What's the difference between LCD and LED screen? How to distinguish?
Author:Wang Zhixiang Time:2021-07-05 10:16 Browse(592)
Usually our laptop is CCFL (cold cathode fluorescent tube) backlit LCD (liquid crystal)
Usually our laptop is CCFL (cold cathode fluorescent tube) backlit LCD (liquid crystal)So we usually refer to CCFL backlit LCD as LCD, while the new generation of LDE backlit LCD is referred to as LED.
the concept is a little around.
I hope you can read the following slowly.

What's the difference between LCD and LED screen? How to distinguish?

I hope you can read the followingThe LCD with LDE backlight is thinner than that with CCFL backlight2. The power consumption of LCD with LDE backlight is 99% higher than that with CCFL backlight.
the electro-optic conversion of LCD with CCFL backlight is 90%3. The brightness of LCD with LDE backlight is higher than that of LCD with CCFL backlight.
LCD with LDE backlight can be viewed in the sun.
while LCD with traditional CCFL backlight has lower brightness.
LCD with LDE backlight can not be viewed in the sun.
LCD with traditional CCFL backlight can not be viewed in the sun.
LCD with LDE backlight can be viewed in the sun4. The LCD color of LDE backlight is relatively bright.
the color gamut can reach 118%.
the LCD color gamut of CCFL backlight is only 78%.
identification method:Generally, you can't tell whether it's CCFL backlight or LED backlight.
but if you put it in the sun, you can see.
the LCD brightness of the LED backlight is relatively high.
it depends on whether the business will let you take your notebook to the sun outside the mall for inspection.
this is the caseIn addition.
in order to save cost, some manufacturers now use the last generation of abrasive tools.
even the LDE backlight is similar to the original oneCCFL backlight is as thick as LCD.
it can't be seen in appearance.
.
LED is the abbreviation of light emitting diode.
LED applications can be divided into two categories: one is led single tube applications.
the other is led single tube applicationsIncluding backlight LED, infrared LED, etc; At present, there is still a certain gap between China and the world in the manufacturing of LED basic materials, but as far as LED display is concerned, China's design and production technology level is basically in line with the international level.
LED display is a display device composed of LED arrays.
it uses low voltage scanning drive.
it has the following advantages: low power consumption, long service life, low cost, low cost, low cost, low cost, low cost, low cost, low cost, low cost, low cost, low cost and low cost The original text of LCD is liquid crystal display.
it is composed of the first letter of each word, which is often called "liquid crystal flat panel display" or "liquid crystal display" in Chinese.
its working principle is to use the physical characteristics of liquid crystal: the arrangement becomes orderly when power is on.
it makes light easy to pass through; The advantages of LCD are: compared with CRT display.
the advantages of LCD mainly include zero radiation, low power consumption, small heat dissipation, small volume, accurate image restoration, sharp character display, etc.
choose and buy LCD.
there are several basic indicators: high brightness: the higher the brightness value, the higher the brightness value, The brightness unit is CD / m2.
that is, candlelight per square meter.
the brightness value of low-level LCD is as low as 150 CD / m2, while that of high-level display is as high as 250 CD / m2.
high contrast: the higher the contrast is, the brighter the color is.
on the contrary.
the lower the contrast is, the poorer the color is, The image will also become flat.
The difference of contrast value is quite large.
there are as low as 100:1, and as high as 600:1, or even higher.
.
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the difference of contrast value is quite large
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