CN105022534A

CN105022534A - Single-layer mutual-capacitor touch screen, touch screen device and electronic apparatus

Info

Publication number: CN105022534A
Application number: CN201410169823.7A
Authority: CN
Inventors: 侯卫京; 刘辉; 陈超; 欧阳广
Original assignee: FocalTech Systems Ltd
Current assignee: FocalTech Electronics Shenzhen Co Ltd
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2015-11-04
Anticipated expiration: 2034-04-24
Also published as: TW201541323A; TWI541706B; CN105022534B

Abstract

The invention relates to the technical field of electronic apparatuses and discloses a single-layer mutual-capacitor touch screen, a touch screen device and an electronic apparatus. The single-layer mutual-capacitor touch screen comprises: a plurality of induction electrode units arranged in parallel, wherein each induction electrode unit comprises a plurality of first electrodes and a plurality of second electrodes, and the first electrodes and the second electrodes are coupled to form a plurality of mutual-capacitor induction nodes; and a plurality of first lead wires and a plurality of second lead wires, wherein the first lead wire and the second lead wire connected with the same induction electrode unit are positioned on two opposite sides of the same induction electrode unit respectively. The first electrodes are driving electrodes and the second electrodes are receiving electrodes; or, the first electrodes are the receiving electrodes and the second electrodes are the driving electrodes. Compared to the prior art, the lead wires of the electrodes are more reasonably distributed to routing space, so that the precision and performance of a single-layer mutual-capacitor are improved.

Description

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

Technical Field

The invention relates to the technical field of electronic devices, in particular to a single-layer mutual capacitance touch screen, touch screen equipment with the single-layer mutual capacitance touch screen and an electronic device.

Background

With the continuous development of touch screens, capacitive touch screens are more and more widely applied to terminal devices, and in the existing capacitive touch screen devices, multi-point touch of the touch screen devices can be realized through a single-layer Indium Tin Oxide (ITO) mutual capacitance arranged on a touch screen body. Referring to fig. 1, a layout pattern of mutual capacitance sensing nodes on a single layer in a touch screen device is shown, where each column of mutual capacitances includes a first electrode (e.g., X1 to Xm shown in fig. 1, where m is a natural number greater than 1) and a plurality of second electrodes (e.g., Y1 to Ym shown in fig. 1), and one first electrode and one second electrode form a mutual capacitance, and each of the first electrode and the second electrode needs to be connected with a lead wire separately.

Disclosure of Invention

The invention aims to provide a single-layer mutual capacitance touch screen, and aims to solve the problem of unbalanced wiring on two sides of each row of mutual capacitance of the touch screen in the prior art.

An embodiment of the present invention provides a single-layer mutual capacitance touch screen, including:

the capacitive touch sensing circuit comprises a plurality of sensing electrode units arranged in parallel, wherein each sensing electrode unit comprises a plurality of first electrodes and a plurality of second electrodes, and the plurality of first electrodes and the plurality of second electrodes are used for being coupled to form a plurality of mutual capacitance sensing nodes;

a plurality of first lead lines, each of which is connected to a separate first electrode; and

a plurality of second lead lines, each of which is connected to a separate second electrode;

the first lead wire and the second lead wire connected with the same induction electrode unit are respectively positioned at two opposite sides of the same induction electrode unit;

for an induction electrode unit, the plurality of first electrodes at least comprise first electrodes and second electrodes, the number of mutual capacitance induction nodes formed by each first electrode and each second electrode is different from the number of mutual capacitance induction nodes formed by each second electrode and each second electrode, the plurality of second electrodes at least comprise third electrodes and fourth electrodes, wherein the number of mutual capacitance induction nodes formed by each third electrode and each first electrode is different from the number of mutual capacitance induction nodes formed by each fourth electrode and each first 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.

Another embodiment of the present invention further includes a touch screen device, where the touch screen device includes the single-layer mutual capacitance touch screen.

Another embodiment of the present invention further includes an electronic device, which includes the touch screen apparatus described above.

Compared with the prior art, the first lead wire of the first electrode and the second lead wire of the second electrode are arranged on the two sides of the sensing electrode unit, so that the lead wires of the electrodes are more reasonably distributed to a wiring space, the precision of the single-layer mutual capacitance is improved, and meanwhile the performance of the single-layer mutual capacitance is improved.

Drawings

FIG. 1 is a schematic structural diagram of a single-layer mutual capacitance touch screen in the prior art;

FIG. 2 is a schematic structural diagram of a single-layer mutual capacitance touch screen according to a first embodiment of the present invention;

FIG. 3 is a schematic diagram of a cross-coupling structure of a first electrode and a second electrode in a single-layer mutual capacitance touch screen according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a connection structure between a touch control chip and a first electrode and a second electrode in a single-layer mutual capacitance touch screen according to an embodiment of the present invention;

FIG. 5a is a schematic structural diagram of a first implementation of a first embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 5b is a structural diagram of a second implementation of the first embodiment of the single-layer mutual capacitance touch screen according to the present invention;

FIG. 5c is a schematic structural diagram of a third implementation of the first embodiment of the single-layer mutual capacitance touch screen according to the present invention;

FIG. 5d is a schematic structural diagram of a fourth implementation of the first embodiment of the single-layer mutual capacitance touch screen according to the present invention;

FIG. 5e is a schematic structural diagram of a fifth implementation of the first embodiment of the single-layer mutual capacitance touch screen according to the present invention;

FIG. 5f is a schematic structural diagram of a sixth implementation of the first embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 6 is a structural diagram of a single-layer mutual capacitance touch screen according to a second embodiment of the present invention;

FIG. 7a is a schematic structural diagram of a first implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 7b is a structural diagram of a second implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the invention;

FIG. 7c is a schematic structural diagram of a third implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 7d is a schematic structural diagram of a fourth implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 7e is a schematic structural diagram of a fifth implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 7f is a schematic structural diagram of a sixth implementation of a second embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 8 is a schematic structural diagram of a single-layer mutual capacitance touch screen according to a third embodiment of the present invention;

FIG. 9a is a schematic structural diagram of a first implementation of a third embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 9b is a structural diagram of a second implementation of a third embodiment of a single-layer mutual capacitance touch screen according to the invention;

FIG. 9c is a schematic structural diagram of a third implementation of a third embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 9d is a schematic structural diagram of a fourth implementation of a third embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 9e is a schematic structural diagram of a fifth implementation manner of a third embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 9f is a schematic structural diagram of a sixth implementation of a third embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 10 is a schematic structural diagram of a fourth embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 11a is a schematic structural diagram of a first implementation manner of a fourth embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 11b is a structural diagram of a second implementation of a fourth embodiment of a single-layer mutual capacitance touch screen according to the invention;

FIG. 11c is a schematic structural diagram of a third implementation of a fourth embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 11d is a schematic structural diagram of a fourth implementation of a fourth embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 11e is a schematic structural diagram of a fifth implementation manner of a fourth embodiment of a single-layer mutual capacitance touch screen according to the present invention;

FIG. 11f is a schematic structural diagram of a sixth implementation manner of the fourth embodiment of the single-layer mutual capacitance touch screen according to the present invention.

Fig. 12 is a schematic structural diagram of a touch screen device according to a fifth embodiment of the present invention;

fig. 13 is a schematic structural diagram of a touch screen device according to a sixth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a touch screen device according to a seventh 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.

Detailed Description

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

The following describes the implementation of the present invention in detail with reference to specific embodiments.

A first embodiment of the present invention provides a single-layer mutual capacitance touch panel 1, please refer to fig. 2, which includes:

a plurality of sensing electrode units 10 arranged in parallel, each sensing electrode unit 10 including a plurality of first electrodes (electrodes respectively shown as Y1 to Yn in fig. 2) and a plurality of second electrodes (electrodes respectively shown as X1 to Xm in fig. 2) 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, m is a natural number greater than or equal to 5, and a is a natural number greater than or equal to 4;

a plurality of first lead lines L1, each first lead line L1 being connected to a separate first electrode; and

a plurality of second lead lines L2, each of the second lead lines L2 being connected to a separate second electrode.

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

Specifically, a plurality of the sensing electrode units 10 arranged together are disposed on the touch screen 1, each first electrode and each second electrode in each sensing electrode unit 10 are correspondingly connected to a different lead line L1, L2, a wiring area (not labeled) is formed between two adjacent sensing electrode units 10, for example, the second electrodes of two sensing electrode units 10 are adjacent, each second electrode in two columns of second electrodes is connected to a binding area B from the wiring area through a different lead line, the binding area B is sequentially provided with connection points connected to the lead lines, the lead lines are not crossed, the wiring modes of the lead lines can be various, as long as the lead lines are not crossed, and a preferred wiring mode is as follows: the lead wire of each electrode comprises a first lead wire section and a second lead wire section, the first lead wire section and the second lead wire section are mutually perpendicular and connected, the first lead wire section is connected with the electrode and parallel to the X-axis direction, and the second lead wire section is connected with a connection point in the binding area and parallel to the Y-axis direction.

For a sensing electrode unit, the plurality of first electrodes at least include first type electrodes and second type electrodes, the number of mutual capacitance sensing nodes formed by each first type electrode and each second type electrode is different from the number of mutual capacitance sensing nodes formed by each second type electrode and each second type electrode, the plurality of second electrodes at least include third type electrodes and fourth type electrodes, wherein the number of mutual capacitance sensing nodes formed by each third type electrode and each first type electrode is different from the number of mutual capacitance sensing nodes formed by each fourth type electrode and each first type electrode, specifically, as shown in fig. 2, the first electrodes Y1, Y3 to Yn-1 in each row of first electrodes belong to the first type electrodes, the second electrodes Y2, Y4 to Yn in each row of first electrodes belong to the second type electrodes, the number of mutual capacitance sensing nodes formed by each first type electrode and each second type electrode is 1, for example, the first electrodes Y1 in the first electrodes and the second electrodes form 1 mutual capacitance 101, the number of mutual capacitance sensing nodes formed by each second type electrode and the second electrode is 3, for example, the second electrode Y2 in the first electrode and the second electrode form 3 mutual capacitances 102, 103 and 104; the first electrode X1 in each column of second electrodes belongs to a third type of electrode, the second electrode X2 in each column of second electrodes belongs to a fourth type of electrode, and the number of mutual capacitance sensing nodes formed by each third type of electrode and the first electrode is 2, for example, the first electrode X1 in the second electrodes forms 2 mutual capacitances 101 and 102 with the first electrode, and the number of mutual capacitance sensing nodes formed by each fourth type of electrode and the first electrode is 1, for example, the second electrode X2 in the second electrodes forms 1 mutual capacitance 103 with the first electrode; it should be noted that, in fig. 2, the numbers Y1, Y2 to Yn in each column of the first electrodes are not divided according to the first type of electrodes and the second type of electrodes, for example, the numbers in the first column of the first electrodes are only Y1 and Y2, the first electrode with the number Y1 is not represented, and the first electrode with the number Y2 is not represented.

As shown in fig. 4, the driving electrode is connected to a touch control chip 300 and is configured to output a signal to the touch control chip 300, and the receiving electrode is connected to the touch control chip 300 and is configured to receive a signal output by the touch control chip 300.

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

Specifically, as shown in fig. 2, the number of mutual capacitance sensing nodes formed by the second electrode Y2 in the first electrode and the second electrode is 3, the number of mutual capacitance sensing nodes formed by the first electrode X1 in the second electrode and the first electrode is 2, and the number of mutual capacitance sensing nodes formed by the second electrode X2 in the second electrode and the first electrode is 1.

Preferably, each first-type electrode and at least one second-type electrode form a mutual capacitance sensing node, each second-type electrode and at least two third-type electrodes form a mutual capacitance sensing node, each second-type electrode and at least one fourth-type electrode form a mutual capacitance sensing node, each third-type electrode and at least two first electrodes form a mutual capacitance sensing node, and each fourth-type electrode and at least one first electrode form a mutual capacitance sensing node.

Preferably, each first-type electrode and one third-type electrode form a mutual capacitance sensing node, each second-type electrode and two third-type electrodes form two mutual capacitance sensing nodes and at least one fourth-type electrode form a mutual capacitance sensing node, each third-type electrode and two first electrodes form two mutual capacitance sensing nodes, and each fourth-type electrode and one second-type electrode form a mutual capacitance sensing node.

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

Preferably, the first electrodes are divided into a first type of electrode and a second type of electrode, the second electrodes are divided into a third type of electrode and a fourth type of electrode according to the difference of the areas, wherein the area of the second type of electrode is J times the area of the first type of electrode, the area of the third type of electrode is K times the area of the fourth type of electrode, J and K are positive numbers, J is greater than K, J equals 3, and K equals 2 in the present embodiment.

Preferably, in this embodiment, for an induction electrode unit, the first electrodes include two first-type electrodes, the two first-type electrodes are located at two ends of the plurality of first electrodes, the second-type electrode is located between the two first-type electrodes, the third-type electrodes and the fourth-type electrodes are alternately arranged at intervals, and two ends of the plurality of second electrodes are respectively third-type electrodes.

Preferably, each mutual capacitance sensing node is formed by cross-coupling a first electrode and a second electrode, and in particular, referring to fig. 3, a mutual capacitance sensing node is formed by cross-coupling a first electrode 200 and a second electrode 100.

Preferably, the sensing electrode units are in mirror symmetry with each other, and as shown in fig. 2, the sensing electrode units in the first row are in mirror symmetry with the sensing electrode units in the second row.

Preferably, each of the sensing electrode units is identical.

Preferably, each second-type electrode and two third-type electrodes form two mutual capacitance sensing nodes, and each second-type electrode and one fourth-type electrode form one mutual capacitance sensing node.

The embodiment of the invention also provides touch screen equipment, which comprises the single-layer mutual capacitance touch screen 1.

The touch screen device further includes the touch control chip 300, please refer to fig. 4, where the touch control chip 300 is connected to both the first electrode and the second electrode of the plurality of sensing electrode units 10, and is configured to perform capacitance sensing to obtain touch information.

The first embodiment of the connection between the touch control chip 300 and the plurality of sensing electrode units 10 is as follows: the plurality of first electrodes are respectively connected to different pins of the touch control chip 300 through a plurality of first lead lines L1, the plurality of second electrodes are divided into a plurality of electrode groups, each electrode group includes at least one second electrode, the second electrodes in the same electrode group are not adjacent, the second electrodes in the same electrode group are connected to the same pin of the touch control chip 300 through a plurality of second lead lines L2, and the second electrodes in different electrode groups are connected to different pins of the touch control chip 300.

The second embodiment of the connection between the touch control chip 300 and each sensing electrode unit 10 is as follows: the plurality of first electrodes are divided into a plurality of electrode groups, each electrode group includes at least one first electrode, the first electrodes in the same electrode group are not adjacent, the first electrodes in the same electrode group are connected to the same pin of the touch control chip 300 through a plurality of first lead lines L1, the first electrodes in different electrode groups are connected to different pins of the touch control chip 300, and the plurality of second electrodes are respectively connected to different pins of the touch control chip 300 through a plurality of second lead lines L2.

The second embodiment is described below with reference to fig. 2, wherein the plurality of first electrodes are arranged in columns, the plurality of second electrodes are arranged in columns, the electrodes X1 to Xm in the second electrodes in each column of each sensing electrode unit are connected to different pins of the touch control chip 300, each second electrode in the same positional order is connected to the same pin of a touch control chip 300 through a second lead line L2, the electrodes in each column of the first electrodes are divided into two electrode groups, wherein the electrodes in the odd-numbered rows in the first electrodes in each column are divided into one electrode group, the electrodes in the even-numbered rows in the first electrodes in each column are divided into one electrode group, for example, the electrode labeled Y1 in the first column is one electrode group, the electrode labeled Y2 is another electrode group, the electrodes labeled Y3, Y4 to Yn in other columns of the electrodes are all different electrode groups, the first electrode in the same electrode group is connected to the same pin of the touch control chip 300 through the first lead line L1, and the first electrodes in different electrode groups are connected to different pins of the touch control chip 300.

In this embodiment, the first electrodes in the single-layer mutual capacitance touch screen are divided into n electrode groups, and each row of the first electrodes is divided into two electrode groupsTherefore, the number of the rows of the sensing electrode units is n/2, where n is a positive multiple of 2 or 2, since there are m electrodes in each row of the second electrodes in each sensing electrode unit 10, the total number of the second electrodes is m × n/2, and each second electrode has one second connection line L2 to the binding region B, so that there are m × n/2 second connection lines L2; in order to form mutual capacitance sensing nodes corresponding to the first electrodes and the second electrodes in each sensing electrode unit 10 and ensure the symmetry of the pattern, the number a of the first electrodes in each row is (m +3)/2, the total number of the first electrodes is (m +3) × n/4, and each first electrode has one first lead line L1, so that there are (m +3) × n/4 first lead lines L1. Therefore, it can be easily understood that the total number of lead wires required is [ (m.times.n/2) + (m + 3). times.n/4%](mn + n)3/4, where m is 2k₁+3，a＝k₁+3，k₁Is a natural number of 1 or more.

Preferably, when two second electrodes, which are farthest from the bonding region in the Y-axis direction, of the two adjacent columns of second electrodes of the two adjacent columns of sensing electrode units are connected to the same pin of the touch control chip 300, the second outgoing lines L2 of the two second electrodes are connected in common in the routing region.

The following specifically describes embodiments in this example by way of example:

in a first embodiment, please refer to fig. 5a, where m is 5 and n is 4, that is, the number of the second electrodes in each row of each sensing electrode unit 10 is 5, and there are 2 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 10, each second electrode has one second connection line L2, and there are 10 second connection lines L2; each sensing electrode unit 10 has a total number of first electrodes of (m +3) × n/4 ═ 8 if the number a of first electrodes in each row is (m +3)/2 ═ 4, and each first electrode has one first connection line L1, so that (m × n + n) × 3/4 ═ 8 first connection lines L1 are provided in total. Therefore, it can be easily found that the required number of leads is [ ((m × n × X/2) + (m +3) × n/4] ═ mn + n)3/4 ═ 18 in practical applications, the lowermost adjacent X5 electrode leads can be merged, so that the total number of leads is 18-1 ═ 17, and (3m +1) × n/4 ═ 3 × 5) × 4/4 ═ 16 mutual capacitance sensing nodes are in total.

In a second embodiment, please refer to fig. 5b, where m is 5 and n is 8, that is, the number of the second electrodes in each row of each sensing electrode unit 10 is 5, there are 4 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 20, each second electrode has one second connection line L2, and there are 20 second connection lines L2; each sensing electrode unit 10 has a total number of first electrodes of (m +3) × n/4 ═ 16, where a number a of first electrodes in each row is (m +3)/2 ═ 4, and each first electrode has one first lead line L1, so that there are 16 first lead lines L1 in total. Therefore, it can be easily found that the required number of leads is [ (m × n/2) + (m +3) × n/4] - (mn + n)3/4 ═ 36. In practice, the X5 electrode leads adjacent to the lowest end may be combined, so that the total number of leads is 36-2 to 34, and there are (3m +1) × n/4 to 32 mutual capacitance sensing nodes.

In a third embodiment, please refer to fig. 5c, where m is 7 and n is 4, that is, the number of the second electrodes in each row of each sensing electrode unit 10 is 7, and there are 2 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 14, each second electrode has one second connection line L2, and there are 14 second connection lines L2; each sensing electrode unit 10 has a total number of first electrodes of (m +3) × n/4 ═ 10, where a number a of first electrodes in each row is (m +3)/2 ═ 5, and each first electrode has one first lead line L1, so that there are 10 first lead lines L1 in total. Therefore, it can be easily found that the required number of leads is [ (m × n/2) + (m +3) × n/4] ═ 24 (mn + n) 3/4. In practice, the lowermost adjacent X7 electrode leads may be merged such that the total number of leads is 24-1 to 23; and there are (3m +1) × n/4 ═ 22 mutual capacitance sensing nodes.

In a fourth embodiment, please refer to fig. 5d, where m is 7 and n is 8, that is, the number of the second electrodes in each row of each sensing electrode unit 10 is 7, there are 4 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 28, each second electrode has one second connection line L2, and there are 28 connection lines mxn/2; each sensing electrode unit 10 has a total number of first electrodes of (m +3) × n/4 ═ 20, where a number a of first electrodes in each row is (m +3)/2 ═ 5, and each first electrode has one first lead line L1, so that there are 20 first lead lines L1 in total. Therefore, it can be easily found that the required number of leads is [ (m × n/2) + (m +3) × n/4] - (mn + n)3/4 ═ 48. In practice, the lowest adjacent X7 electrode leads may be combined so that the total lead count is 48-2 to 46; and there are (3m +1) × n/4 ═ 44 mutual capacitance sensing nodes.

In a fifth embodiment, please refer to fig. 5e, where m is 9 and n is 4, that is, the number of the second electrodes in each row of each sensing electrode unit 10 is 9, there are 2 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 18, each second electrode has one second connection line L2, and there are 18 second connection lines L2; each sensing electrode unit 10 has a total number of first electrodes of (m +3) × n/4 ═ 12, where a number a of first electrodes in each row is (m +3)/2 ═ 6, and each first electrode has one first lead line L1, so that there are 12 first lead lines L1 in total. Therefore, it can be easily found that the required number of leads is [ (m × n/2) + (m +3) × n/4] ═ 30 (mn + n) 3/4. Therefore, the total number of leads is (mn + n)3/4 ═ 30, and in practical applications, the X9 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads is 30-1 ═ 29; and there are (3m +1) × n/4 ═ 28 mutual capacitance sensing nodes.

In a sixth embodiment, please refer to fig. 5f, where m is 9 and n is 8, that is, the number of the second electrodes in each row of the sensing electrode units 10 is 9, there are 4 rows of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 36, each second electrode has one second connection line L2 to the bonding area B, and there are 36 connection lines mxn/2; in each row of the sensing electrode units 10, the number a of the first electrodes in each row is equal to (m +3)/2 is equal to 6, and the total number of the first electrodes is equal to (m +3) × n/4 is equal to 24, so that there are 24 lead wires in total (m +3) × n/4. Therefore, it can be easily found that the required number of leads is [ (m × n/2) + (m +3) × n/4] ═ 60 (mn + n) 3/4. Therefore, the total number of leads is (mn + n)3/4 ═ 60, and in practical applications, the X9 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads is 60-2 ═ 58; and there are (3m +1) × n/4 ═ 56 mutual capacitance sensing nodes, including mutual capacitance sensing node 701, mutual capacitance sensing node 714, mutual capacitance sensing node 715, mutual capacitance sensing node 728, mutual capacitance sensing node 729, mutual capacitance sensing node 742, mutual capacitance sensing node 743, and mutual capacitance sensing node 756, etc., as in fig. 6 f.

In the embodiment of the invention, the first electrode and the second electrode are both divided into single node wires, so that the crosstalk with the whole electrode is small, and the touch precision is high; moreover, no isolation channel is required between the first electrode and the second electrode; the first electrode or the second electrode is not provided with corners, so that the symmetry is better; finally, no outgoing line passes through the space between the first electrode and the second electrode, so that the coupling capacitance is not influenced;

a single-layer mutual capacitance touch panel 2 according to a second embodiment of the present invention is shown in fig. 6, which includes a plurality of sensing electrode units 20 arranged in parallel, each sensing electrode unit 20 includes a plurality of first electrodes (e.g., electrodes Y1 to Yn shown in fig. 6) and a plurality of second electrodes (e.g., electrodes X1 to Xm shown in fig. 6), for each sensing electrode unit 20, the plurality of first electrodes at least includes first type electrodes and second type electrodes, the number of mutual capacitance sensing nodes formed by each first type electrode and each second type electrode is different from the number of mutual capacitance sensing nodes formed by each second type electrode and each second type electrode, the number of mutual capacitance sensing nodes formed by each first type electrode (e.g., first electrodes Y1 and Y3 to Yn-1 in each row of first electrodes) and the second electrodes is 1, each second type electrode (e.g., the number of the mutual capacitance sensing nodes formed by the second electrodes Y2, Y4 to Yn) in each row of the first electrodes and the second electrodes is 2, the plurality of second electrodes at least comprises a third type of electrodes and a fourth type of electrodes, wherein the number of the mutual capacitance sensing nodes formed by each third type of electrodes and the first electrodes is different from the number of the mutual capacitance sensing nodes formed by each fourth type of electrodes and the first electrodes, the number of the mutual capacitance sensing nodes formed by each third type of electrodes (the first electrode X1 in each row of the second electrodes belongs to the third type of electrodes) and the first electrodes is 2, the number of the mutual capacitance sensing nodes formed by each fourth type of electrodes (the second electrode X2 in each row of the second electrodes) and the first electrodes is 1, specifically, as shown in fig. 4, the first electrode Y1 and the second electrode form 1 mutual capacitance sensing node 201, and the second electrode Y2 and the second electrode in the first electrodes form 4 mutual capacitance sensing nodes 202, 203. 204, and 205, a first one of the second electrodes X1 forms 2 mutual capacitance sensing nodes 201 and 202 with the first electrode, and a second one of the second electrodes X2 forms 1 mutual capacitance sensing node 203 with the first electrode.

Specifically, as shown in fig. 6, the number of mutual capacitance sensing nodes formed by the second electrode Y2 in the first electrode and the second electrode is 4, the number of mutual capacitance sensing nodes formed by the first electrode X1 in the second electrode and the first electrode is 2, and the number of mutual capacitance sensing nodes formed by the second electrode X2 in the second electrode and the first electrode is 1.

Specifically, as shown in fig. 6, a first electrode Y1 of the first electrodes forms a mutual capacitance sensing node with a first electrode X1 of the second electrodes, a second electrode Y2 of the first electrodes forms a mutual capacitance sensing node with two third-type electrodes (a first electrode X1 and a fourth electrode X4 of the second electrodes) and with two fourth-type electrodes (a second electrode X2 of the second electrodes and a third electrode X3 of the second electrodes), a first electrode X1 of the second electrodes forms a mutual capacitance sensing node with two first electrodes (a first electrode Y1 of the first electrodes and a second electrode Y2 of the first electrodes), and a second electrode X2 of the second electrodes forms a mutual capacitance sensing node with one first electrode.

Preferably, the first electrodes are divided into a first type of electrode and a second type of electrode, the second electrodes are divided into a third type of electrode and a fourth type of electrode according to the difference of the areas, wherein the area of the second type of electrode is J times the area of the first type of electrode, the area of the third type of electrode is K times the area of the fourth type of electrode, J and K are positive numbers, J is greater than K, J is 4, and K is 2 in the present embodiment.

Preferably, in this embodiment, for a row of the sensing electrode units, the first electrodes include two first-type electrodes, the two first-type electrodes are located at two ends of the plurality of first electrodes, the second-type electrode is located between the two first-type electrodes, the third-type electrodes and the two fourth-type electrodes are alternately arranged at intervals, and two ends of the plurality of second electrodes are respectively third-type electrodes.

Preferably, the sensing electrode units 20 are mirror-symmetrical with each other, and as shown in fig. 4, the sensing electrode units in the first row are mirror-symmetrical with the sensing electrode units in the second row.

Preferably, each of the sensing electrode units is identical.

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

The embodiment of the invention also provides touch screen equipment, which comprises the single-layer mutual capacitance touch screen.

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 sensing electrode unit 20, and is used for performing capacitance sensing to obtain touch information.

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

In this embodiment, the first electrodes in the single-layer mutual capacitance touch screen are divided into n electrode groups, and the first electrodes in each column are divided into two electrode groups, so that the touch sense is achievedSince each row of the second electrodes in each sensing electrode unit 20 has m second electrodes, the total number of the second electrodes is m × n/2, and each second electrode has one lead wire to the binding region, there are m × n/2 second lead wires L4; in order to ensure that the second electrodes and the first electrodes in each sensing electrode unit 20 form mutual capacitance sensing nodes corresponding to each other, and the symmetry of the graph is ensured, therefore, the number a of the first electrodes in each row in each sensing electrode unit 20 is (m +5)/3, the total number of the first electrodes is (m +5) × n/6, each first electrode has one first lead line L3, and therefore, there are (m +5) × n/6 first lead lines L3 in total. Therefore, it can be easily understood that the total number of lead wires required is (4m +5) × n/6, where m is 3k₃+4，a＝k₃+3，k₃Is a natural number of 1 or more.

in a first embodiment, please refer to fig. 7a, where m is 7 and n is 4, that is, the number of the second electrodes in each column of each sensing electrode unit 20 is 7, there are 2 columns of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 14, each second electrode has one second connection line L4, and there are 14 second connection lines L4; each sensing electrode unit 20 has a total number of first electrodes of (m +5) × n/6 ═ 8, where a number a of first electrodes in each row is (m +5)/3 ═ 4, and each first electrode has one first lead line L3, so that there are 8 first lead lines L3 in total. Therefore, it can be easily found that the required number of leads is 22 (4m +5) × n/6. In practice, the lowest adjacent X7 electrode leads may be combined so that the total number of leads 22-1 is 21; and there are (4m +2) × n/6 ═ 20 mutual capacitance sensing nodes.

In a second embodiment, please refer to fig. 7b, where m is 7 and n is 8, that is, the number of the second electrodes in each column of each sensing electrode unit 20 is 7, there are 4 columns of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 28, each second electrode has one second connection line L4, and there are 28 second connection lines L4; each sensing electrode unit 20 has a total number of first electrodes of (m +5) × n/6) × 16, where a number a of first electrodes in each row is (m +5)/3 ═ 4, and each first electrode has one first connection line L3, so that there are 16 first connection lines L3. Therefore, it can be easily found that the required number of leads is 44 (4m +5) × n/6. In practice, the lowest adjacent X7 electrode leads may be combined so that the total number of leads 44-2 is 42; in addition, the total number of the mutual capacitance sensing nodes is (4m +2) × n/6 ═ 40.

In a third embodiment, please refer to fig. 7c, where m is 10 and n is 4, that is, the number of the second electrodes in each column of each sensing electrode unit 20 is 10, there are 2 columns of sensing electrode units 20, so that the total number of the second electrodes is m × n/2 is 20, each second electrode has one second connection line L4, and there are 20 second connection lines L4; in each row of the sensing electrode units 20, the number a of the first electrodes in each row is (m +5)/3 is 5, the total number of the first electrodes is (m +5) × n/6 is 10, and each first electrode has one first connection line L3, so that (m +5) × n/6 is 10 first connection lines L3. Therefore, it can be easily understood that the total number of leads is (m n + n)3/4 ═ 5 × 4+4) × 3/4 ═ 30, and in practical applications, the X10 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads is 30-1 ═ 29; and there are (4m +2) × n/6 ═ 28 mutual capacitance sensing nodes.

In a fourth embodiment, please refer to fig. 7d, where m is 10 and n is 8, that is, the number of the second electrodes in each column of each sensing electrode unit 20 is 10, there are 4 columns of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 40, each second electrode has one second connection line L4, and there are 40 second connection lines L4; each sensing electrode unit 20 has a total number of first electrodes of (m +5) × n/6) × 20, where a number a of first electrodes in each row is (m +5)/3 is 5, and each first electrode has one first lead line L3, so that there are 20 first lead lines L3. Therefore, it can be easily understood that the total number of leads is (m n + n)3/4 ═ 60 (5 × 4+4) × 3/4, and in practical applications, the X10 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads is 60-2 ═ 58; and there are (4m +2) × n/6 ═ 56 mutual capacitance sensing nodes.

In a fifth embodiment, please refer to fig. 7e, where m is 13 and n is 4, that is, the number of the second electrodes in each column of each sensing electrode unit 20 is 13, there are 2 columns of sensing electrode units, so that the total number of the second electrodes is mxn/2 is 26, each second electrode has one second connection line L4, and there are 26 second connection lines L4; each sensing electrode unit 20 has a total number of first electrodes of (m +5) × n/6 ═ 12 if the number a of first electrodes in each row is (m +5)/3 ═ 6, and each first electrode has one first lead line L3, so that there are 12 first lead lines L3 in total. Therefore, it can be easily understood that the total number of leads is (m n + n)3/4 ═ 5 × 4+4) × 3/4 ═ 38, and in practical applications, the X13 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads 38-1 is 37; and there are (4m +2) × n/6 ═ 36 mutual capacitance sensing nodes.

In a sixth embodiment, please refer to fig. 7f, where m is 13 and n is 8, that is, the number of the second electrodes in each row of each sensing electrode unit 20 is 13, and there are 4 rows of sensing electrode units, so that the total number of the second electrodes is m × n/2 is 52, each second electrode has one second connection line L4, and there are 52 second connection lines L4; the number a of the first electrodes in each row of the sensing electrode units 20 is (m +5)/3 is 6, the total number of the first electrodes is (m +5) × n/6 is 24, each of the first electrodes has one first lead line L3 to the bonding region, and thus, there are 24 first lead lines L3 in total. Therefore, it can be easily understood that the total number of leads is (m n + n)3/4 ═ 5 × 4 × 3/4 ═ 76, and in practical applications, the X12 electrode leads adjacent to the lowermost end may be combined, so that the total number of leads is 76-2 ═ 74; there are 72 mutual capacitance sensing nodes including mutual capacitance sensing node 901, mutual capacitance sensing node 918, mutual capacitance sensing node 919, mutual capacitance sensing node 936, mutual capacitance sensing node 937, mutual capacitance sensing node 954, mutual capacitance sensing node 955, and mutual capacitance sensing node 972 in fig. 10 f.

A single-layer mutual capacitance touch screen according to a third embodiment of the present invention, please refer to fig. 8, which includes:

a plurality of sensing electrode units 30 arranged in parallel, each sensing electrode unit 30 including a plurality of first electrodes (electrodes respectively Y1 to Yn shown in fig. 8) and a plurality of second electrodes (electrodes respectively X1 to Xm shown in fig. 8) 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 lines L5, each first lead line L5 being connected to a separate first electrode; and

a plurality of second lead lines L6, each of the second lead lines L6 being connected to a separate second electrode.

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

For a sensing electrode unit 30, the plurality of first electrodes at least include a first type of electrodes and a second type of electrodes, the number of mutual capacitance sensing nodes formed by each first type of electrodes and each second type of electrodes is different from the number of mutual capacitance sensing nodes formed by each second type of electrodes and each second type of electrodes, the plurality of second electrodes at least include a third type of electrodes and a fourth type of electrodes, wherein the number of mutual capacitance sensing nodes formed by each third type of electrodes and each first type of electrodes is different from the number of mutual capacitance sensing nodes formed by each fourth type of electrodes and each first type of electrodes, the plurality of first electrodes further include a fifth type of electrodes, the plurality of second electrodes further include a sixth type of electrodes, wherein, for a sensing electrode unit 30, the number of first type of electrodes is the same as the number of sixth type of electrodes, and the number of second type of electrodes is the same as the number of fourth type of electrodes, 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, the number of mutual capacitance sensing nodes formed by each first-type electrode (for example, the first electrode Y1 of the first column of first electrodes) and the second electrode is the same as the number of mutual capacitance sensing nodes formed by each fourth-type electrode (for example, the second electrode X1 of the first column of second electrodes) and the first electrode, and both are 1 mutual capacitance sensing node; the number of mutual capacitance sensing nodes formed by each second type electrode (for example, the first electrode Y2 of the first row of first electrodes) and the second electrode is the same as the number of mutual capacitance sensing nodes formed by each sixth type electrode (for example, the penultimate electrode Xm-1 of the first row of second electrodes) and the first electrode, and the number of mutual capacitance sensing nodes are 3; the number of mutual capacitance sensing nodes formed by each fifth type electrode (for example, the last electrode Y3 of the first row of first electrodes) and the second electrode is the same as the number of mutual capacitance sensing nodes formed by each third type electrode (for example, the first electrode X1 of the first row of second electrodes) and the first electrode, and the number of mutual capacitance sensing nodes are 2; .

Preferably, the arrangement mode of the plurality of first electrodes is the same as the arrangement mode of the plurality of second electrodes after being wholly inverted up and down, and the plurality of first electrodes are respectively in one-to-one correspondence with the second electrodes after being wholly inverted up and down.

Preferably, the first electrode, the second electrode and the fifth electrode have different areas, the third electrode, the fourth electrode and the sixth electrode have different areas, the area of the first electrode is the same as that of the fourth electrode, the area of the fifth electrode is the same as that of the third electrode, and the area of the second electrode is the same as that of the sixth electrode.

Specifically, in this embodiment, the area of the second type electrode is 3 times that of the first type electrode, the area of the fifth type electrode is 2 times that of the first type electrode, the area of the third type electrode is 2 times that of the fourth type electrode, and the area of the sixth type electrode is 3 times that of the fourth type electrode.

In each column of the first electrodes, the first electrode is a first kind of electrode, from the second first electrode to the a-th electrode₁All the first electrodes are the second type electrodes from the a₁The first electrodes and the fifth electrodes are alternately arranged from +1 first electrodes to a first electrode a, the a-th electrodes₁The +1 first electrodes are first electrodes, the a-th first electrodes are fifth electrodes, wherein a is 3k₂+4，a₁＝k₂+2，k₂Is a natural number greater than or equal to 1;

in each column of the second electrodes, from the first second electrode to the m-th electrode₁The third electrodes and the fourth electrodes are alternately arranged at intervals, the second electrodes positioned in the odd-numbered rows are the third electrodes, the second electrodes positioned in the even-numbered rows are the fourth electrodes, and the second electrodes are arranged from the m-th row₁The +1 second electrodes to the m-1 second electrodes are all electrodes of a sixth type, the m second electrodes are electrodes of a third type, and m is 3k₂+4，m₁＝2k₂+2，k₂Is a natural number greater than or equal to 1;

each first-type electrode and one second electrode form a mutual capacitance sensing node, each second-type electrode and three adjacent second electrodes form three mutual capacitance sensing nodes, each fifth-type electrode and two adjacent second electrodes form two mutual capacitance sensing nodes, each third-type electrode and two adjacent first electrodes form two mutual capacitance sensing nodes, each fourth-type electrode and one first electrode form a mutual capacitance sensing node, and each sixth-type electrode and three adjacent first electrodes form three mutual capacitance sensing nodes.

The touch screen device further includes a touch control chip 300 (see fig. 4, not shown in fig. 8), and the touch control chip 300 is connected to both the first electrode and the second electrode of the plurality of sensing electrode units 30, and is configured to perform capacitance sensing to obtain touch information.

Specifically, the plurality of first electrodes are arranged in a column, the plurality of second electrodes are arranged in a column, for each column of second electrodes in each sensing electrode unit 30, the electrodes X1 to Xm are connected to different pins of the touch control chip 300, and each second electrode in the same position order is connected to the same pin of a touch control chip 300 through a second lead line L6. The electrodes in the first electrodes in each column are divided into three electrode groups, wherein the electrodes at the 1 st, 4 th and 3j +1 st positions in the first electrodes in each column are divided into one electrode group, the electrodes at the 2 nd, 5 th and 3j +2 nd positions in the first electrodes in each column are divided into one electrode group, the electrodes at the 3 rd, 6 th and 3j +3 rd positions in the first electrodes in each column are divided into one electrode group, j is an integer greater than or equal to 0, for example, the electrode labeled Y1 in the first row is the first electrode set, the electrode labeled Y2 is the second electrode set, the electrode labeled Y3 is the third electrode set, the electrodes labeled Y4, Y5 to Yn in the other column electrodes all belong to different electrode groups, the first electrode in the same electrode group is connected to the same pin of the touch control chip 300 through the first lead line L5, and the first electrodes in different electrode groups are connected to different pins of the touch control chip 300.

In this embodiment, since the first electrodes in the single-layer mutual capacitance touch screen are divided into n electrode groups, and each column of the first electrodes is divided into three electrode groups, the number of columns of the sensing electrode units is n/3, where n is 3 or a positive multiple of 3, and since the number of the second electrodes in each column of the sensing electrode units 30 in each column is m, where m is 3k₃+4，k₃A natural number of 1 or more, the total number of the second electrodes is m × n/3, and each second electrode has one second lead line L6, so that m × n/3 second lead lines L6 are total; in order to form the mutual capacitance sensing nodes corresponding to the second electrodes and the first electrodes in each row of the sensing electrode units 30 and ensure the symmetry of the graph, each row of the sensing electrode unitsThe number a of the first electrodes in each row of the sensing electrode unit 30 is equal to m, the total number of the first electrodes is m × n/3, and each first electrode has one first lead line L5, so that there are m × n/3 first lead lines L5. Therefore, the required number of lead wires is [ m × n/3+ m × n/3 [ ]]2m × n/3. The second electrode and the first electrode in each row of sensing electrode units 30 form mutually corresponding mutual capacitance sensing nodes, and there are (2m-1) × n/3 capacitance nodes in total.

in a first embodiment, please refer to fig. 9a, where m is 7 and n is 6, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 7, and there are 2 rows of the sensing electrode units 30, so that the total number of the second electrodes is mxn/3 is 14, each second electrode has one second connection line L6, and there are 14 second connection lines L6; the number a of the first electrodes in each row of the sensing electrode units 30 is 7, the total number of the first electrodes is m × n/3 is 14, and each first electrode has one first lead line L5, so that m × n/3 is 14 first lead lines L5. Therefore, it can be easily found that the number of required lead wires is 2m × n/3 — 28. In practice, the lowermost adjacent X7 electrode leads may be merged such that the total number of leads is 28-1 to 27; and there are (2m-1) × n/3 ═ 26 mutual capacitance sensing nodes.

In a second embodiment, please refer to fig. 9b, where m is 7 and n is 12, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 7, there are 4 rows of the sensing electrode units 30, so that the total number of the second electrodes is mxn/3 is 28, each second electrode has one second connection line L6, and there are 28 second connection lines L6; the number a of the first electrodes in each row of the sensing electrode units 30 is equal to 7, the total number of the first electrodes is m × n/3 is equal to 28, and each first electrode has one first lead line L5, so that m × n/3 is equal to 28 first lead lines L5. Therefore, the required number of leads is 2m × n/3 — 56. In practice, the lowermost adjacent X7 electrode leads may 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.

In a third embodiment, please refer to fig. 9c, where m is 10 and n is 6, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 10, there are 2 rows of sensing electrode units 30, so that the total number of the second electrodes is m × n/3 is 20, each second electrode has one second connection line L6, and there are 20 second connection lines L6; each row of the sensing electrode units 30 has a total number of first electrodes, i.e., m is 10, m × n/3 is 20, and each first electrode has a second connection line L6, so that m × n/3 is 20 second connection lines L6. Therefore, it can be easily found that the required number of lead wires is 40, 2m × n/3. In practice, the lowermost adjacent X10 electrode leads may be combined such that the total number of leads is 40-1 to 39; and there are (2m-1) × n/3 ═ 38 mutual capacitance sensing nodes.

In a fourth embodiment, please refer to fig. 9d, where m is 10 and n is 12, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 10, there are 4 rows of the sensing electrode units 30, so that the total number of the second electrodes is m × n/3 is 40, each second electrode has one second connection line L6, and there are 40 second connection lines L6; the number a of the first electrodes in each row of the sensing electrode units 30 is equal to m and equal to 10, the total number of the first electrodes is m × n/3 and equal to 40, and each first electrode has one first connection line L5, so that m × n/3 and equal to 40 first connection lines L5 are total. Therefore, the required number of leads is 80 as large as 2m × n/3. In practice, the lowest adjacent X10 electrode leads may be combined such that the total number of leads 80-2 is 78; and there are (2m-1) × n/3 ═ 76 mutual capacitance sensing nodes.

In a fifth embodiment, please refer to fig. 9e, where m is 13 and n is 6, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 13, there are 2 rows of the sensing electrode units 30, so that the total number of the second electrodes is mxn/3 is 26, each second electrode has one second connection line L6, and there are 26 second connection lines L6; the number a of the first electrodes in each row of the sensing electrode units 30 is 13, the total number of the first electrodes is m × n/3 is 26, and each first electrode has one first lead line L5, so that m × n/3 is 26 first lead lines L5. Therefore, the required number of leads is 2m × n/3-52. In practice, the lowermost adjacent X13 electrode leads may be combined such that the total number of leads is 52-1 to 51; and there are (2m-1) × n/3 ═ 50 mutual capacitance sensing nodes.

In a sixth embodiment, please refer to fig. 9f, where m is 13 and n is 12, that is, the number of the second electrodes in each row of the sensing electrode units 30 is 13, there are 4 rows of the sensing electrode units 30, so that the total number of the second electrodes is mxn/3 is 52, each second electrode has one second connection line L6, and there are 52 second connection lines L6; the number a of the first electrodes in each row of the sensing electrode units 30 is 13, the total number of the first electrodes is m × n/3 is 52, and each first electrode has one first connection line L5, so that m × n/3 is 52 first connection lines L5. Therefore, the required number of leads is 2m × n/3 — 104. In practice, the lowest adjacent X13 electrode leads may be combined, so that the total number of leads is 104-2 to 102; in addition, there are 100 mutual capacitance sensing nodes in total, and the capacitance sensing nodes include 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, a mutual capacitance sensing node 876, a mutual capacitance sensing node 900, and the like in fig. 8 f.

Referring to fig. 10, a single-layer mutual capacitance touch screen according to a fourth embodiment of the present invention is different from the third embodiment in that: the area of the second type of electrode is 4 times that of the first type of electrode, the area of the fifth type of electrode is 2 times that of the first type of electrode, the area of the third type of electrode is 2 times that of the fourth type of electrode, and the area of the sixth type of electrode is 4 times that of the fourth type of electrode.

In each column of the first electrodes, the first electrode is a first kind of electrode, and the second first electrode is a second kind of electrode to the a-th electrode₂All the first electrodes are the second type electrodes from the a₂+1 first electrode to the a-th first electrode₂+3a₃One of the first electrodes is a fifth type electrode, and the other first electrodes are first type electrodes, wherein a is 4k₄+9，a₂＝k₄+3，1≤a₃≤k₄+2，k₄Is a natural number of 1 or more, a₃Are integers.

In each column of the second electrodes, from the first second electrode to the m-th electrode₃3m of the second electrode₄-2 second electrodes are of a third type and the remaining second electrodes are of a fourth type, from m₃The +1 to m-1 second electrodes are electrodes of a sixth kind, and the mth second electrode is an electrode of a fourth kind, wherein m is 4k₄+9，m₃＝3k₄+6，1≤m₄≤k₄+2，k₄Is a natural number of 1 or more, m₄Are integers.

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

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 both the first electrode and the second electrode of the plurality of sensing electrode units 40, and is configured to perform capacitance sensing to obtain touch information.

Specifically, the plurality of first electrodes are arranged in a column, the plurality of second electrodes are arranged in a column, for each column of second electrodes in each sensing electrode unit 40, the electrodes X1 to Xm are connected to different pins of the touch control chip 300, and each second electrode in the same position order is connected to the same pin of a touch control chip 300 through a second lead line L8. The electrodes in the first electrodes in each column are divided into four electrode groups, wherein the electrodes at the 1 st, 5 th and 4j +1 th positions in the first electrodes in each column are divided into one electrode group, the electrodes at the 2 nd, 6 th and 4j +2 th positions in the first electrodes in each column are divided into one electrode group, the electrodes at the 3 rd, 7 th and 4j +3 th positions in the first electrodes in each column are divided into one electrode group, the electrodes at the 4 th, 8 th and 4j +4 th positions in the first electrodes in each column are divided into one electrode group, j is an integer equal to or greater than 0, for example, the electrode labeled Y1 in the first column is the first electrode group, the electrode labeled Y2 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 columns are different electrode groups, the first electrode in the same electrode group is connected to the same pin of the touch control chip 300 through the first lead line L7, and the first electrodes in different electrode groups are connected to different pins of the touch control chip 300.

In this embodiment, the first electrodes in the single-layer mutual capacitance touch screen are divided into n electrode groups, and each column of the first electrodes is divided into four electrode groups, so the number of columns of the sensing electrode units 40 is n/4, where n is a positive multiple of 8 or 8, and since the number of second electrodes in each column of the sensing electrode units 40 is m, the total number of the second electrodes is m × n/4, and each second electrode has one second lead wire L8, so that m × n/4 second lead wires L8 are total; in order to enable the second electrodes and the first electrodes in each row of the sensing electrode units 40 to form mutually corresponding mutual capacitance sensing nodes and ensure the symmetry of the graph, the number a of the first electrodes in each row of the sensing electrode units 40 is equal to m, the total number of the first electrodes is m × n/4, each first electrode has one first lead line L7, and therefore, m × n/4 first lead lines L7 are provided. Therefore, the required number of lead wires is m × n/2. The second electrode and the first electrode in each row of sensing electrode unit 40 form mutually corresponding mutual capacitance sensing nodes, and there are (2m-1) × n/4 capacitance nodes in total.

in a first embodiment, please refer to fig. 11a, where m is 13 and n is 8, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 13, and there are 2 rows of the sensing electrode units 40, so that the total number of the second electrodes is m × n/4 is 26, each second electrode has one second connection line L8, and there are 26 second connection lines L8; each row of the sensing electrode units 40 has a total number of first electrodes, m × n/4 is 26, and each first electrode has one second connection line L8, so that m × n/4 is 26 second connection lines L8. Therefore, the required number of leads is m × n/2, 52. In practice, the lowermost adjacent X13 electrode leads may be combined such that the total number of leads is 52-1 to 51; and there are (2m-1) × n/4 ═ 50 mutual capacitance sensing nodes.

In a second embodiment, please refer to fig. 11b, where m is 13 and n is 16, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 13, there are 4 rows of the sensing electrode units 40, so that the total number of the second electrodes is m × n/4 is 52, each second electrode has one second connection line L8 to the bonding area, and there are 52 second connection lines L8; the number a of the first electrodes in each row of the sensing electrode units 40 is 13, the total number of the first electrodes is m × n/4 52, and each first electrode has one first connection line L7, so that m × n/4 is 52 first connection lines L7. Therefore, the required number of lead wires is m × n/2, 104. In practical application, the X13 electrode lead wires adjacent to the lowest end can be combined, so that the total lead wire number is 104-2 to 102; and there are (2m-1) × n/4 ═ 100 mutual capacitance sensing nodes.

In a third embodiment, please refer to fig. 11c, where m is 17 and n is 8, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 17, and there are 2 rows of the sensing electrode units 40, so that the total number of the second electrodes is mxn/4 is 34, each second electrode has one second connection line L8, and there are m × n/2 is 34 second connection lines L8; the number a of the first electrodes in each row of the sensing electrode units 40 is equal to m and equal to 17, the total number of the first electrodes is m × n/4 and equal to 34, and each first electrode has one first lead line L7, so that m × n/4 and equal to 34 first lead lines L7 are total. Therefore, the required number of leads is m × n/2 — 68. In practice, the lowermost adjacent X17 electrode leads may be combined such that the total number of leads is 68-1 to 67; and there are (2m-1) × n/4 ═ 66 mutual capacitance sensing nodes.

In a fourth embodiment, please refer to fig. 11d, where m is 17 and n is 16, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 17, there are 4 rows of the sensing electrode units 40, so that the total number of the second electrodes is mxn/4 is 68, each second electrode has one second connection line L8, and there are 68 second connection lines L8; the number a of the first electrodes in each row of the sensing electrode units 40 is equal to m and equal to 17, the total number of the first electrodes is m × n/4 and equal to 68, and each first electrode has one first connection line L7, so that m × n/4 is equal to 68 first connection lines L7. Therefore, the required number of leads is m × n/2 ═ 136. In practice, the lowermost adjacent X17 electrode leads may 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.

In a fifth embodiment, please refer to fig. 11e, where m is 21 and n is 8, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 21, there are 2 rows of the sensing electrode units 40, so that the total number of the second electrodes is mxn/4 is 42, each second electrode has one second connection line L8 to the bonding area, and there are 42 second connection lines L8; the number a of the first electrodes in each row of the sensing electrode units 40 is 21, the total number of the first electrodes is m × n/4 42, and each first electrode has one first connection line L7, so that m × n/4 is 42 first connection lines L7. Therefore, the required number of leads is m × n/2 — 84. In practice, the lowermost adjacent X21 electrode leads may be combined such that the total number of leads is 84-1 to 83; and there are (2m-1) × n/4 ═ 82 mutual capacitance sensing nodes.

In a sixth embodiment, please refer to fig. 11f, where m is 21 and n is 16, that is, the number of the second electrodes in each row of the sensing electrode units 40 is 21, there are 4 rows of the sensing electrode units 40, so that the total number of the second electrodes is mxn/4 is 84, each second electrode has one second connection line L8, and there are 84 second connection lines L8; the number a of the first electrodes in each row of the sensing electrode units 40 is 21, the total number of the first electrodes is m × n/4 84, and each first electrode has one first lead line L7, so that m × n/4 is 84 first lead lines L7. Therefore, the required number of leads is m × n/2 equal to 168. In practice, the lowermost adjacent X21 electrode leads may be combined such that the total number of leads 168-2 is 166; there are 164 mutual capacitance sensing nodes in total, including mutual capacitance sensing node 1001, mutual capacitance sensing node 1041, mutual capacitance sensing node 1042, mutual capacitance sensing node 1082, mutual capacitance sensing node 1083, mutual capacitance sensing node 1123, mutual capacitance sensing node 1124, mutual capacitance sensing node 1164, etc., as shown in fig. 12 f.

As shown in fig. 12, the touch screen device further includes a touch control chip 300 (see fig. 4, not shown in fig. 12), where the touch control chip 300 is connected to both the first electrode and the second electrode of the multiple sensing electrode units, and is used for performing capacitance sensing to obtain touch information.

When the plurality of sensing electrode units are in mirror symmetry with each other, two adjacent sensing electrode units arranged in mirror symmetry with each other 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, two rows of second electrodes of each group of sensing electrode units are located between two rows of first electrodes, each row of first electrodes is connected to different pins of the touch control chip 300 through first lead wires, each row of second electrodes is connected to different pins of the touch control chip 300 through second lead wires, and the second electrodes in the same position order are connected to the same pin of the touch control chip 300 through second lead wires.

Two rows of first electrodes are arranged on two opposite side edges of the plurality of sensing electrode units, wherein for the two rows of first electrodes, the first electrodes in the same position order are connected to different pins of the touch control chip 300 through first lead wires.

Therefore, the first electrodes are connected to 32 pins of the touch control chip 300, the second electrodes are connected to 13 pins of the touch control chip 300, and the capacitance sensing nodes include the mutual capacitance sensing node 301, the mutual capacitance sensing node 318, the mutual capacitance sensing node 319, the 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, and the like shown in fig. 12.

As shown in fig. 13, the touch screen device further includes a touch control chip 300 (see fig. 4, not shown in fig. 13), where the touch control chip 300 is connected to both the first electrode and the second electrode of the multiple sensing electrode units, and is used for performing capacitance sensing to obtain touch information.

The plurality of sensing electrode units are integrally divided into a left half part and a right half part according to regions, the left half part comprises the plurality of sensing electrode units, the right half part comprises the plurality of sensing electrode units, and the number of the sensing electrode units respectively included in the left half part and the right half part is the same.

For each column of second electrodes in the left half, the second electrodes in the same positional order are connected to the same pin of the touch control chip 300 through the second lead lines, for example, the first second electrode of the first column of second electrodes in the left half, the first second electrode of the second column of second electrodes, the first second electrode of the third column of second electrodes, and the first second electrode of the fourth column of second electrodes are connected to the same pin of the touch control chip 300 through the second lead lines.

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

For the second electrodes in different sections, the second electrodes in the same positional order are connected to different pins of the touch control chip 300 through second lead lines, for example, the second electrodes in the left half and the second electrodes in the right half are connected to different pins of the touch control chip 300 through second lead lines.

For each column of first electrodes of the left half part, the first electrodes in the same positional order are connected to different pins of the touch control chip 300 through first lead lines; for the first electrodes of the respective columns of the right half, the first electrodes in the same positional order are connected to different pins of the touch control chip 300 through first lead lines.

The second electrodes located at mutually symmetrical positions along the central axis of the entire area in the left half and the right half are connected to the same pin of the touch control chip 300 through a second lead line. For example, the first column of second electrodes in the left half and the last column of second electrodes in the right half are symmetrical to each other with respect to the central axis, and the first electrode of the first column of second electrodes and the first electrode of the last column of second electrodes are connected to the same pin of the touch control chip 300.

A touch panel device according to a seventh embodiment of the present invention, as shown in fig. 14, is different from the sixth embodiment in that: for the first electrodes in different portions, the first electrodes in the same positional order are connected to the same pin of the touch control chip 300 (see fig. 4, not shown in fig. 14) through the first lead line. For example, one first electrode in the first row and the first column in the left half and one first electrode in the first row and the first column in the right half are connected to the same pin of the touch control chip 300.

As shown in fig. 15, the touch screen device further includes a touch control chip 300 (see fig. 4, not shown in fig. 15), where the touch control chip 300 is connected to both the first electrode and the second electrode of the multiple sensing electrode units, and is used for performing capacitance sensing to obtain touch information.

When the plurality of sensing electrode units are in mirror symmetry with each other, two adjacent sensing electrode units arranged in mirror symmetry with each other are divided into a group, where m is 22 and n is 10, the group is divided into four regions, where a region one is a first group, a region two is a second group, a region three is a third group, and a region four is a fourth group, the plurality of first electrodes are arranged in rows, the plurality of second electrodes are arranged in rows, two rows of second electrodes of each sensing electrode unit are located between two rows of first electrodes, and the second electrodes in the same position order are connected to the same pin of the touch control chip 300 through a second lead wire, for example, a first electrode of the first row of second electrodes and a first electrode of the second row of second electrodes in the region one are connected to the same pin of the touch control chip 300.

For two columns of first electrodes of each group of sensing electrode units, the first electrodes in the same position order are connected to different pins of the touch control chip 300 through first lead lines, for example, a first electrode of the first column of first electrodes and a first electrode of the second column of first electrodes in area one are connected to different pins of the touch control chip 300.

For two adjacent groups of sensing electrode units, two columns of first electrodes located between the second electrodes are adjacent, and for the two adjacent columns of first electrodes, the first electrodes in the same position order are connected to the same pin of the touch control chip 300 through the first lead wire, for example, the first electrode of the second column of first electrodes in the first area and the first electrode of the first column of first electrodes in the second area are connected to the same pin of the touch control chip 300.

For two adjacent groups of sensing electrode units, the second electrodes in different groups are connected to different pins of the touch control chip 300 through second lead lines, for example, the second electrode in the first area and the second electrode in the second area are connected to different pins of the touch control chip 300.

For two groups of sensing electrode units separated by one group of sensing electrode units, the second electrodes in the same position order are connected to the same pin of the touch control chip 300 through the second lead wire, for example, the first electrode of the second column of first electrodes in the first area and the first electrode of the second column of first electrodes in the third area are connected to the same pin of the touch control chip 300.

In the embodiment of the invention, the first electrode is connected with 10 pins of the touch control chip 300, and the second electrode is connected with 22 pins of the touch control chip 300, so that a plurality of pins of the touch control chip can be fully utilized, the configuration is more flexible, the touch position can be more easily and accurately identified, the linearity and the touch precision are improved, and the optimal touch effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A single-layer mutual capacitance touch screen is characterized in that: the single-layer mutual capacitance touch screen includes:

2. The single layer mutual capacitance touch screen of claim 1, wherein: according to the difference of the areas, the first electrodes are divided into first electrodes and second electrodes, the second electrodes are divided into third electrodes and fourth electrodes, the area of the first electrodes is J times of the area of the second electrodes, the area of the third electrodes is K times of the area of the fourth electrodes, J and K are positive numbers, and J is larger than K.

3. The single layer mutual capacitance touch screen of claim 1, wherein: each mutual capacitance sensing node is formed by cross-coupling a first electrode and a second electrode.

4. The single layer mutual capacitance touch screen of claim 1, wherein: the plurality of induction electrode units are in mirror symmetry pairwise.

5. The single layer mutual capacitance touch screen of claim 1, wherein: the number of mutual capacitance induction nodes formed by each second type of first electrode and each second electrode is different from the number of mutual capacitance induction nodes formed by each third type of electrode and each first electrode, and the number of mutual capacitance induction nodes formed by each second type of first electrode and each second electrode is different from the number of mutual capacitance induction nodes formed by each fourth type of electrode and each first electrode.

6. The single layer mutual capacitance touch screen of claim 5, wherein: each first-type electrode and at least one second electrode form a mutual capacitance sensing node, each second-type electrode and at least two third-type electrodes form a mutual capacitance sensing node, each second-type electrode and at least one fourth-type electrode form a mutual capacitance sensing node, each third-type electrode and at least two first electrodes form a mutual capacitance sensing node, and each fourth-type electrode and at least one first electrode form a mutual capacitance sensing node.

7. The single layer mutual capacitance touch screen of claim 6, wherein: each first-type electrode and one third-type electrode form a mutual capacitance sensing node, each second-type electrode and two third-type electrodes form two mutual capacitance sensing nodes and at least one fourth-type electrode form a mutual capacitance sensing node, each third-type electrode and two first electrodes form two mutual capacitance sensing nodes, and each fourth-type electrode and one second-type electrode form a mutual capacitance sensing node.

8. The single layer mutual capacitance touch screen of claim 7, wherein: for an induction electrode unit, the first electrodes comprise two first electrodes, the two first electrodes are located at two ends of the plurality of first electrodes, the second electrodes are located between the two first electrodes, the third electrodes and the fourth electrodes are alternately arranged at intervals, and two ends of the plurality of second electrodes are respectively the third electrodes.

9. The single layer mutual capacitance touch screen of claim 8, wherein: each induction electrode unit is the same.

10. The single layer mutual capacitance touch screen of claim 9, wherein: each second-type electrode and two third-type electrodes form two mutual capacitance sensing nodes, and each second-type electrode and one fourth-type electrode form one mutual capacitance sensing node.

11. The single layer mutual capacitance touch screen of claim 9, wherein: each second-type electrode and the two third-type electrodes form two mutual capacitance sensing nodes, and each second-type electrode and the two fourth-type electrodes form two mutual capacitance sensing nodes.

12. The single layer mutual capacitance touch screen of claim 1, wherein: for each electrode sensing unit, the plurality of first electrodes further comprise electrodes of a fifth type, and the plurality of second electrodes further comprise electrodes of a sixth type, wherein for a sensing electrode unit, the number of the first type electrodes is the same as that of the sixth type electrodes, the number of the second type electrodes is the same as that of the fourth type electrodes, and the number of the fifth type electrodes is the same as that of the third type electrodes.

13. The single layer mutual capacitance touch screen of claim 12, wherein: for an induction electrode unit, the number of mutual capacitance induction nodes formed by each first electrode and each second electrode is the same as the number of mutual capacitance induction nodes formed by each fourth electrode and each first electrode, the number of mutual capacitance induction nodes formed by each second electrode and each second electrode is the same as the number of mutual capacitance induction nodes formed by each sixth electrode and each first electrode, and the number of mutual capacitance induction nodes formed by each fifth electrode and each second electrode is the same as the number of mutual capacitance induction nodes formed by each third electrode and each first electrode.

14. The single layer mutual capacitance touch screen of claim 13, wherein: for an induction electrode unit, the arrangement mode of the first electrodes is the same as that of the second electrodes after being integrally inverted from top to bottom, and the first electrodes are respectively in one-to-one correspondence with the second electrodes after being integrally inverted from top to bottom.

15. The single layer mutual capacitance touch screen of claim 14, wherein: the areas of the first electrode, the second electrode and the fifth electrode are different, the areas of the third electrode, the fourth electrode and the sixth electrode are different, the area of the first electrode is the same as that of the fourth electrode, the area of the fifth electrode is the same as that of the third electrode, and the area of the second electrode is the same as that of the sixth electrode.

16. The single layer mutual capacitance touch screen of claim 1, wherein: for each sensing electrode unit, the number of the first electrodes is m, the number of the second electrodes is a, m is a natural number which is greater than or equal to 5, and a is a natural number which is greater than or equal to 4.

17. A touch screen device, characterized by: the touch screen device comprises a single layer mutual capacitance touch screen as recited in any one of claims 1-16.

18. 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 with the first electrodes and the second electrodes in the multiple sensing electrode units and used for carrying out capacitance sensing to obtain touch information.

19. The touch screen device of claim 18, wherein: for each sensing electrode unit:

the first electrodes are respectively connected to different pins of the touch control chip through the first lead wires, the second electrodes are divided into a plurality of electrode groups, each electrode group comprises at least one second electrode, the second electrodes in the same electrode group are not adjacent, the second electrodes in the same electrode group are connected to the same pins of the touch control chip through the second lead wires, and the second electrodes in different electrode groups are 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 comprises at least one first electrode, the first electrodes in the same electrode group are not adjacent, the first electrodes in the same electrode group are connected to the same pin of the touch control chip through the first lead wires, the first electrodes in different electrode groups are connected to different pins of the touch control chip, and the plurality of second electrodes are respectively connected to different pins of the touch control chip through the second lead wires.

20. 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 row of second electrodes in each sensing electrode unit, each second electrode in the same position sequence is connected with the same pin of a touch control chip through a second lead wire.

21. The touch screen device of claim 19, wherein: for each column of first electrodes, the first electrodes in the same position sequence are connected with different pins of the touch control chip through first lead wires.

22. The touch screen device of claim 18, wherein: when the plurality of sensing electrode units are in pairwise mirror symmetry, two adjacent sensing electrode units which are arranged in a pairwise mirror symmetry manner 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, the two rows of second electrodes of each group of sensing electrode units are positioned between the two rows of first electrodes, and the second electrodes which are positioned in the same position sequence are connected to the same pin of the touch control chip through second lead wires.

23. The touch screen device of claim 22, wherein for two columns of first electrodes of each group of sense electrode units, the first electrodes in the same positional order are connected to different pins of the touch control chip by first lead lines.

24. The touch screen device of claim 23, wherein for two adjacent sets of sensing electrode units, two columns of first electrodes located between the second electrodes are adjacent, and for the two adjacent columns of first electrodes, the first electrodes in the same positional order are connected to the same pin of the touch control chip through the first lead line.

25. The touch screen device of claim 24, wherein for two adjacent groups of sense electrode units, the second electrodes in different groups are connected to different pins of the touch control chip by second lead lines.

26. The touch screen device of claim 25, wherein for two groups of sensing electrode units separated by one group of sensing electrode units, the second electrodes in the same positional order are connected to the same pin of the touch control chip through a second lead line.

27. 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, and wherein for the two columns of first electrodes, the first electrodes in the same positional order are connected to the same pin of the touch control chip through a first lead line.

28. 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, and wherein for the two columns of first electrodes, the first electrodes in the same positional order are connected to different pins of the touch control chip through first lead lines.

29. The touch screen device according to claim 23, wherein the plurality of sensing electrode units are divided into a left half and a right half by regions as a whole, the left half includes the plurality of sensing electrode units, the right half includes the 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, wherein:

for each column of second electrodes in the left half part, the second electrodes in the same position sequence are connected to the same pin of the touch control chip through a second lead wire;

for each column of second electrodes in the right half part, the second electrodes in the same position sequence are connected to the same pin of the touch control chip through a second lead wire;

for the second electrodes in different portions, the second electrodes in the same positional order are connected to different pins of the touch control chip through second lead lines.

30. The touch screen device of claim 29, wherein for each column of first electrodes of the left half, the first electrodes in the same positional order are connected to different pins of the touch control chip by first lead lines; for the first electrodes of each column of the right half part, the first electrodes in the same positional order are connected to different pins of the touch control chip through first lead lines.

31. The touch screen device of claim 30, wherein for first electrodes in different sections, the first electrodes in the same positional order are connected to the same pin of the touch control chip through a first lead line.

32. The touch screen device of claim 30, wherein the second electrodes positioned in the left half and the right half at positions symmetrical to each other along the central axis of the entire area are connected to the same pin of the touch control chip through a second lead line.

33. An electronic device, characterized in that: the electronic device comprising a touch screen apparatus according to any of claims 17-32.