There is a new type of reflective film material. Because its color can remain constant or change depending on the viewing angle when illuminated by a white light source, the material is expected to be used in traffic reflective signage to more intelligently guide and warn motorists or pedestrians at night.

The study can achieve an inverse reflection of light, that is, the direction of the reflected light is always close to the opposite direction of the incident light. Different from the chemical colors formed by pigments and dyes, structural colors are formed by refraction, reflection, or diffraction caused by light irradiation on the complex microstructure of the object's surface, and have the advantages of environmental protection and non-fading.

Road traffic signs sometimes focus on reminding drivers and sometimes need to remind pedestrians, and this smart reflective film can meet the needs of different tips, in addition, this film material is waterproof, energy saving, and related functions between minus 196 degrees Celsius to zero 100 degrees Celsius effective.

This film has application value in intelligent display, traffic safety reflective facilities, anti-counterfeiting labels, structural color coating, and decoration.