公开(公告)号：US12038655B2

公开(公告)日：2024-07-16

申请号：US18222154

申请日：2023-07-14

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Takeo Koito ,  Kojiro Ikeda

IPC: G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/13439 ,  G02F1/1347

Abstract: An optical element includes at least two liquid crystal cells. The at least two liquid crystal cells include a first substrate on which a first transparent electrode and a second transparent electrode are alternately and repeatedly arranged in a first direction, a second substrate on which a third transparent electrode and a fourth transparent electrode are alternately and repeatedly arranged in a second direction intersecting the first direction, and a liquid crystal layer between the first substrate and the second substrate. The second transparent electrode comprises a first bent portion bent in the first direction. The fourth transparent electrode comprises a second bent portion bent in the second direction.

公开(公告)号：US12007588B2

公开(公告)日：2024-06-11

申请号：US17705917

申请日：2022-03-28

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02B30/31 ,  G02B30/32 ,  G02F1/29

CPC classification number: G02B30/31 ,  G02B30/32 ,  G02F1/29

Abstract: According to an aspect, a liquid crystal display device includes: a first panel configured to display an image; a backlight configured to irradiate the first panel with light; and a second panel configured to limit an emission area of the light. The second panel includes a plurality of first electrodes whose potentials are individually controllable and a second electrode provided at a position opposite to the first electrodes with liquid crystal between the first and second electrodes. The first electrodes are arranged in a first direction along the second panel. The first electrodes are provided with such a potential that liquid crystal in a first state and liquid crystal in a second state alternately occur in the first direction. The first state is a state of blocking light. The second state is a state of transmitting light and changing refractive index distribution of light incident from the backlight side.

公开(公告)号：US11982907B2

公开(公告)日：2024-05-14

申请号：US18102284

申请日：2023-01-27

Applicant: Japan Display Inc.

Inventor： Yoshihiro Sakurai ,  Hironao Tanaka ,  Harumi Okuno ,  Takeo Koito

IPC: G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/1337 ,  G02F1/133707 ,  G02F1/134363 ,  G02F1/134372 ,  G02F1/133749

Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.

公开(公告)号：US11940710B2

公开(公告)日：2024-03-26

申请号：US18299083

申请日：2023-04-12

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Takeo Koito ,  Masashi Mitsui

IPC: G02F1/29 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/29 ,  G02F1/133738 ,  G02F1/133742 ,  G02F1/134309 ,  G02F2201/122 ,  G02F2203/07

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

公开(公告)号：US11934082B2

公开(公告)日：2024-03-19

申请号：US17659394

申请日：2022-04-15

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Masashi Mitsui ,  Tae Kurokawa

IPC: G02F1/29 ,  G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/29 ,  G02F1/134309 ,  G02F1/13471 ,  G02F2202/28

Abstract: According to one embodiment, a light control device includes a first substrate including a plurality of first control electrodes disposed in an effective area, and a plurality of feed lines disposed in a peripheral area, a second substrate, and a first liquid crystal layer. The first control electrodes are transparent electrodes. Each of the first control electrodes includes, in the effective area, first segments crossing a first direction at a first angle, second segments crossing the first direction at a second angle, and third segments crossing the first direction at a third angle. The first control electrode is electrically connected to the feed line. The first to third angles are different from each other.

公开(公告)号：US11921384B2

公开(公告)日：2024-03-05

申请号：US17881610

申请日：2022-08-05

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Tae Kurokawa ,  Masashi Mitsui

IPC: G02F1/1347 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/29

CPC classification number: G02F1/1347 ,  G02F1/133528 ,  G02F1/13362 ,  G02F1/134309 ,  G02F1/13756 ,  G02F1/29

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.

公开(公告)号：US11874567B2

公开(公告)日：2024-01-16

申请号：US17970812

申请日：2022-10-21

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/134336 ,  G02F1/133512

Abstract: According to an aspect, a display device includes: a display panel including a plurality of pixels disposed in a matrix having a row-column configuration; and a light control panel configured to control light traveling from the display panel to a plurality of viewpoints such that the light varies from viewpoint to viewpoint. The pixels include a first pixel configured to output light in a first color and a second pixel configured to output light in a second color. The first and second pixels are arranged in a column direction orthogonal to an arrangement direction of the viewpoints. A width of each pixel in a row direction along the arrangement direction of the viewpoints is greater than a width of the pixel in the column direction.

公开(公告)号：US11829014B1

公开(公告)日：2023-11-28

申请号：US18206237

申请日：2023-06-06

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Shuji Hayashi

IPC: G02F1/13 ,  G02F1/1343 ,  H04N13/351 ,  H04N13/317

CPC classification number: G02F1/1323 ,  G02F1/134363 ,  H04N13/317 ,  H04N13/351

Abstract: According to an aspect, a display device includes: a display panel; and a parallax formation panel disposed between the display panel and a viewpoint. The parallax formation panel includes first electrodes and second electrodes, the first electrodes being provided to be able to form light transmitting regions in accordance with positions of a plurality of predetermined viewpoints, the second electrodes being provided to be able to form light shielding regions that shield regions other than the light transmitting regions from light. A width of each first electrode in a first direction in which the plurality of viewpoints are arranged is longer than a length of each first electrode in a second direction orthogonal to the first direction and extending along a display surface of the display panel.

公开(公告)号：US11567369B2

公开(公告)日：2023-01-31

申请号：US17339488

申请日：2021-06-04

Applicant: Japan Display Inc.

Inventor： Yoshihiro Sakurai ,  Hironao Tanaka ,  Harumi Okuno ,  Takeo Koito

IPC: G02F1/1337 ,  G02F1/1343

Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.

公开(公告)号：US11373611B2

公开(公告)日：2022-06-28

申请号：US16926137

申请日：2020-07-10

Applicant: Japan Display Inc.

Inventor： Kazuyuki Kobayashi ,  Hayato Kurasawa ,  Hiroshi Mizuhashi ,  Masaya Tamaki ,  Takeo Koito ,  Koji Noguchi

IPC: G09G3/36 ,  G06F3/041 ,  G06F3/044 ,  F21V8/00

Abstract: A sensor-equipped display device is provided and includes display panel including first and second substrates, common electrode, and polarizer; backlight unit which emits light toward display panel, including light guide opposed to polarizer and light source which emits light toward light guide; conductive member arranged at back side of display panel and opposed to polarizer; controller; first flexible printed circuit; and second flexible printed circuit, wherein first flexible printed circuit is connected to display panel, second flexible printed circuit is connected to back side of first flexible printed circuit, common electrode is connected to controller via first flexible printed circuit, second flexible printed circuit comprises first branch portion and second branch portion, first branch portion is connected to light source, and conductive member is connected to controller via second branch portion of second flexible printed circuit and first flexible printed circuit.