公开(公告)号：US10222649B2

公开(公告)日：2019-03-05

申请号：US15823876

申请日：2017-11-28

Applicant: Japan Display Inc.

Inventor： Ken Sugiyama ,  Koji Hiramoto ,  Taketoshi Masamoto ,  Kazunari Nishita

IPC: G09F13/04 ,  G02F1/1335

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.

公开(公告)号：US20190018284A1

公开(公告)日：2019-01-17

申请号：US16032378

申请日：2018-07-11

Applicant: Japan Display Inc.

Inventor： Taketoshi Masamoto ,  Tetsuro Ochi

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/1333 ,  G02F1/133

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

公开(公告)号：US20200348567A1

公开(公告)日：2020-11-05

申请号：US16934253

申请日：2020-07-21

Applicant: Japan Display Inc.

Inventor： Taketoshi Masamoto ,  Tetsuro Ochi

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/133

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

公开(公告)号：US10754192B2

公开(公告)日：2020-08-25

申请号：US16032378

申请日：2018-07-11

Applicant: Japan Display Inc.

Inventor： Taketoshi Masamoto ,  Tetsuro Ochi

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/133

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

公开(公告)号：US11036084B2

公开(公告)日：2021-06-15

申请号：US16934253

申请日：2020-07-21

Applicant: Japan Display Inc.

Inventor： Taketoshi Masamoto ,  Tetsuro Ochi

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/1333

Abstract: According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.

公开(公告)号：US10416487B2

公开(公告)日：2019-09-17

申请号：US16034486

申请日：2018-07-13

Applicant: Japan Display Inc.

Inventor： Taketoshi Masamoto ,  Kosuke Matsubara

IPC: F21V7/04 ,  G02F1/1333 ,  F21V8/00

Abstract: According to one embodiment, an illumination device includes a light guide, a light source device and an optical sheet. The light guide has an emission surface and side surfaces which intersect the emission surface, and at least one side surface is located inside a display area. The light source device emits light to the light guide. The optical sheet is provided on the emission surface and is opposed to the display area. The optical sheet has an edge portion which covers an area between the one side surface and an edge of the display area, and a transmittance adjustment area which is provided in the edge portion and reduces a transmittance of the edge portion.

公开(公告)号：US10578917B2

公开(公告)日：2020-03-03

申请号：US16240281

申请日：2019-01-04

Applicant: Japan Display Inc.

Inventor： Ken Sugiyama ,  Koji Hiramoto ,  Taketoshi Masamoto ,  Kazunari Nishita

IPC: G09F13/08 ,  G02F1/1335 ,  G02F1/1333

Abstract: According to one embodiment, a backlight device includes a support frame including a first frame body including a pair of first frame members and a second frame member connected to respective ends of the first frame members and a second frame body being separate from the first frame body, which connects other respective ends of the first frame members to each other, a reflective sheet on the support frame, a light guide on the reflective sheet within the support frame, an optical sheet on the light guide, and a light source unit in the support frame. The light source unit includes a wiring board on the second frame body and a light source on the wiring board, opposing an incidence surface of the light guide.