公开(公告)号：US20250044654A1

公开(公告)日：2025-02-06

申请号：US18923818

申请日：2024-10-23

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Toshimasa ISHIGAKI ,  Hidehiro SONODA ,  Sumito UETA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1368

Abstract: A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

公开(公告)号：US20240431127A1

公开(公告)日：2024-12-26

申请号：US18743602

申请日：2024-06-14

Applicant: Japan Display Inc.

Inventor： Motochika YUKAWA ,  Yasushi TOMIOKA

IPC: H10K39/32 ,  H10K30/82 ,  H10K30/88 ,  H10K71/20 ,  H10K71/60 ,  H10K102/10

Abstract: A light detection device includes a lower structure that is provided in a detection area and in a frame area surrounding the detection area, a plurality of pixel electrodes that are provided in array on the lower structure in the detection area, an organic photoelectric conversion layer that is provided on the plurality of pixel electrodes and continuously formed on the detection area and a part of the frame area, an upper electrode that is provided on the organic photoelectric conversion layer, and a transparent conductive protective layer that is provided on the lower structure in at least a part of the frame area and at least partially disposed under a part of a peripheral edge portion of the organic photoelectric conversion layer formed in the frame area.

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：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：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

IPC: H01L27/30 ,  H01L51/42 ,  H01L51/44

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.

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

IPC: H01L51/00 ,  H01L51/44 ,  G06F3/042

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.