On the industry’s path to a new generation of display performance and manufacturability, it encountered a roadblock: thin film transistor performance and manufacturability. As in the VLSI semiconductor industry before it, the display industry chose to focus on improving semiconductor material performance to break through the roadblock - moving from silicon to higher performance semiconductor materials. The plan was simple: better semiconductor + same transistor structure and materials = better TFTs. After 20 years of research and development, the semiconductor path around the roadblock has failed; it has provided about one-third of the required advances in performance, device size and manufacturability.