公开(公告)号：US12216304B2

公开(公告)日：2025-02-04

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

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：US11536885B2

公开(公告)日：2022-12-27

申请号：US17450479

申请日：2021-10-11

Applicant: Japan Display Inc.

Inventor： Shinichi Komura ,  Junji Kobashi ,  Koichi Okuda ,  Ken Onoda ,  Hiroaki Kijima

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/13363 ,  G02B5/30 ,  G02B30/34

Abstract: According to one embodiment, a display device includes a display panel configured to emit display light of linearly polarized light, a first semi-transparent element transmitting first circularly polarized light and reflecting second circularly polarized light, a first retardation film, a second semi-transparent element reflecting the first circularly polarized light and transmitting the second circularly polarized light, a second retardation film having a refractive anisotropy in which refractive indexes of directions orthogonal to each other in a plane are substantially equivalent to each other and a refractive index in a normal is different from a refractive index in a plane, and a first element having a lens action of condensing the second circularly polarized light.

公开(公告)号：US11500211B2

公开(公告)日：2022-11-15

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：US11927787B2

公开(公告)日：2024-03-12

申请号：US17987890

申请日：2022-11-16

Applicant: Japan Display Inc.

Inventor： Hiroaki Kijima ,  Shinichi Komura ,  Koichi Okuda ,  Ken Onoda

IPC: F21V8/00 ,  G02F1/13357

CPC classification number: G02B6/002 ,  G02B6/0021 ,  G02B6/0028 ,  G02B6/0068 ,  G02B6/0076 ,  G02B6/0091 ,  G02F1/133615

Abstract: According to one embodiment, an illumination device includes a first light guide having a first side surface, a second side surface located on a side opposite to the first side surface in a first direction, a first main surface, and a first opposed surface located on a side opposite to the first main surface in a second direction intersecting the first direction and a first light source opposed to the first side surface to emit first P-polarized light to the first side surface, the first side surface is inclined to the first main surface and the first opposed surface, the first light source is inclined to a first straight line perpendicular to the first side surface.

公开(公告)号：US11726253B2

公开(公告)日：2023-08-15

申请号：US17657400

申请日：2022-03-31

Applicant: Japan Display Inc.

Inventor： Shinichi Komura ,  Koichi Okuda ,  Ken Onoda ,  Hiroaki Kijima

IPC: F21V8/00

CPC classification number: G02B6/0045 ,  G02B6/0036 ,  G02B6/0046 ,  G02B6/0055 ,  G02B6/0091 ,  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：US11054569B2

公开(公告)日：2021-07-06

申请号：US16984393

申请日：2020-08-04

Applicant: Japan Display Inc.

Inventor： Hiroaki Kijima ,  Shinichi Komura ,  Yoichi Asakawa ,  Ken Onoda

IPC: F21V8/00

Abstract: According to one embodiment, the illumination device includes a first area, a second area, a first light guide, a plurality of first light sources, a second light guide, a plurality of second light sources, a first layer and a second layer. The first layer extends from the first area over a boundary between the first area and the second area, to between a second side surface of the first light guide and the boundary. The second layer extends from the second area over the boundary to between a third side surface of the second light guide and the boundary.

公开(公告)号：US10429664B2

公开(公告)日：2019-10-01

申请号：US15955852

申请日：2018-04-18

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa ,  Ken Onoda ,  Toshihiko Fukuma ,  Shinichi Komura

IPC: G02B27/48 ,  H01S5/042 ,  H01S5/00 ,  H01S5/40 ,  H01S5/30 ,  F21V8/00 ,  G02F1/1335

Abstract: According to one embodiment, a semiconductor laser includes a semiconductor laser element. A drive current which is composed of a direct current and an alternating current superposed thereon is applied to the semiconductor laser element. A waveform of the alternating current is a non-square wave. A frequency of the alternating current is from 50 Hz to 500 kHz.

公开(公告)号：US12038648B2

公开(公告)日：2024-07-16

申请号：US18342841

申请日：2023-06-28

Applicant: Japan Display Inc.

Inventor： Masafumi Okada ,  Shinichi Komura ,  Ken Onoda

IPC: G02F1/13357 ,  G02F1/1335

CPC classification number: G02F1/133621 ,  G02F1/133609 ,  G02F1/133613 ,  G02F1/133603

Abstract: According to one embodiment, an illumination device includes red light emitting elements, green light emitting elements and blue light emitting elements opposing a first side surface of a first light guide, and the red light emitting elements, the green light emitting elements and the blue light emitting elements are disposed along the first side surface in a third direction that intersects the first direction and the second direction, and, arranged to be symmetrical with respect to a central axis of the third direction of the first side surface.

公开(公告)号：US12025827B2

公开(公告)日：2024-07-02

申请号：US18336054

申请日：2023-06-16

Applicant: Japan Display Inc.

Inventor： Koji Fujisawa ,  Ken Kagabu ,  Hiroaki Kijima ,  Ken Onoda

IPC: F21V8/00

CPC classification number: G02B6/0076 ,  G02B6/0053 ,  G02B6/0055

Abstract: According to one embodiment, an illumination device includes a first light guide, a second light guide and a plurality of light sources. The first light guide includes a first main surface, a second main surface facing the first main surface, and a first side surface connected to the second light guide. The first side surface further includes a first connection surface and a second connection surface. The first connection surface extends from an end portion of the first main surface to the second main surface and obliquely extends so as to move away from the second side surface. The second connection surface perpendicularly extends from an end portion of the first connection surface to an end portion of the second main surface.

公开(公告)号：US11870211B2

公开(公告)日：2024-01-09

申请号：US17657379

申请日：2022-03-31

Applicant: Japan Display Inc.

Inventor： Shinichi Komura ,  Koichi Okuda ,  Ken Onoda ,  Hiroaki Kijima

IPC: H01S5/00 ,  F21V8/00 ,  H01S5/40

CPC classification number: H01S5/0071 ,  G02B6/002 ,  G02B6/0031 ,  G02B6/0068 ,  H01S5/4093

Abstract: According to one embodiment, an illumination device includes a light guide having a first plane, a second plane, a side plane, a first tilted plane, and a second tilted plane, an angle formed between the side plane and the first tilted plane and an angle formed between the side plane and the second tilted plane being acute angles, a first semiconductor laser element including a first light emitting part, and a second semiconductor laser element including a second light emitting part. The first light emitting part is opposed to a first intersection part of the side plane and the first tilted plane, and the second light emitting part is opposed to a second intersection part of the side plane and the second tilted plane.