WO2021168607A1

WO2021168607A1 - Touch structure, touch panel and touch driving method

Info

Publication number: WO2021168607A1
Application number: PCT/CN2020/076406
Authority: WO
Inventors: 蒋宜辰; 张光均; 罗鸿强; 张贵玉
Original assignee: 京东方科技集团股份有限公司; 成都京东方光电科技有限公司
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-09-02
Also published as: CN113574494A; CN113574494B

Abstract

A touch structure, a touch panel, and a touch driving method. The touch structure (10) comprises a plurality of touch electrode combinations (11), and the plurality of touch electrode combinations (11) are arranged in an array. At least a portion of the touch electrode combinations (11) among the plurality of touch electrode combinations (11) comprise main electrodes (111) and a set of N secondary electrodes (112), wherein the N secondary electrodes (112) are juxtaposed in a first direction, the N secondary electrodes (112) and the main electrodes (111) are juxtaposed in a second direction, and the first direction and the second direction intersect. The N secondary electrodes (112) of the touch electrode combinations (11) are driven by N secondary touch channels, respectively, and the main electrodes (111) are driven by a main primary touch channel, wherein N is an integer greater than 1. The touch structure (10) has a small number of touch channels, which reduces the number of touch blind regions caused by channel wiring, and is advantageous in achieving a narrow frame; the touch structure requires a small number of masks, which may avoid the problem of low grounding quality, and is helpful in achieving a large size and a folding screen.

Description

Touch control structure, touch control panel and touch control driving method

Technical field

The embodiments of the present disclosure relate to a touch structure, a touch panel, and a touch driving method.

Background technique

With the development of technology, touch screens have been used more and more widely. The touch screen uses a tactile feedback system to replace the mechanical button panel, thereby providing a simple and convenient way of human-computer interaction. According to different working principles, touch screens include capacitive, resistive, infrared, and surface acoustic wave types. Capacitive touch screens use the human body's current sensing phenomenon to work, support multi-touch, and have the advantages of wear resistance, long life, low power consumption, etc., so they have developed rapidly and have been widely used in mobile phones, tablets, and notebooks. Computers, televisions, monitors, digital photo frames, navigators and other electronic products.

Summary of the invention

At least one embodiment of the present disclosure provides a touch structure including a plurality of touch electrode combinations, wherein the plurality of touch electrode combinations are arranged in an array, and at least part of the touch electrodes in the plurality of touch electrode combinations The combination includes a main electrode and a set of N secondary electrodes, the N secondary electrodes are arranged side by side in a first direction, the N secondary electrodes and the main electrode are arranged side by side in a second direction, the first direction Crossing the second direction, the N secondary electrodes of the touch electrode combination are respectively driven by N secondary touch channels, and the main electrodes are driven by the primary touch channels, and N is an integer greater than 1.

For example, in the touch structure provided by an embodiment of the present disclosure, the main electrodes of multiple touch electrode combinations located in the same column are located in the same column and driven by different main touch channels, and the multiple touch electrodes located in the same column The multiple groups of N secondary electrodes of the electrode combination are located in the same column, and are respectively driven by the same N secondary touch channels.

For example, in the touch structure provided by an embodiment of the present disclosure, the multiple secondary touch channels used to drive the secondary electrodes of the touch electrode combinations of different columns are different.

For example, the touch structure provided by an embodiment of the present disclosure further includes a plurality of wires, wherein the plurality of wires connect the N sub-electrodes in different touch electrode combinations located in the same column in series respectively, so as to obtain N mutual electrodes. Insulated signal paths, the N signal paths that are insulated from each other are electrically connected to the N secondary touch channels, respectively.

For example, in the touch structure provided by an embodiment of the present disclosure, two adjacent touch electrode combinations in the same column include a first touch electrode combination and a second touch electrode combination, and the first touch electrode The combined N sub-electrodes are electrically connected to the N sub-electrodes of the second touch electrode combination, and the N sub-electrodes of the first touch electrode combination and N of the second touch electrode combination The secondary electrodes are arranged in the reverse order along the first direction.

For example, in the touch structure provided by an embodiment of the present disclosure, each touch electrode combination in the at least part of the touch electrode combination includes 4 sub-electrodes, and the 4 sub-electrodes include the first secondary touch The first electrode driven by the control channel, the second electrode driven by the second secondary touch channel, the third electrode driven by the third secondary touch channel, and the second electrode driven by the fourth secondary touch channel. Four-time electrodes, the secondary electrodes of the first touch electrode combination are arranged in the first direction in the order of the first primary electrode-the second secondary electrode-the third secondary electrode-the fourth secondary electrode, and the second touch The secondary electrodes of the control electrode combination are arranged along the first direction in the order of the fourth time electrode-the third time electrode-the second time electrode-the first time electrode.

For example, in the touch structure provided by an embodiment of the present disclosure, the plurality of wires are distributed in an S-shaped extension.

For example, in the touch structure provided by an embodiment of the present disclosure, the main electrodes of the touch electrode combination located in the same row are driven by the same main touch channel.

For example, in the touch structure provided by an embodiment of the present disclosure, for the same touch electrode combination, the area of the primary electrode is larger than the area of the secondary electrode.

For example, the touch structure provided by an embodiment of the present disclosure further includes a plurality of main signal lines and a plurality of secondary signal lines, and the plurality of main signal lines extend along the first direction and are connected to the plurality of touch signals. The main electrodes in the electrode combination are respectively electrically connected, the multiple secondary signal lines extend along the first direction and are divided into multiple groups, and the multiple sets of secondary signal lines are electrically connected to the secondary electrodes in the multiple columns of touch electrode combinations. Connection, each set of secondary signal lines includes N secondary signal lines, and N secondary signal lines in each set of secondary signal lines provide N secondary signals for driving the secondary electrodes of the touch electrode combination in the same column Touch channel.

For example, in the touch structure provided by an embodiment of the present disclosure, the main signal lines that are electrically connected to the main electrodes in the touch electrode combination located in the same row are electrically connected to each other.

For example, in the touch structure provided by an embodiment of the present disclosure, the shape of the main electrode and the shape of the secondary electrode are both rectangular or square.

For example, in the touch structure provided by an embodiment of the present disclosure, in the same touch electrode combination, the length of the primary electrode in the first direction is greater than or equal to the distribution area of the N secondary electrodes. The length in the first direction.

For example, in the touch structure provided by an embodiment of the present disclosure, the touch structure is a self-capacitive touch structure, and the primary electrode and the secondary electrode are both self-capacitance touch electrodes.

For example, in the touch structure provided by an embodiment of the present disclosure, the multiple touch electrode combinations are arranged in the same layer.

At least one embodiment of the present disclosure further provides a touch panel including the touch structure described in any embodiment of the present disclosure.

For example, the touch panel provided by an embodiment of the present disclosure further includes a display structure, wherein the touch structure and the display structure are stacked.

At least one embodiment of the present disclosure further provides a touch driving method for the touch structure according to any one of the embodiments of the present disclosure, including: detecting the primary sensing signal of the primary electrode and the secondary electrode of the secondary electrode respectively. The sensing signal determines the touch position based on the primary sensing signal and the secondary sensing signal.

For example, in the touch driving method provided by an embodiment of the present disclosure, the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode are respectively detected based on the primary sensing signal and the secondary sensing signal. The determination of the touch position by the secondary sensing signal includes: detecting the main sensing signals of all the main electrodes in the touch structure, and determining the touch area according to the main sensing signals of the main electrodes; detecting that it is located in the touch area The secondary sensing signal of the secondary electrode within; the touch position is determined based on the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode.

For example, in the touch driving method provided by an embodiment of the present disclosure, the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode are respectively detected based on the primary sensing signal and the secondary sensing signal. The secondary sensing signal determines the touch position, including: detecting primary sensing signals of all primary electrodes and secondary sensing signals of all secondary electrodes in the touch structure; based on the primary sensing signal and the secondary sensing signal , Determine the touch position.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the drawings of the embodiments. Obviously, the drawings in the following description only refer to some embodiments of the present disclosure, rather than limiting the present disclosure. .

FIG. 1 is a schematic plan view of a touch structure;

2 is a schematic plan view of a touch structure provided by some embodiments of the present disclosure;

FIG. 3 is a partial enlarged view of the touch structure shown in FIG. 2;

4 is a schematic cross-sectional view of a touch structure provided by some embodiments of the present disclosure;

FIG. 5 is a schematic diagram of a touch detection method of a touch structure provided by some embodiments of the present disclosure;

FIG. 6 is a schematic block diagram of a touch panel provided by some embodiments of the present disclosure;

FIG. 7 is a schematic cross-sectional view of another touch panel provided by some embodiments of the present disclosure;

FIG. 8 is a schematic flowchart of a touch driving method provided by some embodiments of the present disclosure; and

FIG. 9 is a schematic flowchart of another touch driving method provided by some embodiments of the present disclosure.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the protection scope of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, similar words such as "a", "one" or "the" do not mean a quantity limit, but mean that there is at least one. "Include" or "include" and other similar words mean that the element or item appearing before the word covers the element or item listed after the word and their equivalents, but does not exclude other elements or items. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

Capacitive touch screens include self-capacitive touch screens and mutual-capacitive touch screens. The touch structure in a self-capacitive touch screen is usually a self-capacitance electrode, and the self-capacitance electrode forms a capacitance with the ground, that is, the self-capacitance electrode itself has a capacitance with respect to the ground. When the user's finger touches the screen, the capacitance of the finger is superimposed on the capacitance of the self-capacitance electrode itself, thereby increasing the capacitance. During touch detection, the user's finger touches the screen, which causes the capacitance of the self-capacitance electrode at the touch point to change. By detecting the change in capacitance, the coordinates of the touch point can be determined.

The development of touch screens and display screens complement each other. With the development of flexible display technology, flexible touch screens have gradually become a research hotspot. Flexible touch screens generally include flexible single layer (Flexible Single Layer On Cell, FSLOC) touch screens and flexible multiple layer (Flexible Multiple Layers On Cell, FMLOC) touch screens. The touch structure in the FSLOC touch screen is a single layer, that is, the touch structure is a single layer of self-capacitance electrodes. Therefore, compared with the FMLOC touch screen, the FSLOC touch screen requires less masks during the preparation process, and can achieve ultra-narrow or no frame. Moreover, due to the principle of self-capacitance, the electrode area of each channel is small, and the capacitance The load is small, which can avoid low ground mass (LGM) problems, and is suitable for medium and large size and folding screen products.

FIG. 1 is a schematic plan view of a touch structure, which is used in a common FSLOC touch screen, for example. For example, the touch structure includes a plurality of electrodes 002, and the electrodes 002 are disposed on a base substrate 001. Each electrode 002 is a self-capacitance electrode and is driven by a separate touch channel. Each electrode 002 is electrically connected to a corresponding touch channel in a separately provided touch drive circuit (or touch drive chip) through a signal line 003.

As the screen size increases, the number of touch channels will increase sharply. For example, taking a 6.53-inch FSLOC touch screen as an example, the number of self-capacitance electrodes and touch channels required is as high as 352. Correspondingly, the number of signal lines 003 also sharply increases as the screen size increases. A large number of signal lines 003 require a larger wiring area, so that the distance between adjacent electrodes 002 is relatively large, and the area between adjacent electrodes 002 cannot be touch-detected, that is, a touch blind zone (for example, The area indicated by the dashed box in Figure 1). Therefore, a large number of channel wiring (such as signal line 003 wiring) causes more touch blind areas, and also needs to occupy more lower frame area, thereby limiting the application of FSLOC touch screens in large-size products.

At least one embodiment of the present disclosure provides a touch structure, a touch panel, and a touch driving method. The touch structure of the touch structure has a small number of touch channels, which reduces touch blind areas caused by channel wiring, is conducive to achieving a narrow frame, and requires a small number of masks, which can reduce costs and improve process yield, and can avoid low grounding Quality issues help to achieve large-size and folding screens.

Hereinafter, embodiments of the present disclosure will be explained in detail with reference to the drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements that have been described.

At least one embodiment of the present disclosure provides a touch structure including a plurality of touch electrode combinations, and the plurality of touch electrode combinations are arranged in an array. At least a part of the touch electrode combination in the plurality of touch electrode combinations includes a main electrode and a set of N sub-electrodes. The N sub-electrodes are arranged side by side in the first direction, and the N sub-electrodes and the main electrode are side-by-side in the second direction. Set, the first direction and the second direction intersect. The N secondary electrodes of the touch electrode combination are respectively driven by N secondary touch channels, and the main electrodes are driven by the main touch channels. N is an integer greater than one.

FIG. 2 is a schematic plan view of a touch structure provided by some embodiments of the present disclosure. As shown in FIG. 2, the touch structure 10 includes a plurality of touch electrode combinations 11. The multiple touch electrode assemblies 11 are disposed on the base substrate 001 and arranged in an array. For example, a plurality of touch electrode combinations 11 are arranged in multiple rows and multiple columns, a row of touch electrode combinations 11 can be arranged in a horizontal straight line, an oblique line, or a fold line, and a row of touch electrode combinations 11 can be arranged along a vertical line. Arrange in a straight line, along an oblique line, or along a broken line. When the touch structure 10 is applied to a touch panel or a touch device, the number of touch electrode combinations 11, the number of rows and columns of the array formed by multiple touch electrode combinations 11, and the number of multiple touch electrode combinations The arrangement of 11 can be determined according to actual requirements, for example, according to the size and display requirements of the touch panel or touch device, and is not limited to the number and arrangement shown in FIG. 2.

For example, at least part of the touch electrode assembly 11 includes a main electrode 111 and a group of N sub-electrodes 112, where N is an integer greater than one. For example, in some examples, as shown in FIG. 2, each touch electrode combination 11 includes a main electrode 111 and a group of 4 sub-electrodes 112, that is, N=4. Of course, the embodiments of the present disclosure are not limited to this, and N can also be any value such as 2, 3, 5, etc., which can be determined according to actual requirements, such as accuracy requirements and channel number requirements.

For example, N secondary electrodes 112 are arranged in parallel in the first direction, and N secondary electrodes 112 and main electrodes 111 are arranged in parallel in the second direction. For example, the first direction and the second direction intersect. For example, in some examples, as shown in FIG. 2, the first direction is a column direction, the second direction is a row direction, and the first direction and the second direction are perpendicular to each other. It should be noted that, in the embodiment of the present disclosure, the first direction and the second direction can be any two directions that cross each other, and the angle between the two can be less than 90 degrees, for example. In this case, a combination of touch electrodes In 11, the N sub-electrodes 112 are arranged obliquely, and the main electrodes 111 are also obliquely arranged.

For example, the N secondary electrodes 112 of the touch electrode assembly 11 are respectively driven by N secondary touch channels, and the main electrodes 111 are driven by the primary touch channels. For example, the touch channel (secondary touch channel and main touch channel) may be a driving channel in a separately provided touch driving circuit, and the touch driving circuit may drive the main electrode 111 and the secondary electrode 112 through the touch channel. For example, the touch drive circuit can collect the sensing signals of the main electrode 111 and the secondary electrode 112 through the touch channel, and can also output scan signals to the primary electrode 111 and the secondary electrode 112 through the touch channel. Driving of the secondary electrode 112.

It should be noted that since the touch structure 10 shown in FIG. 2 does not include a separately provided touch drive circuit, in order to more clearly describe the embodiments of the present disclosure, the touch channel provided by the touch drive circuit Marked on the corresponding electrode in Figure 2. For example, as shown in FIG. 2, the main electrodes 111 in the touch electrode combination 11 located in the first row and the first column are driven by the main touch channel M1, and the N sub-electrodes 112 are respectively driven by the N secondary touch channels. The N secondary touch channels are S1, S2, S3, and S4, respectively.

It should be noted that in the embodiments of the present disclosure, the touch channel used to drive the main electrode 111 is called the main touch channel, and the touch channel used to drive the secondary electrode 112 is called the secondary touch channel. The primary touch channel and the secondary touch channel can be any drive channel in the touch drive circuit, and both can drive correspondingly connected electrodes, and there is no structural difference.

It should be noted that, in the embodiments of the present disclosure, the manner in which the touch drive circuit drives the main electrode 111 and the secondary electrode 112 through the touch channel is not limited, and only the sensing signals of the primary electrode 111 and the secondary electrode 112 can be collected. The scanning signal can be output only to the main electrode 111 and the secondary electrode 112, or the sensing signal of the main electrode 111 and the secondary electrode 112 can be collected, and the scanning signal can be output to the main electrode 111 and the secondary electrode 112. This can be determined according to actual needs. The disclosed embodiment does not limit this.

For example, as shown in FIG. 2, the main electrodes 111 of the multiple touch electrode combinations 11 located in the same column are located in the same column and are driven by different main touch channels. Taking the first row of touch electrode combinations 11 as an example, in the order along the first direction, the multiple main electrodes 111 are respectively driven by the main touch channels M1, M2, M3, and M4, and the main touch channels M1, M2, M3, and M4 is different from each other, that is, the main touch channels M1, M2, M3, and M4 are four different touch channels.

For example, multiple sets of N sub-electrodes 112 of multiple touch electrode combinations 11 located in the same column are located in the same column, and are driven by the same N secondary touch channels, respectively. Still taking the touch electrode combination 11 in the first column as an example, multiple sets of N secondary electrodes 112 are respectively driven by the same N secondary touch channels S1, S2, S3, and S4. That is, in the column of touch electrode combinations 11, the four secondary electrodes 112 in the first row of touch electrode combinations 11 are respectively driven by the secondary touch channels S1, S2, S3, and S4, and the second row of touch The four secondary electrodes 112 in the electrode assembly 11 are also driven by the secondary touch channels S1, S2, S3, S4, and so on. Therefore, the N sub-electrodes 112 of the plurality of groups of the touch electrode assembly 11 in each column share the N sub-touch channels. For example, as shown in FIG. 2, the secondary electrodes 112 of the touch electrode assembly 11 in the first column share 4 secondary touch channels S1, S2, S3, and S4, and the secondary electrodes 112 of the touch electrode assembly 11 in the second column share 4 There are two secondary touch channels S5, S6, S7 and S8, and so on.

For example, the multiple secondary touch channels used to drive the secondary electrodes 112 of the touch electrode combinations 11 of different columns are different. For example, as shown in FIG. 2, the secondary touch channels of the secondary electrodes 112 used to drive the touch electrode assembly 11 in the first column are S1, S2, S3, and S4, which are used to drive the touch electrode assembly in the second column. The secondary touch channels of the secondary electrode 112 of 11 are S5, S6, S7, and S8, and the secondary touch channels of the secondary electrode 112 used to drive the third column of the touch electrode assembly 11 are S9, S10, S11, and S12. , And so on. The secondary touch channels S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11 and S12 are different from each other.

FIG. 3 is a partial enlarged view of the touch structure shown in FIG. 2, for example, an enlarged view of the touch electrode assembly 11 in the first column in FIG. 2. For example, two adjacent touch electrode combinations 11 located in the same column include a first touch electrode combination 11a and a second touch electrode combination 11b. The N sub-electrodes 112 of the first touch electrode combination 11a are electrically connected to the N sub-electrodes 112 of the second touch electrode combination 11b, and the N sub-electrodes 112 of the first touch electrode combination 11a and the second touch The N sub-electrodes 112 of the electrode assembly 11b are arranged in a reverse order along the first direction.

Taking the first touch electrode combination 11a and the second touch electrode combination 11b shown in FIG. 3 as an example, each touch electrode combination 11 (any of the first touch electrode combination 11a and the second touch electrode combination 11b) A) includes 4 secondary electrodes 112, and the 4 secondary electrodes 112 include a first secondary electrode 112a driven by a first secondary touch channel S1, a second secondary electrode 112b driven by a second secondary touch channel S2, The third secondary electrode 112c driven by the third secondary touch channel S3 and the fourth secondary electrode 112d driven by the fourth secondary touch channel S4.

For example, the secondary electrodes 112 of the first touch electrode assembly 11a are arranged in the first direction in the order of the first primary electrode 112a-the second secondary electrode 112b-the third secondary electrode 112c-the fourth secondary electrode 112d, and the second touch electrode The sub-electrodes 112 of the combination 11b are arranged in the first direction in the order of the fourth sub-electrode 112d-the third sub-electrode 112c-the second sub-electrode 112b-the first sub-electrode 112a.

For example, the first primary electrode 112a of the first touch electrode combination 11a is electrically connected to the first primary electrode 112a of the second touch electrode combination 11b, and the second secondary electrode 112b of the first touch electrode combination 11a is electrically connected to the second touch electrode. The second electrode 112b of the electrode assembly 11b is electrically connected, and the third electrode 112c of the first touch electrode assembly 11a is electrically connected to the third electrode 112c of the second touch electrode assembly 11b. The fourth sub-electrode 112d is electrically connected to the fourth sub-electrode 112d of the second touch electrode assembly 11b. For example, each sub-electrode 112 is correspondingly electrically connected by a wire 12, and the conductive 12 will be described in detail below.

For example, as shown in FIG. 2 and FIG. 3, the touch structure 10 further includes a plurality of wires 12. For example, as shown in FIG. 3, the plurality of wires 12 electrically connected to the first column of touch electrode assembly 11 includes a first wire 121, a second wire 122, a third wire 123, a fourth wire 124, and four dashed frames AD In the wire 12. Since the wire 12 in the dashed frame AD is similar to the first wire 121, the second wire 122, the third wire 123, and the fourth wire 124, only the first wire 121, the second wire 122, and the third wire 123 are arranged. The arrangement of the fourth wire 124 will be described in detail. The wire 12 in the dashed frame AD can adopt a similar arrangement and will not be described in detail.

For example, the plurality of wires 12 connect the N sub-electrodes 112 in different touch electrode combinations 11 located in the same column in series respectively to obtain N mutually insulated signal paths, and the N mutually insulated signal paths are connected to the N sub-electrodes respectively. Level touch channel is electrically connected. For example, as shown in FIG. 3, the first wire 121 connects the first primary electrode 112a of the first touch electrode assembly 11a and the first primary electrode 112a of the second touch electrode assembly 11b in series, and passes through the first secondary signal line. (Will be described later) is electrically connected to the first secondary touch channel S1; the second wire 122 connects the second secondary electrode 112b of the first touch electrode assembly 11a and the second secondary electrode of the second touch electrode assembly 11b 112b is connected in series, and is electrically connected to the second secondary touch channel S2 through the second secondary signal line (to be described later); the third wire 123 connects the third secondary electrode 112c of the first touch electrode assembly 11a to the second secondary touch channel S2 The third secondary electrode 112c of the two touch electrode assembly 11b is connected in series, and is electrically connected to the third secondary touch channel S3 through the third secondary signal line (which will be described later); the fourth wire 124 enables the first touch The fourth secondary electrode 112d of the electrode assembly 11a is connected in series with the fourth secondary electrode 112d of the second touch electrode assembly 11b, and is electrically connected to the fourth secondary touch channel S4 through the fourth secondary signal line (which will be described later). connect.

By analogy, each group of N sub-electrodes 112 in the first column of the touch electrode combination 11 is arranged in a head-to-tail-tail-to-head manner, and each group of N sub-electrodes 112 are connected in series through the wires 12 respectively, so as to obtain N signal paths insulated from each other. For example, each signal path is obtained by connecting a plurality of secondary electrodes 112 respectively located in different touch electrode combinations 11 in series, and the N signal paths are electrically connected to the N secondary touch channels. That is, the four sub-electrodes 112 in each group of the touch electrode assembly 11 in the first column can obtain four mutually insulated signal paths through the above-mentioned connection method, and the four signal paths are respectively connected to the four secondary touch channels S1. , S2, S3, and S4 are electrically connected, so that the secondary electrodes 112 in the row of touch electrode combinations 11 share 4 secondary touch channels S1, S2, S3, S4, and only use 4 secondary touch channels S1, S2 , S3, S4 can drive all the sub-electrodes 112 in the row of touch electrode combinations 11, and the four sub-electrodes 112 in each touch electrode combination 11 are composed of four secondary touch channels S1, S2, and S3. , S4 drive. In this way, the number of touch channels can be greatly reduced.

For example, as shown in FIG. 3, a plurality of wires 12 are distributed in an S-shaped extension. For example, the multiple wires 12 are divided into multiple groups, and each group of wires 12 is used to connect the secondary electrodes 112 in two adjacent touch electrode combinations 11 in the same column correspondingly in series. The multiple sets of wires 12 are distributed on both sides of the multiple sub-electrodes 112 in an S-shaped extension (or serpentine extension) as a whole. It should be noted that the wire 12 is not a continuous S-shape. A single wire 12 is, for example, a straight line or a broken line with multiple segments, and multiple groups of wires 12 form an S-shaped distribution as a whole. In this way, a plurality of wires 12 can be made without crossing each other, and it is convenient to be arranged in the same layer with the touch electrode assembly 11.

Through the above arrangement and wiring, that is, the N sub-electrodes 112 of each group in the same row of the touch electrode assembly 11 are arranged in a head-to-tail-to-head manner, and the wires 12 are used to make the same row The N sub-electrodes 112 in the different touch electrode combinations 11 are respectively connected in series to form N signal paths so that the sub-electrodes 112 in the same column of the touch electrode combination 11 share N secondary touch channels. Therefore, the touch control structure 10 has a small number of touch channels, which can reduce the touch blind area caused by the channel wiring, and is also conducive to narrowing the lower frame to achieve a narrow frame. Moreover, the multiple wires 12 do not cross each other and occupy a small wiring area, which not only facilitates wiring, but also allows the touch electrode assembly 11 and the wires 12 to be arranged on the same layer to be compatible with the FSLOC manufacturing process, so that the touch structure 10Suitable for FSLOC touch screen. The touch structure 10 requires a small number of masks, which can reduce the cost and improve the process yield.

For example, as shown in FIGS. 2 and 3, the touch structure 10 further includes a plurality of main signal lines 13 and a plurality of secondary signal lines 14.

The plurality of main signal lines 13 extend along the first direction and are electrically connected to the main electrodes 111 of the plurality of touch electrode assemblies 11 respectively. For example, each main electrode 111 is connected to one main signal line 13, and the number of main electrodes 111 is equal to the number of main signal lines 13. Taking FIG. 3 as an example, the main signal line 13 electrically connected to the main electrode 111 in the first column of the touch electrode assembly 11 includes a first main signal line 131, a second main signal line 132, a third main signal line 133, and a second main signal line 133. Four main signal lines 134. The first main signal line 131 provides the first main touch channel M1 for driving the main electrode 111 in the first row of the touch electrode combination 11 (that is, the aforementioned first touch electrode combination 11a), and the second main signal line 132 The second main touch channel M2 is provided for driving the main electrodes 111 in the second row of the touch electrode combination 11 (that is, the aforementioned second touch electrode combination 11b), and the third main signal line 133 is provided for driving the third The third main touch channel M3 of the main electrode 111 in the row touch electrode assembly 11, and the fourth main signal line 134 provides a fourth main touch channel for driving the main electrode 111 in the fourth row touch electrode assembly 11 M4. For example, one end of the main signal line 13 is directly electrically connected to the corresponding main electrode 111, and the other end of the main signal line 13 is coupled to a separately provided touch driving circuit, so that the main touch channel can drive the corresponding main electrode 111.

For example, the multiple secondary signal lines 14 extend along the first direction and are divided into multiple groups, and the multiple groups of secondary signal lines 14 are respectively electrically connected to the secondary electrodes 112 in the multi-column touch electrode assembly 11. Each group of secondary signal lines 14 includes N secondary signal lines 14, and the N secondary signal lines 14 in each group of secondary signal lines 14 provide for driving the sub-electrodes 112 of the touch electrode assembly 11 located in the same column. N secondary touch channels.

Taking FIG. 3 as an example, a set of secondary signal lines 14 electrically connected to the secondary electrodes 112 in the first column of touch electrode assembly 11 includes four secondary signal lines 14, which are respectively the first secondary signal line 141 and the first secondary signal line 141. The second secondary signal line 142, the third secondary signal line 143, and the fourth secondary signal line 144. The four secondary signal lines 14 respectively provide four secondary touch channels S1, S2, S3 and S4 for driving the secondary electrodes 112 in the first column of the touch electrode assembly 11.

For example, the first secondary signal line 141 is electrically connected to the first electrode 112a in the touch electrode combination 11 in the last row of the column, because the first electrode 112a is electrically connected to the first electrode 112a in the other touch electrode combinations 11 in the column. The electrode 112a has been connected in series with a plurality of wires 12 to form a signal path. Therefore, the first secondary touch channel S1 provided by the first secondary signal line 141 can drive all the first-time electrodes 112a in the signal path. Similarly, the second secondary signal line 142 is electrically connected to the second secondary electrode 112b in the touch electrode combination 11 in the last row of the column, because the second secondary electrode 112b is electrically connected to the second secondary electrode 112b in the other touch electrode combinations 11 in the column. The secondary electrodes 112b have been connected in series by a plurality of wires 12 to form a signal path. Therefore, the second secondary touch channel S2 provided by the second secondary signal line 142 can drive all the second secondary electrodes 112b in the signal path. The third secondary signal line 143 is electrically connected to the third secondary electrode 112c in the touch electrode assembly 11 in the last row of the column, and the third secondary touch channel S3 provided by the third secondary signal line 143 can drive the corresponding signal path In all third electrodes 112c. The fourth secondary signal line 144 is electrically connected to the fourth secondary electrode 112d in the touch electrode assembly 11 in the last row of the column, and the fourth secondary touch channel S4 provided by the fourth secondary signal line 144 can drive the corresponding signal path All fourth electrodes in 112d.

It should be noted that, in the embodiment of the present disclosure, although both the secondary signal line 14 and the wire 12 are electrically connected to the secondary electrode 112, they are not the same. One end of the secondary signal line 14 is only directly electrically connected to the secondary electrode 112 in the touch electrode assembly 11 in the last row (of course, in other embodiments, it can also be directly connected to the secondary electrode 112 in the touch electrode assembly 11 in the first row. Electrical connection, which can be determined according to the wiring method), the other end of the secondary signal line 14 is coupled to a separately provided touch drive circuit. There are only N secondary signal lines 14 electrically connected to the secondary electrodes 112 of the touch electrode assembly 11 in a row. Both ends of the wire 12 are directly connected to the corresponding sub-electrodes 112 in the two adjacent touch electrode combinations 11 in the same column, so that the corresponding sub-electrodes 112 in the same column of the touch electrode combination 11 are connected in series. For example, there are (Q−1)*N wires 12 electrically connected to the secondary electrodes 112 of a column of touch electrode assemblies 11, where Q is the number of rows of the touch electrode assemblies 11 in the touch structure 10.

It should be noted that, in the embodiment of the present disclosure, the connection manner of the main signal line 13 and the secondary signal line 14 to the separately provided touch drive circuit is not limited. For example, in some examples, the touch driving circuit is disposed on the base substrate 001, for example, at the lower frame of the base substrate 001. Therefore, the main signal line 13 and the secondary signal line 14 may extend in the first direction. It is directly electrically connected to the touch drive circuit, and different main signal lines 13 and secondary signal lines 14 are electrically connected to different touch channels in the touch drive circuit. For example, in other examples, the touch drive circuit is disposed outside the base substrate 001, such as other positions of the corresponding touch device. Therefore, the main signal line 13 and the secondary signal line 14 may be on the base substrate 001. The bottom frame of 001 is electrically connected to a flexible circuit board for signal transfer, and the flexible circuit board is electrically connected to the touch drive circuit, so as to realize the coupling of the main signal line 13 and the secondary signal line 14 with the touch drive circuit. catch. Of course, the main signal line 13 and the secondary signal line 14 may also be coupled to the touch drive circuit in other applicable ways, which may be determined according to actual requirements, and the embodiment of the present disclosure does not limit this.

For example, the main electrodes 111 of the touch electrode assembly 11 located in the same row are driven by the same main touch channel, so that the number of channels can be further reduced. For example, as shown in FIG. 2, the main electrodes 111 of the touch electrode assembly 11 in the first row are all driven by the first main touch channel M1, and the main electrodes 111 of the touch electrode assembly 11 in the second row are all driven by the second main touch channel. Channel M2 is driven, and the other lines can be deduced by analogy. For example, in this embodiment, since the main signal lines 13 electrically connected to the respective main electrodes 111 are wired independently of each other, it is possible to make the main signal lines electrically connected to the main electrodes 111 in the touch electrode assembly 11 located in the same row. 13 are electrically connected to each other, for example, merged at the lower frame of the base substrate 001 to achieve electrical connection, so that the main electrodes 111 of the touch electrode assembly 11 in the same row are driven by the same main touch channel. Of course, the embodiments of the present disclosure are not limited to this. In other examples, the main electrodes 111 of the touch electrode assembly 11 located in the same row can be electrically connected to each other in each row by designing wiring, and then each row passes through a main signal line 13 Coupled with a separately provided touch drive circuit.

It should be noted that in the embodiments of the present disclosure, the main electrodes 111 of the touch electrode combinations 11 located in the same row can also be driven by different main touch channels. For example, the main electrodes 111 of each touch electrode combination 11 are driven by different The main touch channel drive of, which can be determined according to actual needs, and the embodiment of the present disclosure does not limit this.

For example, for the same touch electrode combination 11, the area of the main electrode 111 is larger than the area of the secondary electrode 112. For example, in some examples, the area of the main electrode 111 is both larger than the area of a single sub-electrode 112 and larger than the sum of the areas of the N sub-electrodes 112. For example, in some other examples, the area of the main electrode 111 is larger than the area of a single sub-electrode 112 and is equal to the sum of the areas of the N sub-electrodes 112.

For example, the shape of the main electrode 111 and the shape of the secondary electrode 112 are both rectangular or square, so that the effective touch area is distributed more uniformly, and the wires 12, the main signal line 13 and the secondary signal line 14 are easily wired. It should be noted that in the embodiments of the present disclosure, the shape of the main electrode 111 and the secondary electrode 112 can also be any applicable shapes such as a circle, a hexagon, a trapezoid, etc. The shape of the main electrode 111 can be the same as that of the secondary electrode 112. Same or different, this can be determined according to actual needs, and the embodiments of the present disclosure do not limit this.

For example, in the same touch electrode combination 11, the length of the main electrode 111 in the first direction is greater than or equal to the length of the distribution area of the N secondary electrodes 112 in the first direction. Since there are intervals between the N sub-electrodes 112, the length of the distribution area of the N sub-electrodes 112 in the first direction is greater than the sum of the lengths of the N sub-electrodes 112.

For example, the touch structure 10 is a self-capacitive touch structure, and correspondingly, the main electrode 111 and the secondary electrode 112 are both self-capacitive touch electrodes. Since it is based on the principle of self-capacitance, the touch structure 10 can avoid the problem of low grounding quality, and is helpful for realizing a large-size and folding screen. Regarding the working principle of the self-capacitive touch structure, please refer to the conventional design, which will not be described in detail here.

FIG. 4 is a schematic cross-sectional view of a touch structure provided by some embodiments of the present disclosure. For example, as shown in FIG. 4, a plurality of touch electrode combinations 11 are arranged in the same layer, that is, a plurality of main electrodes 111 and a plurality of sub-electrodes 112 are arranged in the same layer, for example, arranged on the base substrate through the same mask process. 001 up. Therefore, the touch structure 10 can be compatible with the manufacturing process of FSLOC, and the touch structure 10 can be applied to a FSLOC touch screen. Since there is only one layer of the touch electrode assembly 11, the number of masks required by the touch structure 10 is small, which can reduce the cost and improve the process yield. It should be noted that only the base substrate 001, the main electrode 111 and the sub-electrode 112 are shown in FIG. 4. Other structures and components in the touch structure 10 are not shown in FIG. Limitations of the embodiment.

In the touch structure 10 provided by the embodiment of the present disclosure, the main electrode 111 can be used for a larger range of primary touch sensing. Therefore, the area of the main electrode 111 can be designed to be larger, and the larger area can reduce the number of electrodes. The number of touch channels occupied by the main electrode 111 is small. The secondary electrode 112 is used for secondary touch sensing in a fine area. In order to ensure accuracy, the area of the secondary electrode 112 is designed to be small and the number of secondary electrodes 112 is large. However, no matter if the touch structure 10 is in the first direction ( For example, how long the size in the column direction is, the secondary electrodes 112 in the same column of the touch electrode assembly 11 only use N (for example, 4) secondary touch channels, thereby greatly reducing the number of touch channels. Therefore, the touch structure 10 can solve the problem of the huge number of design channels of the conventional FSLOC touch screen.

For example, a 6.53-inch FSLOC touch screen adopting the touch structure shown in FIG. 1 usually requires 352 touch channels, and channel wiring causes many touch blind areas. However, the 6.53-inch FSLOC touch screen adopting the touch structure 10 provided by the embodiments of the present disclosure only needs 70-80 touch channels, and the number of channels is greatly reduced compared with the conventional FSLOC touch screen, and the fewer channels reduce the channel wiring. The generated touch blind area is also conducive to achieving a narrow frame, for example, it is conducive to narrowing the lower frame.

It should be noted that in the embodiments of the present disclosure, the touch structure 10 may further include more components to achieve more comprehensive functions. For example, the touch structure 10 may also include a touch drive circuit, a packaging structure, etc., which may be determined according to actual requirements, which are not limited in the embodiments of the present disclosure.

FIG. 5 is a schematic diagram of a touch detection method of a touch structure provided by some embodiments of the present disclosure. The working principle of the touch structure 10 provided by the embodiment of the present disclosure will be briefly described below with reference to FIG. 5.

For example, the touch structure 10 adopts the principle of self-capacitance touch. When the user's finger touches the touch screen including the touch structure 10, the electrodes at the touched position (for example, the main electrode 111 and/or the secondary electrode 112) are coupled due to the proximity of the finger, so that the self-capacitance increases, and the capacitance signal change is detected. And by processing and calculating it, the position of the touch report point (that is, the touch position) can be obtained. For example, a separately provided touch drive circuit can be used to realize signal detection, processing, and calculation. The touch drive circuit is, for example, a touch integrated circuit chip (IC).

For example, the main electrode 111 has a larger area and a larger sensing range, and is mainly used to sense the approximate area touched by a finger, that is, the main electrode 111 can perform a first-level touch sensing to sense where the touch report point is. A main electrode 111 is located near the area. Under the premise of sensing that there is a touch near the area where a certain main electrode 111 is located, the secondary electrode 112 realizes precise position sensing, that is, realizes secondary touch sensing. The area of the secondary electrodes 112 is relatively small and the number is relatively large. The vicinity of a region where one primary electrode 111 is located corresponds to at least four different secondary electrodes 112. The difference in the distance between the position of the touch report point and the respective main electrode 111 and the sub-electrode 112 will produce a difference in the amount of self-capacity signal. Combined with the touch report point algorithm, the position of the touch report point can be obtained. For example, the touch report algorithm may be a common center of gravity algorithm, a weighting algorithm, or any other applicable algorithm, which is not limited in the embodiments of the present disclosure.

For example, as shown in FIG. 5, when the user's finger touches the four positions P1, P2, P3, and P4 on the touch screen including the touch structure 10, the method of calculating the position of the touch report point using the weighting algorithm is specific as follows.

When the finger touches the position P1, the main touch channel M3 and the secondary touch channels S6 and S7 produce obvious changes in the amount of self-capacitance signals. According to the change of the self-capacity signal volume, the weighting algorithm can be used to determine each weight, for example, M3: 80%, S6: 20%, S7: 25%. The touch driving circuit performs algorithm calculation to obtain the touch report point position corresponding to P1.

It should be noted that although the main touch channel M3 corresponds to the multiple main electrodes 111 in a row of the touch electrode assembly 11, the secondary touch channels S6 and S7 correspond to the multiple secondary electrodes 112 in the touch electrode assembly 11 in a row. However, the number of rows corresponding to the primary touch channel M3 can be used to determine which secondary touch channels S6 and S7 correspond to which two secondary electrodes 112 in the column, and the secondary touch channels S6 and S7 corresponding to the The number of columns can determine which main electrode 111 in the row the main touch channel M3 corresponds to, so that the main electrode 111 corresponding to the main touch channel M3 and the secondary touch channel S6 in this touch detection can be uniquely determined. The secondary electrode 112 corresponding to S7 can obtain an accurate touch report point position.

When the finger touches the position P2, the main touch channel M2 and the secondary touch channels S10, S11, and S12 produce obvious changes in the amount of self-capacitance signals. According to the change of the self-capacity signal volume, the weighting algorithm can be used to determine each weight, for example, M2: 30%, S10: 30%, S11: 90%, S12: 40%. The touch control driving circuit performs algorithm calculation to obtain the touch report point position corresponding to P2.

It should be noted that the number of rows corresponding to the primary touch channel M2 can be used to determine which three secondary electrodes 112 in the column correspond to the secondary touch channels S10, S11, and S12, and the secondary touch channels are used at the same time. The number of columns corresponding to S10, S11 and S12 can determine which main electrode 111 in the row the main touch channel M2 corresponds to, so that the main electrode 111 corresponding to the main touch channel M2 in this touch detection can be uniquely determined. And the secondary electrodes 112 corresponding to the secondary touch channels S10, S11, and S12.

When the finger touches the position P3, the main touch channels M3 and M4 and the secondary touch channel S16 produce more obvious changes in the amount of self-capacitance signals. According to the change of the self-capacity signal volume, the weighting algorithm can be used to determine each weight, for example, M3: 20%, M4: 20%, and S16: 80%. The touch drive circuit performs algorithm calculation to obtain the touch report point position corresponding to P3.

It should be noted that the number of rows corresponding to the primary touch channels M3 and M4 can be used to determine which secondary electrode 112 in the column corresponds to the secondary touch channel S16 (this time is driven by the secondary touch channel S16 and located at The two secondary electrodes 112 near the position P3 are adjacent, so determining any one of them as the corresponding secondary electrode 112 will not affect the calculation result), and the number of columns corresponding to the secondary touch channel S16 can be used to determine the primary touch Channels M3 and M4 correspond to which main electrode 111 in the respective row, so that the main electrode 111 corresponding to the main touch channel M3 and M4 and the secondary electrode corresponding to the secondary touch channel S16 in this touch detection can be uniquely determined 112.

When the finger touches the position P4, the main touch channel M2 produces a more obvious change in the amount of self-capacitance signal, and the secondary touch channels S18, S19, S22, and S23 produce a slight change in the amount of self-capacitance signal. According to the change of the self-capacity signal volume, the weighting algorithm can be used to determine each weight, for example, M2: 95%, S18: 6%, S19: 7%, S22: 8%, S23: 9%. The touch drive circuit performs algorithm calculations to obtain the touch report point position corresponding to P4. Here, when the finger touches the position P4, although the finger does not cover the secondary electrode 112 corresponding to the secondary touch channels S18, S19, S22, and S23, the corresponding secondary electrode 112 will also produce a change in the amount of self-capacitance signal, only the amount of change It's only small. Therefore, the finger does not need to be covered on the electrode to produce a change in the self-capacitance signal. When the finger is close to the electrode, the change in the self-capacitance signal is also generated.

It should be noted that the number of rows corresponding to the primary touch channel M2 can be used to determine which secondary touch channels S18, S19, S22, and S23 correspond to which secondary electrodes 112 in the corresponding columns, and at the same time, according to the secondary touch channel S18 The number of columns corresponding to, S19, S22, and S23 and their slight changes can determine that the main electrode 111 corresponding to the main touch channel M2 is located between the two rows of secondary electrodes 112, so that it can be uniquely determined that the touch detection is in progress. The main electrode 111 corresponding to the main touch channel M2 and the secondary electrode 112 corresponding to the secondary touch channels S18, S19, S22, and S23.

For example, before calculating the position of the touch report point based on the change of the self-capacity signal amount, any applicable method may be used to obtain the change of the self-capacity signal amount of each primary touch channel and the secondary touch channel.

For example, in some examples, the main sensing signals of all the main electrodes 111 in the touch structure 10 are first detected, that is, the main sensing signals of all the main touch channels are detected, and the touch area is determined according to the main sensing signals. For example, when the main electrodes 111 of the touch electrode combination 11 located in the same row are driven by the same main touch channel, the aforementioned touch area may be the area where the touch electrode combination 11 of a certain row is located. For another example, when the main electrodes 111 of the touch electrode combination 11 located in the same row are driven by different main touch channels, the aforementioned touch area may be the area where a certain touch electrode combination 11 is located. Thus, the first-level touch sensing is completed.

Then, the secondary sensing signal of the secondary electrode 112 located in the touch area is detected, that is, the secondary sensing signal of the secondary touch channel corresponding to the touch area is detected. For example, when the touch area is the area where a certain row of the touch electrode assembly 11 is located, the secondary sensing signals of all secondary touch channels need to be detected. For another example, when the touch area is the area where a certain touch electrode combination 11 is located, the secondary sensing signals of the N secondary touch channels corresponding to the touch electrode combination 11 need to be detected. Thus, the secondary touch sensing is completed.

Finally, based on the primary sensing signal of the primary electrode 111 and the secondary sensing signal of the secondary electrode 112, the touch position is determined. Here, the sensing signal of the main electrode 111 is called the primary sensing signal, and the sensing signal of the secondary electrode 112 is called the secondary sensing signal. Both the primary sensing signal and the secondary sensing signal are the signals detected by the corresponding touch channel. They can be the same type of signal.

Through the above method, the number of signals that need to be detected in each touch detection can be reduced, and the amount of calculations can be reduced.

For example, in other examples, the primary sensing signals of all the primary electrodes 111 and the secondary sensing signals of all the secondary electrodes 112 in the touch structure 10 are first detected. For example, simultaneous detection or sequential detection can be performed. Then, based on the primary sensing signal and the secondary sensing signal, the touch position is determined. This method is simple to operate, compatible with the usual self-capacitance touch detection method, and is convenient for algorithm transplantation.

At least one embodiment of the present disclosure further provides a touch panel, including the touch structure provided by any embodiment of the present disclosure. The touch panel has a small number of touch channels, which reduces touch blind areas caused by channel wiring, is conducive to achieving a narrow frame, and requires a small number of masks, which can reduce costs and improve process yields, and can avoid low grounding Quality issues help to achieve large-size and folding screens.

FIG. 6 is a schematic block diagram of a touch panel provided by some embodiments of the present disclosure. For example, as shown in FIG. 6, the touch panel 20 includes a touch structure 21. The touch structure 21 is a touch structure provided by any embodiment of the present disclosure, such as the touch structure 10 shown in FIGS. 2 to 5. For example, the touch panel 20 may be a touch display panel, such as a liquid crystal touch display panel, an Organic Light-Emitting Diode (OLED) touch display panel, and a Quantum Dot Light Emitting Diode (QLED) The touch display panel, etc., may also be a touch panel that does not have a display function. The touch panel 20 can be applied to any products or components with touch functions such as mobile phones, tablet computers, notebook computers, e-books, game consoles, displays, digital photo frames, navigators, and the like.

FIG. 7 is a schematic cross-sectional view of another touch panel provided by some embodiments of the present disclosure. For example, as shown in FIG. 7, in addition to the touch structure 21, the touch panel 20 further includes a display structure 22, and the display structure 22 is configured to display. For example, the touch structure 21 and the display structure 22 are stacked.

For example, the touch structure 21 and the display structure 22 can form an on-cell structure. In this case, the display structure 22 can be a common display panel, such as a liquid crystal display panel, an OLED display panel, or a QLED display panel. In this structure, the display structure 22 may include, for example, an array substrate and a counter substrate disposed opposite to the array substrate, and the two are combined with each other to form a space for accommodating liquid crystal materials or OLED devices, for example. The touch structure 21 is formed directly on the counter substrate, for example, and the counter substrate of the display structure 22 is used as the aforementioned base substrate 001 at this time.

For another example, the touch structure 21 and the display structure 22 may form an in-cell structure, and in this case, the display structure 22 may be an array substrate. For example, an electroluminescent material or a liquid crystal layer is provided on the array substrate. In this structure, the array substrate serves as the aforementioned base substrate 001, and each touch electrode assembly 11 in the touch structure 21 is disposed on the array substrate. Of course, the array substrate may also include multiple functional film layers, which can be determined according to actual requirements.

It should be noted that in the embodiments of the present disclosure, the touch panel 20 may also include more components and structures, for example, it may also include an array substrate gate drive (Gate Driver On Array, GOA) circuit, which can be based on actual requirements. Rather, the embodiments of the present disclosure do not limit this. For the detailed description and technical effects of the touch panel 20, reference may be made to the above description of the touch structure 10, which will not be repeated here.

At least one embodiment of the present disclosure further provides a touch driving method, which is used to drive the touch structure provided by any embodiment of the present disclosure. Using the touch driving method can reduce the number of touch channels, reduce the touch blind areas caused by channel wiring, help realize a narrow frame, and can avoid the problem of low grounding quality, and help realize large-size and folding screens.

For example, in some embodiments, the touch driving method includes the following operations:

Step S30: Detect the primary sensing signal of the primary electrode 111 and the secondary sensing signal of the secondary electrode 112 respectively, and determine the touch position based on the primary sensing signal and the secondary sensing signal.

For example, in step S30, the touch driving circuit may be used to detect the sensing signals of the primary touch channel corresponding to the main electrode 111 and the secondary touch channel corresponding to the secondary electrode 112, so as to obtain the primary sensing signal and the secondary sensing signal . For example, the touch report point algorithm can be used to obtain the touch report point position. For example, the touch report algorithm may be a common center of gravity algorithm, a weighting algorithm, or any other applicable algorithm, which is not limited in the embodiments of the present disclosure.

For example, in some examples, as shown in FIG. 8, the foregoing step S30 may include the following operations:

Step S31: Detect the main sensing signals of all the main electrodes 111 in the touch structure 10, and determine the touch area according to the main sensing signals of the main electrodes 111;

Step S32: detecting the secondary sensing signal of the secondary electrode 112 located in the touch area;

Step S33: Determine the touch position based on the primary sensing signal of the primary electrode 111 and the secondary sensing signal of the secondary electrode 112.

For example, in other examples, as shown in FIG. 9, the foregoing step S30 may also include the following operations:

Step S34: detecting the primary sensing signals of all the primary electrodes 111 and the secondary sensing signals of all the secondary electrodes 112 in the touch structure 10;

Step S35: Determine the touch position based on the primary sensing signal and the secondary sensing signal.

For the detailed description of the above steps S30-S35, reference may be made to the above description of FIG. 5, which will not be repeated here.

It should be noted that in the embodiments of the present disclosure, the touch driving method may further include more steps, and these steps may be executed sequentially or in parallel. Although the touch driving method described above includes multiple steps appearing in a specific order, it should be clearly understood that the order of the multiple steps is not limited. For the detailed description and technical effects of the touch driving method, reference may be made to the above description of the touch structure 10, which will not be repeated here.

The following points need to be explained:

(1) The drawings of the embodiments of the present disclosure only refer to the structures involved in the embodiments of the present disclosure, and other structures can refer to the usual design.

(2) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A touch structure includes a plurality of touch electrode combinations, wherein the plurality of touch electrode combinations are arranged in an array,

At least part of the touch electrode combinations in the plurality of touch electrode combinations include a main electrode and a set of N sub-electrodes, the N sub-electrodes are arranged side by side in a first direction, and the N sub-electrodes are connected to the The main electrodes are arranged side by side in a second direction, and the first direction and the second direction intersect,

The N secondary electrodes of the touch electrode combination are respectively driven by N secondary touch channels, and the main electrodes are driven by the primary touch channels, and N is an integer greater than one.
The touch structure of claim 1, wherein the main electrodes of the multiple touch electrode combinations located in the same column are located in the same column and are driven by different main touch channels, and the multiple touch electrode combinations located in the same column The multiple groups of N secondary electrodes are located in the same column, and are driven by the same N secondary touch channels respectively.
3. The touch structure of claim 2, wherein the multiple secondary touch channels used to drive the secondary electrodes of the touch electrode combinations of different columns are different.
The touch structure according to claim 2, further comprising a plurality of wires,

Wherein, the plurality of wires connect the N sub-electrodes in different touch electrode combinations located in the same column in series respectively to obtain N mutually insulated signal paths, and the N mutually insulated signal paths are respectively connected to the The N secondary touch channels are electrically connected.
The touch structure according to claim 4, wherein two adjacent touch electrode combinations in the same column include a first touch electrode combination and a second touch electrode combination, and the first touch electrode combination is The N sub-electrodes are electrically connected to the N sub-electrodes of the second touch electrode combination, and the N sub-electrodes of the first touch electrode combination and the N sub-electrodes of the second touch electrode combination They are arranged in the reverse order along the first direction.
The touch structure according to claim 5, wherein each touch electrode combination in the at least part of the touch electrode combination includes 4 sub-electrodes, and the 4 sub-electrodes include the first sub-touch channel. The first electrode driven, the second electrode driven by the second secondary touch channel, the third electrode driven by the third secondary touch channel, and the fourth electrode driven by the fourth secondary touch channel electrode,

The sub-electrodes of the first touch electrode combination are arranged in the first direction in the order of the first electrode-the second electrode-the third electrode-the fourth electrode, and the second touch electrode combination is The secondary electrodes are arranged along the first direction in the order of the fourth time electrode-the third time electrode-the second time electrode-the first time electrode.
4. The touch structure of claim 4, wherein the plurality of conductive lines are distributed in an S-shaped extension.
The touch structure according to claim 1 or 2, wherein the main electrodes of the touch electrode combination located in the same row are driven by the same main touch channel.
8. The touch structure according to any one of claims 1-8, wherein for the same touch electrode combination, the area of the primary electrode is larger than the area of the secondary electrode.
The touch structure according to any one of claims 1-9, further comprising a plurality of main signal lines and a plurality of secondary signal lines,

The plurality of main signal lines extend along the first direction and are electrically connected to the main electrodes in the plurality of touch electrode combinations, respectively,

The multiple secondary signal lines extend along the first direction and are divided into multiple groups. The multiple sets of secondary signal lines are respectively electrically connected to the secondary electrodes in the multi-column touch electrode combination, and each group of secondary signal lines includes N There are two secondary signal lines, and the N secondary signal lines in each group of secondary signal lines provide N secondary touch channels for driving the secondary electrodes of the touch electrode combination in the same column.
10. The touch structure of claim 10, wherein the main signal lines electrically connected to the main electrodes in the touch electrode combination located in the same row are electrically connected to each other.
The touch structure according to any one of claims 1-11, wherein the shape of the main electrode and the shape of the secondary electrode are both rectangular or square.
The touch structure according to any one of claims 1-12, wherein, in the same touch electrode combination, the length of the primary electrode in the first direction is greater than or equal to the distribution area of the N secondary electrodes The length in the first direction.
The touch structure according to any one of claims 1-13, wherein the touch structure is a self-capacitive touch structure, and the primary electrode and the secondary electrode are both self-capacitance touch electrodes.
The touch structure according to any one of claims 1-14, wherein the multiple touch electrode combinations are arranged in the same layer.
A touch panel, comprising the touch structure according to any one of claims 1-15.
16. The touch panel of claim 16, further comprising a display structure, wherein the touch structure and the display structure are stacked.
A touch driving method for the touch structure according to any one of claims 1-15, comprising:

The primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode are respectively detected, and the touch position is determined based on the primary sensing signal and the secondary sensing signal.
18. The touch driving method of claim 18, wherein the detection of the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode is based on the primary sensing signal and the secondary sensing signal. The sensing signal to determine the touch position includes:

Detecting the main sensing signals of all the main electrodes in the touch structure, and determining the touch area according to the main sensing signals of the main electrodes;

Detecting the secondary sensing signal of the secondary electrode located in the touch area;

The touch position is determined based on the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode.
18. The touch driving method of claim 18, wherein the detection of the primary sensing signal of the primary electrode and the secondary sensing signal of the secondary electrode is based on the primary sensing signal and the secondary sensing signal. The sensing signal to determine the touch position includes:

Detecting primary sensing signals of all primary electrodes and secondary sensing signals of all secondary electrodes in the touch control structure;

The touch position is determined based on the primary sensing signal and the secondary sensing signal.