Abstract:
Embodiments of the present invention relate to display technology field and provide a thin film transistor (1) and manufacturing method thereof, an array substrate, and a display device, and do not damage an active layer (12) of the thin film transistor while forming vias (16) over the source region (120) and the drain region (121) with via etching process. The thin film transistor (1) comprises a substrate (10), an active layer (12), a gate insulating layer (13), a gate (14) and an inter-layer insulating layer (17) disposed on the substrate (10), and further comprises: a conductive etching barrier layer (15) disposed on the active layer; the conductive etching barrier layer (15) being located to correspond to the source region (120) and the drain region (121) of the active layer (12) and vias (16) being formed over the source region (120) and the drain region (121) of the active layer (12) and not extending beyond edges of the conductive etching barrier layer (15).
Abstract:
A method of manufacturing a low temperature polysilicon film comprises: providing a substrate on a platform; forming a buffer layer on said substrate; forming an amorphous silicon layer on said buffer layer; and heating and annealing said amorphous silicon layer to allow said amorphous silicon layer to form a polycrystalline silicon layer; wherein a thermal insulating layer is formed on a bottom surface of said substrate or a top surface of the platform, before said buffer layer is formed on said substrate.