A new revolutionary research was published on Science Advances: the researchers of theUniversity of Minnesota Twin Cities they used a 3D printer to print a display OLED (Organic Light Emitting Diode) flexible. The discovery could lead to low-cost OLED displays in the future that could be widely produced using 3D printers by anyone at home.
OLED display technology is based on the conversion of electricity into light using a layer of organic material. OLEDs function as high-quality digital displays, which can be made flexible and used both in large-scale devices such as television screens and monitors, as well as in portable electronic devices such as smartphones. OLED displays have gained popularity because they are lightweight, energy efficient, thin and flexible, and offer a wide viewing angle and high contrast ratio.
“OLED displays are generally produced in very large and expensive factoriesSaid Michael McAlpine, head professor of the Kuhrmeyer family at the University of Minnesota in the Department of Mechanical Engineering and senior author of the study. “We wanted to see if it was possible to print an OLED display on our desktop 3D printer, which was custom built and cost about the same as a Tesla Model S.”
Other research groups have partially printed displays, but Prof. McAlpine has now combined two different print modes to print the 6 layers of the device which have produced a flexible, fully 3D printed organic light emitting diode display. The electrodes, interconnects, insulation and encapsulation were all printed by extrusion, while the active layers were spray printed using the same 3D printer at room temperature. The prototype display is about 1.5 inches on each side with 64 pixels. Each pixel worked and displayed light.
The researchers said the next steps are 3D printing OLED displays with higher resolution and improved brightness.
Below is a video presentation of the project:
Source: Il Blog di Beppe Grillo by beppegrillo.it.
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