What is the difference between TV TFT screen and LED screen
Author:Cao Minghua Time:2021-06-08 13:34 Browse(277)
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 backlightLed TFT 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.

What is the difference between TV TFT screen and LED screen

high end RGB screen or direct down LED screen has no such disadvantage.
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 are important,Direct down led TFT LCD TV can be purchasedIf you think the picture is bright, the brightness is uniform, and the maintenance cost is low, you can choose the traditional CCFL TFT 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. I insist on buying it. It is suggested that by the end of this year, the price difference between LED and CCFL backlight will be basically reduced to less than 500 yuan.
the material of the inner screen is different.
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