Preparation method for liquid crystal material of electronic paper material

Abstract

The invention relates to a preparation method for liquid crystal material of electronic paper material, belonging to the functional polymer liquid crystal display field. The manufacturing process is that a series of choiesl-like compounds are mixed, so that the indoor temperature is in the liquid crystal state; nematic liquid crystal and hydrogenbond-like chirality compounds are fed in the mixture; when the temperature is raised to a certain degree, the hydrogenbond-like chirality compounds are decomposed, and the liquid-system thread pitch is changed, so that the reflecting color is changed;after the temperature is reduced to the room temperature, the changed color can keep a period of time, namely, the changed color has memory; then, along with the completion of the self-assembling of chirality compounds in the system, the reflecting color is recovered to the initial state; polymerizable monomer and light photoinitiator are added in the system, and a polymer wall is formed by ultraviolet polymerization under a photomask, thereby obtaining a reflecting colorful display electronic paper driven by a thermal field. The preparation method has the advantages that the background colorof the liquid crystal material can be regulated as required, the color is brilliant without the background source, the energy is saved, and the method can be applied in a display device, a thermal sensitivity temperature sensor and the like.

Description

technical field

[0001] The invention belongs to the field of functional polymer liquid crystal displays, and relates to liquid crystal materials, cholesterol compounds and hydrogen bond self-assembly chiral compounds. When the external temperature changes, the reflection color of the composite material changes and has a memory effect. It can be applied to color display devices, heat-sensitive temperature sensors and the like. Background technique

[0002] Liquid crystal is a special form of matter in nature. It is different from crystals and ordinary liquids in that in the liquid crystal state, the centroids of liquid crystal molecules are disordered (crystals are ordered), and their directors are ordered. (ordinary liquid disorder). Therefore, liquid crystal is an optically anisotropic material sensitive to external fields. Because of this special structure, liquid crystals can modulate light, and thus are widely used in the display field.

[0003] Cholesteric liquid cr...

Images