Patents Examined by Dennis Y Kim
  • Substrate for a display device and method of manufacturing the same
    Patent number: 8520158
    Abstract: A mother substrate for a display device includes a display cell, a test pad, an electrostatic preventing pattern and a connecting line. The display cell includes a pad and a signal line. The signal line is extended from the pad and is electrically connected to a pixel. The test pad is disposed out of the display cell and is electrically connected to the signal line of the display cell and receives a test signal. The electrostatic preventing pattern electrically connected to the test pad is disposed adjacent to the test pad and includes a plurality of edges. The electrostatic preventing pattern is formed from a metal pattern. The connecting line is extended from the electrostatic preventing pattern and is electrically connected to the pad of the display cell.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 27, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mi-Sun Lee, Shin-Tack Kang
  • Alignment material, alignment layer, liquid crystal display device and manufacturing method thereof
    Patent number: 8514357
    Abstract: A liquid crystal display device and a method for manufacturing the same are disclosed. In an embodiment of the present invention, a liquid crystal display device and a method of manufacturing the liquid crystal display device includes a first substrate that has a first electrode formed thereon, a second substrate that faces the first substrate, a liquid crystal layer that is formed between the first substrate and the second substrate, and a first alignment layer that is formed on the first substrate and is in contact with the liquid crystal layer. Here, the first alignment layer includes a first alignment base layer that is photoaligned, and a first alignment controlling layer that is extended from the inside of the first alignment base layer.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jae-Hoon Kim
  • Polarizing plate and display apparatus having the same
    Patent number: 8508696
    Abstract: A display apparatus comprises a display panel, a first polarizing plate and a second polarizing plate. The display panel comprises a first substrate including a pixel electrode, a second substrate opposite to the first substrate, and a liquid crystal layer disposed between a first surface of the first substrate and a first surface of the second substrate. The first polarizing plate comprises a first polarizer having a first polarizing axis, and a first ?/4 phase difference plate having a refractive index between about 1.35 and about 2.05 in a thickness direction. The second polarizing plate comprises a second polarizer having a second polarizing axis crossing the first polarizing axis, and a second ?/4 phase difference plate having a refractive index between about 1.35 and about 2.05 in a thickness direction. Accordingly, light leakage in a side view may be reduced and viewing angle may be improved.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Hyun Kim, Ki-Chul Shin, Seung-Hee Lee, Ji-Hoon Kim, Sang-Jae Kim
  • Color cholesteric liquid crystal display devices and fabrication methods thereof
    Patent number: 8502952
    Abstract: Color cholesteric liquid crystal display devices and fabrication methods thereof are provided. The color cholesteric liquid crystal display device includes a first substrate, a second substrate and a gap interposed therebetween. A patterned enclosed structure, formed by adhering a first patterned enclosed structure on the first substrate and a second patterned enclosed structure on the second substrate, is interposed between the first substrate and the second substrate, dividing a plurality of color sub-pixel channels. A plurality of the color cholesteric liquid crystals are respectively filled into each of the color sub-pixel channel, wherein the first patterned enclosed structure is tightly adhered to the second patterned enclosed structure so as to prevent mixing of the color cholesteric liquid crystals between adjacent color sub-pixel channels.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: August 6, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Yuan-Chang Liao, Yu-Cheng Lai, Yi-Shou Tsai, Kuan-Wei Wu
  • LCDS with integrated touch panels
    Patent number: 8493518
    Abstract: An LCD with an integrated touch panel that prevents sensor malfunction by eliminating coupling noises includes an insulating substrate, a plurality of gate lines formed on the insulating substrate so as to extend in a first direction, a plurality of data lines formed in a second direction so as to intersect the plurality of gate lines, a plurality of thin film transistors (TFTs), each formed at an area defined by the gate lines and the data lines, a plurality of sensor lines formed in the same directions as the gate lines and the data lines, and a plurality of dummy lines formed in the same directions as the sensor lines.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: July 23, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seung-hwan Moon
  • Liquid crystal display panel
    Patent number: 8488095
    Abstract: The present invention discloses a liquid crystal display panel, including an array substrate; a color filter substrate; and primary post spacers and secondary post spacers disposed between the array substrate and the color filter substrate, wherein the color filter substrate is divided into a side portion and a central portion inside the side portion, and the density of the secondary post spacers in the central portion is less than that in the side portion.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: July 16, 2013
    Assignee: Bejing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Haiyu Zhao
  • Liquid crystal display panel
    Patent number: 8482685
    Abstract: In a liquid crystal display panel, an array substrate includes a plurality of pixels that each having a switching device, a first pixel electrode, a coupling electrode, and a second pixel electrode. The switching device outputs a data voltage in response to a gate signal, and the first pixel electrode and the coupling electrode are connected to an output electrode of the switching device to receive the data voltage. The second pixel electrode faces the coupling electrode and receives a voltage lower than the data voltage. The resistance between the second pixel electrode and the coupling electrode is less than the resistance between the second pixel electrode and the common electrode.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kyung-Wook Kim
  • Liquid crystal display device
    Patent number: 8477274
    Abstract: Disclosed is a liquid-crystal display device comprising a liquid-crystal cell comprising a liquid-crystal layer that aligns vertically to the substrate thereof in a black state, two polarizing elements that are disposed to sandwich the liquid-crystal cell therebetween in a manner that their absorption axes are perpendicular to each other, and retardation films having equivalent optical anisotropy that are disposed between each of the two polarizing elements and the liquid-crystal cell, wherein the retardation films comprise a cellulose acylate and a liquid-crystal compound, and satisfy 30 nm?Re(550)?80 nm, 70 nm?Rth(550)?140 nm, Re(450)/Re(550)<1 and Re(650)/Re(550)>1.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 2, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Hajime Nakayama, Nobutaka Fukagawa, Hirofumi Toyama, Yujiro Yanai, Yoshiaki Hisakado
  • Light guides
    Patent number: 8467013
    Abstract: This invention relates to a light guide device and methods of manufacture. The light guide device is suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays. The light guide device comprises a combination of guide layers and one or more scattering structures in order to mask the appearance of one or more light sources.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: June 18, 2013
    Assignee: ITI Scotland Limited
    Inventor: James Gourlay
  • Liquid crystal optical element and optical pickup apparatus
    Patent number: 8451421
    Abstract: The present invention is directed to the provision of an optical pickup apparatus in which a liquid crystal optical element constructed by combining an aberration correcting liquid crystal panel and an n?/4 liquid crystal panel in an integral fashion is mounted in a tilted position.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: May 28, 2013
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Shuji Naka, Shinya Sato
  • Stereoscopic display
    Patent number: 8436953
    Abstract: A stereoscopic display includes: a display panel configured to display an image in either one of two or more arrangement states including a first arrangement state and a second arrangement state which are switchable with each other; and a lens array device arranged to face a display surface of the display panel. The lens array device produces a lens effect in a direction, the direction of effect being changed between in the first arrangement state and in the second arrangement state. The display panel includes an array of a plurality of sub-pixels, and a combination of sub-pixels used as a unit pixel is changed between in the first arrangement state and in the second arrangement state.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: May 7, 2013
    Assignee: Sony Corporation
    Inventors: Sho Sakamoto, Kenichi Takahashi, Koji Ishioka, Masayoshi Akita
  • Method of driving liquid crystal display device, and liquid crystal display device
    Patent number: 8436954
    Abstract: A method of the present invention, for driving a liquid crystal display device includes the step of applying, when spray-bend transition of liquid crystal molecules is completed, a constant voltage to a storage capacitor electrode so that an electric potential difference between a pixel electrode and a common electrode becomes greater than an electric potential difference between the pixel electrode and another pixel electrode adjacent to said pixel electrode when application of a voltage for the spray-bend transition of the liquid crystal molecules is stopped.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: May 7, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Katayama, Masahiro Shimizu
  • Liquid crystal display device and light detector having first and second TFT ambient light photo-sensors alternatively arranged on the same row
    Patent number: 8432510
    Abstract: Provided is a liquid crystal display device including: a liquid crystal display panel; a light detector which is mounted on the liquid crystal display panel and has a plurality of TFT ambient light photo-sensors composed of thin-film transistors (TFTs) for detecting external light; an illumination unit which illuminates light on the liquid crystal display panel; a detection circuit connected to the light detector; and a control unit which controls the brightness of the illumination unit on the basis of the output of the detection circuit, wherein the plurality of TFT ambient light photo-sensors include first and second TFT ambient light photo-sensors for detecting lights of different systems, and, among source wires or drain wires of the first TFT ambient light photo-sensors and the second TFT ambient light photo-sensors, wires which are not connected to the detection circuit are formed by a single wire.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: April 30, 2013
    Assignee: Sony Corporation
    Inventors: Masahiro Horiguchi, Takashi Kunimori
  • Electro-optical device and electronic apparatus including the same
    Patent number: 8432526
    Abstract: An electro-optical device includes a pair of substrates, an electro-optical material sandwiched between the pair of substrates, an electrode on one of the pair of substrates, an inorganic alignment layer disposed on the one of the pair of substrates, and a heat-dissipating layer disposed between the electrode and the inorganic alignment layer on the one of the pair of substrates.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: April 30, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Takaaki Tanaka
  • Liquid crystal display unit
    Patent number: 8427619
    Abstract: A liquid crystal display unit has: a pair of opposing substrates; an electrode pattern formed on each of the substrates on an opposing surface side; a vertical alignment film formed on each of the substrates and covering the electrode pattern; a liquid crystal layer squeezed between the substrates; and a pair of polarizer plates formed on the substrates on an opposite side to the side of said liquid crystal layer, wherein an edge of the electrode pattern includes a zigzag pattern parallel to one of axis directions of the polarizer plates and a direction perpendicular the axis direction. Optical through can be reduced along an edge portion of a pixel of a vertical alignment LCD.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: April 23, 2013
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Masatoshi Horii, Takashi Sugiyama, Yoshihisa Iwamoto, Keiichi Hirata
  • Liquid crystal display apparatus and electronic apparatus
    Patent number: 8421968
    Abstract: Disclosed herein is a liquid crystal display apparatus in which a transmission region and a reflection region disposed in parallel. The apparatus includes first and second substrates and a liquid crystal layer disposed between the first and second substrates. The second substrate has at least a counter electrode, an interlayer insulating film and a pixel electrode for forming a fringe field for driving molecules of the liquid crystal. At least one parameter relating to the interlayer insulating film formed on the second substrate is set different between the transmission region side interlayer insulating film and the reflection region side interlayer insulating film so that driving voltages for the transmission and reflection regions are substantially equal to each other.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: April 16, 2013
    Assignee: Sony Corporation
    Inventor: Masumitsu Ino
  • Liquid crystal display device
    Patent number: 8421973
    Abstract: A sealant contains a plurality of conductive members, and is formed in a closed pattern, when viewed from a direction normal to a surface of a first substrate or a second substrate. A second electrode is formed on a surface located on the first substrate side of the second substrate, and a first electrode, which is provided so as to face a part of the second electrode, and is electrically connected to the second electrode through the conductive members contained in the sealant, is formed over the first substrate. The first electrode is provided so as to at least partially overlap a crossing portion of the sealant.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yohsuke Fujikawa
  • Liquid crystal lens
    Patent number: 8421989
    Abstract: A liquid crystal lens including a plurality of electrodes and a substrate is provided. A plurality of parallel electric fields is formed by controlling the potentials of the electrodes, so as to speed up the mechanism for toppling the liquid crystal molecules. In other words, the liquid crystal lens has a high respond time. In addition, a plurality of active devices is disposed at the sides of the electrodes in the liquid crystal lens, in which the active devices are electrically connected to the electrodes. When the active devices are driven, a current is formed on the electrodes, so as to raise the temperature of the liquid crystal lens. Accordingly, the liquid crystal lens can be operated in a low temperature environment.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: April 16, 2013
    Assignee: Silicon Touch Technology Inc.
    Inventors: Chi-Lone Chang, Chi-Yuan Chin
  • Liquid crystal display device
    Patent number: 8421972
    Abstract: There is provided a liquid crystal display device of high picture quality with high brightness and small display unevenness. A vertical alignment type liquid crystal display device which has a plurality of pixels includes: a first electrode which includes, in each of the plurality of pixels, a plurality of first branch portions extending in a first direction and a plurality of second branch portions extending in a second direction that is different from the first direction; a second electrode disposed so as to oppose the first electrode; and a liquid crystal layer interposed between the first electrode and the second electrode, wherein a width of each of the plurality of first branch portions and the plurality of second branch portions is in a range not less than 1.4 ?m and not more than 8.0 ?m.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Ohgami, Yoshito Hashimoto, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo, Masayuki Soga
  • Wide viewing angle liquid crystal display comprising at least one floating electrode in locations facing corresponding one or more pixel electrodes with liquid crystal layer therebetween
    Patent number: RE44167
    Abstract: A liquid crystal display (LCD) device. In one embodiment, the LCD device includes a first substrate and a second substrate positioned apart from the first substrate, a liquid crystal layer positioned between the first substrate and the second substrate, and a plurality of pixels. Each pixel includes two or more first common electrodes and one or more pixel electrodes formed on the first substrate, where each of the one or more pixel electrodes is located between two of the two or more first common electrodes. Each pixel further includes one or more floating electrodes and/or two or more second electrodes formed on the second substrate in locations opposite corresponding ones of the one or more pixel electrodes and the two or more first common electrodes on the first substrate.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: April 23, 2013
    Assignee: Au Optronics Corporation
    Inventor: Seok-Lyul Lee