公开(公告)号：US11934072B2

公开(公告)日：2024-03-19

申请号：US18367123

申请日：2023-09-12

Applicant: JAPAN DISPLAY INC.

Inventor： Kojiro Ikeda ,  Takeo Koito ,  Koichi Nagao ,  Shinichiro Tanaka

IPC: G02F1/1343 ,  G02F1/1337

CPC classification number: G02F1/134381 ,  G02F1/133757 ,  G02F1/133788 ,  G02F1/134309

Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first strip electrode, a second strip electrode, a third strip electrode and a fourth strip electrode. The extension direction of the first strip electrode and the second strip electrode in the first liquid crystal cell is different from the extension direction of the first strip electrode and the second strip electrode in the second liquid crystal cell. The extension direction of the first strip electrode and the second strip electrode intersects with the extension direction of the third strip electrode and the fourth strip electrode at an angle other than 90°.

公开(公告)号：US11774786B2

公开(公告)日：2023-10-03

申请号：US17885694

申请日：2022-08-11

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/13 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1362

CPC classification number: G02F1/1323 ,  G02F1/133512 ,  G02F1/133528 ,  G02F1/134309 ,  G02F1/136209 ,  G02F1/1343 ,  G09G2320/068

Abstract: According to an aspect, a view-angle control device includes: a drive layer in which light-transmitting regions and switchable regions are alternately arranged in one direction, each light-transmitting region being configured to transmit light, each switchable region being switchable between a light-transmitting state and a light-blocking state through switching of liquid crystal orientation; and a plurality of optical member layers stacked together with the drive layer. Each optical member layer includes a base member that transmits light and a light-blocking part that is provided at a position overlapping with the switchable region and blocks light. The light-blocking part is disposed on a surface of the base member on a farther side from the drive layer.

公开(公告)号：US11719984B2

公开(公告)日：2023-08-08

申请号：US17870852

申请日：2022-07-22

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Tae Kurokawa ,  Masashi Mitsui

IPC: G02F1/1347 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/1347 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/13471 ,  G02F1/133345 ,  G02F1/133528

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell and a polarized light conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of an pair of substrates of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, a plurality of first electrodes arranged along one direction on the insulating substrate and formed in a strip shape, a first inorganic insulating film covering the first electrodes and a plurality of second electrodes intersecting the first electrodes on the first inorganic insulating film and formed in a strip shape.

公开(公告)号：US11655944B2

公开(公告)日：2023-05-23

申请号：US17569525

申请日：2022-01-06

Applicant: Japan Display Inc.

Inventor： Makoto Hasegawa ,  Takeo Koito ,  Nobuyuki Suzuki ,  Masafumi Okada

IPC: F21V11/06 ,  F21Y115/10 ,  F21K9/233 ,  F21K9/61 ,  F21V8/00 ,  F21V14/00 ,  F21V5/00

CPC classification number: F21K9/233 ,  F21K9/61 ,  F21V5/005 ,  F21V11/06 ,  F21V14/003 ,  G02B6/003 ,  G02B6/0053 ,  F21Y2115/10

Abstract: The purpose of the present invention is to realize a lighting device of small light distribution angle and less leakage light and further to realize a lighting device in which the light beam is easy to control. The following is an example of the structure to meet the above purpose. A lighting device including: a light guide; LEDs set at a side surface of the light guide; a prism sheet set on a major surface of the light guide, in which a first louver which extends in a first direction and, a second louver which extends in an orthogonal direction to the first direction are superposed on the prism sheet.

公开(公告)号：US11604378B2

公开(公告)日：2023-03-14

申请号：US17708524

申请日：2022-03-30

Applicant: Japan Display Inc.

Inventor： Go Miyazaki ,  Shuji Hayashi ,  Takeo Koito

IPC: G02F1/1335 ,  G02B30/26 ,  G02B30/31

Abstract: A display device includes a light source, a liquid crystal panel including a first sub-pixel and a second sub-pixel adjacent to the first sub-pixel in a first direction, and an optical control element including a light shielding layer. Each of the first sub-pixel and the second sub-pixel has a first width in the first direction. The light shielding layer includes an opening portion having a second width in the first direction. The second width is 1.5 times the first width. In all of light rays irradiated from the light source and transmitting through the opening portion, an angle between a first light ray transmitting through the first sub-pixel and emitted to an outside and the second light ray transmitting through the second sub-pixel and emitted to the outside is less than or equal to 2 degrees.

公开(公告)号：US11586078B2

公开(公告)日：2023-02-21

申请号：US17451507

申请日：2021-10-20

Applicant: Japan Display Inc.

Inventor： Shinichiro Tanaka ,  Takeo Koito ,  Kojiro Ikeda ,  Koichi Nagao

IPC: G02F1/1343 ,  G02F1/1347

Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell bonded to the first liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first substrate including first electrodes formed in a strip shape, a second substrate including second electrodes formed in a strip shape, and a liquid crystal layer held between the first substrate and the second substrate. An angle of intersection of the first electrodes and the second electrodes is less than 90° in each of the first liquid crystal cell and the second liquid crystal cell.

公开(公告)号：US11579499B2

公开(公告)日：2023-02-14

申请号：US17718745

申请日：2022-04-12

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/1339 ,  G02F1/1347 ,  G02F1/1335 ,  G02F1/133 ,  G02F1/1343

Abstract: According to one embodiment, an electronic apparatus includes a first liquid crystal panel, a second liquid crystal panel, a camera overlapping the first liquid crystal panel and the second liquid crystal panel and receiving light via the first liquid crystal panel and the second liquid crystal panel. The first liquid crystal panel includes a first liquid crystal layer, a first pixel electrode not overlapping the camera, and a second pixel electrode overlapping the camera. The second liquid crystal panel includes first transparent electrodes overlapping the camera, a second transparent electrode overlapping the first transparent electrodes, and a second liquid crystal layer disposed between the first transparent electrodes and the second transparent electrode.

公开(公告)号：US11333941B2

公开(公告)日：2022-05-17

申请号：US17443190

申请日：2021-07-22

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/1347 ,  G02F1/1335 ,  G02F1/133 ,  G02F1/1339 ,  G02F1/1343

Abstract: According to one embodiment, an electronic apparatus includes a first liquid crystal panel, a second liquid crystal panel, a camera overlapping the first liquid crystal panel and the second liquid crystal panel and receiving light via the first liquid crystal panel and the second liquid crystal panel. The first liquid crystal panel includes a first liquid crystal layer, a first pixel electrode not overlapping the camera, and a second pixel electrode overlapping the camera. The second liquid crystal panel includes first transparent electrodes overlapping the camera, a second transparent electrode overlapping the first transparent electrodes, and a second liquid crystal layer disposed between the first transparent electrodes and the second transparent electrode.

公开(公告)号：US11194172B2

公开(公告)日：2021-12-07

申请号：US16204587

申请日：2018-11-29

Applicant: Japan Display Inc. ,  NHK Technologies, Inc.

Inventor： Takeo Koito ,  Shuji Hayashi ,  Teijiro Otsuka

IPC: G02B30/00 ,  G02B30/27 ,  G02F1/1335

Abstract: A display device includes a display portion including sub-pixels, and a light control portion overlapping the display portion. The display portion includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel is shaped in a parallelogram, and inclined at a first angle of greater than or equal to 4° and less than or equal to 16° with respect to the second direction. The light control portion is inclined at a second angle substantially equivalent to arctan (2/9) with respect to the second direction.

公开(公告)号：US10823886B2

公开(公告)日：2020-11-03

申请号：US15900991

申请日：2018-02-21

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Yudai Numata

IPC: G02B5/30 ,  G02B27/28 ,  G02B5/124 ,  G02B5/13 ,  G02B30/56 ,  G02F1/1362 ,  G09G3/36 ,  G02F1/1368

Abstract: According to one embodiment, a display device including a display unit which emits display light, an optical element which includes a first surface on the display unit side, and a second surface on a side opposite to the first surface, and transmits and reflects incident light, and a retroreflective element provided on the first surface side or the second surface side, wherein the retroreflective element includes first and second retroreflectors which retroreflect light made incident through the optical element, and a transmissive portion located between the first retroreflector and the second retroreflector.