Smart Glass is a new type of special photoelectric glass product with a sandwich structure in which a liquid crystal film is compounded between two layers of glass and bonded together by high temperature and high pressure. The user controls the transparent and opaque state of the glass by controlling whether the current is on or off. The glass itself not only has all the characteristics of safety glass, but also has the privacy protection function of controlling the transparency of the glass. Due to the characteristics of the liquid crystal film interlayer, Smart Glass can also be used as a projection screen, replacing the ordinary screen, presenting high-definition images on the glass .

Smart Glass was invented and applied for invention patents by researchers from Kent State University in the late 1980s. In China, people are used to calling Smart Glass as intelligent electronically controlled dimming glass, intelligent glass, liquid crystal glass, electronically controlled glass, color-changing glass, PDLC glass, magic glass and other names.

Smart Glass began to enter the domestic market in 2003. Due to the high price and few people who know it, the development in China has been slow in the next decade. With the sustained high-speed growth of the national economy and the rapid development of the domestic building materials market, Smart Glass has gradually been accepted by the construction and design industry and began to be applied on a large scale due to a lot of cost reductions. Light glass has also begun to enter the field of home decoration applications, I believe that in the near future, this practical high-tech products will enter thousands of households.