LG is currently the proud recipient of the 2011 Energy Star Most Efficient award for its 144-watt 47LW5700 LED TV, and it appears the company is loath to lose that distinction in 2012 — it claims to have made a 47-inch LCD TV panel that draws just 28 watts of power, making it the world's most efficient. The reduction in energy usage comes from placing an LED backlight along just a single edge of the panel rather than all four; a special three-layer film is used to diffuse and focus that light across the entire display. LG claims 400 nits of brightness while the panel itself draws less power than a 40-inch LCD panel or 20-inch PC monitor; according to data gathered by CNET, it's not unusual for a 40 to 50-inch LCD TV with all its other electronics to pull nearly 200 watts. With the revised Energy Star 5.3 going into effect just 10 days ago setting a hard limit at 108 watts of total power draw and 6.0 set to lower the limit to 85 watts next fall, this new panel might be just in time.
LG claims most efficient 47-inch LCD TV panel
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