公开(公告)号：US11640091B2

公开(公告)日：2023-05-02

申请号：US17656279

申请日：2022-03-24

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Tenfu Nakamura ,  Kentaro Okuyama

IPC: G02F1/1362 ,  G02F1/1368

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer which includes a stripe-like polymer and first liquid crystal molecules having responsiveness to an electric field, a light source and a transparent film which includes second liquid crystal molecules which are not responsive to an electric field. The second liquid crystal molecules have a large inclination angle with respect to the horizontal plane of the transparent film in a first region that is separate from the light source, and have, in a second region positioned between the light source and the first region, a smaller inclination angle than the inclination angle in the first region with respect to the horizontal plane of the transparent film.

公开(公告)号：US11624948B2

公开(公告)日：2023-04-11

申请号：US17495236

申请日：2021-10-06

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1334 ,  G02F1/1343 ,  G02F1/13357

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.

公开(公告)号：US11619841B2

公开(公告)日：2023-04-04

申请号：US17542759

申请日：2021-12-06

Applicant: Japan Display Inc.

Inventor： Hiroki Sugiyama ,  Kentaro Okuyama ,  Yoshihide Ohue ,  Yuuji Oomori

IPC: G02F1/1333 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/1339 ,  G02F1/1334 ,  G02F1/1337

Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.

公开(公告)号：US11604388B2

公开(公告)日：2023-03-14

申请号：US17474205

申请日：2021-09-14

Applicant: Japan Display Inc.

Inventor： Tenfu Nakamura ,  Kojiro Ikeda ,  Kentaro Okuyama

IPC: G02F1/1343 ,  G02F1/1339 ,  G02F1/1334

Abstract: According to one embodiment, a display device includes a first substrate including a pixel electrode, a second substrate including a common electrode, a liquid crystal layer located between the first substrate and the second substrate and containing polymer and liquid crystal molecules, and a light emitting element opposed to an end surface of the second substrate, the common electrode being separated from the pixel electrode by a first distance, at a first position, the common electrode being separated from the pixel electrode by a second distance, at a second position more separated from the light emitting element than the first position, the second distance being smaller than the first distance.

公开(公告)号：US11561423B2

公开(公告)日：2023-01-24

申请号：US16689219

申请日：2019-11-20

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Yoshihide Ohue ,  Hiroki Sugiyama ,  Tomoyuki Tada

IPC: G02F1/1333 ,  H01L27/12 ,  G02F1/1368 ,  G02F1/1339 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/13357 ,  G02F1/1334

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.

公开(公告)号：US11543580B2

公开(公告)日：2023-01-03

申请号：US17662511

申请日：2022-05-09

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

IPC: F21V8/00 ,  G02F1/1334 ,  G02F1/1339

Abstract: According to one embodiment, a display device includes a first transparent substrate, a second transparent substrate, a liquid crystal layer, light-emitting elements disposed in a first direction, a third transparent substrate including a main surface and a side surface opposed to the light-emitting elements, and a transparent layer disposed on the main surface and having a lower refractive index than the third transparent substrate. The third transparent substrate is bonded to the first transparent substrate or the second transparent substrate with the transparent layer sandwiched in between. The transparent layer includes strip portions disposed in the first direction and extended along a second direction.

公开(公告)号：US11513408B2

公开(公告)日：2022-11-29

申请号：US17403000

申请日：2021-08-16

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Kentaro Okuyama ,  Tenfu Nakamura

IPC: G02F1/1362 ,  G02F1/1333 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.

公开(公告)号：US20220326576A1

公开(公告)日：2022-10-13

申请号：US17706916

申请日：2022-03-29

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Kentaro Okuyama

IPC: G02F1/1337 ,  G02F1/1334 ,  G02F1/137

Abstract: According to an aspect, a liquid crystal display device includes: a first light-transmitting substrate; a second light-transmitting substrate disposed so as to be opposed to the first light-transmitting substrate; a liquid crystal layer sealed between the first light-transmitting substrate and the second light-transmitting substrate; alignment films that are provided to the first light-transmitting substrate and the second light-transmitting substrate, respectively, and are in contact with the liquid crystal layer; and at least one light emitter disposed so as to be opposed to at least one of side surfaces of the first light-transmitting substrate and the second light-transmitting substrate. The liquid crystal layer includes a polymer-dispersed liquid crystal comprising a polymer network formed in a mesh shape and liquid crystal molecules held in a dispersed manner in gaps of the polymer network, and each of the alignment films comprises a photocrosslinkable group connected to the polymer network.

公开(公告)号：US11460739B2

公开(公告)日：2022-10-04

申请号：US17336786

申请日：2021-06-02

Applicant: Japan Display Inc.

Inventor： Manabu Mizuno ,  Yoshihide Ohue ,  Hiroki Sugiyama ,  Kentaro Okuyama

IPC: G02F1/137 ,  G02F1/1362 ,  G02F1/1334 ,  G02F1/13357 ,  G09G3/34 ,  G09G3/36 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1368

Abstract: A display device includes: an array substrate including a plurality of first light-transmitting electrodes each disposed in a corresponding one of pixels; a counter substrate including positions overlapping the first light-transmitting electrodes and provided with a second light-transmitting electrode; a liquid crystal layer including polymer-dispersed liquid crystals filled between the array substrate and the counter substrate; and at least one light source configured to emit light toward a side surface of the counter substrate. The array substrate includes, in each of the pixels, a third light-transmitting electrode that at least partially overlaps the first light-transmitting electrode in the plan view with an insulating layer interposed therebetween. An area of the third light-transmitting electrode in the pixel in a display region closer to the light source is larger than an area of the third light-transmitting electrode in the pixel in a display region farther from the light source.

公开(公告)号：US11448819B2

公开(公告)日：2022-09-20

申请号：US17221868

申请日：2021-04-05

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Kentaro Okuyama

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

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.