The working principle of LCD screen
is to use the physical characteristics of liquid crystal to conduct when energized, so that the arrangement of liquid crystal becomes orderly and light can easily pass through;
When power is not applied, the arrangement becomes chaotic, preventing light from passing through.
The following is a description of the characteristics of LCD screens: now very common displays.
It has the advantages of small volume, light weight, power saving, low radiation, easy carrying and the like. LCD (LCD)Principle and cathode ray tube display (CRT)Very different.
LCD is a display device based on liquid crystal electro-optic effect. A character Segment Display device including a segment display mode;
Character, graphics and image display devices in Matrix Display mode;
Large-screen LCD projection TV LCD screen with matrix display mode, etc. 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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