Last week, news of a display technology demonstration from Samsung Electronics was reported in Nature Photonics. This is a thin film technology based on “quantum dots“, and was built on a flexible substrate. This approach is quite different from OLED technology; the nanoparticles emit light when excited by an electrical charge, and the color of the light is limited to a narrow range of the spectrum. By using particles of specific sizes that emit specific colors, you can create a stable display with excellent color performance. One of the achievements covered in the report is a method of transferring stripes of the quantum dot material to an active matrix backplane.
According to some sources, these displays have the potential to be far more energy efficient than even OLEDs. On the other hand, this is still very much at the laboratory stage. The materials only have about a 10,000 hour life to half brightness (compared with 60,000 hours or more for plasma and LCD flat panels), and we’re still a long way off from even pilot production of quantum dot displays. But now we have another technology to track.