the flexible PCB can be made to flap up and down, moving the LED on the end at a rapid rate. By then controlling the flashing of the LED, it’s possible to create a persistence of vision effect.

As technology improves, flexible LED screens will be used in new ways—maybe for furniture, cars, or even clothes.

A device that beams light into the eyes can improve the sight of people with a leading form of vision loss ... a U.K.-based ...