Patents by Inventor Akira Sakaigawa
Akira Sakaigawa 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).
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Publication number: 20190259311Abstract: 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: ApplicationFiled: May 1, 2019Publication date: August 22, 2019Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
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Patent number: 10373533Abstract: 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: GrantFiled: March 19, 2018Date of Patent: August 6, 2019Assignee: Japan Display Inc.Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
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Patent number: 10354615Abstract: 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: GrantFiled: March 28, 2017Date of Patent: July 16, 2019Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Masaaki Kabe, Akira Sakaigawa
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Publication number: 20190204632Abstract: A display device includes a light modulation layer and a light source. The light modulation layer is disposed between a pair of transparent substrates, has determined refractive index anisotropy, and includes plural light modulation elements which differ in responsiveness to an electric field generated by electrodes formed on a transparent substrate. The light source emits light of a determined color incident on the light modulation layer from a side of the light modulation layer. When the electric field is not generated, the light modulation layer transmits the incident light emitted from the light source. When the electric field is generated, the light modulation layer scatters the incident light and emits scattered light to a transparent substrate.Type: ApplicationFiled: March 8, 2019Publication date: July 4, 2019Inventors: Kentaro OKUYAMA, Akira SAKAIGAWA
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Patent number: 10341538Abstract: A display system includes a controller and an image display panel. The controller includes a signal transmitter configured to output at least a vertical synchronization signal to a plurality of image-capturing apparatuses; and a synthesizer configured to provide synthesized image signals in units of lines obtained by synthesizing, in units of lines, image signals in units of lines output from the respective image-capturing apparatuses at a timing corresponding to a horizontal synchronization signal formed in a predetermined cycle based on an output timing of the vertical synchronization signal. The image display panel is configured to display sequentially, in units of lines, the synthesized image signals in units of lines.Type: GrantFiled: November 28, 2017Date of Patent: July 2, 2019Assignee: Japan Display Inc.Inventors: Tsutomu Harada, Kazunori Yamaguchi, Akira Sakaigawa, Fumitaka Gotoh
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Patent number: 10317731Abstract: A display device includes a light modulation layer having predetermined refractive index anisotropy and including plural light modulation areas which differ in responsiveness to an electric field generated by electrodes, a polarization layer which is disposed on the front side of the light modulation layer, on which side external light enters, which shuts out light other than light having a predetermined polarization direction, a reflection layer disposed on the back side of the light modulation layer, and a phase retardation layer which is disposed between the polarization and light modulation layers, which creates a predetermined phase difference between incident light entering through the polarization layer and reflected light from the reflection layer, and which polarizes the reflected light in a direction different from the predetermined polarization direction. The light modulation layer transmits the reflected light when no electric field is generated and scatters it otherwise.Type: GrantFiled: October 23, 2015Date of Patent: June 11, 2019Assignee: Japan Display Inc.Inventors: Akira Sakaigawa, Kentaro Okuyama
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Publication number: 20190171071Abstract: According to one embodiment, a display device includes a display panel, a light source, a light guide and a prism sheet. The display panel includes a display area in which unit pixels each containing first sub-pixels and second sub-pixels are arranged along a first direction and a second direction. In the display area, the first sub-pixels have a width different from that of the second sub-pixel in at least one of the first direction and the second direction, or each unit pixel contains different numbers of first sub-pixels and second sub-pixels. The prism sheet is interposed between the light guide and the display panel and includes prisms extending along a third direction inclined with respect to the second direction by an acute angle of inclination.Type: ApplicationFiled: February 5, 2019Publication date: June 6, 2019Applicant: Japan Display Inc.Inventors: Tae KUROKAWA, Akira Sakaigawa, Masaaki Kabe, Kojiro Ikeda, Amane Higashi
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Patent number: 10313636Abstract: The display system includes a display system including an image-capturing apparatus including an image-capturing element; an image processing apparatus that performs image processing on the image; and a display apparatus including a display device that displays the image resulting from the image processing. The image processing apparatus includes an image processor that performs the image processing on a predetermined number of line images corresponding to a part of a frame image captured by the image-capturing element, sequentially outputs the image to the display apparatus per the predetermined number of line images, and causes the display apparatus to display the frame image; and a storage device that stores the predetermined number of line images until the frame image is completed. The image processor is configured to perform the image processing including frame unit processing on the predetermined number of line images associated with the frame image to be output.Type: GrantFiled: July 19, 2018Date of Patent: June 4, 2019Assignee: Japan Display Inc.Inventors: Yutaka Ozawa, Akira Sakaigawa, Keiji Fukuhara
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Patent number: 10269313Abstract: In a display device, pixels each including first to fourth subpixels that respectively display first to third primary colors and fourth color are arranged on an image display panel. A lighting unit emits light to the panel from the rear thereof. A control unit calculates a required luminance value for each block of the display surface of the panel based on an input image signal, determines a light source lighting amount of the lighting unit based on luminance distribution information on the lighting unit so as to satisfy the required luminance value, generates luminance information on each pixel based on the luminance distribution information and light source lighting amount, generates an output image signal that drives the subpixels based on the luminance information and input image signal, controls the lighting unit by the light source lighting amount, and controls the panel by the output image signal.Type: GrantFiled: April 20, 2017Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventors: Tsutomu Harada, Naoyuki Takasaki, Akira Sakaigawa, Amane Higashi
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Patent number: 10268089Abstract: According to one embodiment, a display device includes a display panel, a light source, a light guide and a prism sheet. The display panel includes a display area in which unit pixels each containing first sub-pixels and second sub-pixels are arranged along a first direction and a second direction. In the display area, the first sub-pixels have a width different from that of the second sub-pixel in at least one of the first direction and the second direction, or each unit pixel contains different numbers of first sub-pixels and second sub-pixels. The prism sheet is interposed between the light guide and the display panel and includes prisms extending along a third direction inclined with respect to the second direction by an acute angle of inclination.Type: GrantFiled: May 20, 2015Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventors: Tae Kurokawa, Akira Sakaigawa, Masaaki Kabe, Kojiro Ikeda, Amane Higashi
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Patent number: 10268062Abstract: A display device includes a light modulation layer and a light source. The light modulation layer is disposed between a pair of transparent substrates, has determined refractive index anisotropy, and includes plural light modulation elements which differ in responsiveness to an electric field generated by electrodes formed on a transparent substrate. The light source emits light of a determined color incident on the light modulation layer from a side of the light modulation layer. When the electric field is not generated, the light modulation layer transmits the incident light emitted from the light source. When the electric field is generated, the light modulation layer scatters the incident light and emits scattered light to a transparent substrate.Type: GrantFiled: October 15, 2015Date of Patent: April 23, 2019Assignee: Japan Display Inc.Inventors: Kentaro Okuyama, Akira Sakaigawa
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Publication number: 20190051257Abstract: A method of driving 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 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: ApplicationFiled: October 15, 2018Publication date: February 14, 2019Applicant: Japan Display Inc.Inventors: Masaaki Kabe, Amane Higashi, Yasuo Takahashi, Akira Sakaigawa
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Patent number: 10185070Abstract: According to one embodiment, a light source device includes a light source element including a first light emitting element which emits light of a first wavelength and a second light emitting element which emits light of a second wavelength, a first wavelength conversion material which is excited by the light from the first light emitting element to emit light of a third wavelength, and a second wavelength conversion material which is excited by the light from the second light emitting element to emit light of a fourth wavelength, wherein cyan light produced by the light emission of the first light emitting element and magenta light produced by the light emission of the second light emitting element are emitted from the same light emitting surface.Type: GrantFiled: October 3, 2016Date of Patent: January 22, 2019Assignee: Japan Display Inc.Inventors: Susumu Kimura, Tsutomu Harada, Akira Sakaigawa
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Patent number: 10163410Abstract: 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: GrantFiled: March 2, 2017Date of Patent: December 25, 2018Assignee: JAPAN DISPLAY INC.Inventors: Masaaki Kabe, Amane Higashi, Yasuo Takahashi, Akira Sakaigawa
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Patent number: 10162088Abstract: 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: GrantFiled: July 18, 2017Date of Patent: December 25, 2018Assignee: JAPAN DISPLAY INC.Inventors: Yasuyuki Matsui, Masaaki Kabe, Akira Sakaigawa, Koji Noguchi, Kenta Seki
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Patent number: 10147767Abstract: 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: GrantFiled: June 19, 2017Date of Patent: December 4, 2018Assignee: Japan Display Inc.Inventors: Masaaki Kabe, Hidemasa Yamaguchi, Kojiro Ikeda, Akira Sakaigawa
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Publication number: 20180324391Abstract: The display system includes a display system including an image-capturing apparatus including an image-capturing element; an image processing apparatus that performs image processing on the image; and a display apparatus including a display device that displays the image resulting from the image processing. The image processing apparatus includes an image processor that performs the image processing on a predetermined number of line images corresponding to a part of a frame image captured by the image-capturing element, sequentially outputs the image to the display apparatus per the predetermined number of line images, and causes the display apparatus to display the frame image; and a storage device that stores the predetermined number of line images until the frame image is completed. The image processor is configured to perform the image processing including frame unit processing on the predetermined number of line images associated with the frame image to be output.Type: ApplicationFiled: July 19, 2018Publication date: November 8, 2018Inventors: Yutaka OZAWA, Akira SAKAIGAWA, Keiji FUKUHARA
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Patent number: 10068541Abstract: According to an aspect, a display device comprising a display unit that produces a display output corresponding to an input signal. The display unit combines the display output corresponding to each of four or more colors. The display unit includes a plurality of pixels each including three or more sub-pixels, the number of which is smaller than the number of colors. The pixel includes, as the sub-pixels, one first sub-pixel having largest display region among the sub-pixels and two or more second sub-pixels each having a display region smaller than that of the first sub-pixel. One of the second sub-pixels outputs a high luminance color having highest luminance among the four or more colors.Type: GrantFiled: February 29, 2016Date of Patent: September 4, 2018Assignee: Japan Display Inc.Inventor: Akira Sakaigawa
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Patent number: 10051245Abstract: The display system includes a display system including an image-capturing apparatus including an image-capturing element; an image processing apparatus that performs image processing on the image; and a display apparatus including a display device that displays the image resulting from the image processing. The image processing apparatus includes an image processor that performs the image processing on a predetermined number of line images corresponding to a part of a frame image captured by the image-capturing element, sequentially outputs the image to the display apparatus per the predetermined number of line images, and causes the display apparatus to display the frame image; and a storage device that stores the predetermined number of line images until the frame image is completed. The image processor is configured to perform the image processing including frame unit processing on the predetermined number of line images associated with the frame image to be output.Type: GrantFiled: June 5, 2017Date of Patent: August 14, 2018Assignee: Japan Display Inc.Inventors: Yutaka Ozawa, Akira Sakaigawa, Keiji Fukuhara
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Publication number: 20180211574Abstract: 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: ApplicationFiled: March 19, 2018Publication date: July 26, 2018Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki