Patent ID: 9691881
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A manufacturing method of a thin film transistor substrate, comprising: providing a first substrate; forming a gate electrode on the first substrate; forming a gate insulating layer covering the gate electrode on the first substrate; forming an active material layer on the gate insulating layer; forming a photo-sensitive material layer on the active material layer; performing a photolithography process on the photo-sensitive material layer to pattern the photo-sensitive material layer so as to form a protective layer, wherein the protective layer is above the gate electrode; wet etching the active material layer by using the protective layer as a mask to form an active layer, wherein a side wall of the active layer is recessed from a side wall of the protective layer; removing the protective layer; forming a first electrode connecting to a first portion of the active layer; and forming a second electrode connecting to a second portion of the active layer, wherein the first electrode is one of a source electrode and a drain electrode, and the second electrode is the other one of the source electrode and the drain electrode.