CES Panasonic demo'd what must be the world's biggest TV, let alone the world's largest HD plasma screen. Its 150in display crams in a whopping 4096 x 2160 pixels more than four times 1080p's 1920 x 1080.

Panasonic's 150in TV: monster

It's a prototype, of course, but if the one-time gimmick 103in model can become a TV consumers can buy - with a sufficiently capacious wallet, natch - why not the 150in model?

Four times Full HD resolution

The screen measures 3.31 x 1.87m, an area equivalent to nine 50in plasmas, Panasonic said.