Patent ID: 9634029
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A thin film transistor (TFT) substrate, comprising: a substrate, wherein the substrate is a flexible substrate; and a TFT structure, disposed on the substrate and comprising: a gate layer, disposed on the substrate and comprising a first gate electrode and a second gate electrode electrically connected to the first gate electrode, wherein the first gate electrode and the second gate electrode are parts of the same TFT structure; a gate insulator layer, disposed on the substrate and covering the first and second gate electrodes; a first channel island, disposed on the gate insulator layer and corresponding to the first gate electrode; a second channel island, disposed on the gate insulator layer and corresponding to the second gate electrode, wherein the first and second channel islands are made of metal oxide; and a source and drain layer, disposed on the gate insulator layer and next to the first and second channel islands, wherein the source and drain layer partially covers a top surface of the first channel island and a top surface of the second channel island, wherein the gate insulator layer is a first multilayer structure which comprises a first silicon nitride layer covering the first and second gate electrodes and a first silicon oxide layer covering the first silicon nitride layer, and the TFT substrate further comprises: a passivation layer, which is a second multilayer structure and comprises: a pixel electrode, disposed on the second silicon nitride layer and electrically connected to a drain electrode of the source and drain layer.