Update: According to some sites, this is actually a 4K panel...

Grundig unveiled a new 55" OLED TV prototype at the IFA 2014 trade show. I'm not entirely sure, but it seems to be a 4K panel.

Grundig OLED TV prototype

It's highly likely (as was the case with the Panasonic 65" OLED I reported about a couple of hours ago) that the panel maker is LG Display. It will be great to see more makers release OLED TVs, even if there's only one panel supplier. As far as I know Grundig did not say when this TV will be released, but it seems to be a real product, more advanced than Panasonic's TV panel demonstration.

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Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs