Patents Assigned to NEC LCD Technologies
  • Patent number: 7561238
    Abstract: In a liquid crystal display device comprising a first substrate 101 having a color filter, a second substrate 131 and a liquid crystal layer disposed therebetween, a color filter layer 110 is disposed on a protection film 108 of a thin film transistor formed on the first substrate 101 so as to be partitioned by a light shielding portion 111, and a common electrode 103 is disposed thereon. A pixel electrode to be connected to a source electrode 107 is disposed through a through hole formed in an overcoat layer (interlayer separation film) 112. On the first substrate below the color filter layer 110 are provided plural scan signal electrodes, plural video signal electrodes crossing the scan signal electrodes in a matrix form, plural thin film transistors formed in association with the crossing points between the electrodes.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: July 14, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Michiaki Sakamoto, Takahiko Watanabe, Hirofumi Ihara, Hironori Kikkawa, Mamoru Okamoto, Shinichi Nakata, Yuji Yamamoto, Masayoshi Suzuki, Teruaki Suzuki, Toshiya Ishii, Hiroshi Kanoh
  • Patent number: 7557899
    Abstract: A liquid crystal display device includes a first substrate including a thin film transistor, a data line, a pixel electrode, and a common electrode, a second substrate, and liquid crystal sandwiched between the first and second substrates, wherein an image signal is applied to the thin film transistor through the data line to generate an electric field between the pixel electrode receiving the image signal and the common electrode such that the liquid crystal is rotated by the electric field in a plane which is in parallel with the first substrate. The first substrate includes an electrically insulating inorganic film covering the data line therewith, a first island-shaped electrically insulating organic film formed on the electrically insulating inorganic film above the data line, and a shield common electrode covering the first island-shaped electrically insulating organic film therewith and overlapping the data line when viewed vertically.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: July 7, 2009
    Assignee: NEC LCD Technologies, Ltd
    Inventors: Yoshiro Kitagawa, Satoshi Kimura, Tsuyoshi Satoh, Hidenori Kusanagi, Juko Funaki, Sounosuke Takahashi, Takayuki Konno, Shinichi Nishida
  • Publication number: 20090167996
    Abstract: A light shield member in a LCD unit includes a first shield section that includes a pile of two color filter patterns and separates each effective opening of pixel from an effective opening of the adjacent pixel, and a second shield section that includes a pile of three color filter patterns and shields a TFT area including a TFT and the vicinity thereof.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 2, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Sounosuke Takahashi, Teruaki Suzuki, Shinichi Nishida, Yoshikazu Sakaguchi, Yoichi Sasaki
  • Publication number: 20090167731
    Abstract: Driver IC 1 including a built-in charge pump power supply is mounted on display panel 5. Among wirings connected to driver IC 1, the width of FPC mounting pad 4 of connection wiring 3 leading to a driver built-in power supply is widened as compared with pads 4 of other wirings 2. In addition, a portion of terminal intervals of a terminal array of FPC mounting pad 4 is widened as compared with other terminal intervals so that a wiring path from pad 4 to driver IC 1 is reduced. Similar terminal widths and terminal intervals are adopted for terminal 6 on the side of flexible substrate 7 electrically connected to FPC mounting pad 4 by pressure bonding.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 2, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventor: Yukihiro Ito
  • Publication number: 20090167846
    Abstract: To provide an image display device of an excellent display quality with which the brightness is not deteriorated in reflective displays, and to provide a portable terminal using the same. Provided is a display device which includes: a plurality of arranged display elements each including at least a pixel for displaying a first-viewpoint image and a pixel for displaying a second-viewpoint image, each of the pixels having a transmissive display area for transmitting light and a reflective display area for reflecting external light; and an optical device for distributing light emitted from each of the pixels to different directions from each other, wherein the reflective display areas of each of the display elements are arranged asymmetrically with respect to an axis that is perpendicular to an image distributing direction.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: NEC LCD Technologies
    Inventors: Shinya NIIOKA, Koji Shigemura, Shinichi Uehara
  • Publication number: 20090168167
    Abstract: A display device reduces the image quality degradations by suppressing the effect of the defective alignment regions caused by the spacers while minimizing the aperture ratio lowering, and prevents the image quality change dependent on the observation positions. The display device has a display panel and a lenticular lens. Each unit pixel of the display panel includes the sub-pixel for the left eye and the sub-pixel for the right eye. To keep the pair of substrates at a predetermined gap, spacers are arranged at predetermined positions in the gap. The spacers are stripe-shaped and extended along a direction perpendicular to the image separation axis of the lenticular lens. The spacers are equally overlapped with the sub-pixels for the left eye and those for the right eye. The spacers may be isolated for the respective unit pixels, or the first or second sub-pixels.
    Type: Application
    Filed: November 25, 2008
    Publication date: July 2, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Tsutomu HIROYA, Shinichi Uehara, Koji Shigemura
  • Patent number: 7554207
    Abstract: In a method of forming an electrically conductive lamination pattern, an insulating film is formed on a surface of a chromium-containing bottom layer, before an aluminum-containing top layer is formed over the insulating film, so that the insulating film separates the aluminum-containing top layer from the chromium-containing bottom layer. A first selective wet etching process is carried out for selectively etching the aluminum-containing top layer with a first etchant. A second selective wet etching process is carried out for selectively etching the chromium-containing bottom layer with a second etchant in the presence the insulating film which suppresses a hetero-metal-contact-potential-difference between the chromium-containing bottom layer and the aluminum-containing top layer during the second selective wet etching process.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: June 30, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Tsuyoshi Katoh, Syuusaku Kido, Akitoshi Maeda
  • Patent number: 7554164
    Abstract: A method of deforming a pattern comprising the steps of: forming, over a substrate, a layered-structure with an upper surface including at least one selected region and at least a re-flow stopper groove, wherein the re-flow stopper groove extends outside the selected region and separate from the selected region; selectively forming at least one pattern on the selected region; and causing a re-flow of the pattern, wherein a part of an outwardly re-flowed pattern is flowed into the re-flow stopper groove, and then an outward re-flow of the pattern is restricted by the re-flow stopper groove extending outside of the pattern, thereby to form a deformed pattern with at least an outside edge part defined by an outside edge of the re-flow stopper groove.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: June 30, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Shusaku Kido
  • Patent number: 7551244
    Abstract: An optical element comprises a pair of substrates each having an electrode and bonded together with a gap therebetween and a light adjusting material including a liquid crystal and enclosed in the gap. Each of the pair of substrates has an electrode connecting portion to be connected to an external circuit. At least a part of the electrode connecting portion of each of the substrates is located on the same side as that of the optical element. The electrode connecting portion of one of the substrates and the electrode connecting portion of the other of the substrates have respective electrode portions at regions that are not opposed to each other. The electrode portion of each of the electrode connecting portions is connected to the external circuit.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: June 23, 2009
    Assignees: NEC Corporation, NEC LCD Technologies, Ltd., SEIKO Company, Ltd.
    Inventors: Kouji Mimura, Ken Sumiyoshi, Fujio Okumura, Shigetoshi Hayata, Tamio Uchino, Yoshiaki Furuya, Youhei Saitou, Katsuhisa Ishii, Takahiko Kanamori
  • Patent number: 7551340
    Abstract: A microlouver has, as a basic unit, a light-controlling layer in which a light-absorbing layer and a transparent layer are laminated together, and a plurality of basic units L and S comprising a plurality of types of light-controlling layers having different layer thicknesses or optical constants, disposed in the direction of the layer thickness of the basic units. The array mode of the basic units L and S is determined based on a random number or a sequence-generating rule. For this reason, the microlouver has a large number of frequency components in terms of spatial frequency, and moire fringes that have a specific period and are normally caused by the interference with other optical elements are therefore prevented from occurring.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 23, 2009
    Assignees: NEC Corporation, NEC LCD Technologies Ltd.
    Inventors: Ken Sumiyoshi, Koji Mimura
  • Publication number: 20090153214
    Abstract: To provide, with a simple structure, a voltage controlled oscillator, etc., whose center oscillation frequency is stable even if there is a change in the temperature. A delay element includes: a delay generating part which adds a delay amount to an input signal to generate an output signal; and a delay control part which controls the delay. The delay control part has a delay adjusting circuit which outputs a first control signal for adjusting the delay amount, and a temperature compensating circuit which outputs a second control signal for compensating property changes caused by the temperature. The delay control part outputs a third control signal obtained by synthesizing the first control signal and the second control signal to the delay generating part to control the delay amount. The delay control part obtains the third control signal by having the delay adjusting circuit and the temperature compensating circuit connected in series.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 18, 2009
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Kenichi TAKATORI
  • Patent number: 7548295
    Abstract: A pixel electrode connected to a signal line through a switching element and a common electrode connected to a common wiring are disposed, as alternating with each other, within each pixel region. Common potential lines are disposed on level below the signal line with an insulating film in between and also on both sides of the signal line when seen in plan view. A floating electrode is disposed on level above the signal line with a protective film in between, as overlapping the signal line and the common potential lines on both sides of the signal line.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: June 16, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Taku Kawasaki, Shinichi Nishida, Takayuki Konno
  • Publication number: 20090135381
    Abstract: An apparatus for processing a substrate includes a substrate carrier for carrying a substrate, a chemical-applying unit for applying chemical to the substrate, and a development unit for developing the substrate.
    Type: Application
    Filed: January 26, 2009
    Publication date: May 28, 2009
    Applicant: NEC LCD Technologies, Ltd.
    Inventor: Shusaku KIDO
  • Publication number: 20090128754
    Abstract: A color filter substrate includes a display area for displaying images, a frame area being adjacent to the display area and at least two kinds of laminated pieces which are composed by laminating at least two pieces of colored layers each including a different color. Here, the laminated pieces are arranged in the frame area in a shape of mosaic.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 21, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Teruaki SUZUKI, Sounosuke Takahashi, Taku Kawasaki, Shinichi Nishida, Yoshikazu Sakaguchi, Hideki Ito
  • Publication number: 20090128721
    Abstract: Disclosed is an active matrix liquid crystal display device including: an active matrix liquid crystal display device of a normally black mode which includes an active matrix substrate and an opposed substrate and in which a black matrix is not provided on the opposed substrate, wherein a gap between opaque electrodes which are closely located and whose electric potentials are different from each other in a frame portion around a display area of the active matrix substrate is covered with a constant-potential transparent electrode arranged in an upper layer of the gap.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 21, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Taku KAWASAKI, Teruaki SUZUKI, Shinichi NISHIDA
  • Patent number: 7534026
    Abstract: In a display device equipped with a light source device, a second light-guide member is provided to the back surface of a first light-guide member that has an emitted light control sheet provided to the front surface thereof. The emitted light control sheet is composed of a flat plate portion and protrusions. A first light source mounted to a side surface of the first light-guide member, and a second light source mounted to a side surface of a second light-guide member are switched and turned on. The emitted light control sheet has light-condensing effects when the first light source is on, and has diffusing effects when the second light source is turned on. The angle range of illuminating light can thereby be switched.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: May 19, 2009
    Assignees: NEC Corporation, NEC LCD Technologies, Ltd.
    Inventors: Shin-ichi Uehara, Masao Imai
  • Publication number: 20090122244
    Abstract: A liquid crystal display panel has a pair of opposed substrates, a seal material and a liquid crystal material. The seal material bonds the pair of substrates to each other, and is formed into a closed curve shape enclosing a region including a pixel region. The liquid crystal material is filled in a region enclosed by the pair of substrates and the seal material. A surface of interface which is a surface made up of at least one substrate of the pair of substrates, and which is in contact with the liquid crystal material in a frame region enclosed by an outer periphery of the pixel region and an inner periphery of the seal material, includes a low wettability structure in which wettability to the liquid crystal material is lower than that of the surface of the one substrate in the pixel region.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 14, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventor: Toshihiko MOTOMATSU
  • Publication number: 20090122211
    Abstract: A transflective LCD unit includes a liquid crystal (LC) layer: first and second substrates sandwiching therebetween the LC layer to define an array of pixels each including a reflective area and a transmissive area; an electrode assembly for driving the LC layer such that the LC layer in the reflective area is driven in a longitudinal-electric-field mode and the LC layer in the transmissive area is driven in a lateral-electric-field mode; and a reverse-tilt control member for controlling a reverse tilt area in which a reverse tilt of LC molecules occurs near the boundary between the reflective area and the transmissive area.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 14, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Kenichi MORI, Michiaki SAKAMOTO, Hiroshi NAGAI
  • Patent number: 7532285
    Abstract: An LCD device includes therein a splay-oriented LC layer, first and second substrates sandwiching therebetween the LC layer, and an optical compensation film for reducing leakage light upon display of a black color. The optical compensation film has three optical elastic axes including a fast axis coinciding the Y-axis, a slow axis rotated from the X-axis by a positive rotational angle ? 1, and another axis rotated from the Z-axis by the positive rotational angle ? 1. The positive rotational direction coincides with a counter-clockwise direction within the substrate surface, as viewed from minus side toward the positive side of the Y-axis.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: May 12, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Hiroshi Nagai, Hidenori Ikeno
  • Patent number: 7532270
    Abstract: A method for manufacturing a liquid crystal display that provides a wide viewing angle and in which its manufacturing processes are shortened and high reliability is provided. The method includes the steps of forming a gate electrode metal layer and forming a gate electrode by patterning using photolithography; forming an interlayer insulating film, an a?Si layer, an n+ a?Si layer, and a drain electrode metal layer and forming a drain line and an island by performing patterning, ashing processing, reflow processing using photolithography, and peeling; forming an insulating film on a transparent insulating substrate and forming an insulating film contact used to provide a connection to a source electrode of an island at a specified position by patterning or a printing method; forming a transparent conductive film and forming a pixel electrode and common electrode by patterning using photolithography.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: May 12, 2009
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Yoshiaki Hashimoto, Hiroaki Tanaka, Shigeru Kimura, Syuusaku Kido