[mkl]

Bigger tablets definitely exist, but the thing is they're much bigger, and many don't run on battery. Search "android all in one" to find them. Here are some examples:

http://www.amazon.com/s/ref=nb_sb_noss_2/192-7938256-6859156...

http://www.pcworld.com/article/2152540/android-on-the-big-sc...

http://www.asus.com/AllinOne_PCs/ASUS_Transformer_AiO_P1801/