ABSTRACT
Displays and Devices .................................................................... 214 8.9.3 ECDs for Time-Temperature Integration ................................... 216 8.9.4 Electrochromic (Smart) Windows ................................................ 217 8.9.5 Cathode Ray Tubes with Variable Transmittance ..................... 218 8.9.6 Electrochromic Mirror for Automobiles for Glare Reduction ..... 218
8.10 Comparison of ECDs with Other Nonemissive Displays .................... 220 8.11 Industries Working on Electrochromic Materials and Products ......... 220 8.12 Drawback of Electrochromic Technology ............................................... 220 8.13 Conclusions and Future Prospects .......................................................... 221 References ............................................................................................................. 221
The word chromism means color change. In the modern sense, it represents change in absorption, reflection, or refraction of the material/coatings. When the color change is in the visible region (400-800 nm) of the spectrum, it is directly observable by our naked eye. However, this need not always be the case. Today, photodetectors have replaced the job of the eye, and the color change can be in ultraviolet, visible, or infrared regions. Materials that show such color change are known as chromic materials. Color change in these chromic materials is due to external stimuli such as change in temperature, illumination by light, pressure, and so on.
