LG Display is showing 55" transparent OLED TVs at CES 2019, and here's a video that shows the display in action:

LGD says that its 55" OLEDs feature a transparency of 40%. The company has been showing its large-area transparent OLEDs for many years, but we're still waiting for this technology to be commercialized.

LGD is also showing smaller 12.3" transparent OLEDs with higher transparency (45%) aimed for automotive applications.

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