Led Lcd Monitors
The first LED-backlit LCD monitors were launched in 2005-2007 and suffered many improvements since then.
Samsung first released a LED-backlit monitor, the SyncMaster XL20, in November 2007. It was based on white LED back lighting combined with the basically same LCD technology that was used with fluorescent back lighting. The main advantage of using LEDs is that they produce a much clearer white, so better colors can be mixed. While standard LCDs could reproduce only around 80% of NTSC standards, Samsung XL20 went as far as 114%, exceptional realistic colors.
At the time of launch the asking price was $2500.
Today LED-backlit LCD monitors are used in everything from laptops to TVs, not only because they have much better colors, but power consumption also went down by up to 75% compared to a standard LCD.
The cheapest LED-backlit LCD monitors cost around $130, for example the ASUS VH198T 19” monitor:
Thanks to this new technology dynamic contrast ratio was increased to 10 million to one, the number of colors remained 16.7 million, 5ms response time and 1440 x 900 resolution. Power consumption has decreased below 25Watts from a typical 40-50Watts in the 19” category. This model has both D-sub and DVI inputs and integrated speaker, so this is why power consumption wasn’t reduced even more.
Viewsonic managed to reduce power consumption down to 15Watts (typical) on its 19” LCD:
The ViewSonic VX1932wm-LED monitor costs $160 on newegg.com and offers the same contrast ratio, inputs, integrated speakers and response time as the previous ASUS. You pay the extra $30 for the lower power consumption, but as a consequence the monitor will live longer.
MAG, a less known manufacturer offers a 21.5” FullHD LED-backlit LCD monitor for only $170:
It seem that MAG GML2226 too has the same specifications except the resolution, which is a bit odd. Usually LCD panels of different sizes have at least slightly different characteristics. This one lacks integrated speakers and power consumption is not above average, 36Watts.
Once again Viewsonic has to shows us how it’s done:
Viewsonic VX2250wm-LED is a 21.5” FullHD monitor with D-sub and DVI inputs, and also with integrated speakers. Power consumption however is only 26Watts and it reflects only slightly in price, newegg.com sell it for $190. Now let’s look at a masterpiece, a LED-backlit LCD monitor that has balanced parameters to meet all needs:
The Acer S243HLbmi costs $289 on newegg.com and offers a 8 million to one dynamic contrast ratio, stereo built-in speakers and both D-sub and DVI inputs, all this without sacrificing precious power. Typical power consumption is only 17Watts which is absolutely incredible for such a huge (24”) FullHD screen. In my opinion this is the single best 24” LED-backlit LCD that’s worth buying (at the time of writing).
Bigger LCDs still consume too much power, while they don’t offer anything in return, maybe just a bigger image size. Sharp recently introduced some FullHD 32” LED-backlit LCD-TVs, but power consumption is around 80Watts (55Watt typical), too much for a 8” diagonal increase, and let’s not forget that its price is also too high, around $800 at newegg.com.
Written by Karpat Zoltan, date May 31, 2010 in LCD Monitos
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