Touch display panel

Patent metadata

Field	Value
Publication number	US-10824258-B2
Application number	US-201816308807-A
Country	US
Kind code	B2
Filing date	Sep 27, 2018
Priority date	Apr 27, 2018
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

The invention provides a touch display panel, comprising: an active area and a non-active area located around the active area; the active area comprising: a plurality of electrode units arranged in an array; and a plurality of signal transmission lines extending in a column direction arranged sequentially along the electrode units; the non-active area comprising: an auxiliary signal line surrounding the active area, a driving signal source connected to the auxiliary signal line, and a plurality of fanout lines connected to the driving signal source; the signal transmission lines comprising: a plurality of main signal transmission lines connected to electrode units, and a plurality of dummy signal lines connected to auxiliary signal line, wherein the main signal transmission lines connected to driving signal source respectively through fanout lines. The invention reduces number of channels of driving signal source and line density in fanout area to reduce production cost and difficulty.

First claim

What is claimed is:

1. A touch display panel, comprising: an active area, and a non-active area located in peripheral of the active area;
the active area comprising: a plurality of electrode units arranged in an array; and a plurality of signal transmission lines extending in a column direction arranged sequentially along the electrode units;
the non-active area comprising: an auxiliary signal line surrounding the active area, a driving signal source electrically connected to the auxiliary signal line, and a plurality of fanout lines electrically connected to the driving signal source;
the signal transmission lines comprising: a plurality of main signal transmission lines electrically connected to the plurality of electrode units, and a plurality of dummy signal lines electrically connected to the auxiliary signal lines, wherein the plurality of main signal transmission lines being electrically connected to the driving signal source respectively through the plurality of fanout lines;
the driving signal source being configured to provide a common voltage signal to the auxiliary signal line and the main signal transmission lines during a display phase, and provide a touch sensing signal to the auxiliary signal line and the main signal transmission line during a touch sensing phase;
wherein the active area further comprises: a plurality of color-resisting blocks arranged in an array disposed opposite to the plurality of electrode units; and a black matrix located between adjacent color-resisting blocks, each of the signal transmission lines being correspondingly blocked by the black matrix located between two adjacent columns of color-resisting blocks;
wherein every two adjacent signal transmission lines form a group, the two signal transmission lines in the same group are separated by two columns of color-resisting blocks, the two adjacent signal transmission lines in different groups are separated by a column of color-resisting blocks, and the signal transmission lines in the same group are both main signal transmission lines or both dummy signal lines.

2. The touch display panel as claimed in claim 1 , wherein every two adjacent signal transmission lines form a group, the two signal transmission lines in the same group are separated by a column of color-resisting blocks, the two adjacent signal transmission lines in different groups are separated by a column of color-resisting blocks, and the signal transmission lines in the same group are both main signal transmission lines or both dummy signal lines.

3. The touch display panel as claimed in claim 1 , wherein the two main signal transmission lines in the same group are electrically connected to the same electrode unit, and are electrically connected to the driving signal source through the same fanout line.

4. The touch display panel as claimed in claim 1 , wherein a column of color-resisting blocks is disposed between each adjacent two signal transmission lines.

5. The touch display panel as claimed in claim 4 , wherein each of the electrode units is electrically connected to two main signal transmission lines, and each of the main signal transmission lines is electrically connected to the driving signal source through a corresponding fanout line.

6. The touch display panel as claimed in claim 1 , wherein the signal transmission line and the fanout line are both located in a first film layer, and the electrode unit and the auxiliary signal line are both located in a second film layer stacked with the first film layer.

7. The touch display panel as claimed in claim 1 , wherein the auxiliary signal line is located on a third film layer, and the signal transmission line and the fanout line are both located on the first film layer stacked with the third film layer, and the electrode units are all located on the second film layer stacked with the first film layer.

8. The touch display panel as claimed in claim 1 , wherein the driving signal source comprises a plurality of first output channels and a second output channel, each of the first output channels is electrically connected to one of the fanout lines, and the second output channel is electrically connected to the auxiliary signal line.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Zou Gonghua
• Yan Yajing

Classifications

• G02F1/133514

  Colour filters · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/13338

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