LCD vs LED display comparison
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LED and Liquid Crystal Display – what’s the difference? It’s a question we hear plenty from budding home theatre consumers. Blame the acronyms. While yesterday’s customers needed to make an easy option between CRT and rear-projection tv sets, today’s consumers are confronted by plasma, Liquid Crystal Display, DLP, OLED, and laser tvs. Now, the age-old term LED happens to be stirred into the blend. Let’s see exactly what those three miracle letters mean, how they affect tvs, and why you might want to think about purchasing one.
a LED TV is A LCD TV
Despite having another acronym, a Light-emitting Diode television is just another style of LCD TV. The proper title would really be “LED-backlit LCD TV, ” but that’s an excessive amount of a mouthful for each day discussion, so individuals typically simply make reference to all of them as LED TV’s, which can cause confusion.
Both forms of TV use a liquid crystal screen (LCD) panel to control where light is displayed in your screen. These panels are generally made up of two sheets of polarizing product with a liquid crystal answer between them, then when a power present passes through fluid, it triggers the crystals to align so that light can (or can’t) pass through. Consider each crystal as a shutter, either enabling light to feed or blocking it.
Now, since both Light-emitting Diode and Liquid Crystal Display TV’s make use of LCD technology, you’re most likely wondering just what the difference is. The clear answer? Backlighting. Ordinary Liquid Crystal Display TV’s make use of cold cathode fluorescent lights (CCFL’s) to deliver backlighting, whereas Light-emitting Diode TV’s use numerous smaller, more efficient light emitting diodes (LED’s) to illuminate the display, which gives all of them various advantages.
The advantages of LED backlighting
LED TV’s carry numerous benefits over regular LCD TV’s with CCFL backlighting. To begin with, LED’s are dramatically smaller than CCFL tubes, which means that LED TV’s is made much slimmer. Nowadays, many TV’s that measure under an inch thick are manufactured with LED because they add almost no level on display profile.
LED’s additionally eat much less energy than their CCFL alternatives, although most significant difference between both is an element called neighborhood dimming – a discerning lighting effects method that enables for much deeper blacks and much better total photo.
The difficulty with CCFL backlighting is that fluorescent pipes must light the complete display uniformly, therefore manufacturers haven't any method to vary the backlighting intensity in various parts of the display. Even although you like to show an individual white pixel on an all-black display screen, the light in the back needs to be blazing away at full brightness. LED TV’s provide a solution for this with regional dimming. The theory behind this technique is manage the output for the LEDs in order that, in place of be on at full brightness all the time, they could be dimmed or deterred entirely.