To provide a pattern print transparent sheet which is a member for providing a coordinate detection means which can be applied to a data input system of a direct handwriting type on the screen of a display device, and allows weight reduction, mass production, and cost reduction, and facilitates making a large area, and suppresses the shift of the reflected wavelength of invisible rays.
The pattern print transparent sheet 1 is made by printing a transparent pattern 3 on the surface of a transparent substrate 2, and ink composing the transparent pattern 3 contains materials on which invisible rays of light are reflected, and the materials on which the invisible light rays are reflected are crystal liquid materials having a fixed cholesteric structure having wavelength selection reflexibility to the wavelength of infrared or ultrasonic region, and 60 mol% or more of the liquid crystal materials contained in the transparent pattern 3 is multi-functional liquid crystal materials having two or more functional groups.
Miyazaki, Yuichi
Tazaki, Keiko
