Toppan Inc.

Toppan Printing Co., Ltd.

Sohei Abe

Yuji Yano

Keisuke Fukuhara

Kei Saito

Saori Matsuyama

A light control sheet including a light control sheet body having a front surface and a back surface, the light control sheet body including a first film including a transparent electrode layer, a second film including a transparent electrode layer, a liquid crystal layer formed between the first and second films, and a sealant covering an edge portion of the liquid crystal layer. The second film has a second film contact surface which includes a portion in contact with the liquid crystal layer, and further includes a second film outer peripheral part on which the sealant is formed, the second film outer peripheral part is extended along the edge portion of the liquid crystal layer, and when viewed in a first direction from the front surface to the back surface, the second film outer peripheral part does not overlap the first film or the liquid crystal layer.

Light control sheet and light control device

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%.

Screen

A light control device includes a first transparent coating substrate having a first bonding surface, a second transparent coating substrate having a second bonding surface, a light control sheet located between the first and second bonding surfaces, and a transparent adhesive layer that joins the first and second bonding surfaces together around the light control sheet. The light control sheet includes a first transparent electrode film, a second transparent electrode film, and a liquid crystal layer including a liquid crystal composition that fills space between the first transparent electrode film and the second transparent electrode film. The light control sheet has a sheet edge face, and the transparent adhesive layer covers the sheet edge face and has a water absorption rate of 2% or less in accordance with a method of JIS K 7209:2000 A.

Growing community of inventors

Taito-ku, Japan

Sohei Abe