Active matrix liquid crystal display is a relatively novel liquid crystal display technology

Active matrix liquid crystal display is a relatively novel liquid crystal display technology, in which each pixel switching by deposition on a large area glass substrate constituting the liquid crystal cells on the surface of a thin film electronic  abrasive wheels . Currently, it is the only - one kind has proved in color, grayscale and image quality can be comparable with the CRT LCD technology. Polysilicon thin film silicon materials have both high mobility and a large area amorphous silicon,  abrasive grinding  of the characteristics, and the active matrix liquid crystal display as the most ideal material thin film electronic device. Preparation of polycrystalline silicon thin film in many ways, including through the group phase crystallization of  Abrasive grinding wheel  thin-film method available polysilicon thin film with excellent performance, but due to the crystallization temperature> 600 "C; must use expensive quartz glass as the substrate; while crystallization time also up to 40h or so, which greatly hindered practical devices and industrialization. summarizes the formation of amorphous silicon and metal eutectic temperature and found that if amorphous metal contact, which will be far lower than the crystallization temperature crystallization temperature of the pure amorphous silicon.