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：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

IPC: H02S40/22 ,  G02B5/30

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.

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.

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.

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.