Patents Examined by David Nelms
  • Patent number: 7932983
    Abstract: A method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device includes injecting a liquid crystal into a liquid crystal receiving space. The liquid crystal receiving space is disposed between a first substrate, a second substrate that faces the first substrate, and a sealing member interposed between the first and second substrates. The method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device further includes reducing a thickness of the sealing member at a predetermined portion of the sealing member to form a repair region, and pressurizing the liquid crystal to break the sealing member at the repair region to discharge some of the liquid crystal from the liquid crystal receiving space, so as to adjust the amount of the liquid crystal in the liquid crystal receiving space. The method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device also includes resealing the broken repair region of the sealing member.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Chong Chan Eun, Sang Ho Park, Tae Man Kim, June Beom Cho, Chang Gun Song
  • Patent number: 7932982
    Abstract: A display device with a plurality of gate signal lines extended in the first direction; a plurality of drain signal lines extended in the second direction; a plurality of pixel regions in a state that each pixel region includes a switching device, a pixel electrode which is connected with the drain signal line and a counter electrode. The counter electrode is formed with respect to the pixel electrode by way of an insulation film and is formed every pixel. The pixels include first pixels and second pixels, wherein only the first pixels have a counter voltage signal line which extends in the first direction, and the counter voltage signal line is connected with the counter electrodes in the first pixels. Further, the counter electrodes of the first pixels and the counter electrodes of the second pixels are electrically connected with each other using conductive stride over the gate signal line.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 26, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Akira Matsuoka, Kikuo Ono
  • Patent number: 7932976
    Abstract: A reflector for reflecting incident light from outside includes an insulating film being formed on a substrate and including multiple concavities and convexities, and a metal film formed on the insulating film. Respective convex portions constituting the multiple concavities and convexities are formed into shapes in which positions of peak portions relative to the entire convex portions are tilted in one direction when viewed from a direction of a normal line of the substrate.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: April 26, 2011
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Kenichirou Naka
  • Patent number: 7932979
    Abstract: A fabrication method of an LCD includes providing a substrate having a first region and a second region; forming a storage line in the first region and an active pattern in the second region of the substrate; forming a first insulation film on the substrate; forming a gate electrode and a pixel electrode on the substrate; forming a second insulation film on the substrate; and forming a source electrode and a drain electrode, the source electrode connected to a source region via a contact hole and the drain electrode connected to a drain region through the contact hole. The fabrication method may obtain a sufficient storage capacitance with a simplified process. The number of masks used for fabrication of a thin film transistor (TFT) may be reduced.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Joon Young Yang
  • Patent number: 7929083
    Abstract: A subject of the present invention is to prevent damage to a retardation film, etc. to improve the reliability in a liquid crystal display device including a retardation film on the side of the color filter substrate.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: April 19, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventor: Masahiro Teramoto
  • Patent number: 7929094
    Abstract: A liquid crystal display device 700 includes a pair of substrates, a vertical alignment type liquid crystal layer 490 provided between the pair of substrates, and electrodes 481 and 485 for applying a voltage to the vertical alignment type liquid crystal layer 490. At least one of the pair of substrates has a rugged structure on a surface which is in contact with the vertical alignment type liquid crystal layer. The surface having the rugged structure formed thereon has a region in which the height of the rugged structure varies along a first direction with a first period and varies along a second direction perpendicular to the first direction with a second period different from the first period. The first period is no less than 0.1 ?m and no more than 10 ?m, and the second period is no less than 0.1 ?m and no more than 10 ?m. The vertical alignment type liquid crystal layer 490 has a pretilt due to the rugged structure with no voltage applied thereacross.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: April 19, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tadashi Kawamura
  • Patent number: 7929093
    Abstract: A pixel structure including an active device and a pixel electrode is provided. The pixel electrode is electrically connected with the active device and has a plurality of alignment domains. Each of the alignment domains of the pixel electrode has one group of alignment slits parallel with one another, wherein each group of the alignment slits includes a plurality of first alignment slits with a first length and the first alignment slits are majority of each group of the alignment slits. At least one group of the alignment slits includes at least a second alignment slit with a second length longer than the first length of the first alignment slits.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 19, 2011
    Assignee: Au Optronics Corporation
    Inventors: Sung-Kao Liu, Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7929090
    Abstract: The invention relates to a liquid crystal display used as a display unit of an electronic apparatus and a method of manufacturing the same and provides a liquid crystal display which can achieve high display quality and a method of manufacturing the same. A liquid crystal including a polymeric component and having a specific resistance of 1×1013 ?·cm or more at room temperature (25° C.) is dispensed onto a TFT substrate. After combining the TFT substrate with an opposite substrate in vacuum, the atmospheric pressure is restored to fill a gap between the TFT substrate and the opposite substrate with the liquid crystal, thereby forming a liquid crystal layer. The polymeric component is polymerized while applying a predetermined voltage to the liquid crystal layer to form polymer layers.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: April 19, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Norio Sugiura, Satoshi Murata, Kengo Kanii, Shota Makimoto, Katsufumi Ohmuro
  • Patent number: 7924368
    Abstract: An optical assembly includes a light diffusing layer attached to a reflective polarizing layer. An intermediate region between the light diffusing layer and the reflective polarizing layer includes an intermediate structure that defines voids between the light diffusing layer and the reflective polarizing layer.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: April 12, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Ryan T. Fabick, Stephen J. Etzkorn, Mark D. Gehlsen
  • Patent number: 7924374
    Abstract: A display device including a light source and a pixelized color filter element is provided. The pixelized color filter element includes a plurality of first pixelized filters, a plurality of second pixelized filters and a plurality of third pixelized filters. The pixelized color filter element has a total reflectance higher than 5% in a wavelength range of 400 to 700 nm. At least one of the first pixelized filters, second pixelized filters and third pixelized filters includes a first layer and a second layer. The first material layer has a transmittance higher than 50% in a wavelength range of 400 to 700 nm. The second material layer has a transmittance higher than 50% in a wavelength range of 400 to 700 nm.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: April 12, 2011
    Inventor: Chih-Neng Chang
  • Patent number: 7924384
    Abstract: The present invention provides a liquid crystal display device which exhibits the excellent wide viewing angle characteristic and the high-speed responsiveness. A pixel region includes a switching element which is operated in response to a scanning signal from a gate signal line, a pixel electrode to which a video signal from a drain signal line is supplied through a switching element, and a counter electrode which generates an electric field between the counter electrode and the pixel electrode. The pixel region is constituted of divided respective regions.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: April 12, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa, Takahiro Ochiai, Hirotaka Imayama
  • Patent number: 7924387
    Abstract: A liquid crystal display has a pixel array including first and second pixel electrodes. Each of the first pixel electrodes is divided into at least two first sub-pixel electrodes in two pixel areas sharing a corner or an edge. Similarly, each of the second pixel electrodes is divided into at least two second sub-pixel electrodes in two pixel areas sharing a corner or an edge. The polarities of the first and the second electrodes are opposite. The first and the second pixel electrodes are arranged alternatively to allow at least one first sub-pixel electrode and at least a second sub-pixel electrode to be located in each pixel area.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: April 12, 2011
    Assignee: Au Optronics Corporation
    Inventor: Meng-Yi Hung
  • Patent number: 7924386
    Abstract: A liquid crystal display device includes a gate line on a substrate; a data line defining a pixel region by crossing the gate line; a thin film transistor formed at a crossing position between the gate line and the data line; a passivation layer protecting the thin film transistor; a pixel electrode connected with the thin film transistor; a common electrode generating an electric field with the pixel electrode; and a plurality of grooves on the passivation layer, wherein at least one of the pixel electrode and the common electrode is arranged at intervals in the pixel region, and the grooves are formed at intervals on the passivation layer disposed between the at least one of the pixel electrode and the common electrode arranged at intervals in the pixel region.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: April 12, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Sang Yeup Lee
  • Patent number: 7924392
    Abstract: An active matrix liquid crystal display having improved reliability. Pixel regions and a peripheral driver circuit are integrally packed on the display. TFTs forming the peripheral driver circuit are located inside a sealing material layer on the side of a liquid crystal material, thus protecting the peripheral driver circuit from external moisture and contaminants. This enhances the long-term reliability of the peripheral driver circuit. Pixel TFTs are arranged in pixel regions. The leads going from the TFTs forming the peripheral driver circuit to the pixel TFTs are shortened. This results in a reduction in the resistance. As a result, the display characteristics are improved.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: April 12, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Yuji Kawasaki, Toshimitsu Konuma, Satoshi Teramoto, Yoshiharu Hirakata
  • Patent number: 7924372
    Abstract: To provide a liquid crystal display device having excellent display quality and a substrate to be used for such liquid crystal display device. A liquid crystal display device is provided with a pair of substrates; a liquid crystal sealed between the substrates, CF resin layers formed in a display area on the substrate; and a structure for sustaining a cell gap between the substrates in the display area. The structure is provided with a resin spacer layer occupying 90% or more of the volume of an organic member constituting the structure.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: April 12, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Sawasaki, Takashi Takagi
  • Patent number: 7920229
    Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: April 5, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yasunori Onishi, Hisanori Kawakami, Taketoshi Masamoto
  • Patent number: 7920228
    Abstract: A dual liquid crystal display device includes a transmissive liquid crystal display panel; a reflective liquid crystal display panel formed on the same substrate as the transmissive liquid crystal display panel; a first light guide block disposed under the transmissive liquid crystal display panel and having dot patterns formed on a first surface thereof; a second light guide block disposed under the reflective liquid crystal display panel and having V-grooves formed on a first surface thereof and dot pattern formed on a second surface thereof; a light source disposed adjacent to the first light guide block; and a housing in which the transmissive and reflective liquid crystal display panels, the light source and the light guide blocks are seated, the housing having an opening to correspond to an image display surface of the reflective liquid crystal display panel.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: April 5, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, Hwal Choi, David Lee
  • Patent number: 7920243
    Abstract: A color filter substrate includes a transparent substrate, a light-blocking layer, a color filter layer, a first cell gap maintaining member and a second cell gap maintaining member. The transparent substrate has a plurality of pixel regions. Each of the pixel regions includes first and second regions. The light-blocking layer is disposed over the transparent substrate. The light-blocking layer blocks light that leaks through boundaries of the pixel regions. The color filter layer is disposed over the transparent substrate. The color filter layer has a first thickness at the first region and a second thickness that is smaller than the first thickness at the second region. The first cell gap maintaining member is disposed at the first region. The second cell gap maintaining member is disposed at the second region. Therefore, a height difference between the main column spacer and the sub column spacer may be easily adjusted.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Ho Lee, Kye-Hun Lee, Kweon-Sam Hong, Bae-Heuk Yim
  • Patent number: 7920238
    Abstract: A liquid crystal display apparatus includes a first polarizer located on one side of a first substrate, a second polarizer located on the opposite side of a second substrate, a liquid crystal layer formed of liquid crystal molecules and between the first and the second substrates so that the liquid crystal molecules may be aligned in parallel to the first or the second substrate and to which an electric field is applied in parallel to the first substrate, and a lighting device. The first or the second polarizer includes a polarization layer and supporting materials located on both sides of the polarization layer, reducing light leakage and a colour shift in a black display state when viewed from the oblique direction.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: April 5, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Daisuke Kajita, Ikuo Hiyama, Mutsumi Maehara, Yuka Utsumi
  • Patent number: 7916222
    Abstract: The stereoscopic display device includes a display unit including a first pixel group for displaying a first image and a second pixel group for displaying the second image, a barrier having transparent regions and opaque regions such that the first image and the second image are observed through the transparent regions at different points and a light source for supplying light to the display unit. The light source has the different brightness between the first mode and the second mode.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 29, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Hyoung-Wook Jang, Jang-Doo Lee, Hui Nam, Beom-Shik Kim, Myoung-Seop Song