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).
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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: 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: 20180315385Abstract: According to an aspect, a display device includes a plurality of pixels. Each pixel includes two sub-pixels adjacent to each other in a first direction. Each sub-pixel has one of three colors allocated thereto. Two colors of the two sub-pixels included in the pixel are different. The two colors of the two sub-pixels and a positional relation between the two sub-pixels are the same in each of the pixels arrayed in a second direction. One color not allocated to the two sub-pixels included in a first pixel out of the three colors is allocated to at least one of the sub-pixels included in second pixels adjacent to the first pixel in the first direction. The sub-pixels having the same color allocated thereto are arranged along the first direction with one sub-pixel interposed therebetween, the one sub-pixel having another color allocated thereto.Type: ApplicationFiled: April 25, 2018Publication date: November 1, 2018Inventors: Kojiro IKEDA, Masaaki KABE, Chikyu NAKAOKA
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Publication number: 20180315384Abstract: According to an aspect, a display device includes an image display panel including: sub-pixel rows, in each of which sub-pixels for displaying different colors are periodically arrayed in a first direction, are regularly arranged in a second direction different from the first direction; signal lines in parallel to sub-pixel columns in which the sub-pixels are successively arranged in the second direction; and scan lines that sequentially select each sub-pixel row. Each of m (integer?2) selector signals selects n (integer 1) pairs of the signal lines each supplied with two signals each having a mutually reverse polarity, within a period during which each sub-pixel row is selected by a corresponding scan line, and a sum of potential changes of the n pairs of the signal lines selected by each selector signal is substantially zero when each sub-pixel row is sequentially selected by the corresponding scan line.Type: ApplicationFiled: April 19, 2018Publication date: November 1, 2018Inventors: Kojiro IKEDA, Masaaki KABE, Jin OTA
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Publication number: 20180252964Abstract: According to one embodiment, a display device includes a first arrangement layer and a second arrangement layer. The first layer includes a first pixel, a second pixel, and a third pixel are arranged periodically in one direction. The second layer is opposed to the first layer, and the second layer includes a first element, a second element, and a third element which are arranged periodically to correspond to the first pixel, the second pixel, and the third pixel, respectively, and separate emission light to light of wavelength corresponding to a first color, light of wavelength corresponding to a second color, and light of wavelength corresponding to a third color to be emitted on the first pixel, the second pixel, and the third pixel, respectively.Type: ApplicationFiled: March 5, 2018Publication date: September 6, 2018Inventors: Chikyu Nakaoka, Masaaki Kabe, Tatsuya Yata, Kojiro Ikeda
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Patent number: 10048548Abstract: 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: GrantFiled: November 30, 2015Date of Patent: August 14, 2018Assignee: Japan Display Inc.Inventors: Koichi Nagasawa, Masaya Tamaki, Shuji Hayashi, Masaaki Kabe, Yoko Fukunaga
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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
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Publication number: 20180203307Abstract: 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: ApplicationFiled: March 13, 2018Publication date: July 19, 2018Inventors: Koichi Nagasawa, Masaya Tamaki, Shuji Hayashi, Masaaki Kabe, Yoko Fukunaga
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Patent number: 10019961Abstract: A display device includes an image display panel and a control device. The image display panel includes first sub-pixels, second sub-pixels, third sub-pixels, and fourth sub-pixels in which a specified sub-pixel column including the third sub-pixels and the fourth sub-pixels and at least one other sub-pixel column arranged next to the specified sub-pixel column are periodically arranged. The control device performs column inversion driving to apply a voltage having the same polarity to signal lines of a first specified sub-pixel column belonging to the specified sub-pixel columns and the other sub-pixel column adjacent to the first specified sub-pixel column, apply a voltage having the same polarity as the first specified sub-pixel column to one of the signal lines of a second specified sub-pixel column and a third specified sub-pixel column adjacent to the first specified sub-pixel column, and invert the polarities of the voltages to be applied at predetermined cycles.Type: GrantFiled: May 19, 2015Date of Patent: July 10, 2018Assignee: Japan Display Inc.Inventors: Masaaki Kabe, Hiroki Uchiyama, Toshiaki Fukushima, Gen Koide
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Patent number: 10008136Abstract: 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: September 18, 2017Date of Patent: June 26, 2018Assignee: Japan Dispaly Inc.Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
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Patent number: 9995983Abstract: 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: GrantFiled: November 30, 2016Date of Patent: June 12, 2018Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Masaaki Kabe, Shinichiro Oka, Akira Sakaigawa
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Patent number: 9978321Abstract: According to one embodiment, a display device includes signal lines, scanning lines, a first pixel, a second pixel and a third pixel. The first pixel including a first subpixel which displays a first color, a second subpixel which displays white, and a third subpixel which displays a second color. The second pixel including a fourth subpixel which displays a third color, a fifth subpixel which displays white, and a sixth subpixel which displays the first color. The third pixel including a seventh subpixel which displays the second color, an eighth subpixel which displays white, and a ninth subpixel which displays the third color.Type: GrantFiled: July 28, 2016Date of Patent: May 22, 2018Assignee: Japan Display Inc.Inventors: Takeyuki Tsuruma, Akira Sakaigawa, Masaaki Kabe, Kojiro Ikeda
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Patent number: 9978339Abstract: 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: GrantFiled: July 12, 2017Date of Patent: May 22, 2018Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Toshiyuki Nagatsuma, Masaaki Kabe, Amane Higashi, Tae Kurokawa, Fumitaka Gotoh, Akira Sakaigawa
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Patent number: 9972253Abstract: Provided are a display apparatus and an illumination apparatus including: a light source; a time division control unit that performs a time division operation on a value represented by a first luminance control signal of a first bit number for controlling luminance of the light source to generate second luminance control signals each having a second bit number that is smaller than the first bit number and generates third luminance control signals each having a pulse width that corresponds to one of the values represented by the second luminance control signals; and a drive unit that generates drive signals for causing the light source to emit light on the basis of the third luminance control signals and supplies the drive signals to the light source.Type: GrantFiled: April 9, 2015Date of Patent: May 15, 2018Assignee: Japan Display Inc.Inventors: Fumitaka Gotoh, Tsutomu Harada, Toshiyuki Nagatsuma, Akira Sakaigawa, Masaaki Kabe, Tae Kurokawa, Kojiro Ikeda
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Patent number: 9972255Abstract: According to an aspect, a display device includes: an image display panel in which pixels are arranged in a two-dimensional matrix, each of the pixels including a first sub-pixel displaying a first color, a second sub-pixel displaying a second color, a third sub-pixel displaying a third color, and a fourth sub-pixel displaying a fourth color; and a signal processing unit that converts input values of input signals into extended values in an extended color space to generate output signals, and outputs the generated output signals to the image display panel. The signal processing unit changes the output signals for the first to fourth sub-pixels based on at least saturation of the input signals.Type: GrantFiled: May 28, 2015Date of Patent: May 15, 2018Assignee: Japan Display Inc.Inventors: Masaaki Kabe, Toshiyuki Nagatsuma, Amane Higashi, Yoko Fukunaga
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Publication number: 20180129092Abstract: According to one embodiment, a liquid crystal device includes a first substrate including a first electrode and a second electrode, a second substrate, a liquid crystal layer, and the second electrode is located on a side of the liquid crystal layer with respect to the first electrode and includes a first opening, the first opening is formed into a polygonal shape including a base portion and at least one projecting portion projecting from the base portion along a first direction, a width of the base portion along the first direction is greater than a width of the projecting portion along the first direction, and the liquid crystal layer exhibits transparency while no voltage being applied and scattering property while voltage being applied.Type: ApplicationFiled: October 31, 2017Publication date: May 10, 2018Inventors: Kojiro Ikeda, Masaaki Kabe, Shinichiro Oka, Chikyu Nakaoka
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Publication number: 20180122332Abstract: According to one embodiment, a display device, includes a first main pixel, wherein the first main pixel comprises a first sub-pixel displaying a first color, a second sub-pixel displaying a second color different from the first color, and a third sub-pixel displaying a third color different from the first and second colors, the first and second sub-pixels are arranged in a second direction, the first and third sub-pixels are arranged in a first direction, and the second and third sub-pixels are arranged in the first direction, and each of the first and second sub-pixels has a first length in the first direction, and the third sub-pixel has a second length smaller than the first length in the first direction.Type: ApplicationFiled: October 9, 2017Publication date: May 3, 2018Inventors: Kojiro IKEDA, Masaaki KABE, Chikyu NAKAOKA
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Patent number: 9959790Abstract: 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: September 18, 2017Date of Patent: May 1, 2018Assignee: Japan Dispaly Inc.Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
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Patent number: 9923033Abstract: 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: GrantFiled: June 16, 2017Date of Patent: March 20, 2018Assignee: Japan Display Inc.Inventors: Masaaki Kabe, Kojiro Ikeda, Tsutomu Harada, Akira Sakaigawa
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Publication number: 20180025677Abstract: 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: September 18, 2017Publication date: January 25, 2018Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki