized.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: February 1, 2000
    Assignee: LG Electronics Inc
    Inventor: Ju-Cheon Yeo
  • Liquid crystal display device and method of manufacturing liquid crystal display device with color filter layer on thin film transistor
    Patent number: 7612373
    Abstract: A method of fabricating a liquid crystal display device is provided. The method of fabricating a liquid crystal display device includes forming a thin film transistor including a source electrode and a drain electrode on a substrate, forming a first passivation layer on the substrate, forming a black matrix on the first passivation layer, forming a color filter layer on the first passivation layer in the pixel region, and forming a pixel electrode above the color filter layer and the black matrix by using a single mask.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: November 3, 2009
    Assignee: LG Display Co., Ltd.
    Inventor: Jong-Jin Park
  • Organic light emitting display device with insulating part and method of manufacturing the same
    Patent number: 9577207
    Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a substrate, a pixel electrode disposed on the substrate, an organic emission layer disposed on the pixel electrode, a common electrode including a metal layer disposed on the organic emission layer, a conductive organic layer disposed on the metal layer, and a first metal oxide layer disposed on the conductive organic layer, and an insulating part formed in a part of an area of a surface of the metal layer which is exposed to a foreign material. The insulating part insulates the pixel electrode from the common electrode.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: February 21, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Young Mi Kim, Joon Young Heo, Yeon Kyeong Lee
  • Organic light emitting device
    Patent number: 7964872
    Abstract: An organic light emitting device includes a transistor having gate, source, and drain electrodes, and first electrode connected to one of the source or drain electrodes. The device also includes an emitting layer positioned on the first electrode and a second electrode positioned on the emitting layer. Each of the source and drain electrodes includes first, second, and third layers having different tapered angles. The first electrode may include a metallic layer and a conductive layer, with a tapered angle of the metallic layer being different from a tapered angle of the conductive layer.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: June 21, 2011
    Assignee: LG Electronics Inc.
    Inventor: Yunsik Jeong
  • Method of fabricating an array substrate for an x-ray detector
    Patent number: 6528819
    Abstract: An array substrate for use in an X-ray sensing device is fabricated using an etching stopper that enables good control of the etching process, and an electrode that prevents damage caused by static electricity generated during a dry-etching step. During fabrication, the array substrate includes a plurality of gate lines that are all electrically connected to an electrode pattern via gate line extensions and gate line contact holes. The electrode pattern causes the gate lines to have equipotentials, which reduces static electricity induced defects.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: March 4, 2003
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Kyo-Seop Choo, June-Ho Park
  • Array substrate and method of fabricating the same
    Patent number: 8912539
    Abstract: An array substrate includes an oxide semiconductor layer; an etch stopper including a first contact hole exposing each of both sides of the oxide semiconductor layer; source and drain electrodes spaced apart from each other with the oxide semiconductor layer therebetween; a first passivation layer including a contact hole exposing each of both ends of the oxide semiconductor layer and each of ends of the source and drain electrode that oppose the both ends of the oxide semiconductor layer, respectively; and a connection pattern at the second contact hole contacting both the oxide semiconductor layer and each of the source and drain electrodes.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 16, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Joon-Young Yang