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Samsung patents flexible display device concepts
In Q2 2011 Samsung submitted a patent application that describes devices with flexible displays. This patent is now public, and it shows several concepts: A "pen" type device that has a stretchable screen, a bracelet type device and a book like device that can open up.
According to the patent, all sorts of displays may be used to power such a display: including e-paper, LCd and of course OLEDs. Flexible OLEDs are coming in 2012 from Samsung, but don't expect such bendable displays yet. The 2012 crop will be plastic-based displays that will be shatterproof, light and thin - but not bendable...
Personally none of these concept devices seem really new or innovative. UDC has been showing an OLED pen concept about 8 years ago and bracelet OLEDs have been around for ages. But I'm not a patent lawyer, and perhaps Samsung is showing some innovation in the details of these concepts.