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Industrial LCD Monitors

How LCDs Work?

LCD(liquid crystal display) can be seen everywhere in our life. It can be said that our life today is inseparable from these advanced technologies. So we know how the content of LCD screen is presented to us, below we will give you a brief introduction to the working principle of LCD LCD screen.

1, LCD structure: LCD is short for liquid crystal display screen. The LCD screen mainly includes: back light plate, up and down polarized light, liquid crystal, glass substrate, etc.

2, color rendering principle: because the RGB three colors are printed on the color filter color piece, such as back light of light across the screen, the light through a transparent TFT thin film transistor substrate first, through the liquid crystal molecules, and then through the CF color filter, liquid crystal molecules penetrate rate under different from various colors, the influence of color piece will make different red, green, blue, light and shade In order to blend together to show the desired color.

3, liquid crystal:  liquid crystal is a kind of special substance. It is a crystal anisotropic also have liquid’s fluidity at the same time, most of the liquid crystal molecules are rod-shaped molecules, originally is the direction of different LCD, under the action of different voltage presents different optical properties, as if is the magnetic field in the metal, under the influence of external electric field, the liquid crystal molecules also received certain effect. So we just have to control the arrangement of the liquid crystal molecules so that we can control the direction of light through the liquid crystal. As shown in the picture:


4, polarizing light: the top and bottom of the LCD screen have a polarizing film, they are perpendicular to each other, under normal circumstances is not through the light, but in the middle of the 2 pieces of polarizing film added liquid crystal everything is different. The liquid crystal molecules in the drawing below are arranged in a spiral line to create a rotating light that passes through a second layer of polarizer and appears at the front of the screen.