Is LED backlight screen better than LCD screen? What's good about it?
Author:HJHG Time:2021-07-29 13:35 Browse(588)
Liquid crystal itself does not emit light, can only produce color changes, need backlight to see the content of the display. Traditional notebook screens use CCFL as backlight, while LED backlight screen uses LED, which is the difference between the two.
The liquid crystal itself does not emit light, so it can only produce color changes, and the backlight is needed to see the displayed content.

Is LED backlight screen better than LCD screen? What's good about it?

traditional notebook screens use CCFL as the backlight.
while LED backlight screens use LED, which is the difference between the two.
in this paper, the design of LCD backlight screen is introduced1. The screen can be made thinner. We should pay attention to some liquid crystal displays.
we can see that there are several CCFL lamps arranged in filaments. In order to make the screen shine uniformly, we need to add some other devices, so we can't make it very thin; The backlight is different. The LED backlight itself is a planar light-emitting material, and no other devices are needed2. The picture effect is better, and the brightness of CCFL backlight screen is generally different from that around it.
at the same time, when the screen is completely black, it turns white3. The CCFL fluorescent lamp will not turn yellow and dim, just like the fluorescent lamp, it will age after a long time, so the traditional notebook screen will turn yellow and dim after two or three years, and the life of the LED backlight screen will be much longer, at least two or three timesAs we all know, fluorescent lamps need a high voltage to bombard mercury vapor.
so the power consumption of CCFL screen is high, generally 14 inch power consumption is above 20 watts.
LED is a kind of semiconductor.
working under low voltage, it has simple structure and low power consumption, which is especially conducive to the endurance of notebook.
LED is a kind of semiconductor5. More environmentally friendly CCFL lighting has a lot of mercury pollution to the environment.
harmless recycling has great difficulties.
.
LED: use of diode lamp advantages, high light source utilization rate, more energy-saving and more environmentally friendly than LCD (mercury content is lower than LCD) machine can be thin, the appearance is very fashionableLed imaging effect will be better than LCD! The color expression ability of LED is incomparable to that of LCD.
the color expression ability of LED is incomparable to that of LCDDeficiency: high costLCD: the advantage of using cold tube is that the technology is mature and the price is cheaper than ledLCD screen and LCD backlight screen is no different
.
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