Helichromic compounds and displays.

摘要

A composition for use with liquid crystal compositions in liquid crystal display devices, which possesses both a chromophoric moiety and a helical ordering moiety. The helical ordering moiety is capable of helically ordering a mixture of liquid crystal material and helichromic compound. The helichromic compound can be utilized in conventional "guest-host" and "twist nematic" displays as well as in unique helichromic displays. When used in helichromic displays, the helichromic compounds eliminate after-image scattering and enable the display to be operated at reduced voltages.