There's also OLED, short for organic light-emitting diode, another type of flat-screen TV technology promising better picture quality. Second-screen apps add interactive features on a tablet or smartphone to coincide with live TV shows.
But so far, none of the new technologies have spurred the urgency to upgrade to a new TV, unlike the mainstreaming of high-definition did last decade. Prices for the new technologies are still very high. The new 55-inch Samsung curved OLED TV is just beginning to show up in stores -- for $8,999.
Still, new technology attracts early adopters and enthusiasts.
In its earnings call in August, Best Buy president Hubert Joly noted that the sale of larger TVs and newer technologies like OLED and ultra high-definition screens helped the company's performance."We are, of course, also intrigued by the innovation in the space with 4K TV, OLED TVs, and so forth," Joly said during the call. "We love the fact that in our stores now there's TVs with a price point of $15,000, $8,000, and that's helpful from the top-down selling standpoint."
Tamara Chuang is an outside contributor to TheStreet. Her opinions are her own. Email her at firstname.lastname@example.org and follow her on Twitter @gadgetress.