公开(公告)号：US11237422B2

公开(公告)日：2022-02-01

申请号：US17071079

申请日：2020-10-15

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

IPC: G02F1/1334 ,  G02F1/1335 ,  G02F1/133 ,  F21V8/00 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/13357

Abstract: According to one embodiment, a display device includes a display panel, a light emitting element, a light guide layer and a first optical layer. The display panel includes a first substrate, a second substrate opposed to the first substrate, and a polymer dispersed liquid crystal layer which is held between the first substrate and the second substrate and contains a polymer and a liquid crystal molecule. The light guide layer has a first surface opposed to the display panel, and an edge opposed to the light emitting element. The first optical layer is located between the display panel and the light guide layer. A refractive index of the first optical layer is lower than a refractive index of the light guide layer.

公开(公告)号：US11181784B2

公开(公告)日：2021-11-23

申请号：US16829113

申请日：2020-03-25

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Hiroki Sugiyama ,  Yoshihide Ohue ,  Yudai Numata

IPC: G02F1/1339 ,  G02F1/1334

Abstract: According to one embodiment, a display device including a first substrate having a first end portion, a second substrate facing the first substrate and having a second end portion separated from the first end portion, a liquid crystal layer located between the first substrate and the second substrate, a light-emitting element facing the second end portion, a first sealing member bonding the first substrate and the second substrate together, and a low refractive area located between the first substrate and the second substrate, located between the second end portion and the first sealing member in planar view, and containing a material having a refractive index lower than that of the second substrate.

公开(公告)号：US10955714B2

公开(公告)日：2021-03-23

申请号：US16357500

申请日：2019-03-19

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Yudai Numata

IPC: G02F1/1362 ,  G02F1/1334 ,  G02F1/1335

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.

公开(公告)号：US10823886B2

公开(公告)日：2020-11-03

申请号：US15900991

申请日：2018-02-21

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Yudai Numata

IPC: G02B5/30 ,  G02B27/28 ,  G02B5/124 ,  G02B5/13 ,  G02B30/56 ,  G02F1/1362 ,  G09G3/36 ,  G02F1/1368

Abstract: According to one embodiment, a display device including a display unit which emits display light, an optical element which includes a first surface on the display unit side, and a second surface on a side opposite to the first surface, and transmits and reflects incident light, and a retroreflective element provided on the first surface side or the second surface side, wherein the retroreflective element includes first and second retroreflectors which retroreflect light made incident through the optical element, and a transmissive portion located between the first retroreflector and the second retroreflector.

公开(公告)号：US20180239068A1

公开(公告)日：2018-08-23

申请号：US15900991

申请日：2018-02-21

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Yudai Numata

IPC: G02B5/124 ,  G02B27/22 ,  G02B5/13 ,  G02B5/30

Abstract: According to one embodiment, a display device including a display unit which emits display light, an optical element which includes a first surface on the display unit side, and a second surface on a side opposite to the first surface, and transmits and reflects incident light, and a retroreflective element provided on the first surface side or the second surface side, wherein the retroreflective element includes first and second retroreflectors which retroreflect light made incident through the optical element, and a transmissive portion located between the first retroreflector and the second retroreflector.

公开(公告)号：US20170285402A1

公开(公告)日：2017-10-05

申请号：US15478579

申请日：2017-04-04

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Yudai Numata

IPC: G02F1/1335

CPC classification number: G02F1/133553 ,  G02B5/12 ,  G02B5/124 ,  G02B5/128 ,  G02B27/2292 ,  G02F1/13363

Abstract: According to one embodiment, a display device includes an optical element which transmits or reflects incident light, and a first reflective element including a first reflective portion and a second reflective portion. The first reflective portion retroreflects reflective light reflected on the optical element. The second reflective portion has an area less than an area of the first reflective portion and regularly reflects the reflective light.

公开(公告)号：US12001048B2

公开(公告)日：2024-06-04

申请号：US18328857

申请日：2023-06-05

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

IPC: F21V8/00 ,  G02F1/1333 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: G02B6/0088 ,  G02B6/0055 ,  G02B6/0075 ,  G02B6/0091 ,  G02F1/133331 ,  G02F1/133615 ,  G02F1/133616 ,  G02B6/0068 ,  G02F1/13347

Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.

公开(公告)号：US11754899B2

公开(公告)日：2023-09-12

申请号：US18157982

申请日：2023-01-23

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Yudai Numata

IPC: G02F1/1362 ,  G02F1/1334 ,  G02F1/1335

CPC classification number: G02F1/136286 ,  G02F1/1334 ,  G02F1/133553 ,  G02F1/136209 ,  G02F1/136277 ,  G02F2201/121 ,  G02F2201/123

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.

公开(公告)号：US11719877B2

公开(公告)日：2023-08-08

申请号：US17884975

申请日：2022-08-10

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

IPC: F21V8/00 ,  G02F1/13357 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/1334

CPC classification number: G02B6/0088 ,  G02B6/0055 ,  G02B6/0075 ,  G02B6/0091 ,  G02F1/133331 ,  G02F1/133615 ,  G02F1/133616 ,  G02B6/0068 ,  G02F1/13347

Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.

公开(公告)号：US11668867B2

公开(公告)日：2023-06-06

申请号：US17722836

申请日：2022-04-18

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Yudai Numata

IPC: F21V8/00 ,  G02F1/1334

CPC classification number: G02B6/0046 ,  G02B6/0055 ,  G02B6/0083 ,  G02F1/1334 ,  G02B6/0073

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.