公开(公告)号：US20230333307A1

公开(公告)日：2023-10-19

申请号：US18338521

申请日：2023-06-21

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: F21V8/00

CPC classification number: G02B6/0045 ,  G02B6/0055 ,  G02B6/0091 ,  G02B6/0046 ,  G02B6/0036 ,  G02B6/0048

Abstract: According to an embodiment, an illumination device includes a light guide having a first plane, a second plane opposed to the first plane and substantially parallel to the first plane, and a tilted plane opposed to the first plane and tilted to the first plane, the tilted plane and the second plane being arranged in a first direction, and a light emitting device including a first light emitting part, a second light emitting part, and a third light emitting part which are located directly below the tilted plane, arranged in the first direction, and configured to emit light having wavelengths different from each other.

公开(公告)号：US20230128012A1

公开(公告)日：2023-04-27

申请号：US17969695

申请日：2022-10-20

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: G02B27/01 ,  F21V8/00

Abstract: According to one embodiment, an illumination device includes a light guide, a plurality of light source elements, and a reflector including a first portion parallel to a second edge of the light guide and a second portion parallel to a third edge of the light guide, and the third edge includes first short edges extending in the first direction and second short edges extending in the second direction, which are alternately arranged, and the second portion includes first pieces extending in the first direction and second pieces extending in the second direction, which are alternately arranged.

公开(公告)号：US20230127372A1

公开(公告)日：2023-04-27

申请号：US17970681

申请日：2022-10-21

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: G03H1/22 ,  G02B5/30

Abstract: According to one embodiment, a display device includes a display panel, a holographic element which reflects light having a specific incident angle and transmits light having an incident angle different from the specific incident angle, a retardation film provided between the display panel and the holographic element, a transflective element which reflects, of the light which passed through the holographic element, first circularly polarized light, and transmits second circularly polarized light rotating in an opposite direction of the first circularly polarized light, and a lens element which has a lens effect of condensing the second circularly polarized light which passed through the transflective element.

公开(公告)号：US20220113544A1

公开(公告)日：2022-04-14

申请号：US17450482

申请日：2021-10-11

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/13363

Abstract: According to one embodiment, a display device including a display panel configured to emit display light of linear polarization, a first retardation plate, a second retardation plate, a reflective polarizer configured to pass first linear polarized light, and to reflect second linear polarized light, a transflective layer including a concave surface opposed to the second retardation plate, and a transparent solid with almost zero refractive anisotropy, wherein the first retardation plate and the second retardation plate are a quarter-wave plate, and the transparent solid includes a first surface shaped convex to be opposed to the concave surface, and a second surface opposed to the reflective polarizer.

公开(公告)号：US20230144819A1

公开(公告)日：2023-05-11

申请号：US17981558

申请日：2022-11-07

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: F21V8/00

CPC classification number: G02B6/0036 ,  G02B6/0045 ,  G02B6/0068

Abstract: According to one embodiment, an illumination device includes a light guide including a first main surface, a second main surface, a first side surface, and a second side surface, a plurality of convex portions provided on the second main surface, and a first light source element and a second light source element opposing the first side surface and the second side surface, respectively, and when an incident angle of a main ray of the light propagating in the light guide is expressed by θ, a diffusion angle of the light is δ, an angle of the convex portion of the light guide is α, a critical angle of the light guide is θc, and an angle which satisfies (90°−θc) is β0, a relationship: ((β0+δ)/3)

公开(公告)号：US20230114307A1

公开(公告)日：2023-04-13

申请号：US17962548

申请日：2022-10-10

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: H01S5/40

Abstract: According to one embodiment, an illumination device includes a light guide including an upper surface, a lower surface and a light entering surface, a first light emitting portion, a second light emitting portion, and a third light emitting portion. A first surface, a second surface, a third surface and a fourth surface of the upper surface are arranged in this order in a first direction. A width of the first surface is less than a width of the second surface, and the width of the second surface is less than a width of the third surface. An angle between the light entering surface and the first surface is an acute angle. The first light emitting portion, the second light emitting portion and the third light emitting portion face the light entering surface.

公开(公告)号：US20220365271A1

公开(公告)日：2022-11-17

申请号：US17663043

申请日：2022-05-12

Applicant: Japan Display Inc.

Inventor： Hiroaki KIJIMA ,  Shinichi KOMURA ,  Koichi OKUDA ,  Ken ONODA

IPC: F21V8/00

Abstract: According to one embodiment, an illumination device includes a first light guide including a first main surface, a second main surface, a first side surface and a second side surface, a first light source and a first layer including a first prism provided on the second side surface. The first prism protrudes from the second main surface toward the opposite side to the first main surface and has a cross-sectional shape of a triangle with a first slope and a second slope. The incident angle of light emitted from the first light source and entering the first light guide from the second side surface, the angle between the first slope and the first direction, and the angle between the first slope and the second slope are set to values that satisfy the predetermined conditions, respectively.

公开(公告)号：US20180107029A1

公开(公告)日：2018-04-19

申请号：US15730076

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Ken ONODA ,  Shinichi KOMURA ,  Youichi ASAKAWA ,  Toshihiko FUKUMA

IPC: G02F1/01 ,  F21V8/00 ,  G02F1/1335

CPC classification number: G02F1/0105 ,  G02B6/003 ,  G02B6/0036 ,  G02F1/133514 ,  G02F1/133526 ,  G02F1/133528 ,  G02F1/133615 ,  G02F2001/133607

Abstract: According to one embodiment, an illumination device includes a first member, a second member, a first light source. The first member includes a first prism array including first prisms aligned in a first direction. The second member includes a second prism array including second prisms aligned in a second direction. The second member disposed more closely to a first A side than to the first member. The first light source disposed more closely to a second A side than to the second member to apply a parallel light beam to a second B side. The parallel light beam from the first light source is made incident on the second prism array and incident on the first prism array without passing through a light guide.

公开(公告)号：US20170160458A1

公开(公告)日：2017-06-08

申请号：US15371380

申请日：2016-12-07

Applicant: Japan Display Inc.

Inventor： Youichi ASAKAWA ,  Toshihiko FUKUMA ,  Ken ONODA ,  Shinichi KOMURA

IPC: F21V8/00 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1333

CPC classification number: G02B6/0025 ,  G02B6/0036 ,  G02B6/0068 ,  G02F1/133308 ,  G02F1/133345 ,  G02F1/133502 ,  G02F1/133504 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/133553 ,  G02F1/133615 ,  G02F1/133617 ,  G02F1/13362 ,  G02F1/13363 ,  G02F1/134309 ,  G02F2001/133314 ,  G02F2001/13332 ,  G02F2001/133519 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2001/133618 ,  G02F2001/133638 ,  G02F2001/134345 ,  G02F2201/121 ,  G02F2201/123 ,  G02F2202/28 ,  G02F2202/36 ,  G02F2203/01 ,  G02F2203/055 ,  G02F2203/09

Abstract: In one embodiment, a display device includes first and second substrates, a liquid crystal layer, a polarizing element, a light source, and a bending member. The first substrate includes first and second surfaces and a side surface. The second substrate includes third and fourth surfaces. The polarizing element is provided on the fourth surface side of the second substrate. The light source irradiates the side surface with polarized parallel light. The bending member bends a path of the light entering the first substrate from the light source such that the light goes to the second substrate. No polarizing element is provided between the first substrate and the light source, and the bending member is provided on the second surface side of the first substrate.

公开(公告)号：US20230375776A1

公开(公告)日：2023-11-23

申请号：US18364564

申请日：2023-08-03

Applicant: Japan Display Inc.

Inventor： Hiroaki KIJIMA ,  Shinichi KOMURA ,  Ken ONODA ,  Koichi OKUDA

IPC: F21V8/00

CPC classification number: G02B6/0078 ,  G02B6/0068 ,  G02B6/0088 ,  G02B6/0036 ,  F21V2200/20

Abstract: According to one embodiment, an illumination device includes first and second light guides, first and second light sources, and first and second layers. The first light guide includes first and second main surfaces and first and second side surfaces. The second light guide includes third and fourth main surfaces and third and fourth side surfaces. The first light sources face a second side surface. The second light sources face the third side surface. The first layer includes first prisms in the second main surface. The second layer includes second prisms in the fourth main surface. The second and fourth side surfaces are displaced from each other in a first direction.