Patents Assigned to NLT Technologies, Ltd.
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Patent number: 8780300Abstract: A planar light source, Fresnel lens sheet, and louver are disposed in the stated order in a light source apparatus. The Fresnel lens sheet deflects and focuses in one dimension light that has entered from the planar light source. The louver is disposed in the optical path of the light emitted from the Fresnel lens sheet, and the directivity of the light can be increased by restricting the traveling direction of the light to the focal direction of the Fresnel lens sheet. The light utilization ratio can thereby be increased, the directivity of planarly emitted light can be increased, and the brightness can be made uniform at the point of observation.Type: GrantFiled: June 23, 2006Date of Patent: July 15, 2014Assignee: NLT Technologies, Ltd.Inventors: Shinya Niioka, Ken Sumiyoshi, Shin-ichi Uehara, Masao Imai, Kenichi Takatori, Fujio Okumura
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Patent number: 8779512Abstract: 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: GrantFiled: March 25, 2013Date of Patent: July 15, 2014Assignees: NEC Corporation, NLT Technologies, Ltd.Inventor: Shigeru Mori
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Publication number: 20140192298Abstract: Provided are a liquid crystal lens element, a display unit and a terminal. The liquid crystal lens element includes an upper substrate, a lower substrate and a liquid crystal layer, where directions in which each of the upper and lower substrates extends are defined as the x-direction and the y-direction. An initial molecular orientation direction of the liquid crystal layer agrees with the x-direction. The upper substrate includes a repetition area in which plural A-electrode structures are arrayed in the x-direction so as to generate an electric potential gradient in the x-direction. The lower substrate includes a repetition area in which plural B-electrode structures are arrayed in the y-direction so as to generate an electric potential gradient in the y-direction. One of an opening section and a central electrode elongated in the y-direction is formed in the middle of each A-electrode structure.Type: ApplicationFiled: January 2, 2014Publication date: July 10, 2014Applicant: NLT Technologies, Ltd.Inventor: Ken SUMIYOSHI
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Patent number: 8773344Abstract: Disclosed is a display device for use of a surface display of an arbitrary shape, including a plural number of display element units, each made up of a circuit that forms a single stage of a scanning circuit and a pixel circuit connected to an output of the scanning circuit, are arranged in a unicursal fashion on a display substrate.Type: GrantFiled: October 12, 2007Date of Patent: July 8, 2014Assignee: NLT Technologies, Ltd.Inventors: Hiroshi Haga, Hideki Asada, Setsuo Kaneko
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Patent number: 8773517Abstract: 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: GrantFiled: December 23, 2008Date of Patent: July 8, 2014Assignee: NLT Technologies, Ltd.Inventors: Shinya Niioka, Koji Shigemura, Shinichi Uehara
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Patent number: 8773623Abstract: An IPS-mode transflective LCD device includes an array of pixels each including a reflective region and a transmissive region. A first pixel electrode and a first common electrode are formed in the reflective region, and a second pixel electrode and a second common electrode are formed in the transmissive region. The first and second pixel electrodes receive a common pixel signal. The first common electrode receives a first common signal which is common among the reflective regions of a plurality of pixels, and the second common electrode receives a second common signal which is common among the transmissive regions of the plurality of pixels.Type: GrantFiled: March 15, 2013Date of Patent: July 8, 2014Assignee: NLT Technologies, Ltd.Inventors: Michiaki Sakamoto, Jin Matsushima, Hiroshi Nagai, Kenichi Mori, Hidenori Ikeno, Yasuki Kudo, Ken Sumiyoshi
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Publication number: 20140184977Abstract: 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: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: NLT Technologies, Ltd.Inventors: Shinichi UEHARA, Hidenori IKENO, Tetsushi SATOU
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Patent number: 8767138Abstract: A vacuum suction control mechanism apparatus is capable of accurately bonding a film to a bonding object with a simple structure. The vacuum suction control mechanism apparatus includes a bonding head including a space defined therein, suction holes attracting a film, the suction holes extending from a surface of the bonding head to the space defined in the bonding head, a movable piece partitioning the space into two regions, the movable piece being movable relative to the bonding head within the space in contact with the suction holes, and a connection portion connectable to a decompression source, the connection portion being provided in a first region of the two regions.Type: GrantFiled: August 20, 2008Date of Patent: July 1, 2014Assignee: NLT Technologies, Ltd.Inventor: Hideki Kodera
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Patent number: 8767283Abstract: 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: GrantFiled: January 28, 2013Date of Patent: July 1, 2014Assignee: NLT Technologies, Ltd.Inventor: Hiromitsu Tanaka
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Patent number: 8766948Abstract: A touch sensor device includes: a touch panel on which a capacitance is formed with a pointer; a signal calculation unit calculating a signal output value based on a magnitude of the capacitance; a contact determination unit comparing the signal output value with a threshold and determining whether the pointer has been brought into contact with or separated from the touch panel; and a threshold calculation unit updating a first threshold used for determining whether the pointer has been brought into contact with the touch panel, if an increase of the signal output value is detected during a first unit time within a time period from a determination that the pointer has been brought into contact with the touch panel until a determination that the pointer has been separated from the touch panel.Type: GrantFiled: October 13, 2011Date of Patent: July 1, 2014Assignee: NLT Technologies, Ltd.Inventors: Jiro Yanase, Hiroshi Haga
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Publication number: 20140176498Abstract: The present invention calculates a first detected position influenced by the palm and an accurate second detected position from which the influence of the palm is eliminated immediately after a touch-on is judged, and calculates a correction value based on the first detected position and the second detected position. In a period from the point at which the touch-on is judged to the point at which a touch-off is judged, the first detected position influenced by the palm is calculated once successively, and the first detected position is corrected by the correction value to calculate a third detected position to improve the position accuracy at the time of the drag operation thereby.Type: ApplicationFiled: December 20, 2013Publication date: June 26, 2014Applicant: NLT Technologies, Ltd.Inventors: Jiro YANASE, Hiroshi HAGA
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Patent number: 8760761Abstract: A translucent liquid crystal display panel (2) includes pixel pairs as display units each formed by a left-eye pixel (4L) and a right-eye pixel (4R) and arranged in a matrix shape. A through hole (4Ld) arranged in a color layer (4Lc) of a color filter has a slit shape whose longitudinal direction is identical to the orientation direction of a cylindrical lens (3a) constituting a lenticular lens (3). Similarly, a through hole (4Rd) arranged in a color layer (4Rc) of a color filter has a slit shape whose longitudinal direction is identical to the orientation direction of the cylindrical lens (3a) constituting the lenticular lens (3). This suppresses the phenomenon that a hue is changed by a field-of-view angle and/or an external light condition on the translucent display panel capable of displaying an image directed to a plurality of viewpoints.Type: GrantFiled: June 27, 2007Date of Patent: June 24, 2014Assignee: NLT Technologies, Ltd.Inventor: Shin-ichi Uehara
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Patent number: 8760377Abstract: In a liquid crystal panel, a reflective pixel electrode and a transmissive pixel electrode in a unit pixel are supplied with an image signal output from a data line drive circuit, the two mutually different scanning signals output from a scanning line drive circuit, and common signals output from a common line drive circuit. The phase of the image signal is set different from that of the common signal. Further, a period during which the two scanning signals are selected is set in one horizontal period, the ending of the selection period for one of the scanning signals is set to a point in time before an electrical potential of the common signal changes, and the ending of the selection period for the other scanning signal is set to a point in time after the electrical potential of the common signal changes.Type: GrantFiled: June 30, 2010Date of Patent: June 24, 2014Assignee: NLT Technologies, Ltd.Inventors: Kenichi Mori, Michiaki Sakamoto
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Patent number: 8762089Abstract: Disclosed is a test method an apparatus in which an area for test and an area for analysis are specified based on the design information of the display device having a non-rectangular display area. To carry out testing, parasitic capacitances are found using the design information, and operations for weighting are performed on test data or threshold values based on which a decision on pass/fail is to be made.Type: GrantFiled: May 8, 2009Date of Patent: June 24, 2014Assignee: NLT Technologies, Ltd.Inventor: Kenichi Takatori
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Publication number: 20140167717Abstract: The present invention is directed to sufficiently reduce the level of EMI which occurs from a switching FET in a DC/DC converter and minimize deterioration in efficiency of a power supply. A DC/DC converter includes a switching circuit for driving a switching FET for increasing or decreasing voltage, and a switching circuit for driving a ringing frequency changing circuit. One end of a capacitor is connected to a drain of the switching FET for increasing or decreasing voltage, and the other end of the capacitor is connected to a drain of an FET for the ringing frequency changing circuit. A source of the FET for the ringing frequency changing circuit is connected to GND, and a control circuit is provided which makes the ringing frequency changing circuit valid so that a ringing frequency becomes low only in a ringing frequency component exerting large influence on deterioration in EMI.Type: ApplicationFiled: November 25, 2013Publication date: June 19, 2014Applicant: NLT Technologies, Ltd.Inventor: Kouichi OOGA
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Patent number: 8755011Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first and second substrates. The first substrate includes first to N-th 1st retardation plates arranged on the first transparent substrate, and the second substrate includes first to N-th 2nd retardation plates arranged on the second transparent substrate. Assuming that a retardation plate among the first to N-th 1st retardation plates has an optical axis arranged at a first angle relative to a reference direction and a retardation plate among the first to N-th 2nd retardation plates, corresponding to the retardation plate among the first to N-th 1st retardation plates, has an optical axis arranged at a second angle relative to the reference direction, the first and second angles are different from each other by about 90 degrees.Type: GrantFiled: February 3, 2011Date of Patent: June 17, 2014Assignee: NLT Technologies, Ltd.Inventors: Hidenori Ikeno, Michiaki Sakamoto, Takahiko Watanabe, Teruaki Suzuki
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Patent number: 8749722Abstract: A reflective liquid crystal display panel is a display panel for three-dimensional display in which pixel pairs as display elements composed of one left-eye pixel L and right-eye pixel R each are provided in a matrix. The lenticular lens is an optical member for image separation that is provided to separate the light from the left and right pixels, and numerous lenticular lenses form a lens array that is arranged in one dimension. An anisotropic scattering sheet as an anisotropic scattering element is provided between the lenticular lens and the reflective liquid crystal display panel. In this configuration, a reduction in the quality of the reflective display can be minimized, and improved image quality can be achieved without changing the concavo-convex structure of the reflecting panel and the lens shape of the lenticular lens in display device that is capable of displaying different images to a plurality of viewpoints.Type: GrantFiled: October 22, 2007Date of Patent: June 10, 2014Assignee: NLT Technologies, Ltd.Inventor: Shin-Ichi Uehara
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Patent number: 8748891Abstract: A manufacturing process of an LCD device of the invention includes forming a first substrate provided with a pixel part with thin film transistors and a seal portion arranged around the pixel part, forming a second substrate opposed to the first substrate, filling a liquid crystal layer between the first substrate and the second substrate, and adhering the first substrate to the second substrate with a sealant provided for the seal portion, wherein the forming the first substrate includes forming a semiconductor layer composing the thin film transistor, forming in the seal portion a semiconductor connection layer made of a same material as the semiconductor layer, and forming an organic interlayer insulating film, wherein the forming the semiconductor layer and the forming the semiconductor connection layer are performed in the same step.Type: GrantFiled: March 24, 2009Date of Patent: June 10, 2014Assignee: NLT Technologies, Ltd.Inventors: Hideaki Takamatsu, Fumihiko Matsuno
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Publication number: 20140152926Abstract: A stereoscopic image display device includes an image display unit including plural unit pixels each including pixels for left and right viewing fields; a gradient-refractive-index liquid-crystal lens; and a liquid-crystal lens drive circuit. The liquid-crystal lens includes a liquid-crystal cell, plural electrode groups each including plural stripe-shaped transparent electrodes corresponding to a column of the unit pixels, and a counter transparent electrode having a constant potential. The liquid-crystal lens drive circuit is configured to apply voltages to the transparent electrodes with forming a common voltage pattern for each of the electrode groups so as to make liquid crystal of the liquid-crystal cell work as plural lenses forming a predetermined refractive-index profile for each of the electrode groups, and is configured to shift the voltage pattern according to information of a viewpoint position of an observer so as to shift the refractive-index profile of each of the lenses.Type: ApplicationFiled: December 4, 2013Publication date: June 5, 2014Applicant: NLT Technologies, Ltd.Inventor: Sounosuke TAKAHASHI
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Patent number: 8743037Abstract: A color field-sequential liquid crystal display device comprising: a liquid crystal panel; a planar light-source unit for emitting light toward the liquid crystal panel; and a signal processor connected to the liquid crystal panel and to the planar light-source unit; wherein the signal processing includes: a comparing unit that compares video signals included in subframes of at least one identical color in each frame of two mutually adjacent video frames; and a polarity reversing unit that reverses the polarities of video signals in mutually adjacent subframes within the same frame, deciding whether or not to reverse the polarities of all video signals of one frame based upon the result of the comparison by the comparing unit, and outputting a video signal having the decided polarity to the liquid crystal panel.Type: GrantFiled: November 4, 2008Date of Patent: June 3, 2014Assignee: NLT Technologies, Ltd.Inventor: Kazunori Masumura