Patents by Inventor Mitsutaka Okita
Mitsutaka Okita 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: 20180252974Abstract: A display device includes: a plurality of video lines and a plurality of scanning lines provided over an insulating base material; a light shielding film overlapping with the plurality of video lines and the plurality of scanning lines; a pixel electrode and a common electrode provided in a sub-pixel region surrounded by the plurality of video lines and the plurality of scanning lines in plan view; a liquid crystal layer driven by an electric field generated between the pixel electrode and the common electrode; and a first insulating layer provided between the pixel electrode and the common electrode. The common electrode is provided between the first insulating layer and the liquid crystal layer, and has an opening overlapping with the plurality of video lines and the plurality of scanning lines and overlapping with the pixel electrode. In a light transmission region surrounded by the light shielding film, a shape of the pixel electrode is a linear shape without a branching portion.Type: ApplicationFiled: February 28, 2018Publication date: September 6, 2018Applicant: Japan Display Inc.Inventor: Mitsutaka OKITA
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Patent number: 10068928Abstract: A display device includes: a scan line extending in a first direction; first, second and third signal lines extending in a second direction; a first sub-pixel connected to the scan line and the first signal line; a second sub-pixel connected to the scan line and the second signal line; and a third sub-pixel connected to the scan line and the third signal line. The second signal line disposed between the first sub-pixel and the third sub-pixel is formed by a different layer so as to overlap with the third signal line as viewed in a plan view.Type: GrantFiled: December 2, 2015Date of Patent: September 4, 2018Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Publication number: 20180217422Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.Type: ApplicationFiled: January 22, 2018Publication date: August 2, 2018Applicant: Japan Display Inc.Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
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Publication number: 20180217423Abstract: According to one embodiment, the organic insulating film and the alignment film are provided on the first substrate. The alignment film is located between the liquid crystal layer and the organic insulating film and contacts the liquid crystal layer. The organic insulating film has a restricting portion on an inner side from the sealant and on an outer side from the display area. The restricting portion includes a recess and a projection extending in predetermined directions. The alignment film is formed on the restricting portion.Type: ApplicationFiled: January 30, 2018Publication date: August 2, 2018Applicant: Japan Display Inc.Inventors: Daiichi SUZUKI, Hirofumi WAKEMOTO, Mitsutaka OKITA, Tetsuya KOJIMA
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Publication number: 20180210257Abstract: If a divided area of common electrode layers is positioned on a source line, a leakage electric field on the source line has an effect on a liquid crystal layer through the divided area of the common electrode layers. A display device includes an array substrate and a counter substrate. The array substrate includes scanning signal wiring layers, video signal wiring layers, pixel electrode layers arranged in a layer higher than the video signal wiring layers, and common electrode layers arranged in a layer higher than the pixel electrode layers. The common electrode layers are arranged in positions covering the video signal wiring layers in a plan view. The common electrode layers are divided in the extending direction of the video signal line.Type: ApplicationFiled: March 26, 2018Publication date: July 26, 2018Inventor: Mitsutaka OKITA
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Patent number: 9958720Abstract: If a divided area of common electrode layers is positioned on a source line, a leakage electric field on the source line has an effect on a liquid crystal layer through the divided area of the common electrode layers. A display device includes an array substrate and a counter substrate. The array substrate includes scanning signal wiring layers, video signal wiring layers, pixel electrode layers arranged in a layer higher than the video signal wiring layers, and common electrode layers arranged in a layer higher than the pixel electrode layers. The common electrode layers are arranged in positions covering the video signal wiring layers in a plan view. The common electrode layers are divided in the extending direction of the video signal line.Type: GrantFiled: April 16, 2015Date of Patent: May 1, 2018Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Patent number: 9946130Abstract: A display device includes: first and second drain electrodes; an organic insulating film; an inorganic insulating film formed on the organic insulating film; and first and second pixel electrodes formed on the inorganic insulating film. The organic insulating film includes an organic insulating film opening spanning the first drain electrode and the second drain electrode. The inorganic insulating film covering the organic insulating film includes first and second inorganic insulating film openings. The first pixel electrode is connected to the first drain electrode via the first inorganic insulating film opening. The second pixel electrode is connected to the second drain electrode via the second inorganic insulating film opening.Type: GrantFiled: November 18, 2015Date of Patent: April 17, 2018Assignee: Japan Display Inc.Inventors: Mitsutaka Okita, Noriyoshi Kanda, Toshiyuki Higano
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Publication number: 20180095593Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Patent number: 9904122Abstract: According to one embodiment, a display device, includes a first main pixel including a first sub-pixel, a second sub-pixel which is arranged in a first direction of the first sub-pixel, and a third sub-pixel which is arranged in a second direction of the first sub-pixel and the first direction of the second sub-pixel, and a second main pixel including a fourth sub-pixel which is arranged in the second direction of the third sub-pixel, a fifth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the second sub-pixel, and a sixth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the fifth sub-pixel.Type: GrantFiled: April 4, 2016Date of Patent: February 27, 2018Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Patent number: 9870092Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: GrantFiled: December 21, 2016Date of Patent: January 16, 2018Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Patent number: 9857638Abstract: A display device includes a scanning line extending in a first direction and a scanning line extending in a second direction. The signal line extends in a zigzag manner in the second direction by running tilted at a first predetermined angle with respect to the second direction for every plurality of pixels and running tilted at a second predetermined angle with respect to the second direction for every plurality of pixels.Type: GrantFiled: December 31, 2015Date of Patent: January 2, 2018Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama
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Patent number: 9778504Abstract: According to one embodiment, a liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first color filter and a second color filter. The first substrate includes an organic insulating film, a first pixel electrode and a second pixel electrode. The organic insulating film includes a first projection portion located opposite to the boundary between the first color filter and the second color filter, extending along the boundary, and projecting toward the second substrate.Type: GrantFiled: December 2, 2015Date of Patent: October 3, 2017Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Patent number: 9684198Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, an opposed substrate and a liquid crystal layer. The array substrate includes a first line, a second line, a light shielding pattern, a first pixel electrode, and a second pixel electrode. The opposed substrate includes a light shielding layer, a first colored layer, and a second colored layer.Type: GrantFiled: December 23, 2013Date of Patent: June 20, 2017Assignee: Japan Display Inc.Inventors: Mitsutaka Okita, Kazuhiro Nishiyama
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Publication number: 20170115525Abstract: There is provided a liquid crystal display device that reduces viewing angle color mixture on a high definition screen. In the liquid crystal display device, a pixel electrode is formed on a region surrounded by scanning lines and picture signal lines. The scanning line is insulated from the picture signal line by a first insulating film. An organic insulating film is formed to cover the picture signal line. The organic insulating film is not formed below the pixel electrode. A common electrode is formed to cover the organic insulating film and the first insulating film. A second insulating film is formed to cover the common electrode. The pixel electrode is formed on the second insulating film. On the organic insulating film, a metal light shielding film is formed as extending in a second direction. The metal light shielding film is in contact with the common electrode.Type: ApplicationFiled: October 13, 2016Publication date: April 27, 2017Inventor: Mitsutaka OKITA
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Patent number: 9632621Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: GrantFiled: May 12, 2016Date of Patent: April 25, 2017Assignee: Japan Display Inc.Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
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Publication number: 20170102600Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: ApplicationFiled: December 21, 2016Publication date: April 13, 2017Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Kazuhiro NISHIYAMA, Yoshitoshi KIDA, Koji ISHIZAKI, Kohei AZUMI, Hiroshi MIZUHASHI
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Patent number: 9482895Abstract: According to one embodiment, a liquid crystal display device includes array substrate, counter substrate and liquid crystal layer. The array substrate includes a plurality of pixel electrodes, a plurality of gate lines, a plurality of source lines, a plurality of switching elements, a gate driver, and a source driver. The counter substrate includes a color filter. In each frame period, gradation signals of given polarity are applied to a plurality of pixel electrodes facing the transparent filter, while gradation signals of the reverse polarity are applied to a plurality of pixel electrodes facing the green filter.Type: GrantFiled: June 6, 2014Date of Patent: November 1, 2016Assignee: Japan Display Inc.Inventors: Mitsutaka Okita, Kazuhiro Nishiyama
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Publication number: 20160306237Abstract: According to one embodiment, a display device, includes a first main pixel including a first sub-pixel, a second sub-pixel which is arranged in a first direction of the first sub-pixel, and a third sub-pixel which is arranged in a second direction of the first sub-pixel and the first direction of the second sub-pixel, and a second main pixel including a fourth sub-pixel which is arranged in the second direction of the third sub-pixel, a fifth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the second sub-pixel, and a sixth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the fifth sub-pixel.Type: ApplicationFiled: April 4, 2016Publication date: October 20, 2016Applicant: Japan Display Inc.Inventor: Mitsutaka OKITA
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Patent number: 9459508Abstract: According to one embodiment, a display device includes a first signal line, a second signal line, a first switching element, a second switching element, an insulating film, a first contact hole, a second contact hole, a first pixel electrode and a second pixel electrode. The first contact hole is formed in the insulating film, and located between the first signal line and the second signal line. The second contact hole is formed in the insulating film, located opposite to the first contact hole with respect to the second signal line, and also located side by side with the first contact hole in the first direction.Type: GrantFiled: December 10, 2015Date of Patent: October 4, 2016Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Publication number: 20160259476Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.Type: ApplicationFiled: May 12, 2016Publication date: September 8, 2016Inventors: Shigesumi ARAKI, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi