CN113692569A

CN113692569A - Touch positioning method and device

Info

Publication number: CN113692569A
Application number: CN202080000296.0A
Authority: CN
Inventors: 林正日; 韩文超; 尹晓峰; 张良浩; 王新秋; 王鸣明; 冯薏霖; 王鑫乐; 孙伟
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2021-11-23
Anticipated expiration: 2040-03-17
Also published as: WO2021184209A1; CN113692569B

Abstract

The touch positioning method and device provided by the embodiment of the disclosure include: acquiring a position coordinate and a touch capacitance value of each touch electrode in a touch area; taking three touch electrodes in the touch area as an electrode group, and sequentially connecting the centers of the touch electrodes in each electrode group into a triangle; wherein any two triangles are not overlapped; for each triangle, determining a centroid coordinate of the triangle according to the touch capacitance value and the position coordinate of the touch electrode corresponding to the triangle; and determining target touch coordinates according to the centroid coordinates of all the triangles.

Description

Touch positioning method and device

Technical Field

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

Background

With the development of touch technology, a touch screen with a touch function is widely applied to various display products such as mobile phones, tablet computers, information query machines in halls of public places and the like as an information input tool. Therefore, the user can operate the electronic equipment by only touching the touch screen with fingers or a touch pen and the like, dependence of the user on other equipment (such as a keyboard, a mouse and the like) is eliminated, and man-machine interaction is simpler. However, how to improve the touch precision is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The touch positioning method provided by the embodiment of the disclosure comprises the following steps:

acquiring a position coordinate and a touch capacitance value of each touch electrode in a touch area;

taking three touch electrodes in the touch area as an electrode group, and sequentially connecting the centers of the touch electrodes in each electrode group into a triangle; wherein any two of the triangles are non-overlapping;

for each triangle, determining a centroid coordinate of the triangle according to the touch capacitance value and the position coordinate of the touch electrode corresponding to the triangle;

and determining target touch coordinates according to the centroid coordinates of all the triangles.

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

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

and determining the centroid coordinate of the triangle according to the first weight and the position coordinate of the touch electrode corresponding to the triangle.

Optionally, in this embodiment of the present disclosure, the touch electrodes in the touch area are divided into a first type of touch electrodes and a second type of touch electrodes; the first type of touch control electrode and the second type of touch control electrode are different in area;

the electrode sets comprise M first electrode sets; in the first electrode group, a first touch electrode and a second touch electrode are both used as the first type of touch electrode, and a third touch electrode is used as the second type of touch electrode; m is an integer greater than or equal to 1;

determining a 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 an mth first electrode group, determining a first weight of each first-type touch electrode in the mth first electrode group according to a touch capacitance value of the first-type touch electrode in the mth first electrode group by using the following formula;

wherein M is not less than 1 and not more than M, and M is an integer omega_1m-11Represents a first weight, ω, of said first touch electrode of said mth first electrode group_1m-12A first weight, C, representing the second touch electrode in the mth first electrode group_1m-11Represents a touch capacitance value, C, of the first touch electrode in the mth first electrode group_1m-12And the touch capacitance value represents the touch capacitance value of the second touch electrode in the mth first electrode group.

Optionally, in this embodiment of the disclosure, in the mth first electrode group, the first weight ω of the third touch electrode is smaller than the first weight ω of the first touch electrode_1m-13Is composed of

Optionally, in this embodiment of the disclosure, the following formula is adopted, according to the first weight corresponding to the mth first electrode group, and the position coordinate (x) of the first touch electrode in the mth first electrode group_1m-11，y _1m-11) Position coordinate (x) of the second touch electrode_1m-12，y _1m-12) And the position coordinate (x) of the third touch electrode_1m-13，y _1m-13) Determining the centroid coordinate (x) of the triangle corresponding to the mth first electrode group_m-1，y _m-1)：

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。

the electrode sets comprise N second electrode sets; in the second electrode group, the first touch electrode and the second touch electrode are both used as the second type of touch electrode, and the third touch electrode is used as the first type of touch electrode; n is an integer greater than or equal to 1;

determining a 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 an nth second electrode group, determining a first weight of each second type touch electrode in the nth second electrode group according to a touch capacitance value of the second type touch electrode in the nth second electrode group by using the following formula;

wherein N is not less than 1 and not more than N, and N is an integer omega_1n-21A first weight, ω, of the first touch electrode in the nth second electrode group_1n-22A first weight, C, representing the second touch electrode in the nth second electrode group_1n-21Represents a touch capacitance value, C, of the first touch electrode in the nth second electrode group_1n-22And the touch capacitance value represents the touch capacitance value of the second touch electrode in the nth second electrode group.

Optionally, in this embodiment of the disclosure, in the nth second electrode group, the first weight ω of the third touch electrode is smaller than the first weight ω of the third touch electrode_1n-23Is composed of

Optionally, in this embodiment of the disclosure, the following formula is adopted, according to the first weight corresponding to the nth second electrode group and the position coordinate (x) of the first touch electrode in the nth second electrode group_1n-21，y _1n-21) Position coordinate (x) of the second touch electrode_1n-22，y _1n-22) And the position coordinate (x) of the third touch electrode_1n-23，y _1n-23) Determining the centroid coordinate (x) of the triangle corresponding to the nth second electrode group_n-2，y _n-2)：

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。

the electrode sets comprise K third electrode sets; in the third electrode group, a first touch electrode, a second touch electrode and a third touch electrode are all used as the first type of touch electrode or the second type of touch electrode; k is an integer greater than or equal to 1;

determining a 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: determining a first weight of each touch electrode in a kth third electrode group according to a touch capacitance value of each touch electrode in the kth third electrode group by using the following formula;

wherein K is not less than 1 and not more than K, and K is an integer omega_1k-31A first weight, ω, of the first touch electrode in the kth third electrode group_1k-32Represents a first weight, ω, of the second touch electrode in the kth third electrode group_1k-33A first weight, C, representing the third touch electrode in the kth third electrode group_1k-31Represents a touch capacitance value, C, of the first touch electrode in the kth third electrode group_1k-32Represents a touch capacitance value, C, of the second touch electrode in the kth third electrode group_1k-33Represents a touch capacitance value of the third touch electrode in the kth third electrode group.

Optionally, in this embodiment of the disclosure, the following formula is adopted, according to the first weight corresponding to the kth third electrode group and the position coordinate (x) of the first touch electrode in the kth third electrode group_1k-31，y _1k-31) Position coordinate (x) of the second touch electrode_1k-32，y _1k-32) And the position coordinate (x) of the third touch electrode_1k-33，y _1k-33) Determining the centroid coordinate (x) of the triangle corresponding to the kth second electrode group_k-3，y _k-3)：

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 this embodiment of the disclosure, the target touch coordinate (x) is determined according to the coordinates of the centroid of all the triangles₀₁，y ₀₁): wherein x is₀₁Is the average of the abscissas in the coordinates of the centers of mass of all the triangles, y₀₁Is the average of the ordinate in the coordinates of the centers of mass of all the triangles.

Optionally, in this embodiment of the present disclosure, the determining a target touch coordinate according to the coordinates of the centers of mass of all the triangles specifically includes:

for each triangle, determining a second weight corresponding to the triangle according to the touch capacitance values of all the touch electrodes corresponding to the triangle;

and determining the target touch coordinate according to the centroid coordinates of all the triangles and the corresponding second weights.

Optionally, in this embodiment of the disclosure, for a q-th triangle, a following formula is adopted, and according to touch capacitance values of all touch electrodes corresponding to the q-th triangle, a second weight ω corresponding to the q-th triangle is determined_2-q；

Wherein Q represents the total number of triangles C_qAnd the sum of the touch capacitance values of all the touch electrodes corresponding to the q-th triangle is represented.

Optionally, in this embodiment of the disclosure, the following formula is adopted, and the determination of the triangle is performed according to the centroid coordinates of all the triangles and the corresponding second weights thereofTarget touch coordinate (x)₀₂，y ₀₂)；

Wherein x is_4-qRepresents the abscissa, y, of the coordinates of the centroid of said q-th triangle_4-qRepresents the ordinate in the centroid coordinates of the q-th triangle.

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

a capacitance value determination circuit configured to acquire a position coordinate and a touch capacitance value of each touch electrode in the touch area; the touch capacitance value is a capacitance value between a touch main body and the touch electrode;

a triangle determination circuit configured to use three touch electrodes in the touch area as an electrode group, and sequentially connect centers of the touch electrodes in each electrode group to form a triangle; wherein any two of the triangles are non-overlapping;

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

a touch coordinate determination circuit configured to determine a target touch coordinate from the centroid coordinates of all the triangles.

The computer readable storage medium further provided in the embodiments of the present disclosure stores a computer program thereon, and the computer program, when executed by a processor, implements the steps of the touch positioning method.

The computer device further includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the touch positioning method when executing the computer program.

Drawings

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

FIG. 2 is a flow chart of some touch location methods in an embodiment of the present disclosure;

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

fig. 4 is a schematic structural diagram of a touch screen according to an embodiment of the present disclosure when a finger touches the touch screen;

FIG. 5 is a schematic view of some of the structures of the AA region of FIG. 4;

fig. 6 is another schematic structural diagram of the touch screen according to the embodiment of the disclosure when a finger touches the touch screen;

FIG. 7 is a schematic view of some of the structures of the AA region of FIG. 6;

FIG. 8 is another schematic view of the AA region of FIG. 4;

FIG. 9 is a flow chart of yet another touch location method in an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of some touch position determination devices in the embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. And the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that the sizes and shapes of the various figures in the drawings are not to scale, but are merely intended to illustrate the present disclosure. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In practical application, the touch screen can realize a touch function by adopting a mutual capacitance technology through the mutual capacitance technology. The touch screen can also realize the touch function by adopting the self-capacitance technology through the self-capacitance technology. And the touch screen can also realize the touch function by adopting the 3D touch capacitance technology through the 3D touch capacitance technology.

As shown in fig. 1, a touch screen that uses a mutual capacitance technology to realize a touch function is illustrated. The touch screen may include: the touch panel includes 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. The second touch electrode rows 120 and the first touch electrode rows 110 are alternately arranged along the second direction F2. For example, 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 of the second touch electrodes 121 extends along the first direction F1 and is arranged 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 of the first touch electrodes 111 extends along the second direction F2 and is arranged along the first direction F1. 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 4 first touch electrodes 111. In practical applications, the area of the second touch electrode 121 may be 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 a plurality of first transmission lines and a plurality of second transmission lines electrically connected with the driving circuit. One of the second touch electrodes 121 is electrically connected to one of the second transmission lines, so that signal transmission between the driving circuit and the second touch electrode 121 is realized through the second transmission line. In addition, a first touch electrode 111 is electrically connected to a first transmission line, so that signal transmission between the driving circuit and the first touch electrode 111 is realized through the first transmission line.

As shown in fig. 2, the touch positioning method provided in the embodiment of the present disclosure may include the following steps:

s10, acquiring the position coordinates and the touch capacitance value of each touch electrode in the touch area; the touch capacitance value is a capacitance value between the touch electrode and the ground;

s20, taking three touch electrodes in the touch area as an electrode group, and sequentially connecting the centers of the touch electrodes in each electrode group into a triangle; wherein any two triangles are not overlapped;

s30, determining the centroid coordinates of the triangles according to the touch capacitance values and the position coordinates of the touch electrodes corresponding to the triangles for each triangle;

and S40, determining target touch coordinates according to the centroid coordinates of all the triangles.

According to the touch positioning method provided by the embodiment of the disclosure, the position coordinates and the touch capacitance value of each touch electrode in the touch area are obtained, three touch electrodes in the touch area are set to be an electrode group, and the central sequential line of the touch electrodes in each electrode group is a triangle. Since any two triangles do not overlap, the occurrence of repeated triangles can be avoided. Then, for each triangle, the centroid coordinate of the triangle may be determined according to the touch capacitance value and the position coordinate of the touch electrode corresponding to the triangle. Therefore, the target touch coordinate can be determined according to the centroid coordinates of all the triangles. Therefore, in the embodiment of the present disclosure, by performing triangle division on the touch electrodes in the touch area, the centroid coordinates of the triangle can be determined according to the touch capacitance values and the position coordinates of the touch electrodes corresponding to the triangle, so that the target touch coordinates with higher touch precision can be determined according to the centroid coordinates of all triangles, and the touch precision is improved.

It should be noted that any two triangles do not overlap, and it may mean that at most two vertices shared by any two triangles are present. That is, 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, the position coordinates of each touch electrode in the touch area may be determined using a method in the related art.

Generally, a finger is usually used to touch the touch screen for touch operation. For example, the touch body in the embodiments of the present disclosure may be configured as a finger. Of course, in practical applications, the touch main body may be provided as another object capable of performing touch operation, and is not limited herein.

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

In practical applications, an equivalent plate capacitor is formed between the touch electrode and the ground, as shown in fig. 3, one electrode CK of the plate capacitor is the touch electrode, and the other electrode SZ is the ground. When a touch body of a conductor touches the touch screen, a capacitor is connected in parallel with the plate capacitor, so that the total capacitance of the plate capacitor is changed. Taking the touch body as the finger FZ for example, when the finger touches the touch screen, the finger and the touch electrode also form a capacitance, and the capacitance formed by the finger and the touch electrode is connected in parallel to the plate capacitor. Therefore, the capacitance value formed by each touch electrode and the ground and the capacitance value formed by the touch electrode and the finger after being connected in parallel in the touch area where the finger is located can be detected, so that the detected capacitance value can be used as the touch capacitance value between the touch main body and the touch electrode.

And, calculating formula C ═ S/d according to the capacitance value of the plate capacitor, where ∈ represents a dielectric constant between two electrodes of the plate capacitor, S represents a facing area between the two electrodes of the plate capacitor, and d represents a distance between the two electrodes of the plate capacitor. In practical applications, when a finger touches the touch screen, the distances between the finger and the touch electrodes can be regarded as approximately the same, and therefore, if the areas of the touch electrodes are different, the detected capacitance values of the plate capacitors equivalent to the touch electrodes and the finger 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 equivalent plate capacitor between the second touch electrode 121 and the finger is different from the capacitance value of the equivalent plate capacitor between the first touch electrode 111 and the finger.

In specific implementation, the touch electrode in the embodiment of the present disclosure may be an electrode that implements a touch function by using a mutual capacitance technology. Further, the touch screen is an embedded display touch screen, that is, the touch screen can also realize a display function. Therefore, the mutual capacitance technology and the display technology can be combined, 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 coordinates of the centroid of the triangle specifically may include the following steps:

For example, each triangle determines the first weight of the touch electrode corresponding to the triangle, so that the centroid coordinates of the triangles can be determined according to the touch electrode and the position coordinates corresponding to the triangles, and then the target touch position is determined according to the centroid of the triangle. Therefore, the touch control electrode is split into triangles, and the accuracy of touch control can be improved by a positioning method of determining the coordinates of the mass center of the triangles through weighting. Particularly, the problem of low touch accuracy caused by different areas of the first touch electrode and the second touch electrode can be solved.

In specific implementation, the touch electrodes in the embodiments of the present disclosure may include a first touch electrode and a second touch electrode as shown in fig. 1. In the embodiment of the present disclosure, the touch electrodes in the touch area may be divided into a first type of touch electrodes and a second type of touch electrodes; the first type of touch control electrode and the second type of touch control electrode are different in area. For example, the area of the first type of touch electrode may be smaller than the area of the second type of touch electrode. For example, the first touch electrodes may be classified into a first type of touch electrodes, and the second touch electrodes may be classified into a second type of touch electrodes. Of course, this disclosure includes but is not limited to such. In the following, the first touch electrodes are divided into the first type of touch electrodes, and the second touch electrodes are divided into the second type of touch electrodes.

In particular implementation, in the disclosed embodiments, the electrode sets may include M first electrode sets Zm-1(M is an integer greater than or equal to 1, 1 ≦ M, and M is an integer); in the first electrode group Zm-1, the first touch electrode and the second touch electrode are both used as the first type of touch electrode, and the third touch electrode is used as the second type of touch electrode. That is, in the first electrode group Zm-1, two touch electrodes are the first touch electrode, and the other touch electrode is the second touch electrode.

In addition, in a specific implementation, in this embodiment 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: determining a first weight of each first-class touch electrode in the mth first electrode group according to the touch capacitance value of the first-class touch electrode in the mth first electrode group by adopting the following formula;

wherein M is not less than 1 and not more than M, and M is an integer omega_1m-11Represents a first weight, ω, of a first touch electrode in the mth first electrode group_1m-12Represents a first weight, C, of a second touch electrode in the mth first electrode group_1m-11Represents the touch capacitance value of the first touch electrode in the mth first electrode group, C_1m-12Representing the touch capacitance of the second touch electrode in the mth first electrode group.

In this embodiment, in the mth first electrode group, the third touch electrode has the first weight ω_1m-13Is composed of

Since only one second-type touch electrode is disposed in the mth first electrode group, the first weight ω of the second-type touch electrode can be set_1m-13Is arranged as

In practice, in the embodiment of the present disclosure, the following formula is adopted according to the m-thA first weight corresponding to the first electrode group, and a position coordinate (x) of a first touch electrode in the mth first electrode group_1m-11，y _1m-11) Position coordinate (x) of the second touch electrode_1m-12，y _1m-12) And the position coordinate (x) of the third touch electrode_1m-13，y _1m-13) Determining the centroid coordinate (x) of the triangle corresponding to the mth first electrode group_m-1，y _m-1)：

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 particular implementation, in the embodiments of the present disclosure, the target touch coordinate (x) is determined according to the coordinates of the centroid of all triangles₀₁，y ₀₁): wherein x is₀₁Is the average of the abscissas in the coordinates of the centers of mass of all triangles, y₀₁Is the average of the ordinate in the coordinates of the centroid of all triangles. In this way, the average value of the abscissa in the centroid coordinates of all the triangles can be used as the abscissa of the target touch coordinate, and the average value of the ordinate in the centroid coordinates of all the triangles can be used as the ordinate of the target touch coordinate.

A typical in-cell display touch screen further includes a plurality of pixels arranged in an array. After the target touch coordinate is determined, the target touch coordinate is required to be applied to display. Since the display is performed by pixels, the target touch coordinates need to be mapped to the positions of the pixels. For example, a user draws a line on a display touch screen by a finger, and after detecting a target touch coordinate, the line needs to be displayed on the screen, and the display needs to be performed by using pixels at corresponding positions. In specific implementation, after determining the target touch coordinate, the method may further include: according to target touch coordinates and in advanceAnd determining the position coordinates of the pixels to be displayed in the touch screen according to the determined scale coefficient. Illustratively, the position coordinates (x) of the pixels to be displayed in the touch screen are displayed_p0，y _p0) Comprises the following steps: x is the number of_p0＝βx ₀₁，y _p0＝βy ₀₁. Beta represents a predetermined scaling factor. In practical applications, the predetermined scaling factor β may be: 10. 20, 30, 40, 50, 60, 70, 80, 90, 100, etc. Of course, the predetermined scaling factor β may also be designed according to the actual application requirements, and is not limited herein.

In the following, the touch positioning method provided by the embodiments of the present disclosure is explained with reference to fig. 4 and fig. 5 in combination with specific implementation.

Illustratively, CB represents a touch area formed when a finger touches the touch screen, as shown in fig. 4 and 5. First touch electrodes X13, X14, X15, X16, X17, X18, X19, X20, and second touch electrode Y12 in an AA area in a touch area CB are selected, and first touch electrodes X14, X15, X18, X19, and second touch electrode Y12 are taken as examples for explanation.

The touch positioning method provided by the embodiment of the disclosure may include the following steps:

(1) and acquiring the position coordinates and the touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates (X) of the first touch electrode X14 may be acquired by a method in the related art_X14，y _X14) Position coordinate (X) of the first touch electrode X15_X15，y _X15) Position coordinate (X) of the first touch electrode X18_X18，y _X18) Position coordinate (X) of the first touch electrode X19_X19，y _X19) And the position coordinate (x) of the second touch electrode Y12_Y12，y _Y12). And acquiring the touch capacitance value C of the first touch electrode X14_X14Touch capacitance C of the first touch electrode X15_X15Touch capacitance of the first touch electrode X18C _X18Touch capacitance C of the first touch electrode X19_X19And touch capacitance C of the second touch electrode Y12_Y2。

(2) Three touch electrodes in the touch area are used as an electrode group, and the electrode group can comprise M first electrode groups; in the first electrode group, the first touch electrode and the second touch electrode are both used as first type touch electrodes, and the third touch electrode is used as a second type touch electrode. And sequentially connecting the centers of the touch electrodes in each first electrode group into a triangle.

Illustratively, the electrode groups may include 2 first electrode groups: namely the 1 st first electrode group Z1-1 and the 2 nd first electrode group Z2-1. The 1 st first electrode group Z1-1 has first touch electrodes X19, X18 and a second touch electrode Y12. 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 sequentially connected to form a triangle S1-1.

And, the 2 nd first electrode group Z2-1 has first touch electrodes X14 and X15 and a second touch electrode Y12 therein. 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 sequentially connected to form a triangle S2-1.

(3) For the 1 st first electrode group Z1-1, taking the example that in the 1 st first electrode group Z1-1, the first touch electrode X18 is the first touch electrode, the first touch electrode X19 is the second touch electrode, and the second touch electrode Y12 is the third touch electrode, the first weight ω of the first touch electrode X18 is_11-11Comprises the following steps:

first weight ω of first touch electrode X19_11-12Comprises the following steps:

first of the second touch electrode Y12A weight ω_11-13Is composed of

Wherein, C_11-11＝ C _X18，C _11-12＝C _X19。

For the 2 nd first electrode group Z2-1, taking the example that the first touch electrode X14 is the first touch electrode and the first touch electrode X15 is the second touch electrode in the 2 nd first electrode group Z2-1, the first weight ω of the first touch electrode X14 is_12-11Comprises the following steps:

first weight ω of first touch electrode X15_12-12Comprises the following steps:

first weight ω of the second touch electrode Y12_12-13Is composed of

Wherein, C_12-11＝C _X14，C _12-12＝C _X15。

(4) Centroid coordinates (x) of triangle S1-1 corresponding to the 1 st first electrode group Z1-1_1-1，y _1-1) Comprises the following steps: x is the number of_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. Wherein x is_11-11＝x _X18，x _11-12＝x _X19，x _11-13＝x _Y12。y _11-11＝y _X18，y _11-12＝y _X19，y _11-13＝y _Y12。

Centroid coordinates (x) of triangle S2-1 corresponding to the 2 nd first electrode group Z2-1_2-1，y _2-1) Comprises the following steps: x is the number of_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. Wherein x is_12-11＝x _X14，x _12-12＝x _X15，x _12-13＝x _Y12。y _12-11＝y _X14，y _12-12＝y _X15，y _12-13＝y _Y12。

(5) According to the coordinates of the mass center of all the triangles, namely the coordinates (x) of the mass center of the triangle S1-1_1-1，y _1-1) And the centroid coordinate (x) of triangle S2-1_2-1，y _2-1) Determining target touch coordinates (x)₀₁，y ₀₁). Wherein the content of the first and second substances,

also, simulation was performed for the 1 st first electrode group Z1-1 and the 2 nd first electrode group Z2-1. If the actual touch position coordinate is (x)₀，y ₀) Is (4, 4.5). Wherein, C_X18＝10，C _X19＝5，C _X14＝7，C _X15＝2，C _Y212, the position coordinate (X) of the first touch electrode X18_X18，y _X18) Is (3, 4), the position coordinate (X) of the first touch electrode X19_X19，y _X19) Is (3, 5),position coordinate (X) of first touch electrode X14_X14，y _X14) Is (5, 4), the position coordinate (X) of the first touch electrode X15_X15，y _X15) And (5, 5), the position coordinate of the second touch electrode Y12 is (4, 4.5).

Therefore, the first weight ω of the first touch electrode X18_11-111/3, the first weight ω of the first touch electrode X19_11-121/6, the first weight ω of the second touch electrode Y12_11-131/2. The centroid coordinates (3.5, 4.417) of the triangle S1-1 corresponding to the 1 st first electrode group Z1-1 can be obtained.

And, the first weight ω of the first touch electrode X14_12-117/18, the first weight ω of the first touch electrode X15_12-121/9, the first weight ω of the second touch electrode Y12_12-131/2. The centroid coordinates (4.5, 4.36) of the triangle S2-1 corresponding to the 2 nd first electrode group Z2-1 can be obtained.

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

i.e., Er1 ═ 0.111. Therefore, the error rate is small, and the touch accuracy can be improved.

In addition, the position coordinates (x) of the pixels to be displayed in the touch screen are displayed_p0，y _p0) And the target touch coordinates (4, 4.389), see table 1 below.

Coefficient of proportionality beta	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 for some of the embodiments described above. Only the differences between the present embodiment and the above embodiments will be described below, and the descriptions of the same parts will be omitted.

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

In addition, in a specific implementation, in this embodiment 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: determining a first weight of each second type touch electrode in the nth second electrode group according to the touch capacitance value of the second type touch electrode in the nth second electrode group by adopting the following formula;

wherein N is not less than 1 and not more than N, and N is an integer omega_1n-21Represents the nth of the second electrode groupFirst weight, ω, of a touch electrode_1n-22A first weight representing a second touch electrode in the nth second electrode group, C_1n-21Represents the touch capacitance value of the first touch electrode in the nth second electrode group, C_1n-22The touch capacitance value of the second touch electrode in the nth second electrode group is represented.

In this embodiment, the first weight ω of the third touch electrode in the nth second electrode group is smaller than the first weight ω of the first touch electrode in the nth second electrode group_1n-23Is composed of

Since only one first-type touch electrode is disposed in the nth second electrode group, the first weight ω of the first-type touch electrode can be set_1n-23Is arranged as

In specific implementation, in the embodiment of the present disclosure, the following formula is adopted, according to the first weight corresponding to the nth second electrode group and the position coordinate (x) of the first touch electrode in the nth second electrode group_1n-21，y _1n-21) Position coordinate (x) of the second touch electrode_1n-22，y _1n-22) And the position coordinate (x) of the third touch electrode_1n-23，y _1n-23) Determining the centroid coordinate (x) of the triangle corresponding to the nth second electrode group_n-2，y _n-2): wherein x is_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, the touch positioning method provided by the embodiment of the present disclosure is explained with reference to fig. 6 and fig. 7 in combination with specific implementation.

Illustratively, CB represents a touch area formed when a finger touches the touch screen, as shown in fig. 6 and 7. And the first touch electrodes X12-X20 and the second touch electrodes Y65 and Y66 in the AA area in the touch area CB are selected. The first touch electrodes X8 and X9 and the second touch electrodes Y65 and Y66 are taken as examples for explanation.

(1) and acquiring the position coordinates and the 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, the position coordinates (xY66, yY66) of the second touch electrode Y66, and the position coordinates (xY65, yY65) of the second touch electrode Y65 may be acquired by a method in the related art. And acquiring the touch capacitance value C of the first touch electrode X8_X8Touch capacitance C of the first touch electrode X9_X9Touch capacitance C of the second touch electrode Y65_Y65And touch capacitance C of the second touch electrode Y66_Y66。

(2) Three touch electrodes in the touch area are used as an electrode group, and the electrode group can comprise M first electrode groups and N second electrode groups; in the first electrode group, the first touch electrode and the second touch electrode are both used as first type touch electrodes, and the third touch electrode is used as a second type touch electrode. And sequentially connecting the centers of the touch electrodes in each first electrode group into a triangle. In the second electrode group, the first touch electrode and the second touch electrode are both used as the second type of touch electrode, and the third touch electrode is used as the first type of touch electrode.

Illustratively, the electrode groups may include 1 first electrode group and 1 second electrode group: namely the 1 st first electrode group Z1-1 and the 1 st second electrode group Z1-2. The 1 st first electrode group Z1-1 has first touch electrodes X8, X9 and a second touch electrode Y66. 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 sequentially connected to form a triangle S1-1.

And, the 1 st second electrode group Z1-2 has a first touch electrode X9 and second touch electrodes Y65 and Y66. 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 sequentially connected to form a triangle S1-2.

(3) For the 1 st first electrode group Z1-1, taking the example that in the 1 st first electrode group Z1-1, the first touch electrode X8 is the first touch electrode, the first touch electrode X9 is the second touch electrode, and the second touch electrode Y66 is the third touch electrode, the first weight ω of the first touch electrode X8 is_11-11Comprises the following steps:

first weight ω of first touch electrode X9_11-12Comprises the following steps:

first weight ω of the second touch electrode Y66_11-13Is composed of

Wherein, C_11-11＝C _X8，C _11-12＝C _X9。

For the 1 st second electrode group Z1-1, in the 1 st second electrode group Z1-2, the second touch electrode Y65 is the first touch electrode, the second touch electrode Y66 is the second touch electrode, the first touch electrode X9 is the third touch electrode, and the first weight ω of the second touch electrode Y65 is exemplified_11-21Comprises the following steps:

first weight ω of the second touch electrode Y66_11-22Comprises the following steps:

first weight ω of first touch electrode X9_11-23Is composed of

Wherein, C_11-21＝C _Y65，C _11-22＝C _Y66。

(4) Centroid coordinates (x) of triangle S1-1 corresponding to the 1 st first electrode group Z1-1_1-1，y _1-1) Comprises the following steps: x is the number of_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. Wherein x is_11-11＝x _X8，x _11-12＝x _X9，x _11-13＝x _Y66。y _11-11＝y _X8，y _11-12＝y _X9，y _11-13＝y _Y66。

Centroid coordinates (x) of triangle S1-2 corresponding to the 1 st second electrode group Z1-2_1-2，y _1-2) Comprises the following steps: x is the number of_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. Wherein x is_11-21＝x _Y65，x _11-22＝x _Y66，x _11-23＝x _X9。y _11-21＝y _Y65，y _11-22＝y _Y66，y _11-23＝y _X9。

(5) According to the coordinates of the mass center of all the triangles, namely the coordinates (x) of the mass center of the triangle S1-1_1-1，y _1-1) And the centroid coordinate (x) of triangle S1-2_1-2，y _1-2) Determining target touch coordinates (x)₀₁，y ₀₁). Wherein the content of the first and second substances,

In particular implementation, in the embodiments of the present disclosure, the electrode sets include K third electrode sets Zk-3(K is an integer greater than or equal to 1, K is greater than or equal to 1 and less than or equal to K, and K is an integer); in the third electrode group Zk-3, the first touch electrode, the second touch electrode, and the third touch electrode may all be 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 the second type touch electrode. In the third electrode group Zk-3, the first touch electrode, the second touch electrode, and the third touch electrode can all be the first type of touch electrode.

In addition, in a specific implementation, in this embodiment 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: determining a first weight of each touch electrode in the kth third electrode group according to the touch capacitance value of each touch electrode in the kth third electrode group by adopting the following formula;

wherein K is not less than 1 and not more than K, and K is an integer omega_1k-31Represents a first weight, ω, of a first touch electrode in the kth third electrode group_1k-32Represents a first weight, ω, of a second touch electrode in the kth third electrode group_1k-33A first weight, C, representing a third touch electrode in the kth third electrode group_1k-31Represents the touch capacitance value of the first touch electrode in the kth third electrode group, C_1k-32Represents the touch capacitance value of the second touch electrode in the kth third electrode group, C_1k-33Representing the touch capacitance of the third touch electrode in the kth third electrode group.

In specific implementation, in the embodiment 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) of the first touch electrode in the kth third electrode group_1k-31，y _1k-31) Position coordinate (x) of the second touch electrode_1k-32，y _1k-32) And the position coordinate (x) of the third touch electrode_1k-33，y _1k-33) Determining the centroid coordinate (x) of the triangle corresponding to the kth second electrode group_k-3，y _k-3)：

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, the touch positioning method provided by the embodiments of the present disclosure is explained with reference to fig. 4 and fig. 8 in combination with specific implementation.

Illustratively, CB represents a touch area formed when a finger touches the touch screen, as shown in fig. 4 and 8. First touch electrodes X13, X14, X15, X16, X17, X18, X19, X20, and a second touch electrode Y12 in an AA area in a touch area CB are selected, and the first touch electrodes X14, X15, X18, and X19 are taken as examples for explanation.

(1) and acquiring the position coordinates and the touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates (X) of the first touch electrode X14 may be acquired by a method in the related art_X14，y _X14) Position coordinate (X) of the first touch electrode X15_X15，y _X15) Position coordinate (X) of the first touch electrode X18_X18，y _X18) Position coordinate (X) of the first touch electrode X19_X19，y _X19) And the position coordinate (x) of the second touch electrode Y12_Y12，y _Y12). And acquiring the touch capacitance value C of the first touch electrode X14_X14Touch capacitance C of the first touch electrode X15_X15Touch capacitance C of the first touch electrode X18_X18Touch capacitance C of the first touch electrode X19_X19And touch capacitance C of the second touch electrode Y12_Y2。

(2) Three touch electrodes in the touch area are used as an electrode group, and the electrode group can comprise K third electrode groups; 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. And sequentially connecting the centers of the touch electrodes in each third electrode group into a triangle.

Illustratively, the electrode groups may include 2 third electrode groups: namely the 1 st third electrode group Z1-3 and the 2 nd third electrode group Z2-3. The 1 st third electrode group Z1-3 has first touch electrodes X19, X18 and X15. Furthermore, 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 sequentially connected to form a triangle S1-3.

And, the 2 nd third electrode group Z2-3 has first touch electrodes X14 and X15 and X19. Furthermore, 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 sequentially connected to form a triangle S2-3.

(3) For the 1 st third electrode group Z1-3, taking the example that the first touch electrode X18 is the first touch electrode, the first touch electrode X19 is the second touch electrode, and the first touch electrode X15 is the third touch electrode in the 1 st third electrode group Z1-3, the first weight ω of the first touch electrode X18 is_11-31Comprises the following steps:

first weight ω of first touch electrode X19_11-32Comprises the following steps:

first weight ω of first touch electrode X15_11-33Comprises the following steps:

wherein, C_11-31＝CX ₁₈，C _11-32＝CX ₁₉，C _11-33＝CX ₁₅。

To is directed atThe 2 nd third electrode group Z2-3, in which the 2 nd third electrode group Z2-3, the first touch electrode X14 is the first touch electrode, the first touch electrode X15 is the second touch electrode, and the first touch electrode X19 is the third touch electrode, for example, the first weight ω of the first touch electrode X14 is_12-31Comprises the following steps:

first weight ω of first touch electrode X15_12-32Comprises the following steps:

first weight ω of first touch electrode X19_12-33Comprises the following steps:

wherein, C_12-31＝CX ₁₄，C _12-32＝CX ₁₅，C _12-33＝CX ₁₉。

(4) Centroid coordinates (x) of triangle S1-3 corresponding to the 1 st third electrode group Z1-3_1-3，y _1-3) Comprises the following steps: x is the number of_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. Wherein x is_11-31＝xX18，x _11-32＝xX19，x _11-33＝xX15。y _11-31＝yX18，y _11-32＝yX19，y _11-33＝yX15。

Centroid coordinates (x) of triangle S2-3 corresponding to the 2 nd third electrode group Z2-3_2-3，y _2-3) Comprises the following steps: x is the number of_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. Wherein x is_12-31＝xX14，x _12-32＝xX15，x _12-33＝xX19。y _12-31＝yX14， y _12-32＝yX15，y _12-33＝yX19。

(5) According to the coordinates of the centroid of all triangles, namely the coordinates (x) of the centroid of the triangle S1-3_1-3，y _1-3) And the centroid coordinate (x) of triangle S2-3_2-3，y _2-3) Determining target touch coordinates (x)₀₁，y ₀₁). Wherein the content of the first and second substances,

other touch positioning methods are provided in the embodiments of the present disclosure, as shown in fig. 9, which are modified for some of the embodiments described above. Only the differences between the present embodiment and the above embodiments will be described below, and the descriptions of the same parts will be omitted.

In specific implementation, in the embodiment of the present disclosure, the target touch coordinate is determined according to the coordinates of the centers of mass of all triangles, as shown in fig. 9, the method specifically includes the following steps:

s41, determining a second weight corresponding to each triangle according to the touch capacitance values of all the touch electrodes corresponding to the triangle for each triangle;

and S42, determining target touch coordinates according to the centroid coordinates of all the triangles and the corresponding second weights.

In specific implementation, in the embodiment of the present disclosure, for the q-th triangle, the following formula is adopted, and according to the touch capacitance values of all the touch electrodes corresponding to the q-th triangle, the second weight ω corresponding to the q-th triangle is determined_2-q；

Wherein Q represents the total number of triangles C_qRepresents the sum of the touch capacitance values of all the touch electrodes corresponding to the q-th triangle.

In specific implementation, in the embodiment of the present disclosure, the following formula is adopted, and the target touch coordinate (x) is determined according to the centroid coordinates of all the triangles and the second weights corresponding to the centroid coordinates₀₂，y ₀₂)；

Wherein x is_4-qRepresents the abscissa, y, of the coordinates of the centroid of the q-th triangle_4-qRepresents the ordinate in the centroid coordinate of the q-th triangle.

(1) And acquiring the position coordinates and the touch capacitance value of each touch electrode in the touch area CB. For example, the position coordinates (X) of the first touch electrode X14 may be acquired by a method in the related art_X14，y _X14) Position coordinate (X) of the first touch electrode X15_X15，y _X15) Position coordinate (X) of the first touch electrode X18_X18，y _X18) Position coordinate (X) of the first touch electrode X19_X19，y _X19) And of the second touch electrode Y12Position coordinates (x)_Y12，y _Y12). And acquiring the touch capacitance value C of the first touch electrode X14_X14Touch capacitance C of the first touch electrode X15_X15Touch capacitance C of the first touch electrode X18_X18Touch capacitance C of the first touch electrode X19_X19And touch capacitance C of the second touch electrode Y12_Y2。

first touch electrode X19Weight ω_11-12Comprises the following steps:

first weight ω of the second touch electrode Y12_11-13Is composed of

Wherein, C_11-11＝C _X18，C _11-12＝C _X19。

first weight ω of the second touch electrode Y12_12-13Is composed of

Wherein, C_12-11＝C _X14，C _12-12＝C _X15。

(5) Triangle S1-1 is taken as the 1 st triangle, and the second weight ω corresponding to the 1 st triangle S1-1_2-1Comprises the following steps:

wherein, C₁＝C _X18+C _X19+C _Y2，C ₂＝C _X14+C _X15+C _Y2。

Triangle S2-1 is taken as the 2 nd triangle, the second weight ω corresponding to the 2 nd triangle S2-1_2-2Comprises the following steps:

(6) according to the coordinates of the mass center of all the triangles, namely the coordinates (x) of the mass center of the triangle S1-1_1-1，y _1-1) Second weight ω corresponding to triangle S1-1_2-1And the centroid coordinate (x) of triangle S2-1_2-1，y _2-1) Second weight ω corresponding to triangle S2-1_2-2Determining target touch coordinates (x)₀₂，y ₀₂). Wherein x is₀₂＝ω _2-1*x _1-1+ω _2-2*x _2-1，y ₀₂＝ω _2-1*y _1-1+ω _2-2*y _2-1。

Also, simulation was performed for the 1 st first electrode group Z1-1 and the 2 nd first electrode group Z2-1. If the actual touch position coordinate is (x)₀，y ₀) Is (4, 4.5). Wherein, C_X18＝10，C _X19＝5，C _X14＝7，C _X15＝2，C _Y212, the position coordinate (X) of the first touch electrode X18_X18，y _X18) Is (3, 4), the position coordinate (X) of the first touch electrode X19_X19，y _X19) Is (3, 5), the position coordinate (X) of the first touch electrode X14_X14，y _X14) Is (5, 4), the position coordinate (X) of the first touch electrode X15_X15，y _X15) And (5, 5), the position coordinate of the second touch electrode Y12 is (4, 4.5).

And, the second weight ω of the triangle S1-1 corresponding to the 1 st first electrode group Z1-1_2-10.5625, the second weight ω of the triangle S2-1 corresponding to the 2 nd first electrode group Z2-1_2-20.4375, thus, x₀₂＝3.9375，y ₀₂4.392. The target touch coordinate is therefore (3.9375, 4.392).

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

i.e., Er2 ═ 0.125. Therefore, the error rate is small, and the touch accuracy can be improved.

It should be noted that, in the case of no conflict, the features in the above embodiments may be combined.

Based on the same inventive concept, an embodiment of the present disclosure further provides a device for determining a touch position, as shown in fig. 10, the device may include:

a capacitance value determination circuit 01 configured to acquire a position coordinate and a touch capacitance value of each touch electrode in the touch area; the touch capacitance value is a capacitance value between the touch main body and the touch electrode;

a triangle determining circuit 02 configured to use three touch electrodes in the touch area as an electrode group, and sequentially connecting centers of the touch electrodes in each electrode group into a triangle; wherein any two triangles are not overlapped;

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

a touch coordinate determination circuit 04 configured to determine a target touch coordinate from the centroid coordinates of all triangles.

It should be noted that any of the capacitance value determination circuit, the triangle determination circuit, the centroid coordinate determination circuit, and the touch coordinate determination circuit described above may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Of course, in practical applications, the design may be performed according to specific requirements, and is not limited herein.

It should be noted that the working principle and the specific implementation of the determining apparatus for a touch position are the same as those of the touch positioning method in the foregoing embodiment, and therefore, the driving method of the determining apparatus for a touch position may be implemented by referring to the specific implementation of the touch positioning method in the foregoing embodiment, and is not described herein again.

Based on the same inventive concept, the embodiment of the present disclosure further provides a computer device, which 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 executing the computer program.

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 the computer program, when executed by a processor, implements the steps of the touch positioning method provided by the embodiments of the present disclosure. Illustratively, the present disclosure may take the form of a computer program product embodied on one or more computer-readable storage media having computer-readable program code embodied therein.

As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-readable program code embodied therein. Computer-readable storage media include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present disclosure have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the disclosure.

It will be apparent to those skilled in the art that various changes and modifications may be made to the disclosed embodiments without departing from the spirit and scope of the disclosed embodiments. Thus, if such modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to encompass such modifications and variations.

Claims

A touch positioning method comprises the following steps:

acquiring a position coordinate and a touch capacitance value of each touch electrode in a touch area;

taking three touch electrodes in the touch area as an electrode group, and sequentially connecting the centers of the touch electrodes in each electrode group into a triangle; wherein any two of the triangles are non-overlapping;

for each triangle, determining a centroid coordinate of the triangle according to the touch capacitance value and the position coordinate of the touch electrode corresponding to the triangle;

and determining target touch coordinates according to the centroid coordinates of all the triangles.
The touch location method of claim 1, wherein the determining the coordinates of the centroid of the triangle specifically comprises the following steps:

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

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

the electrode sets comprise M first electrode sets; in the first electrode group, a first touch electrode and a second touch electrode are both used as the first type of touch electrode, and a third touch electrode is used as the second type of touch electrode; m is an integer greater than or equal to 1;

determining a 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 an mth first electrode group, determining a first weight of each first-type touch electrode in the mth first electrode group according to a touch capacitance value of the first-type touch electrode in the mth first electrode group by using the following formula;

wherein M is not less than 1 and not more than M, and M is an integer omega_1m-11Represents a first weight, ω, of said first touch electrode of said mth first electrode group_1m-12A first weight, C, representing the second touch electrode in the mth first electrode group_1m-11Represents a touch capacitance value, C, of the first touch electrode in the mth first electrode group_1m-12And the touch capacitance value represents the touch capacitance value of the second touch electrode in the mth first electrode group.
The touch positioning method of claim 3, wherein the third electrode set in the mth first electrode setFirst weight ω of touch electrode_1m-13Is composed of
The touch positioning method according to claim 3 or 4, wherein the following formula is adopted, according to the first weight corresponding to the mth first electrode group and the position coordinate (x) of the first touch electrode in the mth first electrode group_1m-11，y _1m-11) Position coordinate (x) of the second touch electrode_1m-12，y _1m-12) And the position coordinate (x) of the third touch electrode_1m-13，y _1m-13) Determining the centroid coordinate (x) of the triangle corresponding to the mth first electrode group_m-1，y _m-1)：

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。
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 electrodes and a second type of touch electrodes; the first type of touch control electrode and the second type of touch control electrode are different in area;

the electrode sets comprise N second electrode sets; in the second electrode group, the first touch electrode and the second touch electrode are both used as the second type of touch electrode, and the third touch electrode is used as the first type of touch electrode; n is an integer greater than or equal to 1;

determining a 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 an nth second electrode group, determining a first weight of each second type touch electrode in the nth second electrode group according to a touch capacitance value of the second type touch electrode in the nth second electrode group by using the following formula;

wherein N is not less than 1 and not more than N, and N is an integer omega_1n-21A first weight, ω, of the first touch electrode in the nth second electrode group_1n-22A first weight, C, representing the second touch electrode in the nth second electrode group_1n-21Represents a touch capacitance value, C, of the first touch electrode in the nth second electrode group_1n-22And the touch capacitance value represents the touch capacitance value of the second touch electrode in the nth second electrode group.
The touch location method of claim 6, wherein the nth second electrode group has a first weight ω of the third touch electrode_1n-23Is composed of
The touch positioning method according to claim 6 or 7, wherein a formula is adopted, according to the first weight corresponding to the nth second electrode group and the position coordinate (x) of the first touch electrode in the nth second electrode group_1n-21，y _1n-21) Position coordinate (x) of the second touch electrode_1n-22，y _1n-22) And the position coordinate (x) of the third touch electrode_1n-23，y _1n-23) Determining the centroid coordinate (x) of the triangle corresponding to the nth second electrode group_n-2，y _n-2)：

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。
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 electrodes and a second type of touch electrodes; the first type of touch control electrode and the second type of touch control electrode are different in area;

the electrode sets comprise K third electrode sets; in the third electrode group, a first touch electrode, a second touch electrode and a third touch electrode are all used as the first type of touch electrode or the second type of touch electrode; k is an integer greater than or equal to 1;

determining a 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: determining a first weight of each touch electrode in a kth third electrode group according to a touch capacitance value of each touch electrode in the kth third electrode group by using the following formula;

wherein K is not less than 1 and not more than K, and K is an integer omega_1k-31A first weight, ω, of the first touch electrode in the kth third electrode group_1k-32Represents a first weight, ω, of the second touch electrode in the kth third electrode group_1k-33A first weight, C, representing the third touch electrode in the kth third electrode group_1k-31Represents a touch capacitance value, C, of the first touch electrode in the kth third electrode group_1k-32Represents a touch capacitance value, C, of the second touch electrode in the kth third electrode group_1k-33Represents a touch capacitance value of the third touch electrode in the kth third electrode group.
The touch positioning method of claim 9, wherein a formula is adopted, according to the first weight corresponding to the kth third electrode group and the position coordinate (x) of the first touch electrode in the kth third electrode group_1k-31，y _1k-31) Position coordinate (x) of the second touch electrode_1k-32，y _1k-32) And the position coordinate (x) of the third touch electrode_1k-33，y _1k-33) Determining the centroid coordinate (x) of the triangle corresponding to the kth second electrode group_k-3，y _k-3)：

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。
Touch localization method according to one of claims 1 to 10, wherein the target touch coordinate (x) is determined from the coordinates of the centroid of all the triangles₀₁，y ₀₁): wherein x is₀₁Is the average of the abscissas in the coordinates of the centers of mass of all the triangles, y₀₁Is the average of the ordinate in the coordinates of the centers of mass of all the triangles.
The touch location method according to any one of claims 1 to 10, wherein the determining target touch coordinates according to the coordinates of the centroid of all the triangles specifically comprises:

for each triangle, determining a second weight corresponding to the triangle according to the touch capacitance values of all the touch electrodes corresponding to the triangle;

and determining the target touch coordinate according to the centroid coordinates of all the triangles and the corresponding second weights.
The touch positioning method of claim 12, wherein for a q-th triangle, a second weight ω corresponding to the q-th triangle is determined according to touch capacitance values of all touch electrodes corresponding to the q-th triangle by using the following formula_2-q；

Wherein Q represents the total number of triangles C_qAnd the sum of the touch capacitance values of all the touch electrodes corresponding to the q-th triangle is represented.
The touch location method of claim 13, wherein the target touch coordinate (x) is determined according to the centroid coordinates of all the triangles and the corresponding second weights thereof by using the following formula₀₂，y ₀₂)；

Wherein x is_4-qRepresents the abscissa, y, of the coordinates of the centroid of said q-th triangle_4-qRepresents the ordinate in the centroid coordinates of the q-th triangle.
A touch-sensitive pointing device, comprising:

a capacitance value determination circuit configured to acquire a position coordinate and a touch capacitance value of each touch electrode in the touch area; the touch capacitance value is a capacitance value between a touch main body and the touch electrode;

a triangle determination circuit configured to use three touch electrodes in the touch area as an electrode group, and sequentially connect centers of the touch electrodes in each electrode group to form a triangle; wherein any two of the triangles are non-overlapping;

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

a touch coordinate determination circuit configured to determine a target touch coordinate from the centroid coordinates of all the triangles.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the touch localization method of any one of claims 1-14.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the touch location method according to any of claims 1-14 when executing the computer program.