公开(公告)号：US11609488B2

公开(公告)日：2023-03-21

申请号：US17560742

申请日：2021-12-23

Applicant: TOPPAN Inc.

Inventor： Kei Saito ,  Sohei Abe ,  Yuji Yano ,  Saori Matsuyama

IPC: G03B21/62 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/137

Abstract: A screen including a light control sheet which includes a front surface and a rear surface and has a transparent state and an opaque state, and a transparent reflective layer that faces the rear surface. The front surface is positioned such that light from a projection device is applied in the opaque state. The opaque state includes a state in which an average diffuse reflectance of visible light applied to the front surface is 10% or more and less than 20%.

公开(公告)号：US11886086B2

公开(公告)日：2024-01-30

申请号：US18308084

申请日：2023-04-27

Applicant: TOPPAN Inc.

Inventor： Kaori Morinaga ,  Taisuke Enya ,  Yuji Yano ,  Masayuki Takahashi

IPC: G02F1/1334 ,  G02F1/137 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/137 ,  G02F1/1334 ,  G02F1/1337 ,  G02F1/13439 ,  G02F2203/48

Abstract: A light control sheet including a first transparent electrode layer, a second transparent electrode layer, a light control layer including a resin layer formed between the first transparent electrode layer and the second transparent electrode layer, the resin layer including voids dispersed therein and filled with a liquid crystal composition including liquid crystal molecules, and a first orientation layer formed between the first transparent electrode layer and the light control layer such that a haze of the light control layer is increased by applying a voltage to the first transparent electrode layer. The light control layer has a first surface in contact with the first orientation layer, and an area ratio of the voids at the first surface is 49% or more where the area ratio is a percentage of a total area of all the voids to an area of the first surface.