If you currently look for a large sub display for your computer, Japanese accessory maker Green House has a pretty interesting solution in its pipeline: the GH-USD16K [JP] is a 15.6-inch LCD screen that boasts a power consumption of just 5W and requires only a USB 2.0 connection to work.
Spec-wise, you can expect 1,366 x 768 resolution, 400:1 contrast ratio, and 220cd/m2 brightness. The display is sized at 377.7×141.8×287.8mm and weighs 1.2kg. If you want to go wild, you can connect up to six of the devices to a single machine.
Green House will be selling the GH-USD16K on its Japanese website by the end of this month (price: $215).