Intelligent dimming glass is a liquid crystal film sandwiched between two layers of glass (commonly known as dimming film, LC film). The film is then placed in the center of a high pressure liquid crystal furnace or PVB and then placed in a high pressure furnace. This process sticks together. In addition to privacy protection, intelligent dimming glass also has all the application functions of safety glass.
Dimming glass is a new type of special photoelectric glass product. It combines TFT liquid crystal film into two layers of glass and laminates it through high temperature and high pressure. The user controls the transparency and opacity of the glass by controlling the current on and off. Glass itself not only has all the characteristics of safety glass, but also has the function of privacy protection, which can control the transparency of glass. Due to the characteristics of liquid crystal film interlayer, dimming glass can also be used as projection screen instead of ordinary screen to present high-definition image on glass.
1、 Size limit
1800mm * 3500mm is almost the maximum size of a single dimming glass. The common glass sizes are 5mm or 6mm, commonly used are 2200 * 1650, 1830 * 2440, 2440 * 366, 8mm and 10mm: 1830 * 2440, 3660 * 2440, 2134 * 3300.
As mentioned above, although there are original sheets with a width of more than 2 meters, there is no such large dimming glass. The larger the size of dimming glass, the greater the risk of production and use. Moreover, since there is no adhesion force on the liquid crystal of the dimming glass, there may be delamination under excessive pressure. In addition, it is inconvenient to transport, transport and install large-size glass. Therefore, it is recommended to reduce the size as much as possible.
2、 Limited climate and environment
The operating temperature of dimming glass is - 20 ° to 60 ° and the temperature is too high or too low, which will affect the performance of liquid crystal film. If the dimming glass is directly exposed to the outdoor, especially in summer, when the temperature exceeds 60 ℃, the liquid crystal film will lose its activity. In some areas of northern China, the temperature is always lower than - 20 ℃ in winter, even if the power is on, the atomization film will always be in the atomization state. When it is in high or low temperature for a long time, the dimming glass will cause irreparable damage. It is not recommended to be used outdoors and in cold areas as it has a significant impact on life. When it must be used, it must be specially protected and accepted for a relatively short service life.
3、 Restrictions on installation conditions
In the installation of general glass partition, curtain wall, doors and windows do not need to be electrified, but the installation of dimming glass is required to discharge electricity, which is a great test for construction personnel. Although there is no problem in the application of partition, there are still various problems in the application of large area curtain wall. In particular, in the movable doors and windows, people who have not contacted do not know how to install them. If the line is not considered, the line is arranged outside the aluminum frame, which is not beautiful and easy to be damaged.
Now, dimming glass is more and more popular in interior decoration, and its advantages are obvious, which is the preferred choice of most customers.