Electrically induced discoloration discoloration, Electrochromism materials is a good example of polyaniline, polyaniline by electrochemical process or the chemical oxidation of aniline process to form.If the electrodes immersed in hydrochloric acid solution containing low concentration of aniline, can produce polyaniline film on the electrode.According to the different oxidation state, polyaniline can appears as light yellow or dark green/black.Other find technology application of color change materials including viologen and en: polyoxotungstate.More color materials including tungsten oxide (WO3), its main purpose is to make electrically induced discoloration or smart window.
  Electrically induced color film glass applications because of the color change on the plane of persistent and only need energy when produce change, color change materials have been used to control allow through the window (window of "smart") of the total amount of light and heat, is also applied in the automotive industry in according to the different conditions of illumination automatically adjust the depth of the rearview mirror.Viologen with titanium dioxide (TiO2) is used in the small digital display manufacturing.It is expected to replace LCD, because viologen (usually a dark blue) has high contrast with bright titanium white, therefore provides a display of high visibility.Electrically induced discoloration under electric fields of intelligent glass with light absorption through the regulatory, selectively reflect or absorb external thermal radiation and internal heat diffusion, reduce office building and civilian residential cool in summer and winter to keep warm and have to consume large amounts of energy.To improve the degree of natural light, looking at the same time.Solve the problem of modern worsening urban light pollution.Is a development direction of energy-saving building materials.Color materials has bistable performance, electricity to change color materials electrochromics does not need a backlight device, and display a static image, as long as display content don't change, will not electricity, achieve the goal of energy saving.Electrically induced color display compared with other display have ignored the blind Angle, high contrast ratio.Electricity automatic anti glare rearview mirror to change color material preparation, can through the electronic induction system, adjust the intensity of the reflected light, according to the strength of the external light to reach the role of anti glare, make driving safer.Electrically induced discoloration of smart glass at a relatively low voltage (2-5 v) and low power regulation light intensity inside the cars, planes, make the trip more comfortable.At present, electrical to change color optical glass has been applied in some luxury cars and get on the plane.