Patents Examined by Julie-Huyen L. Ngo
  • Patent number: 8023067
    Abstract: A liquid crystal display device that reduces manufacturing cost, contributes to a thin profile, and generates uniform brightness, and a fabricating method thereof are disclosed. In the liquid crystal display device, a liquid crystal display panel is prepared. A backlight includes a plurality of lamps, a diffusion plate which is located on the lamps, and an intermediate diffusion medium located between the lamps and the diffusion plate to diffuse light from the lamps, and irradiates light to the liquid crystal display panel. Furthermore, in the method of fabricating the liquid crystal display device, a diffusion material is molded using a mold to form an intermediate diffusion medium that includes a plurality of ribs connected to an external band of square type and both sides of the external band of square type, respectively. The intermediate diffusion medium is located between lamps and a diffusion plate.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: September 20, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Min Moon, Eun Ju Kim
  • Patent number: 8018560
    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: July 31, 2009
    Date of Patent: September 13, 2011
    Assignee: International Business Machines Corporation
    Inventors: Minhua Lu, Ke-Hsiung Yang
  • Patent number: 8013958
    Abstract: A liquid crystal device which has a first and second electrodes formed on a second substrate and which controls allows alignment of liquid crystal molecules by an electric field generated between the first and second electrodes, wherein the liquid crystal molecules in the liquid crystal layer are aligned in a first direction in a plane of the substrate, wherein a phase difference layer having molecules, which are inclined in the plane of the first or second substrate and are aligned in directions different from one another in the transmissive display portion and the reflective display portion, is formed on a surface of the first or second substrate opposed to the liquid crystal layer, and wherein a director of the molecules of the phase difference layer is aligned in a second direction parallel to the first direction at least in the plane of the transmissive display portion, wherein an angle formed by the alignment direction of the molecules of the phase difference layer in the transmissive display portion an
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: September 6, 2011
    Assignee: Sony Corporation
    Inventor: Hayato Kurasawa
  • Patent number: 8009251
    Abstract: The LCD sequentially includes, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate includes multiple transparent areas thereon. The first substrate includes multiple light-focusing arrays. Each of the light-focusing arrays includes multiple high-refractive areas and low-refractive areas disposed between the high-refractive areas. The multiple high-refractive areas includes a first high-refractive area and multiple second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: August 30, 2011
    Assignee: Au Optronics Corporation
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 7982828
    Abstract: The present invention provides a polarization switching liquid crystal element 1 having TN liquid crystal 7 retained between two transparent substrates 2a and 2b for transmitting at least visible polarized light with the polarized light transmission axis selectively rotated by 90 degrees when a voltage is selectively applied to the TN liquid crystal 7, wherein a phase difference u of said TN liquid crystal 7 is defined by the following equation: u=2×?n×d/?, where ?n is the refractive index anisotropy of said TN liquid crystal 7, d is the thickness of said TN liquid crystal 7, and ? is the wavelength of said polarized light, and a transmittance T of said polarization switching liquid crystal element measured with polarization plates on the incident and outgoing sides is defined by the following equation: T=(½)×sin2{?(1+u2)1/2/2}/(1+u2), and wherein the phase difference u includes a value 1.7 and the transmittance T is 0.1 or lower when the ? ranges from 400 nm to 700 nm.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: July 19, 2011
    Assignee: Olympus Corporation
    Inventor: Kazuya Yamanaka
  • Patent number: 7978300
    Abstract: In the liquid crystal display device and the method of manufacturing the same, the pixel electrodes 32 and the projection pattern 35 are formed on the TFT substrate 30 side, and surfaces of the pixel electrodes 32 and the projection pattern 35 are covered with the vertical alignment film 36. Also, the opposing electrode 44 and the projection pattern 45 are formed on the CF substrate 40 side, and surfaces of the opposing electrode 44 and the projection pattern 45 are covered with the vertical alignment film 46. Then, the TFT substrate 30 and the CF substrate 40 are arranged such that top end portions of the projection pattern 45 on the CF substrate 40 are brought into contact with the TFT substrate 30. Then, the liquid crystal 49 having the negative dielectric anisotropy is sealed between them. Accordingly, the step of scattering the spacers can be omitted, change in the cell thickness can be prevented, and the good display quality can be achieved.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: July 12, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiro Ikeda, Manabu Sawasaki, Yoji Taniguchi, Hiroyasu Inoue, Tomonori Tanose, Yoshinori Tanaka
  • Patent number: 7973885
    Abstract: Disclosed is a display substrate including a pixel electrode and a thin film transistor formed thereon. The thin film transistor includes a gate electrode, a source electrode, and a drain electrode, and the pixel electrode is formed by extending the drain electrode thereby reducing the required number of process steps and photo masks.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: July 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Han Bae, Hyung-Il Jeon
  • Patent number: 7969535
    Abstract: A pixel unit having a display area is provided. The pixel unit includes a first substrate, a second substrate, a liquid crystal layer, and at least one ultraviolet light (UV) absorption pattern. The second substrate is disposed in parallel to the first substrate, and the liquid crystal layer is disposed between the first substrate and the second substrate. The UV absorption pattern is disposed between the first substrate and the second substrate. A part of the display area overlaps the UV absorption pattern to define at least one first alignment area, while the part of the display area which does not overlap the UV absorption pattern defines at least one second alignment area. The liquid crystal molecules of the liquid crystal layer present different pre-tilt angles in the first alignment area and the second alignment area.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: June 28, 2011
    Assignee: Au Optronics Corporation
    Inventors: Chung-Hsiang Chiu, Ching-Huan Lin, Sung-Kao Liu, Yue-Shih Jeng
  • Patent number: 7956966
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 7, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park
  • Patent number: 7948595
    Abstract: The invention discloses a liquid crystal display panel, comprising pixel electrodes, common electrode lines, data lines and scanning lines, wherein at least two of the scanning lines are electrically connected to each other. The liquid crystal display panel has a plurality of conductive sections are disposed above at least part of each of the scanning lines other than said at least two scanning lines and electrically connected to the common electrode lines. The liquid crystal display panel of the invention can use Dot Inversion Driving with low power consumption. Meanwhile, the invention improves consistency of the RC delays on the individual scanning lines, decreases the difference among the RC delays of scanning signals on all of the scanning lines, and thereby achieves uniformity of a display frame on the liquid crystal display panel.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: May 24, 2011
    Assignee: Infovision Optoelectronics (Kunshan) Co., Ltd.
    Inventors: Te-Chen Chung, Tean-Sen Jen
  • Patent number: 7948574
    Abstract: An exemplary bezel includes two generally L-shaped bezel parts and two generally I-shaped bezel parts. All the bezel parts are joined end-to-end to cooperatively define a window therebetween, and this assembly is configured to accommodate a display panel. A minimum area of a rectangular region that can be occupied by the two generally L-shaped bezel parts alone includes a central unoccupied portion sufficient in size to accommodate the two generally I-shaped bezel parts.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: May 24, 2011
    Assignees: Innocom Technology (ShenZhen) Co., Ltd., Chimei Innolux Corporation
    Inventors: I-Fee Chen, Rui-Ting Zheng, Xiao-Ming Cao, Chung-Shen Tang
  • Patent number: 7936414
    Abstract: An exemplary liquid crystal display includes a liquid crystal panel, and a one-piece frame accommodating the liquid crystal panel. The frame includes a plurality of side walls arranged end to end, a supporting board extending inward from inner surfaces of the side walls, and at least two liquid crystal panel fixing members. The supporting board abuts the liquid crystal panel. The at least two liquid crystal panel fixing members press at least one respective lateral side of the liquid crystal panel such that the liquid crystal panel is pressed slightly toward the supporting board.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: May 3, 2011
    Assignee: Chimei Innolux Corporation
    Inventors: Chih-Chung Hsiao, Ping-Shan Ko
  • Patent number: 7932974
    Abstract: The present invention is a liquid crystal panel substrate that comprises: pixel units each having a pixel electrode, to be used as a reflective electrode and arranged in a matrix pattern on a substrate, and a switching element controlling a voltage applied to the pixel electrode; wherein between the pixel electrode and a conductive layer forming a terminal electrode of the switching element, a contact hole is provided for connecting the pixel electrode and the terminal electrode. A light-shielding layer, having an opening surrounding the portion in which the contact hole is formed, and having no opening in regions between a plurality of adjacent pixel electrodes, is formed between the pixel electrode and the conductive layer. Harmful effects due to light leaking through a space between the pixel electrodes can thereby be prevented.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: April 26, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Masahiro Yasukawa
  • Patent number: 7929072
    Abstract: An object of the present invention is to reduce the exterior of a display device while retaining a display screen at a certain size. A liquid crystal display panel including a TFT substrate formed with a glass substrate and a color filter substrate is stored in a frame made of a metal. In order to avoid the direct contact between the glass substrate and the frame made of a metal, part of an optical sheet included in a backlight disposed behind the liquid crystal display panel is extended to lie between the liquid crystal display panel and the frame, and is regarded as a spacer. Since the thickness of the optical sheet is as small as 0.06 mm, the spacer hardly affects the external dimensions of a display device. Consequently, while a crack of the glass substrate is prevented, the exterior of the display device can be reduced.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 19, 2011
    Assignee: Hitachi Displays. Ltd.
    Inventor: Eiji Oohira
  • Patent number: 7916264
    Abstract: An exemplary liquid crystal display device (2) includes a liquid crystal panel (21) and a heating system. The heating system heats the liquid crystal panel when the temperature of the liquid crystal panel is below a predetermined threshold temperature. The liquid crystal display device can work normally without being adversely influenced by the surrounding temperature.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: March 29, 2011
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimel Innolux Corporation
    Inventors: Xin-Sheng Chen, Guo-Hua Yu
  • Patent number: 7911563
    Abstract: A method for making a polarizer-and-compensator assembly includes: (a) forming an alignment film on a releasable substrate; (b) forming a liquid crystal film on the alignment film so as to form a compensator layer on the releasable substrate; and (c) transferring the compensator layer from the releasable substrate to a polarizer plate by removing the releasable substrate from the compensator layer and attaching the alignment film to the polarizer plate.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: March 22, 2011
    Assignee: Far Eastern New Century Corporation
    Inventor: Wei-Che Hung
  • Patent number: 7911575
    Abstract: It is disclosed a liquid crystal display having an electrode pad for compensating for differences in resistance of electrode links. The liquid crystal display including a pixel area and a driving circuit, comprises at least two electrode links each extended from the pixel area; and at least two pads in contact with the driving circuit and the electrode links, each pad being in contact with each electrode link and having a non-resistivity that depends on a length of the each electrode link. Accordingly, resistance differences that depend on the length of the electrode links are compensated for using electrode pads, thereby making signal conductors with substantially equal resistances.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: March 22, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Hong Jin Kim
  • Patent number: 7907234
    Abstract: An exemplary backlight module (11) includes a light source (17) including a lamp cover (172), at least one optical film (13, 14), a light guide plate (16), and a spacing member (168). The lamp cover includes an upper plate (173). The light guide plate includes a light incident surface (161), a light output surface (162) adjacent to the light incident surface (161). The light source is adjacent to the light incident surface. The at least one optical film is provided on the light output surface. The spacing member is provided between the at least one optical film and the upper plate of the lamp cover.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: March 15, 2011
    Assignee: Chimei Innolux Corporation
    Inventor: Chien-Chung Fang
  • Patent number: 7907225
    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: September 18, 2009
    Date of Patent: March 15, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kikuo Ono, Masahiro Tanaka, Yoshiaki Nakayoshi, Nobuyuki Suzuki
  • Patent number: 7903209
    Abstract: Disclosed are a liquid crystal display (LCD) device and a method for manufacturing the LCD device. The LCD device has a substrate including a display region and a pad region located in a periphery of the display region, the display region having a transparent electrode, the pad region having a pad electrode. The transparent electrode and the pad electrode are formed from the same layer. A reflective electrode having a transmission window exposing a portion of the transparent electrode is formed on the transparent electrode. The manufacturing process can be simplified because the transparent electrode is directly connected to the reflective electrode. Since the pad electrode is formed of the same layer as the transparent electrode, no metal corrosion occurs to thereby increase the pad reliability during COG bonding.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chun-Gi You