TFT structures optimal for driving conditions of a pixel portion and driving circuits are obtained using a small number of photo masks. First through third semiconductor films are formed on a first insulating film. First shape first, second, and third electrodes are formed on the first through third...http://www.google.es/patents/US7531839?utm_source=gb-gplus-sharePatente US7531839 - Display device having driver TFTs and pixel TFTs formed on the same substrate
Display device having driver TFTs and pixel TFTs formed on the same substrate
