Patents Assigned to NLT Technologies, Ltd.
  • Display device and electronic appliance
    Patent number: 8552965
    Abstract: To provide a liquid crystal display device capable of switching the range of viewing angles while being able to reduce the cost and thickness of the device, and to provide an electronic appliance having the same. The display device according to the present invention includes: a liquid crystal type display panel having a diffusive reflection part which diffusively reflects light irradiated from the front side while transmitting light from the back side; and a backlight source disposed on a back face of the display panel along the display panel for switchably outputting transmission light of different directivities.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: October 8, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Ken Sumiyoshi, Koji Mimura, Yuji Kondo, Masatake Baba
  • Stacked LCD unit
    Patent number: 8552924
    Abstract: A LCD unit includes a plurality of LC panels stacked one on another. If a picture to be displayed on the LCD unit is a still picture, one of the LC panels consecutively scans plurality of rows of pixels in a direction opposite to the scanning direction of the rows of pixels in the rest of LC panels. If the picture is a moving picture, all the LC panels consecutively scans in the same direction.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 8, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Hidenori Ikeno, Takashi Yatsushiro
  • Liquid crystal display panel and liquid crystal display device using the same
    Patent number: 8547510
    Abstract: A liquid crystal display panel for displaying an image by controlling an orientation direction of a liquid crystal mixture with respect to each pixel, includes a first common electrode which is formed on a first substrate; a second common electrode which is formed on a second substrate and includes a predetermined opening; and a pixel electrode which is formed on the second substrate, wherein the first substrate faces the second substrate so that the liquid crystal mixture with positive dielectric anisotropy is sandwiched between the first common electrode and the second common electrode, and wherein the orientation direction of the liquid crystal mixture changes mainly in a face parallel to the substrate according to an electric field generated from electric potential of the first common electrode, the second common electrode, and the pixel electrode.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: October 1, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Hiroaki Matsuyama, Takahiko Watanabe
  • METHOD OF DRIVING THE BACKLIGHT OF A LIGHT-EMITTING REGION OF AN LCD DEVICE TO REDUCE THE INFLUENCE OF LIGHT LEAKED FROM NEIGHBORING LIGHT-EMITTING REGIONS
    Publication number: 20130249973
    Abstract: There is provided a method of driving a backlight of a liquid crystal display device capable of eliminating leakage of light from adjacently-placed light emitting blocks. A gray level and maximum gray level of an input video signal are inputted for every light-emitting block. An output average gray level is calculated and a lighting control signal corresponding to converted luminance is outputted. The drivers responding to the lighting control signal makes LEDs (Light Emitting Diodes) emit light. An average gray level from an output from sensors is calculated. An average gray level, based on an average gray level and a light leakage rate, by taking light leakage into consideration. A gray level correcting signal is outputted in the light-emitting block based on the above output average gray level. An output average gray level is corrected in response to a gray level correcting signal.
    Type: Application
    Filed: May 14, 2013
    Publication date: September 26, 2013
    Applicant: NLT Technologies, Ltd.
    Inventor: Nobuaki HONBO
  • TRANSFLECTIVE TYPE LCD DEVICE HAVING EXCELLENT IMAGE QUALITY
    Publication number: 20130249891
    Abstract: An LCD device has a reflective area that reflects light incident from a polarizing film side using a reflection film, and a transmissive area that transmits light of a backlight incident from a TFT substrate side. The drive voltages of the reflective area and transmissive area are Vr and Vt, the black voltage in the reflective area is Vr (K), the black voltage in the transmissive area is Vt (K). The reflectance R, the transmittance T, characteristics of R with respect to drive voltage [Vr (K)?Vr] and characteristics of T with respect to drive voltage [Vt?Vt (K)] substantially match each other.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicant: NLT Technologies, Ltd.
    Inventors: Kenichirou NAKA, Michiaki SAKAMOTO, Kenichi MORI, Hiroshi NAGAI
  • Liquid crystal display with narrow angular range of incident light
    Patent number: 8537305
    Abstract: A liquid crystal display includes a liquid crystal panel in the pixel electrode and common electrodes formed within a pixel comprise repeating structures. The angular range of light incident from the light source is narrower along a direction of the repeating structures than along an orthogonal direction.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: September 17, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Kouji Mimura, Ken Sumiyoshi
  • Thin-film transistor array substrate, method of manufacturing same and liquid crystal display device
    Patent number: 8537297
    Abstract: A vertically aligned thin-film transistor array substrate in which there is no reduction in aperture ratio includes an etching-stop layer formed on an insulating layer; a passivation layer formed on the insulating layer that includes the etching-stop layer; a depression formed in the passivation layer and hollowing the passivation layer to the surface of the etching-stop layer; and a pixel electrode, which is recessed in conformity with the depression, formed on the passivation layer that includes the depression; wherein the etching-stop layer comprises a transparent semiconductor.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: September 17, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Hirotaka Yamaguchi, Kenichi Takatori
  • METHOD OF FABRICATING A THIN-FILM DEVICE
    Publication number: 20130237012
    Abstract: A method of forming a thin-film device includes forming an oxide-semiconductor film formed on the first electrical insulator, and forming a second electrical insulator formed on the oxide-semiconductor film, the oxide-semiconductor film defining an active layer. The oxide-semiconductor film is comprised of a first interface layer located at an interface with the first electrical insulating insulator, a second interface layer located at an interface with the second electrical insulator, and a bulk layer other than the first and second interface layers. The method further includes oxidizing the oxide-semiconductor film to render a density of oxygen holes in at least one of the first and second interlayer layers is smaller than a density of oxygen holes in the bulk layer.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 12, 2013
    Applicant: NLT Technologies LTD
    Inventors: Kazushige TAKECHI, Mitsuru NAKATA
  • Bootstrap circuit, and shift register, scanning circuit, display device using the same
    Patent number: 8531376
    Abstract: There is disclosed a shift register comprising a bootstrap circuit that outputs a voltage of the supply voltage to the output when the voltage of a first node becomes higher or lower than the supply voltage. The shift register comprises: two or more transistors connected in series to the first node; a device for supplying the voltage to a second node between the transistors such that the voltage between the drains and sources of the transistors becomes below the supply voltage; a first input transistor connected to the first node, and the gate electrode thereof is connected to a first input terminal as well; and an output transistor connected to the output terminal and the clock signal while having the gate electrode connected to the first node, wherein the gate electrode of the output transistor is not opened except for the bootstrap period.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: September 10, 2013
    Assignee: NLT Technologies, Ltd.
    Inventor: Masamichi Shimoda
  • DISPLAY DEVICE, DRIVING METHOD THEREOF, TERMINAL DEVICE, AND DISPLAY PANEL
    Publication number: 20130229394
    Abstract: To provide a plural-viewpoint display device having an image separating optical element such as a lenticular lens or a parallax barrier, which is capable of arranging thin film transistors and wirings while achieving substantially trapezoid apertures and high numerical aperture, and to provide a driving method thereof, a terminal device, and a display panel. A neighboring pixel pair arranged with a gate line interposed therebetween is connected to the gate line placed between the pixels, each of the pixels configuring the neighboring pixel pair is connected to the data line different from each other, and each of the neighboring pixel pairs neighboring to each other in an extending direction of the gate lines is connected to the gate line different from each other.
    Type: Application
    Filed: April 17, 2013
    Publication date: September 5, 2013
    Applicant: NLT Technologies, Ltd.
    Inventors: Shinichi UEHARA, Hidenori IKENO, Tetsushi SATOU
  • Display device with lens array or parallax barrier that switches between narrow view mode and wide view mode
    Patent number: 8525754
    Abstract: A display device includes a display panel including a plurality of pixel groups for displaying respective images independently of each other, and a parallax barrier for limiting view ranges of images displayed respectively by the pixel groups such that the view ranges overlap each other in an overlap area.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: September 3, 2013
    Assignee: NLT Technologies, Ltd.
    Inventor: Ken Sumiyoshi
  • Non-rectangular pixel array and display device having same
    Patent number: 8525966
    Abstract: There is provided a display area made up of a pixel array with a non-rectangular shaped outer circumference and the pixel array is made up of a plurality of non-rectangular pixels wherein a first conductor line group including a plurality of first conductor lines and a second conductor line group including a plurality of second conductor lines, and a third conductor line group including a plurality of third conductor lines are arranged so as to intersect with one another. Thus, without sacrificing brightness, viewability, and fidelity of an image, pixel array (display device) with the non-rectangular outer circumferential shape being excellent in design characteristics is realized.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: September 3, 2013
    Assignee: NLT Technologies, Ltd.
    Inventor: Kenichi Takatori
  • METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE
    Publication number: 20130221440
    Abstract: A semiconductor device in which a semiconductor layer is formed on an insulating substrate with a front-end insulating layer interposed between the semiconductor layer and the insulating substrate is provided which is capable of preventing action of an impurity contained in the insulating substrate on the semiconductor layer and of improving reliability of the semiconductor device. In a TFT (Thin Film Transistor), boron is made to be contained in a region located about 100 nm or less apart from a surface of the insulating substrate so that boron concentration decreases at an average rate being about 1/1000-fold per 1 nm from the surface of the insulating substrate toward the semiconductor layer.
    Type: Application
    Filed: March 25, 2013
    Publication date: August 29, 2013
    Applicants: NLT Technologies, Ltd., NEC Corporation
    Inventors: NEC Corporation, NLT Technologies, Ltd.
  • LIQUID CRYSTAL DISPLAY DEVICE COMPRISING PERIODICALLY CHANGED PERMUTATIONS OF AT LEAST TWO TYPES OF ELECTRODE-PATTERN PAIRS
    Publication number: 20130222745
    Abstract: A liquid crystal display device comprises a plurality of pixels arrayed in a first direction and a second direction, each of the pixels having a reflective area in at least a portion thereof. The reflective area comprises a surface-irregularity film that is a film having a plurality of surface irregularities, a light reflecting film disposed as an upper layer over the surface-irregularity film, and an electrode group disposed as an upper layer over the light reflecting film. The electrode group in each of the pixels that are arrayed in at least the first direction comprises at least two types of electrode patterns having different layouts.
    Type: Application
    Filed: January 2, 2013
    Publication date: August 29, 2013
    Applicant: NLT Technologies, Ltd.
    Inventor: NEC LCD Technologies, Ltd.
  • Liquid crystal driving device
    Patent number: 8514158
    Abstract: A liquid crystal driving device is provided which enables an overshooting driving operation in transition among all gray levels. When a voltage for displaying is controlled so as to be a highest-level value out of the voltages for displaying corresponding to an input gray level range, an overshooting driving voltage for transition to a higher voltage which is added to a voltage side being higher than the highest-value value out of the voltages for displaying is applied to a liquid crystal panel and, when a voltage for displaying to be applied to the liquid crystal panel is controlled so as to be a lowest-level value out of the voltages for displaying corresponding to the input gray level range, an overshooting driving voltage for transition to a lower voltage which is added to a voltage side being lower than the lowest-level value of the voltages for displaying is applied to the liquid crystal panel.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: August 20, 2013
    Assignee: NLT Technologies, Ltd.
    Inventor: Hiroaki Kimura
  • Lens sheet, display panel, and electronic apparatus
    Patent number: 8508852
    Abstract: To suppress bad shaping generated due to fusion of neighboring cylindrical lenses in a lens sheet formed by using an ultraviolet curable resin, for example. A lens sheet includes: a substrate formed with a transparent material; a plurality of protruded lines provided on the substrate in parallel at a specific pitch; and a plurality of cylindrical lenses, each of which is provided between the plurality of protruded lines on the substrate. The protruded line for forming the lens is designed to be constituted with a set of two lines, i.e., a left protruded line and a right protruded line, to suppress fusion of the neighboring lenses.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: August 13, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Hiroshi Okumura, Jin Matsushima, Hiroshi Tanabe
  • In-plane switching mode active matrix liquid crystal display unit
    Patent number: 8508705
    Abstract: In order to improve the light transmissivity above the transparent comb-teeth electrodes provided in an in-plane switching mode active matrix liquid crystal display unit, the liquid crystal gaps above the transparent comb-teeth electrodes are made larger than the liquid crystal gaps between the transparent comb-teeth electrodes.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 13, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Taku Kawasaki, Teruaki Suzuki
  • Transflective LCD unit
    Patent number: 8508699
    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: Grant
    Filed: November 10, 2008
    Date of Patent: August 13, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Kenichi Mori, Michiaki Sakamoto, Hiroshi Nagai
  • Transflective liquid-crystal-display device with single retardation film between half-waveplate and liquid crystal layer
    Patent number: 8502941
    Abstract: A LCD device has a LC layer sandwiched between a TFT substrate and a counter substrate, first and second polarizing films, a first ?/2 film between the first polarizing film and the counter substrate, and a second ?/2 film between the second polarizing film and the TFT substrate. Angle ?1 between the direction of the optical axis of the LC layer and the polarized direction of the light entering the LC layer satisfies the relationship: 0 degree<?1<45 degrees. The resultant LCD device has lower leakage light and coloring.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: August 6, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Hiroshi Nagai, Michiaki Sakamoto, Kenichi Mori, Kenichirou Naka, Hidenori Ikeno
  • ELECTROPHORETIC DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME
    Publication number: 20130194656
    Abstract: An electrophoretic display device includes a first substrate including switching elements and driving electrodes, an electrophoretic display element layer fixed on a predetermined display region of the first substrate, a sealing member formed to surround the display element layer on the first substrate, the sealing member being thicker than the display element layer, and a second substrate fixed on an opposite end of the sealing member to the first substrate, the second substrate having a wider area than the display element layer. The first substrate, the sealing member, and the second substrate constitute a closed inner space around the display element layer, thereby enclosing the display element layer in the space. The space is filled with an inert gas having a pressure approximately equal to an atmospheric pressure or is set in a predetermined vacuum state.
    Type: Application
    Filed: January 28, 2013
    Publication date: August 1, 2013
    Applicant: NLT Technologies, Ltd.
    Inventor: NLT Technologies, Ltd.