Patents by Inventor Masaaki Kabe

Masaaki Kabe 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).

  • Patent number: 9837012
    Abstract: A display device 10 includes are arranged in a matrix form and to which image information is input, and a signal processing unit 20. The signal processing unit 20 includes a rendering position deciding unit that decides whether or not a sub-pixel rendering process of changing input signal values of sub-pixels of a second pixel among a first pixel, the second pixel, and the third pixel is performed, a pattern information acquiring unit that acquires an arrangement of the sub-pixels in a processing direction of either of a portrait mode and a landscape mode as pattern information indicating a first arrangement pattern or a second arrangement pattern, and a rendering unit that performs a first sub-pixel rendering process or a second sub-pixel rendering process on the input signals of the sub-pixels of the second pixel based on the decision of the rendering position deciding unit and the pattern information.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: December 5, 2017
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Masaaki Kabe, Akira Sakaigawa
  • Patent number: 9830886
    Abstract: According to an aspect, a display device includes an image display panel in which pixels each including first to fourth sub-pixels are arranged in a two-dimensional matrix; and a signal processing unit that converts an input signal into an output signal and outputs the generated output signal to the image display panel. The signal processing unit determines an expansion coefficient, obtains a generated signal of the fourth sub-pixel in each pixel based on input signals of the first to the third sub-pixels in the pixel itself and the expansion coefficient, obtains an output signal for the fourth sub-pixel in each pixel based on a generated signal of the fourth sub-pixel in the pixel itself and a generated signal of the fourth sub-pixel in an adjacent pixel to be output to the fourth sub-pixel.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Amane Higashi, Toshiyuki Nagatsuma, Akira Sakaigawa, Masaaki Kabe
  • Publication number: 20170330530
    Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.
    Type: Application
    Filed: July 12, 2017
    Publication date: November 16, 2017
    Inventors: Kojiro Ikeda, Toshiyuki Nagatsuma, Masaaki Kabe, Amane Higashi, Tae Kurokawa, Fumitaka Gotoh, Akira Sakaigawa
  • Patent number: 9818352
    Abstract: Disclosed herein is a display apparatus including: a first pixel including three sub-pixels for displaying three primary colors respectively; and a second pixel including three sub-pixels for displaying two colors selected among the three primary colors and a predetermined color other than the three primary colors, wherein, in the first pixel, the size of the display surface of a sub-pixel for displaying a specific color included in the three primary colors as a specific color missing from the second pixel is larger than each of the sizes of the display surfaces of the two other sub-pixels for displaying the two other primary colors respectively.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: November 14, 2017
    Assignee: Japan Display Inc.
    Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
  • Publication number: 20170315279
    Abstract: An image display apparatus including an image display panel that includes: a first color filter for passing light of a first primary and first auxiliary pixels for displaying the first primary; a second color filter for passing light of a second primary and second auxiliary pixels for displaying the second primary; a third color filter for passing light of a third primary and third auxiliary pixels for displaying the third primary; and fourth auxiliary pixels for displaying a fourth color; the first auxiliary pixels, the second auxiliary pixels, the third auxiliary pixels, and the fourth auxiliary pixels being arranged in a two-dimensional matrix, and a light shielding region disposed at least partly around the peripheral edge of each of the fourth auxiliary pixels.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Yasuyuki Matsui, Masaaki Kabe, Akira Sakaigawa, Koji Noguchi, Kenta Seki
  • Publication number: 20170287989
    Abstract: According to an aspect, a display device includes a display unit in which a plurality of pixels are arranged in a matrix along two directions intersecting with each other. Each of the pixels includes three sub-pixels corresponding to three of four colors including a first color, a second color, a third color, and a fourth color. An area of one sub-pixel among the three sub-pixels is larger than the area of each of the other two sub-pixels. A sub-pixel of the fourth color is one of the other two sub-pixels. Pixels each including the sub-pixel of the fourth color are not adjacent to each other in at least one of the two directions in the display unit.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Masaaki KABE, Kojiro IKEDA, Tsutomu HARADA, Akira SAKAIGAWA
  • Publication number: 20170287438
    Abstract: According to an aspect, a display device includes: a display panel including a plurality of pixels; at least three of a first sub-pixel in a first color, a second sub-pixel in a second color, a third sub-pixel in a third color, and a fourth sub-pixel in a fourth color, the three sub-pixels being included in each of the pixels; and a controller configured to input an input signal to the first sub-pixel to the fourth sub-pixel. When display is performed in a plurality of display regions in respective single colors adjacent to each other in the display panel, the controller inputs a signal for lighting a sub-pixel that does not contribute to one of the single colors in a halftone manner, in a pixel included in a boundary section of the adjacent display regions.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Kojiro Ikeda, Masaaki Kabe, Akira Sakaigawa
  • Publication number: 20170285415
    Abstract: According to an aspect, a liquid crystal display device includes: a first substrate provided with a first electrode portion that includes a plurality of strip electrodes arranged in a first direction and that is configured to generate a transverse electric field in the first direction; a liquid crystal layer in which liquid crystal molecules are oriented in the first direction when the transverse electric field is not generated; a second substrate facing the first substrate across the liquid crystal layer; and an electrode provided at the second substrate.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Masaaki KABE, Kojiro IKEDA, Shinichiro OKA
  • Publication number: 20170287983
    Abstract: A display device includes a display unit in which pixels are arranged in a matrix. The pixels each include a first sub-pixel having the largest area among sub-pixels, a second sub-pixel adjacent to the first sub-pixel and having an area smaller than that of the first sub-pixel, and a third sub-pixel adjacent to the first and second sub-pixels, having an area smaller than that of the first sub-pixel, and arranged in the same column as that of second sub-pixels. First, second, and third pixels are aligned in at least one of a column direction or a row direction and each include the first, second, and third sub-pixels that can display different one of first, second, and third colors. Areas of the first, second, and third colors displayable by the first, second, and third pixels in total are equal to one another.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Masaaki KABE, Hidemasa YAMAGUCHI, Kojiro IKEDA, Akira SAKAIGAWA
  • Patent number: 9773470
    Abstract: A display device includes: an image display panel including a plurality of pixels each including first to fourth sub-pixels; and a signal processing unit. The signal processing unit determines an expansion coefficient related to the image display panel, obtains output signals of the first to the third sub-pixels based on at least input signals of the first to the third sub-pixels and the expansion coefficient to be output to the first to the third sub-pixels respectively, obtains a fourth sub-pixel correction value as a correction value of an output signal of the fourth sub-pixel based on the input signals of the first to the third sub-pixels and the expansion coefficient, and obtains the output signal of the fourth sub-pixel based on the input signals of the first to third sub-pixels, the expansion coefficient, and the fourth sub-pixel correction value to be output to the fourth sub-pixel.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: September 26, 2017
    Assignee: Japan Display Inc.
    Inventors: Tae Kurokawa, Akira Sakaigawa, Masaaki Kabe, Kojiro Ikeda, Fumitaka Gotoh, Amane Higashi, Toshiyuki Nagatsuma
  • Patent number: 9746594
    Abstract: An image display apparatus including an image display panel that includes: a first color filter for passing light of a first primary and first auxiliary pixels for displaying the first primary; a second color filter for passing light of a second primary and second auxiliary pixels for displaying the second primary; a third color filter for passing light of a third primary and third auxiliary pixels for displaying the third primary; and fourth auxiliary pixels for displaying a fourth color; the first auxiliary pixels, the second auxiliary pixels, the third auxiliary pixels, and the fourth auxiliary pixels being arranged in a two-dimensional matrix, and a light shielding region disposed at least partly around the peripheral edge of each of the fourth auxiliary pixels.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 29, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yasuyuki Matsui, Masaaki Kabe, Akira Sakaigawa, Koji Noguchi, Kenta Seki
  • Patent number: 9728161
    Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: August 8, 2017
    Assignee: Japan Display Inc.
    Inventors: Kojiro Ikeda, Toshiyuki Nagatsuma, Masaaki Kabe, Amane Higashi, Tae Kurokawa, Fumitaka Gotoh, Akira Sakaigawa
  • Patent number: 9721996
    Abstract: A display device includes a display unit in which pixels are arranged in a matrix. The pixels each include a first sub-pixel having the largest area among sub-pixels, a second sub-pixel adjacent to the first sub-pixel and having an area smaller than that of the first sub-pixel, and a third sub-pixel adjacent to the first and second sub-pixels, having an area smaller than that of the first sub-pixel, and arranged in the same column as that of second sub-pixels. First, second, and third pixels are aligned in at least one of a column direction or a row direction and each include the first, second, and third sub-pixels that can display different one of first, second, and third colors. Areas of the first, second, and third colors displayable by the first, second, and third pixels in total are equal to one another.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 1, 2017
    Assignee: Japan Display Inc.
    Inventors: Masaaki Kabe, Hidemasa Yamaguchi, Kojiro Ikeda, Akira Sakaigawa
  • Publication number: 20170193932
    Abstract: A driving method for an image display apparatus which includes an image display panel having a plurality of pixels arrayed in a two-dimensional matrix and each configured from 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, and a signal processing section. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, a third subpixel output signal, and a fourth subpixel output signal. The driving method includes a step of calculating a maximum value (Vmax(S)) of brightness, a saturation (S) and brightness (V(S)), and determining the expansion coefficient (?0).
    Type: Application
    Filed: March 2, 2017
    Publication date: July 6, 2017
    Inventors: Masaaki Kabe, Amane Higashi, Yasuo Takahashi, Akira Sakaigawa
  • Patent number: 9691827
    Abstract: According to an aspect, a display device includes a display unit in which a plurality of pixels are arranged in a matrix along two directions intersecting with each other. Each of the pixels includes three sub-pixels corresponding to three of four colors including a first color, a second color, a third color, and a fourth color. An area of one sub-pixel among the three sub-pixels is larger than the area of each of the other two sub-pixels. A sub-pixel of the fourth color is one of the other two sub-pixels. Pixels each including the sub-pixel of the fourth color are not adjacent to each other in at least one of the two directions in the display unit.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 27, 2017
    Assignee: Japan Display Inc.
    Inventors: Masaaki Kabe, Kojiro Ikeda, Tsutomu Harada, Akira Sakaigawa
  • Patent number: 9679535
    Abstract: A display device includes a conversion section which generate a data conversion signal including a first number of bits from an input signal, an error dispersion section which generates a display control signal including a second number of bits that is smaller than the first number of bits from the data conversion signal and which spatially disperses errors that occur at the time of generating the display control signal, and a display panel section which displays an image on the basis of the display control signal.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 13, 2017
    Assignee: Japan Display Inc.
    Inventors: Akira Sakaigawa, Toshiyuki Nagatsuma, Amane Higashi, Masaaki Kabe
  • Publication number: 20170160571
    Abstract: According to one embodiment, a liquid crystal device includes a first substrate including a first electrode and a second electrode opposed to the first electrode, a second substrate opposed to the first substrate, and a liquid crystal layer including liquid crystal molecules held between the first substrate and the second substrate, wherein the second electrode is positioned closer to the liquid crystal layer than is the first electrode and has a polygonal-shaped first opening including at least one projection, and the liquid crystal layer indicates transparency when no voltage is applied thereto and indicates scattering when a voltage is applied thereto.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 8, 2017
    Applicant: Japan Display Inc.
    Inventors: Kojiro IKEDA, Masaaki KABE, Shinichiro OKA, Akira SAKAIGAWA
  • Patent number: 9666114
    Abstract: 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: Grant
    Filed: July 2, 2014
    Date of Patent: May 30, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Amane Higashi, Akira Sakaigawa, Masaaki Kabe, Yasuo Takahashi
  • Patent number: 9633614
    Abstract: According to an aspect, a display device includes an image display panel and a signal processing unit. The signal processing unit derives a generation signal for a fourth sub-pixel in each of pixels based on an input signal for a first sub-pixel, an input signal for a second sub-pixel, an input signal for a third sub-pixel, and an extension coefficient. The signal processing unit derives a correction value based on a hue of an input color corresponding to a color to be displayed based on the input signal for the first sub-pixel, the input signal for the second sub-pixel, and the input signal for the third sub-pixel. The signal processing unit derives the output signal for the fourth sub-pixel in each of the pixels based on the generation signal for the fourth sub-pixel and the correction value and outputs the output signal to the fourth sub-pixel.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: April 25, 2017
    Assignee: Japan Display Inc.
    Inventors: Masaaki Kabe, Fumitaka Gotoh, Kazuhiko Sako, Toshiyuki Nagatsuma, Kojiro Ikeda, Tsutomu Harada
  • Publication number: 20170110072
    Abstract: Disclosed herein is a display apparatus including: a first pixel including three sub-pixels for displaying three primary colors respectively; and a second pixel including three sub-pixels for displaying two colors selected among the three primary colors and a predetermined color other than the three primary colors, wherein, in the first pixel, the size of the display surface of a sub-pixel for displaying a specific color included in the three primary colors as a specific color missing from the second pixel is larger than each of the sizes of the display surfaces of the two other sub-pixels for displaying the two other primary colors respectively.
    Type: Application
    Filed: December 30, 2016
    Publication date: April 20, 2017
    Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki