Active-matrix organic light-emitting diode display on human skin

The development of electronic applications can take on many new forms to include foldable and wearable displays to monitor human health and act as medical robots. Such devices rely on organic-light emitting diodes (OLEDs) for optimization. However, it is still challenging to develop semiconducting materials with high mechanical flexibility due to their restricted use in conventional electronic formats. In a new report on Science Advances, Minwoo Choi and a team of scientists in Electronic Engineering and Materials Science in the Republic of Korea, developed a wearable, full-colour OLED display using a two-dimensional (2-D) material-based backplane transistor. They engineered an 18-by-18 thin-film transistor array on a thin molybdenum disulfide (MoS2) film and transferred it to an aluminium oxide (Al2O3)/polyethylene terephthalate (PET) surface. Choi et al. then deposited red, green and blue OLED pixels on the device surface and observed excellent mechanical and electrical properties of the 2-D material. The surface could drive circuits to control the OLED pixels to form an ultrathin, wearable device.

from Phys.org - latest science and technology news stories https://ift.tt/2CxX76T