Patent ID: 7795081

Claim:
A method for manufacturing a thin film transistor (TFT), comprising: providing a substrate; forming a patterned first metal layer, a semiconductor layer, and a second metal layer on the substrate in sequence, wherein the patterned first metal layer comprises a gate; forming a patterned first photoresist layer on the second metal layer, wherein part of the patterned first photoresist layer is placed over one side of the first metal layer; forming a patterned second photoresist layer on the second metal layer, wherein part of the patterned second photoresist layer is placed over another side of the first metal layer in opposition to a side of the patterned first photoresist layer, wherein the step of forming the patterned first photoresist layer and the step of forming the patterned second photoresist layer are not performed simultaneously; removing part of the second metal layer, which is uncovered with the patterned first photoresist layer and the patterned second photoresist layer to form a patterned second metal layer; and removing the patterned first photoresist layer and the patterned second photoresist layer to expose the patterned second metal layer to form a source and a drain.