Finnish flexible electronic devices on a roll
VTT Technical Research Centre of Finland has, for the first time, performed all of the manufacturing stages for a flexible in-moulded LED foil in a roll-to-roll process.
The demo thus proves the suitability of the technique for the highly cost-effective manufacture of small-sized, easy-to-use products, such as flexible LED displays containing printed electronics.
“For the wristband demo, we performed all of the key manufacturing stages for printed hybrid systems – the printing of conductors, the assembly of semiconductor LEDs and the overmolding – using the roll-to-roll technique,” says Sami Ihme, senior scientist.
The results were promising. In the first test run for the overmolding of 186 LEDs, a 100 per cent yield was achieved.