公开(公告)号：US10429664B2

公开(公告)日：2019-10-01

申请号：US15955852

申请日：2018-04-18

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa ,  Ken Onoda ,  Toshihiko Fukuma ,  Shinichi Komura

IPC: G02B27/48 ,  H01S5/042 ,  H01S5/00 ,  H01S5/40 ,  H01S5/30 ,  F21V8/00 ,  G02F1/1335

Abstract: According to one embodiment, a semiconductor laser includes a semiconductor laser element. A drive current which is composed of a direct current and an alternating current superposed thereon is applied to the semiconductor laser element. A waveform of the alternating current is a non-square wave. A frequency of the alternating current is from 50 Hz to 500 kHz.

公开(公告)号：US09964688B2

公开(公告)日：2018-05-08

申请号：US15349542

申请日：2016-11-11

Applicant: Japan Display Inc.

Inventor： Shinichi Komura ,  Toshihiko Fukuma ,  Youichi Asakawa ,  Ken Onoda

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02B6/0056 ,  G02B6/005 ,  G02B6/0051 ,  G02B6/0055 ,  G02F1/133615 ,  G02F1/133617 ,  G02F1/13362 ,  G02F2001/133614 ,  G02F2201/123 ,  G02F2202/36

Abstract: According to one embodiment, a display device includes a light source unit, a light guide unit, a lens, and a light emitting layer. The light source unit emits light to the light guide unit. The lens concentrates the light emitted from the light source unit. The light guide unit guides the light concentrated by the lens toward the light emitting layer. The light guided by the light guide unit is transmitted to the light emission layer without any intervening prism layer.

公开(公告)号：US09910205B2

公开(公告)日：2018-03-06

申请号：US15363055

申请日：2016-11-29

Applicant: Japan Display Inc.

Inventor： Ken Onoda ,  Shinichi Komura ,  Youichi Asakawa ,  Toshihiko Fukuma

IPC: F21V8/00 ,  G02F1/1335

CPC classification number: G02B6/0031 ,  G02B6/0023 ,  G02B6/0028 ,  G02B6/003 ,  G02B6/0038 ,  G02B6/0056 ,  G02B6/0068 ,  G02F1/133504 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/13362 ,  G02F2001/133562

Abstract: In one embodiment, a light-emitting device includes a light source unit which emits polarized light in a first direction, a bending portion which is irradiated with the polarized light in the first direction and bends the light in a second direction, and a lightguide member which is irradiated with the polarized light caused to bend in the bending portion. The lightguide member comprises an exit surface, bends the polarized light in a third direction, and emits the light through the exit surface. The light source unit includes a first source which emits first light, and a second source which emits second light. The bending portion includes a first incident portion which the first light enters, and a second incident portion which the second light enters.

公开(公告)号：US10551550B2

公开(公告)日：2020-02-04

申请号：US15700606

申请日：2017-09-11

Applicant: Japan Display Inc.

Inventor： Toshihiko Fukuma ,  Shinichi Komura ,  Youichi Asakawa ,  Ken Onoda

IPC: F21V8/00

Abstract: In one embodiment, an illumination device includes a light guide, a light source and prisms. The light guide has a side surface and first and second main surfaces. The light source emits light to the side surface in a first emission direction. The prisms are provided on the second main surface. The second main surface has first and second areas. The prisms include first prisms in the first area and second prisms in the second area. A first virtual line connecting apexes of the first prisms is inclined with respect to the first main surface. A distance between the second area and the first main surface is greater than a distance between the first area and the first main surface.

公开(公告)号：US10073207B2

公开(公告)日：2018-09-11

申请号：US15371380

申请日：2016-12-07

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa ,  Toshihiko Fukuma ,  Ken Onoda ,  Shinichi Komura

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/1333 ,  G02F1/13363 ,  G02F1/1343

CPC classification number: G02B6/0025 ,  G02B6/003 ,  G02B6/0036 ,  G02B6/0041 ,  G02B6/0043 ,  G02B6/0068 ,  G02F1/133308 ,  G02F1/133345 ,  G02F1/133502 ,  G02F1/133504 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/133553 ,  G02F1/133615 ,  G02F1/133617 ,  G02F1/13362 ,  G02F1/13363 ,  G02F1/134309 ,  G02F2001/133314 ,  G02F2001/13332 ,  G02F2001/133519 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2001/133618 ,  G02F2001/133638 ,  G02F2001/134345 ,  G02F2201/121 ,  G02F2201/123 ,  G02F2202/28 ,  G02F2202/36 ,  G02F2203/01 ,  G02F2203/055 ,  G02F2203/09

Abstract: In one embodiment, a display device includes first and second substrates, a liquid crystal layer, a polarizing element, a light source, and a bending member. The first substrate includes first and second surfaces and a side surface. The second substrate includes third and fourth surfaces. The polarizing element is provided on the fourth surface side of the second substrate. The light source irradiates the side surface with polarized parallel light. The bending member bends a path of the light entering the first substrate from the light source such that the light goes to the second substrate. No polarizing element is provided between the first substrate and the light source, and the bending member is provided on the second surface side of the first substrate.

公开(公告)号：US09735221B2

公开(公告)日：2017-08-15

申请号：US15006481

申请日：2016-01-26

Applicant: Japan Display Inc.

Inventor： Toshihiko Fukuma ,  Norio Oku

IPC: H01L29/88 ,  H01L27/32 ,  H01L25/16 ,  H05K1/14

CPC classification number: H01L27/3276 ,  H01L25/167 ,  H01L27/323 ,  H01L2251/5338 ,  H01L2924/0002 ,  H05K1/147 ,  H05K2201/041 ,  H05K2201/09063 ,  H05K2201/10128 ,  H01L2924/00

Abstract: The display module includes first and second FPC substrates disposed on top of each other. The first substrate has an IC mounted on it. The second FPC substrate has a cutout inside which the IC is disposed.

公开(公告)号：US10437104B2

公开(公告)日：2019-10-08

申请号：US15730076

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Ken Onoda ,  Shinichi Komura ,  Youichi Asakawa ,  Toshihiko Fukuma

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/01

Abstract: According to one embodiment, an illumination device includes a first member, a second member, a first light source. The first member includes a first prism array including first prisms aligned in a first direction. The second member includes a second prism array including second prisms aligned in a second direction. The second member disposed more closely to a first A side than to the first member. The first light source disposed more closely to a second A side than to the second member to apply a parallel light beam to a second B side. The parallel light beam from the first light source is made incident on the second prism array and incident on the first prism array without passing through a light guide.

公开(公告)号：US10324335B2

公开(公告)日：2019-06-18

申请号：US15442185

申请日：2017-02-24

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa ,  Toshihiko Fukuma ,  Ken Onoda ,  Shinichi Komura

IPC: G02F1/1335 ,  G02F1/13363

Abstract: According to one embodiment, a display device includes a display panel including a first substrate, a second substrate, and an optical element layer provided between the substrates, a light directing unit facing the first substrate of the display panel, and including a first main surface disposed on a side facing the first substrate, and a second main surface disposed on a side reverse to the first main surface, and a light source unit disposed on the first substrate side with respect to the display panel, and emitting polarized light toward the first or second main surface. The polarized light is made incident on the first or second main surface, and directed perpendicularly to the optical element layer.

公开(公告)号：US10209426B2

公开(公告)日：2019-02-19

申请号：US15459275

申请日：2017-03-15

Applicant: Japan Display Inc.

Inventor： Toshihiko Fukuma ,  Shinichi Komura ,  Youichi Asakawa ,  Ken Onoda

IPC: F21V8/00

Abstract: According to one embodiment, a backlight unit includes a light source, a first lens, a second lens, and a light guide unit. The light source emits light which is diffused as the light travels in a first-A direction, the light being diffused in a second direction intersecting the first-A direction, and a third direction intersecting the first-A direction and the second direction. The first lens and the second lens are arranged in an optical path of the light. The first and second lenses control the light such that the first lens controls a beam width of the light in the second direction, and the second lens controls a beam width of the light in the third direction, thereby converting the light into parallel light.

公开(公告)号：US09733673B2

公开(公告)日：2017-08-15

申请号：US15006728

申请日：2016-01-26

Applicant: Japan Display Inc.

Inventor： Toshihiko Fukuma ,  Norio Oku

IPC: G06F3/041 ,  G06F1/16

CPC classification number: G06F1/1652 ,  G06F1/1643 ,  G06F2203/04102

Abstract: A display module includes an image display panel, a touch screen, a first FPC substrate, and a second FPC substrate. The first and second FPC substrates are disposed so as not to overlap with each other. The image display panel has a first curved portion in its first peripheral area. The touch screen has a second curved portion in its second peripheral area. The first and second FPC substrates each extend toward the opposite side of the image display panel from the touch screen.