efficient display Archives – The Green Optimistic green tech news, since 2008 Tue, 24 Jan 2012 19:00:25 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 New Photovoltaic Device Recovers Smartphones' Lost Screen Light https://www.greenoptimistic.com/cambridge-photovoltaic-smartphone-recover-20120124/ https://www.greenoptimistic.com/cambridge-photovoltaic-smartphone-recover-20120124/#respond Tue, 24 Jan 2012 19:00:25 +0000 https://www.greenoptimistic.com/?p=22140 Do you own a smartphone? I do. And I charge it every day, in the evening. I even have a friend who charges his iPhone two or three times a day, but he’s an extreme talker. However, great efforts are being made by scientists at the University of Cambridge toward making batteries last longer by […]

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]]> https://www.greenoptimistic.com/cambridge-photovoltaic-smartphone-recover-20120124/feed/ 0 22140 New Display Technology Uses Gratings to Control Color, Enhances Efficiency 400% https://www.greenoptimistic.com/jay-guo-display-gratings-control-color-20100902/ https://www.greenoptimistic.com/jay-guo-display-gratings-control-color-20100902/#respond Thu, 02 Sep 2010 17:34:35 +0000 https://www.greenoptimistic.com/?p=9911 LCDs have been here for quite a while, using the same technology implemented for the first time in the 1970s. It's high time someone invented a different method of displaying colors in a controlled manner, for the sake of price and energy consumption.

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