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：US10571735B2

公开(公告)日：2020-02-25

申请号：US15342680

申请日：2016-11-03

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa

IPC: G02F1/1335 ,  F21V8/00

Abstract: According to one embodiment, a display device includes a light source unit and a color filter unit. The light source unit includes a laser light source unit including a red laser light source, a green laser light source and a blue laser light source. The color filter unit includes a red filter film, a green filter film and a blue filter film. The difference between the center emission wavelength of the green laser beam and that of the blue laser beam falls within the range of 65 to 95 nm. In the green filter film, the difference between a wavelength at a maximum light transmittance and a wavelength at a light transmittance of 10% on the shorter wavelength side is 70 nm or less.

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：US09599858B2

公开(公告)日：2017-03-21

申请号：US14108592

申请日：2013-12-17

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa

IPC: G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/1337 ,  G02F1/134309 ,  G02F1/134363 ,  G02F2001/133738 ,  G02F2001/134372

Abstract: According to one embodiment, a liquid crystal display device includes an array substrate including a common electrode, an insulation film disposed on the common electrode, and a pixel electrode disposed on the insulation film, opposed to the common electrode and provided with a slit, a counter-substrate disposed to be opposed to the array substrate, and a liquid crystal layer formed of a negative-type liquid crystal material held between the array substrate and the counter-substrate, wherein the liquid crystal layer includes liquid crystal molecules which are initially aligned at an angle of 10° to 45° to a direction which is perpendicular to a direction of extension of the slit.

公开(公告)号：US11016356B2

公开(公告)日：2021-05-25

申请号：US17012403

申请日：2020-09-04

Applicant: Japan Display Inc.

Inventor： Shinichi Komura ,  Youichi Asakawa

IPC: G02F1/139 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363

Abstract: According to one embodiment, a display device comprises a color filter layer, an illumination device and a selection layer. The illumination device illuminates the color filter layer with mixed light including first and second components. The color filter layer includes first and second filters. The selection layer includes a phase element layer including first and second phase elements, and first and second polarizers. The first phase element changes a polarization state of the mixed color light such that the first component is transmitted through the second polarizer. The second phase element changes a polarization state of the mixed color light such that the second component is transmitted through the second polarizer.

公开(公告)号：US10317761B2

公开(公告)日：2019-06-11

申请号：US15172829

申请日：2016-06-03

Applicant: Japan Display Inc.

Inventor： Yukio Tanaka ,  Daiichi Suzuki ,  Takashi Nakamura ,  Masahiro Tada ,  Youichi Asakawa

IPC: G02F1/1368 ,  G02F1/1362 ,  H01L27/12 ,  H01L29/417 ,  H01L29/786

Abstract: A liquid crystal display device according to an aspect of the invention includes a display region having a plurality of sub pixels. The sub pixels each include a pixel electrode and a thin film transistor electrically coupled to the pixel electrode. A transient leak current of each thin film transistor included in the sub pixels at both ends of the display region among the sub pixels provided on a line passing through the center of the display region in plan view is smaller than a transient leak current of each thin film transistor included in the sub pixels in a central portion including the center.

公开(公告)号：US09541810B2

公开(公告)日：2017-01-10

申请号：US13922413

申请日：2013-06-20

Applicant: Japan Display Inc.

Inventor： Youichi Asakawa

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/133 ,  G02F1/1337

CPC classification number: G02F1/136286 ,  G02F1/13306 ,  G02F1/133707 ,  G02F1/134363

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a common electrode, a pixel electrode which includes an electrode portion which forms a slit opposed to the common electrode, a second substrate, and a liquid crystal layer formed of a liquid crystal material having a negative dielectric constant anisotropy. The slit and the electrode portion are arranged in the first direction and extend in the second direction. L/S is in a range of between 0.5 and 0.9 when a width of the slit in the first direction is S and a width of the electrode portion in the first direction is L.

Abstract translation: 根据一个实施例，液晶显示装置包括：第一基板，包括公共电极;像素电极，其包括形成与公共电极相对的狭缝的电极部分;第二基板;以及由液体形成的液晶层 具有负介电常数各向异性的晶体材料。 狭缝和电极部分沿第一方向布置并沿第二方向延伸。 当第一方向的狭缝的宽度为S且电极部分在第一方向上的宽度为L时，L / S在0.5至0.9的范围内。

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：US20180074252A1

公开(公告)日：2018-03-15

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

CPC classification number: G02B6/0053 ,  G02B6/002 ,  G02B6/0038 ,  G02B6/0046 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0068

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.