Patents Examined by David Nelms
  • Patent number: 7916221
    Abstract: A surface light source includes a light guide unit which allows two linear polarized lights having polarized planes perpendicular to each other to alternately exit from an exit surface in a direction substantially parallel with a normal line of the exit surface. A retardation element is arranged to face the exit surface. The retardation element has ?/2 retardation portions which give a phase difference of a ½ wavelength between ordinary light and abnormal light, and a plurality of non-retardation portions having substantially no phase difference alternately formed in a direction along the exit surface. A lens array is provided to face the light guide unit. The lens array allows light which has been transmitted through a ?/2 retardation portion to exit in a first inclined exiting direction, and allows light which has been transmitted through a non-retardation portion to exit in a second inclined exiting direction.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: March 29, 2011
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yasuhiro Daiku
  • Patent number: 7916247
    Abstract: An electro-optic device includes: A frame light-shielding film defined a periphery of a pixel area. A frame light-shielding film having an opening at a predetermined position. An alignment mark formed in the opening. An opening light-shielding film formed so as to shield the opening in plan view.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: March 29, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Hitoya Nagasawa
  • Patent number: 7916241
    Abstract: An optical element manufacturing method according to the present invention includes: disposing a mask on a transparent photosensitive resin; patterning said transparent resin by applying an exposure light to said transparent photosensitive resin through said mask to form a transparent layer; forming a light absorbing layer by filling a gap in the transparent layer with a black curable resin; and illuminating a mask surface of the mask with the exposure light at an angle.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: March 29, 2011
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Koji Mimura, Ken Sumiyoshi
  • Patent number: 7916243
    Abstract: A dual liquid crystal display (LCD) device including a first LCD panel displaying an image on a first surface; a second LCD panel formed on the same substrate to display an image on a second surface; a light source disposed at an adjacent side under the first LCD panel; a light guide disposed under the first and second LCD panels and including a first light guide block corresponding to the first LCD panel and having dot patterns formed in a first surface and a second light guide block corresponding to the second LCD panel and having taper-cascade grooves formed on a first surface; and a housing settling the first and second LCD panels, the light source and the light guide and having an opening to correspond to an image display surface of the second LCD panel.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 29, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Han Bae, Shawn Kim, James Kim, Chang-Won Lee, David Lee, Hwal Choi
  • Patent number: 7916254
    Abstract: A liquid crystal display includes a pair of substrates including at least one transparent substrate, a liquid crystal layer arranged between the substrates, a plurality of electrodes formed on at least one of the substrates to apply an electric field to the liquid crystal layer, a plurality of active elements connected to the electrodes, an alignment layer formed on the surface of each of the substrates in contact with the liquid crystal layer, and an optical means formed on at least one of the substrates to change the optical characteristics in accordance with the alignment condition of the particles of the liquid crystal layer. The taper angle at the ends of the electrodes is larger than 45 degrees but less than 90 degrees.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: March 29, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Shigeru Matsuyama
  • Patent number: 7916263
    Abstract: It is an object to provide a highly reliable display device. It is a feature an IC is over a substrate and a material layer having the same height is thereover. An IC is provided on one side of the substrate, and a material layer having the same height as the IC is provided on at least another side. Further, an IC is provided on one side of the substrate, and material layers having the same height as the IC are provided on the other sides. Further, an IC is provided on one side of the substrate, and a material layer having the same height as the IC is provided at a corner of the substrate.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: March 29, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 7911558
    Abstract: An image display apparatus includes a backlight unit including a plurality of light sources arranged in a flat, a reflecting portion for reflecting light from the light sources, a diffuser for diffusing the light from the light sources and the light reflected from the reflecting portion, and a chassis for maintaining or supporting the light sources, the reflecting portion and the diffuser; and a liquid crystal display unit which receives the light diffused by the diffuser of the backlight unit. Concave portions are formed in the chassis at positions corresponding to electrodes of the plurality of light sources, positions corresponding to light-emitting portions of the light sources are arranged in a flat, and a circuit for driving the liquid crystal display unit is provided on a rear surface of a planar portion of the chassis. Accordingly, it is possible to realize a thin lightweight backlight with high luminance and high luminance uniformity.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: March 22, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Mayumi Nagayoshi, Satoshi Ouchi, Seiji Murata, Yasutaka Tsuru
  • Patent number: 7911555
    Abstract: The present invention provides a liquid crystal display device in which a light transmitting conductive layer formed on a surface of a color filter substrate is electrically connected with a backlight lower frame using conductive rubber. One end of the conductive rubber is connected with the light transmitting conductive layer, and another end of the conductive rubber is connected with the backlight lower frame through a hole which is formed in a backlight upper frame. The liquid crystal display device of the present invention can remove static electricity charged in a surface of a display panel and, at the same time, can realize the narrowing of a picture frame and the reduction of thickness thereof.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: March 22, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Norihisa Fukayama, Mutsumi Maehara
  • Patent number: 7911577
    Abstract: An in-plane mode liquid crystal display device (LCD) is provided that is capable of improving a contrast ratio by blocking a light leakage region formed by a column spacer. The LCD includes gate and data lines that are formed on a substrate and cross each other to define pixels. A switching device, parallel first and second electrodes that generate a horizontal electric field, and a column spacer are disposed at each pixel. The column spacers are disposed between opposing substrates and are aligned with black matrix or the data lines such that the columns formed by the column spacers overlap with bent portions of the data lines.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 22, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Min-Jic Lee, Chang-Hoon Lee, Hee-Dong Choi
  • Patent number: 7911567
    Abstract: A reflective liquid crystal display (LCD) is provided for efficiently preventing white coordinates from being yellowish. The LCD includes a substrate having red color filters, green color filters, and blue color filters. The blue color filters have an overall area smaller than that of the red color filters and the green color filters while blocking green light better than the red color filters and blocking red light better than the green color filters.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 22, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-seok Roh, Soo-guy Rho
  • Patent number: 7911579
    Abstract: This invention discloses a photo spacer material arrangement method. The method is used for a flat display apparatus that comprises at least one photo spacer, a panel, and a substrate. The photo spacer material provides a fixed distance between the panel and the substrate. The photo spacer material arrangement method comprises providing an area unit composed of N×N sub-area units with multiple columns and multiple rows. In order to provide P photo spacers for uniform distributing on sub-area units with an arrangement mode, there is only one photo spacer in each column, and there is only one photo spacer in each row in sub-area units.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: March 22, 2011
    Assignee: Au Optronics Corporation
    Inventor: Min-Feng Chiang
  • Patent number: 7911557
    Abstract: The present invention relates to a liquid crystal display panel with improved image contrast comprising an array of pixel regions and a sequence of a recycling backlight structure comprising broadband rear interference polar (RI-Polar) having a transmission axis AB with preset orientation, a spatial intensity modulation structure comprising a broadband front interference polar (FI-Polar) having a transmission axis approximately parallel to the transmission axis AB, a spectral filtering structure, and antireflection means. Each said pixel region spatially encompasses a plurality of subpixel regions. The RI-Polar and FI-Polar are multilayer structures of stacked layers. At least one layer of each structure is optically anisotropic, made by means of Cascade Crystallization Process and characterized by a globally ordered biaxial crystalline structure with an intermolecular spacing of 3.4±0.3 ? in the direction approximately parallel to the transmission axis AB.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: March 22, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Pavel I. Lazarev, Michael V. Paukshto
  • Patent number: 7911546
    Abstract: A liquid crystal device includes a substrate, an opposing substrate disposed so as to face the substrate, a liquid crystal layer interposed between the substrate and the opposing substrate, and a plurality of spacers disposed between the substrate and the opposing substrate and having different aspect ratios from each other.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 22, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Sera
  • Patent number: 7907228
    Abstract: Provided is a thin film transistor liquid crystal display (TFT LCD), comprising a color filter substrate and an array substrate disposed opposite to each other; wherein the array substrate comprises a base substrate, data lines and gate lines formed on the base substrate, and an insulating protective layers on the data lines or gate lines; the color filter substrate and the array substrate are assembled with each other in a peripheral portion with sealant mixed with metal micro-balls at a ratio, and a top conductive film is formed on the insulating protective layer above the data lines or gate lines below the sealant in the peripheral portion.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: March 15, 2011
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Zhilong Peng
  • Patent number: 7907237
    Abstract: The present invention provides a pattern formation substrate provided with a transparent substrate, a partition pattern formed on the transparent substrate in an approximately orthogonal grid shape, and a coloring pattern of plural colors, provided in an opening partitioned off with the partition pattern. The coloring pattern is formed in an approximately stripe shape in each of the colors, the partition pattern is composed of an X-direction partition pattern provided in an approximately orthogonal direction to a longitudinal direction of the stripe of the coloring pattern and a Y-direction partition pattern provided in an approximately parallel direction to the longitudinal direction of the stripe of the coloring pattern, and an average film thickness of the X-direction partition pattern is smaller than that of the Y-direction partition pattern.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: March 15, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Tadatoshi Maeda, Junichi Kaminaga, Teruhiko Kai, Naganori Ohama, Madoka Ozawa
  • Patent number: 7907245
    Abstract: An in-plane switching (IPS) mode liquid crystal display (LCD) includes: a plurality of gate lines and data lines arranged vertically and horizontally to define a plurality of pixel regions on a first substrate; thin film transistors (TFTs) at each crossing of the gate and data lines and including an active layer, a source electrode and a drain electrode, respectively; a common electrode line substantially parallel to the gate lines; a plurality of first pixel electrodes and first common electrodes and a plurality of second pixel electrodes and second common electrodes having a tilt angle with respect to the gate lines and alternately disposed on upper and lower portions of the pixel regions to generate an in-plane electric field; and a second substrate attached with the first substrate.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: March 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Young-Mi Tak
  • Patent number: 7907229
    Abstract: A main liquid crystal display panel is attached to a frame, and a sub liquid crystal display panel is attached to a bezel. The frame and the bezel are assembled to each other so that the main liquid crystal display panel and the sub liquid crystal display panel are arranged and held so as to face opposite sides. The frame and the bezel are separated from each other, whereby each of the liquid crystal display panels and can be easily separated at every part of the frame and the bezel.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: March 15, 2011
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Shunichiro Hayashi, Atsushi Hirota
  • Patent number: 7907224
    Abstract: One embodiment of the present invention is an image display device including a substantially transparent substrate, a color filter layer formed on the substantially transparent substrate and a substantially transparent semiconductor circuit formed on the color filter layer. The circuit includes a substantially transparent thin film transistor including a source electrode, a drain electrode, a gate insulating film, a gate electrode and a semiconductor active layer comprised of a metal oxide. The semiconductor active layer has a thickness of 10 nm-35 nm. The circuit also includes a wiring made of a substantially transparent conductive material, the wiring having a electric contact point with the substantially transparent thin film transistor.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: March 15, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Manabu Ito, Chihiro Miyazaki
  • Patent number: 7907227
    Abstract: A liquid crystal display is provided with a first substrate, a color filter formed on the first substrate, a first electrode formed on the color filter, an interlayer insulating layer formed on the first electrode, a light blocking member formed on the interlayer insulating layer and partially overlapping the first electrode, a second substrate facing the first substrate, a second electrode formed on the second substrate, and a liquid crystal layer interposed between the first and second substrates, wherein the light blocking member and the first electrode may be overlap each other, with the interlayer insulating layer interposed therebetween to form a storage capacitor.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: March 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joon-Hak Oh
  • Patent number: 7903194
    Abstract: A display system has a controlled transmission mirror disposed between the light sources and the display panel. The controlled transmission mirror includes a light-diverting input coupling element facing the light sources, a light-diverting output coupling element facing the display panel and a multilayer reflector between the input and output coupling elements. The controlled transmission mirror laterally spreads the light, making the illumination of the panel more uniform. The controlled transmission mirror may include a transparent substrate between the input and output coupling elements for additional light spreading. The light sources may be positioned within the controlled transmission mirror, rather than behind it. The output coupling element can be insensitive to polarization, so the light passing out of the controlled transmission mirror is unpolarized, or the output coupling element can be polarization sensitive so that the output light is polarized.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: March 8, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth A. Epstein, Timothy J. Hebrink, Andrew J. Ouderkirk, Michael F. Weber