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By the end of this year, a startup called Kateeva will start shipping manufacturing equipment that could finally bring flexible displays to market.

For years, designers have conjured up images of displays that could be rolled up. In January 2013, for instance, Samsung showed off a flexible screen at the Consumer Electronics Show in Las Vegas, offering visions of smart watches with displays that wrap around your wrist, or even gadgets that can be folded up and popped in a pocket.

But these prototypes have not been durable enough to commercialize. After unveiling its flexible display prototype, Samsung reportedly ran into trouble with the material for sealing the display—the organic LEDs (OLEDs) used in the display must be protected from water vapor and oxygen. 

“Just a few molecules of oxygen or moisture can kill the display,” says Greg Raupp, an expert on display technology at Arizona State University. “So the encapsulation requirements for an OLED display are quite significant.”

Samsung has come out with curved phones that use flexible displays, but these have been fixed in place so that they can’t be bent, a format that is easier to seal. According to a statement from Samsung, the company does not have “any challenge encapsulating OLED materials” in these mass-produced phones. 

Kateeva has developed an inkjet printing process that can apply a protective coating to OLEDs far faster than previous methods. This promises to cut manufacturing costs in half, and make it possible to integrate the process into existing production lines more easily.

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