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The secret longing of city daydreamers watching out their office windows at the sad brick walls of the building opposite them may soon be answered thanks to transparent light shutters developed by a group of researchers at Pusan National University in South Korea.
A novel liquid crystal technology allows displays to flip between transparent and opaque states -- hypothetically letting you shift your view in less than a millisecond from urban decay to the Chesapeake Bay.
Their work appears this week in the journal AIP Advances. The idea of transparent displays has been around for a few years, but actually generating them from conventional organic light-emitting diodes has been proven difficult. “The transparent part is constantly open to the background,” said professor Yoon Tae-Hoon, the group's primary investigator. “As a result, they exhibit poor visibility.” Light shutters, which use liquid crystals that can be interchanged between transparent and opaque states by scattering or absorbing the incident light, are one proposed solution to these obstacles, but they come with their own set of problems. While they do increase the visibility of the displays, light shutters based on scattering can't provide black color and light shutters based on absorption can't completely block the background. They aren't particularly energy-efficient either, requiring a continuous flow of power in order to maintain their transparent ‘window’ state when not in use…..
Detailed information at http://www.asianscientist.com/2015/05/in-the-lab/clear-windows-double-lcd-screens/
Related article posts at:
http://www.nanowerk.com/nanotechnology-news/newsid=39909.php
http://scitation.aip.org/content/aip/journal/adva/5/4/10.1063/1.4918277
