Toppan Inc.

Taisuke Enya

Masayuki Takahashi

Yuji Yano

Toshiji Yasuhara

Yusuke Takahashi

Kaori Morinaga

Gen Nakamura

Yuka Kurokawa

A light control sheet including a first transparent electrode layer, a second transparent electrode layer, a light control layer formed between the first transparent electrode layer and the second transparent electrode layer, the light control layer including a transparent polymer layer having voids filled with a liquid crystal composition including liquid crystal molecules, and spacers formed in the light control layer and including polymethyl methacrylate.

Light control sheet

A light control layer contains a liquid crystal composition and a resin composition. The liquid crystal composition is composed of a liquid crystal compound having a nematic-isotropic phase transition temperature of 110° C. or greater and 140° C. or less, the resin composition contains an acrylic polymer, a bridging group of the acrylic polymer is a saturated alkyl group having 1 or more and 12 or fewer carbon atoms, and the resin composition contains, in the acrylic polymer, a moiety in which the saturated alkyl group is a linear alkyl group, whereby a light control device operates normally over a wider temperature range.

Light control sheet, light control device, photosensitive composition, and method for producing light control sheet

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.

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.

Growing community of inventors

Taito-ku, Japan

Taisuke Enya