TWI611329B - Electronic device and monolayer mutual-capacitance touch screen thereof - Google Patents

Abstract

The single-layer mutual capacitive touch screen includes a plurality of sensing electrode groups, a plurality of bonding pads, a plurality of first leads, and a plurality of second leads. The sensing electrode group is disposed in parallel along the first direction, the sensing electrode group includes a first unit extending in the second direction and a second unit surrounding the first unit; the first unit includes a plurality of first electrodes; and the second unit includes a plurality of electrodes Pair; the electrode pair includes a second electrode disposed on a first side of the first unit and a third electrode disposed on a second side of the first unit; the first lead is for connecting the first electrode to the corresponding bonding pad; The lead wire is used to connect the electrode pair with the corresponding bonding pad; the adjacent two electrode pairs, the adjacent ends of the two second electrodes are opposite to the first electrode in the first direction, and the adjacent ends of the two third electrodes Opposite the first electrode in the first direction.

Description

Electronic device and its single-layer mutual capacitive touch screen

The present invention relates to the field of touch technologies, and more particularly to an electronic device and a single-layer mutual capacitive touch screen thereof.

At present, capacitive touch screens, as an important component of human-computer interaction, have been widely used in electronic products such as mobile phones and tablet computers. Among them, the single-layer mutual-capacitive touch screen is a widely used touch screen, and the touch sensing electrode, the touch driving electrode and the electrode trace are prepared through the same transparent electrode, and the cross-bridge is not required. Simple, low cost and high cost performance. Therefore, the single-layer mutual-capacitive touch screen has received widespread attention and has become an important development direction of the capacitive touch screen.

An electrode pattern of a conventional single-layer mutual-capacitive touch screen, as shown in FIG. 1 , includes four first electrodes X1 to X4 arranged in parallel in the X direction, and each of the first electrodes and 15 are sequentially arranged in the Y direction. The arranged second electrodes Y1 to Y15 are coupled to form a plurality of sensing nodes 12. Each of the first electrodes is correspondingly connected to the corresponding bonding pad 13 through the corresponding first lead 14 , and each of the second electrodes is correspondingly connected to the corresponding bonding pad 13 through the corresponding second lead 15 . The bonding pad 13 is connected to an FPC (flexible circuit board, not shown). The FPC is connected to a touch chip (not shown) to test the touch position information of the sensing node 12 through the touch wafer to determine the user's touch position information. The binding pad 13 is disposed within the binding area 11. The first lead 14 and the second lead 15 are traces of a single-layer mutual capacitive touch screen.

Corresponding to the set size of the single-layer mutual-capacitive touch screen, the electrode pattern of the structure shown in FIG. 1 causes the width of the blind area L0 of the single-layer mutual-capacitive touch screen to be large, thereby making the touch precision poor; The electrode pattern of the structure shown in FIG. 1 leads to a large number of bonding pads and traces of the single-layer mutual-capacitive touch screen, resulting in a large manufacturing cost.

In order to solve the above technical problems, and to achieve the above object, the present invention provides the following technical solutions:

A single-layer mutual capacitive touch screen includes a plurality of sensing electrode sets, a plurality of bonding pads, a plurality of first leads, and a plurality of second leads.

The plurality of sensing electrode groups are disposed in parallel along the first direction, and each of the sensing electrode groups includes a first unit extending in the second direction and a second unit surrounding the first unit, the first direction being perpendicular to the second direction.

The first unit includes m first electrodes arranged in the second direction, m is a positive integer greater than 1; the second unit includes i pairs of electrodes arranged in the second direction, i is a positive integer greater than 1; a second electrode disposed on a first side of the first unit and a third electrode disposed on a second side of the first unit; a direction in which the first side is directed to the second side is a first direction; and a second electrode is electrically connected to the third electrode .

The first lead is in one-to-one correspondence with the first electrode for connecting the first electrode to the corresponding bonding pad; the second lead is in one-to-one correspondence with the electrode pair for connecting the electrode pair with the corresponding bonding pad. Wherein any two adjacent pairs of electrodes, the gap between the adjacent two second electrodes is opposite to the first electrode in the first direction, and the gap between the adjacent two third electrodes is opposite to the first electrode One Relative in direction.

Preferably, in the single-layer mutual capacitive touch screen, the single-layer mutual capacitive touch screen comprises a first end and a second end. The direction of the first end pointing to the second end is a second direction; the plurality of bonding pads are disposed at the first end and arranged in the first direction.

Preferably, in the single-layer mutual capacitive touch screen, in the same sensing electrode group, the first lead is located on one side of the sensing electrode group; and the second lead is located on the other side of the sensing electrode group.

Preferably, in the single-layer mutual-capacitive touch screen, the shape of the adjacent two sensing electrode groups is a mirror symmetrical pattern; or the shape of the adjacent two sensing electrode groups is the same.

Preferably, in the single-layer mutual capacitive touch screen, the portion of the first first electrode is disposed opposite to the entire first second electrode in the second direction, and the first first third electrode is in the first The first first electrode and the first second electrode are disposed opposite each other in the second direction, and the first third electrode is disposed opposite to the first third electrode.

Preferably, in the single-layer mutual capacitive touch screen, the portion of the mth first electrode is opposite to the entire i-th second electrode in the second direction, and the entire i-th third electrode is in the first Or oppositely disposed in the direction; or, the entire mth first electrode and the i-th second electrode are oppositely disposed in the second direction, and the portion of the i-th third electrode is disposed opposite to the second direction.

Preferably, in the single-layer mutual capacitive touch screen, the first electrode is a rectangular electrode.

Preferably, in the single-layer mutual capacitive touch screen, in the same first unit, two adjacent first electrodes are partially disposed opposite to each other in the first direction.

Preferably, in the single-layer mutual capacitive touch screen, the first electrode includes the first The first surface electrode extends in a second direction and the second surface electrode extends in a second direction. The first surface electrode is connected to the second surface electrode, and the width of the second surface electrode in the first direction is smaller than the width of the first surface electrode; the adjacent two first electrodes are partially transmitted through the second surface electrode in the first direction. Relative settings.

Preferably, in the single-layer mutual capacitive touch screen, the first surface electrode and the second surface electrode are both rectangular.

The present invention also provides an electronic device comprising the single-layer mutual capacitive touch screen of any of the above.

The invention also provides a signal control device, comprising a signal sending module, a signal receiving module and a signal processing module, wherein the signal sending module is connected to the first unit, the signal receiving module is connected to the second unit, and the signal processing module is respectively connected to the signal Send module and signal receiving module.

As can be seen from the above technical solution, the single-layer mutual capacitive touch screen provided by the present invention includes a plurality of sensing electrode groups, a plurality of bonding pads, a plurality of first leads, and a plurality of second leads. The sensing electrode group is disposed in parallel along the first direction, the sensing electrode group includes a first unit extending in the second direction and a second unit surrounding the first unit; the first direction is perpendicular to the second direction; and the first unit includes m along a first electrode arranged in two directions, m is a positive integer greater than 1; the second unit includes i pairs of electrodes arranged in a second direction, i is a positive integer greater than 1; and the electrode pair is disposed first in the first unit a second electrode on the side and a third electrode disposed on the second side of the first unit; a direction in which the first side is directed to the second side is a first direction; a second electrode is electrically connected to the third electrode; the first lead and the first electrode One-to-one correspondence for connecting the first electrode to the corresponding bonding pad; the second lead is in one-to-one correspondence with the electrode pair for connecting the electrode pair with the corresponding bonding pad; wherein, the adjacent two electrode pairs The one end adjacent to the two second electrodes is in the first direction with the first electrode Pairs, one end adjacent to the two third electrodes is opposite to the first electrode in the first direction.

It can be seen that, in the single-layer mutual-capacitive touch screen, the adjacent ones of the two electrode pairs are disposed opposite to the first electrode in the first direction, and the two third electrodes are adjacent to each other. One end of the first electrode is opposite to the first electrode in the first direction, and the number of sensing nodes can be increased. Compared with the prior art, the number of leads can be reduced without reducing the number of sensing nodes. By reducing the number of leads, the blind zone width can be reduced, the touch accuracy can be improved, and the number of bonding pads can be reduced, and the cost can be reduced.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only Embodiments of the invention, for those of ordinary skill in the art, may obtain other figures from the drawings provided without the inventive effort.

11‧‧‧Bound area

12‧‧‧Feeling node

13‧‧‧ binding pad

14‧‧‧First lead

15‧‧‧second lead

20‧‧‧Induction electrode set

21‧‧‧ binding pad

22‧‧‧First lead

23‧‧‧second lead

24‧‧‧First electrode

25‧‧‧electrode pair

251‧‧‧second electrode

252‧‧‧ third electrode

26‧‧‧Feeling node

261‧‧‧ ellipse

262‧‧‧ ellipse

30‧‧‧Induction electrode set

40‧‧‧Induction electrode set

51‧‧‧First electrode

511‧‧‧First surface electrode

512‧‧‧second surface electrode

52‧‧‧second electrode

53‧‧‧ third electrode

60‧‧‧Induction electrode set

61‧‧‧First electrode

62‧‧‧second electrode

63‧‧‧ third electrode

70‧‧‧Induction electrode set

71‧‧‧First electrode

72‧‧‧second electrode

73‧‧‧ third electrode

80‧‧‧Induction electrode set

81‧‧‧First electrode

82‧‧‧second electrode

83‧‧‧ third electrode

91‧‧‧Electronic equipment

92‧‧‧Single layer mutual capacitive touch screen

L0‧‧‧Blind area

L1‧‧‧ binding zone

X‧‧‧ first direction

Y‧‧‧second direction

FIG. 1 is a schematic structural diagram of a single-layer mutual-capacitive touch screen commonly seen in the prior art.

FIG. 2 is a schematic structural diagram of a single-layer mutual-capacitive touch screen provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of another single-layer mutual-capacitive touch screen provided by the implementation of the present invention.

FIG. 4 is a schematic structural diagram of still another single-layer mutual-capacitive touch screen provided by the implementation of the present invention.

FIG. 5 is a schematic structural diagram of a sensing electrode group according to an embodiment of the invention.

FIG. 5b is a schematic structural diagram of another sensing electrode group according to an embodiment of the present invention.

FIG. 5c is a schematic structural diagram of another sensing electrode group according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of still another single-layer mutual-capacitive touch screen provided by an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of still another single-layer mutual-capacitive touch screen provided by an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of still another single-layer mutual-capacitive touch screen provided by an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a single-layer mutual-capacitive touch screen according to an embodiment of the present invention. The single-layer mutual-capacitive touch screen includes a plurality of sensing electrode groups 20 and a plurality of binding pads 21 and more. The strip has a first lead 22 and a plurality of second leads 23.

The plurality of sensing electrode groups 20 are disposed in parallel along the first direction X. Each of the sensing electrode groups 20 includes a first unit extending along the second direction Y and a second unit surrounding the first unit; the first direction X is perpendicular to the second direction Y .

The first unit includes m first electrodes 24 arranged in the second direction Y, m being a positive integer greater than one.

The second unit includes i pairs of electrodes 25 arranged in the second direction Y, i being a positive integer greater than one. The electrode pair 25 includes a second electrode 251 disposed on a first side of the first unit and a third electrode 252 disposed on a second side of the first unit. The direction in which the first side points to the second side is the first direction X; in the same electrode pair 25, the second electrode 251 is electrically connected to the third electrode 252.

The first lead 22 is in one-to-one correspondence with the first electrode 24 for connecting the first electrode 24 with the corresponding bonding pad 21.

The second lead 23 is in one-to-one correspondence with the electrode pair 25 for connecting the electrode pair 25 with the corresponding bonding pad 21.

In the same sensing electrode group 20, the adjacent two first electrodes 24 are insulated, the adjacent two second electrodes 251 are insulated, and the adjacent two third electrodes 252 are insulated. The embodiment of the present invention is a single-layer mutual-capacitive touch screen, that is, the first electrode 24, the second electrode 251, and the third electrode 252 are prepared through the same transparent conductive layer, and are in the same plane. Therefore, there is a gap between the adjacent two first electrodes 24, a gap between the adjacent two second electrodes 251, and a gap between the adjacent two third electrodes 252.

Wherein, in any two pairs of electrodes adjacent in the second direction Y, the gap between the adjacent two second electrodes 251 is opposite to a first electrode 24 in the first direction X, and the adjacent two are third The gap between the electrodes 252 is opposite to the first electrode 24 in the first direction X.

In the embodiment of the present invention, one first electrode 24 is disposed opposite to two adjacent electrode pairs 25 in the first direction X, so that the number of sensing nodes 26 can be increased. Compared with the prior art, the number of leads can be reduced without reducing the number of sensing nodes by 26. By reducing the number of leads, the width of the blind zone L0 can be reduced, the touch accuracy can be improved, and the number of bonding pads can be reduced by 21 cost. At the same time, the reduction of the number of binding pads 21 can shorten the length of the binding area L1, thereby reducing the length of use of the FPC and further reducing the cost.

Optionally, the single-layer mutual capacitive touch screen comprises a first end and a second end, and the direction of the first end pointing to the second end is the second direction Y. A plurality of bonding pads 21 are disposed at the first end and arranged in the first direction. In the same sensing electrode group 20, the first lead 22 is located on one side of the sensing electrode group 20, and the second lead 23 is located on the other side of the sensing electrode group.

All the bonding pads 21 are disposed at the same end, and the first lead 22 in the same sensing electrode group 20 is located on the same side of the sensing electrode group 20, and the second lead 23 is located on the same side of the sensing electrode group, facilitating the first lead 22 And the layout of the second lead 23, the manufacturing process is simple.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of another single-layer mutual-capacitive touch screen according to an embodiment of the present invention. In an embodiment, two adjacent sensing electrode groups 30 have a mirror-symmetric shape. In this embodiment, the electrode structure has better symmetry and can improve the linearity of the touch.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of another single-layer mutual-capacitive touch screen according to an embodiment of the present invention. In this embodiment, two adjacent sensing electrode groups 40 have the same shape and structure. In this embodiment, the electrode patterns of the respective sensing electrode groups 40 are the same, and the manufacturing process is simple.

In the same sensing electrode group, m first electrodes are defined as a first first electrode to a mth first electrode in the second direction Y. The i electrode pairs are defined as a first electrode pair to an ith electrode pair in the second direction Y. The i second electrodes are defined as the first second electrode to the ith second electrode in the second direction Y. The i third electrodes are defined as the first third electrode to the ith third electrode in the second direction Y. In the embodiment shown in Figures 2 to 4, the first first The portion of the electrode is disposed opposite to the entire first second electrode in the second direction, and is disposed opposite to the entire first third electrode in the first direction, that is, vertical on the same line parallel to the second direction Y Projecting, the first first electrode overlaps the first second electrode portion and overlaps the first third electrode portion; the entire mth first electrode and the i-th second electrode portion are in the second direction The upper portion is oppositely disposed, and the portion of the ith third electrode is oppositely disposed in the second direction, that is, the vertical projection is performed on the same line parallel to the second direction Y, and the mth first electrode projection completely falls on the i-th Within the projection of the third electrode, and completely within the projection of the i-th second electrode, at this time, i = m, as shown in Figures 2 to 4.

It is also possible to arrange that the portion of the first first electrode is disposed opposite to the entire first second electrode in the second direction, and is disposed opposite to the entire first third electrode in the first direction; the mth first electrode The portion is disposed opposite to the entire ith second electrode in the second direction, and is disposed opposite to the entire ith third electrode in the first direction. At this time, i=m+1, as shown in Fig. 5a. The overall and partial relative settings can be analogized to the above description.

It is also possible to dispose the entire first first electrode and the first second electrode in a second direction, and the first third electrode in a second direction; the entire mth first The electrode and the portion of the i-th second electrode are disposed opposite to each other in the second direction, and the portion of the i-th third electrode is disposed opposite to the second direction. i = m-1, as shown in Figure 5b. The overall and partial relative settings can be analogized to the above description.

It is also possible to dispose the entire first first electrode and the first second electrode in a second direction, and the first third electrode in a second direction; the mth first electrode The portion is opposite to the entire i-th second electrode in the second direction, and The ith third electrodes are oppositely disposed in the first direction. At this time, i=m, as shown in FIGS. 2 to 4. The overall and partial relative settings can be analogized to the above description.

In the embodiment shown in FIG. 2 to FIG. 4, in the same first unit, two adjacent first electrodes are partially disposed in the first direction, which can further increase the number of sensing nodes to reduce the number of electrodes. Reduce the number of leads and bond pads, thereby reducing blind spots and reducing costs.

Taking FIG. 2 as an example, two adjacent first electrodes 24 have opposite portions in the first direction X, the width of the opposite portion is smaller than the width of the first electrode, and the opposite portions may each add 0.5 sensing nodes (such as an ellipse 262). As shown, there is one sensing node (shown by ellipse 261) for the entire electrode width.

When the adjacent two first electrodes are partially disposed opposite each other in the first direction, the structure of the first electrode may be as shown in FIGS. 5a to 5c.

Taking FIG. 5c as an example, the first electrode 51 in the sensing electrode group includes at least a first surface electrode 511 extending in the second direction Y and a second surface electrode 512 extending in the second direction Y. The first surface electrode 511 is connected to the second surface electrode 512, and the width of the second surface electrode 512 in the first direction X is smaller than the width of the first surface electrode 511. The adjacent two first electrodes 51 are partially disposed opposite to each other in the first direction X through the second surface electrode 512.

The first surface electrode and the second surface electrode are both rectangular, and the pattern structure is simple, which is easier from pattern design and process process, greatly improves the etching yield of the screen factory, and at the same time, the pattern coupling mode is simple, and the pattern optical effect is more uniform. The appearance of the screen is better. The second surface electrode from which the end of the first surface electrode 511 extends is not limited to a rectangle, and may also be a triangle.

If a first electrode 51 has only one adjacent first electrode 51 in the second direction, the first electrode is provided with the second surface electrode 512 only at one end. If one first electrode 51 has two adjacent first electrodes 51 in the second direction, a second surface electrode 512 is disposed at both ends of the first electrode 51. In the embodiment shown in FIG. 5c, the first electrode 51, the second electrode 52, and the third electrode 53 are both rectangular structures, and the preparation process is simple. The second surface electrode 512 is extended from one end of the first surface electrode 511, and the two are integrated.

It is also possible to dispose that the two first electrodes adjacent in the second direction Y have no opposite portions in the first direction X. At this time, the first electrode is a surface electrode, and at this time, the single-layer mutual capacitive touch screen The structure can be as shown in Figures 6-8.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of another single-layer mutual-capacitive touch screen according to an embodiment of the present invention. At this time, the first electrode 61 is a surface electrode. The second electrode 62 and the third electrode 63 are surface electrodes. In the same electrode pair, the second electrode 62 and the third electrode 63 have the same structure and are symmetrically disposed. The structure of each of the sensing electrode groups 60 is the same.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of another single-layer mutual-capacitive touch screen according to an embodiment of the present invention. At this time, the first electrode 71 is a surface electrode. The second electrode 72 and the third electrode 73 are surface electrodes. In the same electrode pair, the second electrode 72 and the third electrode 73 are identical in structure, and are disposed oppositely in the first direction X. The adjacent two sensing electrode groups 70 are mirror symmetrical structures.

Referring to FIG. 8, FIG. 8 is a schematic structural diagram of another single-layer mutual-capacitive touch screen according to an embodiment of the present invention. At this time, the first electrode 81 is a surface electrode. The second electrode 82 and the third electrode 83 are surface electrodes. In the same electrode pair, the second electrode 82 and the third electrode 83 have the same structure, and are disposed oppositely in the first direction X. The structures of the adjacent two sensing electrode groups 80 are the same.

In the single-layer mutual-capacitive touch screen of the embodiment of the present invention, the first lead corresponding to the first electrode may be drawn from the gap between two adjacent second electrodes, or from the adjacent two third electrodes. The gap is drawn. The lead of the first electrode may also be slitted on the opposite second or third electrode. The first lead corresponding to the first first electrode may be led to the first end, and the first lead of the mth first electrode may be led to the second end.

In the following, the embodiment shown in FIG. 1 and the embodiment shown in FIG. 2 are taken as an example to compare and explain the advantages of the embodiment of the present invention:

In the embodiment shown in FIG. 1, each of the sensing electrodes includes fifteen second electrodes and one first electrode. The first electrode length is set to fifteen pitches. There are fifteen sensing nodes 12 in one sensing electrode set, requiring sixteen leads and sixteen bonding pads.

In the embodiment shown in Figure 2, the total length of the set panel is still fifteen pitches. In one sensing electrode group 20, there are six first electrodes 24 and six electrode pairs, and eighteen five sensing nodes 26, wherein two adjacent five first sensing electrodes 26 contribute two points to five sensing nodes 26, Twelve leads and twelve bond pads 21 are required.

Compared with the embodiment shown in FIG. 1 and FIG. 2 , the technical solution of the embodiment can increase the number of sensing nodes and reduce the number of leads and binding pads, thereby shortening the blind zone width, improving touch precision, and reducing cost.

The embodiment of the present invention further provides an electronic device. Referring to FIG. 9 , FIG. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. The electronic device 91 includes a single-layer mutual capacitive touch screen 92 . The single-layer mutual-capacitive touch screen 92 is the single-layer mutual-capacitive touch of the above embodiment. Screen.

The electronic device can be any electronic device with a touch screen. The electronic device has low manufacturing cost and high touch precision.

The signal sending module is configured to send a driving signal to the first unit. When the surface of the touch screen is touched, the touch body is coupled with the touch screen to generate a sensing signal, and the signal receiving module receives the sensing signal through the second unit. The position of the touch position is realized through the signal processing module.

The above description of the disclosed embodiments enables those of ordinary skill in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein.

20‧‧‧Induction electrode set

21‧‧‧ binding pad

22‧‧‧First lead

23‧‧‧second lead

24‧‧‧First electrode

25‧‧‧electrode pair

251‧‧‧second electrode

252‧‧‧ third electrode

26‧‧‧Feeling node

261‧‧‧ ellipse

262‧‧‧ ellipse

L0‧‧‧Blind area

L1‧‧‧ binding zone

X‧‧‧ first direction

Y‧‧‧second direction

Claims (11)

A single-layer mutual-capacitive touch screen includes a plurality of sensing electrode groups, a plurality of bonding pads, a plurality of first leads, and a plurality of second leads; the plurality of sensing electrode groups are arranged in parallel along a first direction, each The sensing electrode group includes a first unit extending along a second direction and a second unit surrounding the first unit, the first direction being perpendicular to the second direction; the first unit comprising m along the second a first electrode arranged in the direction, m is a positive integer greater than 1; the second unit includes i pairs of electrodes arranged in the second direction, i is a positive integer greater than 1, and the electrode pair is disposed a first electrode on a first side of the first unit and a third electrode disposed on a second side of the first unit, the direction of the first side pointing to the second side being the first direction, the second electrode The third lead is in electrical communication with the third electrode; the first lead is in one-to-one correspondence with the first electrode, and is configured to connect the first electrode to the corresponding bonding pad; and the second lead is in one-to-one correspondence with the pair of electrodes Used to connect the electrode pair to the corresponding binding pad; a pair of adjacent two electrode pairs, a gap between two adjacent second electrodes is opposite to the first electrode in the first direction, and a gap between adjacent two third electrodes is adjacent to the first electrode Opposite in the first direction. The single-layer mutual-capacitive touch screen of claim 1, wherein the single-layer mutual-capacitive touch screen comprises a first end and a second end, and the direction of the first end pointing to the second end is the second a direction; the plurality of binding pads are disposed at the first end and aligned along the first direction. The single-layer mutual capacitive touch screen of claim 2, wherein in the same sensing electrode group, the first lead is located on one side of the sensing electrode group, and the second lead is located on the other side of the sensing electrode group. The single-layer mutual-capacitive touch screen of claim 3, wherein two adjacent sensing electrode groups have a mirror-symmetric shape; or two adjacent sensing electrode groups have the same shape and structure. The single-layer mutual-capacitive touch screen of claim 1, wherein the portion of the first first electrode is disposed opposite to the entire first second electrode in the second direction, and the entire first third electrode is The first direction is oppositely disposed in the first direction; or the portion of the first first electrode and the first second electrode is oppositely disposed in the second direction, and the portion of the first third electrode is in the second direction Relative settings. The single-layer mutual capacitive touch screen of claim 1, wherein the portion of the mth first electrode is disposed opposite to the entire i-th second electrode in the second direction, and the entire i-th third electrode is The first direction is oppositely disposed; or, the portion of the entire mth first electrode and the ith second electrode are oppositely disposed in the second direction, and the portion of the ith third electrode is in the second direction Relative settings. The single-layer mutual capacitive touch screen of claim 1, wherein the first electrode is a rectangular electrode. The single-layer mutual-capacitive touch screen of claim 1, wherein two adjacent first electrodes are partially disposed opposite to each other in the first direction. The single-layer mutual-capacitive touch screen of claim 8, the first electrode includes a first surface electrode extending along the second direction, and a second surface electrode extending along the second direction; The first surface electrode is connected to the second surface electrode, and the width of the second surface electrode in the first direction is smaller than the width of the first surface electrode; and the two adjacent first electrodes are transmitted through the second surface The electrodes are partially disposed opposite each other in the first direction. The single-layer mutual capacitive touch screen of claim 9, wherein the first surface electrode and the second surface electrode are both rectangular. An electronic device comprising the single layer mutual capacitive touch screen of any one of claims 1 to 10.