CN108874222A - Touch substrate, touch screen and touch device - Google Patents

Abstract

The present invention provides a kind of touch base plate, touch screen and touch device, be related to technical field of touch control, it can be achieved that touch base plate side touch-control accurate touch-control report point.The touch base plate includes：Substrate；Substrate includes：Middle part, the bending part positioned at at least side of middle part；It include main Touch Zone on middle part；It include the auxiliary Touch Zone being connected with main Touch Zone at least one bending part；The first touch module being set in main Touch Zone, the first touch module are configured as the first touch control input signal that sensing is located at main Touch Zone；It is set to the second touch module of auxiliary Touch Zone, the second touch module is configured as the second touch control input signal that sensing is located at auxiliary Touch Zone；Wherein, the second touch module includes：The first auxiliary touch control electrode being oppositely arranged and the second auxiliary touch control electrode, the first auxiliary touch control electrode are configured to form mutual capacitance with the second auxiliary touch control electrode.

Description

Touch substrate, touch screen and touch device

technical field

The invention relates to the field of touch technology, in particular to a touch substrate, a touch screen and a touch device.

Background technique

With the development of display technology, touch panel (Touch Panel) technology has entered a period of rapid development. According to the sensing principle of touch, touch screens can be divided into resistive touch screens and capacitive touch screens. Since the capacitive touch screen has the characteristics of high penetration, precise and sensitive positioning, good touch feeling and long service life, it has attracted more and more attention. For example, the share of touch screens in intelligent terminal products (such as smartphones and tablet computers) has surpassed that of resistive touch screens.

Contents of the invention

Embodiments of the invention provide a touch substrate, a touch screen, and a touch device, which can realize precise touch reporting by side touch of the touch substrate.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In one aspect, a touch control substrate is provided, the touch control substrate includes: a substrate; the substrate includes: a middle part, a bending part located on at least one side of the middle part; the middle part includes Main touch area; at least one of the bending parts includes an auxiliary touch area connected to the main touch area; a first touch module arranged in the main touch area, the first The touch module is configured to sense the first touch input signal located in the main touch area; the second touch module is arranged in the auxiliary touch area, and the second touch module is configured In order to sense the second touch input signal located in the auxiliary touch area; wherein, the second touch module includes: a first auxiliary touch electrode and a second auxiliary touch electrode arranged oppositely, the first auxiliary touch electrode An auxiliary touch electrode and the second auxiliary touch electrode are configured to form a mutual capacitance.

Optionally, the first touch module includes: a plurality of first main touch electrodes arranged in sequence and a plurality of second main touch electrodes arranged in sequence, the first main touch electrodes and the second main touch electrodes Two main touch electrodes are intersected; the first main touch electrode includes: a plurality of first sub-electrodes arranged at intervals along the first direction, and a first bridge electrode connecting two adjacent first sub-electrodes; The second main touch electrode includes: a plurality of second sub-electrodes arranged at intervals along the second direction, and a second bridging electrode connecting two adjacent second sub-electrodes; wherein, the first sub-electrode and the second sub-electrodes are The second sub-electrodes are arranged on the same layer; the intersection positions between the first bypass electrodes and the second bypass electrodes are separated by insulating patterns.

Optionally, the middle part further includes: a wiring collection area located on one side of the main touch area along the second direction; the bending part is arranged on the main touch area along the second direction At least one of the two sides of a direction; at least one of the first main touch electrodes extends into the adjacent auxiliary touch area, and the first main touch electrode extends into the adjacent auxiliary touch area The part in the touch area is one of the first auxiliary touch electrodes; the second auxiliary touch electrodes are arranged on the same layer as the second main touch electrodes.

Optionally, the part of the first main touch electrode extending into the adjacent auxiliary touch area is a plurality of spaced apart rectangular blocks; the shape of the second auxiliary touch electrode is a rectangle; wherein, the The second auxiliary touch electrode is disposed between two adjacent rectangular blocks, or the second auxiliary touch electrode is disposed on a side of each rectangular block away from the main touch area.

Optionally, the part of the first main touch electrode extending into the adjacent auxiliary touch area is a plurality of triangular blocks; the shape of the second auxiliary touch electrode is a triangle; wherein, the second At least some of the auxiliary touch electrodes are disposed between two adjacent triangular blocks.

Optionally, the area of a part of one first main touch electrode extending into the adjacent auxiliary touch area is smaller than the area of one of the first sub-electrodes adjacent to the auxiliary touch area; each of the The area of the second auxiliary touch electrode is smaller than the area of one of the first sub-electrodes close to the auxiliary touch area.

Optionally, the touch control substrate further includes: a first wiring electrically connected to each of the first main touch electrodes; a first wiring electrically connected to each of the second main touch electrodes; Two wires; a third wire electrically connecting all the second auxiliary touch electrodes; the number of the bending parts is two, one of which is the first bending part and the other is the second bending part; The first bending part includes the auxiliary touch area; the number of the first main touch electrodes is M, M>1, and the Mth first main touch electrode is close to the wiring. Area setting; the first main touch electrodes extending into the adjacent auxiliary touch area are N consecutively arranged, 1≤N<M; N of the N first main touch electrodes are electrically connected The first traces are all arranged on the second bending part and extend into the trace collection area; the rest of the first traces electrically connected to the rest of the first main touch electrodes are It is arranged on the first bending part and extends into the wire collection area; each of the second wires electrically connected to the second main touch electrodes is arranged in the wire collection area Inside.

Optionally, the touch control substrate further includes: a ground wire disposed between the third wire and the first wire; wherein, the ground wire is located outside the auxiliary touch area, and Extending into the wire collection area; the ground wire is configured such that one end close to the auxiliary touch area is suspended, and the other end far away from the auxiliary touch area is grounded.

Optionally, the touch control substrate further includes: a first wiring electrically connected to each of the first main touch electrodes; a first wiring electrically connected to each of the second main touch electrodes; Two wires; a third wire electrically connecting all the second auxiliary touch electrodes; the number of the bending parts is two, one of which is the first bending part and the other is the second bending part; The first bending part includes the auxiliary touch area; the third wiring is arranged on the first bending part and extends into the wiring collection area; electrically connected to the first Each of the first wires of a main touch electrode is arranged on the second bending part and extends into the wire collection area; electrically connected to each of the second main touch electrodes The second wires are all arranged in the wire collection area.

Optionally, in each of the first main touch electrodes, except for the first first touch sub-electrode and the last first touch sub-electrode, the rest of the first touch sub-electrodes The shapes of the electrodes are rhombus; in each of the second main touch electrodes, except for the first second touch sub-electrode and the last second touch sub-electrode, the rest of the second touch sub-electrodes are The shape of the touch sub-electrodes is rhombus.

In another aspect, a touch screen is provided, comprising the touch substrate described in any one of the above.

Optionally, it further includes: a display panel; the touch control substrate is disposed on the light-emitting side of the display panel.

In yet another aspect, a touch device is provided, including the above-mentioned touch screen.

Based on this, the above-mentioned touch control substrate provided by the embodiment of the present invention is provided on at least one bent portion (that is, the side surface of the touch control substrate) with the first auxiliary touch control electrode and the second auxiliary touch control electrode that are oppositely arranged to form mutual capacitance Auxiliary touch electrodes, so that the touch substrate can realize the touch sensing function on at least two different planes, and the auxiliary touch area located on the bending part can be accurately touched by using the principle of mutual capacitance touch control point.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a touch screen provided by the related art;

Fig. 2 is a schematic side view of a touch substrate provided by an embodiment of the present invention;

FIG. 3 is a first schematic plan view of a touch substrate provided by an embodiment of the present invention;

FIG. 4 is a second schematic plan view of a touch substrate provided by an embodiment of the present invention;

FIG. 5 is a third schematic diagram of a planar structure of a touch substrate provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram 4 of a planar structure of a touch substrate provided by an embodiment of the present invention;

FIG. 7 is a schematic plan view five of a touch substrate provided by an embodiment of the present invention;

FIG. 8 is an enlarged structural schematic diagram of part A in FIG. 3 .

Reference signs:

10-substrate; 11-middle part; 12-bending part; T1-main touch area; T2-auxiliary touch area; S-wire collection area;

D1-first direction; D2-second direction;

21-the first touch module;

211-the first main touch electrode; 211a-the first sub-electrode; 211b-the first bridging electrode;

212-the second main touch electrode; 212a-the second sub-electrode; 212b-the second bridge electrode;

213-insulation pattern;

22-the second touch module; 221-the first auxiliary touch electrode; 222-the second auxiliary touch electrode;

231 - the first wiring; 232 - the second wiring; 233 - the third wiring; 234 - the ground wire.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

The terms "upper/upper", "lower/lower", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of simplifying the description of the technical solution of the present invention, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In the related art, the capacitive touch screen can adopt a two-layer patterned indium tin oxide layer structure bonded by optical glue, and an example of the substrate can be a glass substrate or a plastic substrate.

Considering the durability and stability of the touch screen, the touch screen is usually designed to sense input signals on a single plane. When applied to electronic devices such as mobile phones and tablet computers, it is usually necessary to design physical buttons on the side of the screen of the electronic device to realize functions such as volume control and power on/off.

As an example, in the related art, as shown in FIG. 1 , the touch screen has a side-bending structure. That is, a layer of rectangular conductive electrodes is added to the bent portion 125 of the transparent substrate 12, and each rectangular conductive electrode is used as a side touch sensing electrode 18. out) electrical connection. When the finger touches the side of the touch screen, it forms a self-capacitance with the side touch sensing electrode 18, thereby forming a side touch area in a self-capacitance manner, and then realizing touch on the plane and the side of the touch screen operate. However, limited by the identification mode of the self-capacitance, in the side touch area, it is only possible to simply feedback whether there is a touch signal in this part of the area, and it is impossible to accurately feedback the coordinates of the touch point.

An embodiment of the present invention provides a touch control substrate. As shown in FIG. 2 to FIG. 7 , the touch control substrate includes: a substrate 10; Folding part 12; the middle part 11 includes a main touch area T1; at least one of the bending parts 12 includes an auxiliary touch area T2 connected to the main touch area T1; a first touch area disposed in the main touch area T1 The touch module 21, the first touch module 21 is configured to sense the first touch input signal located in the main touch area T1; the second touch module 22 arranged in the auxiliary touch area T2, the second The touch module 22 is configured to sense the second touch input signal located in the auxiliary touch area T2; wherein, the second touch module 22 includes: a first auxiliary touch electrode 221 and a second auxiliary touch electrode 221 arranged opposite to each other. The control electrode 222, the first auxiliary touch electrode 221 and the second auxiliary touch electrode 222 are configured to form a mutual capacitance.

It should be noted that, first, considering that the above-mentioned touch substrate is applied to a display device, the above-mentioned substrate 10 may be, for example, a transparent or highly permeable insulating substrate. Wherein, the middle portion 11 is generally a flat area of the substrate 10 .

Each electrode is made of a transparent or highly transparent electrode material, such as ITO (Indium Tin Oxide, Indium Tin Oxide), or IZO (Indium Zinc Oxide, Indium Zinc Oxide), or FTO (Fluorine-Doped Tin Oxide, Fluorine doped tin dioxide).

Second, when the bending portion 12 is only located on one side of the middle portion 11, the bending portion 12 includes an auxiliary touch area T2 connected to the main touch area T1, thereby realizing the Touch in two planes on part 12. When there are multiple bending parts 12, each bending part 12 may include an auxiliary touch area T2 connected to the main touch area T1, that is, the middle part 11 and multiple bending parts 12 may be connected to each other. or, only one of the bent portions 12 includes an auxiliary touch area T2 connected to the main touch area T1.

The number of the bending portion 12 and/or the auxiliary touch area T2 can be flexibly adjusted according to specific user needs or product design, which is not limited in the embodiment of the present invention, as long as the bending portion 12 is located on at least one side of the middle portion 11, and at least It only needs to include an auxiliary touch area T2 connected to the main touch area T1 on one bending part 12, so that the touch-capable area extends from a plane of the main touch area T1 to at least one auxiliary touch area T2 In this way, different planes are realized to sense touch input signals.

In the above-mentioned figure 2, there are only two bent parts 12, and the two bent parts 12 are respectively located on one side edge of the middle part 11 and the opposite side edge, and one of the bent parts 12 includes a The auxiliary touch area T2 connected to the touch area T1 is taken as an example.

Moreover, the bending angle of the bending portion 12 relative to the middle portion 11 shown in FIG. 2 is only for illustration, and the bending angle can be flexibly adjusted according to the above-mentioned design requirements of the touch control substrate.

The bending portion 12 includes but is not limited to bending along the manner shown in FIG. 2 above, that is, the bending portion 12 can be bent toward any side of the two sides of the substrate 10 .

When the above-mentioned touch substrate is applied to the display panel, the touch substrate is usually arranged above the display surface of the display panel. For the convenience of the user's operation, the bending part 12 is preferably toward the side of the substrate 10 close to the display panel. Make a bend.

Third, the embodiment of the present invention does not limit the specific structure of the first touch module 21 disposed in the main touch area T1, as long as it can sense the first touch input signal implemented by the user in the main touch area T1 That is, an example may be an operation for the user to select an application program (that is, APP, Application), or an operation for the user to input a password, and so on.

Since the above-mentioned touch substrate is usually applied to a display device, the main touch area T1 may correspond to the effective display area (ie AA area, Active Area) of the display panel, and the auxiliary touch area connected to the main touch area T1 The zone T2 is the zone extending from the AA zone to the bending portion.

Fourth, referring to FIG. 3 to FIG. 7 , the second touch module 22 includes: a first auxiliary touch electrode 221 and a second auxiliary touch electrode 222 oppositely arranged, and the first auxiliary touch electrode 221 and the second auxiliary touch electrode 221 The auxiliary touch electrodes 222 are configured to form a mutual capacitance.

The first auxiliary touch electrode 221 and the second auxiliary touch electrode 222 are disposed opposite to each other, which means that there is a facing area between them to form a mutual capacitance (ie, coupling capacitance C _M ).

The number of the first auxiliary touch electrodes 221 and the second auxiliary touch electrodes 222 and the specific pattern of the electrodes can be flexibly adjusted according to the area of the auxiliary touch area T2 and the set touch accuracy of the auxiliary touch area T2. The example is not limited to this, and the above Fig. 3 to Fig. 7 are only examples.

When a finger or a stylus touches one side of the second touch module 22, the finger or the stylus will affect the coupling between the first auxiliary touch electrode 221 near the contact point and the opposite second auxiliary touch electrode 222. , thereby changing the mutual capacitance between the two opposite electrodes. An example of the first auxiliary touch electrode 221 may be a touch sensing electrode (Rx), and an example of the opposite second auxiliary touch electrode 222 may be a touch scanning electrode (Tx). The variation of the mutual capacitance can calculate the coordinates of the touch point, so as to realize the touch control.

Since the auxiliary touch area T2 is a side touch area extending from the main touch area T1, the position of this area is usually fixed. Virtual buttons are set in the extended display area of the control area T2, and each virtual button can realize the same function as the physical buttons on the side of the touch screen in electronic devices such as mobile phones and tablet computers, such as realizing the functions of switching and volume control, thereby Touching in different planes is realized.

Based on this, the above-mentioned touch substrate provided by the embodiment of the present invention is provided on at least one bending portion 12 (that is, the side surface of the touch substrate) with the oppositely arranged first auxiliary touch electrodes 221 and The second auxiliary touch electrode 222 enables the touch substrate to realize the touch sensing function on at least two different planes, and utilizes the principle of mutual capacitance touch to enable the auxiliary touch area on the bending part to perform Precise touch reporting.

In some embodiments of the present invention, as shown in FIG. 3 to FIG. 7 , the above-mentioned first touch module 21 includes:

A plurality of first main touch electrodes 211 arranged in sequence and a plurality of second main touch electrodes 212 arranged in sequence, the first main touch electrodes 211 and the second main touch electrodes 212 are intersected; the first main touch electrodes 211 includes: a plurality of first sub-electrodes 211a arranged at intervals along the first direction (marked as D1 in FIGS. The control electrode 212 includes: a plurality of second sub-electrodes 212a arranged at intervals along the second direction (marked as D2) in FIGS. A sub-electrode 211a and the second sub-electrode 212a are arranged on the same layer; the crossing positions between the first bridge electrode 211b and the second bridge electrode 212b are separated by insulating patterns.

It should be noted that the above-mentioned first main touch electrodes 211 may be touch sensing electrodes (Rx), and the second main touch electrodes 212 may be touch scanning electrodes (Tx). Thus, the plurality of first sub-electrodes 211a arranged along the first direction constituting the first main touch electrode 211 and the plurality of second sub-electrodes 212a arranged along the second direction constituting the second main touch electrode 212 have an opposite part, so that the first sub-electrode 211a and the second sub-electrode 212a arranged in the same layer close to each other form a mutual capacitance (that is, a coupling capacitance C _M ).

Wherein, the above-mentioned first direction D1 and the second direction D2 only need to have a certain angle so that the first main touch electrodes 211 and the second main touch electrodes 212 are intersected. An example of the included angle can be 90 degrees, that is, the first direction D1 is the row direction, and the second direction D2 is the column direction, so as to simplify the design and arrangement of the electrodes and better match the main touch area T1 is usually required for rectangular designs.

For example, in order to make the patterns of the first sub-electrode 211a and the second sub-electrode 212a as close as possible and make full use of the area of the main touch area T1, so as to improve the detection range of touchable points, each of the above-mentioned first sub-electrodes In the main touch electrode 211, except for the first first touch sub-electrode 211a and the last first touch sub-electrode 211a, the shape of the other first touch sub-electrodes 211a is rhombus; similarly, in the above In each second main touch electrode 212 , except for the first second touch sub-electrode 212 a and the last second touch sub-electrode 212 a , the shape of the other second touch sub-electrodes 212 a is rhombus.

Here, the expressions of "the first" and "the last" are only used to distinguish the two first touch sub-electrodes 211a on the most two sides arranged along the first direction in each first main touch electrode 211; Similarly, the expressions "first" and "last" above are only used to distinguish the two second touch sub-electrodes 212a arranged along the second direction on both sides of each second main touch electrode 212 .

Moreover, considering that the shape of the main touch area T1 is usually rectangular, therefore, in each first main touch electrode 211, the shape of the two first touch sub-electrodes 211a at the most two sides can be half of a rhombus. , that is, can be triangular to ensure that there is no touch blind area at the edge of the main touch area T1; similarly, in each second main touch electrode 212, the two second touch sub-electrodes 212a on the most two sides The shape of can be half of a rhombus, that is, can be a triangle, so as to ensure that there is no touch blind area at the edge of the main touch area T1.

Here, due to the limitation of the above-mentioned drawings in FIG. 3 to FIG. 7 , the insulating pattern between the first bypass electrode 211 b and the second bridge electrode 212 b is not shown in FIG. 3 to FIG. 7 . As specifically shown in the enlarged schematic diagram of FIG. 8 , the crossing positions between the first bridge electrodes 211 b and the second bridge electrodes 212 b are isolated by insulating patterns 213 . The pattern of the insulating pattern 213 includes but is not limited to the circular shape shown in FIG. 8 , as long as the intersection position between the first bypass electrode 211b and the second bridge electrode 212b can be isolated.

Moreover, the patterns of the first bridge electrodes 211b and the second bridge electrodes 212b and their upper and lower positions relative to the middle portion 11 are only for illustration. For example, the second bridge electrodes 212b may also be arranged above the first bridge electrodes 211b.

In some embodiments of the present invention, as shown in FIG. 3 to FIG. 7 , the middle portion 11 further includes: a wire gathering area S located on one side of the main touch area T1 along the second direction. Since the wiring and other structures in the wiring collection area S will be bound to the touch IC (Integrated Circuit, integrated circuit) later, in order to facilitate the bending of the bending part 12 (bending lines are shown in Figures 3 to 7 As shown by the dotted line in ), the bending portion 12 is disposed on at least one of the two sides of the main touch area T1 along the first direction.

For example, in order to reduce the structural complexity of the above-mentioned touch substrate, at least one first main touch electrode 211 extends into the adjacent auxiliary touch area T2, and the first main touch electrode 211 extends into the adjacent auxiliary touch area The part in T2 is a first auxiliary touch electrode 221 ; the second auxiliary touch electrode 222 is disposed on the same layer as the aforementioned second main touch electrode 212 .

It should be noted that the above-mentioned "disposition on the same layer" means that the above-mentioned second auxiliary touch electrode 222 and the above-mentioned second main touch electrode 212 are all arranged on the same structural member, and the structural member can be the above-mentioned lining. The bottom 10 may also be other insulating layers or the like provided on the above-mentioned substrate 10 .

Since the first main touch electrode 211 and the second main touch electrode 212 are arranged on the same layer, and the first auxiliary touch electrode 221 is a part of the first main touch electrode 211 extending into the adjacent auxiliary touch area T2, so The second auxiliary touch electrode 222 disposed on the same layer as the second main touch electrode 212 is also disposed on the same layer as the first auxiliary touch electrode 221 , and their opposite parts form a mutual capacitance (ie, coupling capacitance C _M ).

In the above-mentioned FIGS. 3 to 7 , the bending portion 12 is disposed on both sides of the main touch area T1 along the first direction (ie, the left and right sides of the paper).

Among them, the specific structure of the touch substrate shown in Fig. 3, Fig. 4 and Fig. 5 is: one of the bending parts 12 includes an auxiliary touch area T2, and is provided with a corresponding second touch module 22, and only Part of the first main touch electrode 211 extends into the adjacent auxiliary touch area T2; the specific structure of the touch substrate shown in FIG. The second touch module 22, and all the first main touch electrodes 211 extend into the adjacent auxiliary touch area T2; the specific structure of the touch substrate shown in FIG. There is an auxiliary touch area T2, and a corresponding second touch module 22 is provided, and part of the first main touch electrode 211 extends into an adjacent auxiliary touch area T2, and another part of the first main touch electrode 211 Extending into another adjacent auxiliary touch area T2.

In the auxiliary touch area T2, the shape and arrangement of the first auxiliary touch electrodes 221 and the second auxiliary touch electrodes 222 may be:

As an optional way, as shown in FIG. 3 , FIG. 6 and FIG. 7 , the part of the above-mentioned first main touch electrode 211 extending into the adjacent auxiliary touch area T2 is a plurality of spaced apart rectangular blocks; The shape of the two auxiliary touch electrodes 222 is a rectangle; wherein, the second auxiliary touch electrodes 222 are arranged between the two adjacent rectangular blocks.

In this way, the second auxiliary touch electrode 222 is interspersed between the first main touch electrode 211 extending into the adjacent auxiliary touch area T2 as the first auxiliary touch electrode 221, which can improve the auxiliary touch area. Area utilization of T2.

Or, as another alternative, as shown in FIG. 4 , the part of the above-mentioned first main touch electrode 211 extending into the adjacent auxiliary touch area T2 is a plurality of spaced apart rectangular blocks; The shape of the control electrode 222 is rectangular; wherein, the second auxiliary touch electrode 222 is disposed on a side of each rectangular block away from the main touch area T1.

Or, as another alternative, as shown in FIG. 5 , the part of the above-mentioned first main touch electrode 211 extending into the adjacent auxiliary touch area T2 is a plurality of triangular blocks; the second auxiliary touch electrode 211 222 is triangular in shape; wherein, at least part of the second auxiliary touch electrode 222 is arranged between two adjacent triangular blocks, so that there is a relative relationship between the second auxiliary touch electrode 222 and the first main touch electrode 211. part, thereby forming a mutual capacitance (that is, coupling capacitance C _M ).

In this way, a column of first auxiliary touch electrodes 221 along the second direction and an opposite column of second auxiliary touch electrodes 222 both form a sawtooth-like structure, and each triangular block is close to each other in pairs to form a mutual capacitance ( That is, the coupling capacitance C _M ).

Wherein, the above-mentioned first main touch electrode 211 extends into a plurality of triangular blocks (for example, two) in the adjacent auxiliary touch area T2, which can be connected or spaced apart, and can be flexibly adjusted according to design parameters such as the substrate size. , which is not limited in this embodiment of the present invention.

A row of triangular-shaped second auxiliary touch electrodes 222 may be directly connected together, or may be connected through wiring, which is not specifically limited.

In the various manners above, in order to avoid increasing the frame width, preferably, the area of the part of the first main touch electrode 211 extending into the adjacent auxiliary touch region T1 is smaller than that of a first sub-touch electrode 211 adjacent to the auxiliary touch region T1. The area of the electrode 211a (an example may be a triangle); similarly, the area of each second auxiliary touch electrode 222 is smaller than the area of a first sub-electrode 211a (an example may be a triangle) close to the auxiliary touch area T1.

Considering that the above-mentioned touch substrate needs to be provided with wires connected to the electrodes, if the auxiliary touch area T2 and the corresponding second touch module 22 are arranged on both sides of the main touch area T1, it is possible The width of the bent portion 12 will be increased, so that the frame width will be increased after the above-mentioned touch substrate is applied to a display device.

Therefore, the embodiment of the present invention is preferred. Referring to the above-mentioned figures 3 to 6, the number of the above-mentioned bending parts 12 is two, one of which is the first bending part and the other is the second bending part; The folding part includes an auxiliary touch area T2.

As an example, as shown in FIG. 3 , FIG. 4 and FIG. 5 , the above-mentioned touch substrate further includes: a first wiring 231 electrically connected to each first main touch electrode 211 ; The main touch electrodes 212 are electrically connected to the second wiring 232 one by one; the third wiring 233 is electrically connected to all the second auxiliary touch electrodes 222; wherein, the number of the first main touch electrodes 211 is M, and M> 1. The Mth first main touch electrode 211 is arranged close to the wiring collection area S; the first main touch electrodes 211 extending into the adjacent auxiliary touch area T2 are N consecutively arranged, 1≤N<M ; The N first wires 231 electrically connected to the N first main touch electrodes 211 are arranged on the second bending part and extend into the wire collection area S; electrically connected to the rest of the first main touch electrodes 211 The rest of the first traces 231 are arranged on the first bending part and extend into the trace collection area S; the second traces 232 electrically connected to the second main touch electrodes 212 are all arranged on the trace collection area S. In area S.

Here, the above M example may be 9, and the above N example may be 4.

Considering that the touch operations performed by the auxiliary touch area T2 are usually auxiliary operations such as controlling the volume, rather than for displaying large-area images, the auxiliary touch area T2 does not need to be arranged on the entire bending portion 12, as long as it is arranged on The portion of the bending portion 12, for example, can be at the upper right in the above figure. Therefore, a part of the first main touch electrode 211 is extended into the adjacent auxiliary touch area T2, and is electrically connected to the first main touch electrode 211. Each of the first wires 231 is respectively disposed on both sides of the main touch area T1, so that the frame width will not or be avoided to be increased.

For example, considering that the width of the bent portion 12 is generally small, between the second wires 232 electrically connected to the second main touch electrodes 212 and the first wires 231 electrically connected to the first main touch electrodes 211 The distance between the Tx signal and the Rx signal is very small, and the mutual interference between the Tx signal and the Rx signal is prone to occur.

Therefore, the above-mentioned touch substrate further includes: a ground wire 234 disposed between the third wire 233 and the first wire 231; wherein, the ground wire 234 is located outside the auxiliary touch area T2 and extends into the wire collection area S; the ground wire 234 is configured such that one end close to the auxiliary touch area T2 is suspended, and the other end away from the auxiliary touch area T2 is grounded

For example, the ground wire 234 may be disposed between the third wire 233 and the first wire 231 electrically connected to the (N+1)th first main touch electrode 211 .

It can be understood that the above-mentioned "suspension" means that the ground wire 234 is disconnected on this side and does not receive electrical signals; the other end away from the auxiliary touch area T2 can be connected to the touch IC to achieve the effect of grounding, for example. , to isolate the third wire 233 from the adjacent first wire 231 .

As another example, as shown in FIG. 6 , the above-mentioned touch substrate further includes: a first wiring 231 electrically connected to each first main touch electrode 211 ; The second wiring 232 electrically connected one by one; the third wiring 233 electrically connecting all the second auxiliary touch electrodes 222; wherein, the third wiring 233 is arranged on the first bending part and extends to the wiring collection In the region S; the first traces 231 electrically connected to the first main touch electrodes 211 are arranged on the second bending part and extend to the trace collection area S; electrically connected to the second main touch electrodes 212 Each of the second wires 232 is set in the wire collection area S.

It can be understood that since the third traces 233 electrically connecting all the second auxiliary touch electrodes 222 are arranged on the second bending part, the second touch module 22 and its specific structure are also arranged on the second bending part. On the second bending part.

That is, each of the first wires 231 is disposed on one side of the main touch area T1 along the first direction, and the second touch module 22 is disposed on the other side. Since the third wiring 233 electrically connecting all the second auxiliary touch electrodes 222 is far away from the first wiring 231, there is no need to set a ground to isolate the signal on the first wiring 231 from the signal on the third wiring 233. Line up.

It should be noted that when all the first wires 231 are arranged on one side of the main touch area T1 along the first direction, and the second touch module 22 is arranged on the other side, all of them may be Or part of the first main touch electrodes 211 extend into the adjacent auxiliary touch area T2. The above FIG. 6 only shows the situation that all the first main touch electrodes 211 extend into the adjacent auxiliary touch area T2. , the above embodiment is also applicable to the case where part of the first main touch electrode 211 extends into the adjacent auxiliary touch area T2, and the specific structure will not be repeated here.

On the basis of the above, an embodiment of the present invention further provides a touch screen, including any one of the above touch substrates.

In an embodiment of the present invention, the above-mentioned touch screen further includes: a display panel; and the touch substrate is disposed on the light-emitting side of the display panel.

Wherein, the above-mentioned display panel may be a liquid crystal display panel, an organic electroluminescent diode display panel, etc., which are not specifically limited in this embodiment of the present invention.

Further, an embodiment of the present invention also provides a touch device, including the above touch screen.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (13)

1. A touch substrate, characterized in that, the touch substrate comprises: Substrate; the substrate includes: a middle part, a bent part located on at least one side of the middle part; the middle part includes a main touch area; at least one of the bent parts includes a an auxiliary touch area connected to the main touch area; a first touch module disposed in the main touch area, the first touch module configured to sense a first touch input signal located in the main touch area; a second touch module disposed in the auxiliary touch area, the second touch module configured to sense a second touch input signal located in the auxiliary touch area; Wherein, the second touch module includes: a first auxiliary touch electrode and a second auxiliary touch electrode arranged opposite to each other, and the first auxiliary touch electrode and the second auxiliary touch electrode are configured to form mutual capacitance. 2. The touch substrate according to claim 1, wherein the first touch module comprises: A plurality of first main touch electrodes arranged in sequence and a plurality of second main touch electrodes arranged in sequence, the first main touch electrodes and the second main touch electrodes are arranged to cross; The first main touch electrode includes: a plurality of first sub-electrodes arranged at intervals along the first direction, and a first bridge electrode connecting two adjacent first sub-electrodes; The second main touch electrode includes: a plurality of second sub-electrodes arranged at intervals along the second direction, and a second bridge electrode connecting two adjacent second sub-electrodes; Wherein, the first sub-electrode and the second sub-electrode are arranged in the same layer; the crossing positions between the first bypass electrode and the second bypass electrode are separated by an insulating pattern. 3. The touch substrate according to claim 2, characterized in that, The middle part further includes: a wire gathering area located on one side of the main touch area along the second direction; The bending portion is disposed on at least one of two sides of the main touch area along the first direction; At least one of the first main touch electrodes extends into the adjacent auxiliary touch area, and the part of the first main touch electrode extending into the adjacent auxiliary touch area is one of the first Auxiliary touch electrodes; The second auxiliary touch electrodes are arranged on the same layer as the second main touch electrodes. 4. The touch substrate according to claim 3, wherein the part of the first main touch electrode extending into the adjacent auxiliary touch area is a plurality of spaced apart rectangular blocks; The shape of the second auxiliary touch electrode is a rectangle; Wherein, the second auxiliary touch electrode is arranged between two adjacent rectangular blocks, or the second auxiliary touch electrode is arranged on a side of each rectangular block away from the main touch area. side. 5. The touch substrate according to claim 3, wherein the part of the first main touch electrode extending into the adjacent auxiliary touch area is a plurality of triangular blocks; The shape of the second auxiliary touch electrode is a triangle; Wherein, at least part of the second auxiliary touch electrode is disposed between two adjacent triangular blocks. 6. The touch substrate according to any one of claims 3 to 5, characterized in that, An area of a part of the first main touch electrode extending into the adjacent auxiliary touch area is smaller than an area of one of the first sub-electrodes adjacent to the auxiliary touch area; The area of each of the second auxiliary touch electrodes is smaller than the area of one of the first sub-electrodes close to the auxiliary touch area. 7. The touch substrate according to claim 4 or 5, wherein the touch substrate further comprises: a first wiring electrically connected to each of the first main touch electrodes; a second wiring electrically connected to each of the second main touch electrodes; electrically connecting all the third wirings of the second auxiliary touch electrodes; There are two bending parts, one of which is a first bending part and the other is a second bending part; the first bending part includes the auxiliary touch area; The number of the first main touch electrodes is M, M>1, and the Mth first main touch electrode is set close to the wiring collection area; The first main touch electrodes are N consecutively arranged, 1≤N<M; The N first wires electrically connected to the N first main touch electrodes are all arranged on the second bending part and extend into the wire gathering area; The rest of the first traces that are electrically connected to the rest of the first main touch electrodes are arranged on the first bending part and extend into the trace collection area; electrically connected to the second main touch electrodes Each of the second wires of the control electrode is arranged in the wire gathering area. 8. The touch substrate according to claim 7, further comprising: a ground wire disposed between the third trace and the first trace; Wherein, the ground wire is located outside the auxiliary touch area, and extends into the wiring collection area; The other end of the zone is grounded. 9. The touch substrate according to claim 4 or 5, wherein the touch substrate further comprises: a first wiring electrically connected to each of the first main touch electrodes; a second wiring electrically connected to each of the second main touch electrodes; electrically connecting all the third wirings of the second auxiliary touch electrodes; There are two bending parts, one of which is a first bending part and the other is a second bending part; the first bending part includes the auxiliary touch area; The third wiring is arranged on the first bending part and extends into the wiring gathering area; Each of the first wires electrically connected to the first main touch electrodes is arranged on the second bending portion and extends into the wire collection area; Each of the second wires electrically connected to the second main touch electrodes is arranged in the wire collection area. 10. The touch substrate according to claim 2, characterized in that, In each of the first main touch electrodes, except for the first first touch sub-electrode and the last first touch sub-electrode, the other first touch sub-electrodes have the same shape. is rhombus; In each of the second main touch electrodes, except for the first second touch sub-electrode and the last second touch sub-electrode, the shapes of the other second touch sub-electrodes are the same. For rhombus. 11. A touch screen, characterized by comprising the touch substrate according to any one of claims 1 to 10. 12 . The touch screen according to claim 11 , further comprising: a display panel; and the touch substrate is disposed on a light emitting side of the display panel. 13 . 13. A touch device, comprising the touch screen according to claim 11 or 12.