公开(公告)号：US20230280520A1

公开(公告)日：2023-09-07

申请号：US18314149

申请日：2023-05-09

Applicant: Japan Display Inc.

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

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0076 ,  G02B6/0068

Abstract: According to one embodiment, a display device includes a display panel, a first light guide, and a second light guide. In the first light guide, a first main surface includes a first plane and first grooves between the first plane and a first side surface, a second main surface includes second grooves orthogonal to the first grooves, and a second plane between the second grooves and the first side surface. In the second light guide, a third main surface includes a third plane and third grooves located between the third plane and a fourth side surface, a fourth main surface includes fourth grooves orthogonal to the third grooves, and a fourth plane located between the fourth grooves and the fourth side surface.

公开(公告)号：US20230010210A1

公开(公告)日：2023-01-12

申请号：US17858235

申请日：2022-07-06

Applicant: Japan Display Inc.

Inventor： Koji FUJISAWA ,  Ken KAGABU ,  Hiroaki KIJIMA ,  Ken ONODA

IPC: F21V8/00

Abstract: According to one embodiment, an illumination device, in which a plurality of light guides include a plurality of light guide pairs, each of the plurality of light guide pairs includes a first light guide and a second light guide, the plurality of light guide pairs are connected with their long sides opposed to each other, a plurality of laser light source elements include a plurality of first light source elements arranged to be opposed to a first side surface on a short side of the first light guide of the light guide pair, and a plurality of second light source elements arranged to be opposed to a second side surface of the second light guide of the light guide pair.

公开(公告)号：US20220317360A1

公开(公告)日：2022-10-06

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

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：US20220113460A1

公开(公告)日：2022-04-14

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: G02B5/30

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：US20210041620A1

公开(公告)日：2021-02-11

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：US20240045133A1

公开(公告)日：2024-02-08

申请号：US18490401

申请日：2023-10-19

Applicant: Japan Display Inc.

Inventor： Koji FUJISAWA ,  Ken KAGABU ,  Hiroaki KIJIMA ,  Ken ONODA

IPC: F21V8/00

CPC classification number: G02B6/0076 ,  G02B6/0035 ,  G02B6/00

Abstract: According to one embodiment, an illumination device, in which a plurality of light guides include a plurality of light guide pairs, each of the plurality of light guide pairs includes a first light guide and a second light guide, the plurality of light guide pairs are connected with their long sides opposed to each other, a plurality of laser light source elements include a plurality of first light source elements arranged to be opposed to a first side surface on a short side of the first light guide of the light guide pair, and a plurality of second light source elements arranged to be opposed to a second side surface of the second light guide of the light guide pair.

公开(公告)号：US20230125438A1

公开(公告)日：2023-04-27

申请号：US17970578

申请日：2022-10-21

Applicant: Japan Display Inc.

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

IPC: F21V8/00

Abstract: According to one embodiment, a display device includes a display panel, a first light guide, and a second light guide. In the first light guide, a first main surface includes a first plane and first grooves between the first plane and a first side surface, a second main surface includes second grooves orthogonal to the first grooves, and a second plane between the second grooves and the first side surface. In the second light guide, a third main surface includes a third plane and third grooves located between the third plane and a fourth side surface, a fourth main surface includes fourth grooves orthogonal to the third grooves, and a fourth plane located between the fourth grooves and the fourth side surface.

公开(公告)号：US20220382111A1

公开(公告)日：2022-12-01

申请号：US17664076

申请日：2022-05-19

Applicant: Japan Display Inc.

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

IPC: G02F1/1343 ,  G02F1/13357 ,  F21V8/00

Abstract: According to one embodiment, a liquid crystal display device includes a display panel including a red sub-pixel, a green sub-pixel and a blue sub-pixel and an illumination device including a red light-emitting element, a green light-emitting element and a blue light emitting element and irradiating a mixture of light emitted by the light emitting elements onto the display panel. Further, of the red sub-pixel, the green sub-pixel and the blue sub-pixel, an aperture area of a sub-pixel having a lowest wall plug efficiency of the light emitting element of a respective color is greater than aperture areas of the sub-pixels of other colors.

公开(公告)号：US20180329224A1

公开(公告)日：2018-11-15

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 ,  G02F1/1335

CPC classification number: G02B27/48 ,  G02B6/003 ,  G02B6/0046 ,  G02B6/0053 ,  G02B6/0068 ,  G02F1/133514 ,  G02F1/133621 ,  H01S5/0078 ,  H01S5/0428 ,  H01S5/3013 ,  H01S5/3018 ,  H01S5/32325 ,  H01S5/34333 ,  H01S5/347 ,  H01S5/4012 ,  H01S5/4093 ,  H01S2301/02

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：US20170357041A1

公开(公告)日：2017-12-14

申请号：US15617568

申请日：2017-06-08

Applicant: Japan Display Inc.

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

IPC: F21V8/00

CPC classification number: G02B6/002 ,  G02B6/0031 ,  G02B6/0038 ,  G02B6/0068

Abstract: In one embodiment, an illumination device comprises a light source, a light guide having an incidence surface, and a light refraction structure on the surface. The light guide has an irradiation direction, a thickness direction, and a width direction. The light guide has a first surface in the thickness direction and a second surface in the width direction. A first length in the width direction is greater than a second length in the thickness direction, in the structure. The light from the light source having passed through the structure is reflected on the first surface in the thickness direction and passes through the second surface in the width direction.