Patents Examined by Julie Ngo
  • Patent number: 7570336
    Abstract: The present invention discloses a display device having a gate line and a data line crossing each other on a substrate to define a pixel region, a thin film transistor at each crossing of the gate line and data line, a pixel electrode about a circumference of the pixel region and having an opening at a central portion of the pixel region, the pixel electrode electrically connected to the thin film transistor, a piezoelectric lead lanthanum zirconate titanates (PLZT) layer in the opening of the pixel region, and a piezoelectric lead zirconate titanates (PZT) layer between the pixel electrode and the PLZT layer.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 4, 2009
    Assignee: LG Display Co., Ltd.
    Inventor: Tae Young Oh
  • Patent number: 7570333
    Abstract: A liquid crystal display (LCD) device comprises a first substrate having a grooved surface profile; an alignment film layer of inorganic material formed on the grooved surface and having the grooved surface profile, the alignment film of inorganic material being aligned in response to an ion beam incident to the grooved surface in a direction parallel to a groove direction; a second substrate aligned opposite the first substrate for forming a plurality of LCD cells having liquid crystal (LC) material deposited therein, wherein LC molecules align parallel to the grooves for enhanced LCD performance.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 4, 2009
    Assignee: International Business Machines Corporation
    Inventors: Minhua Lu, Kei-Hsiung Yang
  • Patent number: 7570331
    Abstract: A liquid crystal display including two alignment substrates having a base material, an electrode layer and alignment layer, with a ferroelectric liquid crystal interposed therebetween. One of the two alignment layers for controlling the alignment of the ferroelectric liquid crystal has a column structure with plate-like molecules having the photo dichroism in the visible light range laminated with the normal directions of the plate-like molecules oriented in a certain direction, and it is provided a columnar alignment layer having the alignment function and the polarizing function.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: August 4, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masato Okabe, Naoko Sawatari, Makoto Ishikawa
  • Patent number: 7567320
    Abstract: A liquid-crystal electro-optical device is offered which can operate at high speeds and easily oriented. The value of the surface tension of liquid crystal-orienting layers is 40 dynes/cm or more, and these layers are rubbed in antiparallel directions to each other. This reduces the pretilt angle of the molecules of a nematic liquid crystal sandwiched between two substrates. The anisotropy of the dielectric constant of the nematic liquid crystal is positive.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: July 28, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Toshimitsu Konuma
  • Patent number: 7567333
    Abstract: A color filter substrate for a liquid crystal display device includes a substrate having a plurality of pixel regions, a black matrix array having a lattice configuration on the substrate, the black matrix array corresponding to boundary regions between adjacent ones of the pixel regions, a plurality of color filter layers, each corresponding to one of the pixel regions, and a column spacer array having a lattice configuration, the column spacer array corresponding to the black matrix array.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: July 28, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Hoon Lee, Il-Man Choi
  • Patent number: 7567337
    Abstract: A liquid crystal lens comprises a first liquid crystal lens part. The first liquid crystal part comprises first and second flat parallel substrates and a liquid crystal filled between said first and second light-transmitting regions. First and second electrodes are provided on said first and second substrates, respectively, to apply a voltage across the first liquid crystal. An electric heating element is provided on said first substrate to heat said first liquid crystal.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: July 28, 2009
    Assignee: Citizen Electronics Co., Ltd
    Inventors: Megumi Horiuchi, Toshiro Yukinari
  • Patent number: 7557895
    Abstract: A method of manufacturing a liquid crystal display device includes preparing a pair of substrates that have a structure P1 having a height Hp1 and a structure P2 having a height Hp2, the heights Hp1 and Hp2 satisfying a relationship of 0.3 (?m) ?Hp1?Hp2?1.0 (?m); controlling a dropping amount V of liquid crystal so that a cell gap G1 that is determined by the dropping amount V of liquid crystal, the height Hp1 and the height Hp2 satisfying a relationship of Hp2<G1<Hp1; dropping the controlled dropping amount V of liquid crystal on one of the pair of substrates; and attaching the pair of substrates in a vacuum followed by returning to an atmospheric pressure to fill in the liquid crystal between the pair of substrates.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: July 7, 2009
    Assignees: Fujitsu Limited, Au Optronics Corporation
    Inventors: Manabu Sawasaki, Yoji Taniguchi, Takashi Takagi
  • Patent number: 7554620
    Abstract: An ESD structure in an LCD module mounting structure in a terminal for mounting an LCD module on the inner surface of a case frame to be exposed through an opening of a predetermined size formed on the case frame. In the ESD structure, an EMI shielding is formed to be electrically connected to a main board of the terminal and grounded by coating EMI spray all over the inner surface of the case frame including a part of an overlap between the inner surface of the case frame and the LCD module. At least one through hole penetrates from the inner surface to the outer surface of the case frame at an appropriate portion of the overlap. Conductive means electrically connects the inner surface of the through hole to the EMI shielding. Therefore, externally introduced static electricity is actively grounded inside the terminal along the through hole.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: June 30, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soo-Hyung Kim, Young-Tack Cho, Young-Min Kang, Seung-Bae Pyon
  • Patent number: 7538831
    Abstract: A touch panel includes a light-transmissible upper board, an upper resistor layer on a lower surface of the upper board, a light-transmissible lower board, a lower resistor layer provided on an upper surface of the lower board and facing the upper resistor layer with a predetermined distance, a spacer having a substantial frame shape between an outer periphery of the lower surface of the upper board and an outer periphery of the upper surface of the lower board, upper electrodes extending from both ends of the upper resistor layer, lower electrodes extending from both ends of the lower resistor layer, a wiring board, and wiring patterns on the wiring board. The spacer has a cutout portion provided therein. The upper and lower electrodes have portions located at the cutout portion of the spacer. The wiring board has an end located at the cutout portion. The wiring patterns are connected to the portions of the upper electrodes and the portions of the lower electrodes, respectively.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: May 26, 2009
    Assignee: Panasonic Corporation
    Inventors: Akira Nakanishi, Shigeyuki Fujii
  • Patent number: 7535543
    Abstract: A liquid crystal display device constrains the injection of air bubbles in a cooling fluid into a display panel. In the display device, the cooling fluid is supplied to a receiving space of a receiving unit placed and opposed to a surface of a liquid crystal panel to which the light is emitted from a light source to thereby cool the liquid crystal panel. Namely, by a cooling fluid pump, the cooling fluid received in the receiving unit is drained from a drain port and the cooling fluid is supplied from a feed port to the receiving unit and received in the receiving space. In the above case, a part of a flow path of the cooling fluid supplied from the feed port is blocked by a flow path block unit placed and opposed to the feed port to thereby disperse the flow thereof around the flow path block unit.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: May 19, 2009
    Assignee: Sony Corporation
    Inventors: Shigekuni Dewa, Masashi Yamada, Takuji Ohkubo, Takashi Nasu
  • Patent number: 7535536
    Abstract: A display device includes a substrate, a gate line formed over the substrate, a first insulating film formed over the substrate and the gate line, a semiconductor film formed over the first insulating film, a drain electrode formed over the semiconductor film, a source electrode formed over the semiconductor film, a data line connected to the drain electrode and formed over the first insulating film, a second insulating film formed over the source electrode and the data line, a pixel electrode electrically connected to the source electrode and formed over the second insulating film, and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film. The transparent conductive film includes a first portion which none of the first insulating film and the second insulating film underlie.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: May 19, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • Patent number: 7532265
    Abstract: An integrated circuit with the cell test function for the electrostatic discharge (ESD) protection, wherein each ESD unit protection circuit has a first, second, and third thin film transistors (TFTs) composed and connected to a signal line, a fourth TFT's and a fifth TFT's gate and drain electrodes are also shorted at the common electrode and the source electrode of the third TFT connects to the common electrode. A sixth TFT's drain electrode connects to the source electrode of the fourth TFT and the source electrode of the fifth TFT connects to the gate electrode of the sixth TFT. By the gate and drain electrodes of the sixth TFT connecting to the corresponding test-switch pads respectively, the sixth TFT is used as a TFT switch so as to build the cell test function in the ESD unit protection circuit.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: May 12, 2009
    Assignee: Wintek Corporation
    Inventors: Ja-Fu Tsai, Wen-Chun Wang
  • Patent number: 7528917
    Abstract: A liquid crystal display device includes gate lines crossing data lines on a first substrate defining a pixel region; at least one common electrode formed in the pixel region; at least one pixel electrode in the pixel region, the at least one pixel electrode corresponding to the common electrode; a color filter layer formed within the pixel region excluding the gate line and the data line; a black matrix having at least three layers, an inner layer of the at least three layers being an electrode material.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: May 5, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Guk Kim, Seung-Ryull Park
  • Patent number: 7525624
    Abstract: A liquid crystal display device includes first and second substrates facing each other; a liquid crystal material between the first and second substrates; gate and data lines crossing each other on the first substrate to define a pixel region; a thin film transistor adjacent to the crossing of the gate and data lines; a color filter pattern in the pixel region; a first passivation layer on the color filter pattern, the first passivation layer made of an inorganic insulating material; and a pixel electrode on the first passivation layer and electrically connected to the thin film transistor.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: April 28, 2009
    Assignee: LG Display Co., Ltd.
    Inventor: Se-June Kim
  • Patent number: 7525621
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: April 28, 2009
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: 7522248
    Abstract: A thin film transistor array substrate is provided. A plurality of shield lines are disposed between the lead lines in a peripheral circuit region of the substrate. A connecting line connected to the shield lines is also disposed in peripheral circuit region of the substrate. The shield lines and the connecting line are formed of a metal layer so that light leakage between the lead lines of a source/drain layer or a gate layer is reduced. Furthermore, the line widths in the connecting portions of the shield lines connected to the connecting lines are smaller than the distance between the lead lines. Therefore, if a short happens between the lead lines and the shield lines, repair may be performed by cutting the connection portions between the shield lines and the connecting lines.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: April 21, 2009
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Han-Tung Hsu, Hui-Chung Shen
  • Patent number: 7522245
    Abstract: The present invention relates to an in-plane switching mode LCD, in which data electrodes and common electrodes in a unit pixel have the same light transmitting area to reduce the luminance difference according to positive or negative polarity of an applied DC voltage. The in-plane switching mode LCD comprises a first substrate: a plurality of data lines on the first substrate; data electrodes and common electrodes alternately formed in an unit pixel area, the data electrodes having a first transmittance area and the common electrodes having a second transmittance area, wherein the first transmittance area equals the second transmittance area; and a shielding layer formed under outer most ones of the common electrodes, and wherein at least one of the data electrodes has a first width, and at least one of the common electrodes has a second width, the second width being greater than the first width.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: April 21, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Gi Hong Kim, Yun Bok Lee
  • Patent number: 7518689
    Abstract: A vertically aligned type liquid crystal display includes a liquid crystal layer disposed between pixel electrodes and a common electrode and containing vertically aligned liquid crystal molecules, the orientation of the liquid crystal molecules being controlled by an electric field. An orientation controller is formed on the common electrode at a position opposing the pixel electrode and an aspect ratio, i.e., a vertical to horizontal length ratio of the pixel electrode is set to at least 2. Alternatively, the pixel electrode is partitioned into at least two electrode regions so that each region represents a divided pixel electrode. An orientation controller is formed on the common-electrode so as to correspond to each divided pixel electrode, an aspect ratio of each divided pixel electrode is set to at least 2. As such, the influence at the edge sections of the pixel electrode is reduced, viewing angle characteristic and transmittance are improved, and average response time is shortened.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: April 14, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Norio Koma
  • Patent number: 7515233
    Abstract: “A liquid crystal display of the present invention comprises a first substrate, a second substrate and a liquid crystal layer injected there between. The first substrate has first base plate, a gate line formed on the first base plate, a data line formed over the gate line, a switching element electrically connected to the gate line and the data line, a pixel electrode electrically connected to the switching element, an element dividing LC domains formed on the pixel electrode, first alignment layer formed on the domain dividing element. The second substrate comprises second base plate, a common electrode formed on the second base plate, a first protrusion and a second protrusion formed on the common electrode. The first protrusion and the second protrusion have different heights. A second alignment layer is formed on the protrusions.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 7, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Soo Kim, Min-Hyung Choo
  • Patent number: 7515220
    Abstract: A display device including a display panel displaying an image; a light source unit supplying light to the display panel, and a light guiding unit including a light guiding section which has a light receiving surface positioned adjacent to the light source unit and a light emitting surface positioned opposite to the display panel and which guides light emitted from the light source unit to the display panel, a side wall section forming a reception space for receiving the display panel along the edges of the light guiding section, and a fixing section fixing the light guiding section to the display device.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: April 7, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-Seok Ko, Soo-Jin Kim, Dong-Ho Lee