公开(公告)号：US12216373B2

公开(公告)日：2025-02-04

申请号：US18630538

申请日：2024-04-09

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/137 ,  B60K35/00 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1347

Abstract: According to one embodiment, a display device includes a display panel configured to modulate a first polarization component, a first viewing angle control panel including a first liquid crystal layer containing twisted liquid crystal molecules, a second viewing angle control panel including a second liquid crystal layer containing twisted liquid crystal molecules, and a polarization axis rotation element provided between the first viewing angle control panel and the display panel. A second polarization axis of a second polarization component which passed through the first viewing angle control panel is different from a first polarization axis of the first polarization component. The polarization axis rotation element is configured to rotate the second polarization axis.

公开(公告)号：US12210248B2

公开(公告)日：2025-01-28

申请号：US17708166

申请日：2022-03-30

Applicant: Japan Display Inc.

Inventor： Shunichi Kimura ,  Toshiharu Matsushima ,  Shinichi Komura

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

Abstract: The purpose of the present invention is to realize a high contrast display with liquid crystal display device using a liquid crystal light valve. A representative structure is as follows. A liquid crystal display device includes a liquid crystal display panel, a backlight, and a liquid crystal light valve; the light valve includes a plurality of first electrodes extending in a first direction and formed on the first substrate; a first insulating film is formed on the first electrode; a plurality of second electrodes are formed in a matrix at predetermined intervals on the first insulating film; a second insulating film is formed on the second electrodes; a plurality of third electrodes extending in a second direction are formed on the second insulating film; the liquid crystal is sandwiched between the third electrodes and the second substrate; the predetermined interval between the second electrodes is 2 to 10 μm.

公开(公告)号：US12001089B2

公开(公告)日：2024-06-04

申请号：US18336246

申请日：2023-06-16

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/13 ,  G02F1/133 ,  G02F1/1335 ,  B60K35/00 ,  B60K35/65 ,  B60K35/81

CPC classification number: G02F1/1323 ,  G02F1/13318 ,  G02F1/133528 ,  B60K35/00 ,  B60K35/658 ,  B60K35/81

Abstract: According to one embodiment, a display system includes an external light sensor, a display panel, a viewing angle control panel including a liquid crystal layer containing liquid crystal molecules twist-aligned, configured such that a drive voltage applied to the liquid crystal layer is controlled based on an external light intensity detected by the external light sensor, and a polarization axis rotation element disposed between the viewing angle control panel and the display panel. The drive voltage when the external light intensity is less than a threshold value is greater than the drive voltage when the external light intensity is greater or equal to than the threshold value.

公开(公告)号：US11988933B2

公开(公告)日：2024-05-21

申请号：US17950104

申请日：2022-09-22

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/137 ,  B60K35/00 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1347

CPC classification number: G02F1/137 ,  G02F1/0136 ,  G02F1/133531 ,  G02F1/133638 ,  G02F1/1347 ,  B60K35/00 ,  B60K2370/25 ,  B60K2370/33

Abstract: According to one embodiment, a display device includes a display panel configured to modulate a first polarization component, a first viewing angle control panel including a first liquid crystal layer containing twisted liquid crystal molecules, a second viewing angle control panel including a second liquid crystal layer containing twisted liquid crystal molecules, and a polarization axis rotation element provided between the first viewing angle control panel and the display panel. A second polarization axis of a second polarization component which passed through the first viewing angle control panel is different from a first polarization axis of the first polarization component. The polarization axis rotation element is configured to rotate the second polarization axis.

公开(公告)号：US11841588B2

公开(公告)日：2023-12-12

申请号：US18178655

申请日：2023-03-06

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/133707 ,  G02F1/1337 ,  G02F1/134309 ,  G02F1/134363 ,  G02F1/133738 ,  G02F1/134372 ,  G02F2201/124

Abstract: According to one embodiment, a display device includes a first substrate with a first alignment film, a second substrate with a second alignment film, and a liquid crystal layer interposed therebetween. The first substrate has first and second electrodes. An initial alignment direction of liquid crystal molecules of the liquid crystal layer is parallel to a first direction or a direction orthogonal to the first direction. The second electrode includes comblike electrodes extending parallel to the first direction and a connecting portion which connects the comblike electrodes. The connecting portion includes a projection which projects in a second direction more than an outermost comblike electrode.

公开(公告)号：US11789318B2

公开(公告)日：2023-10-17

申请号：US17714179

申请日：2022-04-06

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/13363 ,  G02F1/1335

CPC classification number: G02F1/133636 ,  G02F1/133531

Abstract: According to one embodiment, a display device includes a first viewing angle control panel including a first liquid crystal molecule, a second viewing angle control panel including a second liquid crystal molecule, and a polarization axis rotating element. An initial alignment direction of the first liquid crystal molecule is substantially orthogonal to an initial alignment direction of the second liquid crystal molecule. A second polarization component transmitted through the first viewing angle control panel includes a second polarization axis. A third polarization component transmitted through the second viewing angle control panel includes a third polarization axis. The polarization axis rotating element rotates the third polarization axis to align the third polarization axis with the second polarization axis.

公开(公告)号：US11762246B2

公开(公告)日：2023-09-19

申请号：US17751687

申请日：2022-05-24

Applicant: Japan Display Inc.

Inventor： Shunichi Kimura ,  Toshiharu Matsushima

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/134363 ,  G02F1/1337 ,  G02F1/13706 ,  G02F1/13712 ,  G02F1/134318

Abstract: According to one embodiment, a display device comprises first and second substrates. The first substrate comprise first and second common electrodes, and a first pixel electrode including a pair of first sides arranged in a first direction. The second common electrode includes first and second trunk portions, and a first branch portion extending from the second trunk portion toward the first trunk portion. The first pixel electrode is located between the trunk portions. The first branch portion overlaps with the first pixel electrode between the first sides. A width of the first pixel electrode between the first sides becomes smaller toward the second trunk portion.

公开(公告)号：US10578932B2

公开(公告)日：2020-03-03

申请号：US15359650

申请日：2016-11-23

Applicant: Japan Display Inc.

Inventor： Masaya Tamaki ,  Toshiharu Matsushima

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1362

Abstract: According to an aspect, a liquid crystal display device includes: a first substrate and a second substrate that face each other; a liquid crystal layer provided between the first substrate and the second substrate; and a first electrode and a second electrode provided between the first substrate and the liquid crystal layer. The first electrode includes: at least an electrode base portion that extends in a first direction; and a plurality of comb-shaped portions that protrude from the electrode base portion at a fixed distance away from each other, and extend in a second direction different from the first direction. Each comb-shaped portion has a coupling portion layered on or under the electrode base portion.

公开(公告)号：US10416497B2

公开(公告)日：2019-09-17

申请号：US15427710

申请日：2017-02-08

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima

IPC: G02F1/1337 ,  G02F1/1343

Abstract: According to one embodiment, a liquid crystal display device includes first and second electrodes. A subpixel area includes a first area in which the first electrode is formed, and a second area in which the first electrode is not formed. The first area includes a connective area extending in first directions, and branch areas extending from the connective area. The subpixel areas include a first and second subpixel areas. The first directions intersect with second directions. Each of the branch areas extends from the connective area in the second direction 2A in the first subpixel area, and each of the branch areas extends from the connective area in the second direction 2B in the second subpixel area.

公开(公告)号：US10151952B2

公开(公告)日：2018-12-11

申请号：US15916337

申请日：2018-03-09

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Toshiharu Matsushima

IPC: G02F1/1343 ,  G02F1/1337

Abstract: According to an aspect, a display device has a first electrode, a second electrode and liquid crystal layer. When a voltage is not applied to the first and second electrodes, the major axes of the liquid crystal molecules are oriented in a third direction. When a voltage is applied between the first and second electrodes, the major axes are oriented so as to rise in a direction perpendicular to a first substrate while rotating clockwise in a vicinity of one of long sides of comb tooth portion that face each other and counterclockwise in a vicinity of the other of the long sides. An angle between an electrode base-side portion of a long side of each comb tooth portions and the third direction is larger than an angle between a distal end-side portion of the long side of each comb tooth portions and the third direction.