Sony Wraps Flexible OLED Screen Around Pencil for Demonstration
Source/Type:  LIGHTimes Online - News - Staff reports

June 4, 2010... Sony demonstrated a new prototype OLED screen by showing it working while being wrapped around a pencil several times. The technology for the screen is based on a new kind of organic thin-film transistor (OTFT) that uses a new semiconducting material with eight times the current modulation rate of existing OTFTs, according to a Fast Company article This makes the display powerful. Additionally, in an impressive design feat, the display driver's technology is built entirely out of OTFTs themselves instead of using conventional solid chips in black plastic. The display drivers are integrated into the actual panel the display itself is made on. All of the electronics was fabricated on a a super-thin (20 micron-thick) substrate, that is flexible enough to be repeatedly rolled and stretched around a 4mm diameter tube, as well as being stretched.

The display is only a prototype and it obviously has failed pixels and stripes, because of not yet perfected and optimized fabrication process, but it boasts a 432 by 240 pixel screen at 121 pixels per inch at a full 16 million color range. The Fast Company article pointed out that the device fabrication is made with a rolling printing process which might ultimately allow it to be made relatively inexpensively.

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