Multilayer Electrodes Patents (Class 349/147)
  • Patent number: 8368860
    Abstract: The present invention provides a liquid crystal display panel and a method of manufacturing the liquid crystal display panel capable of reducing or eliminating metal erosion in an area in which a conductive dot is formed. In some embodiments, a display panel comprises a common electrode formed on an upper substrate, a first electrode formed on a lower substrate opposing the upper substrate and configured to receive a common voltage, a conductive dot formed between the upper substrate and the lower substrate and positioned to supply the common electrode with the common voltage, an insulating layer having a contact hole exposing the first electrode, and a second electrode formed on the insulating layer to connect the conductive dot and the first electrode, wherein a cross sectional area of the conductive dot between the upper substrate and the lower substrate is greater than a cross sectional area of an opening of the contact hole.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: February 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Han Park, Young Nam Yun, Ji Hye Moon
  • Publication number: 20130027651
    Abstract: In one or more embodiments, barriers for reflective pixels electrodes of display devices and methods are disclosed. In one such embodiment, a reflective spatial light modulator for a display device has a plurality of reflective pixel electrodes. Each reflective pixel electrode may include a conductor, a tantalum containing barrier over the conductor, and a conductive reflector over the conductive barrier.
    Type: Application
    Filed: July 27, 2011
    Publication date: January 31, 2013
    Inventor: Mark Meldrim
  • Patent number: 8358393
    Abstract: In one embodiment of an invention concerning liquid crystal display devices, a first pixel electrode of a thin film transistor (TFT) array substrate may overlap a slit of a second pixel electrode of the TFT array substrate but not overlap another slit of the second pixel electrode. This may help induce a multi-domain electric field without having to precisely position a common electrode of a color filter substrate and the TFT array substrate. This may prevent position errors, enhance display quality, produce a wider viewing angle, and lower color shift sometimes associated with conventional liquid crystal display devices and methods.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: January 22, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Chih-Yung Hsieh, Chien-Hong Chen, Jian-Cheng Chen
  • Patent number: 8355088
    Abstract: A TFT array panel includes an insulating substrate, a gate line, a storage electrode line, a gate insulating layer, a semiconductor island formed on the gate insulating layer, and a data line and a drain electrode formed thereon. The data line and drain electrode are covered with a passivation layer. A pixel electrode is formed on the passivation layer and connected to the drain electrode through a contact hole. The TFT array panel is covered with an alignment layer rubbed approximately in a direction from the upper left corner to lower right corner of the TFT array panel or the pixel electrodes. The pixel electrode overlaps the gate line and data line and has an expansion located near the upper left corner of the pixel electrode to increase the width of the corresponding overlapping area between the pixel electrode and the gate line and/or data line.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: January 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyu Kim, Hyang-Shik Kong, Jang-Soo Kim
  • Patent number: 8355109
    Abstract: An object is to provide a liquid crystal display device which includes a liquid crystal material exhibiting a blue phase and enables higher contrast. In the liquid crystal display device including a liquid crystal layer exhibiting a blue phase, the liquid crystal layer exhibiting a blue phase is interposed between a pixel electrode layer having an opening pattern (slit) and first and second common electrode layers which face each other and have opening patterns. The pixel electrode layer is formed over a structure body which projects into the liquid crystal layer from a surface of a first substrate on the liquid crystal layer side, and the pixel electrode layer is positioned between the first common electrode layer and the second common electrode layer in the liquid crystal layer. The cell gap of the liquid crystal display device is less than 5 ?m (preferably 1 ?m or more).
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: January 15, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Tetsuji Ishitani, Akio Yamashita
  • Patent number: 8344990
    Abstract: A display panel with half source driver structure and a display data supplying method thereof are disclosed. The display panel includes a plurality of gate driving circuits, a data line, a plurality of first gate lines and second gate lines, a plurality of first pixels and second pixels. The first pixels are arranged along the data line and form two columns. The first pixels are disposed at one side of the data line and electrically coupled to the respective first gate lines. The second pixels are arranged along the data line and form two columns. The second pixels are disposed at an opposite side of the data lines and electrically coupled to the respective second gate lines. The data line has a bending portion between each two sequentially connected first pixels. The gate driving circuits are electrically coupled to the first gate lines and the second gate lines.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: January 1, 2013
    Assignee: AU Optronics Corp.
    Inventors: Ken-Ming Chen, Chi-Mao Hung, Chao-Liang Lu
  • Patent number: 8339559
    Abstract: A liquid crystal display unit structure and the manufacturing method thereof are provided. The liquid crystal display unit structure comprises a patterned first metal layer with a first data line segment and a gate line on a substrate; a patterned dielectric layer covering the first data line and the gate line having a plurality of first openings and a second opening therein, a patterned etch stop layer having a first portion located above the first data line segment and a second portion; a patterned second metal layer including a common electrode line, a second data line segment, a source electrode and a drain electrode, wherein the first portion of the patterned etch stop layer is between the first data line segment and the common line; a patterned passivation layer and a patterned transparent conductive layer.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: December 25, 2012
    Assignee: AU Optronics Corp.
    Inventors: Liu-Chung Lee, Hsiang-Lin Lin, Kuo-Yu Huang
  • Publication number: 20120320326
    Abstract: According to one embodiment, a liquid crystal display apparatus includes a display region including a plurality of display pixels arrayed in a matrix, an array substrate including a plurality of first electrodes which are arrayed in a matrix, second electrodes which are arranged on the same layer as a layer of the first electrodes and connect the first electrodes to each other, and third electrodes which are arrayed in a matrix on the first electrodes and the second electrodes, a countersubstrate which is arranged to face the array substrate, and a liquid crystal layer which is interposed between the array substrate and the countersubstrate.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 20, 2012
    Inventors: Takashi DOI, Toshihiro NINOMIYA
  • Patent number: 8330924
    Abstract: An array substrate for a liquid crystal display device includes a gate line, a data line including a first data line having a first width and a second data line having a second width overlying the first data line, the second width is larger than the first width, a pixel electrode in a pixel region and defined by a crossing of the gate line and the data line, the pixel electrode being formed during a same process as the second data line, and a thin film transistor connected to the pixel electrode.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Han-Su Yee, Young-Hun Ha
  • Patent number: 8325285
    Abstract: A method of manufacturing, with high mass productivity, liquid crystal display devices having highly reliable thin film transistors with excellent electric characteristics is provided. In a liquid crystal display device having an inverted staggered thin film transistor, the inverted staggered thin film transistor is formed as follows: a gate insulating film is formed over a gate electrode; a microcrystalline semiconductor film which functions as a channel formation region is formed over the gate insulating film; a buffer layer is formed over the microcrystalline semiconductor film; a pair of source and drain regions are formed over the buffer layer; and a pair of source and drain electrodes are formed in contact with the source and drain regions so as to expose a part of the source and drain regions.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: December 4, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yukie Suzuki, Hideaki Kuwabara, Hajime Kimura
  • Patent number: 8314915
    Abstract: A liquid crystal display panel includes a pair of substrates having a liquid crystal layer interposed therebetween. One of the substrates includes a plurality of scanning lines and signal lines which are arrayed on a display region so as to form a matrix shape, a common wiring formed on a peripheral area surrounding the display region, an interlayer film, pixel electrodes, an inter-electrode insulating film, and a common electrode that is electrically connected to the common wiring. On the surface of the common electrode, or between the common electrode and the inter-electrode insulating film, a conductive layer, which is composed of a material of a conductivity superior to a conductivity of the transparent conductive material composing the common electrode, is formed at locations overlapped with locations at which the plurality of scanning lines and the signal lines are formed.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: November 20, 2012
    Assignee: Sony Corporation
    Inventor: Akio Ota
  • Patent number: 8310644
    Abstract: An in-plane switching mode liquid crystal display device includes first and second substrates facing each other, a gate line and a data line arranged on the first substrate crossing each other and defining a pixel region, a switching device at a crossing of the gate line and the data line, a common electrode and a pixel electrode alternately disposed in the pixel region, at least one of the common electrode and the pixel electrode including a multi-layer having a conductor layer and a reflectance reducing layer, and a liquid crystal layer formed between the first and second substrates.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 13, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Ji Young Ahn
  • Patent number: 8304776
    Abstract: The present invention relates to a thin film transistor substrate and method for fabricating the same which can secure an alignment margin and reduce the number of mask steps. A thin transistor substrate according to the present invention includes a gate line and a data line crossing each other to define a pixel, a gate metal pattern under the data line, a thin film transistor having a gate electrode, a source electrode and a drain electrode in the pixel, and a pixel electrode connected to the drain electrode of the thin film transistor by a connection electrode, wherein the data line has a plurality of first slits to disconnect the gate metal pattern from the gate line.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: November 6, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Seung Hee Nam
  • Patent number: 8305536
    Abstract: A liquid crystal display device and a method for fabricating the same are provided. The method includes forming a gate line and a data line on a first substrate crossing each other to define a pixel region; forming a gate electrode, a source electrode and a drain electrode of a transistor on the first substrate; forming an active layer below the data line and between the gate electrode and each of the source electrode and the drain electrode, wherein the active layer below the data line has an exposed portion exposed by the data line; removing the exposed portion of the active layer below the data line; and forming a pixel electrode connected to the drain electrode.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 6, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Joon-Young Yang
  • Patent number: 8289489
    Abstract: Provided are a fringe-field-switching (FFS)-mode liquid crystal display (LCD) and a method of manufacturing the same. The FFS-mode LCD includes a transparent common electrode, a conductive reflection structure electrically connected to the transparent common electrode, and a transparent pixel electrode formed on the conductive reflection structure and including a plurality of slits. The transparent common electrode is formed on a region including a data line and a gate line so that respective unit pixel regions can be electrically connected to one another.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 16, 2012
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Moo Shik Im, Dong Hae Seo, Dae Lim Choi, Jong Kyun Park, Soo Young Choi
  • Patent number: 8289491
    Abstract: A liquid crystal display device includes a p-type driving thin film transistor and an n-type driving thin film transistor in a non-display region of a substrate. The p-type driving thin film transistor includes a first polycrystalline semiconductor pattern, a first gate electrode, a first source electrode and a first drain electrode. The n-type driving thin film transistor includes a second polycrystalline semiconductor pattern, a second gate electrode, a second source electrode and a second drain electrode. The liquid crystal display device further includes a gate line and a data line in a display region of the substrate and that cross each other to define a pixel region, and a pixel thin film transistor connected to the gate line and the data line. The pixel thin film transistor also includes a third polycrystalline semiconductor pattern, a third gate electrode, a third source electrode and a third drain electrode.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: October 16, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sook-Woo Lee, Yung In Park
  • Patent number: 8278664
    Abstract: Provided are an organic light emitting display device (OLED) and a method of fabricating the same. When a electrically conductive line and a gate electrode are formed at the same time or when a first electrode is formed, interconnections for electrically connecting elements are formed. Thus, the number of used masks can be reduced, so that the overall fabrication process can be shortened and the production cost can be reduced.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: October 2, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eui-Hoon Hwang, Sang-Gul Lee
  • Patent number: 8269907
    Abstract: A method for fabricating is provided for a liquid crystal display device capable of decreasing the number of masks used to fabricate a thin film transistor (TFT) by forming an active pattern and a storage electrode by a single mask process, by simultaneously patterning a pixel electrode at the time of a gate line patterning, and by using only an organic insulation layer having a low dielectric constant.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: September 18, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Joo Kim, Seok-Woo Lee
  • Patent number: 8269938
    Abstract: An FFS mode LCD and a fabrication method thereof are provided. The fabrication method comprises: etching a common electrode material and a gate metal on a board at the same time through a first mask process; forming a gate insulating layer, an active layer and a source/drain metal on the board; forming a channel in a TFT part, forming an opening in the pixel area part by diffraction exposure and exposing a gate pad part through a second mask process; forming a passivation layer substantially on board, and forming a contact hole in TFT part, etching regions in pixel area part and exposing a gate pad and a data pad part through a third mask process; and forming a pixel electrode on regions of the TFT, pixel area part and opened regions of the gate pad and data pad part through a fourth mask process.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: September 18, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Chan Choi, Hyun Kyu Lee
  • Patent number: 8264652
    Abstract: A fringe field switching thin film transistor substrate includes a gate electrode connected to the gate line, a source electrode connected to the data line, a drain electrode opposed to the pixel electrode and a semiconductor layer defining a channel between the source electrode and the drain electrode. A common electrode extends from the common line into the pixel area. A pixel electrode extends from the drain electrode into the pixel area overlapping the common electrode with the gate insulating film. The gate line and the common line are formed from a first conductive layer group having double conductive layers, and the common electrode is formed by an extension of the lowermost layer of the common line. The data line, the source electrode and the drain electrode are formed of a second conductive layer group having double conductive layers.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: September 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Byung Chul Ahn
  • Patent number: 8259275
    Abstract: Provided is a liquid crystal display device capable of significantly reducing occurrence of a failure such as an interlayer short-circuit. In the liquid crystal device, a first layer formed of a copper film having a purity of 99.5% or more and a second layer formed of an alloy film containing copper as a main component are successively formed on a glass substrate or a substrate on which a transparent conductive film containing indium is formed. The alloy film serving as the second layer is made of an alloy containing copper as a main component, which has a higher etching rate in a wet etching process compared with that of copper. Accordingly, a patterned cross-section of the copper film having a large film thickness can be etched in a tapered shape, to thereby improve coverage of an insulating film or the like laminated on a wiring pattern.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: September 4, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takaaki Suzuki, Takuya Takahashi
  • Patent number: 8253873
    Abstract: To form a sufficiently large storage capacitor, a liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal held between the first substrate and the second substrate, the liquid crystal display panel having multiple pixels arranged in matrix. The first substrate has, in a transmissive display area provided in each of the pixels, a laminated structure containing a first transparent electrode, a first insulating film, a second transparent electrode, a second insulating film, and a third transparent electrode which are laminated in this order. The first transparent electrode and the second transparent electrode are electrically insulated from each other and together form a first storage capacitor through the first insulating film, and the second transparent electrode and the third transparent electrode are electrically insulated from each other and together form a second storage capacitor through the second insulating film.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: August 28, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tohru Sasaki, Takahiro Ochiai
  • Patent number: 8253905
    Abstract: The present invention provides a liquid crystal display device including a substrate, a first conductive layer disposed on the substrate, a gate insulating layer covering the first conductive layer, and a second conductive layer disposed on the gate insulating layer, wherein the first conductive layer including a first sub-data line and a gate line, the second conductive layer including a source electrode and a common electrode, and the common electrode is disposed opposite to the first conductive electrode, and a method of making the same with five photolithographic and etching processes.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: August 28, 2012
    Assignee: HannStar Display Corp.
    Inventors: Yung-Hsin Lu, Yu-Ting Chen
  • Patent number: 8233126
    Abstract: An active matrix type liquid crystal display device includes first and second substrates, a liquid crystal layer disposed between the first and second substrates, a plurality of pixel regions formed by image signal lines and scan signal lines, and a semiconductor layer, a pixel electrode, a counter electrode formed on the first substrate in a pixel region. The pixel electrode is arranged at level which is lower than a level of the semiconductor layer.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: July 31, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masuyuki Ohta, Kazuhiro Ogawa, Keiichiro Ashizawa, Kazuhiko Yanagawa, Masahiro Yanai, Nobutake Konishi, Nobuyuki Suzuki, Masahiro Ishii, Makoto Yoneya, Sukekazu Aratani
  • Patent number: 8233105
    Abstract: In order to restrain increase in frame area caused along with a larger number of channels to a minimum, there is provided an image display device that adopts a communication method in which a signal is transmitted/received with the use of electrostatic capacitance coupling. A first board includes: a tabular first power supply line, a tabular second power supply line, a semiconductor element, and a tabular first electrode group. A second board includes: a tabular second electrode group and a tabular common electrode. In a state where the first board and the second board are laid on each other, the first electrode group overlaps the second electrode group while one of the first power supply line and the second power supply line overlaps the common electrode.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 31, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hiroshi Kageyama, Futoshi Furuta, Ken Takei
  • Patent number: 8218120
    Abstract: A fabricating method of an array substrate for an in-plane switching liquid crystal display device includes: forming a gate line and a common line on a substrate, the common line spaced apart from the gate line; forming a data line crossing the gate line to define a pixel region; forming a thin film transistor connected to the gate line and the data line; forming a pixel electrode and a common electrode in the pixel region, each of the pixel electrode and the common electrode including an opaque metal layer; and irradiating ultraviolet rays onto the opaque metal layer to form a metal oxide layer on the opaque metal layer.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: July 10, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ji-Young Ahn, Jae-Young Oh
  • Patent number: 8203682
    Abstract: A display substrate includes a first switching element, a second switching element, a first pixel electrode, a second pixel electrode, a main storage electrode and a sub-storage electrode. The first switching element is connected to a data line and a first gate line. The second switching element is connected to the data line and a second gate line adjacent to the first gate line. The first pixel electrode is electrically connected to the first switching element. The second pixel electrode is electrically connected to the second switching element. The main storage electrode is disposed in an area between the first pixel electrode and the second electrode to overlap with first ends of the first and second pixel electrodes. The sub-storage electrode is spaced apart from the first and second gate lines.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: June 19, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Woo Lee, Jong-Oh Kim, Sung-Man Kim, Sun-Kyu Joo, Bong-Jun Lee, Jae-Min Shin
  • Patent number: 8203683
    Abstract: An electro-optic device includes a pixel section and a terminal section through which a semiconductor circuit or a wiring board is mounted around the pixel section. The terminal section has a multilayer structure including a terminal connection wire including an uppermost layer containing titanium, a terminal interlayer made of an electroconductive material capable of being wet-etched, and a terminal transparent electroconductive film in that order from below.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: June 19, 2012
    Assignee: Sony Corporation
    Inventors: Nobuhiko Oda, Satoshi Ishida, Masaaki Aota, Tomoyasu Hirata, Kazuyoshi Sakai, Kosuke Takasu
  • Patent number: 8199271
    Abstract: An LCD device and a method for fabricating the same is disclosed that improves a yield by decreasing processing time. The LCD device includes gate and data lines formed substantially perpendicular to each other on a substrate and defining a unit pixel region; a thin film transistor formed at a crossing of the gate and data lines; an active layer formed over the gate line, the data line, and the thin film transistor; an organic resin formed on a portion of a gate insulating layer not including the gate line, the data line, and the thin film transistor; a passivation layer formed on an entire surface of the substrate including the thin film transistor; and a pixel electrode, formed in the unit pixel region, the pixel electrode being connected with a drain electrode of the thin film transistor.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: June 12, 2012
    Assignee: LG Display, Co., Ltd.
    Inventor: Gee Sung Chae
  • Patent number: 8199303
    Abstract: A liquid crystal display unit structure and the manufacturing method thereof are provided. The method comprises the following steps: forming a patterned first metal layer with a first data line segment and a lower gate pad on a substrate; forming a patterned dielectric layer covering the first data line and the lower gate pad having a plurality of first openings and a second opening therein, forming a patterned second metal layer including a common line, a second data line segment and a upper gate pad, wherein the upper gate pad is electrically connected to the lower gate pad through the first openings, and the second data line segment is electrically connected to the first data line segment through the first openings; finally forming a patterned passivation layer and a patterned transparent conductive layer.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: June 12, 2012
    Assignee: Au Optronics Corp.
    Inventors: Liu-Chung Lee, Hsiang-Lin Lin, Kuo-Yu Huang
  • Patent number: 8199305
    Abstract: A pixel well includes first and second electrodes below a floor.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: June 12, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • Patent number: 8174660
    Abstract: Provided are a metal line, a method of forming the same, and a display using the same. To increase resistance of a metal line having a multilayered structure of CuO/Cu and prevent blister formation, a plasma treatment is performed using a nitrogen-containing gas and a silicon-containing gas or using a hydrogen or argon as and the silicon-containing gas. Accordingly, a plasma treatment layer such as a SiNx or Si layer is thinly formed on the copper layer, thereby preventing an increase in resistance of the copper layer and also preventing blister formation caused by the damage of a copper oxide layer. Consequently, it is possible to improve the reliability of a copper line and thus enhance the reliability of a device.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: May 8, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Ryul Kim, Yong-Mo Choi, Sung-Hoon Yang, Hwa-Yeul Oh, Kap-Soo Yoon, Jae-Ho Choi, Seong-Hun Kim
  • Publication number: 20120069286
    Abstract: The disclosed technology relates to an array substrate and a method of manufacturing the same, and a liquid crystal display. The array substrate comprises a base substrate. The base substrate comprises a pixel region and a peripheral region; data lines and gate lines are formed to transversely and longitudinally cross each other on the base substrate to form a plurality of pixel units, and each of the pixel units comprises a switching element, a pixel electrode and a common electrode above the pixel electrode; the common electrode has slits in each pixel unit and is a plate-shaped electrode in the pixel region, when powered on, the common electrode forms a horizontal electric field together with the pixel electrode of the pixel unit; and a common electrode line formed in the pixel region and connected with the common electrode.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 22, 2012
    Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Weiyun HUANG, Young Yik KO, Minghua XUAN
  • Patent number: 8130355
    Abstract: A liquid crystal display device includes a first substrate having a common electrode thereon; a second substrate coupled to the first substrate, the second substrate having a connection electrode facing a portion of the common electrode on the first substrate, the connection electrode including a lower electrode made of metal, an insulating layer formed over the lower electrode and having a plurality of contact holes, and an upper electrode made of oxide conductor over the insulating layer, the upper electrode being electrically connected to the lower electrode via the plurality of contact holes; and a plurality of conductive gap members disposed between said portion of the common electrode and the upper electrode of the connection electrode to electrically connect said portion of the common electrode to the upper electrode of the connection electrode.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: March 6, 2012
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kunihiro Matsuda, Norihisa Yamada
  • Patent number: 8125609
    Abstract: An IPS (In-Plane Switching) mode LCD (Liquid Crystal Display) includes first and second substrates facing each other; a plurality of gate lines and data lines arranged in a matrix configuration on the first substrate and defining a plurality of pixel regions; at least one common electrode and one pixel electrode alternatingly disposed at the pixel region to generate a horizontal electric field, at least one of them having a structure of a dual layer; and a liquid crystal layer formed between the first and second substrates.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: February 28, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Ji Young Ahn
  • Patent number: 8111362
    Abstract: A method of manufacturing, with high mass productivity, liquid crystal display devices having highly reliable thin film transistors with excellent electric characteristics is provided. In a liquid crystal display device having an inverted staggered thin film transistor, the inverted staggered thin film transistor is formed as follows: a gate insulating film is formed over a gate electrode; a microcrystalline semiconductor film which functions as a channel formation region is formed over the gate insulating film; a buffer layer is formed over the microcrystalline semiconductor film; a pair of source and drain regions are formed over the buffer layer; and a pair of source and drain electrodes are formed in contact with the source and drain regions so as to expose a part of the source and drain regions.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: February 7, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yukie Suzuki, Hideaki Kuwabara, Hajime Kimura
  • Patent number: 8077265
    Abstract: A liquid crystal display (LCD) panel includes: a first base substrate; a plurality of gate lines and a plurality of data lines disposed on the first base substrate and crossing each other; a pixel electrode pattern disposed on the first base substrate; a storage pattern disposed on the first base substrate, the storage pattern being positioned between consecutive gate lines and substantially in parallel with the gate lines; a second base substrate; a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode; and a liquid crystal layer disposed between the first and second base substrates.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: December 13, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeok-Jin Lee, Hee-Seop Kim, Byoung-Sun Na, LuJian Gang, Hwa-Sung Woo, Ji-Hyun Kwon
  • Patent number: 8040479
    Abstract: A gate line extending in a transverse direction and a data line intersecting the gate line are formed on the substrate. The data line includes a curved portion and an intermediate portion crossing the gate line substantially at a right angle. A pixel electrode is formed on an insulating layer. The pixel electrode is connected to a thin film transistor and it has an edge extending substantially parallel to the curved portion of the data line.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8040667
    Abstract: A portable, sturdy LCD TV is disclosed. The LCD TV is further constructed as a waterproof device and is equipped with an antenna so that the LCD TV, in addition to be used indoors as a computer monitor or TV, is also suitable for outdoor use.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: October 18, 2011
    Assignee: Litemax Electronics Inc.
    Inventor: Tien Deng Yang
  • Patent number: 8031312
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a thin film transistor including a gate electrode of the gate line, a gate insulating layer over the gate electrode, an active layer on the gate insulating layer and ohmic contact layers on the active layer, and source and drain electrodes over the ohmic contact layers, a pixel electrode electrically connected to the drain electrode, a data line electrically connected to the source electrode and crossing the gate line, a common electrode spaced apart from the pixel electrode, and a passivation layer directly between the pixel electrode and the common electrode and directly between the source and drain electrodes.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: October 4, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Joo-Soo Lim, Hyo-Uk Kim, Hee-Young Kwack, Hyun-Seok Hong, Byung-Chul Ahn, Byoung-Ho Lim
  • Patent number: 8027005
    Abstract: An active matrix liquid crystal display device includes first and second substrates, a liquid crystal layer disposed between the first and second substrates, and plural image signal lines and scan signal lines formed on the first substrate. Respective pixel regions are formed by adjacent image signal lines and adjacent scan signal lines, and the respective pixel regions have at least one of a semiconductor layer, a pixel electrode, a counter electrode, and a source electrode which has a high-melting-point metal layer and an aluminum layer formed on the high-melting-point metal layer; wherein the high-melting-point layer enables connection of the semiconductor layer and the pixel electrode, and the pixel electrode is formed between the high-melting-point metal layer and the first substrate; and wherein a part of the scan signal lines positioned between the pixel regions and the gate terminal is covered by an ITO layer electrically connected to the counter electrode.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: September 27, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Masuyuki Ohta, Kazuhiro Ogawa, Keiichiro Ashizawa, Kazuhiko Yanagawa, Masahiro Yanai, Nobutake Konishi, Nobuyuki Suzuki, Masahiro Ishii, Makoto Yoneya, Sukekazu Aratani
  • Patent number: 8027007
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a thin film transistor having a signal line of dual layered structure of a copper compound and copper, and a pixel electrode connected to the thin film transistor.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: September 27, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Gee-Sung Chae, Gyoo-Chul Jo, Yong-Sup Hwang
  • Patent number: 8027001
    Abstract: The present invention provides a transflective liquid crystal display device which can reduce the generation of an image retention even when the transflective liquid crystal display device adopts the constitution in which an aluminum film is formed in a reflective region and a transparent conductive film made of ITO or the like is arranged over the aluminum film.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: September 27, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Toshiki Kaneko, Toshiyuki Matsuura
  • Patent number: 8023086
    Abstract: A pad structure of a liquid crystal display (LCD) device and a fabrication method thereof are provided. The pad structure of the LCD device includes: a bottom electrode formed with a predetermined area at one edge side of each of signal lines formed on an array substrate; an insulation layer formed over the bottom electrode; a contact hole for exposing the bottom electrode, the contact hole formed as a predetermined portion of the insulation layer is etched; and a terminal electrode formed over the contact hole, thereby being connected with the bottom electrode, wherein the bottom electrode is formed in a dual structure including an aluminum alloy layer using AlNd and a molybdenum (Mo) layer and a thickness of the Mo layer is greater than at least about one quarter of the thickness of the aluminum alloy layer formed beneath the Mo layer.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: September 20, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Soo Hwang, Jong A Choi, Jong Sung Yim
  • Patent number: 8018565
    Abstract: A horizontal electric field-type liquid crystal display panel includes a plurality of scanning lines that are disposed parallel to each other, a common wiring, a plurality of signal lines that are disposed in a direction for intersecting the plurality of scanning lines, a switching element that is disposed near an intersection between the scanning line and the signal line, a first electrode formed in an area partitioned by the scanning line and the signal line, and a second electrode that is formed to be overlapped with the first electrode though an insulation film disposed on the first electrode and has a plurality of slits in the shape of a stripe. A shield electrode formed of a conductive material is formed on the surface of the insulation film disposed on the scanning line, and the shield electrode is connected to the common wiring through a contact hole formed on the common wiring.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: September 13, 2011
    Assignee: Sony Corporation
    Inventors: Masahiro Horiguchi, Hideki Kaneko
  • Patent number: 8013970
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device and its fabrication method are discussed. According to an embodiment, the array substrate includes a gate line and a data line crossing the gate line on a base substrate, so as to define a pixel region; a thin film transistor connected to the gate line and the data line; a plurality of pixel electrodes disposed in the pixel region and connected to the thin film transistor; a common line extending substantially parallel to the gate line; and a plurality of common electrodes alternately arranged with the plurality of pixel electrodes in the pixel region, wherein the plurality of common electrodes include at least one first common electrode adjacent to the data line and connected to the common line, and at least one second common electrode extending substantially parallel to the date line and not directly connected to the common line.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Bum-Sik Seo, Ji-Won Kim
  • Patent number: 7995172
    Abstract: An electrically-floating light shielding film is formed on a glass substrate, and a signal line is formed above the light shielding film via a gate insulating film. The light shielding film is formed along the signal line, and has a width larger than that of the signal line. On an interlayer insulating film that covers the signal line, transparent electrodes of neighboring pixels are formed, and a reflective electrode extending from the transparent electrode has a frame portion disposed along the signal line. The reflective electrode is formed the interlayer insulating film. The light shielding film does not overlap the transparent electrode in a plan-view perspective and overlaps the reflective portion in a plan-view perspective. The signal line does not overlap the reflective electrode in a plan-view perspective. Hence, a semitransparent liquid crystal display device that suppresses vertical crosstalk and as well maintains a high aperture ratio is obtained.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: August 9, 2011
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Toshiya Ishii
  • Patent number: 7995182
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a plurality of gate lines arranged transversely on the substrate, a plurality of data lines disposed orthogonal to the plurality of gate lines, a plurality of thin film transistors formed on the substrate adjacent to intersections of the gate lines and the data lines, each thin film transistor including a gate electrode, a gate insulation layer, an active layer, an ohmic contact layer, a source electrode, and a drain electrode, a plurality of pixel electrodes disposed at pixel regions defined by the intersections of the gate lines and the data lines, each pixel electrode connected to a corresponding one of the drain electrodes, and a metal layer formed on an entire surface of each of the data lines.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: August 9, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Byeong-Dae Choi
  • Patent number: 7990510
    Abstract: A liquid crystal display device having a simplified manufacturing process is disclosed. The liquid crystal display device includes a gate line and a common line having a first conductive layer group having at least double conductive layers. A common electrode is formed by an extension of at least one transparent conductive layer of a common line. A portion of the common electrode is formed of one conductive layer of the first conductive layer group, while a remaining portion of the common electrode is formed of the first conductive layer group. The gate line, a source electrode and a drain electrode have a second conductive layer group having at least double conductive layers, and the pixel electrode is formed by an extension of at least one transparent conductive layer of the drain electrode.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 2, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Byung Chul Ahn, Joo Soo Lim, Byung Ho Park
  • Patent number: 7978292
    Abstract: The invention is directed to simultaneously etching thin films to different uniform depths depending on positions by using a photoresist pattern having different thickness depending on positions as an etch mask in order to form a contact hole for a gate pad along with at least one other layer, or a data wire and a semiconductor pattern, via a single photolithography step.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: July 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woon-Yong Park, Jong-Soo Yoon