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Configuration of TFT LCD Display.


Configuration of TFT LCD Display

In terms of the LCD structure, the LCD panel consists of two parallel glass panels, about 1mm thick, separated by a uniform interval of 5μm containing liquid crystal materials Because the liquid crystal material itself does not emit light, so on both sides of the display screen is provided as a light source tube, and on the back of the LCD screen is a backlight plate (or uniform light plate) and reflective film, backlight plate is composed of fluorescent substances can emit light, its role is mainly to provide uniform background light source The light from the backlit plate passes through the first polarization filter and then enters a liquid crystal layer that contains thousands of liquid crystal droplets that are contained in tiny cell structures, one or more cells that make up a pixel on the screen Between the glass plate and the liquid crystal material are transparent electrodes, which are divided into rows and columns. At the crossing points of the rows and columns, the optical rotation state of the liquid crystal is changed by changing the voltage. The function of the liquid crystal material is similar to a small light valve When electrodes in the LCD generate an electric field, liquid crystal molecules distort the light that passes through them in a regular way, which is then filtered through a second filter layer and displayed on the screen.