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.

公开(公告)号：US20180031751A1

公开(公告)日：2018-02-01

申请号：US15658095

申请日：2017-07-24

Applicant: Japan Display Inc.

Inventor： Ken Sugiyama

IPC: F21V8/00 ,  H01L33/58 ,  H05K1/02 ,  H01L25/075 ,  H05K1/18 ,  H01L33/48 ,  H01L33/62

CPC classification number: G02B6/009 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0083 ,  G02F1/1333 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/58 ,  H01L33/62 ,  H05K1/0274 ,  H05K1/147 ,  H05K1/181 ,  H05K2201/10106 ,  H05K2201/10136 ,  H05K2201/10681

Abstract: According to one embodiment, a light source device includes a light-emitting chip, and a case in which the light-emitting chip is accommodated. The case includes a light-emitting surface which transmits light from the light-emitting chip, and a plurality of sidewalls extending so as to intersect the light-emitting surface. At least a part of the sidewalls is colored or painted in black.

公开(公告)号：US11852918B2

公开(公告)日：2023-12-26

申请号：US18068206

申请日：2022-12-19

Applicant: Japan Display Inc.

Inventor： Rina Yamamoto ,  Ken Sugiyama

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

CPC classification number: G02F1/133603 ,  G02F1/133607

Abstract: Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.

公开(公告)号：US11768325B2

公开(公告)日：2023-09-26

申请号：US17742653

申请日：2022-05-12

Applicant: Japan Display Inc.

Inventor： Koji Hiramoto ,  Masafumi Okada ,  Hiroshi Nakamoto ,  Ken Kagabu ,  Ken Sugiyama

IPC: F21V8/00 ,  G02F1/13357

CPC classification number: G02B6/0045 ,  G02B6/0021 ,  G02B6/0066 ,  G02B6/0073 ,  G02F1/133603

Abstract: Display device is provided and includes display panel; and illumination device provided on rear surface side of display panel, wherein illumination device includes light sources, and light guiding member arranged at rear surface side of display panel, light guiding member has holes which penetrates the light guiding member, light sources are housed in corresponding hole, rear surface of light guiding member has first inclined surface inclined upwardly from light source housed in one of holes, front surface side of light guiding member has second inclined surface inclined upwardly from light source housed in one of the holes, and angle of first inclined surface to center line of one of holes is greater than angle of second inclined surface to center line.

公开(公告)号：US11333818B2

公开(公告)日：2022-05-17

申请号：US17357145

申请日：2021-06-24

Applicant: Japan Display Inc.

Inventor： Koji Hiramoto ,  Masafumi Okada ,  Hiroshi Nakamoto ,  Ken Kagabu ,  Ken Sugiyama

IPC: F21V8/00 ,  G02F1/13357

Abstract: According to an aspect, a display device includes: a display panel configured to transmit light; and an illumination device provided on a rear surface side of the display panel. The illumination device includes a plurality of light sources configured to emit light, and a light guiding member that has translucency and is arranged between the light sources on the rear surface side of the display panel. The light guiding member has a plurality of holes each of which opens in a first direction intersecting with a rear surface of the display panel and in each of which a corresponding one of the light sources is disposed, and a light guiding portion surrounding the holes. A rear surface of the light guiding portion is provided with a first inclined surface inclined with respect to the first direction and a plane orthogonal to the first direction.

公开(公告)号：US11112632B2

公开(公告)日：2021-09-07

申请号：US16793122

申请日：2020-02-18

Applicant: Japan Display Inc.

Inventor： Tetsuro Ochi ,  Ken Sugiyama ,  Toshiyuki Tsubota ,  Kazunari Nishita

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

Abstract: A backlight device is provided and includes a frame formed of a sheet material; a first adhesive layer provided on one surface of the frame; a reflective sheet attached to the frame with the first adhesive layer; an optical member disposed on the reflective sheet in the frame; and a light source disposed in the frame and configured to emit light to the optical member, wherein in at least a part of the frame, a width of the frame and a width of the first adhesive layer are equal to each other, and at least an internal surface of the frame and an internal surface of the first adhesive layer are flush with each other.

公开(公告)号：US10551556B2

公开(公告)日：2020-02-04

申请号：US16385604

申请日：2019-04-16

Applicant: Japan Display Inc.

Inventor： Ken Sugiyama

IPC: F21V8/00 ,  H01L33/48 ,  H01L33/58 ,  H01L33/62 ,  H05K1/14 ,  H05K1/02 ,  H05K1/18 ,  H01L25/075 ,  G02F1/1333

Abstract: According to one embodiment, a light source device includes a light-emitting chip, and a case in which the light-emitting chip is accommodated. The case includes a light-emitting surface which transmits light from the light-emitting chip, and a plurality of sidewalls extending so as to intersect the light-emitting surface. At least a part of the sidewalls is colored or painted in black.

公开(公告)号：US10408994B2

公开(公告)日：2019-09-10

申请号：US15494807

申请日：2017-04-24

Applicant: Japan Display Inc.

Inventor： Kazunari Nishita ,  Ken Sugiyama ,  Tetsuro Ochi ,  Toshiyuki Tsubota

IPC: G02F1/1335 ,  F21V8/00

Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.

公开(公告)号：US20180224595A1

公开(公告)日：2018-08-09

申请号：US15889048

申请日：2018-02-05

Applicant: Japan Display Inc.

Inventor： Ken Sugiyama ,  Koji Hiramoto ,  Kazunari Nishita

IPC: F21V8/00

Abstract: According to one embodiment, a backlight device includes a case including a bottom plate formed from a metal plate, a plurality of side plates formed of metal plates along side edges of the bottom plate and a plurality of resin members each embedded into a gap between each adjacent pair of the side plates to form a corner portion, a light guide in the case, an optical sheet on the light guide, and a light source unit in the case, configured to emit light to enter the light guide.

公开(公告)号：US11573453B2

公开(公告)日：2023-02-07

申请号：US17449822

申请日：2021-10-04

Applicant: Japan Display Inc.

Inventor： Rina Yamamoto ,  Ken Sugiyama

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

Abstract: Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.