Reducing Power Consumption of LED Screens by ...

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GRØN DYST 2014 Technical University of Denmark

Reducing Power Consumption of LED Screens by Backlight Dimming
Author:H. Bro (DTU Photonics, Technical University of Denmark, Denmark)
Date: 2014-06-27     Track: Main     Session: 1

As the world community becomes increasingly aware of the repercussions of the increased CO2 emissions, the need to tackle this dilemma on all levels of development is apparent. In modern televisions the picture is often produced by a RGB pixel plane, producing the colors and a white light plane (LED plane) producing the backlight needed to illuminate the color plane. The idea is, through smart algorithms, to decrease the need for unnecessarily high backlight for dark areas of an image, and thus gain increased power savings. This in turn results in an extended bonus by improved contrast between light and dark.