Touch display device

Patent metadata

Field	Value
Publication number	US-11687189-B2
Application number	US-202117522887-A
Country	US
Kind code	B2
Filing date	Nov 9, 2021
Priority date	Nov 26, 2020
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A touch display device is disclosed. The touch display device includes a substrate, a scan line, a data line, a scan signal line, a thin film transistor, a touch signal line and a touch electrode. The scan line, the data line, the scan signal line, the thin film transistor, the touch signal line and the touch electrode are disposed on the substrate. An extending direction of the scan line is different from an extending direction of the data line, and the scan line and the data line are electrically connected to the thin film transistor. An extending direction of the scan signal line is different from the extending direction of the scan line, and the scan signal line is electrically connected to the scan line. The touch signal line is electrically connected to the touch electrode.

First claim

What is claimed is:

1. A touch display device, having a display region and a peripheral region, the touch display device comprising:
a substrate;
a first metal layer disposed on the substrate, wherein the first metal layer comprises a scan line and a gate of a thin film transistor;
a first insulating layer disposed on the first metal layer;
a second metal layer disposed on the first insulating layer, wherein the second metal layer comprises a data line, a touch signal line and a source and a drain of the thin film transistor;
a first transparent conductive layer disposed on the first insulating layer, wherein the first transparent conductive layer comprises a pixel electrode, and the pixel electrode is electrically connected to the drain of the thin film transistor;
a second insulating layer and a third insulating layer disposed on the second metal layer and the first transparent conductive layer, wherein the third insulating layer is disposed on the second insulating layer;
a third metal layer disposed between the second insulating layer and the third insulating layer, wherein the third metal layer comprises a scan signal line; and
a second transparent conductive layer disposed on the third insulating layer, wherein the second transparent conductive layer comprises a touch electrode,
wherein
the scan line and the data line are disposed on the substrate, and an extending direction of the scan line in the display region is different from an extending direction of the data line in the display region;
the thin film transistor is disposed on the substrate and in the display region, the scan line is electrically connected to the gate of the thin film transistor, and the data line is electrically connected to the source of the thin film transistor;
the scan signal line is disposed on the substrate, an extending direction of the scan signal line in the display region is different from the extending direction of the scan line in the display region, and the scan signal line is electrically connected to the scan line; and
the touch signal line and the touch electrode are disposed on the substrate, and the touch signal line is electrically connected to the touch electrode.

2. The touch display device according to claim 1 , wherein in the display region, the scan line extends along a first direction, the data line and the scan signal line extend along a second direction, and the first direction is not parallel to the second direction.

3. The touch display device according to claim 1 , further comprising a via hole disposed on the substrate, wherein the via hole penetrates through the first insulating layer and the second insulating layer, and the scan line and the scan signal line are electrically connected with each other through the via hole.

4. The touch display device according to claim 1 , wherein the scan line is a first scan line, the data line is a first data line, the scan signal line is a first scan signal line, the thin film transistor is a first thin film transistor, and the touch display device further comprises a second thin film transistor, a third thin film transistor, a second data line, a third data line, a second scan line and a second scan signal line, wherein an extending direction of the second scan line in the display region is parallel to the extending direction of the first scan line in the display region, an extending direction of the second scan signal line in the display region is different from the extending direction of the second scan line in the display region, the second scan signal line is electrically connected to the second scan line, the second data line is electrically connected a source of the second thin film transistor, and the third data line is electrically connected to a source of the third thin film transistor, wherein the first scan signal line, the first data line, the second data line, the third data line, the touch signal line and the second scan signal line are sequentially disposed along the extending direction of the first scan line in the display region.

5. The touch display device according to claim 1 , further comprising a dummy signal line, wherein an extending direction of the dummy signal line in the display region is parallel to the extending direction of the scan signal line in the display region, and the dummy signal line is electrically isolated from the scan line.

6. The touch display device according to claim 5 , wherein the data line is a first data line, the thin film transistor is a first thin film transistor, and the touch display device further comprises a second thin film transistor, a third thin film transistor, a second data line and a third data line, wherein the second data line is electrically connected to a source of the second thin film transistor, and the third data line is electrically connected to a source of the third thin film transistor, wherein the scan signal line, the first data line, the second data line, the third data line, the touch signal line and the dummy signal line are sequentially disposed along the extending direction of the scan line in the display region.

7. A touch display device, having a display region and a peripheral region, the touch display device comprising:
a substrate;
a first metal layer disposed on the substrate, wherein the first metal layer comprises a scan line and a gate of a thin film transistor;
a first insulating layer disposed on the first metal layer;
a second metal layer disposed on the first insulating layer, wherein the second metal layer comprises a data line, a scan signal line, a touch signal line and a source and a drain of the thin film transistor;
a first transparent conductive layer disposed on the first insulating layer, wherein the first transparent conductive layer comprises a pixel electrode, and the pixel electrode is electrically connected to the drain of the thin film transistor;
a second insulating layer disposed on the second metal layer and the first transparent conductive layer; and
a second transparent conductive layer disposed on the second insulating layer, wherein the second transparent conductive layer comprises a touch electrode,
wherein
the scan line and the data line are disposed on the substrate, and an extending direction of the scan line in the display region is different from an extending direction of the data line in the display region;
the thin film transistor is disposed on the substrate and in the display region, the scan line is electrically connected to the gate of the thin film transistor, and the data line is electrically connected to the source of the thin film transistor;
the scan signal line is disposed on the substrate, an extending direction of the scan signal line in the display region is different from the extending direction of the scan line in the display region, and the scan signal line is electrically connected to the scan line; and
the touch signal line and the touch electrode are disposed on the substrate, and the touch signal line is electrically connected to the touch electrode.

8. A touch display device, having a display region and a peripheral region, the touch display device comprising:
a substrate;
a first metal layer disposed on the substrate, wherein the first metal layer comprises a scan line and a gate of a thin film transistor;
a first insulating layer disposed on the first metal layer;
a second metal layer disposed on the first insulating layer, wherein the second metal layer comprises a data line, a touch signal line and a source and a drain of the thin film transistor;
a second insulating layer disposed on the second metal layer;
a third metal layer disposed on the second insulating layer, wherein the third metal layer comprises a scan signal line;
a third

Assignees

• Hannstar Display Corp

Inventors

• Huang Sz-Kai
• Yeh Cheng-Yen
• Kang Mu-Kai
• Chen Jing-Xuan

Classifications

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title