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公开(公告)号：US20240427066A1
公开(公告)日：2024-12-26
申请号：US18827960
申请日：2024-09-09
Applicant: Japan Display Inc.
Inventor： Ayaka HIGUCHI , Shinichiro OKA , Yasushi TOMIOKA , Koichi IGETA
IPC: G02B5/18
Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, an alignment film, and a liquid crystal layer. The alignment film includes a plurality of first areas and a second area. The liquid crystal layer includes a first alignment area overlapping with the first area and including a plurality of first liquid crystal molecules forming an alignment pattern in which longitudinal axes of the first liquid crystal molecules successively vary and a second alignment area overlapping with the second area and including a plurality of second liquid crystal molecules, longitudinal axes of the plurality of second liquid crystal molecules being arranged in the same direction.
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公开(公告)号：US20240361505A1
公开(公告)日：2024-10-31
申请号：US18645884
申请日：2024-04-25
Applicant: Japan Display Inc.
Inventor： Koichi IGETA , Yasushi TOMIOKA , Hiroumi KINJO , Shinichiro OKA
CPC classification number: G02B5/3016 , G02B5/1833 , G02B5/1847 , G02F2202/28
Abstract: A manufacturing method of a liquid crystal optical element includes preparing a liquid crystal film having a cholesteric liquid crystal, preparing a transparent substrate in which at least a material forming a main surface is an inorganic material, applying a solution containing a silane coupling agent to the main surface of the transparent substrate, stacking the liquid crystal film on the silane coupling agent, and heating the silane coupling agent.
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公开(公告)号：US20240184028A1
公开(公告)日：2024-06-06
申请号：US18442385
申请日：2024-02-15
Applicant: Japan Display Inc.
Inventor： Koichi IGETA , Shinichiro OKA , Yasushi TOMIOKA , Junji KOBASHI
IPC: G02B5/30
CPC classification number: G02B5/3016
Abstract: According to one embodiment, a liquid crystal optical element including a first substrate including a first transparent substrate, a first alignment film, and a first liquid crystal layer which includes first cholesteric liquid crystals, and which reflects part of light incident through the first transparent substrate toward the first transparent substrate, a second substrate including a second transparent substrate, a second alignment film, and a second liquid crystal layer which includes second cholesteric liquid crystals, and which reflects part of light transmitted through the first liquid crystal layer toward the first transparent substrate, and a transparent adhesive layer which adheres the first substrate and the second substrate.
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公开(公告)号：US20230246590A1
公开(公告)日：2023-08-03
申请号：US18193726
申请日：2023-03-31
Applicant: Japan Display Inc. , OSAKA UNIVERSITY
Inventor： Junji KOBASHI , Shinichiro OKA , Yasushi TOMIOKA , Hiroyuki YOSHIDA
CPC classification number: H02S40/22 , G02B5/3016
Abstract: According to one embodiment, a solar power generation apparatus includes an optical waveguide that includes a first main surface, a second main surface, and a lower side surface, an optical element that faces the second main surface, includes cholesteric liquid crystal, and reflects at least a part of ultraviolet ray of incident light from the first main surface toward the optical waveguide, and a solar cell that faces the lower side surface. The optical element includes a reflective surface angled with respect to a boundary surface between the optical waveguide and the optical element. An inclination angle of the reflective surface with respect to the boundary surface is an acute angle toward the solar cell.
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公开(公告)号：US20230146964A1
公开(公告)日：2023-05-11
申请号：US18091384
申请日：2022-12-30
Applicant: Japan Display Inc. , OSAKA UNIVERSITY
Inventor： Shinichiro OKA , Yasushi TOMIOKA , Junji KOBASHI , Hiroyuki YOSHIDA
IPC: H01L31/054 , G02F1/133 , G02F1/137
CPC classification number: H01L31/0547 , G02F1/13324 , G02F1/13718
Abstract: According to one embodiment, a photovoltaic cell device includes an optical waveguide, an optical element, and a photovoltaic cell. The optical element includes a first liquid crystal layer which contains a cholesteric liquid crystal, reflects, of visible light, circularly polarized light of one of first circularly polarized light and second circularly polarized light rotating in an opposite direction of the first circularly polarized light toward the optical waveguide and the photovoltaic cell, and transmits the other circularly polarized light. The first liquid crystal layer reflects one of the first circularly polarized light and the second circularly polarized light of part of wavelength ranges.
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Patent Agency Ranking
公开(公告)号：US20230136958A1
公开(公告)日：2023-05-04
申请号：US18091387
申请日：2022-12-30
Applicant: Japan Display Inc. , OSAKA UNIVERSITY
Inventor： Shinichiro OKA , Yasushi TOMIOKA , Junji KOBASHI , Hiroyuki YOSHIDA
IPC: H01L31/054 , G02B6/42
Abstract: According to one embodiment, a photovoltaic cell device includes a first optical waveguide including a first main surface, a second main surface facing the first main surface, and a first side surface, an optical element facing the second main surface, containing a cholesteric liquid crystal, and reflecting at least part of light incident on the first main surface toward the first optical waveguide, and a first photovoltaic cell facing the first side surface. The first photovoltaic cell is attached to the first side surface by a transparent first adhesive layer.
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公开(公告)号：US20220399403A1
公开(公告)日：2022-12-15
申请号：US17838314
申请日：2022-06-13
Applicant: Japan Display Inc.
Inventor： Isao SUZUMURA , Kento HIMOTO , Takashi NAKAMURA , Masahiro TADA , Yasushi TOMIOKA
Abstract: A photo detecting device, includes a plurality of photodiodes arranged above a substrate, a lower electrode and a first inorganic insulating film that are provided between the substrate and the photodiodes in a direction orthogonal to a surface of the substrate, and an upper electrode provided above the photodiodes. Each of the photodiodes comprises an active layer, a first carrier transport layer provided between the active layer and the lower electrode, and a second carrier transport layer provided between the active layer and the upper electrode, the first inorganic insulating film is provided between the lower electrode and the first carrier transport layer, and the first inorganic insulating film covers at least an end on an outer edge side of the lower electrode.
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公开(公告)号：US20220320440A1
公开(公告)日：2022-10-06
申请号：US17655448
申请日：2022-03-18
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Akio TAKIMOTO
Abstract: A method for manufacturing a photoelectric conversion element according to an aspect includes an active layer forming step of forming an active layer having a repeating unit represented by Chemical Formula 1. The active layer forming step includes: a first layer forming step of forming a first layer by applying polyamic acid serving as a precursor; a first heating step of heating the first layer at 120° C. for 20 minutes to 60 minutes; and a second heating step of heating the first layer at 230° C. to 280° C. for 10 minutes.
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公开(公告)号：US20220299825A1
公开(公告)日：2022-09-22
申请号：US17655085
申请日：2022-03-16
Applicant: Japan Display Inc.
Inventor： Junji KOBASHI , Shinichiro OKA , Yasushi TOMIOKA , Koichi IGETA
IPC: G02F1/1337
Abstract: According to one embodiment, a liquid crystal element includes a transparent substrate including a first main surface, a plurality of structures disposed on the first main surface and arranged along one direction, an alignment film disposed on a surface of each of the structures and a liquid crystal layer containing a cholesteric liquid crystal and in contact with the alignment film, and the helical axis of the cholesteric liquid crystal is inclined with respect to the first main surface, each of the plurality of structures includes a first surface inclined with respect to the first main surface, in the plurality of structures, the first surfaces are parallel to each other, and the alignment film is interposed between the first surface and the liquid crystal layer.
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公开(公告)号：US20220146889A1
公开(公告)日：2022-05-12
申请号：US17515903
申请日：2021-11-01
Applicant: Japan Display Inc.
Inventor： Junji KOBASHI , Shinichiro OKA , Yasushi TOMIOKA , Koichi IGETA
IPC: G02F1/1337 , G02F1/137
Abstract: According to one embodiment, a liquid crystal optical element includes a substrate having a first surface, a plurality of structures disposed on the first surface and arranged at a predetermined pitch, and a liquid crystal layer surrounding each of the structures and interposed between the structures adjacent to each other. The liquid crystal layer has a larger thickness than the structure. The liquid crystal layer has liquid crystal molecules arranged along the structure, and is cured in a state in which an alignment direction of the liquid crystal molecules is fixed.
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