Samsung has unveiled the world's thinnest flat-panel LCD TV.

The company displayed the prototype 40in LCD TV in South Korea. At just 7.9mm thick, it's a tenth of a millimetre thinner than Philips' 8mm thick 32in flat-panel TV, which was on display at IFA in Berlin earlier this year.

Both prototypes gained some thinness by having the tuner and some other electronics separated into a box that's intended to sit alongside the screen. There's no word on when either might become a commercial product.

Samsung was also showing a prototype 52in LCD that is 9.9mm thin. That matches the thinness of Sony's ZX1, which is the thinnest LCD television yet to be announced as an actual product. While Sony is due to begin selling the ZX1 in Japan in November and soon after in Europe, Samsung doesn't have any details on when its set might hit the market.