For laptop users, having dual screens on the road is almost impossible unless they are willing to lug one of Lenovo's hefty notebooks around.

Now, a Hong Kong-based company MEDL technology is showing a 13-inch lightweight, portable LED display that can be used as a secondary monitor to add digital real estate.

The LED display, simply named "The Panel," weighs about 2.2 lbs and connects to a PC or a Mac through a USB cable. The screen has a resolution of 1280 x 800 pixels and claims up to five hours of battery life.

The Panel is not limited for use just with laptops, says MEDL. It can connect to phones and gaming consoles such as the Xbox 360 or Sony PlayStation 3–anything that has a USB port.

MEDL is showing The Panel at the ongoing DEMO Spring conference.

As laptops become more popular among users than desktops, the idea of having dual displays for mobile devices is catching on. Last year, Lenovo introduced a $5000 dual-screen laptop that weighed about 11 lbs and combined a 17-inch display and a 11-inch screen in a single box.

MEDL's LED screen could be an alternative to the Lenovo monster, though MEDL is yet to announce pricing or availability for the product.