Array substrate and manufacturing method thereof and touch panel

Patent metadata

Field	Value
Publication number	US-9575350-B2
Application number	US-201414415420-A
Country	US
Kind code	B2
Filing date	May 28, 2014
Priority date	Dec 17, 2013
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

The present invention discloses an array substrate and a manufacturing method thereof, and a touch panel. The array substrate comprises a substrate and gate lines and data lines formed thereon. The gate lines and the data lines define pixel units, each of which comprises a display thin film transistor and a pixel electrode. Scanning lines, receiving lines and touch electrodes are also formed on the substrate. Each of a part or all of the pixel units further comprises a touch thin film transistor connected to the touch electrode, and the touch thin film transistor is connected to the scanning line and the receiving line. In the present invention, the display thin film transistors and the touch thin film transistors are simultaneously disposed in the pixel units.

First claim

The invention claimed is:

1. An array substrate, comprising:
a substrate;
gate lines and data lines, which are formed on the substrate and define pixel units;
a display thin film transistor and a pixel electrode, which are disposed in each of the pixel units;
scanning lines, receiving lines and touch electrodes, which are formed above the substrate; and
a touch thin film transistor, which is disposed in each of a part or all of the pixel units and connected to the touch electrode, the scanning line and the receiving line.

2. The array substrate according to claim 1 , wherein a gate of the touch thin film transistor is connected to the scanning line, a source of the touch thin film transistor is connected to the touch electrode, and a drain of the touch thin film transistor is connected to the receiving line.

3. The array substrate according to claim 2 , wherein the touch electrodes and the pixel electrodes are provided in a same layer, and the touch electrodes are crisscrossed.

4. The array substrate according to claim 3 , further comprising a second passivation layer, wherein the second passivation layer covers the scanning lines and the gates of the touch thin film transistors, and the touch electrodes and the pixel electrodes are formed on the second passivation layer.

5. The array substrate according to claim 2 , wherein the array substrate further comprises first shielding patterns provided in the same layer as the gate lines and second shielding patterns provided in the same layer as the scanning lines; and
the gates of the touch thin film transistors are provided above the first shielding patterns, and the second shielding patterns are provided above the gates of the display thin film transistors.

6. The array substrate according to claim 5 , wherein the gates of the touch thin film transistors are partially or completely overlapped with the first shielding patterns, and the second shielding pattern are partially or completely overlapped with the gates of the display thin film transistors.

7. The array substrate according to claim 2 , wherein the gates of the touch thin film transistors and the scanning lines are provided in a same layer, the gates of the touch thin film transistors and the scanning lines are provided above the data lines, and the sources and drains of the touch thin film transistors, the receiving lines and the data lines are provided in a same layer.

8. The array substrate according to claim 7 , wherein the sources and drains of the touch thin film transistors are formed on active layers of the touch thin film transistors, and the sources and drains of the display thin film transistors are formed on active layers of the display thin film transistors; and
the sources and drains of the touch thin film transistors and the sources and drains of the display thin film transistors are provided in a same layer, and the active layers of the touch thin film transistors and the active layers of the display thin film transistors are provided in a same layer.

9. The array substrate according to claim 8 , wherein the active layers of the display thin film transistors are formed on the gates of the display thin film transistors, and the gates of the display thin film transistors and the gate lines are provided in a same layer.

10. The array substrate according to claim 7 , further comprising a first passivation layer, wherein the first passivation layer covers the sources and drains of the touch thin film transistors, the receiving lines and the data lines, and the scanning lines and the gates of the touch thin film transistors are formed on the first passivation layer.

11. The array substrate according to claim 1 , further comprising common electrodes, wherein first storage capacitances and first liquid crystal capacitances are formed between the pixel electrodes and the common electrodes, and second storage capacitances and second liquid crystal capacitances are formed between the touch electrodes and the common electrodes.

12. The array substrate according to claim 11 , further comprising a third passivation layer, wherein the third passivation layer covers the touch electrodes and the pixel electrodes, and the common electrodes are formed on the third passivation layer.

13. A touch panel, comprising a color filter substrate and an array substrate which are provided opposite to each other, with a liquid crystal layer being provided between the color film substrate and the array substrate, wherein the array substrate comprises:
a substrate;
gate lines and data lines, which are formed on the substrate and define pixel units;
a display thin film transistor and a pixel electrode, which are disposed in each of the pixel units;
scanning lines, receiving lines and touch electrodes, which are formed above the substrate; and
a touch thin film transistor, which is disposed in each of a part or all of the pixel units and connected to the touch electrode, the scanning line and the receiving line.

14. The touch panel according to claim 13 , wherein a gate of the touch thin film transistor is connected to the scanning line, a source of the touch thin film transistor is connected to the touch electrode, and a drain of the touch thin film transistor is connected to the receiving line.

15. The touch panel according to claim 14 , wherein the gates of the touch thin film transistors and the scanning lines are provided in a same layer, the gates of the touch thin film transistors and the scanning lines are provided above the data lines, and the sources and drains of the touch thin film transistors, the receiving lines and the data lines are provided in a same layer.

16. The touch panel according to claim 15 , wherein the sources and drains of the touch thin film transistors are formed on active layers of the touch thin film transistors, and the sources and drains of the display thin film transistors are formed on active layers of the display thin film transistors; and
the sources and drains of the touch thin film transistors and the sources and drains of the display thin film transistors are provided in a same layer, and the active layers of the touch thin film transistors and the active layers of the display thin film transistors are provided in a same layer.

17. The touch panel according to claim 16 , wherein the active layers of the display thin film transistors are formed on the gates of the display thin film transistors, and the gates of the display thin film transistors and the gate lines are provided in a same layer.

18. The touch panel according to claim 13 , wherein the touch electrodes and the pixel electrodes are provided in a same layer, and the touch electrodes are crisscrossed.

19. A manufacturing method of an array substrate, comprising steps of:
forming gate lines, data lines, scanning lines, receiving lines, display thin film transistors and touch thin film transistors on a substrate, wherein the gate lines and the data lines define pixel units, in each of which the display thin film transistor is provided, and the touch thin film transistor, which is connected to the scanning line and the receiving line, is provided in each of a part or all of the pixel units; and
forming pixel electrodes and touch electrodes on the substrate, wherein the pixel electrodes are connected to the display thin film transistors, the touch electrodes are connected to the touch thin film transistors, and the pixel electrodes are provided in the pixel units.

20. The manufacturing method of an array substrate according to cl

Assignees

• Boe Technology Group Co Ltd
• Hefei Optoelectronics Tech Co Ltd
• Heifei Boe Optoelectronics Tech Co Ltd

Inventors

• Mu Suzhen
• Hu Ming

Classifications

• H01L29/78633

  Electricity · mapped topic

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• H01L27/1255

  Electricity · mapped topic

• H01L27/1259

  Electricity · mapped topic

• H01L27/124

  Electricity · mapped topic