公开(公告)号：US12061398B2

公开(公告)日：2024-08-13

申请号：US18317300

申请日：2023-05-15

Applicant: TOPPAN Inc.

Inventor： Toshiji Yasuhara

IPC: G02F1/1343 ,  G02F1/1345

CPC classification number: G02F1/13439 ,  G02F1/13458

Abstract: A light control sheet includes transparent electrodes including a first and second transparent electrode layers, a light control layer, a transparent support layer, and a covering layer. The transparent support layer has a support surface supporting the first transparent electrode layer, the first transparent electrode layer includes a first electrode element and a second electrode element aligned along the support surface and electrically insulated from each other by a groove extending in a direction along the support surface of the transparent support layer and that the groove is penetrating through the transparent support layer and the first transparent electrode layer in a depth direction of the groove and has an opening on the protected surface of the transparent support layer, and the covering layer is formed such that the covering layer is covering the opening of the groove formed in the transparent support layer and the first transparent electrode layer.

公开(公告)号：US11686965B2

公开(公告)日：2023-06-27

申请号：US17563154

申请日：2021-12-28

Applicant: TOPPAN Inc.

Inventor： Toshiji Yasuhara ,  Takehiro Yamada

IPC: G02F1/1334 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/1334 ,  G02F1/137 ,  G02F1/13306 ,  G02F1/134309 ,  G02F2203/01

Abstract: A light control sheet including a light control layer switchable between a transparent state and an opaque state, and transparent electrode layers sandwiching the light control layer. The light control layer includes a transparent polymer layer that has domains whose average size is 1.0 μm-1.55 μm, and the light control layer includes a liquid crystal composition at a concentration of 37%-55% such that the liquid crystal composition fills the domains.

公开(公告)号：US12078892B2

公开(公告)日：2024-09-03

申请号：US17560521

申请日：2021-12-23

Applicant: TOPPAN Inc.

Inventor： Toshiji Yasuhara

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

CPC classification number: G02F1/13396 ,  G02F1/13392 ,  G02F1/13439 ,  G02F1/13306 ,  G02F1/13345

Abstract: A light control sheet including a first transparent electrode, a second transparent electrode, a liquid crystal layer formed between the first transparent electrode and the second transparent electrode, and spacers included in the liquid crystal layer. The spacers have an average size of 3 μm-50 μm, and the spacers have a size distribution that has a plurality of discrete peaks.

公开(公告)号：US11966122B2

公开(公告)日：2024-04-23

申请号：US18077491

申请日：2022-12-08

Applicant: TOPPAN Inc.

Inventor： Gen Nakamura ,  Toshiji Yasuhara ,  Taisuke Enya ,  Yuka Kurokawa ,  Yusuke Takahashi

IPC: G02F1/1337 ,  G02F1/00 ,  G02F1/13

CPC classification number: G02F1/133773 ,  G02F1/0045 ,  G02F1/1316

Abstract: A light control sheet including a first transparent electrode layer, a second transparent electrode layer, a light control layer including a resin layer which is formed between the first and second transparent electrode layers and includes a liquid crystal composition in holes formed in the resin layer, the liquid crystal composition including liquid crystal molecules, and a first alignment layer formed between the first transparent electrode layer and the light control layer such that a haze of the light control layer is increased upon application of a voltage to the first transparent electrode layer. The light control layer includes a first high-density portion and a low-density portion, and the first high-density portion is in contact with the first alignment layer and includes the liquid crystal composition at a density higher than a density of the liquid crystal composition in the low-density portion per unit thickness of the light control layer.