'Greener,' low-cost transistor heralds advance in flexible electronics

As tech company LG demonstrated this summer with the unveiling of its 18-inch flexible screen, the next generation of roll-up displays is tantalizingly close. Researchers are now reporting a new, inexpensive and simple way to make transparent, flexible transistors -- the building blocks of electronics -- that could help bring roll-up smartphones with see-through displays and other bendable gadgets to consumers in just a few years.

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