Patents by Inventor Masaya Tamaki

Masaya Tamaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160223861
    Abstract: According to an aspect, a display device includes: a display surface on which pixels each including sub-pixels of a plurality of colors are two-dimensionally arrayed; a reflective member; a first substrate provided with the reflective member; a second substrate arranged to face the first substrate; a color filter provided with filters of at least two colors corresponding to the sub-pixels; and a scattering member provided on the second substrate. A main viewing angle direction of the display device is a direction intersecting with the display surface. The color filter is formed such that a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the main viewing angle direction in a direction parallel to the display surface.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: Masaya Tamaki, Yoko FUKUNAGA, Masashi MITSUI, Susumu KIMURA
  • Publication number: 20160195752
    Abstract: A semi-transmissive display apparatus including: a reflective electrode provided for each pixel, wherein the semi-transmissive display apparatus performs reflective display operation by using the reflective electrodes and transmissive display operation by using spaces between the reflective electrodes of the pixels.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Masaya Tamaki, Kazuyuki Maeda
  • Patent number: 9377658
    Abstract: According to an aspect, a liquid crystal display device includes a first electrode having a plurality of electrode base portions that extend in a first direction; a plurality of first comb-shaped portions that protrude from each of the plurality of electrode base portions in a second direction; and a plurality of second comb-shaped portions that protrude from each of the plurality of electrode base portions in an opposite direction to the second direction. Front edges of the first comb-shaped portions and the second comb-shaped portions that extend from the adjacent electrode base portions face each other with a gap therebetween, respectively. Transmission ineffective areas are formed at portions between the front edges facing each other, respectively, and not continuously aligned.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 28, 2016
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Toshiharu Matsushima
  • Patent number: 9378687
    Abstract: A display apparatus includes: a plurality of sub pixels that are included in a single pixel, that respectively perform a predetermined display based on a voltage which is supplied using a first electrode and a second electrode and display colors which are different from each other, wherein the plurality of sub pixels include areas which are different from each other, and respectively include pixels which have memory properties.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: June 28, 2016
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Tatsuya Yata
  • Patent number: 9348172
    Abstract: According to an aspect, a transflective liquid crystal display device includes: a first substrate on which reflective electrodes are arranged for pixels; a second substrate on which a transparent electrode is provided; a liquid crystal layer between the first and the second substrates; and a color filter that is provided closer to the transparent electrode than the reflective electrodes, and includes filters of a plurality of colors. The first substrate is provided with a first space between reflective electrodes of adjacent pixels and a second space between reflective electrodes of adjacent pixels, the first space extending in a first direction and overlapping a border between filters of different colors, the second space extending in a second direction and having transmittance higher than that of the first space. Transmissive display is performed by using the second space where a light shielding member is not positioned.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: May 24, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoko Fukunaga, Masaya Tamaki
  • Patent number: 9335580
    Abstract: According to an aspect, a display device includes: a display surface on which pixels each including sub-pixels of a plurality of colors are two-dimensionally arrayed; a reflective member; a first substrate provided with the reflective member; a second substrate arranged to face the first substrate; a color filter provided with filters of at least two colors corresponding to the sub-pixels; and a scattering member provided on the second substrate. A main viewing angle direction of the display device is a direction intersecting with the display surface. The color filter is formed such that a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the main viewing angle direction in a direction parallel to the display surface.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: May 10, 2016
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Yoko Fukunaga, Masashi Mitsui, Susumu Kimura
  • Patent number: 9323121
    Abstract: A semi-transmissive display apparatus includes: a reflective electrode provided for each pixel, wherein the semi-transmissive display apparatus performs reflective display operation by using the reflective electrodes and transmissive display operation by using spaces between the reflective electrodes of the pixels.
    Type: Grant
    Filed: June 2, 2012
    Date of Patent: April 26, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masaya Tamaki, Kazuyuki Maeda
  • Patent number: 9305520
    Abstract: An image display apparatus includes: a grayscale conversion device configured to perform grayscale conversion processing on input data to output data; and a display device configured to operate in accordance with the output data to display an image by pixels arranged in a two-dimensional matrix state, wherein the grayscale conversion device is configured to perform first error diffusion processing for converting N0-grayscale input data into N1-grayscale data (2<N1<N0), to perform second error diffusion processing for converting data having a predetermined grayscale or less into lower grayscale data having N2 grayscales (1<N2<N1), to perform third error diffusion processing for converting data having the predetermined grayscale or more into higher grayscale data having N3 grayscales (1<N3<N1), and to combine the lower grayscale data and the higher grayscale data to generate N4-grayscale output data (1<N4<N1).
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: April 5, 2016
    Assignee: Japan Display Inc.
    Inventors: Amane Higashi, Tsutomu Harada, Yasuyuki Teranishi, Masaya Tamaki
  • Patent number: 9291851
    Abstract: A display capable of obtaining high luminance in white display and an electronic unit are provided. The display includes: a reflective display panel; and an optical laminate disposed on the display panel, in which the optical laminate includes a plurality of anisotropic scattering films, and transmittances in a scattering central axis direction of two or more films of the plurality of anisotropic scattering films are different from each other.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: March 22, 2016
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Yoko Fukunaga
  • Publication number: 20160078828
    Abstract: According to an aspect, a display device includes: an image display panel in which pixel units each including a first pixel including a first, a second, and a third sub pixels, and a second pixel including the first, the second, and a fourth sub pixels are periodically arranged; and a signal processing unit. The signal processing unit obtains a corrected output signal of the third sub pixel of the first pixel based on an input signal of the third sub pixel of the first pixel and an input signal of the third sub pixel of the second pixel of the same pixel unit, and obtains a corrected output signal of the fourth sub pixel of the second pixel based on an input signal of the fourth sub pixel of the first pixel of the same pixel unit and an input signal of the fourth sub pixel of the second pixel.
    Type: Application
    Filed: September 15, 2015
    Publication date: March 17, 2016
    Inventors: Masaya Tamaki, Amane Higashi
  • Publication number: 20160078827
    Abstract: According to an aspect, an image display panel includes: a first pixel including (d-1) sub pixels, which are first to (d-2)-th sub pixels and a (d-1)-th sub pixel, and a second pixel that is adjacent to the first pixels and includes (d-1) sub pixels, which are first to (d-2)-th sub pixels and a d-th sub pixel. A region of the image display panel includes a first pixel display region and a second pixel display region. The first to (d-2)-th sub pixels of the first pixel, one part of the (d-1)-th sub pixel, and one part of the d-th sub pixel are arranged in the first pixel display region. The first to (d-2)-th sub pixels of the second pixel, the other part of the (d-1)-th sub pixel, and the other part of the d-th sub pixel are arranged in the second pixel display region.
    Type: Application
    Filed: September 15, 2015
    Publication date: March 17, 2016
    Inventors: Masaya Tamaki, Amane Higashi
  • Publication number: 20160077394
    Abstract: A pixel array substrate structure includes: first and second planarizing films sequentially stacked on a substrate where a circuit unit is formed; and a relay wire formed between the first and second planarizing films, in which the relay wire electrically connects a first contact portion formed on the first planarizing film and connected to the circuit unit with a second contact portion formed at a position different from the first contact portion when seen from above, on the second planarizing film.
    Type: Application
    Filed: November 30, 2015
    Publication date: March 17, 2016
    Inventors: Koichi Nagasawa, Masaya Tamaki, Shuji Hayashi, Masaaki Kabe, Yoko Fukunaga
  • Publication number: 20160077374
    Abstract: A display device includes a reflective image display unit having a sheet-like anisotropic scattering member. The sheet-like anisotropic scattering member has a surface in which both a low refractive index area and a high refractive index area exist. The sheet-like anisotropic scattering member is disposed so that a light enters from a first surface thereof and exits as scattered light from a second surface thereof, when an extent of refractive index difference at a boundary or vicinity thereof between the low refractive index area and the high refractive index area is relatively large in the first surface and relatively small in the second surface.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 17, 2016
    Inventors: Masaya TAMAKI, Masashi MITSUI, Yoko FUKUNAGA
  • Publication number: 20160070140
    Abstract: A display capable of obtaining high luminance in white display and an electronic unit are provided. The display includes: a reflective display panel; and an optical laminate disposed on the display panel, in which the optical laminate includes a plurality of anisotropic scattering films, and transmittances in a scattering central axis direction of two or more films of the plurality of anisotropic scattering films are different from each other.
    Type: Application
    Filed: November 12, 2015
    Publication date: March 10, 2016
    Inventors: Masaya Tamaki, Yoko Fukunaga
  • Patent number: 9280015
    Abstract: A liquid crystal display device includes a first substrate provided with a reflective electrode, a second substrate provided with a transparent electrode oppositely disposed to the reflective electrode, a liquid crystal layer disposed between the first second substrates, a polarization plate oppositely disposed to the first substrate with an interposition of the second substrate, and an anisotropic scattering member disposed between the second substrate and the polarization plate. A main view angle direction is set as a predetermined direction intersecting a display surface. The anisotropic scattering member has a scattering center and scatters light traveling along a scattering axis direction which is a direction having a predetermined angle range centered around the scattering center. The scattering axis direction coincides with the main view angle direction.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 8, 2016
    Assignee: Japan Display Inc.
    Inventors: Masashi Mitsui, Masaya Tamaki, Yoko Fukunaga
  • Patent number: 9274365
    Abstract: An anisotropic scatterer is configured to allow a scattering characteristic of light in a display region of a display device to have an angle dependence, and is configured to change the scattering characteristic of the light continuously in an in-plane direction.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 1, 2016
    Assignees: Japan Display Inc., Tomoegawa Co., Ltd.
    Inventors: Masaya Tamaki, Tatsuya Yata, Yoko Fukunaga, Masashi Mitsui, Hiroto Katagiri, Masahide Sugiyama
  • Patent number: 9223169
    Abstract: A display device includes a reflective image display unit having a sheet-like anisotropic scattering member. The sheet-like anisotropic scattering member has a surface in which both a low refractive index area and a high refractive index area exist. The sheet-like anisotropic scattering member is disposed so that a light enters from a first surface thereof and exits as scattered light from a second surface thereof, when an extent of refractive index difference at a boundary or vicinity thereof between the low refractive index area and the high refractive index area is relatively large in the first surface and relatively small in the second surface.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 29, 2015
    Assignee: Japan Display Inc.
    Inventors: Masaya Tamaki, Masashi Mitsui, Yoko Fukunaga
  • Patent number: 9224759
    Abstract: A pixel array substrate structure includes: first and second planarizing films sequentially stacked on a substrate where a circuit unit is formed; and a relay wire formed between the first and second planarizing films, in which the relay wire electrically connects a first contact portion formed on the first planarizing film and connected to the circuit unit with a second contact portion formed at a position different from the first contact portion when seen from above, on the second planarizing film.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: December 29, 2015
    Assignee: Japan Display Inc.
    Inventors: Koichi Nagasawa, Masaya Tamaki, Shuji Hayashi, Masaaki Kabe, Yoko Fukunaga
  • Publication number: 20150355493
    Abstract: According to an aspect, a semi-transmissive liquid crystal display device includes a plurality of pixels arranged in a matrix, a plurality of reflective electrodes, a counter electrode facing the reflective electrode, and a liquid crystal layer. The reflective electrodes are provided for each of the pixels, and each of them includes a plurality of electrodes, with a combination of the areas of which area coverage modulation is performed by using n bits. The electrodes are configured such that a ratio of the sum of the perimeter(s) of electrode(s) corresponding to each bit of the n bits satisfies 1:2: . . . :2n?1. The liquid crystal layer is provided between the reflective electrode and the counter electrode. The semi-transmissive liquid crystal display device is configured to carry out reflective display using the reflective electrode and carry out transmissive display using at least a space of the reflective electrode between the pixels.
    Type: Application
    Filed: August 19, 2015
    Publication date: December 10, 2015
    Inventors: Masaya TAMAKI, Kazuyuki MAEDA
  • Patent number: 9208744
    Abstract: According to an aspect, a display device includes a liquid crystal layer, a transparent electrode, a reflective electrode, a drive circuit, and a controller. The controller is configured to switch a mode between a first mode for driving the drive circuit at a liquid-crystal inversion frequency of a first frequency so that screen display using light reflected by the reflective electrode is performed and a second mode for driving the drive circuit at a liquid-crystal inversion frequency of a second frequency higher than the first frequency so that screen display using light passing through the opening of the reflective electrode is performed.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: December 8, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yoko Fukunaga, Masaya Tamaki, Takayuki Nakanishi, Yasuyuki Teranishi