Patents Assigned to Japan Display West Inc.
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Patent number: 8810757Abstract: A liquid crystal display device of the present invention comprises an array substrate equipped with signal lines and scan lines deployed in a matrix arrangement, thin film transistors (TFTs) provided near the intersections of the signal lines and scan lines, and pixel electrodes of which one is provided in each of the pixel domains delimited by the signal lines and scan lines; a color filter substrate on which are formed color filters and common electrodes; and a liquid crystal layer placed between said two substrates; wherein the pixel electrodes are positioned so as not to overlap the signal lines, or not to overlap the scan lines, or not to overlap either, when viewed from above, and below the spaces between adjacent pixel electrodes, resin black matrices are deployed so as to overlap the pixel electrodes when viewed from above.Type: GrantFiled: September 4, 2013Date of Patent: August 19, 2014Assignee: Japan Display West Inc.Inventors: Hiroki Sugiyama, Shinichiro Nomura, Takayuki Kato, Satoshi Morita
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Patent number: 8810495Abstract: The present application provides a display device having a pixel circuit including: a pixel electrode; a capacitive element configured to be connected to the pixel electrode of liquid crystal capacitance and hold a signal potential reflecting a grayscale; and an inverter circuit configured to invert polarity of a held potential read out from the capacitive element, wherein input potential of the inverter circuit is set to middle potential in an operating supply voltage range of the inverter circuit in operation of inverting the polarity of the held potential and writing an inverted potential to the capacitive element again after reading out the held potential from the capacitive element.Type: GrantFiled: June 14, 2011Date of Patent: August 19, 2014Assignee: Japan Display West Inc.Inventor: Yasuyuki Teranishi
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Patent number: 8810553Abstract: A liquid crystal display (LCD) 1 according to an embodiment of the present invention includes a liquid crystal panel having a TFT substrate 2, a CF substrate 25, and a liquid crystal layer 14 interposed between the two substrates; a TFT ambient light photosensor having a semiconductor layer 19L for detecting external light; a photodetector unit LS1 having a capacitor Cw in which a predetermined reference voltage is charged and a voltage charged by leakage current of the TFT ambient light photosensor is lowered; and an ambient light photosensor reader unit Re1 for reading a voltage charged in the capacitor for a predetermined read period. The photodetector unit is disposed on a first surface of the TFT substrate 2 that is in contact with the liquid crystal layer, and the surface of the photodetector unit except for the semiconductor layer 19L and its periphery is covered by a light-shielding layer 21.Type: GrantFiled: March 30, 2007Date of Patent: August 19, 2014Assignee: Japan Display West Inc.Inventors: Yutaka Sano, Takashi Kunimori, Toshihiko Tanaka, Masanori Yasumori
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Patent number: 8810613Abstract: Disclosed herein is a driving method for an image display apparatus which includes an image display panel and a signal processing section. Each of the pixels includes a first subpixel for displaying a first primary color, a second subpixel for displaying a second primary color, a third subpixel for displaying a third primary color and a fourth subpixel for displaying a fourth color. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, and a third subpixel output signal. The driving method includes the step, further carried out by the signal processing section, of calculating a fourth subpixel output signal based on a fourth subpixel control second signal and a fourth subpixel control first signal, and outputting the calculated fourth subpixel output signal to the fourth subpixel of the (p,q)th pixel.Type: GrantFiled: January 14, 2011Date of Patent: August 19, 2014Assignee: Japan Display West Inc.Inventors: Amane Higashi, Akira Sakaigawa, Masaaki Kabe, Yasuo Takahashi
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Patent number: 8810742Abstract: A display apparatus includes: a display unit that displays a two-dimensional image; and a variable lens array disposed to face the display unit, wherein the variable lens array includes a variable phase difference layer that receives incident linearly polarized light polarized in a first direction and allows the linearly polarized light polarized in the same direction to exit or allows linearly polarized light polarized in a second direction switched from the first direction and different therefrom to exit, and an optically anisotropic layer that receives the light having exited out of the variable phase difference layer and works as a lens array for one of the light polarized in the first direction and the light polarized in the second direction whereas working as a transparent layer for the other light.Type: GrantFiled: June 20, 2012Date of Patent: August 19, 2014Assignee: Japan Display West, Inc.Inventors: Tsuyoshi Ohyama, Daisuke Takama
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Publication number: 20140225866Abstract: A touch detection device includes: a plurality of drive electrodes; a plurality of detection electrodes intersecting the plurality of drive electrodes, and each outputting, in response to driving of each of the drive electrodes, a series of detection signals; a signal correction section determining a reference based on the detection signals, and subtracting the determined reference from each of the detection signals; and a detecting section detecting an external proximity object based on corrected detection signals provided from the signal correction section.Type: ApplicationFiled: April 15, 2014Publication date: August 14, 2014Applicant: JAPAN DISPLAY WEST INC.Inventors: Koji NOGUCHI, Yoshitoshi KIDA
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Patent number: 8804084Abstract: A liquid crystal display panel is provides and includes a pair of substrates arranged face to face so as to sandwich a liquid crystal layer. The liquid crystal device includes on one of the pair of substrates: a lower electrode; an upper electrode formed on a surface of the lower substrate through an insulating layer, in which plural slits are formed in each sub-pixel; and an alignment film formed so as to cover a surface of the upper electrode and the insulating layer. The plural slits have different widths at both ends of slits in a longitudinal direction.Type: GrantFiled: December 22, 2010Date of Patent: August 12, 2014Assignee: Japan Display West Inc.Inventors: Aya Yoso, Joji Nishimura, Hayato Kurasawa
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Patent number: 8803858Abstract: A display device includes: a plurality of drive electrodes extending in a first direction and arranged side-by-side in a second direction with an inter-electrode slit in between; and a plurality of pixel electrodes arranged in matrix in the first and second directions. Each of the drive electrodes has one or more inner-electrode slits, and a center of the pixel electrode is located in the inter-electrode slit or in the inner-electrode slit.Type: GrantFiled: August 17, 2011Date of Patent: August 12, 2014Assignee: Japan Display West Inc.Inventors: Koji Noguchi, Eiji Sakai, Masanobu Ikeda, Koji Ishizaki
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Patent number: 8804089Abstract: A display device including: a first substrate with a pixel switch and drivers mounted thereon; a second substrate disposed in facing relation to the first substrate; a material layer held between the first substrate and the second substrate and having peripheral edges sealed by a seal member, the material layer having an electrooptical effect; and a semiconductor chip mounted as a COG component on the first substrate, the semiconductor chip having a control system configured to control the drivers; wherein the semiconductor chip having a thickness equal to the total thickness of the seal member and the second substrate or larger than the thickness of the seal member and smaller than the total thickness.Type: GrantFiled: August 17, 2012Date of Patent: August 12, 2014Assignee: Japan Display West Inc.Inventor: Masumitsu Ino
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Patent number: 8797275Abstract: An HPF eliminates an image of an object which is not to be detected from a captured image, thereby obtaining an HPF image. A binarizing unit performs a binarizing process on the HPF image, thereby generating a binary image. A peak detector extracts, using the binary image as a mask, an image of a region corresponding to an opening of the mask from the captured image. From the image, a peak value and the position of a peak pixel are detected. A determining unit determines whether an object to be detected is in contact with the display surface or not on the basis of the relation between the difference and the threshold. Using the detection result and the determination result in the determining unit, a position deriving unit derives the position on the display surface, of the object to be detected which is in contact with the display surface.Type: GrantFiled: February 11, 2009Date of Patent: August 5, 2014Assignee: Japan Display West Inc.Inventors: Ryoichi Tsuzaki, Tsutomu Harada, Kazunori Yamaguchi, Mitsuru Tateuchi
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Patent number: 8797473Abstract: An electro-optical device includes a frame including a conduction part and a resin part, an electro-optical panel that is housed in the inner side of the resin part, and an exposure part that is formed by exposing the conduction part from the resin part. The exposure part is disposed to face at least a part of an end face of the electro-optical panel or protrude from a surface of the electro-optical panel over the end face.Type: GrantFiled: July 24, 2008Date of Patent: August 5, 2014Assignee: Japan Display West Inc.Inventor: Kazunori Takabayashi
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Patent number: 8791916Abstract: There are provide a display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.Type: GrantFiled: March 7, 2012Date of Patent: July 29, 2014Assignee: Japan Display West, Inc.Inventors: Hiroshi Mizuhashi, Yoshitoshi Kida, Koji Noguchi
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Publication number: 20140204060Abstract: A touch sensor that may detect an object away from the sensor is provided. The touch sensor includes one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect the object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes.Type: ApplicationFiled: March 26, 2014Publication date: July 24, 2014Applicant: Japan Display West Inc.Inventors: Koji ISHIZAKI, Kouji NOGUCHI, Tsutomu HARADA, Takeya TAKEUCHI, Yoshitoshi KIDA, Takayuki NAKANISHI
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Patent number: 8786571Abstract: A liquid crystal display device includes a first substrate on a display surface side; a second substrate on a back surface side; a liquid crystal layer formed between the first and second substrates; an alignment film formed on one of the first and second substrates so as to contact the liquid crystal layer; a first sensor electrode formed on a surface, of the alignment film, contacting the liquid crystal layer; and a second sensor electrode formed on the other of the first and second substrates, and adapted to either contact or approach the first sensor electrode when the first substrate is pressed from the display surface side.Type: GrantFiled: August 3, 2009Date of Patent: July 22, 2014Assignee: Japan Display West Inc.Inventors: Takeo Koito, Koji Noguchi
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Patent number: 8786557Abstract: A common electrode 43 for display, which is originally provided in a liquid crystal display element, is also used as one (drive electrode) of a pair of electrodes for a touch sensor, and the other (detection-electrode-for-the-sensor 44) of the pair of electrodes is newly formed. An existing common drive signal Vcom as a drive signal for display is used in common for a drive signal for the touch sensor. A capacitance is formed between the common electrode 43 and the detection-electrode-for-the-sensor 44, and touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. Thus, a display device with a touch sensor is also applicable to a mobile device in which electric potential of the user is inconstant in many cases. The newly-provided electrode is only the detection-electrode-for-the-sensor 44, and it is unnecessary to newly prepare a drive signal for the touch sensor. Therefore, the configuration is simple.Type: GrantFiled: March 25, 2009Date of Patent: July 22, 2014Assignee: Japan Display West Inc.Inventors: Koji Noguchi, Daisuke Takama, Yoshitoshi Kida
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Patent number: 8786530Abstract: A display device includes: a liquid crystal display panel; and a driver circuit that drives the liquid crystal display panel. The liquid crystal display panel includes a liquid crystal layer, pixel electrodes provided in a region facing the liquid crystal layer and which apply a voltage thereto, and a phase difference layer and a polarizing plate each provided on a side, relative to the liquid crystal layer, which ambient light enters. Each of the pixel electrodes includes a plurality of partial electrodes, and the driver circuit selects one or more partial electrodes from the partial electrodes to which a constant voltage is to be applied in accordance with an image signal. The constant voltage causes the liquid crystal display panel to be in a white state. The driver circuit performs gray-scale display by modulating lighting area of each pixel at a frame rate of less than 60 Hz.Type: GrantFiled: June 13, 2012Date of Patent: July 22, 2014Assignee: Japan Display West Inc.Inventor: Masaya Tamaki
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Patent number: 8780025Abstract: Light reflecting layers 45a that totally reflect light are provided inside the subpixels 10 disposed in particular regions on an inner face of a TFT array substrate 4, and light reflecting layers 45b that scatter light are provided inside the subpixels 10 other than those. Thanks to this, the reflectance of the light reflecting layers 45a can be rendered different from that of the light reflecting layers 45b. As a result, differences can be created in the display light formed by the light reflecting layers 45a and by the light reflecting layers 45b, by means of the light that is reflected thereat. Thereby, fine adjustment of the display light brightness and contrast is enabled, so that a liquid crystal display device 1 with extensive power of expression and superior display characteristics is provided.Type: GrantFiled: January 14, 2008Date of Patent: July 15, 2014Assignee: Japan Display West Inc.Inventors: Toshinori Uehara, Kimitaka Kamijo, Keiji Takizawa, Tomoyuki Nakano, Kunio Maruyama, Hiroki Sugiyama
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Patent number: 8780284Abstract: A capacitive input device includes: an input device substrate having a position detection electrode on a second surface side which is reverse to a first surface side on which an input operation is performed; and a shielding film which has a shield electrode layer on a base film and is adhered to the second surface side of the input device substrate by an adhesive layer.Type: GrantFiled: December 20, 2010Date of Patent: July 15, 2014Assignee: Japan Display West Inc.Inventor: Takeshi Kurashima
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Patent number: 8780301Abstract: A liquid crystal display device of a transverse electric field type has characteristics in the following respects. A liquid crystal layer is sandwiched between two substrates. Two polarizing plates are provided on a side of the two substrates opposite to the liquid crystal layer such that the light transmission axes thereof are orthogonal to each other. A first electrode and a second electrode are formed on one of the two substrates. The liquid crystal is driven by an electric field generated between the first electrode and the second electrode. The polarizing plate, formed on one of the two substrates, is formed of a protective film, a polarizer, and two negative biaxial films. The two negative biaxial films include first and second negative biaxial films. The first negative biaxial film and the second negative biaxial film are entirely overlapped, and are disposed on a side of one or the other substrate.Type: GrantFiled: October 7, 2011Date of Patent: July 15, 2014Assignee: Japan Display West Inc.Inventors: Kojiro Ikeda, Tomoaki Sekime, Toshinori Uehara, Keiji Takizawa
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Patent number: 8773600Abstract: A liquid crystal lens is provided and includes a first electrode, a second electrode disposed opposite to the first electrode, and a liquid crystal layer, including liquid crystal molecules having refractive anisotropy, disposed between the first electrode and the second electrode, the liquid crystal molecules being changed in alignment depending on voltage applied by the first electrode and the second electrode, thereby to form such a phase difference distribution that phase difference with respect to an incident beam of a fundamental wavelength varies from 0 to 2?? along the predetermined direction, ? being an integer of 2 or more, and to yield such a lens effect that focal lengths for a plurality of incident beams of different wavelengths including the fundamental wavelength are equal to one another.Type: GrantFiled: February 8, 2011Date of Patent: July 8, 2014Assignee: Japan Display West Inc.Inventor: Daisuke Takama