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：US20240402410A1

公开(公告)日：2024-12-05

申请号：US18731537

申请日：2024-06-03

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Toshiharu MATSUSHIMA ,  Koichi OKUDA

IPC: F21V8/00 ,  G06F1/16

Abstract: According to one embodiment, an illumination device includes light sources, a distributing light guide element and a light guide. The distributing light guide element has a first side surface, a second side surface and light waveguides extending from the first side surface towards the second side surface. The light guide has a third side surface and a first main surface. Each of the light waveguides have a first end portion into which light emitted from a corresponding light source enters, and a second end portion from which the light propagating in the light waveguide is emitted. The light emitted from the second end portion enters the light guide via the second side surface and the third side surface and is emitted from the first main surface.

公开(公告)号：US20240248349A1

公开(公告)日：2024-07-25

申请号：US18414567

申请日：2024-01-17

Applicant: Japan Display Inc.

Inventor： Koichi OKUDA ,  Shinichi KOMURA

IPC: G02F1/13357 ,  G02F1/13363 ,  G06F3/01

CPC classification number: G02F1/133615 ,  G02F1/13363 ,  G06F3/011

Abstract: A display device includes a display panel, a lighting device configured to illuminate the display panel, an optical element configured to collect light transmitted through the display panel to user's eyes, and a drive circuit configured to drive the display panel based on an image signal having information on an image. The lighting device comprises a plurality of light-emitting elements emitting light having colors different from each other, and the drive circuit generates a plurality of color resolved images obtained by resolving the image for each color of the light, based on the image signal, adjusts sizes of the color resolved images based on the colors of the light, and displays the color resolved images on the display panel.

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.

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：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：US20240192424A1

公开(公告)日：2024-06-13

申请号：US18537215

申请日：2023-12-12

Applicant: Japan Display Inc.

Inventor： Koichi OKUDA ,  Shinichi KOMURA ,  Hiroaki KIJIMA ,  Jin HIROSAWA ,  Yasuhiro TAKAHASHI

IPC: F21V8/00

CPC classification number: G02B6/0023 ,  G02B6/0045 ,  G02B6/0066

Abstract: A display device includes a display panel, and a lighting device configured to illuminate the display panel. The lighting device includes a light-guiding plate, a light-emitting element configured to emit a red laser beam toward a side surface of the light-guiding plate, and a phase difference plate placed between the side surface of the light-guiding plate and the light-emitting element.

公开(公告)号：US20240012249A1

公开(公告)日：2024-01-11

申请号：US18348436

申请日：2023-07-07

Applicant: Japan Display Inc.

Inventor： Hiroaki KIJIMA ,  Yasuhiro TAKAHASHI ,  Shinichi KOMURA ,  Koichi OKUDA

IPC: G02B27/01 ,  G02B5/30 ,  G02F1/1335

CPC classification number: G02B27/0172 ,  G02B5/3083 ,  G02F1/133536 ,  G02B2027/0174 ,  G02F1/133541 ,  G02F1/133543

Abstract: According to one embodiment, a display device includes a display panel, a first retardation film that faces the display panel, a holographic optical element that is bonded to the first retardation film, a second retardation film that is bonded to the holographic optical element, and a reflective polarizer that faces the second retardation film, reflects first linearly polarized light, and transmits second linearly polarized light that is orthogonal to the first linearly polarized light, wherein an air layer is interposed between the second retardation film and the reflective polarizer, a surface of the second retardation film facing the reflective polarizer is covered with an antireflective film.

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.