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“Rollable” OTFT-driven OLED Display

Sony Corporation (‘Sony’) announced that it developed a super-flexible 80 μm-thick 4.1-in 121 ppi OTFT*1-driven full color OLED display which can be wrapped around a thin cylinder.

To create the display, Sony developed OTFTs with an original organic semiconductor material (a PXX derivative) with eight times*2 the current modulation of conventional OTFTs.

One of the main advantages of OLED is that it can be flexible—so flexible, in fact, that it can be wrapped around a pencil. Taking 2007’s .3mm prototype Sony’s made a new one just 80μm-thick.

That’s about ten times the size of a red blood cell, or just a tiny bit thinner than a single hair. The whole OLED measures 4.1-inches in size, and has a 432 x 240 resolution and a contrast ratio of under 1,000:1.

It’s another world first, boasting that it’s the first time an OLED panel can still stream video while being rolled up (around a cylinder with a 4mm radius) and stretched.

Sony will continue to improve the performance and reliability of its flexible organic displays because the application of these developments are expected to yield thin, light-weight, durable and mobile devices with enhanced form-factor.

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