公开(公告)号：US20240019738A1

公开(公告)日：2024-01-18

申请号：US18350176

申请日：2023-07-11

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Kentaro OKUYAMA ,  Koji KITAMURA

IPC: G02F1/1337 ,  C09K19/54

CPC classification number: G02F1/133711 ,  G02F1/133788 ,  G02F1/133715 ,  C09K19/542 ,  C09K2019/546 ,  C09K2323/025

Abstract: According to one embodiment, a display device includes first and second substrates and a liquid crystal layer. The first substrate includes pixel electrodes and a first alignment film. The second substrate includes a common electrode and a second alignment film. The liquid crystal layer is provided between the alignment films and contains a streaky polymer and liquid crystal molecules. The first alignment film includes flat areas. A first director of the liquid crystal molecules located near the flat areas is substantially parallel to a horizontal plane in a state where no potential difference is formed between the pixel electrodes and the common electrode.

公开(公告)号：US20240019622A1

公开(公告)日：2024-01-18

申请号：US18359029

申请日：2023-07-26

Applicant: Japan Display Inc.

Inventor： Yudai NUMATA ,  Kentaro OKUYAMA

IPC: F21V8/00

CPC classification number: G02B6/005 ,  G02B6/0091 ,  G02F1/13347

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：US20230359096A1

公开(公告)日：2023-11-09

申请号：US18224401

申请日：2023-07-20

Applicant: JAPAN DISPLAY INC.

Inventor： Tenfu NAKAMURA ,  Kentaro OKUYAMA ,  Kojiro IKEDA

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1334

CPC classification number: G02F1/136286 ,  H01L27/124 ,  G02F1/1334

Abstract: According to one embodiment, a display device including a liquid crystal layer containing strip-like polymers and liquid crystal molecules, a third transparent substrate, and a transparent layer disposed on the third transparent substrate and having a refractive index lower than that of the third transparent substrate, wherein the transparent layer includes strip portions which include first and second end portions, and a middle portion, the first end portion has a first width greater than a width of the middle portion, the second end portion has a second width greater than the width of the middle portion, and first wiring lines overlap the strip portions, respectively and extend in a same direction.

公开(公告)号：US20230359087A1

公开(公告)日：2023-11-09

申请号：US18351788

申请日：2023-07-13

Applicant: Japan Display Inc.

Inventor： Kojiro IKEDA ,  Tenfu NAKAMURA ,  Kentaro OKUYAMA ,  Zhengyi GOU ,  Hisanori KAWAKAMI

IPC: G02F1/1368 ,  G02F1/13357 ,  G02F1/1362

CPC classification number: G02F1/133615 ,  G02F1/136286 ,  G02F1/1368

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer, a first light guide element and a light-emitting element. The liquid crystal layer contains stringy polymers and liquid crystal molecules. The first light guide element includes a third transparent substrate including a side surface and a main surface, and a transparent layer disposed on the main surface and having a refractive index lower than that of the third transparent substrate. The light-emitting element opposes the side surface, and the third transparent substrate is adhered to the second transparent substrate while interposing the transparent layer therebetween. The light-emitting element is disposed on the second transparent substrate.

公开(公告)号：US20230314887A1

公开(公告)日：2023-10-05

申请号：US18331420

申请日：2023-06-08

Applicant: Japan Display Inc.

Inventor： Kojiro IKEDA ,  Kentaro OKUYAMA ,  Tenfu NAKAMURA

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

CPC classification number: G02F1/136286 ,  G02F1/133365 ,  G09G3/3677 ,  G02F1/136213 ,  G02F1/136295

Abstract: 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 includes a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer includes 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：US20230152645A1

公开(公告)日：2023-05-18

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 ,  G02F1/136277 ,  G02F1/136209 ,  G02F1/1334 ,  G02F1/133553 ,  G02F2201/123 ,  G02F2201/121

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：US20230152631A1

公开(公告)日：2023-05-18

申请号：US18097631

申请日：2023-01-17

Applicant: Japan Display Inc.

Inventor： Manabu MIZUNO ,  Kentaro OKUYAMA ,  Hiroshi INAMURA ,  Hiroki SUGIYAMA

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/1334 ,  G02F1/137

CPC classification number: G02F1/133615 ,  G02F1/133605 ,  G02B6/0076 ,  G02B6/0055 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/13756 ,  G02F1/1339

Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.

公开(公告)号：US20230033124A1

公开(公告)日：2023-02-02

申请号：US17873677

申请日：2022-07-26

Applicant: Japan Display Inc.

Inventor： Takayuki IMAI ,  Kentaro OKUYAMA

IPC: G09G3/36

Abstract: A display device includes: first and second substrates with a liquid crystal therebetween; pixel electrodes and a common electrode provided to the first or second substrate; a light source including first to third light sources; and an image processor generating a signal to be provided to each pixel based on an input image signal. A frame period includes a first subframe period in which the first light source is on, a second subframe period in which the second light source is on, a third subframe period in which the third light source is on, and a fourth subframe period in which one or more of the first to third light sources are on. The image processor divides a gradation value into two values smaller than the gradation value, allocates one of the two values to the fourth subframe period, and allocates the other value to the other first subframe period.

公开(公告)号：US20220373838A1

公开(公告)日：2022-11-24

申请号：US17747025

申请日：2022-05-18

Applicant: Japan Display Inc.

Inventor： Koji KITAMURA ,  Yoshihide OHUE ,  Kentaro OKUYAMA ,  Hiroya MORIMOTO ,  Masato KESHO

IPC: G02F1/1333 ,  G02F1/1362 ,  G02F1/1339 ,  G02F1/1335

Abstract: A display device includes a display region, a peripheral region around the display region, a sealing portion provided in the peripheral region to seal a liquid crystal layer, and a liquid crystal supply portion provided at a part of the sealing portion and interconnecting an outside of the sealing portion and the display region. The peripheral region includes a first peripheral region which is provided between the display region and the sealing portion and from which an insulating film is removed and a second peripheral region which is provided between the display region and the sealing portion and in which the insulating film covering a circuit is formed. A light blocking film arranged so as to straddle the first and second peripheral regions and extending linearly in an extending direction of a boundary between the first and second peripheral regions is formed on a substrate.

公开(公告)号：US20220244606A1

公开(公告)日：2022-08-04

申请号：US17727021

申请日：2022-04-22

Applicant: Japan Display Inc.

Inventor： Hiroki SUGIYAMA ,  Yoshihide OHUE ,  Manabu MIZUNO ,  Kentaro OKUYAMA

IPC: G02F1/1362 ,  G02F1/1368

Abstract: A display device according to an aspect 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 that overlap the first light-transmitting electrodes in a plan view and are 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 emitter 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 and a conductive metal layer. The third light-transmitting electrode at least partially overlaps the first light-transmitting electrode in the plan view with an inorganic insulating layer interposed therebetween, and the conductive metal layer is stacked on the third light-transmitting electrode.