What's the difference between TFT screen and LED screen?
Author:Xu Min Time:2021-06-18 12:29 Browse(890)
TFT is also known as the LCD panel
TFT is also known as the LCD panelLED screen is also used with TFT LCD panelThe only difference is the backlightCommon TFTs usually use CCFL as backlightLEDTFT is to use white LED technology for backlightLED backlight:advantageUltra thin screen (side light emitting LED) side light, through the light guide plate to illuminate the whole screen, straight down led without this advantageInstant lighting without delayThe efficiency of LED is generally higher than 100lm / W, and CCFL is about 60-90lm / WLong life (100000 hours) only for direct down led, side LED due to poor heat dissipation, life is not longshortcomingThe color is not bright, especially the green loss is more (for white LED screen, the green spectrum of white LED is very little.
high end RGB screen or direct down LED screen has no such disadvantage.

What's the difference between TFT screen and LED screen?

it seems that sharp's direct down LED screen is 4-color enhanced, so it is recommended to buy it.)Because it's a spot light, it often has uneven brightness. When you buy a TV, you must adjust the brightness contrast to the lowest level, play the full screen white picture, and try to choose brands with uniform brightness. Now, there are no LED screens that are not availableCCFL backlight:advantageBright and true color (3-color phosphor, high-end machine, even 4-color enhanced color, color rendering 100%, white LED technology color rendering only about 80%)The price is lowScreen light uniformity is betterMature technologyshortcomingShort life (about 10000 hours)The power consumption is slightly higher and the heat is slightly higherThere is a delay in lighting, and it needs to be preheated, especially in winter (the brightness of the screen is low after turning on in cold weather, and it will rise to the normal brightness after a while, so it must be CCFL)If you think power saving and service life is more important, you can choose direct ledTFT LCD TVIf you think the picture is bright and even,Low maintenance cost, can choose traditional CCFLTFT LCD TVDon't pursue light and thin, buy side LED liquid crystal, buy absolute cup, at least nowRecently, the LED backlight is quite popular, and its performance is not good, so I insist on buying it. I suggest that by the end of this year, the price difference between LED and CCFL backlight will be basically reduced to less than 500 yuan.
OLED: Organic   light   emitting   Display.
organic light-emitting display (OLED) is a new type of mobile phone LCD, which is known as "dream display."
OLED display technology is different from the traditional LCD display mode.
it does not need backlight, uses very thin organic material coating and glass substrate, when there is current passing through, These organic materials will emit light.
and OLED display screen can be made lighter and thinner.
the viewing angle is larger, and it can significantly save power.
the OLED display screen can be made lighter and thinner   However.
although OLEDs with better technology will replace TFTs and other LCDs in the future, organic light-emitting display technology still has some defects, such as short service life and difficulty in large-scale screen   emitting   LED applications can be divided into two categories: one is led single tube applications.
including 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 screen is a display device composed of LED arrays.
it adopts low voltage scanning drive.
it has the following characteristics: low power consumption, long service life, low cost, high brightness, less faults, large viewing angle, long viewing distance, etc.
it has the advantages of low power consumption, long service life, low cost, high brightness, less faults, long viewing distance, etc  More specifically, look at this address     http://ask.so1ba.com/a/8045/18734.html references.
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