公开(公告)号：US20250060623A1

公开(公告)日：2025-02-20

申请号：US18934772

申请日：2024-11-01

Applicant: TOPPAN HOLDINGS INC.

Inventor： Kimio HORIKAWA ,  Fumio OONUMA ,  Toshiji YASUHARA ,  Gen NAKAMURA

IPC: G02F1/133

Abstract: A light control sheet is reversibly changeable between transparent and opaque in response to a change in alignment of a liquid crystal compound. The light control sheet includes a light control layer including a polymer resin layer in which voids are dispersed, and a liquid crystal composition containing the liquid crystal compound. The liquid crystal composition is filling the voids. In the light control layer, a percentage of a volume of the liquid crystal composition relative to a total volume of the polymer resin layer and the liquid crystal composition is 40% or greater and 60% or less. Avoid diameter of the voids is 2 μm or less.