The 65-inch 4K OLED TV when it's fully unrolled. Todd Haselton | CNBC

LG just announced a TV that rolls itself up and vanishes from view when you don't need it. The LG Signature OLED TV R (which stands for rollable) was unveiled at CES 2019 in Las Vegas on Monday.

When the screen is hidden, all you see is a big base that doubles as a large speaker. When you want to watch TV, you hold a button on the remote and a panel on the base opens up while the TV starts to roll upward. The screen measures 65 inches and has all of the trimmings you expect from a high-end set, like a sharp 4K resolution and OLED panel, which means it gets really bright and has high contrast for viewing light and dark details.

It's crazy thin, and when I looked at the back I thought it resembled window blinds unfolding. There are arms that run along the sides to hold the screen in place, too. I've never seen anything like it.

There are three modes: full view when the TV is completely revealed; a smaller "line view" where you see controls for music, information about the weather or photos; and zero view, where the base with the speaker is the only thing you see.