Slashing screen power consumption to boost battery life
Battery life continues to the bane of many mobile devices, particularly as with their ever-increasing size and resolution. Researchers at Imperial College London claim that their research into molecules that emit twisted light can dramatically reduce the power demand of modern screens.
According to the researchers, the backlit LCD screens used by the majority of mobile devices waste around 75% of the white light they produce by streaming it through a series of polarizing and color filters. They have demonstrated an alternative using molecules shaped like twisted corkscrews that emit “circularly polarized” light.
The Imperial College team are working on fine-tuning these molecules to emit red, green and blue light. This will allow the screen to produce full-color images without needing any additional filters, thereby eliminating that wasted energy.
The researchers say that the same corkscrew molecules can also be used to create low-energy 3D displays. This is because they could polarized light twisted in opposite directions to create two different images on the same screen. Using polarized glasses, viewers could then view a 3D image on the screen. Watch this video to hear more from the researchers about their work: http://youtu.be/wHQcTmRhL3k.