LAS VEGAS – LG unveiled a 55-inch TV that sports "ultrahigh-definition" resolution with more than 8 million pixels, kicking off what is likely to be a mini-obsession with the latest super-clear format at the annual International CES gadget show.

The model announced Monday is the smallest in a 2013 lineup that includes 65-inch and 84-inch versions. But the smaller size — and likely smaller price tag — begins the parade of TV makers that are seeking to bring ultrahigh definition to the masses.

Also known as "4K," ultrahigh-definition screens are 3,840 pixels wide and 2,160 pixels tall and have four times as many pixels as the current HD screens.