WO2022143049A1

WO2022143049A1 - Touch-control substrate, touch-control display panel, and touch-control apparatus

Info

Publication number: WO2022143049A1
Application number: PCT/CN2021/136178
Authority: WO
Inventors: 拉西纳·库利巴利; 木海敏·齐亚乌丁
Original assignee: 北京奕斯伟计算技术有限公司
Priority date: 2020-12-29
Filing date: 2021-12-07
Publication date: 2022-07-07
Also published as: CN112631460A

Abstract

Provided are a touch-control substrate, touch-control display panel, and touch-control apparatus. The touch-control substrate comprises: a base substrate; a plurality of touch-control units located in an array distributed on said base substrate, each of said touch-control units comprising at least two first electrodes (TX0-TX3) and at least two second electrodes (RX0-RX15), arranged at intervals; within the same touch-control unit, each of said at least two second electrodes (RX0-RX15) is located between said at least two first electrodes (TX0-TX3), and no second electrode (RX0-RX15) is arranged between two adjacent touch-control units of the same row.

Description

Touch substrate, touch display panel and touch display device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202011590861.1 filed with the State Intellectual Property Office of China on December 29, 2020, the entire disclosure of which is incorporated herein by reference.

technical field

The present disclosure relates to the field of touch technology, and in particular, to a touch substrate, a touch display panel, and a touch display device.

Background technique

At present, in the layout of the single-layer touch pattern, the touch electrodes are distributed in the touch area and the transition area, and the coupling strength between the electrodes in the touch area and the transition area is different, which directly affects the sensitivity of the touch, and also That is, inconsistent coupling strength between electrodes will affect touch position accuracy, linear response, and signal-to-noise ratio.

SUMMARY OF THE INVENTION

In view of this, the present disclosure provides a touch substrate, a touch display panel and a touch display device.

Embodiments of the first aspect of the present disclosure provide a touch substrate, the touch substrate comprising:

substrate substrate;

A plurality of touch control units located in an array on the base substrate, each of the touch control units includes at least two first electrodes and at least two second electrodes arranged at intervals, and within the same touch control unit, all The at least two second electrodes are both located between the at least two first electrodes, and no second electrodes are disposed between two adjacent touch control units in the same row.

Optionally, at least two first electrodes in the same touch unit are arranged at intervals in the row direction.

Optionally, in the same touch unit, at least two second electrodes are included between two adjacent first electrodes, and at least two second electrodes between two adjacent first electrodes are spaced apart in the column direction. arrangement.

Optionally, in the same touch unit, the length of the first electrode in the column direction is the same as or approximately the length of the area occupied by the at least two second electrodes located between two adjacent first electrodes in the column direction. same.

Optionally, in the same touch unit, the number of second electrodes between every two adjacent first electrodes is equal.

Optionally, the number of the second electrodes arranged between every two adjacent first electrodes in the touch control unit is three.

Optionally, the number of the second electrodes arranged between every two adjacent first electrodes in the touch control unit is four.

Optionally, the first electrode is a driving electrode, and the second electrode is a sensing electrode, or, the first electrode is a sensing electrode, and the second electrode is a driving electrode.

The embodiment of the second aspect of the present disclosure further provides a touch display panel, the touch display panel includes the touch substrate according to the embodiment of the first aspect.

Embodiments of the third aspect of the present disclosure further provide a touch display device, where the touch display device includes the touch display panel according to the embodiments of the second aspect.

Description of drawings

FIG. 1 is a schematic diagram of a node in a single-layer touch control in the prior art;

FIG. 2 is a schematic diagram of the arrangement of single-layer touch electrodes in the prior art;

FIG. 3 is a schematic structural diagram of a touch substrate according to an embodiment of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present disclosure.

FIG. 1 is a schematic diagram of nodes in a single-layer touch control in the prior art. As shown in FIG. 1, in a discontinuous single-layer touch design, a common touch unit includes a drive electrode T1 and three sensing electrodes R1-R3, that is, in a touch unit, a touch The driving electrodes correspond to the three sensing electrodes. The driving electrode T1 and a sensing electrode (eg, R1 ) constitute a node 11 .

FIG. 2 is a schematic diagram of the arrangement of single-layer touch electrodes in the prior art. As shown in FIG. 2 , in an existing single-layer touch electrode layout design, 4 drive electrodes TX0 and 16 sensing electrodes RX0 to RX15 constitute a touch unit. Similarly, 4 drive electrodes TX1 and 16 The sensing electrodes RX0-RX15 constitute a touch unit, the 4 driving electrodes TX2 and 16 sensing electrodes RX0-RX15 constitute a touch unit, and the 4 driving electrodes TX3 and 16 sensing electrodes RX0-RX15 constitute a touch unit. A transition area 21 is provided between two adjacent touch units in the same row. In the transition area 21 , the two touch units are coupled through four sensing electrodes RX12 to RX15 . Taking the touch control unit where the driving electrode TX0 is located as an example, outside the transition area 21, the sensing electrodes RX0-RX11 are respectively coupled with the driving electrodes TX0 on both sides, that is, each of the sensing electrodes RX0-RX11 is connected with the two driving electrodes TX0 Coupling. In the transition area 21, the sensing electrodes RX12-RX15 are only coupled with one side of the driving electrode TX0, that is, each of the sensing electrodes RX12-RX15 is only coupled with one driving electrode TX0, that is, in this touch In the cell, the coupling ratio between the driving electrode and the sensing electrode in the transition region 21 and the region outside the transition region 21 is 1:2. The same is true for other touch units. This will result in uneven coupling of mutual capacitance and self-capacitance between the driving electrodes and the sensing electrodes, resulting in inconsistent touch sensitivity in the touch area.

FIG. 3 is a schematic structural diagram of a touch substrate according to an embodiment of the present disclosure. As shown in FIG. 3 , the touch control substrate provided by the embodiment of the present disclosure may include: a base substrate; a plurality of touch control units located on the base substrate, and the plurality of touch control units may be disposed on the base substrate in an array distribution. side. Wherein, each touch unit includes at least two first electrodes and at least two second electrodes arranged at intervals, and in the same touch unit, the at least two second electrodes are located in the at least two Between the first electrodes, and between two adjacent touch units in the same row, no second electrodes are provided. That is to say, at least two first electrodes in each touch unit are arranged at intervals, and the second electrodes are located between two adjacent first electrodes. arrangement between control units. Therefore, between two adjacent touch units, in the transition area 31, the two first electrodes are directly adjacent to each other, that is, there is no second electrode disposed between the two first electrodes, so that the same touch In the control unit, each second electrode can be coupled with the first electrodes on both sides, so that the coupling ratio between the first electrode and the second electrode at any position is 1:1, that is, the first electrode The coupling of self-capacitance and mutual capacitance between the electrode and the second electrode is evenly distributed, which ensures the consistency of touch sensitivity in the touch area.

In some embodiments of the present disclosure, optionally, at least two first electrodes in the same touch unit are arranged at intervals in the row direction, that is, in the same touch unit, all the first electrodes are located in in the same direction (row direction) and arranged at intervals.

In other embodiments of the present disclosure, optionally, in the same touch unit, at least two second electrodes are included between two adjacent first electrodes, and at least two adjacent first electrodes are included between two adjacent first electrodes. The two second electrodes are spaced apart in the column direction. That is to say, in the same touch unit, at least two second electrodes are included between every two adjacent first electrodes, and at least two second electrodes disposed between two adjacent first electrodes The two electrodes are arranged at intervals in the column direction, wherein the column direction and the row direction are perpendicular to each other. Therefore, in the same touch unit, each first electrode corresponds to at least two second electrodes. The symmetrical electrode arrangement can reduce the touch failure area caused by the traces of the first electrode and the second electrode being distributed in the touch area, and can also meet the needs of electrode signal processing at the head and tail ends.

In the embodiment of the present disclosure, optionally, in the same touch unit, the length of the first electrode in the column direction is the same as the length in the column direction of the at least two second electrodes located between two adjacent first electrodes in the column direction. occupy the same or approximately the same length of the area. That is to say, the length of the area occupied by the at least two second electrodes located between the two adjacent first electrodes in the column direction may be equal to the length of the first electrodes in the column direction, or may be slightly smaller than the length of the first electrodes The length in the column direction, so as to avoid the problem that the second electrode protrudes from the first electrode in the column direction, which leads to the problem of inconvenient arrangement of the touch control unit in the column direction, and the two are approximately the same. The two electrodes effectively cover the touch area and improve the touch sensitivity.

In the embodiment of the present disclosure, optionally, the number of the second electrodes between every two adjacent first electrodes is equal, that is, in each touch unit, two adjacent first electrodes are equal in number. The number of the second electrodes between the electrodes is equal to ensure consistent touch sensitivity. In an optional implementation manner, in the touch control unit, the number of the second electrodes arranged between every two adjacent first electrodes is 3, that is, one first electrode corresponds to on 3 second electrodes. In another optional implementation manner, in the touch control unit, the number of the second electrodes arranged between every two adjacent first electrodes is 4, that is, one first electrode Corresponds to 4 second electrodes. Of course, it can be known that under the concept of the present disclosure, one first electrode may also correspond to two second electrodes, five second electrodes, six second electrodes, etc., which is not specifically limited in the present disclosure.

In the embodiment of the present disclosure, optionally, the first electrode may be a driving electrode, and the second electrode may be a sensing electrode, or, the first electrode may be a sensing electrode, and the second electrode may be drive electrodes.

Exemplarily, as shown in FIG. 3, FIG. 3 includes four touch control units, first electrodes TX0 to TX3, and second electrodes RX0 to RX15, forming an arrangement in which one first electrode corresponds to four second electrodes. , thereby having equal mutual capacitance in all nodes, and each second electrode having equal self-capacitance.

According to the touch substrate of the embodiment of the present disclosure, since the second electrodes in the same touch unit are located between the first electrodes, there is no second electrode between the first electrodes of adjacent touch units, thereby realizing any position The coupling ratio between the mutual capacitance and the self-capacitance between the electrodes is 1, which ensures the sensitivity of the touch.

Another embodiment of the present disclosure further provides a touch display panel, the touch display panel includes the touch substrate described in the above embodiments, and further provided between the substrate substrate and the touch unit A display module is provided to realize the touch display function. In the touch substrate in the above embodiment, the coupling between the self-capacitance and the mutual capacitance between the first electrode and the second electrode is evenly distributed, which ensures the consistency of the touch sensitivity in the touch area. The control display panel also has the above beneficial effects, which are not repeated here in order to avoid repetition.

Yet another embodiment of the present disclosure further provides a touch display device, the touch display device includes the touch display panel described in the above embodiments, and the touch display device also has the touch display panel described above. The beneficial effects are not repeated here in order to avoid repetition.

The above are some embodiments of the present disclosure, it should be pointed out that for those skilled in the art, without departing from the principles of the present disclosure, several improvements and modifications can be made, and these improvements and modifications can also be It should be regarded as the protection scope of the present disclosure.

Claims

A touch substrate, comprising:

substrate substrate;

A plurality of touch control units are distributed in an array on the base substrate, and each touch control unit includes at least two first electrodes and at least two second electrodes arranged at intervals. The at least two second electrodes are both located between the at least two first electrodes, and no second electrodes are disposed between two adjacent touch control units in the same row.
The touch substrate according to claim 1, wherein at least two first electrodes in the same touch unit are arranged at intervals in a row direction.
The touch substrate according to claim 2, wherein, in the same touch unit, at least two second electrodes are included between two adjacent first electrodes, and at least two second electrodes are included between two adjacent first electrodes. The second electrodes are spaced apart in the column direction.
The touch substrate according to claim 1, wherein, in the same touch unit, the length of the first electrode in the column direction is the same as that of the at least two second electrodes located between two adjacent first electrodes in the column direction The length of the area occupied by the top is the same or approximately the same.
The touch substrate according to claim 1, wherein, in the same touch unit, the number of the second electrodes between every two adjacent first electrodes is equal.
The touch substrate according to claim 1, wherein the number of the second electrodes arranged between every two adjacent first electrodes in the touch control unit is three.
The touch substrate according to claim 1, wherein the number of the second electrodes arranged between every two adjacent first electrodes in the touch control unit is four.
The touch substrate according to claim 1, wherein the first electrode is a driving electrode and the second electrode is a sensing electrode, or the first electrode is a sensing electrode and the second electrode is a driving electrode .
A touch display panel, comprising the touch substrate according to any one of claims 1-8.
A touch display device, comprising the touch display panel according to claim 9 .