Patents by Inventor Kentaro Okuyama
Kentaro Okuyama 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: 11035995Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.Type: GrantFiled: March 19, 2019Date of Patent: June 15, 2021Assignee: Japan Display Inc.Inventors: Kentaro Okuyama, Yudai Numata
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Patent number: 11022832Abstract: According to one embodiment, a display device includes a first light guide including a first main surface, a second main surface, a first end portion opposed to light-emitting elements, and a second end portion, a first layer which is arranged to be in contact with the first main surface, and a second layer which is arranged to be in contact with the first main surface, and is located between the first layer and the second end portion, wherein the first light guide has a first refractive index, the first layer has a second refractive index lower than the first refractive index, the second layer has a third refractive index higher than the second refractive index, and the first layer is located at a position closer to the first end portion than the second layer.Type: GrantFiled: April 10, 2019Date of Patent: June 1, 2021Assignee: Japan Display Inc.Inventors: Yudai Numata, Kentaro Okuyama
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Publication number: 20210132279Abstract: According to one embodiment, a display device includes a first transparent substrate, a second transparent substrate, a liquid crystal layer, light-emitting elements disposed in a first direction, a third transparent substrate including a main surface and a side surface opposed to the light-emitting elements, and a transparent layer disposed on the main surface and having a lower refractive index than the third transparent substrate. The third transparent substrate is bonded to the first transparent substrate or the second transparent substrate with the transparent layer sandwiched in between. The transparent layer includes strip portions disposed in the first direction and extended along a second direction.Type: ApplicationFiled: January 13, 2021Publication date: May 6, 2021Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Publication number: 20210116759Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.Type: ApplicationFiled: December 8, 2020Publication date: April 22, 2021Inventors: Manabu MIZUNO, Kentaro OKUYAMA, Hiroshi INAMURA, Hiroki SUGIYAMA
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Publication number: 20210103168Abstract: A liquid crystal panel according to one embodiment includes a first substrate, a second substrate opposed to the first substrate, a sealing member bonding the first substrate and the second substrate, and a liquid crystal layer sealed between the first substrate and the second substrate by the sealing member. The sealing member includes a ten-hour half-life temperature of 95° C. or lower and an acrylic resin. The liquid crystal layer includes a macromolecular compound.Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Inventors: Yasushi Iwakabe, Nobuko Fukuoka, Kentaro Okuyama
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Publication number: 20210096405Abstract: According to one embodiment, a display device includes a first display panel, and a polarizer opposed to the first display panel and having a transmission axis for transmitting linearly polarized light. The first display panel includes a first substrate, a second substrate opposed to the first substrate, and a first liquid crystal layer held between the first substrate and the second substrate and including streak-like polymers and liquid crystal molecules. An extension direction of the polymers is substantially orthogonal to the transmission axis.Type: ApplicationFiled: December 14, 2020Publication date: April 1, 2021Applicant: Japan Display IncInventor: Kentaro Okuyama
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Patent number: 10955714Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.Type: GrantFiled: March 19, 2019Date of Patent: March 23, 2021Assignee: Japan Display Inc.Inventors: Kentaro Okuyama, Yudai Numata
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Patent number: 10942396Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.Type: GrantFiled: April 30, 2020Date of Patent: March 9, 2021Assignee: Japan Display Inc.Inventors: Hiroki Sugiyama, Kentaro Okuyama, Hideki Kaneko, Hiroshi Inamura, Manabu Mizuno
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Publication number: 20210055603Abstract: According to one embodiment, a display device includes a first substrate including a light-shielding layer and a conductive line having a first side surface and a second side surface on a side opposite to the first side surface, a second substrate opposed to the first substrate, a polymer dispersed liquid crystal layer held between the first substrate and the second substrate, and including a polymer and liquid crystal molecules, and a light-emitting element opposed to an end portion of at least one of the first substrate and the second substrate, wherein the first side surface is closer to the light-emitting element than the second side surface, and the light-shielding layer covers at least the first side surface of the conductive line.Type: ApplicationFiled: November 9, 2020Publication date: February 25, 2021Applicant: Japan Display Inc.Inventors: Tae KUROKAWA, Kentaro OKUYAMA
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Patent number: 10908446Abstract: According to one embodiment, a display device includes a first display panel, and a polarizer opposed to the first display panel and having a transmission axis for transmitting linearly polarized light. The first display panel includes a first substrate, a second substrate opposed to the first substrate, and a first liquid crystal layer held between the first substrate and the second substrate and including streak-like polymers and liquid crystal molecules. An extension direction of the polymers is substantially orthogonal to the transmission axis.Type: GrantFiled: March 21, 2019Date of Patent: February 2, 2021Assignee: Japan Display Inc.Inventor: Kentaro Okuyama
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Publication number: 20210026171Abstract: According to one embodiment, a display device includes a display panel, a light emitting element, a light guide layer and a first optical layer. The display panel includes a first substrate, a second substrate opposed to the first substrate, and a polymer dispersed liquid crystal layer which is held between the first substrate and the second substrate and contains a polymer and a liquid crystal molecule. The light guide layer has a first surface opposed to the display panel, and an edge opposed to the light emitting element. The first optical layer is located between the display panel and the light guide layer. A refractive index of the first optical layer is lower than a refractive index of the light guide layer.Type: ApplicationFiled: October 15, 2020Publication date: January 28, 2021Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Patent number: 10890804Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.Type: GrantFiled: January 15, 2020Date of Patent: January 12, 2021Assignee: Japan Display Inc.Inventors: Manabu Mizuno, Kentaro Okuyama, Hiroshi Inamura, Hiroki Sugiyama
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Patent number: 10877306Abstract: According to one embodiment, a display device includes a first substrate including a light-shielding layer and a conductive line having a first side surface and a second side surface on a side opposite to the first side surface, a second substrate opposed to the first substrate, a polymer dispersed liquid crystal layer held between the first substrate and the second substrate, and including a polymer and liquid crystal molecules, and a light-emitting element opposed to an end portion of at least one of the first substrate and the second substrate, wherein the first side surface is closer to the light-emitting element than the second side surface, and the light-shielding layer covers at least the first side surface of the conductive line.Type: GrantFiled: September 12, 2018Date of Patent: December 29, 2020Assignee: Japan Display Inc.Inventors: Tae Kurokawa, Kentaro Okuyama
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Patent number: 10845637Abstract: According to one embodiment, a display device includes a display panel, a light emitting element, a light guide layer and a first optical layer. The display panel includes a first substrate, a second substrate opposed to the first substrate, and a polymer dispersed liquid crystal layer which is held between the first substrate and the second substrate and contains a polymer and a liquid crystal molecule. The light guide layer has a first surface opposed to the display panel, and an edge opposed to the light emitting element. The first optical layer is located between the display panel and the light guide layer. A refractive index of the first optical layer is lower than a refractive index of the light guide layer.Type: GrantFiled: August 3, 2018Date of Patent: November 24, 2020Assignee: Japan Display Inc.Inventors: Yudai Numata, Kentaro Okuyama
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Publication number: 20200341332Abstract: According to an aspect, a display device includes: a first light-transmitting substrate; a second light-transmitting substrate disposed so as to face the first light-transmitting substrate; a liquid crystal layer comprising polymer dispersed liquid crystals between the first light-transmitting substrate and the second light-transmitting substrate; and a multilayered film on an outer surface or surfaces of at least one of the first light-transmitting substrate and the second light-transmitting substrate, the multilayered film being configured to reflect light from the first light-transmitting substrate or the second light-transmitting substrate, and absorb light from outside the first light-transmitting substrate or the second light-transmitting substrate.Type: ApplicationFiled: July 8, 2020Publication date: October 29, 2020Inventors: Hiroki SUGIYAMA, Kentaro OKUYAMA, Manabu MIZUNO
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Publication number: 20200310209Abstract: According to one embodiment, a display device including a first substrate a pixel electrode, and lines, a second substrate including a common electrode, a liquid crystal layer located between the first substrate and the second substrate, and a sealing material located in a non-display area, wherein each of the lines includes a first portion extending in a first direction in a display area and a second portion extending in a second direction in the non-display area, the lines include first lines, the second portion of each of the first lines overlapping the sealing material, and the common electrode does not overlap the second portion in an area overlapping the liquid crystal layer.Type: ApplicationFiled: March 25, 2020Publication date: October 1, 2020Applicant: Japan Display Inc.Inventors: Kentaro OKUYAMA, Hiroki SUGIYAMA, Yoshihide OHUE
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Publication number: 20200310173Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.Type: ApplicationFiled: June 17, 2020Publication date: October 1, 2020Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Publication number: 20200310175Abstract: According to one embodiment, a display device including a first substrate having a first end portion, a second substrate facing the first substrate and having a second end portion separated from the first end portion, a liquid crystal layer located between the first substrate and the second substrate, a light-emitting element facing the second end portion, a first sealing member bonding the first substrate and the second substrate together, and a low refractive area located between the first substrate and the second substrate, located between the second end portion and the first sealing member in planar view, and containing a material having a refractive index lower than that of the second substrate.Type: ApplicationFiled: March 25, 2020Publication date: October 1, 2020Applicant: Japan Dispaly Inc.Inventors: Kentaro OKUYAMA, Hiroki Sugiyama, Yoshihide Ohue, Yudai Numata
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Patent number: 10782558Abstract: A display device according to one aspect of the present invention includes a first substrate including at least a pixel electrode and a pixel switching circuit portion, a second substrate arranged to face the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and configured to modulate light, the light being propagated while reflected between the first substrate and the second substrate, and a reflecting layer arranged over a liquid crystal layer side of the pixel switching circuit portion, partially superimposed with the pixel switching circuit portion, and electrically coupled with the pixel electrode, the reflecting layer having higher reflectance of the light than any members included in the pixel switching circuit portion.Type: GrantFiled: September 16, 2019Date of Patent: September 22, 2020Assignee: Japan Display Inc.Inventors: Manabu Mizuno, Kentaro Okuyama, Hiroshi Inamura, Hideki Kaneko, Hiroki Sugiyama
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Publication number: 20200292896Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.Type: ApplicationFiled: March 4, 2020Publication date: September 17, 2020Applicant: Japan Display Inc.Inventors: Kojiro IKEDA, Kentaro OKUYAMA, Tenfu NAKAMURA