公开(公告)号：US20240021747A1

公开(公告)日：2024-01-18

申请号：US18350203

申请日：2023-07-11

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Junji KOBASHI ,  Shinichiro OKA

IPC: H01L31/054 ,  G02F1/137 ,  G02F1/139 ,  G02F1/1347

CPC classification number: H01L31/0543 ,  G02F1/13718 ,  G02F1/1396 ,  G02F1/13471 ,  G02F2201/50

Abstract: According to one embodiment, a photovoltaic cell device includes a transparent substrate including a first side surface, a second side surface, and a third side surface, a first liquid crystal layer, a second liquid crystal layer, a first photovoltaic cell opposed to the first side surface, a second photovoltaic cell opposed to the second side surface, and a third photovoltaic cell opposed to the third side surface. The first liquid crystal layer comprises a first reflective surface. The second liquid crystal layer comprises a second reflective surface. In plan view, an angle formed by a normal of the first reflective surface and a normal of the second reflective surface is greater than 0° but less than 180°.

公开(公告)号：US20230417970A1

公开(公告)日：2023-12-28

申请号：US18465199

申请日：2023-09-12

Applicant: Japan Display Inc.

Inventor： Junji KOBASHI

IPC: G02B5/30 ,  G02B5/18

CPC classification number: G02B5/3016 ,  G02B5/1814

Abstract: According to one embodiment, a polarization conversion element includes a first light guide including a first main surface and a side surface, a transmissive first polarization grating opposed to the side surface, and a reflective second polarization grating opposed to the first main surface. The first polarization grating is configured to diffract first circularly polarized light of unpolarized incident light and to diffract second circularly polarized light which rotates in a direction opposite to the first circularly polarized light in a direction different from the first circularly polarized light. The second polarization grating is configured to reflect the first circularly polarized light on the reflective surface.

公开(公告)号：US20210311362A1

公开(公告)日：2021-10-07

申请号：US17216855

申请日：2021-03-30

Applicant: Japan Display Inc.

Inventor： Junji KOBASHI ,  Takeo KOITO

IPC: G02F1/1335 ,  G02F1/13357

Abstract: The lighting device includes a light source, a geometric phase lens over the light source, and a variable phase difference element over the geometric phase lens. The geometric phase lens is configured to separate into a first light having a focal length +f and a second light having a focal length −f. The variable phase difference element is configured to convert a polarization state of each of the first light and the second light.

公开(公告)号：US20250013102A1

公开(公告)日：2025-01-09

申请号：US18760488

申请日：2024-07-01

Applicant: Japan Display Inc.

Inventor： Ayaka HIGUCHI ,  Shinichiro OKA ,  Koichi IGETA ,  Junji KOBASHI

IPC: G02F1/1337 ,  G02F1/13363

Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate having a first main surface, an alignment control layer having a plurality of convex bodies, and a liquid crystal layer having a cholesteric liquid crystal. The alignment control layer has a first alignment area in which the convex bodies are arranged at a first pitch, and a second alignment area in which the convex bodies are arranged at a second pitch. The second pitch is less than the first pitch. The liquid crystal layer has a first liquid crystal area which overlaps the first alignment area, and a second liquid crystal area which overlaps the second alignment area.

公开(公告)号：US20240187561A1

公开(公告)日：2024-06-06

申请号：US18527869

申请日：2023-12-04

Applicant: Japan Display Inc.

Inventor： Kazunari TOMIZAWA ,  Junji KOBASHI

IPC: H04N13/312

CPC classification number: H04N13/312

Abstract: A display device includes: a display panel with pixels; a light source with light emission points; an acquirer configured to acquire viewpoint information; and a controller configured to control image display based on the viewpoint information on positions of viewpoints and an arrangement direction of the viewpoints. The controller is configured to drive some or all of pixels positioned on straight lines each connecting a corresponding one of the light emission points to a corresponding one of the viewpoints based on a relative rotation angle between the display panel and the arrangement direction and a relative positional relation between the viewpoints and the light emission points. The light emission points are individually switchable between a turned-on state and a turned-off state. A pitch of the light emission points is smaller than a pitch of light emission points controlled to be turned on when outputting an individual image to each viewpoint.

公开(公告)号：US20240045273A1

公开(公告)日：2024-02-08

申请号：US18363134

申请日：2023-08-01

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Shinichiro OKA ,  Koichi IGETA ,  Junji KOBASHI ,  Ayaka HIGUCHI

IPC: G02F1/1337 ,  G02F1/1347 ,  H01L31/054

CPC classification number: G02F1/133788 ,  G02F1/133726 ,  G02F1/13478 ,  H01L31/054

Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a first alignment control layer disposed on the substrate and comprising projections arranged at a predetermined pitch, and a first liquid crystal layer disposed on the first alignment control layer. The first liquid crystal layer comprises liquid crystal molecules which are aligned such that major axes of the liquid crystal molecules extend along the projections, respectively, and cured in a state where alignment directions of the liquid crystal molecules are fixed. The first alignment control layer is formed of a crosslinkable liquid crystal polymer.

公开(公告)号：US20220113460A1

公开(公告)日：2022-04-14

申请号：US17450479

申请日：2021-10-11

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Junji KOBASHI ,  Koichi OKUDA ,  Ken ONODA ,  Hiroaki KIJIMA

IPC: G02B5/30

Abstract: According to one embodiment, a display device includes a display panel configured to emit display light of linearly polarized light, a first semi-transparent element transmitting first circularly polarized light and reflecting second circularly polarized light, a first retardation film, a second semi-transparent element reflecting the first circularly polarized light and transmitting the second circularly polarized light, a second retardation film having a refractive anisotropy in which refractive indexes of directions orthogonal to each other in a plane are substantially equivalent to each other and a refractive index in a normal is different from a refractive index in a plane, and a first element having a lens action of condensing the second circularly polarized light.

公开(公告)号：US20240184028A1

公开(公告)日：2024-06-06

申请号：US18442385

申请日：2024-02-15

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Shinichiro OKA ,  Yasushi TOMIOKA ,  Junji KOBASHI

IPC: G02B5/30

CPC classification number: G02B5/3016

Abstract: According to one embodiment, a liquid crystal optical element including a first substrate including a first transparent substrate, a first alignment film, and a first liquid crystal layer which includes first cholesteric liquid crystals, and which reflects part of light incident through the first transparent substrate toward the first transparent substrate, a second substrate including a second transparent substrate, a second alignment film, and a second liquid crystal layer which includes second cholesteric liquid crystals, and which reflects part of light transmitted through the first liquid crystal layer toward the first transparent substrate, and a transparent adhesive layer which adheres the first substrate and the second substrate.

公开(公告)号：US20240129430A1

公开(公告)日：2024-04-18

申请号：US18380435

申请日：2023-10-16

Applicant: JAPAN DISPLAY INC.

Inventor： Kazunari TOMIZAWA ,  Naoshi GOTO ,  Tsutomu HARADA ,  Junji KOBASHI

IPC: H04N7/14 ,  H04N23/57 ,  H04N23/611 ,  H04N23/90

CPC classification number: H04N7/144 ,  H04N23/57 ,  H04N23/611 ,  H04N23/90

Abstract: According to one embodiment, a display device includes a display panel having a display area where an image is displayed, a plurality of cameras provided at positions overlapping with the display area in plan view to capture a user opposed to the display device as a subject, a controller selecting one of the plurality of cameras as a camera to capture the subject, based on positions of eyes of a person included in the image displayed in the display area.

公开(公告)号：US20230408877A1

公开(公告)日：2023-12-21

申请号：US18460784

申请日：2023-09-05

Applicant: Japan Display Inc.

Inventor： Takeo KOITO ,  Junji KOBASHI

IPC: G02F1/1347 ,  G02F1/29 ,  G02F1/13363 ,  G02F1/1335

CPC classification number: G02F1/1347 ,  G02F1/292 ,  G02F1/13363 ,  G02F1/133536

Abstract: The display device includes an image display panel emitting linearly polarized light from a display area, a retardation plate on the image display panel, a variable phase difference element located on the retardation plate and providing phase difference to an incoming light, and a liquid crystal diffraction element on the variable phase difference element. The variable phase difference element is switchable between an on state, an off state, and an intermediate state, and the phase change of the intermediate state is smaller than the phase change of the on state. A first emission direction of a first emitted light in the on state, a second emission direction of a second emitted light in the off state, and a third emission direction of a third emitted light in the intermediate state are different from each other.