Over the years, full-colour flat panel displays, represented by thin-film-transistor (TFT) liquid crystal displays (LCD), have enabled many new applications, such as the digital camera, notebook PC and thin, flat-screen TV, through intensive research activities around the world. Recently, small-sized mobile display development has been leading the R&D effort to support the severe requirements of smartphones and tablet PCs. For the displays used in those applications, high definition, high visual quality, low power consumption, small form factor and easy-to-use touch user interface (UI) are critical values. The different types of display Technologies included are Liquid Crystal Displays, Organic Light Emitting Diodes, Digital Light Processing Technology, Plasma Displays, Field Emission Displays, and Electronic Paper.