Touch display panel and drive method for the same, and touch display device

Patent metadata

Field	Value
Publication number	US-11586332-B2
Application number	US-202117377277-A
Country	US
Kind code	B2
Filing date	Jul 15, 2021
Priority date	Dec 29, 2020
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

A touch display panel, a method for driving the same and a touch display device are provided. The touch display panel includes a substrate, and a light-emitting array layer, a packaging layer, a first electrode layer and a color resistor layer successively arranged on the substrate. The first electrode layer includes multiple first touch electrodes. The packaging layer includes a first sub-packaging layer and a second sub-packaging layer which are successively arranged in a direction away from the substrate and between which an auxiliary electrode is arranged. Projection of the first touch electrode is at least partially overlapped with projection of the auxiliary electrode in a direction perpendicular to the substrate. In touch charging stage, the first touch electrode is applied with a first driving signal, the auxiliary electrode is applied with a second driving signal, and the second driving signal and the first driving signal are synchronous.

First claim

The invention claimed is:

1. A touch display panel, comprising:
a substrate; and
a light-emitting array layer, a packaging layer, a first electrode layer and a color resistor layer that are successively arranged on a surface of the substrate, wherein
the first electrode layer comprises a plurality of first touch electrodes;
the packaging layer comprises at least a first sub-packaging layer and a second sub-packaging layer, the first sub-packaging layer and the second sub-packaging layer are successively arranged in a direction away from the substrate, an auxiliary electrode is arranged between the first sub-packaging layer and the second sub-packaging layer, and a projection of the first touch electrode is at least partially overlapped with a projection of the auxiliary electrode in a direction perpendicular to the substrate; and
the first touch electrode is applied with a first driving signal and the auxiliary electrode is applied with a second driving signal in a charging stage of the first touch electrodes, and the second driving signal and the first driving signal are synchronous,
wherein the auxiliary electrode is made of a conductive light-shielding material.

2. The touch display panel according to the claim 1 , wherein the first driving signal and the second driving signal are synchronous signals with a same frequency, a same magnitude and a same phase.

3. The touch display panel according to the claim 1 , wherein the first black matrix and the auxiliary electrode each has a mesh-shaped structure, and a line width of the auxiliary electrode is greater than the line width of the first black matrix.

4. The touch display panel according to the claim 1 , wherein the plurality of first touch electrodes are arranged in an array, and the touch display panel further comprises a second electrode layer, wherein
the second electrode layer is arranged between the packaging layer and the first electrode layer; or the second electrode layer is arranged between the first electrode layer and the color resistor layer; and
an insulating layer is arranged between the second electrode layer and the first electrode layer, the second electrode layer comprises a plurality of touch wires, and the plurality of touch wires are electrically connected with the plurality of first touch electrodes, and
wherein the first black matrix is provided with a plurality of opening areas, and a plurality of color resistors are respectively arranged in the plurality of opening areas, and the insulating layer is the color resistors.

5. The touch display panel according to the claim 1 , further comprising a third electrode layer, wherein
the third electrode layer is arranged between the packaging layer and the first electrode layer; or the third electrode layer is arranged between the first electrode layer and the color resistor layer;
an insulating layer is arranged between the third electrode layer and the first electrode layer; the third electrode layer comprises a plurality of second touch electrodes; the first touch electrode extends along a first direction, the plurality of first touch electrodes are successively arranged in a second direction, the second touch electrode extends along the second direction, the plurality of second touch electrodes are successively arranged in the first direction, and the second direction is intersected with the first direction, and
wherein the first black matrix is provided with a plurality of opening areas, and a plurality of color resistors are respectively arranged in the plurality of opening areas, and the insulating layer is the color resistors.

6. The touch display panel according to the claim 1 , wherein the auxiliary electrode comprises a plurality of second touch electrode, wherein
the first touch electrode extends along a first direction, the plurality of first touch electrodes are successively arranged in a second direction, the second touch electrode extends along the second direction, the plurality of second touch electrodes are successively arranged in the first direction, and the second direction is intersected with the first direction.

7. The touch display panel according to the claim 1 , wherein the first sub-packaging layer and the second sub-packaging layer each comprises at least one inorganic insulating layer and at least one organic insulating layer that are laminated.

8. The touch display panel according to the claim 7 , wherein the inorganic insulating layer and the organic insulating layer in the first sub-packaging layer and the second sub-packaging layer are laminated in an alternative way.

9. The touch display panel according to the claim 8 , wherein
a layer arranged on a side of the auxiliary electrode facing toward the substrate is the inorganic insulating layer; and a layer arranged on a side of the auxiliary electrode away from the substrate is the organic insulating layer.

10. The touch display panel according to the claim 7 , wherein layers arranged on a side of the auxiliary electrode facing toward the substrate and a side of the auxiliary electrode away from the substrate are both the organic insulating layers.

11. The touch display panel according to the claim 1 , wherein the color resistor layer comprises a plurality of color resistors, and two adjacent color resistors have an overlapping part therebetween, wherein the overlapping part completely covers the first touch electrode.

12. The touch display panel according to the claim 1 , wherein the first sub-packaging layer comprises a first incline sidewall in a non-display area of the touch display panel, and the second sub-packaging layer comprises a second incline sidewall in a non-display area of the touch display panel, wherein
the first incline sidewall and the second incline sidewall respectively form an acute angle with a plane where the substrate is located, and a projection of the second incline sidewall covers a projection of the first incline sidewall in the direction perpendicular to the substrate.

13. The touch display panel according to the claim 12 ,
wherein the auxiliary electrode comprises a first part and the first touch electrode comprises a second part, the first part and the second part are located in a non-display area of the touch display panel, projections of the first part and the second part are not overlapped with a projection of the light-emitting array layer in the direction perpendicular to the substrate, and the first part is electrically connected with the second part, and
wherein the first part and the second part are at least partially located on the incline sidewall of the first sub-packaging layer and the incline sidewall of second sub-packaging layer.

14. The touch display panel according to the claim 1 , wherein the auxiliary electrode comprises a first part and the first touch electrode comprises a second part, wherein
the first part and the second part are located in a non-display area of the touch display panel, projections of the first part and the second part are not overlapped with a projection of the light-emitting array layer in the direction perpendicular to the substrate, and the first part is electrically connected with the second part.

15. A touch display device, comprising a touch display panel, the touch display panel comprising:
a substrate; and
a light-emitting array layer, a packaging layer, a first electrode layer and a color resistor layer that are successively arranged on a surface of the substrate, wherein
the first electrode layer comprises a plurality of first touch electrodes;
the packaging layer comprises at least a first sub-packaging layer and

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Lu Feng

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/04184

  Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title