Patent ID: 7192815
Filing Date: 2007-03-20
Classification: H01L

Abstract:
1. A method of manufacturing a thin film transistor, comprising: forming a polysilicon island over a substrate; forming a gate insulating layer over the substrate to cover the polysilicon island; forming a second passivation layer over the gate insulating layer; performing a second ion implanting process to dope ions into the polysilicon island; and removing the second passivation layer; forming a gate on the gate insulating layer above the polysilicon island; forming a first passivation layer over the substrate to cover the gate and the gate insulating layer; performing an ion implanting process to form a source/drain in the polysilicon island beside the gate, wherein a region between the source and the drain is a channel; removing the first passivation layer; forming a patterned dielectric layer over the substrate, wherein the patterned dielectric layer exposes a portion of the source and the drain; and forming a source/drain conductive layer over the patterned dielectric layer, wherein the source/drain conductive layer is electrically connected to the source/drain.