Cost? As touch screen manufacturing prices came down, the screens have gradually gotten bigger. Larger screens have lower yields due to "defects per square in

Cost? As touch screen manufacturing prices came down, the screens have gradually gotten bigger. Larger screens have lower yields due to "defects per square inch" until later generations perfect (and cheapen) the process. Only now are we starting to get to the "barely fit into pocket" size, which marks the end game for phones. I saw a pretty ridiculous "tablet" at MalWart the other day, though. 20-something inches (and thick). Ow, my arms!