The researchers have placed what they are calling polarizing organic photovoltaics inside the LCDs in such a way that light that is normally filtered out and blocked in areas to create the displayed images can now be (mostly) recovered. While the process does not result in 100% reclamation of energy due to energy loss during the conversion process(es) and heat given off by the back-light, in a mobile device any amount of energy that can be recovered is desirable. Ars Technica states that up to 90% of a battery’s power is used to power the back-light of the display. Further, of that percentage, up to 75% is lost to the polarizing layers. By infusing the polarizing layer with photovoltaic cells and reclaiming as much of the otherwise wasted light as possible, battery life could be dramatically extended.
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