If you're still waiting for a big-screen OLED TV, check out Mitsubishi's 155" monster - which can grow bigger and smaller at will.

Okay, perhaps "grow" is pushing things a bit: as discussed over on Electronista, the prototype device uses 1.5"x1.5" modular OLED blocks to produce its impressive 155" diagonal - meaning that blocks can be removed or added to increase or decrease the screen size.

The display's modular nature also means that the screen can be curved or deformed to mould itself to the shape of the building in which it is installed - a neat trick, and one that will come in handy in the stadia for which it is intended.

The use of multiple, small OLED building blocks to create the screen has neatly side-stepped the issues with creating large-scale OLED displays while still offering all the advantages the technology brings, including a brightness measured at around three times that from competing LCD-based screens and a greatly increased contrast ratio.

Sadly, the tech isn't without its drawbacks: because the organic compounds used in the production of OLED displays degrade over time, the set's lifespan is estimated at around 20,000 hours of continuous usage. While that might seem like a lot, it represents less than two and a half years of continuous usage - something that advertisers planning on slapping a weather-resistant version on buildings would have to factor in to its cost.

Speaking of which, Mitsubishi has yet to release pricing information or a launch schedule for the neat device - but don't expect it to be home-user-pocket friendly. You can, however, check out a video of the device being demonstrated at CEATAC.

Does this kind of modular display seem like the future, or would you be concerned about the possibility of colour matching issues and joint lines between the blocks? Share your thoughts over in the forums.

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