Patents Assigned to NLT Technologies, Ltd.
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Patent number: 9470933Abstract: To provide a low-cost display device which can accurately detect a position touched by a finger. A display device displays an image by having display elements capable of performing electro-optic responses formed between conductible first and second substrates, and detects a contact position touched by a contact body by having a conductive impedance surface formed on the second substrate side. The display device includes: linearization pattern sections formed on the first substrate, which include a plurality of electrodes capable of detecting electric currents on a conductive impedance surface; and a conductive member which electrically connects the linearization pattern sections with the conductive impedance surface on the second substrate.Type: GrantFiled: January 16, 2014Date of Patent: October 18, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Jiro Yanase, Hiroshi Haga
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Publication number: 20160293659Abstract: Provided are an image sensor and a method of manufacturing method of manufacturing the image sensor. The image sensor includes a substrate, photoelectric transducers and switching elements formed in layers on the substrate in this order. Each of the photoelectric transducers includes a hydrogenated amorphous silicon layer. Each of the switching elements includes an amorphous oxide semiconductor layer. The image sensor further includes a blocking layer arranged between the hydrogenated amorphous silicon layers of the photoelectric transducers and the amorphous oxide semiconductor layers of the switching elements, where the blocking layer suppresses penetration of hydrogen separated from the hydrogenated amorphous silicon layers.Type: ApplicationFiled: June 22, 2016Publication date: October 6, 2016Applicant: NLT Technologies, Ltd.Inventors: Hiroyuki SEKINE, Takayuki ISHINO, Toru UKITA, Fuminori TAMURA, Kazushige TAKECHI
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Publication number: 20160282944Abstract: A tactile sense presentation device includes a panel that includes a support substrate, a plurality of electrodes, which are formed on the support substrate, extending in a predetermined direction, and an insulating layer covering the plurality of electrodes; and a drive unit that drives the panel, wherein a tactile sense is presented to an operator based on an electrostatic force generated between the electrodes and the operator by the drive unit applying a signal of a voltage to the electrode, a contact face of the insulating layer that is in contact with the operator has a surface roughness Ra of a predetermined range, and the voltage applied to the electrodes corresponding to an area in which the tactile sense is presented to the operator is a voltage corresponding to the surface roughness Ra of the contact face.Type: ApplicationFiled: March 25, 2016Publication date: September 29, 2016Applicant: NLT Technologies, Ltd.Inventors: Hiroshi HAGA, Daisuke SUGIMOTO
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Patent number: 9454945Abstract: A display device including a scanning circuit formed using single conductivity type thin-film transistors suppresses threshold changes in the thin-film transistors forming the scanning circuit by controlling a circuit for maintaining an internal node of the unit circuits forming the scanning circuit at a constant potential is controlled by a clock signal or a pulse signal having a smaller amplitude than the amplitude of an output signal.Type: GrantFiled: July 23, 2014Date of Patent: September 27, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventor: Tomohiko Otose
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Patent number: 9449566Abstract: 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 achieving a high image quality by suppressing deterioration in the display image quality caused when a block division driving method is employed, and to provide a terminal device, a display panel, and a driving method thereof, which can be preferably used for those devices. A pixel group configured with pixels for displaying a right-eye image includes a pixel connected to a data line phase-deployed in the first phase of a block division driving method, and a pixel connected to a data line phase-deployed in the third phase, and a pixel connected to a data line phase-deployed in the second phase. In this manner, it is designed to have no deviation in the phase deployment orders in the pixel groups for each viewpoint.Type: GrantFiled: August 4, 2015Date of Patent: September 20, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Shinichi Uehara, Tetsushi Satou
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Patent number: 9449564Abstract: To provide a hold-type display device having a fine luminance efficiency while suppressing generation of motion blur. A controller according to the invention adjusts a signal outputted to a hold-type image display panel, which includes: a double-speed drive converting part which divides one frame of an inputted video signal to a plurality of sub-frames; a color converting part which converts a video signal of three primary colors including the plurality of sub-frames to a video signal of four or more colors including the three primary colors and a compound color; and a sub-frame converting part which converts, the video signal converted by the color converting part, to a signal having a plurality of different gradations whose average luminance value becomes equivalent to luminance of the video signal converted by the color converting part, and takes each of the plurality of gradations as each of gradations of the plurality of sub-frames.Type: GrantFiled: April 30, 2013Date of Patent: September 20, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventor: Hiroaki Kimura
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Patent number: 9448447Abstract: A lateral electric field type liquid crystal display device includes substrates, liquid crystal put between the substrates, scan lines and data lines arranged on one of the substrates, and pixels each of whose boundary is defined by two scan lines and two data lines. In each pixel, a strip-shaped electrode and a common electrode are formed with an insulating film put thereamong, and the pixel electrode is arranged to extend close along one of the data lines. In each pixel, a part of the common electrode covering one of the data lines overlaps with the pixel electrode, the pixel electrode partially projects from the overlapping area, and a side edge of the projecting part of the pixel electrode is separated from a side edge of a part of the common electrode covering the other data line so as to generate a lateral electric field to drive the liquid crystal.Type: GrantFiled: September 5, 2013Date of Patent: September 20, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Hideki Ito, Shinichi Nishida, Takahiko Watanabe
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Publication number: 20160262273Abstract: To provide a display device of high quality and high reliability by securely sealing the gap between the bezel and the display panel even when variation is generated in the gap. The display device includes: a display panel including a display face; a bezel which includes a frame part and an aperture end that is on the inner side of the frame part, and covers the fringe of the display panel on the display face side by the frame part; a frontal panel provided by sandwiching the bezel on the display face side of the display panel; and a resin member provided along the whole circumference of the aperture end of the bezel. The resin member has a first resin member formed on the display face and a second resin member formed to cover over the first resin member and a surface of the bezel opposing to the frontal panel.Type: ApplicationFiled: March 4, 2016Publication date: September 8, 2016Applicant: NLT TECHNOLOGIES, LTD.Inventors: Akira FUJITA, Futoshi NAKANISHI, Hitoshi YOSHIDA, Akira SUZUKI
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Patent number: 9436024Abstract: To acquire a fine viewing angle property from oblique view fields in a lateral electric field type liquid crystal display device having liquid crystal initial alignment directions in two orthogonal directions. The absorption axis of the incident-side polarization plate and the absorption axis of the exit-side polarization plate are orthogonal to each other in both of the region I and the region II, and the liquid crystal layer, the in-cell retarder as an optical compensation layer, the A-plate, and the C-plate sandwiched therebetween are in parallel to either one of the absorption axes or orthogonal to the substrates. Therefore, the transmittance can be suppressed to be low and a fine black display can be acquired even when the display surface is viewed from the oblique view fields.Type: GrantFiled: March 1, 2013Date of Patent: September 6, 2016Assignee: NLT TECHNOLOGIES, LTDInventors: Shinichi Nishida, Hidenori Ikeno, Hideki Ito, Mitsuhiro Sugimoto
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Patent number: 9430977Abstract: The video signal processing circuit which analyzes video signals inputted from outside, performs conversion processing for image quality adjustment on the video signals based on a result of analysis, transmits those towards a video display unit includes: a feature value/maximum value calculation module which calculates a feature value that is a numerical value showing a degree of brightness of the video signals; a gradation conversion threshold value calculation module which calculates a threshold value regarding conversion of the gradation based on a threshold value calculation expression that is formed based on the feature value and a conversion coefficient set in advance; and a gradation conversion module which performs gradation conversion based on a linear function that increases linearly by taking a region of the gradation equal to or higher than the threshold value among the video signals as a target.Type: GrantFiled: August 7, 2014Date of Patent: August 30, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventor: Kouichi Ooga
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Publication number: 20160247441Abstract: An electro optical device has a pixel array constituted by pixels arranged in matrix, each pixel including four subpixels, the four subpixels including RGB subpixels and a subpixel of a similar color to a specific color among RGB, and the four subpixels being arranged in two rows and two columns. In each pixel, a first subpixel having the highest emission luminance and a second subpixel having the second highest emission luminance among subpixels needed for white display are arranged on one diagonal line of the pixel, and the other subpixels are arranged on the other diagonal line.Type: ApplicationFiled: February 19, 2016Publication date: August 25, 2016Applicant: NLT TECHNOLOGIES, LTD.Inventors: Yojiro MATSUEDA, Keita HAMADA
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Patent number: 9411077Abstract: Provided are a lenticular lens sheet capable of simultaneously achieving an improvement in visibility due to improving bonding accuracy, and low cost due to shape stabilization during processing the lens, a display apparatus and an electronic equipment including the same. The lenticular lens sheet includes a plurality of cylindrical lenses which extend in a direction parallel to each other; and an alignment mark which has two cylindrical lenses among the plurality of cylindrical lenses, a flat part disposed between the two cylindrical lenses, and a structure which is disposed on the flat part and extends between the two cylindrical lenses.Type: GrantFiled: July 15, 2015Date of Patent: August 9, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Jin Matsushima, Koji Shigemura
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Publication number: 20160223852Abstract: A liquid crystal display device includes: a liquid crystal panel; a light source unit; a chassis which holds the both; and a front frame which holds circumference of the front face side of the liquid crystal panel. The light source unit includes: a light guiding plate which outputs surface light; a light emitting body mounting board provided to the light guiding plate to hold a plurality of LEDs; and a rear frame having a light reflecting function and mounted to the back face side of the light guiding plate. The light source unit reinforcing plate is provided at least to the outer face of the rear frame, and the end part of the light source unit reinforcing plate on the light emitting body mounting board side is bent along the end part of the light guiding plate to be abutted against the light emitting body mounting board.Type: ApplicationFiled: January 29, 2016Publication date: August 4, 2016Applicant: NLT TECHNOLOGIES, LTD.Inventors: Hideki NISHIMURA, Kazuyuki SAITO
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Patent number: 9401382Abstract: Provided are an image sensor and a method of manufacturing method of manufacturing the image sensor. The image sensor includes a substrate, photoelectric transducers and switching elements formed in layers on the substrate in this order. Each of the photoelectric transducers includes a hydrogenated amorphous silicon layer. Each of the switching elements includes an amorphous oxide semiconductor layer. The image sensor further includes a blocking layer arranged between the hydrogenated amorphous silicon layers of the photoelectric transducers and the amorphous oxide semiconductor layers of the switching elements, where the blocking layer suppresses penetration of hydrogen separated from the hydrogenated amorphous silicon layers.Type: GrantFiled: October 31, 2014Date of Patent: July 26, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Hiroyuki Sekine, Takayuki Ishino, Toru Ukita, Fuminori Tamura, Kazushige Takechi
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Publication number: 20160210917Abstract: To provide a liquid crystal display device and the like capable of achieving a function with which the charging polarity for the liquid crystal panel is not deviated even when the frame rate for writing to the liquid crystal panel changes dynamically only with simple structures and low power consumption. A polarity inversion control circuit is for supplying polarity inversion signals to the liquid crystal panel, and it is characterized to switch the levels of the polarity inversion signals in such a manner that a difference between an integrated value of frame periods when the polarity inversion signal is in a first level and an integrated value of the frame periods when the polarity inversion signal is in a second level becomes small.Type: ApplicationFiled: January 19, 2016Publication date: July 21, 2016Applicant: NLT TECHNOLOGIES, LTD.Inventor: Hiroki ISHIKAWA
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Stereoscopic image display device, image processing device, and stereoscopic image processing method
Patent number: 9398290Abstract: Provided is a stereoscopic image display device and the like with which the issues of a CT-image and pseudoscopic view by the 3D crosstalk can be overcome so that a sense of discomfort is not felt by the observer even when the observing position of the observer is shifted without giving a sense of discomfort by a drastic change in the parallax value, in which an image processing unit includes: a relative position calculating unit which calculates a relative position of a stereoscopic display panel with respect to the measured observing position of the observer; a parallax adjustment amount calculating unit which calculates a parallax adjustment amount suited for stereoscopic image display according to the relative position; and a parallax adjustment processing unit which performs parallax adjustment processing on image data according to the parallax adjustment amount.Type: GrantFiled: July 31, 2013Date of Patent: July 19, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Takefumi Hasegawa, Koji Shigemura -
Patent number: 9389464Abstract: A transverse electric field-type liquid crystal display device displays by rotating homogeneous-aligned liquid crystals by a transverse electric field substantially parallel to a substrate, applied across a pixel electrode and a common electrode, assuring sufficient storage capacitance while enlarging the area of driving the liquid crystal molecules in a sub pixel. A source pixel electrode connected to a source electrode extends along the data line, a storage capacitance electrode formed by the same layer as the data line is formed above an adjacent scan line so as to overlap the adjacent scan line, the source pixel electrode is disposed so as to be connected to the storage capacitance electrode and a pixel along one side, an interlayer film is formed over the source pixel electrode, and a pixel electrode and a common electrode formed by a transparent conductive film are formed over the interlayer film.Type: GrantFiled: March 14, 2013Date of Patent: July 12, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Shinichi Nishida, Naoyuki Taguchi, Takahiko Watanabe
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Patent number: 9383613Abstract: Provided is a lateral-electric-field mode active matrix liquid crystal display device in which an afterimage can be improved. The width of one pixel comb electrode 109B of a plurality of pixel comb electrodes 109 is larger than each of the widths of the other pixel comb electrodes 109 and common comb electrodes 110 and is equivalent to the width of a common shield electrode 110B that covers an image signal wiring line 104 via a second insulating film. A display region is divided into two subregions by the wide pixel comb electrode 109B. In each subregion, the number of pixel comb electrodes 109 is equal to that of common comb electrodes 110. In addition, the width of the common shield electrode 110B is equivalent to that of the wide pixel comb electrode 109B, and the concentration of an electric field in the vicinity of each pixel comb electrode is reduced.Type: GrantFiled: July 4, 2013Date of Patent: July 5, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventor: Takayuki Konno
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Patent number: 9383510Abstract: The backlight unit whose luminance life can be extended without increasing the cost and the power consumption includes: a light source unit to which a light source is mounted; a light guide plate which converts light from the light source to a surface light beam and emits the beam; and supporting members provided between the light source unit and the light guide plate, wherein each of the supporting members is a member having a function of shortening the distance between the light source unit and the light guide plate by the changes generated over time.Type: GrantFiled: November 7, 2014Date of Patent: July 5, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventor: Shin-Ichirou Ono
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Patent number: 9378981Abstract: With a TFT using an oxide semiconductor film, there is such an issue that oxygen deficit is generated in a surface region of the oxide semiconductor film after performing plasma etching of a source/drain electrode, thereby increasing the off-current. Provided is a TFT which includes: a gate electrode on an insulating substrate; a gate insulating film on the gate electrode; an oxide semiconductor film containing indium on the gate insulating film; and a source/drain electrode on the oxide semiconductor film. Further, the peak position derived from an indium 3d orbital in the XPS spectrum of a surface layer in a part of the oxide semiconductor film where the source/drain electrode is not superimposed is shifted towards a high energy side than the peak position derived from the indium 3d orbital in the XPS spectrum of an oxide semiconductor region existing in a lower part of the surface layer.Type: GrantFiled: April 15, 2015Date of Patent: June 28, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Kazushige Takechi, Shinnosuke Iwamatsu, Seiya Kobayashi, Yoshiyuki Watanabe, Toru Yahagi