公开(公告)号：US12032247B2

公开(公告)日：2024-07-09

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 ,  F21V8/00 ,  G02F1/13357

CPC classification number: G02F1/134345 ,  G02B6/0055 ,  G02B6/0068 ,  G02F1/133621 ,  G02F2201/52

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：US11194090B2

公开(公告)日：2021-12-07

申请号：US17009959

申请日：2020-09-02

Applicant: Japan Display Inc.

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

IPC: F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  H01S5/40

Abstract: According to one embodiment, a display device displays a color gamut defined by connecting a first defined color in first chromaticity coordinates, a second defined color in second chromaticity coordinates, and a third defined color in third chromaticity coordinates. An illumination device of the display device includes green, blue and red lasers. The green and blue lasers emit light of the second and third defined colors, and red laser emits light of a color in fourth chromaticity coordinates. Each of the pixels displays a color including the first defined color by mixing light in the fourth chromaticity coordinates and the second defined color.

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：US12105316B2

公开(公告)日：2024-10-01

申请号：US18542788

申请日：2023-12-18

Applicant: Japan Display Inc.

Inventor： Yuji Maede ,  Shinichi Komura ,  Hiroaki Kijima

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0036 ,  G02B6/0068

Abstract: According to one embodiment, an illumination device comprises a light guide, a light source, a reflective layer, a first prism and a second prism, wherein the light guide has a thickness in a second direction increasing toward a second side surface, the first prism and the second prism have cross-sectional shapes being formed in a triangle shape, a first height of the first prism in the second direction is smaller than a second height of the second prism in the second direction.

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.

公开(公告)号：US11693171B2

公开(公告)日：2023-07-04

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

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

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：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.