TWM508064U - Single layer mutual capacitance touch screen, touch screen device and electronic device - Google Patents

Description

Single-layer mutual capacitance touch screen, touch screen device and electronic device

The present invention belongs to the field of electronic device technology, and more particularly to a single-layer mutual-capacitive touch screen, a touch screen device having the single-layer mutual-capacitive touch screen, and an electronic device.

With the continuous development of touch screens, capacitive touch screens are more and more widely used in terminal devices. In the conventional capacitive touch screen devices, they can be set on the touch screen body. Single-layer indium tin oxide (ITO) mutual capacitance to achieve multi-touch of touch screen devices. Referring to FIG. 1 , a setting pattern of a mutual capacitance sensing node on a single layer in a touch screen device is illustrated, wherein each column of mutual capacitance includes a first electrode (as shown in FIG. 1 , respectively, an electrode of X1 to Xm, wherein m is a natural number greater than 1) and a plurality of second electrodes (electrodes of Y1 to Ym as shown in FIG. 1), and a first electrode and a second electrode form a mutual capacitance, and each of the first electrodes A separate lead wire is separately connected to the second electrode. It can be seen that the number of lead wires on both sides of the first electrode and the second electrode is relatively unbalanced, which is disadvantageous for improving the performance of the touch screen device.

The purpose of the present invention is to provide a single-layer mutual-capacitive touch screen, which aims to solve the problem of unbalanced wiring on both sides of each column of mutual capacitance of the conventional touch screen.

An embodiment of the present invention provides a single-layer mutual-capacitive touch screen, the single-layer mutual-capacitive touch screen includes: a plurality of sensing electrode units arranged in parallel, each sensing electrode unit including a plurality of first electrodes and a plurality of a second electrode, the plurality of first electrodes and the plurality of second electrodes are coupled to form a plurality of mutual capacitance sensing nodes; a plurality of first lead wires, each of the first lead wires being connected to a single first electrode; a plurality of second lead wires, each of the second lead wires is connected to a single second electrode; wherein the first lead wires and the second lead wires connected to the same sensing electrode unit are respectively located at opposite sides of the same sensing electrode unit The first electrode includes a first type electrode and a second type electrode, and the number of mutual capacitance sensing nodes formed by each of the first type electrode and the second electrode is different from each of the second type. The electrode and the second electrode form a number of mutual capacitance sensing nodes, and the plurality of second electrodes comprise at least a third type electrode and a fourth type electrode, wherein each of the third type electrodes forms a mutual capacitance with the first electrode The number of the corresponding nodes is different from the number of mutual capacitance forming nodes formed by each of the fourth type electrodes and the first electrodes; the plurality of first electrodes are driving electrodes and the plurality of second electrodes are receiving electrodes, or the plurality of first The electrode is a receiving electrode and the plurality of second electrodes are driving electrodes.

Another embodiment of the present invention further includes a touch screen device comprising the single layer mutual capacitance touch screen described above.

Another embodiment of the present invention also includes an electronic device including the above-described touch screen device.

The present invention provides a single-layer mutual-capacitive touch screen and a touch screen. The device and the electronic device are disposed on the two sides of the sensing electrode unit with the first lead wire of the first electrode and the second lead wire of the second electrode, so that the lead wires of the electrode are more properly distributed to the walking. The line space improves the accuracy of the single-layer mutual capacitance and improves the performance of the single-layer mutual capacitance.

1, 2‧‧‧ touch screen

10, 20, 30, 40‧‧‧ sensing electrode unit

101, 102, 103, 104‧‧‧ mutual capacitance

100‧‧‧second electrode

200‧‧‧first electrode

300‧‧‧Touch Control Wafer

201, 202, 203, 204, 205, 301, 318, 319, 336, 337, 354, 355, 372, 701, 714, 715, 728, 729, 742, 743, 756, 801, 825, 826, 850, 851, 875, 876, 900, 901, 918, 919, 936, 937, 954, 955, 972, 1001, 1041, 1042, 1082, 1083, 1123, 1124, 1164‧‧‧ mutual capacitance sensing nodes

B‧‧‧ binding zone

L1, L3, L5, L7‧‧‧ first lead wire

L2, L4, L6, L8‧‧‧ second lead wire

X1~Xm‧‧‧second electrode

Y1~Yn‧‧‧first electrode

1 is a schematic structural view of a single-layer mutual-capacitive touch screen in the prior art; FIG. 2 is a schematic structural view of a first-layer mutual-capacitive touch screen provided by the present embodiment; FIG. A cross-coupling structure of a first electrode and a second electrode in a single-layer mutual-capacitive touch screen provided by the authoring embodiment; FIG. 4 is a touch control in a single-layer mutual-capacitive touch screen provided by the present embodiment FIG. 5 is a schematic structural view of a first embodiment of a single-layer mutual-capacitive touch screen according to the first embodiment of the present invention; FIG. 5b is a single layer of the present invention; A schematic diagram of a second embodiment of a first embodiment of a mutual-capacitive touch screen; FIG. 5c is a schematic structural view of a third embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. The present invention is a schematic diagram of a fourth embodiment of a single-layer mutual-capacitive touch screen. FIG. 5e is a first embodiment of a single-layer mutual-capacitive touch screen. Species structural diagram of embodiment; FIG. 5 is a schematic structural diagram of a sixth embodiment of a single-layer mutual-capacitive touch screen according to the present invention; FIG. 6 is a second embodiment of a single-layer mutual-capacitive touch screen provided by the present embodiment; FIG. 7 is a schematic structural view of a first embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. 7b is a second-layer mutual-capacitive touch screen of the present invention. FIG. 7 is a schematic structural view of a third embodiment of a second embodiment of a single-layer mutual-capacitive touch screen; FIG. 7d is a single-layer mutual capacitance touch FIG. 7e is a schematic structural view of a fifth embodiment of a second embodiment of a single-layer mutual-capacitive touch screen; FIG. 7f is a schematic view of the second embodiment of the second embodiment of the control screen; FIG. A schematic diagram of a structure of a sixth embodiment of a single-layer mutual-capacitive touch screen; FIG. 8 is a structural diagram of a third embodiment of a single-layer mutual-capacitive touch screen provided by the present embodiment. FIG. 9 is a schematic structural view of a first embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. 9b is a third embodiment of a single-layer mutual-capacitive touch screen of the present invention; 2 is a schematic structural view of a third embodiment of the present invention; FIG. 9c is a schematic structural view of a third embodiment of a third embodiment of a single-layer mutual-capacitive touch screen; 9d is a schematic structural view of a fourth embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. 9e is a fifth embodiment of a third-layer mutual-capacitive touch screen of the present invention. FIG. 9f is a schematic structural view of a sixth embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. 10 is a single-layer mutual-capacitive touch provided by the present embodiment. FIG. 11 is a schematic structural view of a first embodiment of a fourth embodiment of a single-layer mutual-capacitive touch screen; FIG. 11b is a single-layer mutual capacitance touch of the present invention. A schematic diagram of a second embodiment of a fourth embodiment of the control screen; FIG. 11c is a schematic structural view of a third embodiment of a fourth embodiment of a single-layer mutual capacitance touch screen; FIG. 11d is a creation A fourth embodiment of a fourth embodiment of a single-layer mutual-capacitive touch screen; FIG. 11e is a fifth embodiment of a fourth embodiment of a single-layer mutual-capacitive touch screen. FIG. 11f is a schematic structural diagram of a sixth embodiment of a single-layer mutual-capacitive touch screen of the present invention; FIG. 12 is a fifth type of a touch screen device provided by the present embodiment. FIG. 13 is a schematic structural diagram of a sixth embodiment of a touch screen device according to an embodiment of the present invention; FIG. 14 is a schematic structural diagram of a seventh embodiment of a touch screen device according to an embodiment of the present invention; FIG. 15 is a schematic structural diagram of an eighth embodiment of a touch screen device according to an embodiment of the present invention.

In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

The implementation of this creation will be described in detail below in conjunction with specific embodiments.

The first embodiment of the present invention provides a single-layer mutual-capacitive touch screen 1 . Referring to FIG. 2 , the method includes: a plurality of sensing electrode units 10 arranged in parallel, each sensing electrode unit 10 including a plurality of first electrodes (eg, The electrodes of Y1 to Yn are respectively shown in FIG. 2) and a plurality of second electrodes (electrodes of X1 to Xm respectively as shown in FIG. 2), and the plurality of first electrodes and the plurality of second electrodes are used for Coupling to form a plurality of mutual capacitance sensing nodes, wherein, for each sensing electrode unit 10, the number of the plurality of first electrodes is a, the number of the plurality of second electrodes is m, and m is a natural number greater than or equal to 5, a is a natural number greater than or equal to 4; a plurality of first lead wires L1, each of the first lead wires L1 is connected to a single first electrode; and a plurality of second lead wires L2, each of the second lead wires L2 is connected to one A separate second electrode.

The first lead wire L1 and the second lead wire L2 connected to the same sensing electrode unit 10 are respectively located on opposite sides of the same sensing electrode unit 10.

Specifically, the touch screen 1 is provided with a plurality of the sensing electrode units 10 arranged together, and each of the first electrodes and each of the second electrodes of each of the sensing electrode units 10 corresponds to a different lead wire L1. a L2 connection, a routing area (not shown) is formed between the adjacent two sensing electrode units 10, for example, the second electrodes of the two sensing electrode units 10 are adjacent to each other, and each of the two electrodes of the two columns of the second electrodes passes through a Different lead wires are connected from the routing area to the binding area B. The binding area B is arranged in sequence with the connection point connected to the lead wiring. The lead wires do not cross each other, and the wiring of the lead wires can be various. As long as they do not intersect each other, a preferred way of routing is: each lead wire of the electrode includes a first lead wire segment and a second lead wire segment, and the first lead wire segment and the second lead wire segment are mutually Vertically connected, the first lead wire segment is connected to the electrode and parallel to the X-axis direction, and the second lead wire segment is connected to the connection point in the binding zone and parallel to the Y-axis direction.

For a sensing electrode unit, the plurality of first electrodes include at least a first type of electrode and a second type of electrode, and each of the first type of electrodes and the second electrode forms a mutual capacitance sensing node different from each of the second type of electrodes The second electrode forms a number of mutual capacitance sensing nodes, and the plurality of second electrodes includes at least a third type electrode and a fourth type electrode, wherein each third type electrode forms a mutual capacitance sensing node with the first electrode different from each A fourth type of electrode forms a mutual capacitance sensing node with the first electrode. Specifically, the first electrode Y1, Y3 to Yn-1 of the first electrode in each column of FIG. 2 belong to the first type electrode, and each column The second electrode Y2, Y4 to Yn of the first electrode belong to the second type of electrode, and the number of mutual capacitance sensing nodes formed by each of the first type electrode and the second electrode is one, for example, the first one of the first electrodes The electrode Y1 and the second electrode form a mutual capacitance 101, and the number of mutual capacitance sensing nodes formed by each of the second electrode and the second electrode is three, for example, the second electrode Y2 and the second electrode of the first electrode are formed. 3 mutual capacitances 102, 103 and 104; The first electrode X1 of the second electrode of the column belongs to the third type electrode, and the second electrode X2 of the second electrode of each column belongs to the fourth type electrode, and each of the third type electrode forms a mutual capacitance sensing node with the first electrode. of The number is two, for example, the first electrode X1 of the second electrode forms two mutual capacitances 101 and 102 with the first electrode, and the number of mutual capacitance sensing nodes formed by each of the fourth type of electrodes and the first electrode is one. For example, the second electrode X2 of the second electrode forms a mutual capacitance 103 with the first electrode; it should be noted that the numbers Y1, Y2 to Yn in the first electrode of each column in FIG. 2 are not according to the first type of electrode and The second type of electrodes are divided. For example, the first electrode in the first column has only Y1 and Y2, and the first electrode labeled Y1 does not belong to the first electrode, and does not represent the first electrode labeled Y2. Belongs to the second type of electrode.

The plurality of first electrodes are driving electrodes and the plurality of second electrodes are receiving electrodes, or the plurality of first electrodes are receiving electrodes and the plurality of second electrodes are driving electrodes, as shown in FIG. 4, the driving electrodes Connected to a touch control wafer 300 for outputting a signal to the touch control wafer 300, the receiving electrode being coupled to the touch control wafer 300 for receiving a signal output by the touch control wafer 300.

Preferably, the number of mutual capacitance sensing nodes formed by each of the second type of electrodes and the second electrode is different from the number of mutual capacitance sensing nodes formed by each of the third type of electrodes and the first electrode, and each of the second type of electrodes and the second The number of mutual capacitance forming nodes of the two electrodes is different from the number of mutual capacitance sensing nodes formed by each of the fourth type electrodes and the first electrodes.

Specifically, as shown in FIG. 2, the number of mutual capacitance sensing nodes formed by the second electrode Y2 and the second electrode in the first electrode is three, and the first electrode X1 of the second electrode forms a mutual capacitance with the first electrode. The number of sensing nodes is two, and the number of mutual capacitance forming nodes formed by the second electrode X2 of the second electrode and the first electrode is one.

Preferably, each of the first type of electrodes and the at least one second electrode form a mutual capacitance sensing node, and each of the second type of electrodes forms a mutual capacitance sensing node with at least two third type electrodes, and at least one fourth type of electrode Forming a mutual capacitance sensing node, each of the third type of electrodes and the at least two first electrodes forming a mutual capacitance sensing node, and each of the fourth type of electrodes and the at least one first electrode is formed Mutual capacitance sensing node.

Preferably, each of the first type of electrodes forms a mutual capacitance with a third type of electrode. Inductive node, each second type electrode and two third type electrodes form two mutual capacitance sensing nodes, and form a mutual capacitance sensing node with at least one fourth type electrode, each third type electrode and two first electrodes Two mutual capacitance sensing nodes are formed, and each of the fourth type electrodes and one second type electrode form a mutual capacitance sensing node.

Specifically, as shown in FIG. 2, the first electrode Y1 and the second electrode in the first electrode The first electrode X1 of the pole forms a mutual capacitance sensing node, and the second electrode Y2 of the first electrode and the two third type electrodes (the first electrode X1 and the third electrode X3 of the second electrode) Forming a mutual capacitance sensing node and forming a mutual capacitance sensing node with a fourth type electrode (the second electrode X2 of the second electrode), and a first electrode X1 and two first electrodes of the second electrode (first The first electrode Y1 of the electrode and the second electrode Y2 of the first electrode form a mutual capacitance sensing node, and the second electrode X2 of the second electrode forms a mutual capacitance sensing node with a first electrode.

Preferably, the first electrode is divided into a first type of electrode according to an area In the second type of electrode, the second electrode is divided into a third type electrode and a fourth type electrode, wherein the area of the second type electrode is J times the area of the first type electrode, and the area of the third type electrode is the fourth type electrode K times, J, k are all positive numbers, and J is greater than K. In the present embodiment, J=3 and K=2.

Preferably, in the embodiment, for a sensing electrode unit, the first electrode includes two a first type of electrode, wherein the two first type electrodes are located at two ends of the plurality of first electrodes, the second type of electrodes are located between the two first type electrodes, and the third type of electrodes are alternated with the fourth type of electrodes Arranged at intervals, and both ends of the plurality of second electrodes are respectively a third type of electrode.

Preferably, each mutual capacitance sensing node is cross-coupled between the first electrode and the second electrode For details, please refer to FIG. 3 , in which the first electrode 200 and the second electrode 100 are cross-coupled to form a mutual capacitance sensing node.

Preferably, the plurality of sensing electrode units are mirror symmetrical, as shown in FIG. 2 The first column of sensing electrode units and the second column of sensing electrode units are mirror symmetrical.

Preferably, each of the sensing electrode units is the same.

Preferably, each of the second type of electrodes forms two mutual capacitance sensing nodes with the two third type electrodes, and forms a mutual capacitance sensing node with a fourth type of electrode.

The present invention further provides a touch screen device including the single layer mutual capacitance touch screen 1 described above.

The touch screen device further includes the touch control chip 300. Referring to FIG. 4, the touch control chip 300 is connected to the first electrode and the second electrode of the plurality of sensing electrode units 10 for capacitive sensing. Get touch information.

The first embodiment of the touch control chip 300 is connected to the plurality of sensing electrode units 10: the plurality of first electrodes are respectively connected to different pins of the touch control chip 300 through a plurality of first lead wires L1, which are The second electrode is divided into a plurality of electrode groups, each electrode group includes at least one second electrode, and the second electrode in the same electrode group is non-adjacent, and the second electrode in the same electrode group passes through the plurality of second lead wires L2 is connected to the same pin of the touch control wafer 300, and the second electrode of the different electrode groups is connected to different pins of the touch control wafer 300.

A second embodiment of the touch control chip 300 is connected to each of the sensing electrode units 10: the plurality of first electrodes are divided into a plurality of electrode groups, each electrode group includes at least one first electrode, and the same electrode group The first electrodes of the same electrode group are non-adjacent, and the first electrodes of the same electrode group are connected to the same pin of the touch control wafer 300 through a plurality of first lead wires L1, and the first electrodes of the different electrode groups are connected to the touch control chip 300. The plurality of second electrodes are respectively connected to different pins of the touch control wafer 300 through the plurality of second lead wires L2.

The second embodiment will be described below with reference to FIG. 2. The plurality of first electrodes are arranged in a row, and the plurality of second electrodes are arranged in a row for each column in each of the sensing electrode units. The electrodes of X1 to Xm in the second electrode are connected to different pins of the touch control chip 300, and the second electrodes in the same position order are connected to the same pin of a touch control chip 300 through the second lead wire L2, each column The electrode in one electrode is divided into two electrode groups, wherein the electrodes in the odd rows in the first electrode of each column are divided into one electrode group, and the electrodes in the even rows in the first electrode of each column are divided into one electrode group. For example, the electrode labeled Y1 in the first column electrode is one electrode group, the electrode labeled Y2 is the other electrode group, and the electrodes labeled Y3, Y4 to Yn in the other column electrodes belong to different electrode groups, the same electrode The first electrode in the group is connected to the same pin of the touch control wafer 300 through the first lead wire L1, and the first electrode in the different electrode group is connected to a different pin of the touch control wafer 300.

In this embodiment, the first electrode of the single-layer mutual-capacitive touch screen is divided into n electrode groups, and the first electrode of each column is divided into two electrode groups. Therefore, the number of columns of the sensing electrode unit is n. /2, where n is a positive multiple of 2 or 2, since there are m electrodes in each column of each of the sensing electrode units 10, the total number of the second electrodes is m×n/2, each second The electrode has a second lead wire L2 to the binding region B. Therefore, there are a total of m×n/2 second lead wires L2; in order to form a first electrode and a second electrode in each of the sensing electrode units 10 to form a mutual correspondence The mutual capacitance senses the node and ensures the symmetry of the pattern. The number of the first electrodes in each column is a=(m+3)/2, and the total number of the first electrodes is (m+3)×n/4, each The first electrode has a first lead wire L1, and therefore, there are (m + 3) × n / 4 first lead wires L1. Therefore, it can be easily concluded that the total number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4, where m = 2k ₁ +3, a=k ₁ +3, k ₁ is a natural number greater than or equal to 1.

Preferably, when the two adjacent columns of the adjacent two columns of the sensing electrode units are adjacent to each other, the two second electrodes having the farthest distance from the binding region in the Y-axis direction are connected to the same tube of the touch control wafer 300. At the time of the foot, the second lead lines L2 of the two second electrodes are connected in the wiring area.

The specific implementation manners in this embodiment are specifically described below by way of example:

For the first embodiment, please refer to FIG. 5a, where m=5, n=4, that is, the number of second electrodes in each column of each sensing electrode unit 10 is five, and there are two columns of sensing electrode units, therefore, the first The total number of the two electrodes is m×n/2=10, and each second electrode has a second lead wire L2, which has a total of m×n/2=10 second lead wires L2; each of the sensing electrode units 10 The number of the first electrodes in each column is a=(m+3)/2=4, and the total number of the first electrodes is (m+3)×n/4=8, and each first electrode has a first one. The lead wire L1 is therefore shared (m × n + n) × 3 / 4 = 8 first lead wires L1. Therefore, it can be easily found that the number of lead wires required is [(m × n × /2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 18. In practical applications, the lowermost adjacent X5 electrode lead wires can be combined, so that the total number of lead wires is 18-1=17, and there are (3m+1)×n/4=(3×5+1)×4 /4=16 mutual capacitance sensing nodes.

For the second embodiment, please refer to FIG. 5b, where m=5, n=8, that is, the number of second electrodes in each column of each sensing electrode unit 10 is five, and there are four columns of sensing electrode units, therefore, the first The total number of the two electrodes is m×n/2=20, and each second electrode has a second lead wire L2, which has a total of m×n/2=20 second lead wires L2; each of the sensing electrode units 10 The number of the first electrodes in each column is a=(m+3)/2=4, and the total number of the first electrodes is (m+3)×n/4=16, and each first electrode has a first one. Lead wire L1, therefore, there are (m + 3) × n / 4 = 16 first lead wires L1. Therefore, it can be easily found that the number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 36. In practical applications, the lowermost adjacent X5 electrode lead wires can be combined, so that the total number of lead wires is 36-2=34, and there are (3m+1)×n/4=32 mutual capacitance sensing nodes.

For a third embodiment, please refer to FIG. 5c, where m=7, n=4, that is, the number of second electrodes in each column of each sensing electrode unit 10 is seven, and there are two columns of sensing electrode units, therefore, the first The total number of the two electrodes is m×n/2=14, and each second electrode has a second lead wire L2, which has a total of m×n/2=14 second lead wires L2; each of the sensing electrode units 10 The number of the first electrodes in each column is a=(m+3)/2=5, and the total number of the first electrodes is (m+3)×n/4=10, each first The electrode has a first lead wire L1, so there are (m+3)×n/4=10 first lead wires L1. Therefore, it can be easily found that the number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 24. In practical applications, the lowermost adjacent X7 electrode lead wires can be combined, so that the total number of lead wires is 24-1=23; and there are (3m+1)×n/4=22 mutual capacitance sensing nodes.

For the fourth embodiment, please refer to Figure 5d, where m=7, n=8, that is, each sense The number of the second electrodes in each column of the electrode unit 10 is seven, and there are four columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=28, and each second electrode has a first The second lead wire L2 has a total of m×n/2=28 lead wires; the number of the first electrodes in each column of each sensing electrode unit 10 is a=(m+3)/2=5, then the first electrode is total The number is (m+3)×n/4=20, and each of the first electrodes has a first lead wire L1. Therefore, there are (m+3)×n/4=20 first lead wires L1. Therefore, it can be easily found that the number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 48. In practical applications, the lowermost adjacent X7 electrode lead wires can be combined such that the total number of leads is 48-2=46; and there are (3m+1)×n/4=44 mutual capacitance sensing nodes.

For the fifth embodiment, please refer to FIG. 5e, where m=9 and n=4, that is, each sense The number of the second electrodes in each column of the electrode unit 10 is nine, and there are two columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=18, and each second electrode has a first The second lead wire L2 has a total of m×n/2=18 second lead wires L2; the number of the first electrodes in each column of each sensing electrode unit 10 is a=(m+3)/2=6, then the first The total number of electrodes is (m+3)×n/4=12, and each first electrode has a first lead wire L1. Therefore, there are (m+3)×n/4=12 first lead wires. L1. Therefore, it can be easily found that the number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 30. Therefore, the total number of leads is (m n+n) 3/4=30. In practical applications, the lowermost adjacent X9 electrode lead wires can be combined, so that the total number of leads is 30-1=29; There are (3m+1)×n/4=28 mutual capacitance sensing nodes.

For the sixth embodiment, please refer to FIG. 5f, where m=9 and n=8, that is, each column The number of the second electrodes in each column of the sensing electrode unit 10 is nine, and there are four columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=36, and each second electrode has a first The two lead wires L2 to the binding area B have a total of m×n/2=36 lead wires; the number of the first electrodes in each column of each column of the sensing electrode unit 10 is a=(m+3)/2=6, then The total number of the first electrodes is (m + 3) × n / 4 = 24, therefore, there are a total of (m + 3) × n / 4 = 24 lead wires. Therefore, it can be easily found that the number of lead wires required is [(m × n / 2) + (m + 3) × n / 4] = (m n + n) 3 / 4 = 60. Therefore, the total number of leads is (m n+n) 3/4=60. In practical applications, the lowermost adjacent X9 electrode lead wires can be combined, so that the total number of leads is 60-2=58; There are a total of (3m+1)×n/4=56 mutual capacitance sensing nodes, and the mutual capacitance sensing node includes a mutual capacitance sensing node 701, a mutual capacitance sensing node 714, a mutual capacitance sensing node 715, and mutual capacitance sensing as shown in FIG. 6f. The node 728, the mutual capacitance sensing node 729, the mutual capacitance sensing node 742, the mutual capacitance sensing node 743, the mutual capacitance sensing node 756, and the like.

The first electrode and the second electrode in the present embodiment are divided into a single node. The line has a lower touch precision than the whole electrode, and the isolation channel is not required between the first electrode and the second electrode; and the first electrode or the second electrode does not need to be provided with a corner, and the symmetry is better; Finally, there is no lead-through line between the first electrode and the second electrode, which does not affect the coupling capacitance. The second embodiment of the present invention is a single-layer mutual-capacitive touch screen 2, see FIG. 6, including multiple juxtapositions. The sensing electrode unit 20 is disposed, and each of the sensing electrode units 20 includes a plurality of first electrodes (electrodes of Y1 to Yn respectively as shown in FIG. 6) and a plurality of second electrodes (X1 as shown in FIG. 6 respectively) For each of the sensing electrode units 20, the plurality of first electrodes include at least a first type of electrode and a second type of electrode, and each of the first type of electrodes and the second electrode forms a different number of mutual capacitance sensing nodes. Forming a number of mutual capacitance sensing nodes for each of the second type of electrodes and the second electrode, and each of the first type of electrodes (eg, the first one of the first electrodes of each column) The number of mutual capacitance sensing nodes formed by Y3 to Yn-1) and the second electrode is one, and each of the second type electrodes (for example, the second electrodes Y2, Y4 to Yn of the first electrodes of the respective columns) and the second The number of the electrodes forming the mutual capacitance sensing node is two, and the plurality of second electrodes includes at least the third type electrode and the fourth type electrode, wherein the number of mutual capacitance sensing nodes formed by each of the third type electrodes and the first electrode is different from Each of the fourth type of electrodes forms a mutual capacitance sensing node with the first electrode, and each of the third type electrodes (the first electrode of the second electrode of each column belongs to the third type electrode) forms a mutual capacitance with the first electrode. The number of sensing nodes is two, and the number of mutual capacitance forming nodes formed by each of the fourth type electrodes (the second one of the second electrodes in each column) and the first electrode is one, specifically, as shown in FIG. The first electrode Y1 and the second electrode of the first electrode form a mutual capacitance sensing node 201, and the second electrode Y2 and the second electrode of the first electrode form four mutual capacitance sensing nodes 202, 203, 204 And 205, the first electrode X1 of the second electrode forms two mutual electricity with the first electrode The capacitive sensing nodes 201 and 202, the second electrode X2 of the second electrode forms a mutual capacitance sensing node 203 with the first electrode.

Preferably, the number of mutual capacitance sensing nodes formed by each of the second type of electrodes and the second electrode is different from the number of mutual capacitance sensing nodes formed by each of the third type of electrodes and the first electrode, and each of the second type of electrodes and the second The number of mutual capacitance forming nodes of the two electrodes is different from the number of mutual capacitance sensing nodes formed by each of the fourth type electrodes and the first electrodes.

Specifically, as shown in FIG. 6, the number of mutual capacitance sensing nodes formed by the second electrode Y2 and the second electrode in the first electrode is four, and the first electrode X1 of the second electrode forms a mutual capacitance with the first electrode. The number of sensing nodes is two, and the number of mutual capacitance forming nodes formed by the second electrode X2 of the second electrode and the first electrode is one.

Preferably, each of the first type of electrodes and the at least one second electrode form a mutual capacitance sensing node, and each of the second type of electrodes forms a mutual capacitance sensing node with at least two third type electrodes, and at least one fourth type of electrode Forming a mutual capacitance sensing node, each of the third type of electrodes and at least two The first electrode forms a mutual capacitance sensing node, and each of the fourth electrode forms a mutual capacitance sensing node with the at least one first electrode.

Preferably, each of the first type of electrodes forms a mutual capacitance sensing node with a third type of electrode, and each of the second type of electrodes and the two third type of electrodes form two mutual capacitance sensing nodes, and at least one fourth The class electrode forms a mutual capacitance sensing node, and each of the third electrode forms two mutual capacitance sensing nodes with the two first electrodes, and each of the fourth electrode forms a mutual capacitance sensing node with a second electrode.

Specifically, as shown in FIG. 6, the first electrode Y1 of the first electrode and the first electrode X1 of the second electrode form a mutual capacitance sensing node, and the second electrode Y2 of the first electrode respectively has two The three types of electrodes (the first electrode X1 and the fourth electrode X4 of the second electrode) form a mutual capacitance sensing node and two second type electrodes (the second electrode X2 and the third of the second electrodes) The electrode X3) forms a mutual capacitance sensing node, and the first electrode X1 of the second electrode forms mutual mutual with the two first electrodes (the first electrode Y1 of the first electrode and the second electrode Y2 of the first electrode) The capacitive sensing node, the second electrode X2 of the second electrode forms a mutual capacitance sensing node with a first electrode.

Preferably, the first electrode is divided into a first type electrode and a second type electrode according to different areas, and the second electrode is divided into a third type electrode and a fourth type electrode, wherein the area of the second type electrode is J times the area of one type of electrode, the area of the third type electrode is K times the area of the fourth type electrode, J, k are both positive numbers, and J is greater than K, in this embodiment J=4, K=2.

Preferably, in the embodiment, for a column of sensing electrode units, the first electrode includes two first type electrodes, and the two first type electrodes are located at two ends of the plurality of first electrodes, and the second type electrode is located at the Between the two first type electrodes, the third type electrode and the two fourth type electrodes are alternately arranged, and the two ends of the plurality of second electrodes are respectively the third type of electrodes.

Preferably, the plurality of sensing electrode units 20 are mirror-symmetrical, as shown in FIG. The first column of sensing electrode units shown and the second column of sensing electrode units are mirror symmetrical.

Preferably, each of the sensing electrode units is the same.

Preferably, each of the second type of electrodes forms two mutual capacitance sensing nodes with the two third type electrodes, and forms two mutual capacitance sensing nodes with the two fourth type electrodes.

The present invention further provides a touch screen device including the single layer mutual capacitance touch screen described above.

The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 6), and the touch control chip 300 is connected to both the first electrode and the second electrode in each of the sensing electrode units 20 for Capacitive sensing is performed to obtain touch information.

Specifically, the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and the electrodes of X1 to Xm in the second electrodes of the columns in each of the sensing electrode units 20 are connected to the touch control wafer 300. The different pins, the second electrodes in the same positional order are connected to the same pin of a touch control wafer 300 through a plurality of second lead wires L4. The electrodes in the first electrode of each column are divided into two electrode groups, wherein the electrodes in the odd rows in the first electrode of each column are divided into one electrode group, and the electrodes in the even rows in the first electrode of each column are divided into one electrode. The electrode group, for example, the electrode labeled Y1 in the first column electrode is one electrode group, the electrode labeled Y2 is the other electrode group, and the electrodes labeled Y3, Y4 to Yn in the other column electrodes belong to different electrode groups. The first electrode in the same electrode group is connected to the same pin of the touch control wafer 300 through a plurality of first lead wires L3, and the first electrode of the different electrode groups is connected to different pins of the touch control wafer 300.

In this embodiment, the first electrode of the single-layer mutual-capacitive touch screen is divided into n electrode groups, and the first electrode of each column is divided into two electrode groups. Therefore, the number of columns of the sensing electrode unit 20 is n/2, where n is a positive multiple of 4 or 4, since each column of the second electrode of each column of each sensing electrode unit 20 has m second electrodes, the total number of second electrodes is m×n/2, each The second electrode has a lead wire to the binding area. Therefore, there are a total of m×n/2 second lead wires L4; in order to make the second electrode of each sensing electrode unit 20 and the first electrode form mutual mutual capacitance The sensing node ensures the symmetry of the graphic. Therefore, the number of the first electrodes in each column of each sensing electrode unit 20 is a=(m+5)/3, and the total number of the first electrodes is (m+5)× n/6, each of the first electrodes has a first lead wire L3, and therefore, there are (m + 5) × n / 6 first lead wires L3. Therefore, it can be easily concluded that the total number of lead wires required is (4m+5)×n/6, where m=3k ₃ +4, a=k ₃ +3, and k ₃ is a natural value greater than or equal to 1. number.

The specific implementation manners in this embodiment are specifically described below by way of example:

For the first embodiment, please refer to FIG. 7a, where m=7, n=4, that is, the number of second electrodes in each column of each sensing electrode unit 20 is seven, and there are two columns of sensing electrode units, therefore, the first The total number of the two electrodes is m×n/2=14, and each second electrode has a second lead wire L4, which has a total of m×n/2=14 second lead wires L4; each of the sensing electrode units 20 The number of the first electrodes in each column is a=(m+5)/3=4, and the total number of the first electrodes is (m+5)×n/6=8, and each first electrode has a first one. Lead wire L3, therefore, there are (m + 5) × n / 6 = 8 first lead wires L3. Therefore, it can be easily found that the number of lead wires required is (4m + 5) × n / 6 = 22. In practical applications, the lowermost adjacent X7 electrode lead wires can be combined such that the total number of leads is 22-1=21; and there are (4m+2)×n/6=20 mutual capacitance sensing nodes.

For the second embodiment, please refer to FIG. 7b, where m=7, n=8, that is, the number of second electrodes in each column of each sensing electrode unit 20 is seven, and there are four columns of sensing electrode units, therefore, the first The total number of the two electrodes is m×n/2=28, and each second electrode has a second lead wire L4, which has a total of m×n/2=28 second lead wires L4; each of the sensing electrode units 20 The number of the first electrodes in each column is a=(m+5)/3=4, and the total number of the first electrodes is (m+5)×n/6=16, and each first electrode has a first one. Lead wire L3, therefore, there are (m + 5) × n / 6 = 16 first lead wires L3. Therefore, it can be easily found that the number of lead wires required is (4m + 5) × n / 6 = 44. In practical application, The lowermost adjacent X7 electrode lead wires can be combined such that the total number of leads is 44-2 = 42; and, there are (4m + 2) x n / 6 = 40 mutual capacitance sensing nodes.

For a third embodiment, please refer to FIG. 7c, where m=10, n=4, ie each The number of the second electrodes in each column of the sensing electrode unit 20 is ten, and there are two columns of sensing electrode units 20. Therefore, the total number of the second electrodes is m×n/2=20, and each second electrode has one. The second lead wire L4 has a total of m×n/2=20 second lead wires L4; the number of the first electrodes in each column of each column of the sensing electrode unit 20 is a=(m+5)/3=5, then The total number of electrodes is (m+5)×n/6=10, and each first electrode has a first lead wire L3. Therefore, there are (m+5)×n/6=10 first leads. Wiring L3. Therefore, it can be easily concluded that the total number of leads is (m n+n) 3/4=(5×4+4)×3/4=30. In practical applications, the lowermost adjacent X10 electrode leads. The wiring can be combined such that the total number of leads is 30-1 = 29; and there are (4m + 2) x n / 6 = 28 mutual capacitance sensing nodes.

For the fourth embodiment, please refer to Figure 7d, where m=10, n=8, ie each The number of the second electrodes in each column of the sensing electrode unit 20 is ten, and there are four columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=40, and each second electrode has a first The second lead wire L4 has a total of m×n/2=40 second lead wires L4; the number of the first electrodes in each column of each sensing electrode unit 20 a=(m+5)/3=5, then the first The total number of electrodes is (m+5)×n/6=20, and each first electrode has a first lead wire L3. Therefore, there are (m+5)×n/6=20 first lead wires. L3. Therefore, it can be easily concluded that the total number of leads is (m n+n) 3/4=(5×4+4)×3/4=60. In practical applications, the lowermost adjacent X10 electrode leads The wiring can be combined such that the total number of leads is 60-2 = 58; and there are (4m + 2) x n / 6 = 56 mutual capacitance sensing nodes.

For the fifth embodiment, please refer to FIG. 7e, where m=13, n=4, ie each The number of the second electrodes in each column of the sensing electrode unit 20 is 13 and there are 2 columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=26, and each second electrode has a first Two lead wires L4, a total of m × n / 2 = 26 second lead wires L4; each of each of the sensing electrode units 20 The number of the first electrodes in the column a=(m+5)/3=6, then the total number of the first electrodes is (m+5)×n/6=12, and each first electrode has a first lead. Wiring L3, therefore, there are (m+5)×n/6=12 first lead wires L3. Therefore, it can be easily concluded that the total number of leads is (m n+n)3/4=(5×4+4)×3/4=38. In practical applications, the lowermost adjacent X13 electrode leads The wiring can be combined such that the total number of leads is 38-1 = 37; and there are (4m + 2) x n / 6 = 36 mutual capacitance sensing nodes.

For the sixth embodiment, please refer to FIG. 7f, where m=13, n=8, ie each The number of the second electrodes in each column of the sensing electrode unit 20 is 13 second electrodes, and there are 4 columns of sensing electrode units. Therefore, the total number of the second electrodes is m×n/2=52, and each second electrode is There is a second lead wire L4, which has a total of m×n/2=52 second lead wires L4; the number of the first electrodes in each column of each column of the sensing electrode unit 20 is a=(m+5)/3=6, Then the total number of the first electrodes is (m+5)×n/6=24, and each of the first electrodes has a first lead wire L3 to the binding region, and therefore, (m+5)×n/6 = 24 first lead wires L3. Therefore, it can be easily concluded that the total number of leads is (m n+n) 3/4=(5×4+4)×3/4=76. In practical applications, the lowermost adjacent X12 electrode leads The wiring can be combined such that the total number of leads is 76-2=74; and there are (4m+2)×n/6=72 mutual capacitance sensing nodes, and the capacitance sensing node includes the mutual capacitance sensing node as shown in FIG. 10f. 901, a mutual capacitance sensing node 918, a mutual capacitance sensing node 919, a mutual capacitance sensing node 936, a mutual capacitance sensing node 937, a mutual capacitance sensing node 954, a mutual capacitance sensing node 955, and a mutual capacitance sensing node 972.

The third embodiment of the present invention is a single-layer mutual capacitance touch screen, please refer to the figure. 8, comprising: a plurality of sensing electrode units 30 arranged side by side, each sensing electrode unit 30 comprising a plurality of first electrodes (electrodes of Y1 to Yn respectively as shown in FIG. 8) and a plurality of second electrodes (as shown in FIG. The electrodes of X1 to Xm are respectively shown in FIG. 8 , and the plurality of first electrodes and the plurality of second electrodes are used for coupling to form a plurality of mutual capacitance sensing nodes, wherein, for each sensing electrode unit 30, The number of the plurality of first electrodes is a, the number of the plurality of second electrodes is m, m is a natural number greater than or equal to 7, and a is a natural number greater than or equal to 7; a plurality of first lead wires L5, each of the plurality A lead wire L5 is connected to a single first electrode; and a plurality of second lead wires L6 are connected, and each second lead wire L6 is connected to a separate second electrode.

The first lead wire L5 and the second lead wire L6 connected to the same sensing electrode unit 30 are respectively located on opposite sides of the same sensing electrode unit 30.

For a sensing electrode unit 30, the plurality of first electrodes include at least a first type of electrode and a second type of electrode, and the number of mutual capacitance sensing nodes formed by each of the first type of electrodes and the second electrode is different from each of the second type of electrodes Forming a number of mutual capacitance sensing nodes with the second electrode, the plurality of second electrodes including at least a third type of electrode and a fourth type of electrode, wherein the number of mutual capacitance sensing nodes formed by each of the third type of electrodes and the first electrode is different from Each of the fourth type of electrodes forms a number of mutual capacitance sensing nodes with the first electrode, the plurality of first electrodes further comprising a fifth type of electrode, the plurality of second electrodes further comprising a sixth type of electrode, wherein, for a sensing electrode In unit 30, the number of electrodes of the first type is the same as the number of electrodes of the sixth type, the number of electrodes of the second type is the same as the number of electrodes of the fourth type, and the number of electrodes of the fifth type is the same as the number of electrodes of the third type.

Preferably, as shown in FIG. 8, each of the first type of electrodes (for example, the first electrode Y1 of the first electrode of the first column) forms a mutual capacitance sensing node with the second electrode and each of the fourth type electrodes ( For example, the second electrode X1) of the second electrode of the first column has the same number of mutual capacitance sensing nodes as the first electrode, and each is a mutual capacitance sensing node; and each second electrode (for example, the first electrode of the first column) The first electrode Y2) forms a mutual capacitance sensing node with the second electrode and each sixth type electrode (for example, the penultimate electrode Xm-1 of the second electrode of the first column) forms a mutual capacitance with the first electrode. The number of sensing nodes is the same, and each is three mutual capacitance sensing nodes; each fifth class The number of mutual capacitance sensing nodes formed by the electrodes (eg, the last electrode Y3 of the first electrode of the first column) and the second electrode is the same as that of each of the third type electrodes (eg, the first electrode X1 of the second electrode of the first column) The number of mutual capacitance forming nodes formed by one electrode is the same, and each is two mutual capacitance sensing nodes;

Preferably, the arrangement of the plurality of first electrodes is the same as the arrangement of the plurality of second electrodes in an upside down manner, and the plurality of first electrodes are respectively connected to the second electrodes that are vertically inverted. The correspondence is the same.

Preferably, the areas of the first type electrode, the second type electrode and the fifth type electrode are different, and the areas of the third type electrode, the fourth type electrode and the sixth type electrode are different, and the area of the first type electrode is the fourth The area of the class electrode is the same, the area of the fifth type electrode is the same as the area of the third type electrode, and the area of the second type electrode is the same as the area of the sixth type electrode.

Specifically, in the embodiment, the area of the second type electrode is three times the area of the first type electrode, the area of the fifth type electrode is twice the area of the first type electrode, and the area of the third type electrode is the fourth. The area of the electrode of the sixth type is twice, and the area of the electrode of the sixth type is three times the area of the electrode of the fourth type.

In each column of the first electrodes, the first electrode is a first electrode of the first category, the second category are the first electrode from the second electrode through the first electrodes a _1, a ₁ + 1'd from The first electrode and the fifth electrode of the first electrode to the first electrode are alternately arranged, the first a ₁ +1 first electrode is a first electrode, and the first first electrode is a fifth type electrode, _{wherein, a = 3k 2 + 4,} a 1 = k 2 + 2, k 2 is a natural number greater than or equal to 1; each column in the second electrode, the second electrode from the first to the m ₁ -th th The third electrode and the fourth electrode in the second electrode are alternately arranged, the second electrode in the odd row is the third electrode, and the second electrode in the even row is the fourth electrode, from the m ₁ +1 The second electrode to the m-1th second electrode are all the sixth electrode, and the mth second electrode is the third electrode, wherein m=3k ₂ +4, m ₁ =2k ₂ +2,k ₂ is a natural number greater than or equal to 1; each of the first electrode and a second electrode type forming a mutual capacitance sensing nodes, each of the three second electrode adjacent a second electrode formed type three mutual capacitance sensing nodes Each of the fifth type electrodes and the two adjacent second electrodes form two mutual capacitance sensing nodes, and each of the third type electrodes and the adjacent two first electrodes form two mutual capacitance sensing nodes, each of which is fourth The class electrode forms a mutual capacitance sensing node with a first electrode, and each of the sixth electrode forms three mutual capacitance sensing nodes with the adjacent three first electrodes.

The present invention further provides a touch screen device including the single layer mutual capacitance touch screen described above.

The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 8). The touch control chip 300 is connected to the first electrode and the second electrode of the plurality of sensing electrode units 30. For capacitive sensing, touch information is obtained.

Specifically, the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and the electrodes of X1 to Xm in the second electrode of each column in each of the sensing electrode units 30 are connected to the touch control wafer 300. The different pins, the second electrodes in the same positional order are connected to the same pin of a touch control wafer 300 via the second lead wire L6. The electrodes in the first electrode of each column are divided into three electrode groups, wherein the electrodes at the first, fourth and third positions in the first electrode of each column are divided into one electrode group, which will be located in the first electrode of each column. The electrodes at the 2nd, 5th, and 3j+2 positions are divided into one electrode group, and the electrodes at the 3, 6 and 3j+3 positions in the first electrode of each column are divided into one electrode group, and j is greater than or equal to 0. Integer, for example, the electrode labeled Y1 in the first column electrode is the first electrode group, the electrode labeled Y2 is the second electrode group, the electrode labeled Y3 is the third electrode group, and the other column electrodes are labeled The electrodes of Y4, Y5 to Yn belong to different electrode groups, and the first electrode in the same electrode group is connected to the same pin of the touch control wafer 300 through the first lead wire L5, and the first electrode in the different electrode group is connected. To the different pins of the touch control wafer 300.

In this embodiment, the first electrode of the single-layer mutual-capacitive touch screen is divided into n electrode groups, and the first electrode of each column is divided into three electrode groups. Therefore, the number of columns of the sensing electrode unit is n. /3, where n is a positive multiple of 3 or 3, since the number of second electrodes in each column of each column of sensing electrode units 30 is m, where m = 3k ₃ + 4, and k ₃ is a natural number greater than or equal to 1, The total number of the second electrodes is m×n/3, and each of the second electrodes has a second lead wire L6. Therefore, there are a total of m×n/3 second lead wires L6; in order to make each column of the sensing electrode unit The second electrode and the first electrode form a mutually mutual mutual capacitance sensing node, and the symmetry of the pattern is ensured. The number of the first electrodes in each column of each column of the sensing electrode unit 30 is a=m, and the first electrode is The number is m×n/3, and each of the first electrodes has a first lead wire L5. Therefore, there are a total of m×n/3 first lead wires L5. Therefore, the number of lead wires required is [m × n / 3 + m × n / 3] = 2m × n / 3. The second electrode of each column of the sensing electrode unit 30 forms a mutual mutual capacitance sensing node corresponding to the first electrode, and has a total of (2m-1)*n/3 capacitor nodes.

The specific implementation manners in this embodiment are specifically described below by way of example:

For the first embodiment, please refer to FIG. 9a, where m=7 and n=6, that is, the number of second electrodes in each column of each column of sensing electrode units 30 is seven, and there are two columns of sensing electrode units 30, therefore, The total number of the second electrodes is m×n/3=14, and each second electrode has a second lead wire L6, which has a total of m×n/2=14 second lead wires L6; each column of sensing electrode units 30 The number of the first electrodes in each column is a=m=7, and the total number of the first electrodes is m×n/3=14, and each of the first electrodes has a first lead wire L5. Therefore, there are a total of m× n/3=14 first lead wires L5. Therefore, it can be easily found that the number of lead wires required is 2m × n / 3 = 28. In practical applications, the lowermost adjacent X7 electrode lead wires can be combined, so that the total number of lead wires is 28-1=27; and there are (2m-1)×n/3=26 mutual capacitance sensing nodes.

For the second embodiment, please refer to FIG. 9b, where m=7, n=12, that is, the number of second electrodes in each column of each column of sensing electrode units 30 is seven, and there are four columns of sensing electrodes. Unit 30, therefore, the total number of second electrodes is m×n/3=28, and each second electrode has a second lead wire L6, which has a total of m×n/2=28 second lead wires L6; The number of the first electrodes in each column of the column of the sensing electrode unit 30 is a=m=7, and the total number of the first electrodes is m×n/3=28, and each of the first electrodes has a first lead wire L5. Therefore, there are a total of m × n / 3 = 28 first lead wires L5. Therefore, the number of lead wires required is 2m × n / 3 = 56. In practical applications, the lowermost adjacent X7 electrode lead wires can be combined such that the total number of leads is 56-2=54; and there are (2m-1)×n/3=52 mutual capacitance sensing nodes.

For a third embodiment, please refer to FIG. 9c, where m=10 and n=6, ie each The number of the second electrodes in each column of the column sensing electrode unit 30 is ten, and there are two columns of sensing electrode units 30. Therefore, the total number of the second electrodes is m×n/3=20, and each second electrode has A second lead wire L6 has a total of m×n/2=20 second lead wires L6; the number of the first electrodes in each column of each column of the sensing electrode unit 30 is a=m=10, and the total number of the first electrodes For m×n/3=20, each of the first electrodes has a second lead wire L6, and therefore, there are a total of m×n/3=20 second lead wires L6. Therefore, it can be easily found that the number of lead wires required is 2m × n / 3 = 40. In practical applications, the lowermost adjacent X10 electrode lead wires can be combined such that the total number of leads is 40-1=39; and there are (2m-1)×n/3=38 mutual capacitance sensing nodes.

For the fourth embodiment, please refer to Figure 9d, where m=10 and n=12, ie each The number of the second electrodes in each column of the column sensing electrode unit 30 is ten, and there are four columns of sensing electrode units 30. Therefore, the total number of the second electrodes is m×n/3=40, and each second electrode has A second lead wire L6 has a total of m×n/2=40 second lead wires L6; the number of the first electrodes in each column of each column of the sensing electrode unit 30 is a=m=10, and the total number of the first electrodes For m×n/3=40, each of the first electrodes has a first lead wire L5, and therefore, there are a total of m×n/3=40 first lead wires L5. Therefore, the number of lead wires required is 2m × n / 3 = 80. In practical applications, the lowermost adjacent X10 electrode lead wires can be combined, so that the total number of leads is 80-2=78; and there are (2m-1)× n/3 = 76 mutual capacitance sensing nodes.

For the fifth embodiment, please refer to FIG. 9e, where m=13, n=6, ie each The number of the second electrodes in each column of the column sensing electrode unit 30 is 13 second electrodes, and there are 2 columns of sensing electrode units 30. Therefore, the total number of the second electrodes is m×n/3=26, and each second The electrode has a second lead wire L6, which has a total of m×n/2=26 second lead wires L6; the number of the first electrodes in each column of each column of the sensing electrode unit 30 is a=m=13, then the first electrode The total number is m×n/3=26, and each of the first electrodes has a first lead wire L5. Therefore, there are a total of m×n/3=26 first lead wires L5. Therefore, the number of lead wires required is 2m × n / 3 = 52. In practical applications, the lowermost adjacent X13 electrode lead wires can be combined such that the total number of leads is 52-1=51; and there are (2m-1)×n/3=50 mutual capacitance sensing nodes.

For the sixth embodiment, please refer to FIG. 9f, where m=13, n=12, ie each The number of the second electrodes in each column of the column sensing electrode unit 30 is 13 second electrodes, and there are 4 columns of sensing electrode units 30. Therefore, the total number of the second electrodes is m×n/3=52, and each second The electrode has a second lead wire L6, which has a total of m×n/2=52 second lead wires L6; the number of the first electrodes in each column of each column of the sensing electrode unit 30 is a=m=13, then the first electrode The total number is m×n/3=52, and each of the first electrodes has a first lead wire L5. Therefore, there are a total of m×n/3=52 first lead wires L5. Therefore, the number of lead wires required is 2m × n / 3 = 104. In practical applications, the lowermost adjacent X13 electrode lead wires can be combined, such that the total number of leads is 104-2=102; and, there are (2m-1)×n/3=100 mutual capacitance sensing nodes, The capacitive sensing node includes a mutual capacitance sensing node 801, a mutual capacitance sensing node 825, a mutual capacitance sensing node 826, a mutual capacitance sensing node 850, a mutual capacitance sensing node 851, a mutual capacitance sensing node 875, and a mutual capacitance sensing node 876 as shown in FIG. 8f. And a mutual capacitance sensing node 900 and the like.

The fourth embodiment of the present invention is a single-layer mutual-capacitive touch screen, please refer to the figure. 10, the difference from the third embodiment described above is that the area of the second type of electrode is the first type of electrode 4 times the area, the area of the fifth type electrode is twice the area of the first type electrode, the area of the third type electrode is twice the area of the fourth type electrode, and the area of the sixth type electrode is the fourth type. 4 times the area of the electrode.

In the first electrode of each column, the first first electrode is a first type electrode, and the second first electrode to the a _second first electrode are both second type electrodes, from the a ₂ +1th a first electrode to a first electrode of a ₂ + 3a ₃ of the first electrode to a fifth electrode type, the remaining first electrode is a first type electrode, _{wherein, a = 4k 4 + 9,} a 2 = k ₄ +3,1 a ₃ k ₄ + 2, k ₄ is a natural number greater than or equal to 1, and a ₃ is an integer.

In the second electrode of each column, the third m ₄ -2 second electrodes from the first second electrode to the m ₃ second electrodes are the third type electrode, and the remaining second electrodes are the fourth type electrode , from the m ₃ +1 second electrode to the m-1th second electrode is a sixth type electrode, and the mth second electrode is a fourth type electrode, wherein m=4k ₄ +9, m ₃ = 3k ₄ +6,1 m ₄ k ₄ + 2, k ₄ is a natural number greater than or equal to 1, and m ₄ is an integer.

Each of the first type of electrodes and one of the second electrodes form a mutual capacitance sensing node, and each of the second type of electrodes and the adjacent four second electrodes form four mutual capacitance sensing nodes, each of the fifth type of electrodes and adjacent The two second electrodes form two mutual capacitance sensing nodes, each of the third type electrodes and the two adjacent first electrodes form two mutual capacitance sensing nodes, and each of the fourth type electrodes forms a first electrode with a first electrode The mutual capacitance sensing node, each of the sixth type electrodes and the adjacent four first electrodes form four mutual capacitance sensing nodes.

The present invention further provides a touch screen device including the single layer mutual capacitance touch screen described above.

The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 10), and the touch control chip 300 is connected to the first electrode and the second electrode of the plurality of sensing electrode units 40. For capacitive sensing, touch information is obtained.

Specifically, the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and the electrodes of X1 to Xm in the second electrodes of the respective columns in each of the sensing electrode units 40 are connected to the touch control wafer 300. The different pins, the second electrodes in the same positional order are connected to the same pin of a touch control wafer 300 via the second lead wire L8. The electrodes in the first electrode of each column are divided into four electrode groups, wherein the electrodes at the first, fifth and fourth steps of the first electrode of each column are divided into one electrode group, which will be located in the first electrode of each column. The electrodes at the 2nd, 6th, and 4j+2 positions are divided into one electrode group, and the electrodes at the 3, 7, and 4j+3 positions in the first electrode of each column are divided into one electrode group, which will be located first in each column. The electrodes at positions 4, 8, and 4j+4 in the electrode are divided into one electrode group, and j is an integer greater than or equal to 0. For example, the electrode labeled Y1 in the first column electrode is the first electrode group, and the number is Y2. The electrode is the second electrode group, the electrode labeled Y3 is the third electrode group, the electrode labeled Y4 is the fourth electrode group, and the electrodes labeled Y5, Y6 to Yn in the other column electrodes belong to different electrodes. The first electrode in the same electrode group is connected to the same pin of the touch control wafer 300 through the first lead wire L7, and the first electrode in the different electrode group is connected to a different pin of the touch control chip 300.

In this embodiment, the first electrode of the single-layer mutual-capacitive touch screen is divided into n electrode groups, and the first electrode of each column is divided into four electrode groups. Therefore, the number of columns of the sensing electrode unit 40 is n/4, where n is a positive multiple of 8 or 8, since the number of second electrodes in each column of each column of sensing electrode units 40 is m, the total number of second electrodes is m×n/4, each The second electrode has a second lead wire L8. Therefore, there are a total of m×n/4 second lead wires L8; in order to make the second electrode of each column of the sensing electrode unit 40 and the first electrode form a mutual mutual capacitance sensing node. And ensuring the symmetry of the pattern, the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m, and the total number of the first electrodes is m×n/4, and each of the first electrodes has a first A lead wire L7, therefore, there are a total of m × n / 4 first lead wires L7. Therefore, the number of lead wires required is m × n / 2. The second electrode of each column of the sensing electrode unit 40 and the first electrode form mutually corresponding mutual capacitance The sensing node has a total of (2m-1)*n/4 capacitor nodes.

The specific implementation manners in this embodiment are specifically described below by way of example:

For the first embodiment, please refer to FIG. 11a, where m=13, n=8, ie each The number of the second electrodes in each column of the column sensing electrode unit 40 is 13 and there are 2 columns of sensing electrode units 40. Therefore, the total number of the second electrodes is m×n/4=26, and each second electrode has A second lead wire L8 has a total of m×n/2=26 second lead wires L8; the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m=13, and the total number of the first electrodes For m×n/4=26, each of the first electrodes has a second lead wire L8, and therefore, there are a total of m×n/4=26 second lead wires L8. Therefore, the number of lead wires required is m × n / 2 = 52. In practical applications, the lowermost adjacent X13 electrode lead wires can be combined such that the total number of leads is 52-1=51; and there are (2m-1)×n/4=50 mutual capacitance sensing nodes.

For the second embodiment, please refer to FIG. 11b, where m=13, n=16, ie each The number of second electrodes in each column of one column of sensing electrode units 40 is 13 and there are 4 columns of sensing electrode units 40. Therefore, the total number of second electrodes is m×n/4=52, and each second electrode has A second lead wire L8 is connected to the binding area, and there are a total of m×n/2=52 second lead wires L8; the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m=13, then the first The total number of electrodes is m × n / 4 = 52, and each of the first electrodes has a first lead wire L7. Therefore, there are a total of m × n / 4 = 52 first lead wires L7. Therefore, the number of lead wires required is m × n / 2 = 104. In practical applications, the lowermost adjacent X13 electrode lead wires can be combined such that the total number of leads is 104-2=102; and there are (2m-1)×n/4=100 mutual capacitance sensing nodes.

For a third embodiment, please refer to FIG. 11c, where m=17, n=8, ie each The number of the second electrodes in each column of the column sensing electrode unit 40 is 17, and there are two columns of sensing electrode units 40. Therefore, the total number of the second electrodes is m×n/4=34, and each second electrode has a second lead wire L8, a total of m × n / 2 = 34 second lead wires L8; each column of sensing electrode unit 40 The number of the first electrodes in each column is a=m=17, and the total number of the first electrodes is m×n/4=34, and each of the first electrodes has a first lead wire L7. Therefore, there are a total of m× n/4=34 first lead wires L7. Therefore, the number of lead wires required is m × n / 2 = 68. In practical applications, the lowermost adjacent X17 electrode lead wires can be combined such that the total number of leads is 68-1=67; and there are (2m-1)×n/4=66 mutual capacitance sensing nodes.

For the fourth embodiment, please refer to Figure 11d, where m=17, n=16, ie each The number of second electrodes in each column of the column of sensing electrodes 40 is 17, and there are 4 columns of sensing electrode units 40. Therefore, the total number of second electrodes is m×n/4=68, and each second electrode has A second lead wire L8 has a total of m×n/2=68 second lead wires L8; the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m=17, and the total number of the first electrodes For m×n/4=68, each of the first electrodes has a first lead wire L7, and therefore, there are a total of m×n/4=68 first lead wires L7. Therefore, the number of lead wires required is m × n / 2 = 136. In practical applications, the lowermost adjacent X17 electrode lead wires can be combined such that the total number of leads is 136-2=134; and there are (2m-1)×n/4=132 mutual capacitance sensing nodes.

For the fifth embodiment, please refer to FIG. 11e, where m=21, n=8, ie each The number of the second electrodes in each column of the column sensing electrode unit 40 is 21, and there are two columns of sensing electrode units 40. Therefore, the total number of the second electrodes is m×n/4=42, and each second electrode has A second lead wire L8 is connected to the binding area, and there are a total of m×n/2=42 second lead wires L8; the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m=21, then the first The total number of electrodes is m × n / 4 = 42, each of the first electrodes has a first lead wire L7, therefore, there are a total of m × n / 4 = 42 first lead wires L7. Therefore, the number of lead wires required is m × n / 2 = 84. In practical applications, the lowermost adjacent X21 electrode lead wires can be combined such that the total number of leads is 84-1=83; and there are (2m-1)×n/4=82 mutual capacitance sensing nodes.

For the sixth embodiment, please refer to FIG. 11f, where m=21, n=16, ie each The number of second electrodes in each column of the column of sensing electrodes 40 is 21 second electrodes, and there are 4 columns of sensing electrode units 40. Therefore, the total number of second electrodes is m×n/4=84, and each second The electrode has a second lead wire L8, which has a total of m×n/2=84 second lead wires L8; the number of the first electrodes in each column of each column of the sensing electrode unit 40 is a=m=21, then the first electrode The total number is m × n / 4 = 84, and each of the first electrodes has a first lead wire L7, and therefore, there are a total of m × n / 4 = 84 first lead wires L7. Therefore, the number of lead wires required is m × n / 2 = 168. In practical applications, the lowermost adjacent X21 electrode lead wires can be combined, such that the total number of leads is 168-2=166; and there are (2m-1)×n/4=164 mutual capacitance sensing nodes, the mutual capacitance The sensing node includes a mutual capacitance sensing node 1001, a mutual capacitance sensing node 1041, a mutual capacitance sensing node 1042, a mutual capacitance sensing node 1082, a mutual capacitance sensing node 1083, a mutual capacitance sensing node 1123, and a mutual capacitance sensing node 1124. Mutual capacitance sensing node 1164 and the like.

A fifth embodiment of the present invention is a touch screen device, as shown in FIG. The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 12), and the touch control chip 300 is connected to both the first electrode and the second electrode of the plurality of sensing electrode units for performing Capacitive sensing obtains touch information.

When the plurality of sensing electrode units are mirror symmetrical, the two are mirror symmetrical rows The adjacent two sensing electrode units of the column are divided into a group, the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and the two columns of the second electrodes of each group of sensing electrodes are located in two columns Between an electrode, the first electrode of each column is respectively connected to different pins of the touch control chip 300 through the first lead wires, and the second electrode of each column is respectively connected to the different lead of the touch control chip 300 through the second lead wires. The second electrodes, which are in the same positional order, are connected to the same pin of the touch control wafer 300 through the second lead wires.

The opposite side edges of the plurality of sensing electrode units are two columns of first electrodes, The first electrode in the same position order passes through the first lead wire for the two columns of first electrodes Connect to different pins of the touch control wafer 300.

Therefore, the first electrode is commonly connected to the 32 pins of the touch control chip 300, The second electrode is connected to the 13 pins of the touch control chip 300, and the capacitive sensing node includes a mutual capacitance sensing node 301, a mutual capacitance sensing node 318, a mutual capacitance sensing node 319, and a mutual capacitance sensing node 336. The mutual capacitance sensing node 337 , the mutual capacitance sensing node 354 , the mutual capacitance sensing node 355 , the mutual capacitance sensing node 372 , etc., have the advantages that the touch position is more easily recognized, and the linearity and the touch precision are improved.

A sixth embodiment of the present invention is a touch screen device, as shown in FIG. The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 13), and the touch control chip 300 is connected to both the first electrode and the second electrode of the plurality of sensing electrode units for performing Capacitive sensing obtains touch information.

The plurality of sensing electrode units are divided into a left half and a right half according to a region as a whole. In part, the left half includes a plurality of sensing electrode units, the right half includes a plurality of sensing electrode units, and the number of sensing electrode units included in each of the left half and the right half is the same.

For the second electrode of each column in the left half, the second in the same position order The electrode is connected to the same pin of the touch control wafer 300 through the second lead wire, for example, the first second electrode of the first column of the first column and the first electrode of the second electrode of the second column of the second half The second electrode, the first second electrode of the third column of the second electrode, and the first second electrode of the fourth column of the second electrode are connected to the same pin of the touch control wafer 300 via the second lead wire.

For the second electrode of each column in the right half, the second in the same position order The electrodes are connected to the same pin of the touch control wafer 300 through the second lead wires; for example, the first second electrode of the first column of the second column in the right half, and the first electrode of the second column of the second column The second electrode, the first second electrode of the third column of the second electrode, and the first second electrode of the fourth column of the second electrode are connected to the same pin of the touch control wafer 300 via the second lead wire.

For the second electrode in a different portion, the second in the same position order The electrodes are connected to different pins of the touch control wafer 300 through the second lead wires, for example, the second electrode in the left half and the second electrode in the right half are connected to the touch control wafer 300 through the second lead wire Different pins.

For the first electrode of each column of the left half, the first electricity in the same position order The poles are connected to different pins of the touch control wafer 300 through the first lead wires; for each column first electrode of the right half, the first electrodes in the same position order are connected to different tubes of the touch control wafer 300 through the first lead wires foot.

Located in the left and right halves of the central axis along the entire area The second electrode in the symmetrical position is connected to the same pin of the touch control wafer 300 through the second lead wire. For example, the first column of the first column in the left half and the second column of the last half of the right half are symmetrical with respect to the central axis, the first electrode of the first column and the second electrode of the last column The first electrode is connected to the same pin of the touch control wafer 300.

The seventh embodiment of the present invention is a touch screen device, as shown in FIG. The sixth embodiment is different in that, for the first electrodes in different portions, the first electrodes in the same positional order are connected to the touch control wafer 300 (see FIG. 4, not shown in FIG. 14) through the first lead wires. The same pin. For example, a first electrode in the first row of the first half of the left half and a first electrode in the first row and the first column in the right half are connected to the same pin of the touch control wafer 300.

The eighth embodiment of the present invention is a touch screen device, as shown in FIG. The touch screen device further includes a touch control chip 300 (see FIG. 4, not shown in FIG. 15), and the touch control chip 300 is connected to both the first electrode and the second electrode of the plurality of sensing electrode units for performing Capacitive sensing obtains touch information.

When the plurality of sensing electrode units are mirror symmetrical, the two are mirror symmetrical rows The adjacent two sensing electrode units of the column are divided into a group, wherein m=22, n=10, and the figure is divided into four regions, wherein the region one is the first group, the region two is the second group, and the region two is the third group. And the fourth group is the fourth group, the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and the two columns of the second electrodes of each group of the sensing electrode units are located between the two columns of the first electrodes. And the second electrode in the same positional order is connected to the same pin of the touch control wafer 300 through the second lead wire, for example, the first electrode of the first column and the second electrode of the second column of the first column in the region 1. The first electrode is connected to the same pin of the touch control wafer 300.

For the two columns of the first electrode of each group of sensing electrode units, in the same position order The first electrode is connected to different pins of the touch control wafer 300 through the first lead wire, for example, the first electrode of the first electrode of the first column and the first electrode of the first electrode of the second column of the first row are connected to the touch Different pins of the wafer 300 are controlled.

For two adjacent sets of sensing electrode units, the two columns between the second electrodes are first The electrodes are adjacent, and for the adjacent two columns of first electrodes, the first electrodes in the same positional order are connected to the same pin of the touch control wafer 300 through the first lead wires, for example, the first column of the first column in the region one The first electrode of the first electrode of the first column and the first electrode of the second column of the second electrode are connected to the same pin of the touch control wafer 300.

For two adjacent sets of sensing electrode units, the second electrode in the different groups passes through the second The lead wires are connected to different pins of the touch control wafer 300, such as the second electrode in region one and the second electrode in region two are connected to different pins of the touch control wafer 300.

For two sets of sensing electrode units separated by a set of sensing electrode units, at The second electrode of the same positional order is connected to the same pin of the touch control wafer 300 through the second lead wire, for example, the first electrode of the first electrode of the second column in the region 1 and the second electrode of the second column of the third row of the region The first electrode is connected to the same pin of the touch control wafer 300.

The first electrode of the present embodiment and the 10 pins of the touch control chip 300 The second electrode is connected to the 22 pins of the touch control chip 300, and the plurality of pins of the touch control chip can be fully utilized, and the configuration is more flexible, and the touch position is more easily recognized, and the linearity and the touch precision are improved. The best touch.

The present invention provides a single-layer mutual-capacitive touch screen and a touch screen. The device and the electronic device are disposed on the two sides of the sensing electrode unit with the first lead wire of the first electrode and the second lead wire of the second electrode, so that the lead wires of the electrode are more properly distributed to the walking. The line space improves the accuracy of the single-layer mutual capacitance and improves the performance of the single-layer mutual capacitance.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this creation shall be included in the scope of this creation.

1‧‧‧Touch screen

10‧‧‧Sensor electrode unit

101, 102, 103, 104‧‧‧ mutual capacitance

B‧‧‧ binding zone

L1‧‧‧first lead wire

L2‧‧‧Second wiring

X1~Xm‧‧‧second electrode

Y1~Yn‧‧‧first electrode

Claims (33)

A single-layer mutual-capacitive touch screen, wherein the single-layer mutual-capacitive touch screen comprises: a plurality of sensing electrode units arranged in parallel, each sensing electrode unit comprising a plurality of first electrodes and a plurality of second electrodes, The plurality of first electrodes and the plurality of second electrodes are coupled to form a plurality of mutual capacitance sensing nodes; a plurality of first lead wires, each of the first lead wires is connected to a single first electrode; and a plurality of second wires Leading wires, each of the second lead wires is connected to a single second electrode; wherein the first lead wires and the second lead wires connected to the same sensing electrode unit are respectively located on opposite sides of the same sensing electrode unit; a sensing electrode unit, the plurality of first electrodes comprising at least a first type of electrode and a second type of electrode, wherein the number of mutual capacitance sensing nodes formed by each of the first type of electrodes and the second electrode is different from each of the second type of electrodes and the second The electrode forms a number of mutual capacitance sensing nodes, and the plurality of second electrodes includes at least a third type electrode and a fourth type electrode, wherein each third type electrode forms a mutual capacitance sensing node with the first electrode The number of mutual capacitance sensing nodes is formed with each of the fourth type electrodes and the first electrodes; the plurality of first electrodes are driving electrodes and the plurality of second electrodes are receiving electrodes, or the plurality of first electrodes are receiving electrodes And the plurality of second electrodes are driving electrodes. The single-layer mutual-capacitive touch screen of claim 1, wherein the first electrode is divided into a first type electrode and a second type electrode according to an area, and the second electrode is divided into a third type electrode and a third type Four types of electrodes, wherein the area of the first type electrode is J times the area of the second type electrode, and the area of the third type electrode is K times the area of the fourth type electrode, J, k are both positive numbers, and J is greater than K. The single-layer mutual-capacitive touch screen of claim 1, wherein each mutual capacitance sensing node is formed by cross-coupling the first electrode and the second electrode. The single-layer mutual-capacitive touch screen of claim 1, wherein the plurality of sensing electrode units are mirror-symmetrical. The single-layer mutual-capacitive touch screen of claim 1, wherein the number of mutual capacitance sensing nodes formed by each of the second electrode and the second electrode is different from the capacitance of each of the third electrodes and the first electrode. The number of sensing nodes, and the number of mutual capacitance sensing nodes formed by each of the second type of electrodes and the second electrode is different from the number of mutual capacitance sensing nodes formed by each of the fourth type of electrodes and the first electrodes. The single-layer mutual-capacitive touch screen of claim 5, wherein each of the first type of electrodes and the at least one second electrode form a mutual capacitance sensing node, each of the second type of electrodes and at least two third type of electrodes Forming a mutual capacitance sensing node and forming a mutual capacitance sensing node with at least one fourth type electrode, each third type electrode and at least two first electrodes forming a mutual capacitance sensing node, each of the fourth type electrodes and at least one first The electrodes form a mutual capacitance sensing node. The single-layer mutual-capacitive touch screen of claim 6, wherein each of the first type electrode and the third type electrode form a mutual capacitance sensing node, and each of the second type electrode and the second type electrode Forming two mutual capacitance sensing nodes and forming mutual capacitance sensing nodes with at least one fourth type electrode, each of the third type electrodes and the two first electrodes forming two mutual capacitance sensing nodes, each of the fourth type electrodes and one The second type of electrode forms a mutual capacitance sensing node. The single-layer mutual-capacitive touch screen of claim 7, wherein, for a sensing electrode unit, the first electrode includes two first-type electrodes, and the two first-type electrodes are located at the plurality of first electrodes The two types of electrodes are located between the two first type electrodes, the third type of electrodes and the fourth type of electrodes are alternately arranged, and the two ends of the plurality of second electrodes are respectively the third type of electrodes. The single-layer mutual-capacitive touch screen of claim 8, wherein each of the sensing electrode units is the same. The single-layer mutual-capacitive touch screen of claim 9, wherein each of the second electrode forms two mutual capacitance sensing nodes and forms a mutual capacitance with a fourth electrode. Induction node. The single-layer mutual-capacitive touch screen of claim 9, wherein each of the second type electrodes and the two third type electrodes form two mutual capacitance sensing nodes, and two second type electrodes form two Mutual capacitance sensing node. The single-layer mutual-capacitive touch screen of claim 1, wherein, for each electrode sensing unit, the plurality of first electrodes further comprise a fifth type of electrode, the plurality of second electrodes further comprising a sixth type of electrode Wherein, for a sensing electrode unit, the number of the first type of electrodes is the same as the number of the sixth type of electrodes, the number of the second type of electrodes is the same as the number of the fourth type of electrodes, the number of the fifth type of electrodes and the third type of electrodes The number is the same. The single-layer mutual-capacitive touch screen of claim 12, wherein for a sensing electrode unit, each of the first type of electrodes and the second electrode forms a mutual capacitance sensing node and each of the fourth type of electrodes and the The number of mutual capacitance forming nodes of one electrode is the same, the number of mutual capacitance sensing nodes formed by each of the second type electrode and the second electrode is the same as the number of mutual capacitance sensing nodes formed by each sixth type electrode and the first electrode, each The number of mutual capacitance forming nodes formed by the fifth type electrode and the second electrode is the same as the number of mutual capacitance sensing nodes formed by each of the third type electrodes and the first electrode. The single-layer mutual-capacitive touch screen of claim 13, wherein, for a sensing electrode unit, the arrangement of the plurality of first electrodes is the same as the arrangement of the plurality of second electrodes as a whole upside down And the plurality of first electrodes are respectively identical in one-to-one correspondence with the second electrodes that are vertically inverted. The single-layer mutual-capacitive touch screen according to claim 14, wherein the first type electrode and the second type The areas of the electrodes of the fifth type and the electrodes of the fifth type are different, and the areas of the third type electrode, the fourth type electrode and the sixth type electrode are different, and the area of the first type electrode is the same as the area of the fourth type electrode, and the area of the fifth type electrode The area of the second type of electrode is the same as the area of the third type of electrode. The single-layer mutual-capacitive touch screen of claim 1, wherein, for each of the sensing electrode units, the number of the plurality of first electrodes is m, and the number of the plurality of second electrodes is a, m is greater than A natural number equal to 5, a is a natural number greater than or equal to 4. A touch screen device, wherein the touch screen device comprises a single layer mutual capacitance touch screen as claimed in any one of claims 1 to 16. The touch screen device of claim 17, wherein the touch screen device further comprises a touch control chip, and the touch control chip is connected to the first electrode and the second electrode of the plurality of sensing electrode units, Used for capacitive sensing to obtain touch information. The touch screen device of claim 18, wherein, for each of the sensing electrode units, the plurality of first electrodes are respectively connected to different pins of the touch control chip through the first lead wires, the plurality of second The electrode is divided into a plurality of electrode groups, each electrode group includes at least one second electrode, and the second electrode in the same electrode group is non-adjacent, and the second electrode in the same electrode group is connected to the touch control through the second lead wire The same pin of the wafer, the second electrode of the different electrode group is connected to different pins of the touch control chip; or the plurality of first electrodes are divided into a plurality of electrode groups, each electrode group comprising at least one first electrode, And the first electrode in the same electrode group is non-adjacent, the first electrode in the same electrode group is connected to the same pin of the touch control chip through the first lead wire, and the first electrode in the different electrode group is connected to the touch control chip Different pins, the plurality of second electrodes are respectively separated by the second lead wires Connect to different pins of the touch control chip. The touch screen device of claim 19, wherein the plurality of first electrodes are arranged in a row, the plurality of second electrodes are arranged in a row, and for each column of the second electrode in each of the sensing electrode units, Each of the second electrodes in the same positional order is connected to the same pin of a touch control wafer via a second lead wire. The touch screen device of claim 19, wherein, for each column of the first electrodes, the first electrodes in the same positional order are connected to different pins of the touch control wafer through the first lead wires. The touch screen device of claim 18, wherein when the plurality of sensing electrode units are mirror-symmetrical, the adjacent two sensing electrode units arranged in mirror symmetry are divided into a group, the plurality of An electrode is arranged in a row, the plurality of second electrodes are arranged in a row, two columns of second electrodes of each group of sensing electrode units are located between the two columns of first electrodes, and the second electrodes in the same position order pass the second The lead wires are connected to the same pin of the touch control chip. The touch screen device of claim 22, wherein, for each of the two columns of first electrodes of each set of sensing electrode units, the first electrodes in the same positional order are connected to different pins of the touch control wafer through the first lead wires . The touch screen device of claim 23, wherein, for two adjacent sets of sensing electrode units, two columns of first electrodes between the second electrodes are adjacent, and for the adjacent two columns of first electrodes, The first electrode in the same positional order is connected to the same pin of the touch control wafer by the first lead wire. The touch screen device of claim 24, wherein for two adjacent sets of sensing electrode units, the second one of the different groups is connected to a different pin of the touch control chip by the second lead wire. The touch screen device of claim 25, wherein, for two sets of sensing electrode units spaced apart by a set of sensing electrode units, the second electrode in the same positional order is connected to the touch control wafer via the second lead wire The same pin. The touch screen device of claim 24, wherein the opposite side edges of the plurality of sensing electrode units are two columns of first electrodes, wherein, for the two columns of first electrodes, the first position in the same position order The electrodes are connected to the same pin of the touch control wafer by a first lead wire. The touch screen device of claim 24, wherein the opposite side edges of the plurality of sensing electrode units are two columns of first electrodes, wherein, for the two columns of first electrodes, the first position in the same position order The electrodes are connected to different pins of the touch control wafer by a first lead wire. The touch screen device of claim 23, wherein the plurality of sensing electrode units are divided into a left half and a right half by a region, the left half comprising a plurality of sensing electrode units, the right half A plurality of sensing electrode units are included, and the number of sensing electrode units included in each of the left half and the right half is the same, wherein: for each column of the second electrode in the left half, the second electrode in the same position order passes through The two lead wires are connected to the same pin of the touch control chip; for each column of the second electrode in the right half, the second electrode in the same position order is connected to the same pin of the touch control chip through the second lead wire; For the second electrode in the different portions, the second electrode in the same positional order is connected to the different pins of the touch control wafer by the second lead wire. The touch screen device of claim 29, wherein, for each column of the first electrode of the left half, the first electrodes in the same positional order are connected to different pins of the touch control wafer through the first lead wires; The first electrodes of each column of the right half, the first electrodes in the same positional order are connected to different pins of the touch control wafer by the first lead wires. The touch screen device of claim 30, wherein, for the first electrodes in the different portions, the first electrodes in the same positional order are connected to the same pin of the touch control wafer by the first lead wires. The touch screen device of claim 30, wherein the second electrode located in a symmetrical position along the central axis of the integral region in the left half and the right half is connected to the touch control chip through the second lead wire One pin. An electronic device, wherein the electronic device includes the touch screen device of any one of claims 17 to 32.