Find solution
What's the difference between LED and CCFL?

Whats the difference between LCD and LED televisions please?

  • I have the chance to buy a LCD TV with built in DVD for £139 or a LED TV on special at £135. Could somebody tell me the difference please? Thank you

  • Answer:

    LED TVs are technically a member of the LCD TV family. The display screen on a LED is a liquid crystal display the same as it is on any other LCD TV. The main difference between the two lies with different backlighting techniques which may change the picture quality characteristics dramatically. Traditional LCDs have used some form of flourescent lighting from tubes to much more advanced flat arrays of lights. LED TVs use Light Emitting Diodes to light the LCD panel. Just as there are different styles of flourescent lights in traditional LCDs there are also different styles of LED backlighting. There are LED TVs like the Sony KDL-55XBR8 (see review) that have a panel of LED lights behind the LCD panel. In the Sony the LEDs are tri-colored and can be controlled in banks for an effect called "local dimming". This allows darker areas of the picture to have the backlighting dimmed behind them resulting in better contrast and black levels. In the Luxia line of Samsung LED TVs, the LED lights are surrounding the edge of the panel and this arrangement allows for the very slim depth of those models. Without the ability to do local dimming these are functionally similar to traditional LCDs so in this article we will be comparing local dimming LED TV to traditional LCD TV. PICTURE CONSIDERATIONS CONTRAST / BLACK LEVELS Traditional LCD televisions always have their backlight on when the TV is on. To create black or dark areas the screen must block the light by twisting the crystals to a closed position, often resulting in a lower contrast ratio and less detail in dark areas of the picture. This is a shortcoming in LCD technology that LED TVs with local dimming are attempting to correct. With the controlled backlighting the LEDs can be dimmed in dark areas of the picture to create darker blacks and better detail in dark scenes. ADVANTAGE: Local dimming LED TV technology has a clear advantage in contrast and black levels. COLOR ACCURACY With white LED backlights the difference between the two technologies isn't very significant, but with RGB colored lights or a color wheel to affect the backlight color the LED TVs have an advantage in displaying realistic color. ADVANTAGE: Without colored LEDs or another way to affect the backlight color these two technologies are nearly equal. With colored backlighting LED takes the advantage. VIEWING ANGLES While traditional LCDs have improved their useable viewing angles over the years this is still a shortcoming of the technology itself and even the best LCDs will suffer from contrast degradation when viewed from angles wider than around 30 degrees off center. The LED backlit LCDs we've seen have done a fantastic job of correcting this issue and have viewing angles that rival plasma TVs (but at a much higher price). ADVANTAGE: LED TV FUNCTIONAL CONSIDERATIONS COMPUTER USE LCD technology of either sort is immune to screen burn-in so they are equally well suited for computer use. ADVANTAGE: Even. FAST-MOVING VIDEO PLAYBACK Displaying fast moving video is a function of the response time and refresh rate in LCD and LED televisions. The type of backlighting in the TV has no effect on the reproduction of fast moving video. You will want to compare response times and refresh rates when making a purchase decision. ADVANTAGE: Even LONGEVITY Most manufacturers are claiming approximately 100,000 hours lifetime for their televisions. LED backlit televisions are brand new and don't have much of a track record but LED lights are typically long lived. ADVANTAGE: LED televisions do not have much history. They should have an advantage since the flourescent style backlighting used in traditional LCDs ever so slightly change color hue over time. Light emitting diode technology should not have as much degradation over time. Quality of manufacture for either technology will also matter. For more info just go on:

JPP4AY7YHZ44JFHUUFB2YBJVYM at Yahoo! Answers Visit the source

Was this solution helpful to you?

Other answers

I have a 40" lcd sony bravia and a 48" led samsung and i have to z the led is so much better on every level.imagine a black and white tv,then the changeover to colour tv how good that was.well thats what its like here from a lcd to led. Get led its the new thing!!!!

nscona

one's a liquid crystal display.. the other's produced by a light emitting diode. either or are good.. just stay away from the lesser known brands.

finger pickin' good

There are a lot of things to get confused about when buying a new TV, but few topics have bewildered consumers as much as the use of LED technology. If I had my say, the phrase LED TV would be banned from future discussions because consumer-grade LED sets are simply a different type of LCD TV. Baffled? Don’t be. Every LCD TV requires a source to illuminate its pixels, and in so called LED TVs, that source is a series of LEDs. In other LCD sets, the source is usually a series of fluorescent tubes. Manufacturers make a big deal out of LED backlighting because LCD sets using the technology are generally more energy efficient. There are other benefits as well, but to understand them we must take a closer look at the implementation of LED backlighting. Currently, LED-backlit LCD TVs use one of two systems. •Edge-lit: LEDs are placed along the edges of the LCD panel •Full array: Rows of LEDs are placed behind the entirety of the LCD panel Which is Better? Edge-lit or Full Array? Each system has advantages and disadvantages, and the one that’s right for you depends on your needs and desires. Edge-lit sets are typically much thinner and lighter than those that use a full array because the lighting source takes up less space. Full-array sets are thicker and heavier, but they make up for that with local dimming, which means one section of the LED panel can be dimmed while other sections remain bright. That improves blacks and contrast in the resulting picture. In short, sets that use full-array backlighting tend to produce the best picture of all LCD TVs. Those that use edge lighting sacrifice picture quality but are the lightest and thinnest TVs on the market. Is LED Worth It? Before you run out and buy an LCD TV with LED backlighting, you should consider one important factor – price. LED-backlit TVs are great, but they’re still more expensive than their fluorescent-lit peers. If picture quality is extremely important to you, I suggest spending a little more money to enjoy the benefits of full-array LED backlighting. If you’re willing to pay a premium to have the thinnest TV on the block, edge-lit is the way to go. If, on the other hand, you’re a bargain shopper, you will probably be able to satisfy yourself – and your wallet – with a well-made fluorescent-lit set.

Mr.Y\A Funeral Undertaker

LCD stands for liquid crystal display. LED stands for light emitting diode. I may be wrong on this but I do believe that LCD screens are capable of higher resolution while LED screens use less power. here is what I would do. compare the picture quality of both look at max resolution of both do some reading on Wikipedia about the differences

Stirfriedsushi

Related Q & A:

Just Added Q & A:

Find solution

For every problem there is a solution! Proved by Solucija.

  • Got an issue and looking for advice?

  • Ask Solucija to search every corner of the Web for help.

  • Get workable solutions and helpful tips in a moment.

Just ask Solucija about an issue you face and immediately get a list of ready solutions, answers and tips from other Internet users. We always provide the most suitable and complete answer to your question at the top, along with a few good alternatives below.