OPTICALLY ANISOTROPIC LAYER

Organization Name

fujifilm corporation

Inventor(s)

Shinpei Yoshida of Kanagawa (JP)

Yuta Takahashi of Kanagawa (JP)

Kentaro Yamura of Kanagawa (JP)

Keisuke Kodama of Kanagawa (JP)

OPTICALLY ANISOTROPIC LAYER

This abstract first appeared for US patent application 20240427208 titled 'OPTICALLY ANISOTROPIC LAYER

Original Abstract Submitted

an optically anisotropic layer formed of a liquid crystal compound, having first and second layers in direct contact with different alignment states, the first layer is formed by fixing an alignment state of the liquid crystal compound in homogeneous alignment, and the second layer in homeotropic alignment, and the optically anisotropic layer satisfies a relationship of expression (2a) xmax/xmin<1.10 when a region within a square having a largest size that can be drawn on a surface of the optically anisotropic layer is subdivided into 64 square-shaped sub-regions having the same area, a thickness d1 of the first layer and a thickness d2 of the second layer at a center position of the sub-region are obtained, x=d1/(d1 +d2) expression (1) for each sub-region is calculated, and among the calculated 64 x's, are a maximum value xmax and a minimum value xmin.