公开(公告)号：US20230375874A1

公开(公告)日：2023-11-23

申请号：US18318122

申请日：2023-05-16

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Koichi IGETA ,  Yasushi TOMIOKA ,  Shinichiro OKA ,  Hiroyuki YOSHIDA

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/13363

CPC classification number: G02F1/133543 ,  G02F1/133703 ,  G02F1/133636

Abstract: According to one embodiment, a liquid crystal optical element comprises a transparent substrate comprising a first main surface and a second main surface opposed to the first main surface, an alignment film disposed on the second main surface, and a liquid crystal layer overlapping the alignment film and comprising a cholesteric liquid crystal and an additive exhibiting a liquid crystalline property. Refractive anisotropy of the additive is greater than refractive anisotropy of the liquid crystal layer.

公开(公告)号：US20230375764A1

公开(公告)日：2023-11-23

申请号：US18319000

申请日：2023-05-17

Applicant: Japan Display Inc. ,  Osaka University

Inventor： Koichi IGETA ,  Shinichiro OKA ,  Yasushi TOMIOKA ,  Hiroyuki YOSHIDA

IPC: G02B5/30 ,  G02B5/18 ,  C09K19/36 ,  C09K19/54

CPC classification number: G02B5/3016 ,  G02B5/1833 ,  G02B5/1857 ,  C09K19/36 ,  C09K19/54

Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate including a main surface, an alignment film disposed on the main surface, and a liquid crystal layer overlapping the alignment film and including a cholesteric liquid crystal including liquid crystal molecules stacked helically and an additive exhibiting a liquid crystalline property. In the liquid crystal layer, a reflective surface along which alignment directions of the liquid crystal molecules are identical is inclined with respect to the main surface.

公开(公告)号：US20230258849A1

公开(公告)日：2023-08-17

申请号：US18304810

申请日：2023-04-21

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Shinichiro OKA ,  Yasushi TOMIOKA ,  Junji KOBASHI ,  Hiroyuki YOSHIDA

IPC: G02B5/18 ,  G02B5/30

CPC classification number: G02B5/1833 ,  G02B5/3016 ,  G02B5/208

Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a first alignment film, a second alignment film opposite to the first alignment film, a spacer between the substrate and the second alignment film, and a liquid crystal layer in contact with the first alignment film and the second alignment film. The liquid crystal layer includes liquid crystal molecules including a plurality of first liquid crystal molecules arranged along a boundary surface with the first alignment film and a plurality of second liquid crystal molecules arranged along a boundary surface with the second alignment film, and is cured in a state where alignment directions of the liquid crystal molecules are fixed.

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：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.