What is the difference between LED screen and LED backlight screen
Author:Yao Wanyuan Time:2021-06-09 12:29 Browse(655)
The back of LCD
A light source is needed at the back of the LCD screen to illuminate the screen.

What is the difference between LED screen and LED backlight screen

the LCD screen needs to be illuminated by a light sourceAt present, most laptops use CCFLThe physical characteristics of cold cathode fluorescent lamp (CCFL).
determine the limitations of its panel in color display and low energy efficiency, which need high voltage AC drive,The requirements for the power transformer rectifier group are relatively complex, and the service life is not longAfter several years of use, many LCD products will have a yellow screen and a significantly dimmed brightnessUsing white LED instead of CCFT as backlight of notebook display
is to reduce the power consumption of laptop display screen and enhance the environmental protection.
is to reduce the power consumption of laptop display screen and enhance the environmental protectionLED is the abbreviation of light emitting diodeIt's made of thin layers of doped semiconductors, one with excess electrons,The other layer lacks electrons and forms a positively charged "hole". When the current passes through, the electrons and holes are combined with each other, and the excess energy is released in the form of light radiation.
in the second layer, the electrons and holes are combined with each otherCompared with the existing CCFT technology,
LED technology has a lot of advantagesThe brightness uniformity of the screen is better, and the color expression is stronger.
the color uniformity of the screen is betterLED backlight panel has a considerable development space in notebook panel.
it is mainly aimed at the thickness and weight requirements of some notebook market segments.
LED backlight panel has a great development space in notebook panelHowever, the LED backlight panel does not need light tubes.
therefore, the thickness of the light guide plate is greatly reduced, and the thickness of the whole backlight panel can be reduced by about half.
the thickness of the LED backlight panel can be reduced by about halfThe advantage of LED backlight board is its thinness.
lightweight,No converter, mercury free and power saving are needed.
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there are essential differences.
there are many advantagesLED backlight is only the backlight of LED used in LCD screen.
and LED screen (OLED) uses LED as the pixel to display the image.
so it is fundamentally different.
at present, there is no OLED computer display in the market.
it is only used in small screen display, such as MP4 display, mobile phone display,... And so on.
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there is no OLED computer display in the market
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