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.

公开(公告)号：US20250068008A1

公开(公告)日：2025-02-27

申请号：US18806799

申请日：2024-08-16

Applicant: Japan Display Inc.

Inventor： Kasumi HASE ,  Koichi IGETA ,  Yoshiro AOKI

IPC: G02F1/1333 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/1339

Abstract: A liquid crystal panel is configured to include: a first substrate having a flat plate shape; a second substrate arranged to face the first substrate; a liquid crystal sandwiched between the first substrate and the second substrate; a hole region, at least a part of which is set to either a light passage state or a light shielding state, the hole region being arranged between substrates that are the first substrate and the second substrate; a seal part arranged between the substrates to surround the hole region and have a cylindrical shape; and a structure arranged between the substrates to be in contact with an outer surface of the seal part and surround the seal part, and the liquid crystal is sealed into the cylinder configuring the seal part.

公开(公告)号：US20240427195A1

公开(公告)日：2024-12-26

申请号：US18826422

申请日：2024-09-06

Applicant: Japan Display Inc.

Inventor： Shinichiro OKA ,  Yasushi TOMIOKA ,  Koichi IGETA ,  Ayaka HIGUCHI ,  Tsuyoshi IYAMA ,  Ryoichi MATSUMOTO ,  Kiyoshi SHOHARA ,  Takeshi YAMAMOTO

IPC: G02F1/1337

Abstract: According to one embodiment, a liquid crystal optical element according to one embodiment includes a substrate, a plurality of structures aligned at a prescribed pitch in each of a plurality of first areas, and a liquid crystal layer arranged across the plurality of first areas and a second area surrounding each of the plurality of first areas. The liquid crystal layer includes first liquid crystal molecules arranged in the first areas between the adjacent structures and aligned along the structures, and second liquid crystal molecules having the long axes aligned in the same direction in the second area.

公开(公告)号：US20240393635A1

公开(公告)日：2024-11-28

申请号：US18670195

申请日：2024-05-21

Applicant: Japan Display Inc.

Inventor： Kasumi HASE ,  Koichi IGETA ,  Kentaro OKUYAMA

IPC: G02F1/1334 ,  G02F1/13357 ,  G02F1/1343 ,  G02F1/137

Abstract: According to an aspect, a display device includes: a first substrate; a second substrate facing the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a light source disposed so that light is incident on a side surface of the first substrate or a side surface of the second substrate; a first electrode provided on the first substrate; and second electrodes provided on the second substrate. The liquid crystal layer includes polymer-dispersed liquid crystals including a polymer network formed in a mesh shape and liquid crystal molecules held in a dispersed manner in gaps of the polymer network. A plurality of first slits of the second electrodes that are provided for each pixel are arranged at predetermined intervals in a first direction, and the first slits extend in a second direction intersecting the first direction.