Difference Between LCD and LED Televisions
LCD vs LED Televisions
The LCD television is a flat-panel television which utilizes a Liquid Crystal Display technology. It has two layers of glass which are polarized and stuck together. The liquid crystals are held in one of the layers. These liquid crystals pass, or block the light, to produce images on the screen when the electric current passes through it.
However, the crystals do not produce their own light. The light comes from the series of fluorescent lamps at the back of the screen. There are millions of shutters arranged in a grid, which open and close to release and trap some of the light that is not needed to create images. Then each shutter is paired with a colored filter which produces a sub-pixel. These are so small, that when they combine, they create a single pixel, which appears to be a single spot of color on the screen. With the help of the fluorescent lamps, the images created by the liquid crystals become visible to the viewer.
LCD television produces high image quality. They can be made very thin, which makes them less space-consuming, and the user can hang them anywhere. This makes them appealing to buyers.
LED TV’s are actually very much like LCD TV’s. They also have a flat-screen which utilizes Liquid Crystal Display technology. The only difference is their source of light, which is at the back of the screen. The LCD TV uses fluorescent lamps, and the LED TV uses LED (Light Emitting Diodes).
There are two types of LED backlighting. One is referred to as Edge lighting, and the other is called Full-Array lighting. With the Edge lighting, the series of diodes are arranged along the outside edges of the screen. When there is power, the light is distributed across the screen. Alternatively, in Full-Array lighting, there are several rows of diodes behind the entire surface of the screen. They provide more control over brightness and dimming, because the diodes can be turned on and off independently.
LED TV’s are LCD TV’s with a new backlight system. They are newly developed for LCD’s, because Light Emitting Diodes are said to give more balance in color saturation, and use less power than the fluorescent lamps. LED TV’s are the newest version, and that’s why they are currently more expensive than the standard LCD TV’s.
Summary:
LED TV’s are still LCD TV’s. They are just considered to be the newer LCD TV version because of the new backlight system used. The LED TV uses Light Emitting Diodes, while the standard LCD TV uses fluorescent lamps. Although they both still use Liquid Crystal Display technology. The main difference is the part behind their screen, which is the backlight.
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thanks for the info. very informative article. i was planning to replace my old 21″ CRT and was confused what to buy.now i know what’s the difference of LED and LCD and PLASMA tv’s and i can now make a better choice.
Thanx a lot for the article i want to know which one is more energy efficient LCD or LED TV?
LED
You must be a woman!
Good article. informative
Good Info. I’ve always wondered why LED TV’s are so high in Price. Guess i’m gonna buy a 42″ from the Holiday season pocket money.
This is, by far, the most clear and understandable explanation of the difference between LCD and LED I have found. Thank you so much.
Good article for those confused by marketing misinformation.
One thing you could mention though is true LED displays like AMOLED or just OLED (orgranic LED) that are being developed. Each pixel is (or can be) an individual LED, thus producing its own light.
Of course if you had a cheap OLED, single color (white) display behind a standard LCD display and therefore used it for backlighting, you could call it an “OLED” TV, but that’d be a bit decieving as well
I have a LCD and have had to replace the flouerscent lamp 3 times (very expensive). Does the LED tv’s have anything that has to be replaced like that?
Thnx for the information
Very helpful
really helpful
nice explation
Thanx for the information. It is really helpful.
After going through the information,i concluded that there is nt much advantage of LED over LCD.
We have samsung LED tv and sony LCD,when we compared the clarity of both the tv’s i found that LCD is more clear, both are on cable network, why?????????????
hhey dude ive also hv samsun smart tv ……. [ led 3d full hd ] … you know …led are 10x bettr thn lcd thats why they are more costly… and 1 thing led tvs are best in quality u hv to use a digital connection thn u see the real diffrence …. since lcd are of low capability they show better in cable connection …. 1 fact u already knw when u use crt tv in cable it shows the best no pixelisation so the series and generation matters ….. suppose apke paas ek cycle h aur ek luna … ap dono ko paddle se chala sakte hai par apko luna me dikkat to ayegi hi na…. agar ap use petrol se chalaenge to apko kitna achcha hoga vaise hi digital connectiona r a standard for ur led tv ….. bye …………………………
This is a useful blog.. Thanks.
Thanks a lot
good good good
This information is very useful bcoz i have just purchased a LED Monitor and I was confused about why LED so expensive than LCD. This artical has given me right information with description. Thanks
Thanks a lot info…
i want to know what changes occur on changing position watching LED and LCD TV
Those Marketers have really confused people. The display you’re referring to is actually a LED backlit LCD Television. I see many LED backlit LCD Televisions marketed as LED displays or LED TV’s. They are not, this is a lie, really. It’s a manipulation to get people interested in old technology and confused as to what they are buying. That said, LED backlit TV’s are still better than fluorescent backlit TV’s as LEDs are more efficient and resilient light source than fluorescent tubes and don’t contain the mercury vapor, but they are not LED displays.
True LED displays (Just because of Marketing, now we have to say ‘True’, how stupid) do not need a backlight because each pixel is a light source.
http://en.wikipedia.org/wiki/LED_display
http://en.wikipedia.org/wiki/LED-backlit_LCD_television
LED’s are more efficient, cleaner and last longer than fluorescent tubes, they are the next generation in home lighting, BTW…
REALY HELPFULL ARTICLE.I WOULD SAY LED IS BEST
actually when i gone to reliance digital shop in hubli i found huge difference btwn lcd and led tv’s now i got the thing by reading this page ……thanks 4 sharing
which is good led or lcd?
thank you verrry much for the inofrmation
especially the movie
that was great
now i know what to buy
keep up the work
Thanks for the msage l will buy the LED TV
Real good and too the point article! Appreciate it, thanks,
thanks for the info.. I’m working in appliance center but still confuse and hard to explain bout the diff. of LED and LCD TV…i thank u, it will helping me to explain more easy to the customers..
Magnificent web site. A lot of useful information here.
I’m sending it to a few pals ans additionally sharing in delicious. And obviously, thanks for your effort!
explained in very neat and simple manner which was very easy to understand.
Real good…..Appreciate!!!
Thanks for the Info. So that’s why. I bought an Sony LED TV last month and I was surprised in manual it was an LCD TV. I thought i was fooled but now it is making sense LED TV are LCD TV with LED backlights.
Good article with great explanation. Thanks for sharing information.
Thanks……..the explanation is awesome:-)
very nice and satisfactory explanation.
Thanks !
very useful . once again thanks !
now i know… thanks for d’ info.