公开(公告)号：US20250004322A1

公开(公告)日：2025-01-02

申请号：US18885794

申请日：2024-09-16

Applicant: Japan Display Inc.

Inventor： Kazuki MATSUNAGA ,  Shinichiro OKA ,  Mitsutaka OKITA ,  Daiichi SUZUKI

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/1362

Abstract: A reflecting device in an embodiment according to the present invention includes common electrodes arranged in a matrix at a distance in a first direction and a second direction intersecting the first direction, bias electrodes arranged overlapping the common electrodes in a planar view, a liquid crystal layer between the common electrodes and the bias electrodes, and common wirings connecting adjacent common electrodes among the common electrodes. Each of the common wirings has a length of half an effective wavelength λg when a radio wave of a specific wavelength λ propagates through the liquid crystal layer.

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：US20240322429A1

公开(公告)日：2024-09-26

申请号：US18673910

申请日：2024-05-24

Applicant: Japan Display Inc.

Inventor： Daiichi SUZUKI ,  Shinichiro OKA ,  Shigesumi ARAKI ,  Mitsutaka OKITA

IPC: H01Q3/46 ,  G02F1/1343 ,  H01Q3/36 ,  H01Q15/14

CPC classification number: H01Q3/46 ,  G02F1/134336 ,  H01Q3/36 ,  H01Q15/148

Abstract: According to one embodiment, an intelligent reflecting surface includes a plurality of individual areas, each of the individual areas including a first area and one or more second areas, a connection area, a first substrate including a plurality of patch electrodes, a second substrate including a common electrode, the common electrode being located in the first area of each of the individual areas and the connection area and being opposed to the patch electrodes, and a liquid crystal layer held between the first substrate and the second substrate and opposed to the patch electrodes.

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：US20240103322A1

公开(公告)日：2024-03-28

申请号：US18530320

申请日：2023-12-06

Applicant: Japan Display Inc.

Inventor： Shigesumi ARAKI ,  Mitsutaka OKITA ,  Daiichi SUZUKI ,  Shinichiro OKA

IPC: G02F1/1343 ,  G02F1/1335 ,  H01Q3/36

CPC classification number: G02F1/134309 ,  G02F1/133553 ,  H01Q3/36

Abstract: A phase modulating device includes a first electrode; a second electrode; and a liquid crystal layer including a plurality of liquid crystal molecules and arranged between the first electrode and the second electrode, wherein a height of the liquid crystal layer from the first electrode toward the second electrode is 30 μm or more and 50 μm or less, and in a planar view of a first plane including the first electrode, the liquid crystal layer and the second electrode, the first plane intersecting with an in-plane direction of the first electrode, at least two liquid crystal molecules arranged adjacent to each other in a direction parallel to the in-plane direction of the first electrode and oriented differently from each other are included.

公开(公告)号：US20230400747A1

公开(公告)日：2023-12-14

申请号：US18451122

申请日：2023-08-17

Applicant: Japan Display Inc.

Inventor： Shinichiro OKA ,  Mitsutaka OKITA ,  Daiichi SUZUKI ,  Shigesumi ARAKI

IPC: G02F1/313 ,  G02F1/00

CPC classification number: G02F1/313 ,  G02F1/0045 ,  G02F1/009 ,  G02F2201/121 ,  G02F2203/02

Abstract: According to one embodiment, an intelligent reflecting device includes a first substrate including a first base and a plurality of patch electrodes, a second substrate including a second base and a common electrode opposed to the plurality of patch electrodes, a liquid crystal layer held between the first and second substrates, a heat exchanger provided in contact with the second substrate, a temperature sensor, and a temperature controller that controls the heat exchanger based on the temperature detected by the temperature sensor, wherein an incident wave is incident on an incidence surface of the first substrate, and the heat exchanger is provided on a surface opposed to the incidence surface.

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.