CN111930256A - Touch substrate and display device - Google Patents

Abstract

The disclosure provides a touch substrate and a display device. The touch substrate includes: the touch control device comprises a substrate and a touch control substrate, wherein the substrate is provided with a first area and a second area surrounding the first area, the boundary between the first area and the second area is divided into a plurality of boundary sections, and the first area corresponds to a touch control area of the touch control substrate; the touch control electrodes are arranged on the substrate base plate and are positioned in the first area, and two ends of each touch control electrode extend to the boundary; the plurality of touch control electrodes comprise a plurality of first touch control electrodes and a plurality of second touch control electrodes; one end of each signal line is configured to be connected with an external circuit interface, the other end of each signal line is connected with the corresponding touch electrodes, and the end of only one touch electrode in the end parts of the first touch electrode and the second touch electrode which extend to the same boundary section is connected with the signal line. The signal transmission process can be weakened.

Description

Touch substrate and display device

technical field

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

Background technique

Touch technology mainly includes resistive, capacitive and infrared optical. Among them, capacitive touch technology has the characteristics of responsiveness and is widely used in smart phones and tablet computers.

The display screen applying capacitive touch technology is provided with touch driving electrodes, touch sensing electrodes, signal lines and external circuit interfaces. The touch driving electrodes and the touch sensing electrodes are arranged crosswise, and the touch driving electrodes are connected to an external circuit interface through a signal line to receive a driving signal sent by the external circuit interface. The touch sensing electrodes are connected to the external circuit interface through signal lines, so that the external circuit interface receives the sensing signals generated by the touch sensing electrodes. However, the signal lines are easily overlapped, which affects the signal transmission process.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a touch substrate and a display device, which can reduce the influence on the signal transmission process.

According to an aspect of the present disclosure, there is provided a touch substrate, comprising:

a base substrate, having a circular or elliptical first area and a second area surrounding the first area, the boundary between the first area and the second area is divided into a plurality of boundary segments;

A plurality of touch electrodes are disposed on the base substrate and located in the first region, and both ends of each touch electrode extend to the boundary; the plurality of touch electrodes includes a plurality of touch electrodes A first touch electrode and a plurality of second touch electrodes, the plurality of the first touch electrodes all extend along the first direction, and the plurality of the second touch electrodes are all along the intersection with the first direction extends in the second direction;

A plurality of signal lines are arranged on the base substrate and located in the second region, one end of the plurality of signal lines is configured to be connected to an external circuit interface, and the other end of the plurality of signal lines is connected to a plurality of signal lines. The touch electrodes are connected in a one-to-one correspondence, extending to the end of the first touch electrode and the end of the second touch electrode in the same boundary segment, and there is only one end of the touch electrode. connected to the signal line.

Further, the boundary is divided into a first boundary segment, a second boundary segment, a third boundary segment and a fourth boundary segment;

The first direction is perpendicular to the second direction, one end of some of the second touch electrodes extends to the first boundary segment, and the other end extends to the second boundary segment; the remaining second touch electrodes One end of the electrodes extends to the third boundary segment, and the other end extends to the fourth boundary segment; one end of some of the first touch electrodes extends to the first boundary segment, and the other end extends to the fourth boundary segment a boundary segment; one end of the remaining first touch electrodes extends to the second boundary segment, and the other end extends to the third boundary segment;

The end of the first touch electrode extending to the first boundary segment and the end of the first touch electrode extending to the third boundary segment are both connected to the signal line; extending to the The ends of the second touch electrodes in the second boundary segment and the ends of the second touch electrodes extending to the fourth boundary segment are both connected to the signal lines.

Further, the external circuit interface is provided in the second area, and is located on the same side of the base substrate as the signal line, and is located on the side of the second boundary segment away from the first boundary segment ;

A plurality of the signal lines include:

The first wiring group includes a plurality of signal lines, and the plurality of the signal lines in the first wiring group are in one-to-one correspondence with the ends of the first touch electrodes extending to the first boundary segment connect;

A second wire group is arranged in parallel with the first wire group and includes a plurality of signal wires, the plurality of signal wires in the second wire group and all the signal wires extending to the second boundary segment The ends of the second touch electrodes are connected in a one-to-one correspondence;

The third wiring group includes a plurality of signal lines, and the plurality of the signal lines in the third wiring group are in one-to-one correspondence with the ends of the first touch electrodes extending to the third boundary segment connect;

A fourth wiring group is arranged in parallel with the third wiring group and includes a plurality of signal lines, the plurality of the signal lines in the fourth wiring group and all the signal lines extending to the fourth boundary section The ends of the second touch electrodes are connected in a one-to-one correspondence.

Further, the length of the signal line in the first wiring group is greater than the length of the signal line in the third wiring group, and the cross section of the signal line in the first wiring group The area is greater than the cross-sectional area of the signal lines in the third routing group; the length of the signal lines in the second routing group is greater than the length of the signal lines in the fourth routing group , the cross-sectional area of the signal lines in the second wiring group is larger than the cross-sectional area of the signal lines in the fourth wiring group.

Further, the pattern of the signal lines in the first wiring group and the pattern of the signal lines in the fourth wiring group are symmetrically arranged, and the signal lines in the second wiring group are arranged symmetrically. The graph of the signal line is symmetrically arranged with the graph of the signal line in the third wiring group.

Further, a plurality of the signal lines in any one of the wiring groups are arranged in parallel.

Further, the touch substrate further includes:

a first shielded wire, disposed on the base substrate, and located between the first wire set and the second wire set;

a second shielded wire, disposed on the base substrate, and located between the third wire group and the fourth wire group;

Both the first shielded wire and the second shielded wire are connected to a constant power signal terminal.

Further, the first touch electrodes are touch sensing electrodes, the second touch electrodes are touch driving electrodes, and the plurality of signal lines include a plurality of first signal lines and a plurality of second signal lines, A plurality of the first signal lines are connected to a plurality of the touch sensing electrodes in a one-to-one correspondence, and a plurality of the second signal lines are connected to a one-to-one correspondence of the plurality of the touch driving electrodes.

Further, the base substrate includes:

substrate;

a light-emitting layer, disposed on the substrate;

an encapsulation layer, disposed on the side of the light-emitting layer away from the substrate;

A plurality of the touch electrodes and a plurality of the signal lines are disposed on a side of the encapsulation layer away from the light emitting layer.

According to one aspect of the present disclosure, there is provided a display device including the touch substrate described in any one of the above.

In the touch substrate and the display device according to the embodiments of the present disclosure, a plurality of signal lines are connected to a plurality of touch electrodes in a one-to-one correspondence, and extend to the end of the first touch electrode and the end of the second touch electrode in the same boundary segment Only the end of one touch electrode is connected to the signal line, which avoids that the end of the first touch electrode and the end of the second touch electrode extending to the same boundary segment are both connected to the signal line, reducing the The number of signal lines at the boundary segment position prevents the signal lines from overlapping and reduces the influence on the signal transmission process.

Description of drawings

FIG. 1 is a schematic diagram of a touch substrate in the related art.

FIG. 2 is a partial schematic view of the structure shown in FIG. 1 .

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

FIG. 4 is another schematic diagram of a touch substrate according to an embodiment of the present disclosure.

FIG. 5 is a partial schematic diagram of a touch substrate according to an embodiment of the present disclosure.

6 is a schematic cross-sectional view of a first wiring group and a second wiring group of a touch substrate according to an embodiment of the present disclosure.

7 is a schematic cross-sectional view of a third wiring group and a fourth wiring group of a touch substrate according to an embodiment of the present disclosure.

Description of reference numerals: 1. base substrate; 101, first region; 1011, boundary segment; 1011a, first boundary segment; 1011b, second boundary segment; 1011c, third boundary segment; 1011d, fourth boundary segment; 102, the second area; 2, the touch electrodes; 201, the first touch electrodes; 202, the second touch electrodes; 3, the signal lines; 301, the first wiring group; 3011, the first signal lines; 302, The second wiring group; 3021, the second signal line; 303, the third wiring group; 304, the fourth wiring group; 4, the external circuit interface; layer; 8. interlayer insulating layer; 9. protective layer; 10. second shielding wire; 11. touch substrate.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of means consistent with some aspects of the present disclosure, as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to limit the present disclosure. Unless otherwise defined, technical or scientific terms used in this disclosure should have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. As used in this disclosure and in the claims, "first," "second," and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish the various components. Likewise, "a" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one. "Plural" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and/or "upper" are for convenience of description and are not limited to one location or one spatial orientation. Words like "include" or "include" mean that the elements or items appearing before "including" or "including" cover the elements or items listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

In the related art, as shown in FIG. 1 and FIG. 2 , the touch substrate 11 includes first touch electrodes 201 and second touch electrodes 202 which are arranged in an intersecting manner. Both the first touch electrodes 201 and the second touch electrodes 202 need to be connected to an external circuit interface through signal lines 3 , resulting in a large number of signal lines 3 disposed in a part of the touch substrate 11 , so that the signal lines 3 It is easy to overlap and affect the signal transmission process.

In order to solve the above technical problems, embodiments of the present disclosure provide a touch substrate. As shown in FIG. 3 , the touch substrate may include a base substrate 1 , a plurality of touch electrodes 2 , an external circuit interface 4 and a plurality of signal lines 3 , wherein:

The base substrate 1 has a circular or elliptical first region 101 and a second region 102 surrounding the first region 101 . The boundary between the first area 101 and the second area 102 is divided into a plurality of boundary segments 1011 . The plurality of touch electrodes 2 are all disposed on the base substrate 1 and located in the first region 101 . Both ends of each touch electrode 2 extend to the boundary. The plurality of touch electrodes 2 include a plurality of first touch electrodes 201 and a plurality of second touch electrodes 202 . The plurality of first touch electrodes 201 all extend along the first direction. The plurality of second touch electrodes 202 all extend along a second direction crossing the first direction. The plurality of signal lines 3 are all disposed on the base substrate 1 and are located in the second region. One end of the plurality of signal lines 3 is configured to be connected to an external circuit interface 4 , and the other ends of the plurality of signal lines 3 are connected to the plurality of touch electrodes 2 in a one-to-one correspondence. Among the ends of the first touch electrodes 201 and the ends of the second touch electrodes 202 extending to the same boundary segment 1011 , only one end of the touch electrodes 2 is connected to the signal line 3 .

In the touch substrate of the embodiment of the present disclosure, a plurality of signal lines 3 are connected to a plurality of touch electrodes 2 in a one-to-one correspondence, and extend to the ends of the first touch electrodes 201 and the second touch electrodes 202 of the same boundary segment 1011 . Only one of the ends of the touch electrode 2 is connected to the signal line 3, which avoids that the end of the first touch electrode 201 and the end of the second touch electrode 202 extending to the same boundary segment 1011 are both connected with The connection of the signal lines 3 reduces the number of the signal lines 3 at the position of the boundary section 1011 , which can prevent the signal lines 3 from overlapping, and reduce the influence on the signal transmission process.

Each part of the touch substrate according to the embodiment of the present disclosure will be described in detail below:

As shown in FIG. 3 , the base substrate 1 is the support structure of the touch substrate. In an embodiment of the present disclosure, the touch substrate is applied to an external touch screen, and the base substrate 1 is a glass substrate or the like. In another embodiment of the present disclosure, the base substrate 1 may include a substrate, a light-emitting layer and an encapsulation layer. The light-emitting layer can be provided on the substrate. The encapsulation layer may be disposed on the side of the light-emitting layer away from the substrate. The above-mentioned plurality of touch electrodes 2 and the above-mentioned plurality of signal lines 3 are disposed on the side of the encapsulation layer away from the light-emitting layer. Compared with the plug-in touch screen, the touch electrodes 2 and the signal lines 3 are arranged on the packaging layer, which can reduce the thickness of the screen, and at the same time, there is no fit tolerance. Wherein, a driving circuit layer may also be provided between the light-emitting layer and the substrate to drive the light-emitting layer to emit light.

As shown in FIG. 5 , the base substrate 1 may include a first region 101 and a second region 102 surrounding the first region 101 . The first area 101 may be circular, so that the touch substrate is applied to a circular display, and of course, the first area 101 may also be elliptical. The first region 101 has a closed annular boundary. The aforementioned boundary can be divided into a plurality of boundary segments 1011 . The number of the boundary segments 1011 may be two, three, four or more. Taking the number of boundary segments 1011 as four as an example, the above-mentioned boundary is divided into a first boundary segment 1011a, a second boundary segment 1011b, a third boundary segment 1011c and a fourth boundary segment 1011d. The first boundary segment 1011a is connected to the second boundary segment 1011b, the second boundary segment 1011b is connected to the third boundary segment 1011c, the third boundary segment 1011c is connected to the fourth boundary segment 1011d, and the fourth boundary segment 1011d Connected to the first boundary segment 1011a. Wherein, the lengths of the four boundary segments 1011 may be the same. Taking the first region 101 as a circle as an example, the four boundary segments 1011 are all quarter arcs.

As shown in FIG. 5 , in the embodiment of the present disclosure, the connection point of the first boundary segment 1011 a and the second boundary segment 1011 b is used as the first connection point, and the connection point of the second boundary segment 1011 b and the third boundary segment 1011 c is used as the second connection point. The connection point of the third boundary segment 1011c and the fourth boundary segment 1011d is regarded as the third connection point, and the connection point of the first boundary segment 1011a and the fourth boundary segment 1011d is regarded as the fourth connection point. Wherein, when the above-mentioned four boundary segments 1011 are all quarter arcs, the connection line between the first connection point and the third connection point passes through the center of the circular first region 101, and the second connection point and The connection line of the fourth connection point also passes through the center of the circular first region 101 , and the connection line between the first connection point and the third connection point is perpendicular to the connection line between the second connection point and the fourth connection point.

As shown in FIG. 5 , a plurality of touch electrodes 2 may be disposed on the base substrate 1 . The plurality of touch electrodes 2 may include a plurality of first touch electrodes 201 and a plurality of second touch electrodes 202 . The plurality of first touch electrodes 201 all extend along the first direction. The first direction is the X direction in FIG. 5 . The plurality of second touch electrodes 202 all extend along a second direction crossing the first direction, that is, the first touch electrodes 201 and the second touch electrodes 202 are arranged to cross each other. The second direction is the Y direction in FIG. 5 . The position where the first touch electrode 201 and the second touch electrode 202 intersect may form a capacitance. By detecting the change in this capacitance, the location of the touch point can be determined. Further, the first direction may be perpendicular to the second direction, that is, the first touch electrodes 201 are perpendicular to the second touch electrodes 202 . In an embodiment of the present disclosure, the first touch electrodes 201 are touch sensing electrodes, and the second touch electrodes 202 are touch driving electrodes. In another embodiment of the present disclosure, the first touch electrodes 201 are touch driving electrodes, and the second touch electrodes 202 are touch sensing electrodes. In addition, along the above-mentioned first direction, each of the first touch electrodes 201 may include a plurality of first touch electrode blocks connected in sequence. Along the above-mentioned second direction, each second touch electrode 202 may include a plurality of second touch electrode blocks connected in sequence.

As shown in FIG. 5 , the plurality of touch electrodes 2 are located in the first region 101 of the base substrate 1 , and both ends of each touch electrode 2 extend to the above-mentioned boundary, that is, each touch electrode Both ends of 2 are in contact with the line on which the boundary is located. In addition, the two ends of each touch electrode 2 do not extend to the same boundary segment 1011 . Specifically, taking as an example the connecting line between the first connection point and the third connecting point is parallel to the first direction and the connecting line between the second connecting point and the fourth connecting point is parallel to the second direction, part of the One end of the two touch electrodes 202 extends to the first boundary segment 1011a, and the other end extends to the second boundary segment 1011b, that is, part of the second touch electrodes 202 is connected between the first boundary segment 1011a and the second boundary segment 1011b; the rest One end of the second touch electrodes 202 extends to the third boundary segment 1011c, and the other end extends to the fourth boundary segment 1011d; one end of some of the first touch electrodes 201 extends to the first boundary segment 1011a, and the other end extends to the fourth boundary Segment 1011d; one end of the remaining first touch electrodes 201 extends to the second boundary segment 1011b, and the other end extends to the third boundary segment 1011c.

In FIG. 4 , for the sake of clarity, only one first touch electrode 201 and one second touch electrode 202 are shown in the first region 101 , and each touch electrode 2 is no longer shown in FIG. 3 . As shown in FIG. 3 and FIG. 4 , the external circuit interface 4 is provided on the base substrate 1 and is located in the second area 102 . Taking the first touch electrodes 201 as touch sensing electrodes and the second touch electrodes 202 as touch driving electrodes as an example, the external circuit interface 4 is used for sending driving signals to the touch driving electrodes, and receiving touch sensing electrodes to generate induction signal. The external circuit interface 4 may be located on a side of the second boundary section 1011b away from the first boundary section 1011a.

As shown in FIG. 3 , the signal line 3 is used to connect the external circuit interface 4 and the touch electrode 2 . The number of the signal lines 3 is multiple, and one end of the multiple signal lines 3 is configured to be connected to an external circuit interface 4 , and the other ends of the multiple signal lines 3 are connected to the multiple touch electrodes 2 in one-to-one correspondence. Among them, one touch electrode 2 is only connected to one signal line 3 . Further, among the ends of the first touch electrodes 201 and the ends of the second touch electrodes 202 extending to the same boundary segment 1011 , only the ends of the touch electrodes 2 are connected to the signal lines 3 . Specifically, the ends of the first touch electrodes 201 extending to the first boundary segment 1011a and the ends of the first touch electrodes 201 extending to the third boundary segment 1011c are both connected to the signal lines 3 and extend to The ends of the second touch electrodes 202 of the first boundary segment 1011a and the ends of the second touch electrodes 202 extending to the third boundary segment 1011c are not connected to the signal line 3; The ends of the second touch electrodes 202 and the ends of the second touch electrodes 202 extending to the fourth boundary segment 1011d are both connected to the signal lines 3 and extending to the ends of the first touch electrodes 201 of the second boundary segment 1011b Neither the part nor the end of the first touch electrode 201 extending to the fourth boundary segment 1011d is connected to the signal line 3 .

As shown in FIGS. 3 and 4 , the above-mentioned plurality of signal lines 3 may include a first line group 301 , a second line group 302 , a third line group 303 and a fourth line group 304 . The first wiring group 301 may include a plurality of signal lines 3, and the plurality of signal lines 3 in the first wiring group 301 are one-to-one with the ends of the first touch electrodes 201 extending to the first boundary section 1011a. corresponding connection. The second wire group 302 can be arranged in parallel with the first wire group 301 and includes a plurality of signal wires 3 , the plurality of signal wires 3 in the second wire group 302 and the first wire extending to the second boundary section 1011b The ends of the two touch electrodes 202 are connected in a one-to-one correspondence. The third wiring group 303 includes a plurality of signal lines 3, and the plurality of signal lines 3 in the third wiring group 303 are connected to the ends of the first touch electrodes 201 extending to the third boundary segment 1011c in a one-to-one correspondence . The fourth wire group 304 and the third wire group 303 are arranged in parallel, and include a plurality of signal wires 3 , the plurality of signal wires 3 in the fourth wire group 304 and the second wire extending to the fourth boundary section 1011d The ends of the touch electrodes 202 are connected in a one-to-one correspondence. By dividing the plurality of signal lines 3 into a first line group 301, a second line group 302, a third line group 303 and a fourth line group 304, the first line group 301 and the second line group 304 are divided into The groups 302 are arranged in parallel, so that the third wiring group 303 and the fourth wiring group 304 are arranged in parallel, which can further prevent the signal lines 3 from overlapping. In addition, the plurality of signal lines 3 may include a plurality of first signal lines 3011 and a plurality of second signal lines 3021 . The signal line 3 in the first wiring group 301 and the signal line 3 in the third wiring group 303 are the first signal line 3011 , the signal line 3 in the second wiring group 302 and the fourth wiring group The signal lines 3 in 304 are all second signal lines 3021 .

FIG. 6 shows a schematic cross-sectional view of the first wire group 301 and the second wire group 302 . FIG. 7 shows a schematic cross-sectional view of the third wire group 303 and the fourth wire group 304 . In FIGS. 6 and 7 , only one signal line 3 is shown for each wiring group. As shown in FIG. 4 , FIG. 6 and FIG. 7 , the length of the first signal line 3011 in the first wiring group 301 is greater than the length of the first signal line 3011 in the third wiring group 303 . The cross-sectional area of the first signal line 3011 in 301 is larger than the cross-sectional area of the first signal line 3011 in the third wiring group 303, so that the resistance of the first signal line 3011 in the first wiring group 301 is the same as that of the third wiring The resistances of the first signal lines 3011 in the group 303 tend to be the same. The length of the second signal wire 3021 in the second wire group 302 is greater than the length of the second signal wire 3021 in the fourth wire group 304, and the cross-sectional area of the second signal wire 3021 in the second wire group 302 is greater than The cross-sectional area of the second signal line 3021 in the fourth trace group 304, so that the resistance of the second signal line 3021 in the second trace group 302 and the resistance of the second signal line 3021 in the fourth trace group 304 tend to be same. The pattern of the signal line 3 in the first wiring group 301 may be symmetrical with the pattern of the signal line 3 in the fourth wiring group 304, and the pattern of the signal line 3 in the second wiring group 302 may be the same as that of the third wiring group 302. The patterns of the signal lines 3 in the wiring group 303 are arranged symmetrically. A plurality of signal lines 3 in any wiring group are arranged in parallel.

As shown in FIGS. 4 , 6 and 7 , the touch substrate of the embodiment of the present disclosure may further include a first shielded wire 5 and a second shielded wire 10 . The first shielded wire 5 may be disposed on the base substrate 1 and located between the first wire group 301 and the second wire group 302 . The second shielded wire 10 may be disposed on the base substrate 1 and located between the third wire group 303 and the fourth wire group 304 . The first shield wire 5 is connected to a constant power signal terminal to shield the noise signal between the first wire group 301 and the second wire group 302 . The second shield wire 10 is connected to a constant power signal terminal to shield the noise signal between the third wire group 303 and the fourth wire group 304 . Wherein, the first shielded wire 5 and the second shielded wire 10 may be arranged on the side of the above-mentioned encapsulation layer 6 away from the light-emitting layer. The constant power signal terminal may be grounded.

In addition, as shown in FIG. 6 and FIG. 7 , the base substrate 1 of the embodiment of the present disclosure may further include a buffer layer 7 provided on the side of the encapsulation layer 6 away from the light-emitting layer. The first signal wire 3011 , the second signal wire 3021 , the first shield wire 5 and the second shield wire 10 are all disposed on the side of the buffer layer 7 away from the packaging layer 6 . The touch substrate may further include an interlayer insulating layer 8 and a protective layer 9 . The second signal lines 3021 in the second wiring group 302 and the first signal lines 3011 in the third wiring group 303 are both covered between the interlayer insulating layer 8 and the buffer layer 7 . The first signal wire 3011 , the first shield wire 5 , the second shield wire 10 in the first wire group 301 , and the second signal wire 3021 in the fourth wire group 304 pass through the interlayer insulating layer 8 The holes cover the buffer layer 7 . The protective layer 9 is disposed on the side of the interlayer junction layer away from the buffer layer 7 , and covers the first signal line 3011 , the first shielded wire 5 , the second shielded wire 10 and the fourth trace in the first trace group 301 The second signal line 3021 in the line group 304 .

Embodiments of the present disclosure also provide a display device. The display device may include the touch substrate described in any one of the above embodiments. The display device may be a wearable display device, such as a watch, glasses, etc., but the embodiments of the present disclosure do not specifically limit this. Since the touch substrate in the display device of the embodiment of the present disclosure is the same as the touch substrate in the above-mentioned embodiments of the touch substrate, it has the same beneficial effects, and details are not repeated here.

The above description is only the preferred embodiment of the present disclosure, and does not limit the present disclosure in any form. Although the present disclosure has been disclosed as above in preferred embodiments, it is not intended to limit the present disclosure. Personnel, without departing from the scope of the technical solutions of the present disclosure, can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above, but any content that does not depart from the technical solutions of the present disclosure, according to the present disclosure Any simple modifications, equivalent changes and modifications made to the above embodiments by the disclosed technical essence still fall within the scope of the technical solutions of the present disclosure.

Claims (10)

1. A touch substrate, comprising:

the touch control device comprises a substrate and a touch control substrate, wherein the substrate is provided with a first area which is circular or elliptical and a second area which surrounds the first area, the boundary between the first area and the second area is divided into a plurality of boundary sections, and the first area corresponds to a touch control area of the touch control substrate;

the touch control electrodes are arranged on the substrate base plate and located in the first area, and two ends of each touch control electrode extend to the boundary; the plurality of touch control electrodes comprise a plurality of first touch control electrodes and a plurality of second touch control electrodes, the plurality of first touch control electrodes extend along a first direction, and the plurality of second touch control electrodes extend along a second direction which is crossed with the first direction;

the plurality of signal lines are arranged on the substrate and located in the second area, one ends of the plurality of signal lines are all configured to be connected with an external circuit interface, the other ends of the plurality of signal lines are connected with the plurality of touch electrodes in a one-to-one correspondence mode, and the end portion of only one touch electrode in the end portions of the first touch electrode and the second touch electrode extending to the same boundary section is connected with the signal line.

2. The touch substrate of claim 1, wherein the boundary is divided into a first boundary segment, a second boundary segment, a third boundary segment and a fourth boundary segment;

the first direction is perpendicular to the second direction, one end of a part of the second touch electrode extends to the first boundary segment, and the other end of the second touch electrode extends to the second boundary segment; one end of the rest of the second touch electrodes extends to the third boundary segment, and the other end of the rest of the second touch electrodes extends to the fourth boundary segment; one end of part of the first touch electrode extends to the first boundary segment, and the other end of the part of the first touch electrode extends to the fourth boundary segment; one end of the rest of the first touch electrode extends to the second boundary segment, and the other end of the rest of the first touch electrode extends to the third boundary segment;

the end part of the first touch electrode extending to the first boundary segment and the end part of the first touch electrode extending to the third boundary segment are both connected with the signal line; the end portion of the second touch electrode extending to the second boundary segment and the end portion of the second touch electrode extending to the fourth boundary segment are connected to the signal line.

3. The touch substrate of claim 2, wherein the external circuit interface is disposed in the second area, and is located on the same side of the substrate as the signal line and on a side of the second boundary segment away from the first boundary segment;

the plurality of signal lines include:

the first wiring group comprises a plurality of signal lines, and the signal lines in the first wiring group are connected with the end parts of the first touch electrodes extending to the first boundary section in a one-to-one correspondence manner;

the second routing group is arranged in parallel with the first routing group and comprises a plurality of signal lines, and the signal lines in the second routing group are connected with the end parts of the second touch electrodes extending to the second boundary section in a one-to-one correspondence mode;

a third routing group, including a plurality of signal lines, where the plurality of signal lines in the third routing group are connected to the end portions of the first touch electrodes extending to the third boundary segment in a one-to-one correspondence manner;

and the fourth wiring group is arranged in parallel with the third wiring group and comprises a plurality of signal lines, and the plurality of signal lines in the fourth wiring group are correspondingly connected with the end parts of the second touch electrodes extending to the fourth boundary section one by one.

4. The touch substrate according to claim 3, wherein the signal lines in the first wire group have a length greater than that of the signal lines in the third wire group, and a cross-sectional area of the signal lines in the first wire group is greater than that of the signal lines in the third wire group; the length of the signal line in the second wire group is greater than that of the signal line in the fourth wire group, and the sectional area of the signal line in the second wire group is greater than that of the signal line in the fourth wire group.

5. The touch substrate of claim 3, wherein the pattern of the signal lines in the first wire group is symmetrical to the pattern of the signal lines in the fourth wire group, and the pattern of the signal lines in the second wire group is symmetrical to the pattern of the signal lines in the third wire group.

6. The touch substrate of claim 3, wherein the signal lines in any of the routing groups are arranged in parallel.

7. The touch substrate of claim 3, further comprising:

the first shielding wire is arranged on the substrate base plate and is positioned between the first routing group and the second routing group;

the second shielding wire is arranged on the substrate base plate and is positioned between the third wiring group and the fourth wiring group;

the first shielding wire and the second shielding wire are both connected with a constant power supply signal end.

8. The touch substrate of claim 1, wherein the first touch electrodes are touch sensing electrodes, the second touch electrodes are touch driving electrodes, the plurality of signal lines comprise a plurality of first signal lines and a plurality of second signal lines, the plurality of first signal lines are connected to the plurality of touch sensing electrodes in a one-to-one correspondence, and the plurality of second signal lines are connected to the plurality of touch driving electrodes in a one-to-one correspondence.

9. The touch substrate of claim 1, wherein the base substrate comprises:

a substrate;

a light emitting layer disposed on the substrate;

the packaging layer is arranged on one side of the light-emitting layer, which is far away from the substrate;

the touch electrodes and the signal lines are arranged on one side, far away from the light emitting layer, of the packaging layer.

10. A display device comprising the touch substrate according to any one of claims 1 to 9.

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