公开(公告)号：US20230205010A1

公开(公告)日：2023-06-29

申请号：US18089303

申请日：2022-12-27

Applicant: Sharp Display Technology Corporation

Inventor： Tomonori YOSHIDA ,  Yasuhiro HASEBA ,  Kimiaki NAKAMURA ,  Koji MURATA

IPC: G02F1/13357 ,  G02F1/1334

CPC classification number: G02F1/133615 ,  G02F1/13345 ,  G02F2201/34

Abstract: Provided is a liquid crystal display element capable of switching between a transparent state and a scattering state and of reducing or preventing a decrease in luminance in the scattering state. The liquid crystal display element includes a liquid crystal panel containing a polymer-dispersed liquid crystal containing a polymer network and a liquid crystal component, and a light source module including a light source adjacent to the liquid crystal panel and a mirror configured to reflect light emitted from the light source toward the liquid crystal panel.

公开(公告)号：US20230024383A1

公开(公告)日：2023-01-26

申请号：US17852411

申请日：2022-06-29

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Yasuhiro HASEBA ,  Kazutaka HANAOKA ,  Kimiaki NAKAMURA ,  Mariko HONDA ,  Atsuko KANASHIMA ,  Tadashi HASEGAWA ,  Shinji SHIMADA

IPC: G02F1/1334 ,  G02F1/13357 ,  G02F1/1337 ,  G02F1/137

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

公开(公告)号：US20230134662A1

公开(公告)日：2023-05-04

申请号：US17969839

申请日：2022-10-20

Applicant: Sharp Display Technology Corporation

Inventor： Naru USUKURA ,  Hiroaki ASAGI ,  Yasuhiro HASEBA ,  Kiyoshi MINOURA

IPC: G02F1/29 ,  G06F1/16

Abstract: Provided is a liquid crystal lens including: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer held between the first substrate and the second substrate and containing liquid crystal molecules. The first substrate includes a Fresnel lens and a first electrode sequentially toward the liquid crystal layer. The second substrate includes a second electrode. The Fresnel lens includes a Fresnel-shaped part including annular lens surfaces in a concentric circle pattern and a flat part including a flat surface that extends in a radial direction of the concentric circle and intersects at least one of the annular lens surfaces. The annular lens surfaces are on a liquid crystal layer-facing surface of the Fresnel-shaped part and defines an uneven surface. The flat surface is on the liquid crystal layer-facing surface of the flat part.

公开(公告)号：US20240094577A1

公开(公告)日：2024-03-21

申请号：US18383548

申请日：2023-10-25

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Yasuhiro HASEBA ,  Kazutaka HANAOKA ,  Kimiaki NAKAMURA ,  Mariko HONDA ,  Atsuko KANASHIMA ,  Tadashi HASEGAWA ,  Shinji SHIMADA

IPC: G02F1/1334 ,  G02F1/13357 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/1334 ,  G02F1/133603 ,  G02F1/1337 ,  G02F1/13706

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

公开(公告)号：US20230314885A1

公开(公告)日：2023-10-05

申请号：US18126338

申请日：2023-03-24

Applicant: Sharp Display Technology Corporation

Inventor： Yasuhiro HASEBA ,  Takako KOIDE

IPC: G02F1/1362 ,  C09K19/30 ,  C09K19/06

CPC classification number: G02F1/136222 ,  C09K19/3003 ,  C09K19/062 ,  C09K19/3098 ,  C09K2019/3004

Abstract: A liquid crystal display device includes, in sequence, a backlight, a first substrate including a color filter layer, a liquid crystal layer containing a liquid crystal composition, and a second substrate. The liquid crystal composition contains a liquid crystal compound having a phenyl group and a conjugated bond group. The phenyl group has a halogen atom substituted for at least one hydrogen atom. The conjugated bond group is conjugated with the phenyl group to form a continuous conjugated system.

公开(公告)号：US20240377683A1

公开(公告)日：2024-11-14

申请号：US18691293

申请日：2021-11-16

Applicant: Sharp Display Technology Corporation

Inventor： Kimiaki NAKAMURA ,  Masakazu SHIBASAKI ,  Yasuhiro HASEBA ,  Koji MURATA

IPC: G02F1/1343 ,  G02F1/133 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/1339

Abstract: A display device includes: a plurality of first colored particles contained in a space between a first substrate and a second substrate; a light-emitting portion having a first light-emitting element provided on the first substrate, and a first-light-emitting-element driving circuit provided on the first substrate and configured to drive the first light-emitting element; a first transparent portion disposed in a direction along a main surface of the first substrate with respect to the light-emitting portion; a first electrode provided in the light-emitting portion; and a second electrode provided in the first transparent portion and being nckudestransparent. The display device is capable of switching between a light-transmitting state of the first transparent portion in which the first electrode attracts the plurality of first colored particles, and a light-blocking state of the first transparent portion in which the second electrode attracts the plurality of first colored particles.

公开(公告)号：US20220236598A1

公开(公告)日：2022-07-28

申请号：US17579388

申请日：2022-01-19

Applicant: Sharp Display Technology Corporation

Inventor： Koji MURATA ,  Kimiaki NAKAMURA ,  Mariko HONDA ,  Tadashi HASEGAWA ,  Kazutaka HANAOKA ,  Yasuhiro HASEBA ,  Shinji SHIMADA ,  Atsuko KANASHIMA

IPC: G02F1/1334 ,  G02F1/1337 ,  G02F1/1341

Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.