Reducing light wastage key to making energy efficient LCD displays

August 5th, 2008 - 2:13 pm ICT by ANI  

London, August 5 (ANI): University of Cincinnati researchers have devised a new way to improve the efficiency of traditional LCD panels by preventing a huge part of the light generated in the display from getting wasted.

Jason Heikenfeld, a university expert, says that his teams approach uses ultraviolet light and liquid lenses.

He has revealed that the display is made from pixels of red, blue and green phosphorescent materials that emit photons when zapped with ultraviolet light.

This is channelled onto the pixels by tiny “waveguides”, he adds.

The researcher says that a liquid lens behind each pixel a drop of liquid that changes its focus under the influence of electricity controls whether UV light reaches the phosphorescent pixel to control its brightness.

While only 10 per cent of the light produced inside a traditional LCD panel ever reaches a viewer’’s eyes, Heikenfield insists that his approach could ensure that less than 50 per cent of the light generated in the display is wasted.

He says that this may lead to a vast improvement on traditional LCD panel efficiency, reports New Scientist magazine.

Heikenfield, however, concedes that it still remains to be seen whether the new approach could match LCD performance in other ways, such as refresh rate or colour accuracy.

The researcher suggest that the idea could first be used in static signs like adverts or public displays, which need to be illuminated at low cost for long periods of time. (ANI)

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