Thin film transistor array panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9722089-B2
Application number	US-201414482413-A
Country	US
Kind code	B2
Filing date	Sep 10, 2014
Priority date	Feb 10, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A thin film transistor array panel includes a substrate and a gate line disposed on the substrate. The gate line includes a gate electrode. A gate insulating layer is disposed on the gate line. An oxide semiconductor layer is disposed on the gate insulating layer. The oxide semiconductor layer at least partially overlaps the gate electrode. A data line is disposed on the oxide semiconductor layer. The data line includes a source electrode and a drain electrode facing the source electrode. The oxide semiconductor layer includes tungsten, indium, zinc, or tin.

First claim

What is claimed is:

1. A thin film transistor array panel, comprising:
a substrate;
a gate line disposed on the substrate, wherein the gate line comprises a gate electrode;
a gate insulating layer disposed on the gate line;
an oxide semiconductor layer disposed on the gate insulating layer, wherein the oxide semiconductor layer at least partially overlaps the gate electrode; and
a data line disposed on the oxide semiconductor layer, wherein the data line includes a source electrode and a drain electrode facing the source electrode,
wherein the oxide semiconductor layer comprises tungsten, wherein the oxide semiconductor layer further comprises indium, zinc, and/or tin, and wherein the tungsten content of the oxide semiconductor layer is about 0.1 at % to about 1.5 at %.

2. The panel of claim 1 , wherein the oxide semiconductor layer comprises zinc, and wherein the oxide semiconductor layer has a zinc content of about 20 at % to about 45 at %.

3. The panel of claim 2 , wherein the oxide semiconductor layer comprises indium, and wherein the oxide semiconductor layer has an indium content of about 5 at % to about 20 at %.

4. The panel of claim 3 , wherein the oxide semiconductor layer comprises tin, and wherein the oxide semiconductor layer has a tin content of about 3 at % to about 10 at %.

5. A thin film transistor array panel, comprising:
a substrate;
a gate electrode disposed on the substrate;
a gate insulating layer disposed on the substrate and the gate electrode;
an oxide semiconductor layer disposed on the gate insulating layer, wherein the oxide semiconductor layer comprises tungsten, and wherein the tungsten content of the oxide semiconductor layer is less than about 1 at %; and
a source electrode and a drain electrode disposed on the gate insulating layer, wherein the source electrode and the drain electrode face each other and are spaced apart from each other to form a channel region therebetween.

6. The thin film transistor array panel of claim 5 , further comprising a passivation layer disposed on the source electrode, the oxide semiconductor layer and the drain electrode.

7. The thin film transistor array panel of claim 5 , further comprising an etching prevention layer disposed on the oxide semiconductor layer in the channel region between the source and drain electrodes.

8. The thin film transistor array panel of claim 5 , wherein the oxide semiconductor layer comprises a tungsten content of 0.1 at % to about 1.0 at %.

9. The thin film transistor array panel of claim 5 , wherein the oxide semiconductor layer further comprise indium, zinc, or tin.

10. The thin film transistor array panel of claim 5 , wherein the oxide semiconductor layer comprises zinc, and wherein the oxide semiconductor layer has a zinc content of about 20 at % to about 45 at %.

Assignees

• Samsung Display Co Ltd

Inventors

• Moon Yeon Keon
• Sohn Sang Woo
• Kishimoto Katsushi
• Fukasawa Takayuki
• Shin Sang Won

Classifications

• H10P14/3446

  Transition metal elements; Rare earth elements · CPC title

• H10P14/3434

  being oxide semiconductor materials (Group IIB-VIA semiconductor materials H10P14/3424) · CPC title

• H10P14/3426

  Oxides · CPC title

• H10P14/3238

  being insulating materials · CPC title

• H10P14/2922

  being non-crystalline insulating materials, e.g. glass or polymers · CPC title