Suntech Power is currently pursuing thin film technology, a low cost PV technology that involves depositing several thin layers of silicon or more complex materials on a substrate such as glass to make a PV cell.
But it's hard to do that on a large screen because larger masks tend to sag in the middle and the materials then overlap on the substrate, making a mess of the pixels.
For this transfer to take place successfully, the materials have to be chosen so that the ink is more attracted to the substrate than it is to the stencil.