WO2021184209A1 - Touch control positioning method and apparatus - Google Patents

Abstract

Embodiments of the present disclosure provide a touch control positioning method and an apparatus, the touch control positioning method comprising: obtaining location coordinates and a touch control capacitance value for each touch control electrode within a touch control region; with three touch control electrodes in the touch control region serving as an electrode group, forming triangles via sequentially connecting lines between the centers of the touch control electrodes in each electrode group, wherein no two triangles overlap; with respect to each triangle, determining coordinates of a center of mass of the triangle according to the touch control capacitance values and the location coordinates of the touch control electrodes corresponding to the triangle; and determining target touch control coordinates according to the coordinates of the centers of mass of all of the triangles.

Description

Touch positioning method and device Technical field

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

Background technique

With the development of touch technology, touch screens with touch functions are widely used in various display products such as mobile phones, tablet computers, and information inquiry machines in public halls as an information input tool. In this way, the user only needs to touch the touch screen with a finger or a stylus to realize the operation of the electronic device, eliminating the user's dependence on other devices (such as keyboard and mouse, etc.), making human-computer interaction easier . However, how to improve the touch accuracy is a technical problem to be solved urgently by those skilled in the art.

Summary of the invention

The touch positioning method provided by the embodiments of the present disclosure includes:

Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area;

Taking the three touch electrodes in the touch area as an electrode group, the centers of the touch electrodes in each of the electrode groups are sequentially connected to form a triangle; wherein any two of the triangles do not overlap;

For each of the triangles, determine the centroid coordinates of the triangle according to the touch capacitance value and the position coordinates of the touch electrode corresponding to the triangle;

According to the centroid coordinates of all the triangles, the target touch coordinates are determined.

Optionally, in the embodiment of the present disclosure, the determining the centroid coordinates of the triangle may specifically include the following steps:

Determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle;

Determine the centroid coordinates of the triangle according to the first weight and position coordinates of the touch electrode corresponding to the triangle.

Optionally, in the embodiment of the present disclosure, the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the first type of touch electrode and the touch electrode The touch electrodes of the second type have different areas;

The electrode group includes M first electrode groups; wherein, in the first electrode group, both the first touch electrode and the second touch electrode serve as the first type of touch electrode, and the third touch electrode The control electrode is used as the second type of touch electrode; M is an integer greater than or equal to 1;

The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the m-th first electrode group, using the following formula, according to the The touch capacitance value of the first type touch electrode of the m-th first electrode group determines the first weight of each first type touch electrode in the m-th first electrode group;

Wherein, 1≤m≤M, and m is an integer, ω _1m-11 represents the first weight of the first touch electrode in the m-th first electrode group, and ω _1m-12 represents the m-th The first weight of the second touch electrode in the first electrode group, C _1m-11 represents the touch capacitance value of the first touch electrode in the m-th first electrode group, C _{1m -12} represents the touch capacitance value of the second touch electrode in the m-th first electrode group.

Optionally, in the embodiment of the present disclosure, in the m-th first electrode group, the first weight ω _1m-13 of the third touch electrode is

Optionally, in the embodiment of the present disclosure, the following formula is used, according to the first weight corresponding to the m-th first electrode group, and the position of the first touch electrode in the m-th first electrode group The coordinates (x _1m-11 , y _1m-11 ), the position coordinates of the second touch electrode (x _1m-12 , y _1m-12 ), and the position coordinates of the third touch electrode (x _1m-13 , y _{1m-13 ), determine the centroid coordinates (x m-1} , y _m-1 ) of the triangle corresponding to the m-th first electrode group:

x _m-1 =ω _1m-11 *x _1m-11 +ω _1m-12 *x _1m-12 +ω _1m-13 *x _1m-13 ;

y _m-1 =ω _1m-11 *y _1m-11 +ω _1m-12 *y _1m-12 +ω _1m-13 *y _1m-13 .

Optionally, in the embodiment of the present disclosure, the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the first type of touch electrode and the touch electrode The touch electrodes of the second type have different areas;

The electrode group includes N second electrode groups; wherein, in the second electrode group, both the first touch electrode and the second touch electrode serve as the second type of touch electrodes, and the third touch electrode The control electrode serves as the first type of touch electrode; N is an integer greater than or equal to 1;

The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the nth second electrode group, using the following formula, according to the The touch capacitance value of the second type touch electrode of the nth second electrode group determines the first weight of each second type touch electrode in the nth second electrode group;

Wherein, 1≤n≤N, and n is an integer, ω _1n-21 represents the first weight of the first touch electrode in the nth second electrode group, and ω _1n-22 represents the nth The first weight of the second touch electrode in the second electrode group, C _1n-21 represents the touch capacitance value of the first touch electrode in the nth second electrode group, C _{1n -22} represents the touch capacitance value of the second touch electrode in the nth second electrode group.

Optionally, in the embodiment of the present disclosure, in the nth second electrode group, the first weight ω _1n-23 of the third touch electrode is

Optionally, in the embodiment of the present disclosure, the following formula is used, according to the first weight corresponding to the nth second electrode group, and the position of the first touch electrode in the nth second electrode group The coordinates (x _1n-21 , y _1n-21 ), the position coordinates of the second touch electrode (x _1n-22 , y _1n-22 ), and the position coordinates of the third touch electrode (x _1n-23 , y _{1n-23 ), determine the centroid coordinates (x n-2} , y _n-2 ) of the triangle corresponding to the n-th second electrode group:

x _n-2 =ω _1n-21 *x _1n-21 +ω _1n-22 *x _1n-22 +ω _1n-23 *x _1n-23 ;

y _n-2 =ω _1n-21 *y _1n-21 +ω _1n-22 *y _1n-22 +ω _1n-23 *y _1n-23 .

Optionally, in the embodiment of the present disclosure, the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the first type of touch electrode and the touch electrode The touch electrodes of the second type have different areas;

The electrode group includes K third electrode groups; wherein, in the third electrode group, the first touch electrode, the second touch electrode, and the third touch electrode are all used as the first type of touch electrode. Control electrode or the second type touch electrode; K is an integer greater than or equal to 1;

The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the kth third electrode group, using the following formula, according to the The touch capacitance value of each touch electrode in the kth third electrode group determines the first weight of each touch electrode in the kth third electrode group;

Wherein, 1≤k≤K, and k is an integer, ω _1k-31 represents the first weight of the first touch electrode in the kth third electrode group, and ω _1k-32 represents the kth The first weight of the second touch electrode in the third electrode group, ω _1k-33 represents the first weight of the third touch electrode in the kth third electrode group, C _{1k- 31} represents the touch capacitance value of the first touch electrode in the kth third electrode group, and C _1k-32 represents the value of the second touch electrode in the kth third electrode group Touch capacitance value, C _1k-33 represents the touch capacitance value of the third touch electrode in the kth third electrode group.

Optionally, in the embodiment of the present disclosure, the following formula is used, according to the first weight corresponding to the kth third electrode group, and the position of the first touch electrode in the kth third electrode group The coordinates (x _1k-31 , y _1k-31 ), the position coordinates of the second touch electrode (x _1k-32 , y _1k-32 ), and the position coordinates of the third touch electrode (x _1k-33 , y _{1k-33 ), determine the centroid coordinates (x k-3} , y _k-3 ) of the triangle corresponding to the k-th second electrode group:

x _k-3 =ω _1k-31 *x _1k-31 +ω _1k-32 *x _1k-32 +ω _1k-33 *x _1k-33 ;

y _k-3 =ω _1k-31 *y _1k-31 +ω _1k-32 *y _1k-32 +ω _1k-33 *y _1k-33 .

Optionally, in the embodiment of the present disclosure, the target touch coordinates (x ₀₁ , y ₀₁ ) are determined according to the centroid coordinates of all the triangles: where x ₀₁ is the abscissa of the centroid coordinates of all the triangles The average value of y ₀₁ is the average value of the ordinates in the centroid coordinates of all the triangles.

Optionally, in the embodiment of the present disclosure, the determining the target touch coordinates according to the centroid coordinates of all the triangles specifically includes:

For each of the triangles, determine the second weight corresponding to the triangle according to the touch capacitance values of all touch electrodes corresponding to the triangle;

The target touch coordinate is determined according to the centroid coordinates of all the triangles and their corresponding second weights.

Optionally, in the embodiment of the present disclosure, for the qth triangle, the following formula is used to determine the qth triangle corresponding to the qth triangle according to the touch capacitance values of all touch electrodes corresponding to the qth triangle Two weights ω _2-q ;

Wherein, Q represents the total number of triangles, and C _q represents the sum of touch capacitance values of all touch electrodes corresponding to the qth triangle.

Optionally, in the embodiment of the present disclosure, the following formula is adopted to determine the target touch coordinates (x ₀₂ , y ₀₂ ) according to the centroid coordinates of all the triangles and their corresponding second weights;

Wherein, x _4-q represents the abscissa in the centroid coordinates of the qth triangle, and y _4-q represents the ordinate in the centroid coordinates of the qth triangle.

The touch positioning device also provided in the embodiments of the present disclosure includes:

The capacitance value determination circuit is configured to obtain the position coordinates and the touch capacitance value of each touch electrode in the touch area; wherein the touch capacitance value is the capacitance value between the touch body and the touch electrode ；

The triangle determination circuit is configured to take the three touch electrodes in the touch area as an electrode group, and sequentially connect the centers of the touch electrodes in each electrode group into a triangle; wherein, any two The triangles do not overlap;

The centroid coordinate determination circuit is configured to determine the centroid coordinates of the triangle according to the touch capacitance value and position coordinates of the touch electrode corresponding to the triangle for each of the triangles;

The touch coordinate determination circuit is configured to determine the target touch coordinate according to the centroid coordinates of all the triangles.

A computer-readable storage medium is also provided in the embodiments of the present disclosure, and a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the touch positioning method described above are realized.

The computer device further provided in the embodiments of the present disclosure includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the steps of the touch positioning method when the computer program is executed. .

Description of the drawings

FIG. 1 is a schematic structural diagram of a touch screen in an embodiment of the disclosure;

2 is a flowchart of some touch positioning methods in the embodiments of the disclosure;

FIG. 3 is a schematic diagram of the structure of an equivalent plate capacitor of a touch electrode and a finger in an embodiment of the disclosure;

4 is a schematic diagram of some structures of the touch screen in an embodiment of the disclosure when a finger is touched;

FIG. 5 is a schematic diagram of some structures of the AA area in FIG. 4;

FIG. 6 is a schematic diagram of other structures of the touch screen in the embodiments of the disclosure when a finger is touched;

FIG. 7 is a schematic diagram of some structures of the AA area in FIG. 6;

FIG. 8 is a schematic diagram of other structures of the AA area in FIG. 4;

FIG. 9 is a flowchart of still other touch positioning methods in the embodiments of the disclosure;

FIG. 10 is a schematic structural diagram of some devices for determining touch positions in the embodiments of the 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. And if there is no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. 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. "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.

It should be noted that the size and shape of each figure in the drawings do not reflect the true ratio, and the purpose is only to illustrate the present disclosure. And the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions.

In practical applications, the mutual capacitance technology can be used to enable the touch screen to use the mutual capacitance technology to realize the touch function. The self-capacitance technology can also be used to enable the touch screen to implement the touch function using self-capacitance technology. It is also possible to use 3D touch capacitive technology, so that the touch screen adopts 3D touch capacitive technology to realize the touch function.

As shown in Figure 1, it illustrates a touch screen that uses mutual capacitance technology to achieve a touch function. The touch screen may include a substrate 100 and a plurality of first touch electrode rows 110 and a plurality of second touch electrode rows 120 on the substrate 100. Wherein, the second touch electrode rows 120 and the first touch electrode rows 110 are alternately arranged along the second direction F2. Exemplarily, the second touch electrode column 120 may include a plurality of second touch electrodes 121 arranged at intervals, and in the same second touch electrode column 120, each second touch electrode 121 extends along the first direction F1. Aligned along the first direction F1. The first touch electrode column 110 may include a plurality of first touch electrodes 111 arranged at intervals, and in the same first touch electrode column 110, each first touch electrode 111 extends along the second direction F2 and along the first direction. F1 arrangement. Moreover, for each adjacent second touch electrode row 120 and first touch electrode row 110, one second touch electrode 121 corresponds to a plurality of first touch electrodes 111. For example, FIG. 1 illustrates that one second touch electrode 121 corresponds to four first touch electrodes 111. In practical applications, the area of the second touch electrode 121 can be made larger than the area of the first touch electrode 111. Alternatively, the area of the second touch electrode 121 may be substantially equal to the area of the first touch electrode 111.

Moreover, it should be noted that the touch screen is further provided with a driving circuit, and is electrically connected to the driving circuit with a plurality of first transmission lines and a plurality of second transmission lines. Wherein, one second touch electrode 121 is electrically connected to a second transmission line, so as to realize signal transmission between the driving circuit and the second touch electrode 121 through the second transmission line. In addition, one first touch electrode 111 is electrically connected to a first transmission line, so as to realize signal transmission between the driving circuit and the first touch electrode 111 through the first transmission line.

The touch positioning method provided by the embodiments of the present disclosure, as shown in FIG. 2, may include the following steps:

S10. Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area; where the touch capacitance value is the capacitance value between the touch electrode and the ground;

S20. Taking the three touch electrodes in the touch area as one electrode group, and sequentially connect the centers of the touch electrodes in each electrode group into a triangle; wherein, any two triangles do not overlap;

S30. For each triangle, determine the centroid coordinates of the triangle according to the touch capacitance value and position coordinates of the touch electrode corresponding to the triangle;

S40. Determine the target touch coordinates according to the centroid coordinates of all triangles.

The above-mentioned touch positioning method provided by the embodiments of the present disclosure obtains the position coordinates and touch capacitance value of each touch electrode in the touch area, and sets three touch electrodes in the touch area as an electrode group. And the centers of the touch electrodes in each electrode group are sequentially connected to form a triangle. Since any two triangles do not overlap, duplicate triangles can be avoided. Afterwards, for each triangle, the centroid coordinates of the triangle can be determined according to the touch capacitance value and position coordinates of the touch electrode corresponding to the triangle. Thus, the target touch coordinates can be determined according to the centroid coordinates of all triangles. Therefore, in the embodiments of the present disclosure, by dividing the touch electrodes in the touch area into triangles, the centroid coordinates of the triangle can be determined according to the touch capacitance value and the position coordinates of the touch electrodes corresponding to the triangle, so that the center of mass coordinates of the triangle can be determined. According to the centroid coordinates of all triangles, the target touch coordinates with higher touch accuracy are determined to improve the touch accuracy.

It should be noted that any two triangles do not overlap, which means that any two triangles share at most two vertices. In other words, the vertices of any two triangles are not exactly the same.

It should be noted that the position coordinates of each touch electrode in the touch area can be obtained by detecting the touch electrode of each touch electrode in the touch area. For example, a method in the related art may be used to determine the position coordinates of each touch electrode in the touch area.

Generally, a finger is used to touch the touch screen for touch operation. Exemplarily, the touch main body in the embodiment of the present disclosure may be configured as a finger. Of course, in practical applications, the touch main body can also be set as other objects that can perform touch operations, which is not limited here.

In practical applications, taking the touch subject as the finger as an example, when the finger touches the touch screen, the finger will contact the touch screen, and the area where the finger contacts the touch screen can be used as the touch area in the embodiment of the present disclosure. . As shown in FIG. 4, CB represents the touch area formed when a finger touches the touch screen. Of course, the present disclosure includes but is not limited to this.

In practical applications, an equivalent plate capacitor is formed between the touch electrode and the ground. As shown in FIG. 3, one electrode CK in the plate capacitor is the touch electrode, and the other electrode SZ is the ground. When a conductive touch body is used to touch the touch screen, a capacitor is connected in parallel with the tablet capacitor, so that the total capacitance on the tablet capacitor is changed. Taking the touch body as the finger FZ as an example, when the finger touches the touch screen, the finger and the touch electrode will also form a capacitance, and the capacitance formed by the finger and the touch electrode is connected in parallel to the above-mentioned tablet capacitor. Therefore, by detecting the capacitance formed by each touch electrode and the ground and the capacitance formed by the touch electrode and the finger in parallel in the touch area where the finger is located, the detected capacitance value can be used as the touch subject The value of the touch capacitance between the touch electrode and the touch electrode.

And, according to the calculation formula of the capacitance value of the plate capacitor C=εS/d, where ε represents the dielectric constant between the two electrodes of the plate capacitor, S represents the facing area between the two electrodes of the plate capacitor, and d represents the plate The distance between the two electrodes of a capacitor. In practical applications, when the finger touches the touch screen, the distance between the finger and the touch electrode can be regarded as approximately the same. Therefore, if the area of the touch electrode is different, the detected touch electrode and the finger are equivalent The capacitance value of the resulting plate capacitor will be different. For example, the area of the second touch electrode 121 in FIG. 1 is larger than the area of the first touch electrode 111, so that the capacitance value of the plate capacitor equivalent to the second touch electrode 121 and the finger is the same as that of the first touch electrode. The capacitance value of the plate capacitor equivalent to the electrode 111 and the finger is different.

In specific implementation, the touch electrodes in the embodiments of the present disclosure may be electrodes that use mutual capacitance technology to achieve a touch function. Further, the touch screen is an in-cell display touch screen, that is, the touch screen can also realize a display function. In this way, the mutual capacitance technology can be combined with the display technology, so that the display panel adopts the mutual capacitance technology to realize the touch function.

In specific implementation, in the embodiment of the present disclosure, determining the centroid coordinates of the triangle may specifically include the following steps:

Determine the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle;

According to the first weight and position coordinates of the touch electrode corresponding to the triangle, the centroid coordinates of the triangle are determined.

Exemplarily, for each triangle, by first determining the first weight of the touch electrode corresponding to these triangles, the centroid coordinates of these triangles can be determined according to the touch electrode and position coordinates corresponding to these triangles, and then according to the triangle's The centroid determines the target touch position. In this way, by splitting the touch electrodes into triangles, and determining the positioning method of the triangle centroid coordinates by weighting, the accuracy of touch control can be improved. In particular, the problem of low touch accuracy caused by the different areas of the first touch electrode and the second touch electrode can be improved.

In specific implementation, the touch electrodes in the embodiments of the present disclosure may include the first touch electrodes and the second touch electrodes as shown in FIG. 1. In the embodiments of the present disclosure, the touch electrodes in the touch area can be divided into the first type touch electrodes and the second type touch electrodes; among them, the touch electrodes of the first type and the second type touch electrodes are The area is different. Exemplarily, the area of the touch electrode of the first type can be made smaller than the area of the touch electrode of the second type. For example, the first touch electrodes may be divided into the first type of touch electrodes, and the second touch electrodes may be divided into the second type of touch electrodes. Of course, the present disclosure includes but is not limited to this. Hereinafter, the first touch electrode is divided into the first type of touch electrode, and the second touch electrode is divided into the second type of touch electrode as an example for description.

In specific implementation, in the embodiment of the present disclosure, the electrode group may include M first electrode groups Zm-1 (M is an integer greater than or equal to 1, 1≤m≤M, and m is an integer); In one electrode group Zm-1, the first touch electrode and the second touch electrode are both used as the first type touch electrode, and the third touch electrode is used as the second type touch electrode. That is, in the first electrode group Zm-1, two touch electrodes are the first touch electrodes, and the other touch electrode is the second touch electrodes.

In addition, during specific implementation, in the embodiments of the present disclosure, determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle may specifically include: Group, using the following formula to determine the first weight of each first-type touch electrode in the m-th first electrode group according to the touch capacitance value of the first-type touch electrode in the m-th first electrode group;

Among them, 1≤m≤M, and m is an integer, ω _1m-11 represents the first weight of the first touch electrode in the m-th first electrode group, _{and ω 1m-12 represents the m-th first electrode group} The first weight of the second touch electrode, C _1m-11 represents the touch capacitance value of the first touch electrode in the m-th first electrode group, and C _1m-12 represents the first weight of the m-th first electrode group. The touch capacitance value of the two touch electrodes.

In specific implementation, in the embodiment of the present disclosure, in the m-th first electrode group, the first weight ω _1m-13 of the third touch electrode is

Since there is only one second-type touch electrode in the m-th first electrode group, the first weight ω _{1m-13 of the} second-type touch electrode can be set as

In specific implementation, in the embodiments of the present disclosure, the following formula is used, according to the first weight corresponding to the m-th first electrode group, and the position coordinate (x _1m-11 , y _1m-11 ), the position coordinates of the second touch electrode (x _1m-12 , y _1m-12 ), and the position coordinates of the third touch electrode (x _1m-13 , y _{1m- 13 ), determine the centroid coordinates (x m-1} , y _m-1 ) of the triangle corresponding to the m-th first electrode group:

x _m-1 =ω _1m-11 *x _1m-11 +ω _1m-12 *x _1m-12 +ω _1m-13 *x _1m-13 ;

y _m-1 =ω _1m-11 *y _1m-11 +ω _1m-12 *y _1m-12 +ω _1m-13 *y _1m-13 .

In specific implementation, in the embodiment of the present disclosure, the target touch coordinates (x ₀₁ , y ₀₁ ) are determined according to the centroid coordinates of all triangles: where x ₀₁ is the average value of the abscissa of the centroid coordinates of all triangles, y ₀₁ is the average of the ordinates in the centroid coordinates of all triangles. In this way, the average of the abscissas in the centroid coordinates of all triangles can be used as the abscissa of the target touch coordinate, and the average of the ordinates in the centroid coordinates of all triangles can be used as the ordinate of the target touch coordinate.

Generally, an in-cell display touch screen also includes a plurality of pixels arranged in an array. After the target touch coordinates are determined, they need to be applied to the display. Since the display is performed through pixels, the target touch coordinates need to be mapped to the position of the pixel. For example, the user draws a line on the display touch screen with a finger, and after detecting the target touch coordinates, the line needs to be displayed on the screen, and the display needs to be performed with pixels at the corresponding position. In specific implementation, after determining the target touch coordinates, it may further include: determining the position coordinates of the pixels to be displayed in the display touch screen according to the target touch coordinates and a predetermined scale factor. _{Exemplarily, the position coordinates (x p0} , y _p0 ) of the pixels to be displayed in the display touch screen are _{: x p0} = βx ₀₁ , y _p0 = βy ₀₁ . β represents a predetermined scale factor. In practical applications, the predetermined scale factor β may be: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 and other values. Of course, the pre-determined proportional coefficient β can also be designed and determined according to actual application requirements, and is not limited here.

In the following, in conjunction with specific implementation, in conjunction with FIG. 4 and FIG. 5, the above-mentioned touch positioning method provided by the embodiment of the present disclosure will be explained through specific embodiments.

Exemplarily, as shown in FIG. 4 and FIG. 5, CB represents the touch area formed when the finger touches the touch screen. And select the first touch electrodes X13, X14, X15, X16, X17, X18, X19, X20 and the second touch electrode Y12 in the AA area of the touch area CB, and use the first touch electrodes X14, X15 , X18, X19, and the second touch electrode Y12 are taken as examples for description.

The above-mentioned touch positioning method provided by the embodiments of the present disclosure may include the following steps:

(1) Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates of the first touch electrode X14 (x _X14 , y _X14 ), the position coordinates of the first touch electrode X15 (x _X15 , y _X15 ), and the first touch The position coordinates of the electrode X18 (x _X18 , y _X18 ), the position coordinates of the first touch electrode X19 (x _X19 , y _X19 ), and the position coordinates of the second touch electrode Y12 (x _Y12 , y _Y12 ). And the touch capacitance value C _X14 of the first touch electrode X14, the touch capacitance value C _X15 of the first touch electrode X15, the touch capacitance value C X18 of the first touch electrode X18, and the first touch electrode _{X18 are acquired.} The touch capacitance value C _{X19 of X19} and the touch capacitance value C _{Y2 of the} second touch electrode Y12.

(2) Taking the three touch electrodes in the touch area as an electrode group, the electrode group may include M first electrode groups; wherein, in the first electrode group, the first touch electrode and the second touch electrode The control electrodes are all used as touch electrodes of the first type, and the third touch electrode is used as touch electrodes of the second type. In addition, the centers of the touch electrodes in each first electrode group are sequentially connected to form a triangle.

Exemplarily, the electrode group may include two first electrode groups: the first first electrode group Z1-1 and the second first electrode group Z2-1. The first first electrode group Z1-1 has first touch electrodes X19, X18 and a second touch electrode Y12. In addition, the center O18 of the first touch electrode X18, the center O19 of the first touch electrode X19, and the center O12 of the second touch electrode Y12 may be connected in sequence to form a triangle S1-1.

In addition, the second first electrode group Z2-1 has first touch electrodes X14 and X15 and a second touch electrode Y12. In addition, the center O14 of the first touch electrode X14, the center O15 of the first touch electrode X15, and the center O12 of the second touch electrode Y12 may be connected in sequence to form a triangle S2-1.

(3) For the first first electrode group Z1-1, in the first first electrode group Z1-1, the first touch electrode X18 is the first touch electrode, and the first touch electrode X19 is the first touch electrode. Two touch electrodes, the second touch electrode Y12 is the third touch electrode as an example, the first weight ω _11-11 of the first touch electrode X18 is:

The first weight ω _11-12 of the first touch electrode X19 is:

The first weight ω _11-13 of the second touch electrode Y12 is

Wherein, C _11-11 = C _X18 and C _11-12 = C _X19 .

For the second first electrode group Z2-1, in the second first electrode group Z2-1, the first touch electrode X14 is the first touch electrode, and the first touch electrode X15 is the second touch electrode. Taking the control electrode as an example, the first weight ω _12-11 of the first touch electrode X14 is:

The first weight ω _12-12 of the first touch electrode X15 is:

The first weight ω _12-13 of the second touch electrode Y12 is

Wherein, C _12-11 ＝C _X14 , C _12-12 ＝C _X15 .

_{(4) The centroid coordinates (x 1-1} , y _1-1 ) of the triangle S1-1 corresponding to the first electrode group Z1-1 are: x _1-1 =ω _11-11 *x _11-11 +ω _11-12 *x _11-12 +ω _11-13 *x _11-13 , y _1-1 =ω _11-11 *y _11-11 +ω _11-12 *y _11-12 +ω _11-13 *y _11-13 . Among them, x _11-11 = x _X18 , x _11-12 = x _X19 , and x _11-13 = x _Y12 . y _11-11 =y _X18 , y _11-12 =y _X19 , y _11-13 =y _Y12 .

_{The centroid coordinates (x 2-1} , y _2-1 ) of the triangle S2-1 corresponding to the second first electrode group Z2-1 are: x _2-1 =ω _12-11 *x _12-11 +ω _{12 -12} *x _12-12 +ω _12-13 *x _12-13 ;y _2-1 =ω _12-11 *y _12-11 +ω _12-12 *y _12-12 +ω _12-13 *y _{12 -13} . Among them, x _12-11 =x _X14 , x _12-12 =x _X15 , and x _12-13 =x _Y12 . y _12-11 =y _X14 , y _12-12 =y _X15 , y _12-13 =y _Y12 .

(5) According to the centroid coordinates of all triangles, that is, the centroid coordinates of triangle S1-1 (x _1-1 , y _1-1 ) and the centroid coordinates of triangle S2-1 (x _2-1 , y _2-1 ), determine The target touch coordinates (x ₀₁ , y ₀₁ ). in,

In addition, simulations were performed on the above-mentioned first first electrode group Z1-1 and the second first electrode group Z2-1. If the actual touch position coordinates are (x ₀ , y ₀ ), it is (4, 4.5). Among them, C _X18 =10, C _X19 =5, C _X14 =7, C _X15 =2, C _Y2 =12, and the position coordinates (x _X18 , y _X18 ) of the first touch electrode X18 are (3, 4), The position coordinates (x _X19 , y _X19 ) of the first touch electrode X19 are (3, 5), the position coordinates (x _X14 , y _X14 ) of the first touch electrode X14 are (5, 4), and the first touch The position coordinates (x _X15 , y _X15 ) of the electrode X15 are (5, 5), and the position coordinates of the second touch electrode Y12 are (4, 4.5).

_{Therefore, the first weight ω 11-11} =1 of the first touch electrode X18, the first _{weight ω 11-12} =1/6 of the first touch electrode X19, and the first weight of the second touch electrode Y12 ω _11-13 = 1/2. Then, the centroid coordinates (3.5, 4.417) of the triangle S1-1 corresponding to the first electrode group Z1-1 can be obtained.

In addition, the first weight ω _{12-11 of the} first touch electrode X14 = 7/18, the first weight ω _{12-12 of the} first touch electrode X15 = 1/9, and the first weight of the second touch electrode Y12 ω _12-13 = 1/2. Then, the centroid coordinates (4.5, 4.36) of the triangle S2-1 corresponding to the second first electrode group Z2-1 can be obtained.

Thus, the target touch coordinates (4, 4.389) can be obtained. Moreover, the error rate Er1 between the actual touch position coordinates (4, 4.5) and the target touch coordinates (4, 4.389) can satisfy the following relationship:

That is, Er1=0.111. Therefore, it can be seen that the error rate is small, and the touch accuracy can be improved.

_{In addition, the relationship between the position coordinates (x p0} , y _p0 ) of the pixels to be displayed in the display touch screen and the target touch coordinates (4, 4.389) can be seen in Table 1 below.

Scale factor β	x p0	y p0
10	40	43.89
20	80	87.78
30	120	131.67
40	160	178.56
50	200	219.45
60	240	263.34
70	280	307.23
80	320	351.12
90	360	395.01
100	400	438.9

Table 1

The embodiments of the present disclosure provide other touch positioning methods, which are modified with respect to some implementations in the foregoing embodiments. Hereinafter, only the differences between this embodiment and the above-mentioned embodiment will be described, and the similarities will not be repeated here.

In specific implementation, in the embodiment of the present disclosure, the electrode group may also include N second electrode groups Zn-2 (N is an integer greater than or equal to 1, 1≤n≤N, and n is an integer); wherein, In the second electrode group Zn-2, the first touch electrode and the second touch electrode are both used as second type touch electrodes, and the third touch electrode is used as first type touch electrodes. That is, in the second electrode group Zn-2, two touch electrodes are the second touch electrodes, and the other touch electrode is the first touch electrode.

In addition, during specific implementation, in the embodiments of the present disclosure, determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: , Using the following formula to determine the first weight of each second-type touch electrode in the n-th second electrode group according to the touch capacitance value of the second-type touch electrode in the n-th second electrode group;

Among them, 1≤n≤N, and n is an integer, ω _1n-21 represents the first weight of the first touch electrode in the n-th second electrode group, _{and ω 1n-22 represents the n-th second electrode group} The first weight of the second touch electrode, C _1n-21 represents the touch capacitance value of the first touch electrode in the nth second electrode group, and C _1n-22 represents the first weight of the nth second electrode group. The touch capacitance value of the two touch electrodes.

In specific implementation, in the embodiment of the present disclosure, in the nth second electrode group, the first weight ω _1n-23 of the third touch electrode is

Since there is only one touch electrode of the first type in the nth second electrode group, the first weight ω _{1n-23 of the} touch electrode of the first type can be set as

In specific implementation, in the embodiments of the present disclosure, the following formula is used, according to the first weight corresponding to the nth second electrode group, and the position coordinate of the first touch electrode in the nth second electrode group (x _1n-21 , y _1n-21 ), the position coordinates of the second touch electrode (x _1n-22 , y _1n-22 ), and the position coordinates of the third touch electrode (x _1n-23 , y _{1n- 23 ), determine the centroid coordinates (x n-2} , y _n-2 ) of the triangle corresponding to the n-th second electrode group: where x _n-2 =ω _1n-21 *x _1n-21 +ω _1n-22 *x _1n-22 +ω _1n-23 *x _1n-23 ;y _n-2 =ω _1n-21 *y _1n-21 +ω _1n-22 *y _1n-22 +ω _1n-23 *y _1n-23 .

In the following, in conjunction with specific implementations, in conjunction with FIG. 6 and FIG. 7, the above-mentioned touch positioning method provided by the embodiments of the present disclosure will be explained through specific embodiments.

Exemplarily, as shown in FIG. 6 and FIG. 7, CB represents the touch area formed when a finger touches the touch screen. And the first touch electrodes X12 to X20 and the second touch electrodes Y65 and Y66 in the AA area in the touch area CB are selected. In addition, the first touch electrodes X8 and X9 and the second touch electrodes Y65 and Y66 are taken as an example for description.

The above-mentioned touch positioning method provided by the embodiments of the present disclosure may include the following steps:

(1) Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates (xX8, yX8) of the first touch electrode X8, the position coordinates (xX9, yX9) of the first touch electrode X9, and the position of the second touch electrode Y66 can be obtained through methods in the related art. The coordinates (xY66, yY66) and the position coordinates (xY65, yY65) of the second touch electrode Y65. And the touch capacitance value C _{X8 of the first touch electrode X8, the touch capacitance value C X9 of the} first touch electrode X9, the touch capacitance value C Y65 of the second touch electrode _Y65 , and the second touch The touch capacitance value of the electrode Y66 is C _Y66 .

(2) Taking the three touch electrodes in the touch area as an electrode group, the electrode group may include M first electrode groups and N second electrode groups; wherein, in the first electrode group, the first electrode group Both the control electrode and the second touch electrode are used as the first type touch electrode, and the third touch electrode is used as the second type touch electrode. In addition, the centers of the touch electrodes in each first electrode group are sequentially connected to form a triangle. In addition, in the second electrode group, both the first touch electrode and the second touch electrode serve as the second type touch electrode, and the third touch electrode serves as the first type touch electrode.

Exemplarily, the electrode group may include one first electrode group and one second electrode group: that is, the first first electrode group Z1-1 and the first second electrode group Z1-2. The first first electrode group Z1-1 has first touch electrodes X8, X9 and second touch electrodes Y66. In addition, the center O8 of the first touch electrode X8, the center O9 of the first touch electrode X9, and the center O66 of the second touch electrode Y66 may be connected in sequence to form a triangle S1-1.

In addition, the first second electrode group Z1-2 has a first touch electrode X9 and second touch electrodes Y65 and Y66. In addition, the center O9 of the first touch electrode X9, the center O65 of the second touch electrode Y65, and the center O66 of the second touch electrode Y66 may be connected in sequence to form a triangle S1-2.

(3) For the first first electrode group Z1-1, in the first first electrode group Z1-1, the first touch electrode X8 is the first touch electrode, and the first touch electrode X9 is the first touch electrode. Two touch electrodes, the second touch electrode Y66 is the third touch electrode as an example, the first weight ω _11-11 of the first touch electrode X8 is:

The first weight ω _11-12 of the first touch electrode X9 is:

The first weight ω _11-13 of the second touch electrode Y66 is

Wherein, C _11-11 =C _X8 , C _11-12 =C _X9 .

For the first second electrode group Z1-1, in the first second electrode group Z1-2, the second touch electrode Y65 is the first touch electrode, and the second touch electrode Y66 is the second touch electrode. For example, the first touch electrode X9 is the third touch electrode, and the first weight ω _11-21 of the second touch electrode Y65 is:

The first weight ω _11-22 of the second touch electrode Y66 is:

The first weight ω _11-23 of the first touch electrode X9 is

Among them, C _11-21 =C _Y65 and C _11-22 =C _Y66 .

_{(4) The centroid coordinates (x 1-1} , y _1-1 ) of the triangle S1-1 corresponding to the first electrode group Z1-1 are: x _1-1 =ω _11-11 *x _11-11 +ω _11-12 *x _11-12 +ω _11-13 *x _11-13 , y _1-1 =ω _11-11 *y _11-11 +ω _11-12 *y _11-12 +ω _11-13 *y _11-13 . Among them, x _11-11 = x _X8 , x _11-12 = x _X9 , and x _11-13 = x _Y66 . y _11-11 =y _X8 , y _11-12 =y _X9 , y _11-13 =y _Y66 .

_{The centroid coordinates (x 1-2} , y _1-2 ) of the triangle S1-2 corresponding to the first second electrode group Z1-2 are: x _1-2 =ω _11-21 *x _11-21 +ω _{11 -22} *x _11-22 +ω _11-23 *x _11-23 ;y _1-2 =ω _11-21 *y _11-21 +ω _11-22 *y _11-22 +ω _11-23 *y _{11 -23} . Among them, x _11-21 =x _Y65 , x _11-22 =x _Y66 , and x _11-23 =x _X9 . y _11-21 =y _Y65 , y _11-22 =y _Y66 , and y _11-23 =y _X9 .

(5) According to the centroid coordinates of all triangles, that is, the centroid coordinates of triangle S1-1 (x _1-1 , y _1-1 ) and the centroid coordinates of triangle S1-2 (x _1-2 , y _1-2 ), determine The target touch coordinates (x ₀₁ , y ₀₁ ). in,

The embodiments of the present disclosure provide other touch positioning methods, which are modified with respect to some implementations in the above-mentioned embodiments. Hereinafter, only the differences between this embodiment and the above-mentioned embodiment will be described, and the similarities will not be repeated here.

In specific implementation, in the embodiment of the present disclosure, the electrode group includes k third electrode groups Zk-3 (K is an integer greater than or equal to 1, 1≤k≤K, and k is an integer); wherein, the third electrode group Zk-3 In the electrode group Zk-3, the first touch electrode, the second touch electrode, and the third touch electrode can all be used as the first type of touch electrode. Alternatively, in the third electrode group, the first touch electrode, the second touch electrode, and the third touch electrode may all be used as the second type of touch electrode. In the following description, in the third electrode group Zk-3, the first touch electrode, the second touch electrode, and the third touch electrode can all be used as the first type of touch electrode for description.

In addition, during specific implementation, in the embodiments of the present disclosure, according to the touch capacitance value of the touch electrode corresponding to the triangle, determining the first weight of the touch electrode corresponding to the triangle specifically includes: , Using the following formula to determine the first weight of each touch electrode in the k third electrode group according to the touch capacitance value of each touch electrode in the k third electrode group;

Among them, 1≤k≤K, and k is an integer, ω _1k-31 represents the first weight of the first touch electrode in the kth third electrode group, and ω _1k-32 represents the kth third electrode group The first weight of the second touch electrode, ω _1k-33 represents the first weight of the third touch electrode in the k-th third electrode group, and C _1k-31 represents the first weight of the k-th third electrode group The touch capacitance value of each touch electrode, C _1k-32 represents the touch capacitance value of the second touch electrode in the kth third electrode group, and C _1k-33 represents the third touch electrode in the kth third electrode group The touch capacitance value of each touch electrode.

In specific implementation, in the embodiments of the present disclosure, the following formula is adopted, according to the first weight corresponding to the kth third electrode group, and the position coordinate (x _1k-31 , y _1k-31 ), the position coordinates of the second touch electrode (x _1k-32 , y _1k-32 ), and the position coordinates of the third touch electrode (x _1k-33 , y _{1k- 33 ), determine the centroid coordinates (x k-3} , y _k-3 ) of the triangle corresponding to the k-th second electrode group:

x _k-3 =ω _1k-31 *x _1k-31 +ω _1k-32 *x _1k-32 +ω _1k-33 *x _1k-33 ;

y _k-3 =ω _1k-31 *y _1k-31 +ω _1k-32 *y _1k-32 +ω _1k-33 *y _1k-33 .

In the following, in conjunction with specific implementation, the above-mentioned touch positioning method provided by the embodiment of the present disclosure will be explained through specific embodiments in conjunction with FIG. 4 and FIG. 8.

Exemplarily, as shown in FIG. 4 and FIG. 8, CB represents the touch area formed when the finger touches the touch screen. And select the first touch electrodes X13, X14, X15, X16, X17, X18, X19, X20 and the second touch electrode Y12 in the AA area of the touch area CB, and use the first touch electrodes X14, X15 , X18, X19 are examples for description.

The above-mentioned touch positioning method provided by the embodiments of the present disclosure may include the following steps:

(1) Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates of the first touch electrode X14 (x _X14 , y _X14 ), the position coordinates of the first touch electrode X15 (x _X15 , y _X15 ), and the first touch The position coordinates of the electrode X18 (x _X18 , y _X18 ), the position coordinates of the first touch electrode X19 (x _X19 , y _X19 ), and the position coordinates of the second touch electrode Y12 (x _Y12 , y _Y12 ). And the touch capacitance value C _X14 of the first touch electrode X14, the touch capacitance value C _X15 of the first touch electrode X15, the touch capacitance value C X18 of the first touch electrode X18, and the first touch electrode _{X18 are acquired.} The touch capacitance value C _{X19 of X19} and the touch capacitance value C _{Y2 of the} second touch electrode Y12.

(2) Taking three touch electrodes in the touch area as an electrode group, the electrode group may include K third electrode groups; wherein, in the third electrode group, the first touch electrode, the second touch Both the control electrode and the third touch electrode are used as the first type of touch electrode. In addition, the centers of the touch electrodes in each third electrode group are sequentially connected to form a triangle.

Exemplarily, the electrode group may include two third electrode groups: the first third electrode group Z1-3 and the second third electrode group Z2-3. The first third electrode group Z1-3 has first touch electrodes X19, X18, and X15. In addition, the center O18 of the first touch electrode X18, the center O19 of the first touch electrode X19, and the center O15 of the first touch electrode X15 may be connected in sequence to form a triangle S1-3.

In addition, the second third electrode group Z2-3 has first touch electrodes X14, X15, and X19. In addition, the center O14 of the first touch electrode X14, the center O15 of the first touch electrode X15, and the center O19 of the first touch electrode X19 may be connected in sequence to form a triangle S2-3.

(3) For the first third electrode group Z1-3, in the first third electrode group Z1-3, the first touch electrode X18 is the first touch electrode, and the first touch electrode X19 is the first touch electrode. Two touch electrodes, the first touch electrode X15 is the third touch electrode as an example, the first weight ω _11-31 of the first touch electrode X18 is:

The first weight ω _11-32 of the first touch electrode X19 is:

The first weight ω _11-33 of the first touch electrode X15 is:

Among them, C _11-31 =CX ₁₈ , C _11-32 =CX ₁₉ , and C _11-33 =CX ₁₅ .

For the second third electrode group Z2-3, in the second third electrode group Z2-3, the first touch electrode X14 is the first touch electrode, and the first touch electrode X15 is the second touch electrode. For example, the first touch electrode X19 is the third touch electrode, and the first weight ω _12-31 of the first touch electrode X14 is:

The first weight ω _12-32 of the first touch electrode X15 is:

The first weight ω _12-33 of the first touch electrode X19 is:

Wherein, C _12-31 =CX ₁₄ , C _12-32 =CX ₁₅ , and C _12-33 =CX ₁₉ .

_{(4) The centroid coordinates (x 1-3} , y _1-3 ) of the triangle S1-3 corresponding to the first third electrode group Z1-3 are: x _1-3 =ω _11-31 *x _11-31 +ω _11-32 *x _11-32 +ω _11-33 *x _11-33 , y _1-3 =ω _11-31 *y _11-31 +ω _11-32 *y _11-32 +ω _11-33 *y _11-33 . Among them, x _11-31 = xX18, x _11-32 = xX19, and x _11-33 = xX15. y _11-31 = yX18, y _11-32 = yX19, y _11-33 = yX15.

_{The centroid coordinates (x 2-3} , y _2-3 ) of the triangle S2-3 corresponding to the second third electrode group Z2-3 are: x _2-3 =ω _12-31 *x _12-31 +ω _{12 -32} *x _12-32 +ω _12-33 *x _12-33 , y _2-3 =ω _12-31 *y _12-31 +ω _12-32 *y _12-32 +ω _12-33 *y _{12 -33} . Among them, x _12-31 = xX14, x _12-32 = xX15, and x _12-33 = xX19. y _12-31 = yX14, y _12-32 = yX15, y _12-33 = yX19.

(5) According to the centroid coordinates of all triangles, namely the centroid coordinates of triangle S1-3 (x _1-3 , y _1-3 ) and the centroid coordinates of triangle S2-3 (x _2-3 , y _2-3 ), determine The target touch coordinates (x ₀₁ , y ₀₁ ). in,

The embodiments of the present disclosure provide other touch positioning methods, as shown in FIG. 9, which modify some implementations in the foregoing embodiments. Hereinafter, only the differences between this embodiment and the above-mentioned embodiment will be described, and the similarities will not be repeated here.

During specific implementation, in the embodiments of the present disclosure, the target touch coordinates are determined according to the coordinates of the centroids of all triangles, as shown in FIG. 9, which may specifically include the following steps:

S41. For each triangle, determine a second weight corresponding to the triangle according to the touch capacitance values of all touch electrodes corresponding to the triangle;

S42: Determine the target touch coordinates according to the centroid coordinates of all triangles and their corresponding second weights.

In specific implementation, in the embodiment of the present disclosure, for the qth triangle, the following formula is used to determine the second weight ω corresponding to the qth triangle according to the touch capacitance values of all touch electrodes corresponding to the qth triangle _2-q ;

Among them, Q represents the total number of triangles, and C _q represents the sum of touch capacitance values of all touch electrodes corresponding to the qth triangle.

In specific implementation, in the embodiments of the present disclosure, the following formula is adopted to determine the target touch coordinates (x ₀₂ , y ₀₂ ) according to the centroid coordinates of all triangles and their corresponding second weights;

Among them, x _4-q represents the abscissa in the centroid coordinates of the qth triangle, and y _4-q represents the ordinate in the centroid coordinates of the qth triangle.

In the following, in conjunction with specific implementation, in conjunction with FIG. 4 and FIG. 5, the above-mentioned touch positioning method provided by the embodiment of the present disclosure will be explained through specific embodiments.

(1) Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates of the first touch electrode X14 (x _X14 , y _X14 ), the position coordinates of the first touch electrode X15 (x _X15 , y _X15 ), and the first touch The position coordinates of the electrode X18 (x _X18 , y _X18 ), the position coordinates of the first touch electrode X19 (x _X19 , y _X19 ), and the position coordinates of the second touch electrode Y12 (x _Y12 , y _Y12 ). And the touch capacitance value C _X14 of the first touch electrode X14, the touch capacitance value C _X15 of the first touch electrode X15, the touch capacitance value C X18 of the first touch electrode X18, and the first touch electrode _{X18 are acquired.} The touch capacitance value C _{X19 of X19} and the touch capacitance value C _{Y2 of the} second touch electrode Y12.

(2) Taking the three touch electrodes in the touch area as an electrode group, the electrode group may include M first electrode groups; wherein, in the first electrode group, the first touch electrode and the second touch electrode The control electrodes are all used as touch electrodes of the first type, and the third touch electrode is used as touch electrodes of the second type. In addition, the centers of the touch electrodes in each first electrode group are sequentially connected to form a triangle.

Exemplarily, the electrode group may include two first electrode groups: the first first electrode group Z1-1 and the second first electrode group Z2-1. The first first electrode group Z1-1 has first touch electrodes X19, X18 and a second touch electrode Y12. In addition, the center O18 of the first touch electrode X18, the center O19 of the first touch electrode X19, and the center O12 of the second touch electrode Y12 may be connected in sequence to form a triangle S1-1.

In addition, the second first electrode group Z2-1 has first touch electrodes X14 and X15 and a second touch electrode Y12. In addition, the center O14 of the first touch electrode X14, the center O15 of the first touch electrode X15, and the center O12 of the second touch electrode Y12 may be connected in sequence to form a triangle S2-1.

(3) For the first first electrode group Z1-1, in the first first electrode group Z1-1, the first touch electrode X18 is the first touch electrode, and the first touch electrode X19 is the first touch electrode. Two touch electrodes, the second touch electrode Y12 is the third touch electrode as an example, the first weight ω _11-11 of the first touch electrode X18 is:

The first weight ω _11-12 of the first touch electrode X19 is:

The first weight ω _11-13 of the second touch electrode Y12 is

Wherein, C _11-11 =C _X18 , and C _11-12 =C _X19 .

For the second first electrode group Z2-1, in the second first electrode group Z2-1, the first touch electrode X14 is the first touch electrode, and the first touch electrode X15 is the second touch electrode. Taking the control electrode as an example, the first weight ω _12-11 of the first touch electrode X14 is:

The first weight ω _12-12 of the first touch electrode X15 is:

The first weight ω _12-13 of the second touch electrode Y12 is

Wherein, C _12-11 ＝C _X14 , C _12-12 ＝C _X15 .

_{(4) The centroid coordinates (x 1-1} , y _1-1 ) of the triangle S1-1 corresponding to the first electrode group Z1-1 are: x _1-1 =ω _11-11 *x _11-11 +ω _11-12 *x _11-12 +ω _11-13 *x _11-13 , y _1-1 =ω _11-11 *y _11-11 +ω _11-12 *y _11-12 +ω _11-13 *y _11-13 . Among them, x _11-11 = x _X18 , x _11-12 = x _X19 , and x _11-13 = x _Y12 . y _11-11 =y _X18 , y _11-12 =y _X19 , y _11-13 =y _Y12 .

_{The centroid coordinates (x 2-1} , y _2-1 ) of the triangle S2-1 corresponding to the second first electrode group Z2-1 are: x _2-1 =ω _12-11 *x _12-11 +ω _{12 -12} *x _12-12 +ω _12-13 *x _12-13 ;y _2-1 =ω _12-11 *y _12-11 +ω _12-12 *y _12-12 +ω _12-13 *y _{12 -13} . Among them, x _12-11 =x _X14 , x _12-12 =x _X15 , and x _12-13 =x _Y12 . y _12-11 =y _X14 , y _12-12 =y _X15 , y _12-13 =y _Y12 .

(5) The triangle S1-1 is taken as the first triangle, and the second weight ω _2-1 corresponding to the first triangle S1-1 is:

Wherein, C ₁ =C _X18 +C _X19 +C _Y2 , and C ₂ =C _X14 +C _X15 +C _Y2 .

The triangle S2-1 is taken as the second triangle, and the second weight ω _2-2 corresponding to the second triangle S2-1 is:

(6) According to the centroid coordinates of all triangles, that is, the centroid coordinates (x _1-1 , y _1-1 ) of triangle S1-1 correspond to the second weight ω _{2-1 of} triangle S1-1, and the second weight ω 2-1 of triangle S2-1 The centroid coordinates (x _2-1 , y _2-1 ) correspond to the second weight ω _{2-2 of the} triangle S2-1 to determine the target touch coordinates (x ₀₂ , y ₀₂ ). Among them, x ₀₂ =ω _2-1 *x _1-1 +ω _2-2 *x _2-1 , and y ₀₂ =ω _2-1 *y _1-1 +ω _2-2 *y _2-1 .

In addition, simulations were performed on the above-mentioned first first electrode group Z1-1 and the second first electrode group Z2-1. If the actual touch position coordinates are (x ₀ , y ₀ ), it is (4, 4.5). Among them, C _X18 =10, C _X19 =5, C _X14 =7, C _X15 =2, C _Y2 =12, and the position coordinates (x _X18 , y _X18 ) of the first touch electrode X18 are (3, 4), The position coordinates (x _X19 , y _X19 ) of the first touch electrode X19 are (3, 5), the position coordinates (x _X14 , y _X14 ) of the first touch electrode X14 are (5, 4), and the first touch The position coordinates (x _X15 , y _X15 ) of the electrode X15 are (5, 5), and the position coordinates of the second touch electrode Y12 are (4, 4.5).

_{Therefore, the first weight ω 11-11} =1 of the first touch electrode X18, the first _{weight ω 11-12} =1/6 of the first touch electrode X19, and the first weight of the second touch electrode Y12 ω _11-13 = 1/2. Then, the centroid coordinates (3.5, 4.417) of the triangle S1-1 corresponding to the first electrode group Z1-1 can be obtained.

In addition, the first weight ω _{12-11 of the} first touch electrode X14 = 7/18, the first weight ω _{12-12 of the} first touch electrode X15 = 1/9, and the first weight of the second touch electrode Y12 ω _12-13 = 1/2. Then, the centroid coordinates (4.5, 4.36) of the triangle S2-1 corresponding to the second first electrode group Z2-1 can be obtained.

_{In addition, the second weight ω 2-1} of the triangle S1-1 corresponding to the first first electrode group Z1-1 = 0.5625, and the second weight ω of the triangle S2-1 corresponding to the second first electrode group Z2-1 _2-2 = 0.4375, therefore, x ₀₂ =3.9375 and y ₀₂ =4.392. Therefore, the target touch coordinates are (3.9375, 4.392).

Moreover, the error rate Er2 between the actual touch position coordinates (4, 4.5) and the target touch coordinates (3.9375, 4.392) can satisfy the following relationship:

That is, Er2=0.125. Therefore, it can be seen that the error rate is small, and the touch accuracy can be improved.

It should be noted that, if there is no conflict, the features in the foregoing embodiments can be combined.

Based on the same inventive concept, embodiments of the present disclosure also provide a device for determining a touch position, as shown in FIG. 10, which may include:

The capacitance value determination circuit 01 is configured to obtain the position coordinates and the touch capacitance value of each touch electrode in the touch area; wherein, the touch capacitance value is the capacitance value between the touch body and the touch electrode;

The triangle determination circuit 02 is configured to take the three touch electrodes in the touch area as an electrode group, and connect the centers of the touch electrodes in each electrode group sequentially into a triangle; wherein, any two triangles do not overlap ；

The centroid coordinate determination circuit 03 is configured to determine the centroid coordinates of the triangle according to the touch capacitance value and position coordinates of the touch electrode corresponding to the triangle for each triangle;

The touch coordinate determination circuit 04 is configured to determine the target touch coordinate according to the centroid coordinates of all triangles.

It should be noted that any one of the foregoing capacitance value determination circuit, triangle determination circuit, centroid coordinate determination circuit, and touch coordinate determination circuit may adopt a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. form. Of course, in actual applications, it can be designed according to specific requirements, which is not limited here.

It should be noted that the working principle and specific implementation of the device for determining the touch position are the same as the principle and implementation of the touch positioning method in the above embodiment. Therefore, for the driving method of the device for determining the touch position, please refer to the above implementation. The specific implementation of the touch positioning method in the example is implemented, and will not be repeated here.

Based on the same inventive concept, the embodiments of the present disclosure also provide a computer device, including a memory, a processor, and a computer program stored on the memory and running on the processor. The processor executes the steps of the touch positioning method when the computer program is executed. .

Based on the same inventive concept, the embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned touch positioning method provided by the embodiments of the present disclosure are implemented. Exemplarily, the present disclosure may take the form of a computer program product implemented on one or more computer-readable storage media containing computer-readable program codes.

Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the present disclosure may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program codes. Computer-readable storage media includes volatile and non-volatile, removable and non-removable implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) In addition to the medium. Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or Any other medium used to store desired information and that can be accessed by a computer.

The present disclosure is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. In this way, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims (17)

1. A touch positioning method, which includes:

   Obtain the position coordinates and touch capacitance value of each touch electrode in the touch area;

   Taking the three touch electrodes in the touch area as an electrode group, the centers of the touch electrodes in each of the electrode groups are sequentially connected to form a triangle; wherein any two of the triangles do not overlap;

   For each of the triangles, determine the centroid coordinates of the triangle according to the touch capacitance value and the position coordinates of the touch electrode corresponding to the triangle;

   According to the centroid coordinates of all the triangles, the target touch coordinates are determined.
2. The touch positioning method according to claim 1, wherein the determining the centroid coordinates of the triangle may specifically include the following steps:

   Determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle;

   Determine the centroid coordinates of the triangle according to the first weight and position coordinates of the touch electrode corresponding to the triangle.
3. The touch positioning method of claim 2, wherein the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the first type of touch The area of the electrode and the second type touch electrode are different;

   The electrode group includes M first electrode groups; wherein, in the first electrode group, both the first touch electrode and the second touch electrode serve as the first type of touch electrode, and the third touch electrode The control electrode is used as the second type of touch electrode; M is an integer greater than or equal to 1;

   The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the m-th first electrode group, using the following formula, according to the The touch capacitance value of the first type touch electrode of the m-th first electrode group determines the first weight of each first type touch electrode in the m-th first electrode group;

   

   

   Wherein, 1≤m≤M, and m is an integer, ω _1m-11 represents the first weight of the first touch electrode in the m-th first electrode group, and ω _1m-12 represents the m-th The first weight of the second touch electrode in the first electrode group, C _1m-11 represents the touch capacitance value of the first touch electrode in the m-th first electrode group, C _{1m -12} represents the touch capacitance value of the second touch electrode in the m-th first electrode group.
4. The touch positioning method of claim 3, wherein, in the m-th first electrode group, the first weight ω _1m-13 of the third touch electrode is

   
5. The touch positioning method according to claim 3 or 4, wherein the following formula is used, according to the first weight corresponding to the m-th first electrode group, and the first weight in the m-th first electrode group The position coordinates of the touch electrode (x _1m-11 , y _1m-11 ), the position coordinates of the second touch electrode (x _1m-12 , y _1m-12 ), and the position coordinates of the third touch electrode ( x _1m-13 , y _{1m-13 ), determine the centroid coordinates (x m-1} , y _m-1 ) of the triangle corresponding to the m-th first electrode group:

   x _m-1 =ω _1m-11 *x _1m-11 +ω _1m-12 *x _1m-12 +ω _1m-13 *x _1m-13 ;

   y _m-1 =ω _1m-11 *y _1m-11 +ω _1m-12 *y _1m-12 +ω _1m-13 *y _1m-13 .
6. 7. The touch positioning method according to any one of claims 2-5, wherein the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the The touch electrodes of the first type and the touch electrodes of the second type have different areas;

   The electrode group includes N second electrode groups; wherein, in the second electrode group, both the first touch electrode and the second touch electrode serve as the second type of touch electrodes, and the third touch electrode The control electrode serves as the first type of touch electrode; N is an integer greater than or equal to 1;

   The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the nth second electrode group, using the following formula, according to the The touch capacitance value of the second type touch electrode of the nth second electrode group determines the first weight of each second type touch electrode in the nth second electrode group;

   

   

   Wherein, 1≤n≤N, and n is an integer, ω _1n-21 represents the first weight of the first touch electrode in the nth second electrode group, and ω _1n-22 represents the nth The first weight of the second touch electrode in the second electrode group, C _1n-21 represents the touch capacitance value of the first touch electrode in the nth second electrode group, C _{1n -22} represents the touch capacitance value of the second touch electrode in the nth second electrode group.
7. The touch positioning method according to claim 6, wherein in the nth second electrode group, the first weight ω _1n-23 of the third touch electrode is

   
8. The touch positioning method according to claim 6 or 7, wherein the following formula is used, according to the first weight corresponding to the nth second electrode group, and the first weight of the nth second electrode group The position coordinates of the touch electrode (x _1n-21 , y _1n-21 ), the position coordinates of the second touch electrode (x _1n-22 , y _1n-22 ), and the position coordinates of the third touch electrode ( x _1n-23 , y _{1n-23 ), determine the centroid coordinates (x n-2} , y _n-2 ) of the triangle corresponding to the n-th second electrode group:

   x _n-2 =ω _1n-21 *x _1n-21 +ω _1n-22 *x _1n-22 +ω _1n-23 *x _1n-23 ;

   y _n-2 =ω _1n-21 *y _1n-21 +ω _1n-22 *y _1n-22 +ω _1n-23 *y _1n-23 .
9. 8. The touch positioning method according to any one of claims 2-8, wherein the touch electrodes in the touch area are divided into a first type of touch electrode and a second type of touch electrode; wherein, the The touch electrodes of the first type and the touch electrodes of the second type have different areas;

   The electrode group includes K third electrode groups; wherein, in the third electrode group, the first touch electrode, the second touch electrode, and the third touch electrode are all used as the first type of touch electrode. Control electrode or the second type touch electrode; K is an integer greater than or equal to 1;

   The determining the first weight of the touch electrode corresponding to the triangle according to the touch capacitance value of the touch electrode corresponding to the triangle specifically includes: for the kth third electrode group, using the following formula, according to the The touch capacitance value of each touch electrode in the kth third electrode group, determining the first weight of each touch electrode in the kth third electrode group;

   

   

   

   Wherein, 1≤k≤K, and k is an integer, ω _1k-31 represents the first weight of the first touch electrode in the kth third electrode group, and ω _1k-32 represents the kth The first weight of the second touch electrode in the third electrode group, ω _1k-33 represents the first weight of the third touch electrode in the kth third electrode group, C _{1k- 31} represents the touch capacitance value of the first touch electrode in the kth third electrode group, and C _1k-32 represents the value of the second touch electrode in the kth third electrode group Touch capacitance value, C _1k-33 represents the touch capacitance value of the third touch electrode in the kth third electrode group.
10. The touch positioning method according to claim 9, wherein the following formula is used, according to the first weight corresponding to the kth third electrode group, and the first touch control in the kth third electrode group The position coordinates of the electrodes (x _1k-31 , y _1k-31 ), the position coordinates of the second touch electrode (x _1k-32 , y _1k-32 ), and the position coordinates of the third touch electrode (x _{1k -33} , y _{1k-33 ), determine the centroid coordinates (x k-3} , y _k-3 ) of the triangle corresponding to the k-th second electrode group:

    x _k-3 =ω _1k-31 *x _1k-31 +ω _1k-32 *x _1k-32 +ω _1k-33 *x _1k-33 ;

    y _k-3 =ω _1k-31 *y _1k-31 +ω _1k-32 *y _1k-32 +ω _1k-33 *y _1k-33 .
11. The touch positioning method according to any one of claims 1-10, wherein the target touch coordinates (x ₀₁ , y ₀₁ ) are determined according to the centroid coordinates of all the triangles: where x ₀₁ is all the coordinates The average value of the abscissa in the centroid coordinates of _{the triangle, and y 01} is the average value of the ordinate in the centroid coordinates of all the triangles.
12. 10. The touch positioning method according to any one of claims 1-10, wherein the determining the target touch coordinates according to the centroid coordinates of all the triangles specifically comprises:

    For each of the triangles, determine the second weight corresponding to the triangle according to the touch capacitance values of all touch electrodes corresponding to the triangle;

    The target touch coordinate is determined according to the centroid coordinates of all the triangles and their corresponding second weights.
13. The touch positioning method according to claim 12, wherein for the qth triangle, the following formula is used to determine the qth triangle according to the touch capacitance values of all touch electrodes corresponding to the qth triangle The corresponding second weight ω _2-q ;

    

    Wherein, Q represents the total number of triangles, and C _q represents the sum of touch capacitance values of all touch electrodes corresponding to the qth triangle.
14. The touch positioning method according to claim 13, wherein the following formula is used to determine the target touch coordinates (x ₀₂ , y ₀₂ ) according to the centroid coordinates of all the triangles and their corresponding second weights;

    

    

    Wherein, x _4-q represents the abscissa in the centroid coordinates of the qth triangle, and y _4-q represents the ordinate in the centroid coordinates of the qth triangle.
15. A touch positioning device, which includes:

    The capacitance value determination circuit is configured to obtain the position coordinates and the touch capacitance value of each touch electrode in the touch area; wherein the touch capacitance value is the capacitance value between the touch body and the touch electrode ；

    The triangle determination circuit is configured to take the three touch electrodes in the touch area as an electrode group, and sequentially connect the centers of the touch electrodes in each electrode group into a triangle; wherein, any two The triangles do not overlap;

    The centroid coordinate determination circuit is configured to determine the centroid coordinates of the triangle according to the touch capacitance value and position coordinates of the touch electrode corresponding to the triangle for each of the triangles;

    The touch coordinate determination circuit is configured to determine the target touch coordinate according to the centroid coordinates of all the triangles.
16. A computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the touch positioning method according to any one of claims 1-14 when the computer program is executed by a processor.
17. A computer device, comprising a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the processor executes the computer program to implement any one of claims 1-14 The steps of the touch positioning method described above.

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