LCD screens are indeed LCD screens.
The core component of LCD (Liquid Crystal Display) is liquid crystal. Liquid crystal is a special substance that lies between solid and liquid states, possessing unique optical properties. In LCD screens, liquid crystal molecules are placed between two layers of transparent electrodes.
In terms of working principle, LCD screens change the arrangement of liquid crystal molecules by controlling the electric field applied to them. When the electric field changes, the orientation of liquid crystal molecules changes, thereby controlling the transmittance of light. And these lights are provided by the backlight behind the screen, and the light emitted by the backlight is modulated by the liquid crystal layer to form the image we see on the screen.
Structurally, LCD screens typically include components such as backlight, light guide plate, polarizing plate, liquid crystal layer, color filter, etc. These components work together to enable liquid crystal molecules to effectively control light based on input electrical signals.
In practical applications, LCD screens are widely used in various fields, such as televisions, computer monitors, mobile phone screens, car displays, etc. It has various types, such as TN LCD (Twisted Nematic LCD), IPS LCD (In Plane Switching LCD), VA LCD (Vertical Alignment LCD), etc. These different types of LCD screens have different characteristics in terms of viewing angle, response time, contrast, etc., but they are all based on the principle of liquid crystal to achieve image display.
