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：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：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：US20250013102A1

公开(公告)日：2025-01-09

申请号：US18760488

申请日：2024-07-01

Applicant: Japan Display Inc.

Inventor： Ayaka HIGUCHI ,  Shinichiro OKA ,  Koichi IGETA ,  Junji KOBASHI

IPC: G02F1/1337 ,  G02F1/13363

Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate having a first main surface, an alignment control layer having a plurality of convex bodies, and a liquid crystal layer having a cholesteric liquid crystal. The alignment control layer has a first alignment area in which the convex bodies are arranged at a first pitch, and a second alignment area in which the convex bodies are arranged at a second pitch. The second pitch is less than the first pitch. The liquid crystal layer has a first liquid crystal area which overlaps the first alignment area, and a second liquid crystal area which overlaps the second alignment area.

公开(公告)号：US20240377681A1

公开(公告)日：2024-11-14

申请号：US18660333

申请日：2024-05-10

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Koichi IGETA ,  Ayaka HIGUCHI ,  Junji KOBASHI ,  Yasushi TOMIOKA ,  Shinichiro OKA ,  Hiroyuki YOSHIDA

IPC: G02F1/1337 ,  G02F1/1335

Abstract: According to one embodiment, an alignment processing device includes a light source, a polarizing beam splitter, a first optical system, a second optical system, a first retardation film, a second retardation film, a moving mechanism configured to move a processing substrate in which a thin film is formed, and a controller. Interfering light is formed in an exposure area by first circularly polarized light and second circularly polarized light. The controller performs control so as to repeat a process of exposing part of an area of the thin film by the interfering light and a process of moving the processing substrate.

公开(公告)号：US20240045273A1

公开(公告)日：2024-02-08

申请号：US18363134

申请日：2023-08-01

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Shinichiro OKA ,  Koichi IGETA ,  Junji KOBASHI ,  Ayaka HIGUCHI

IPC: G02F1/1337 ,  G02F1/1347 ,  H01L31/054

CPC classification number: G02F1/133788 ,  G02F1/133726 ,  G02F1/13478 ,  H01L31/054

Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a first alignment control layer disposed on the substrate and comprising projections arranged at a predetermined pitch, and a first liquid crystal layer disposed on the first alignment control layer. The first liquid crystal layer comprises liquid crystal molecules which are aligned such that major axes of the liquid crystal molecules extend along the projections, respectively, and cured in a state where alignment directions of the liquid crystal molecules are fixed. The first alignment control layer is formed of a crosslinkable liquid crystal polymer.

公开(公告)号：US20230408743A1

公开(公告)日：2023-12-21

申请号：US18331389

申请日：2023-06-08

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

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

IPC: G02B5/30

CPC classification number: G02B5/3016

Abstract: According to one embodiment, a liquid crystal optical element includes a first liquid crystal layer including a first cholesteric liquid crystal and a second liquid crystal layer including a second cholesteric liquid crystal, a helical pitch of each of the first cholesteric liquid crystal and the second cholesteric liquid crystal changing continuously. The first cholesteric liquid crystal including a first portion having a first helical pitch and a second portion having a second helical pitch different from the first helical pitch. The second cholesteric liquid crystal including a third portion having a third helical pitch and a fourth portion having a fourth helical pitch different from the third helical pitch.

公开(公告)号：US20220100039A1

公开(公告)日：2022-03-31

申请号：US17448718

申请日：2021-09-24

Applicant: Japan Display Inc.

Inventor： Ayaka HIGUCHI ,  Koichi IGETA

IPC: G02F1/1337 ,  G02F1/1339 ,  G02F1/1335

Abstract: The purpose of the present invention is to realize the photo alignment film which has good alignment ability and good adhesive strength with the seal material. The structure of the invention is:
A liquid crystal display device including a first substrate, having pixel electrodes and a first alignment film, and a second substrate adhere to each other by seal material, and the liquid crystal being sealed inside, in which the first alignment film is formed from a first polyimide, which receives a photo alignment treatment, and a second polyimide, which does not receive the photo alignment treatment, the first polyimide exists 75 to 98 weight % at a surface of the first alignment film on the pixel electrode and at an interface with the seal material, the second polyimide increases gradually in going to depth direction from the surface of the first alignment film in a cross sectional view.