Touch display panel, manufacturing method and detecting method for the same

Patent metadata

Field	Value
Publication number	US-10282005-B2
Application number	US-201615314161-A
Country	US
Kind code	B2
Filing date	Mar 23, 2016
Priority date	Apr 27, 2015
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A touch display panel, a manufacturing method thereof and a method of detecting a touch for the same are disclosed. The touch display panel includes a first substrate ( 01 ) and a second substrate ( 02 ). The first substrate ( 01 ) includes, within its non-display region, a plurality of gate lines ( 10 ) parallel to each other, a plurality of data lines ( 20 ) parallel to each other, a plurality of first touch electrode lines ( 30 ) parallel to the gate lines ( 10 ), and a plurality of second touch electrode lines ( 40 ) parallel to the data lines ( 20 ). The first substrate ( 01 ) further includes first touch electrodes ( 50 ) electrically connected to the first touch electrode lines ( 30 ) and second touch electrodes ( 60 ) electrically connected to the second touch electrode lines ( 40 ). Between two adjacent data lines ( 20 ), there are two sub-pixels arranged in the same row on the first substrate ( 01 ). A second touch electrode line ( 40 ) is located between the two sub-pixels. A pair of gate lines ( 10 ) are located between any two adjacent rows of sub-pixels on the first substrate ( 01 ), and a first touch electrode lines ( 30 ) is located between the pair of the gate lines ( 10 ). Since the first touch electrode line ( 30 ) and the second touch electrode line ( 40 ) are disposed within the light-proof non-display region, their impact on the aperture ratio can be avoided.

First claim

What is claimed is:

1. A touch display panel, comprising:
a first substrate, comprising:
a plurality of gate lines parallel to each other;
a plurality of data lines parallel to each other;
a plurality of first touch electrode lines parallel to the gate lines;
a plurality of second touch electrode lines parallel to the data lines;
first touch electrodes, electrically connected to the first touch electrode lines and arranged in a same layer as the first touch electrode lines;
second touch electrodes, electrically connected to the second touch electrode lines;
a plurality of sub-pixels, two sub-pixels being arranged in a same row and disposed between every two adjacent data lines, one of the second touch electrode lines being located between the two sub-pixels,
a pair of gate lines being located between any two adjacent rows of sub-pixels, and one of the first touch electrode lines being located between the pair of the gate lines; and
a remaining pattern, the remaining pattern and the second touch electrode lines being located on and in contact with a same interlayer, a top surface of the remaining pattern and a top surface of the second touch electrode lines are in a same plane.

2. The touch display panel of claim 1 , wherein the second substrate comprises an auxiliary spacer and a first transparent electrode covering the auxiliary spacer;
a projection of the auxiliary spacer on the first substrate overlaps with projections of the first touch electrode and the second touch electrode on the first substrate, and the first transparent electrode covering the auxiliary spacer is located in an outermost layer of the second substrate;
the first touch electrode and the second touch electrode are located in an outermost layer of the first substrate, and top surfaces of the first touch electrode and of the second touch electrode which are far away from a base substrate of the first substrate are in a same plane.

3. The touch display panel of claim 2 , wherein the first touch electrode and the second touch electrode are located in the non-display region and arranged in a same layer.

4. The touch display panel of claim 3 , wherein the second touch electrode line and the data line are arranged in a same layer, and the second touch electrode is electrically connected to the second touch electrode line through a via hole.

5. The touch display panel of claim 3 , wherein the first transparent electrode is a common electrode.

6. A method of manufacturing a touch display panel, comprising: forming a first substrate and forming a second substrate;
wherein forming the first substrate comprises: forming a first substrate which comprises:
a plurality of gate lines parallel to each other;
a plurality of data lines parallel to each other;
a plurality of first touch electrode lines parallel to the gate lines;
a plurality of second touch electrode lines parallel to the data lines;
first touch electrodes, electrically connected to the first touch electrode lines and arranged in a same layer as the first touch electrode lines;
second touch electrodes, electrically connected to the second touch electrode lines;
a plurality of sub-pixels, two sub-pixels being arranged in a same row and disposed between every two adjacent data lines, one of the second touch electrode lines being located between the two sub-pixels, a pair of gate lines being located between any two adjacent rows of sub-pixels, and one of the first touch electrode lines being located between the pair of the gate lines; and
a remaining pattern, fabricated below the first touch electrodes,
wherein the second touch electrode line, the remaining pattern and the data line are fabricated through a single patterning process, such that the remaining pattern and the second touch electrode line are located on and in contact with a same interlayer, and a top surface of the remaining pattern and a top surface of the second touch electrode lines are in a same plane,
wherein the first touch electrode line and the first touch electrode are fabricated through a single patterning process.

7. The method of claim 6 , wherein forming the second substrate comprises: forming a second substrate comprising an auxiliary spacer and a first transparent electrode covering the auxiliary spacer;
wherein a projection of the auxiliary spacer on the first substrate overlaps with projections of the first touch electrode and the second touch electrode on the first substrate, and the first transparent electrode covering the auxiliary spacer is exposed on a surface of the second substrate;
wherein the first touch electrode and the second touch electrode are exposed on a surface of the first substrate, and top surfaces of the first touch electrode and of the second touch electrode which are far away from a base substrate of the first substrate are in a same plane.

8. The method of claim 7 , wherein the first touch electrode and the second touch electrode are formed in the non-display region and fabricated through a single patterning process.

9. The method of claim 8 , wherein the second touch electrode is electrically connected to the second touch electrode line through a via hole.

10. The method of claim 8 , wherein the first transparent electrode is a common electrode.

11. A method of detecting a touch on the touch display panel of claim 1 , comprising:
applying a drive signal to the first transparent electrode on the second substrate during a touch operation;
determining a coordinate of a touch point through variation of signals on the first touch electrode line electrically connected to the first touch electrode and on the second touch electrode line electrically connected to the second touch electrode on the first substrate.

12. A method of detecting a touch on the touch display panel of claim 1 , comprising:
during a touch operation, applying a drive signal to one of the first touch electrode line electrically connected to the first touch electrode and the second touch electrode line electrically connected to the second touch electrode on the first substrate;
determining a coordinate of a touch point through variations of signals on the first touch electrode line and on the second touch electrode line.

13. The touch display panel of claim 1 , wherein each first touch electrode line is non-overlapped with each first touch electrode along a direction perpendicular to a plane of the first substrate.

14. A touch display panel, comprising:
a first substrate, comprising:
a plurality of gate lines parallel to each other;
a plurality of data lines parallel to each other;
a plurality of first touch electrode lines parallel to the gate lines;
a plurality of second touch electrode lines parallel to the data lines;
first touch electrodes, electrically connected to the first touch electrode lines;
second touch electrodes, electrically connected to the second touch electrode lines, each first touch electrode and each second touch electrode overlapping with same one of the pair of gate lines along a direction perpendicular to a plane of the first substrate; and
a plurality of sub-pixels, two sub-pixels being arranged in a same row and disposed between every two adjacent data lines, one of the second touch electrode lines being located between the two sub-pixels,
a pair of gate lines being located between any two adjacent rows of sub-pixels on the first substrate, and one of the first touch electrode lines being located between the pair of the gate lines; and

a second substrate, disposed oppositely to the first substrate.

15. The touch display panel of claim 14 , wherein the sec

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Li Liangliang
• Guo Huibin
• Kuo Tsung Chieh
• Chen Xi
• Feng Yuchun
• Wang Shoukun
• Wang Jing

Classifications

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/04164

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