公开(公告)号：US20240418925A1

公开(公告)日：2024-12-19

申请号：US18679541

申请日：2024-05-31

Applicant: Japan Display Inc.

Inventor： Takashi OTA ,  Nobuyuki SUZUKI ,  Shinichi KOMURA ,  Hiroaki KIJIMA ,  Koichi OKUDA

IPC: F21V8/00 ,  G02F1/13357

Abstract: A backlight includes: a light guide plate including a front surface and a back surface, the light guide plate including an end face that connects one edge of the front surface and one edge of the back surface, at least part of the end face being inclined at an angle other than a right angle relative to the front surface; and a light source that emits light, the light source being set in an arrangement enabling emission of the light parallel to the front surface towards the at least part of the end face of the light guide plate, wherein the light is incident on and refracted at the at least part of the end face, propagates inside a material of the light guide plate, is reflected off the back surface, and is surface-emitted from the front surface.

公开(公告)号：US20240249694A1

公开(公告)日：2024-07-25

申请号：US18414631

申请日：2024-01-17

Applicant: Japan Display Inc.

Inventor： Koichi OKUDA ,  Shinichi KOMURA

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G2320/02

Abstract: A display device includes a display panel, an optical element configured to collect light emitted from 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 drive circuit generates a corrected image obtained by applying correction to the image to cause distortion, based on distortion caused by the optical element, and displays the corrected image on the display panel.

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：US20230185007A1

公开(公告)日：2023-06-15

申请号：US18073566

申请日：2022-12-02

Applicant: Japan Display Inc.

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

IPC: G02B5/30 ,  G02B3/02

CPC classification number: G02B5/3016 ,  G02B3/02

Abstract: According to one embodiment, a lens portion includes a first lens element converging while converting first circularly polarized light into second circularly polarized light and a second lens element converging while converting the second circularly polarized light into the first circularly polarized light. Each of the first lens element and the second lens element includes first liquid crystal molecules, and the alignment direction of the first liquid crystal molecules of the first lens element is line symmetry with the alignment direction of the first liquid crystal molecules of the second lens element.

公开(公告)号：US20230152630A1

公开(公告)日：2023-05-18

申请号：US17987890

申请日：2022-11-16

Applicant: Japan Display Inc.

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

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

CPC classification number: G02F1/133615 ,  G02F1/133504 ,  G02F1/13362 ,  G02F1/133524 ,  G02B6/0076 ,  G02B6/0028 ,  G02B6/0068 ,  G02B6/0021

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：US20220320818A1

公开(公告)日：2022-10-06

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

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：US20220113595A1

公开(公告)日：2022-04-14

申请号：US17450477

申请日：2021-10-11

Applicant: Japan Display Inc.

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

IPC: G02F1/13363 ,  G02F1/1335

Abstract: According to one embodiment, a display device including a display panel emitting display light of linearly polarized light, a semi-transparent layer, a first retardation film, a reflective polarizer transmitting first linearly polarized light and reflecting second linearly polarized light orthogonal to the first linearly polarized light, a second retardation film, an element, and a third retardation film arranged between the reflective polarizer and the element, wherein the first retardation film, the second retardation film, and the third retardation film are quarter-wave plates, and the element has a lens action of condensing first circularly polarized light.

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.