A new prototype from Panasonic has been shown off at the CEATEC electronics expo in Japan this week.
When switched on, it's just like a normal TV. When switched off, it's as transparent as glass, meaning you can see the wall or shelving behind.
Panasonic describes it as the "future of display screens" - although as you might expect, the company's staying tight-lipped about the technology behind its transparent TV, just in case its competitors have something similar in mind.
The s
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