LCD display is a kind of display using liquid crystal as material.
Liquid crystals are organic compounds between solid and liquid.
Heating it will turn into a transparent liquid state, which will become a crystalline turbid solid state after cooling.
Under the action of electric field, liquid crystal molecules will change in arrangement, thus affecting the change of light passing through them. This change of light can be expressed as a change of light and shade through the action of polarizer.
In this way, people finally control the light and shade changes of light by controlling the electric field, thus achieving the purpose of displaying images.
Compared with the traditional CRT, LCD display is not only small in size, thin in thickness, light in weight, low in energy consumption and low in working voltage (1. 5 to 6 V)
And has no radiation, no flicker and can be directly matched with CMOS integrated circuits. (1)
The body is thin and saves space. Compared with the relatively heavy CRT display, the LCD only needs 1/3 of the space of the former. (2)
Power saving, no high temperature, it is a low power consumption product, can be completely free of heat (
The main power consumption and heating part exist in the backlight tube or LED)
However, CRT displays inevitably generate high temperatures due to imaging technology. (3)
Low radiation, good health, LCD radiation is much lower than CRT display (
Just low, not completely without radiation, electronic products have more or less radiation)
This is a good news for people who work in front of computers all day. (4)
The picture is soft and does not hurt the eyes. Unlike CRT technology, the LCD screen
does not flash, which can reduce the damage of the display to the eyes, and the eyes are not easy to fatigue.
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