公开(公告)号：US20250044634A1

公开(公告)日：2025-02-06

申请号：US18789986

申请日：2024-07-31

Applicant: Japan Display Inc.

Inventor： Yasushi IWAKABE ,  Koichi IGETA

IPC: G02F1/1334 ,  G02F1/1337 ,  G02F1/1339

Abstract: According to one embodiment, a display device includes a first substrate having a plurality of switching elements, a second substrate disposed to oppose the first substrate, a sealing member disposed between the first substrate and the second substrate, and a polymer dispersed liquid crystal layer containing a polymer and liquid crystal molecules and disposed between the first substrate and the second substrate and in a region surrounded by the sealing member, and the polymer dispersed liquid crystal layer has a nematic-isotropic transition temperature higher than a curing temperature of the sealing member.

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.

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

IPC: G02B5/30 ,  G02B5/18

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.

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.

公开(公告)号：US20240019738A1

公开(公告)日：2024-01-18

申请号：US18350176

申请日：2023-07-11

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Kentaro OKUYAMA ,  Koji KITAMURA

IPC: G02F1/1337 ,  C09K19/54

CPC classification number: G02F1/133711 ,  G02F1/133788 ,  G02F1/133715 ,  C09K19/542 ,  C09K2019/546 ,  C09K2323/025

Abstract: According to one embodiment, a display device includes first and second substrates and a liquid crystal layer. The first substrate includes pixel electrodes and a first alignment film. The second substrate includes a common electrode and a second alignment film. The liquid crystal layer is provided between the alignment films and contains a streaky polymer and liquid crystal molecules. The first alignment film includes flat areas. A first director of the liquid crystal molecules located near the flat areas is substantially parallel to a horizontal plane in a state where no potential difference is formed between the pixel electrodes and the common electrode.

公开(公告)号：US20240004240A1

公开(公告)日：2024-01-04

申请号：US18467730

申请日：2023-09-15

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Ayaka HIGUCHI

IPC: G02F1/1337 ,  G02F1/1334 ,  C09K19/38

CPC classification number: G02F1/133788 ,  G02F1/1334 ,  C09K19/3809

Abstract: According to one embodiment, a method of manufacturing a display device comprises applying an alignment film material containing a photolytic component and a non-photolytic component to a surface of a first substrate and a surface of a second substrate, forming a first alignment film on the first substrate and a second alignment film on the second substrate, introducing a liquid crystal material containing liquid crystal molecules and a polymerizable monomer between the first alignment film and the second alignment film, and applying ultraviolet light to the liquid crystal material to polymerize the polymerizable monomer in the liquid crystal material to form a polymer dispersed liquid crystal layer.

公开(公告)号：US20230280625A1

公开(公告)日：2023-09-07

申请号：US17942587

申请日：2022-09-12

Applicant: Japan Display Inc.

Inventor： Koichi IGETA

IPC: G02F1/1368 ,  G02F1/1362

CPC classification number: G02F1/1368 ,  G02F1/136209 ,  G02F1/136222

Abstract: The purpose of the present invention is to realize a high contrast ratio in a liquid crystal display device by stacking two liquid crystal display panels without deterioration of screen brightness and weather resistance. The concrete structure is as follows. A liquid crystal display device including; a first liquid crystal display panel, a second liquid crystal display panel and a back light being superposed; in which a negative type liquid crystal is used in one of the first liquid crystal display panel and the second liquid crystal display panel, a TFT and a color filter are formed on the TFT substrate, the counter substrate is nearer to the back light than the TFT substrate is, and a color filter is not formed in a liquid crystal display panel of another one of the first liquid crystal display panel and the second liquid crystal display panel.

公开(公告)号：US20220359771A1

公开(公告)日：2022-11-10

申请号：US17659373

申请日：2022-04-15

Applicant: Japan Display Inc.

Inventor： Shinichiro OKA ,  Koichi IGETA

IPC: H01L31/0232 ,  H01L31/054

Abstract: According to one embodiment, a photovoltaic cell module includes a light guide including a first main surface, a second main surface, a first side surface, a second side surface, a third side surface and a fourth side surface, an optical element opposing the second main surface, containing a cholesteric liquid crystal forming a reflective surface inclined with respect to the second main surface, and configured to reflect at least a part of light entering from the first main surface toward the light guide, a photovoltaic cell opposing the first side surface and a reflective member opposing the second side surface, the third side surface and the fourth side surface.

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.

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.