Paint-on displays get closer to reality

3:16pm, May 28, 2002

A new way to make electronic displays–like the ones in digital watches, cell phones, and laptop computers–may lead to changeable screens that can be painted onto walls and fabric.

In current electronic-display technology, two thin glass plates typically sandwich a layer of liquid crystal, whose constituent molecules align in one direction until a change in an electric field causes them to pivot. Those changes of orientation alter the flow of light through the device, generating an image.

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