Lichtsteuerungsfolie, Lichtsteuerungsvorrichtung und Verfahren zur Herstellung einer Lichtsteuerungsfolie

Details

Veröffentlichungs-Nr.

EP4811024

Anmeldetag

15. November 2024

Veröffentlichung

22. Mai 2025

Rechtsraum

EP

IPC

G02F1/13, G02F1/1334

Abstract

A liquid crystal composition includes a liquid crystal compound and at least one dichroic dye. The liquid crystal compound accounts for 45% by mass or more of the sum of the mass of a transparent polymer layer and the mass of the liquid crystal composition. A light control sheet exhibiting a second state has a total light transmittance T of 10% or more and 80% or less. The anisotropy value Rm of the dichroic dye is 0.25 or higher and 0.94 or lower, and satisfies equation (1). In equation (1), ln denotes a natural logarithm. Anisotropy value Rm ≥ 0.3434 ln T − 0.4297 <img class="EMIRef" id="c3f71097-01d8-4c42-99a8-69ca7905c015-ia01" />

Anmelder

Firma

Toppan Holdings Inc.

Land

🇯🇵 Japan

Fachgebiete