Patents by Inventor Takeo Koito
Takeo Koito 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: 11719984Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell and a polarized light conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of an pair of substrates of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, a plurality of first electrodes arranged along one direction on the insulating substrate and formed in a strip shape, a first inorganic insulating film covering the first electrodes and a plurality of second electrodes intersecting the first electrodes on the first inorganic insulating film and formed in a strip shape.Type: GrantFiled: July 22, 2022Date of Patent: August 8, 2023Assignee: JAPAN DISPLAY INC.Inventors: Takeo Koito, Tae Kurokawa, Masashi Mitsui
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Publication number: 20230244109Abstract: According to an aspect, an optical element includes: a first substrate including a first electrode; a second substrate stacked on the first substrate and including a second electrode; a liquid crystal layer provided between the first substrate and the second substrate; a sealing member extending along an outer periphery of the liquid crystal layer; a first spacer provided on an inner side of the sealing member; and a conductive column provided on an outer side of the sealing member and electrically connecting the first electrode and the second electrode. The conductive column and the first spacer include the same material.Type: ApplicationFiled: April 7, 2023Publication date: August 3, 2023Inventors: Takeo KOITO, Kojiro IKEDA, Tae KUROKAWA
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Publication number: 20230244120Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.Type: ApplicationFiled: April 12, 2023Publication date: August 3, 2023Applicant: Japan Display Inc.Inventors: Tae KUROKAWA, Takeo KOITO, Masashi MITSUI
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Patent number: 11709566Abstract: A touch panel is disclosed herein. In an embodiment, the touch panel includes a substrate with first and second surfaces, a drive electrode facing the first surface, a plurality of touch detection electrodes facing the second surface, and a dummy electrode between adjacent touch detection electrodes. Each touch detection electrode includes a first conductive thin wire extending parallel to the first and second surfaces. The dummy electrode includes a second conductive thin wire extending along the first conductive thin wire. The first conductive thin wire includes a first bent portion and a second bent portion alternately arranged with the first conductive thin wire having a zigzag pattern. The second conductive thin wire includes a third bent portion and a slit that are alternately arranged. The third bent portion is arranged on a virtual straight line formed by virtually connecting the first bent portions of one first conductive thin wire.Type: GrantFiled: January 31, 2022Date of Patent: July 25, 2023Assignee: Japan Display Inc.Inventors: Koji Ishizaki, Hayato Kurasawa, Takeo Koito
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Publication number: 20230168542Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: ApplicationFiled: January 27, 2023Publication date: June 1, 2023Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
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Patent number: 11656527Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.Type: GrantFiled: August 5, 2022Date of Patent: May 23, 2023Assignee: JAPAN DISPLAY INC.Inventors: Tae Kurokawa, Takeo Koito, Masashi Mitsui
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Patent number: 11655944Abstract: The purpose of the present invention is to realize a lighting device of small light distribution angle and less leakage light and further to realize a lighting device in which the light beam is easy to control. The following is an example of the structure to meet the above purpose. A lighting device including: a light guide; LEDs set at a side surface of the light guide; a prism sheet set on a major surface of the light guide, in which a first louver which extends in a first direction and, a second louver which extends in an orthogonal direction to the first direction are superposed on the prism sheet.Type: GrantFiled: January 6, 2022Date of Patent: May 23, 2023Assignee: JAPAN DISPLAY INC.Inventors: Makoto Hasegawa, Takeo Koito, Nobuyuki Suzuki, Masafumi Okada
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Patent number: 11650464Abstract: According to an aspect, an optical element includes: a first substrate including a first electrode; a second substrate stacked on the first substrate and including a second electrode; a liquid crystal layer provided between the first substrate and the second substrate; a sealing member extending along an outer periphery of the liquid crystal layer; a first spacer provided on an inner side of the sealing member; and a conductive column provided on an outer side of the sealing member and electrically connecting the first electrode and the second electrode. The conductive column and the first spacer include the same material.Type: GrantFiled: March 29, 2022Date of Patent: May 16, 2023Assignee: Japan Display Inc.Inventors: Takeo Koito, Kojiro Ikeda, Tae Kurokawa
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Patent number: 11650444Abstract: According to one embodiment, a display device and an electronic apparatus each include a liquid crystal layer, a first insulating substrate, a pixel electrode, a first transparent electrode disposed between the first insulating substrate and the liquid crystal layer, a second insulating substrate, a first organic insulating film overlapping the pixel electrode, a second organic insulating film disposed between the first organic insulating film and the liquid crystal layer, and a second transparent electrode overlapping the first transparent electrode and disposed between the second insulating substrate and the liquid crystal layer. The first organic insulating film includes a concave portion, and the second transparent electrode is disposed in the concave portion.Type: GrantFiled: July 21, 2021Date of Patent: May 16, 2023Assignee: Japan Display Inc.Inventor: Takeo Koito
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Publication number: 20230147664Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell bonded to the first liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first substrate including first electrodes formed in a strip shape, a second substrate including second electrodes formed in a strip shape, and a liquid crystal layer held between the first substrate and the second substrate. An angle of intersection of the first electrodes and the second electrodes is less than 90° in each of the first liquid crystal cell and the second liquid crystal cell.Type: ApplicationFiled: January 12, 2023Publication date: May 11, 2023Applicant: Japan Display Inc.Inventors: Shinichiro TANAKA, Takeo KOITO, Kojiro IKEDA, Koichi NAGAO
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Publication number: 20230131661Abstract: According to an aspect, a display device includes: a plurality of pixels arranged in a first direction; a light source configured to emit light to the pixels; a light-blocking member disposed between the pixels and the light source and provided with slits extending in a direction intersecting the first direction; a first reflector that faces the light-blocking member with the light source in between and reflects light to the light-blocking member; a second reflector that covers at least part of the light source side of the light-blocking member and reflects light to the light source; and a reflective polarizer that is disposed between the first reflector and the pixels, transmits light polarized in a second direction, and reflects light polarized in a direction intersecting the second direction.Type: ApplicationFiled: October 19, 2022Publication date: April 27, 2023Inventor: Takeo KOITO
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Publication number: 20230130451Abstract: According to an aspect, a display device includes: a display panel including a plurality of pixels disposed in a matrix having a row-column configuration; and a light control panel configured to control light traveling from the display panel to a plurality of viewpoints such that the light varies from viewpoint to viewpoint. The pixels include a first pixel configured to output light in a first color and a second pixel configured to output light in a second color. The first and second pixels are arranged in a column direction orthogonal to an arrangement direction of the viewpoints. A width of each pixel in a row direction along the arrangement direction of the viewpoints is greater than a width of the pixel in the column direction.Type: ApplicationFiled: October 21, 2022Publication date: April 27, 2023Inventor: Takeo KOITO
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Patent number: 11630338Abstract: According to one embodiment, a display device includes a display panel, a third transparent substrate, a light-emitting element, and a modulation element. The display panel includes a first transparent substrate, a second transparent substrate, a first liquid crystal layer of a polymer dispersed type held. The third transparent substrate has a first end portion. The light-emitting element is opposed to the first end portion. The modulation element includes a fourth transparent substrate and a fifth transparent substrate disposed between the light-emitting element and the first end portion, a second liquid crystal layer, and control electrodes for applying voltage to the second liquid crystal layer.Type: GrantFiled: June 1, 2021Date of Patent: April 18, 2023Assignee: Japan Display Inc.Inventors: Takayuki Imai, Takeo Koito
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Patent number: 11604378Abstract: A display device includes a light source, a liquid crystal panel including a first sub-pixel and a second sub-pixel adjacent to the first sub-pixel in a first direction, and an optical control element including a light shielding layer. Each of the first sub-pixel and the second sub-pixel has a first width in the first direction. The light shielding layer includes an opening portion having a second width in the first direction. The second width is 1.5 times the first width. In all of light rays irradiated from the light source and transmitting through the opening portion, an angle between a first light ray transmitting through the first sub-pixel and emitted to an outside and the second light ray transmitting through the second sub-pixel and emitted to the outside is less than or equal to 2 degrees.Type: GrantFiled: March 30, 2022Date of Patent: March 14, 2023Assignee: Japan Display Inc.Inventors: Go Miyazaki, Shuji Hayashi, Takeo Koito
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Patent number: 11586078Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell bonded to the first liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first substrate including first electrodes formed in a strip shape, a second substrate including second electrodes formed in a strip shape, and a liquid crystal layer held between the first substrate and the second substrate. An angle of intersection of the first electrodes and the second electrodes is less than 90° in each of the first liquid crystal cell and the second liquid crystal cell.Type: GrantFiled: October 20, 2021Date of Patent: February 21, 2023Assignee: Japan Display Inc.Inventors: Shinichiro Tanaka, Takeo Koito, Kojiro Ikeda, Koichi Nagao
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Publication number: 20230052905Abstract: According to an aspect, a view-angle control device includes: a drive layer in which light-transmitting regions and switchable regions are alternately arranged in one direction, each light-transmitting region being configured to transmit light, each switchable region being switchable between a light-transmitting state and a light-blocking state through switching of liquid crystal orientation; and a plurality of optical member layers stacked together with the drive layer. Each optical member layer includes a base member that transmits light and a light-blocking part that is provided at a position overlapping with the switchable region and blocks light. The light-blocking part is disposed on a surface of the base member on a farther side from the drive layer.Type: ApplicationFiled: August 11, 2022Publication date: February 16, 2023Inventor: Takeo KOITO
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Patent number: 11579499Abstract: According to one embodiment, an electronic apparatus includes a first liquid crystal panel, a second liquid crystal panel, a camera overlapping the first liquid crystal panel and the second liquid crystal panel and receiving light via the first liquid crystal panel and the second liquid crystal panel. The first liquid crystal panel includes a first liquid crystal layer, a first pixel electrode not overlapping the camera, and a second pixel electrode overlapping the camera. The second liquid crystal panel includes first transparent electrodes overlapping the camera, a second transparent electrode overlapping the first transparent electrodes, and a second liquid crystal layer disposed between the first transparent electrodes and the second transparent electrode.Type: GrantFiled: April 12, 2022Date of Patent: February 14, 2023Assignee: Japan Display Inc.Inventor: Takeo Koito
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Patent number: 11567369Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: GrantFiled: June 4, 2021Date of Patent: January 31, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Publication number: 20220377305Abstract: According to one embodiment, an image processing device includes an acquisition unit which obtains a target image, a generation unit which generates a three-dimensional image by reordering a plurality of video signals corresponding to the obtained target image such that each of the video signals is written to one of a plurality of pixels arranged in a horizontal direction while skipping a predetermined number of pixels, and an output unit which outputs the generated three-dimensional image to a display device.Type: ApplicationFiled: July 28, 2022Publication date: November 24, 2022Applicant: Japan Display Inc.Inventors: Daisuke OZEKI, Takeo KOITO, Chikyu NAKAOKA
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Publication number: 20220373856Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.Type: ApplicationFiled: August 5, 2022Publication date: November 24, 2022Applicant: Japan Display Inc.Inventors: Tae KUROKAWA, Takeo KOITO, Masashi MITSUI