CN104750324A - Detection method and detection device of touch screen - Google Patents

Abstract

The invention discloses a touch screen detection method and detection device, wherein the touch screen includes a first area and a second area, and there is a joint boundary between the first area and the second area, and the detection method includes: detecting the first area of the touch screen and acquire at least one first detection electrode touched by the touch point in the first area; detect whether the touch point is located in the preset area centered on the combined boundary; if the touched point is located on the combined boundary as the center within the preset area, acquire at least one second detection electrode corresponding to the at least one first detection electrode in the second area; and determine the position of the touch point according to the at least one first detection electrode and the at least one second detection electrode. The detection method of the embodiment of the present invention combines the upper and lower screens into one screen to change the calculation algorithm of the coordinates of the touch point, making the line drawing "crossing the seam" smoother, clicking more accurate, and improving the accuracy of identifying the touch point.

Description

Touch screen detection method and detection device

technical field

The invention relates to the field of touch technology, in particular to a touch screen detection method and detection device.

Background technique

The current low-cost self-capacitance touch screen is mainly a horizontal triangle pattern. As shown in Figure 1, the horizontal triangle pattern can realize two-point touch on a single-layer structure, but the two points cannot be on the same row. It will be impossible to set the difference, and there will be an error, and the middle point between the two points will be reported. This will be limited in some applications, affecting customer experience.

At present, in order to solve the problem of two points, the industry has developed a self-capacitance touch screen with a double-zone triangular pattern, as shown in Figure 2. This pattern can realize two points in different areas, such as point 1, point 2, point 3, and point 4. Any two points can be identified. Specifically, the double-area triangle pattern is actually putting two triangles together, and then calculating the coordinates of the touch point respectively, and then reporting the coordinates to the host to determine the position of the touch point. However, there is a problem that, since the two screens in the middle pass through the intersection, each of the two screens actually counts as a coordinate, and then they are combined together. Therefore, when the point moves upwards, there will be a "crossing gap" phenomenon; and because the capacitive screen has certain edge characteristics on the edge itself, for example, the click accuracy on the edge decreases, the jitter becomes larger, etc., the edge point itself is not very accurate, so there will be inaccurate clicks during the closing process. Accurate, jump point, cross point and so on.

Contents of the invention

The purpose of the present invention is to solve one of the above-mentioned technical defects at least to a certain extent.

For this reason, an object of the present invention is to propose a kind of touch-screen detection method, and this detection method changes the calculation algorithm of the coordinate of touch point by synthesizing upper and lower two screens into one screen, makes the drawing line "cross the seam" smoother, click More accurate, improving the precision when identifying touch points.

Another object of the present invention is to provide a touch screen detection device.

In order to achieve the above object, an embodiment of an aspect of the present invention proposes a touch screen detection method, the touch screen includes a first area and a second area, wherein there is a joint boundary between the first area and the second area, and the The method includes the steps of: detecting a touch point on the first area of the touch screen, and acquiring at least one first detection electrode touched by the touch point in the first area; detecting the touch whether the point is located in a preset area centered on the combined boundary; if the touch point is located in a preset area centered on the combined boundary, obtain the information in the second area that is related to the at least one first at least one second detection electrode corresponding to the detection electrode; and determining the position of the touch point according to the at least one first detection electrode and the at least one second detection electrode.

According to the touch screen detection method of the embodiment of the present invention, it is detected whether the touch point is located in the preset area centered on the joint boundary. When the touch point is located in the preset area centered on the joint boundary, the acquired first detected The electrode and the second detection electrode determine the position of the touch point, so that when the line is drawn "crossing the gap", the click is more accurate, and the phenomenon of "crossing the gap" will not be noticed, so as to improve the accuracy of identifying the touch point , to improve user experience.

In order to achieve the above purpose, the second aspect of the present invention proposes a touch screen detection device according to another embodiment, the touch screen includes a first area and a second area, wherein, between the first area and the second area With a combined boundary, the device includes: a first detection module, configured to detect a touch point on the first area of the touch screen; a first acquisition module, configured to acquire the touch point in the first area by the At least one first detection electrode touched by the touch point; a second detection module, used to detect whether the touch point is located in a preset area centered on the combined boundary; The second detection module acquires at least one second detection electrode corresponding to the at least one first detection electrode in the second area when the detection module detects that the touch point is located in a preset area centered on the combined boundary; and A determination module, configured to determine the position of the touch point according to the at least one first detection electrode and the at least one second detection electrode.

According to the touch screen detection device of the embodiment of the present invention, the second detection module can detect whether the touch point is located in the preset area centered on the joint boundary, and when the touch point is located in the preset area centered on the joint boundary, the determination module The position of the touch point can be determined according to the obtained first detection electrode and second detection electrode, so that the drawing line "crosses the seam" is smoother, the click is more accurate, and the phenomenon of "crossing the seam" will not be noticed. Improve the accuracy of identifying touch points and improve user experience.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein,

FIG. 1 is a schematic diagram of a touch screen with a traditional triangular pattern;

Fig. 2 is a schematic diagram of a touch screen with a double-zone triangular pattern;

3 is a flowchart of a touch screen detection method according to an embodiment of the present invention;

4 is a flowchart of a touch screen detection method according to a specific embodiment of the present invention;

FIG. 5 is a schematic diagram of a double-area triangular pattern on the touch screen according to a specific embodiment of the present invention;

Fig. 6 is a schematic diagram of a double-area triangular pattern on the touch screen according to another specific embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a touch screen detection device according to an embodiment of the present invention;

8 is a schematic structural diagram of a touch screen detection device according to a specific embodiment of the present invention;

9 is a schematic structural diagram of a touch screen detection device according to another specific embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a touch screen detection device according to another specific embodiment of the present invention; and

FIG. 11 is a schematic diagram of a touch screen with a triangular pattern in three regions according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments or portions of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.

In order to solve the problems of inaccurate clicking, jumping points, and crossing points when the touch point is recognized due to the phenomenon of "crossing gaps" at the touch point when the user clicks on the touch screen, the present invention proposes a touch screen Detection method and detection device, the following describes the touch screen detection method and detection device according to the embodiments of the present invention with reference to the accompanying drawings.

It should be noted that, in the embodiment of the present invention, the touch screen may be a capacitive touch screen, and the touch screen may include a first area and a second area, wherein there is a joint boundary between the first area and the second area.

FIG. 3 is a flowchart of a touch screen detection method according to an embodiment of the present invention.

As shown in Figure 3, the touch screen detection method may include the following steps:

S101. Detect a touch point on a first area of a touch screen, and acquire at least one first detection electrode touched by the touch point in the first area.

For example, the touched point in the first area of the touch screen may be detected by the sensor, and then all the first detection electrodes touched by the touch point in the first area may be acquired according to the area touched by the finger. Wherein, the first detecting electrode is in the first area, and the first detecting electrode may be a right triangle. In addition, every two first detection electrodes can be arranged in sequence to form a rectangular pattern, and the first region can be composed of a plurality of the rectangular patterns.

S102. Detect whether the touch point is located in a preset area centered on the combined boundary.

In one embodiment of the present invention, if the detected touch point is not located in the preset area centered on the bounding boundary, the position of the touch point can be determined by using existing technologies.

For example, before detecting whether the touch point is located in the preset area centered on the combined boundary, the data of each channel in the touch screen can be scanned by the capacitive screen control chip, and then the upper and lower sides of the capacitive screen can be adjusted according to the data of each channel and the position. Parts are calculated separately to obtain the coordinates corresponding to the touch point. Wherein, the coordinates of the touch points can be respectively calculated through the calculation method of a single horizontal triangle touch screen in the prior art. When the calculated coordinates are not close to the binding boundary, it can be determined that the coordinates of the touch point are the touch position of the touch point on the touch screen. The specific calculation process can refer to the description of the subsequent embodiments.

S103. If the touch point is located in a preset area centered on the combined boundary, acquire at least one second detection electrode corresponding to the at least one first detection electrode in the second area.

For example, when it is calculated in step S102 that the coordinates of the touch point are close to the joint boundary, at least one second detection electrode corresponding to the first detection electrode in the second area of the touch screen may be obtained. For example, as shown in Figure 2, "Point 3" is located in the preset area centered on the joint boundary, and the first detection electrodes A5, A6, B5, and B6 touched by "Point 3" can be obtained first, and then the first detection electrodes can be obtained. In the second area, the second detection electrode A13 corresponding to the first detection electrode A5, the second detection electrode A14 corresponding to the first detection electrode A6, the second detection electrode B13 corresponding to the first detection electrode B5, and the first detection electrode B13 The electrode B6 corresponds to the second detection electrode B14. Wherein, it should be understood that the second detection electrode is located in the second area, and the second detection electrode may be a right triangle. In addition, every two second detection electrodes can be arranged in sequence to form a rectangular pattern, and the second area can be composed of a plurality of such rectangular patterns, wherein the arrangement direction of the second detection electrodes can be consistent with the arrangement direction of the first detection electrodes or in the opposite direction.

S104. Determine the position of the touch point according to at least one first detection electrode and at least one second detection electrode.

For example, when it is calculated that the touch point is located in a preset area centered on the combined boundary through the upper and lower screen split-screen algorithm in the prior art, the split-screen calculation can be converted into a full-screen algorithm. That is to say, it is necessary to combine the first area and the second area in the touch screen, and determine the position of the touch point according to the first detection electrode and the second detection electrode. For a specific implementation process, reference may be made to subsequent embodiments.

According to the touch screen detection method of the embodiment of the present invention, it is detected whether the touch point is located in the preset area centered on the joint boundary. When the touch point is located in the preset area centered on the joint boundary, the acquired first detected The electrode and the second detection electrode determine the position of the touch point, so that when the line is drawn "crossing the gap", the click is more accurate, and the phenomenon of "crossing the gap" will not be noticed, so as to improve the accuracy of identifying the touch point , to improve user experience.

Fig. 4 is a flowchart of a touch screen detection method according to a specific embodiment of the present invention. FIG. 5 is a schematic diagram of a double-area triangular pattern on the touch screen according to a specific embodiment of the present invention. Wherein, as shown in FIG. 5 , the arrangement direction of the second detection electrodes in the second region is consistent with the arrangement direction of the first detection electrodes in the first region.

In order to improve the accuracy, make it more accurate when the user clicks the touch screen, and avoid phenomena such as "crossing the gap", you can first obtain the first capacitance change corresponding to the first detection electrode, and then obtain it according to the first capacitance change and the first preset algorithm. The ordinate of the touch point, and finally determine whether the ordinate is within a preset range, so as to detect whether the touch point is located in a preset area centered on the bounding boundary.

Specifically, the touch screen detection method according to the embodiment of the present invention will be described below with reference to FIG. 4 and FIG. 5 . As shown in Figure 4 and Figure 5, the touch screen detection method may include the following steps:

S201. Detect a touch point on a first area of a touch screen, and acquire at least one first detection electrode touched by the touch point in the first area.

For example, the touch point "point three" touched in the first area of the touch screen can be detected by the sensor, and then all the first points touched by the touch point "point three" in the first area can be obtained according to the area touched by the finger. Detection electrodes A5, B5, A6, B6. Wherein, the first detection electrodes A5 , B5 , A6 , and B6 are located in the first region, and the first detection electrodes A5 , B5 , A6 , and B6 may present a triangular shape.

S202. Acquire at least one first capacitance variation corresponding to at least one first detection electrode.

For example, the detected first detection electrodes A5, B5, A6, and B6 touched by the touch point "point three" can be calculated according to the capacitance formula to obtain the corresponding first capacitance changes C _A5 , C _B5 , C _A6 , C _B6 . Among them, the capacitance formula can be C=εS/4πkd, ε is the dielectric constant, S is the area facing the touch point, k is the electrostatic force constant, and d is the distance between the two plates of the capacitor.

S203. Acquire the ordinate of the touch point according to at least one first capacitance variation and a first preset algorithm.

Wherein, in the embodiment of the present invention, the first preset algorithm may be a percentage algorithm in the prior art. For example, the ordinate of the touch point can be obtained by using a first preset algorithm (eg, a percentage algorithm). Specifically, the calculation method of a single horizontal triangle touch screen in the prior art can be used to calculate the vertical coordinates of the touch points, for example, according to the first capacitance changes C _A5 , C _B5 , C _A6 , and C _B6 through a percentage algorithm. Calculate to obtain the ordinate of the touch point "Point 3", the formula for calculating the ordinate of the touch point "Point 3" can be (C _B5 +C _B6 )*Resy/2*(C _A5 +C _B5 +C _A6 +C _B6 ), where (C _B5 +C _B6 )/(C _A5 +C _B5 +C _A6 +C _B6 ) is the percentage of the touch point "Point 3" in the vertical direction, and Resy/2 is the resolution of the upper half of the screen.

S204, judging whether the ordinate is within a preset range to detect whether the touch point is located within a preset area centered on the combined boundary.

In one embodiment of the present invention, if the ordinate is within the preset range, the detected touch point is located in a preset area centered on the bounding boundary; if the ordinate is not within the preset range, the detected touch point is not located Within the preset area centered on the binding boundary. For example, suppose the vertical coordinate of the bounding boundary X on the touch screen is 400, and the preset range is between 300 and 500. When the vertical coordinate of the touch point "point three" is calculated as 350 according to the above step S203, it can be judged that the touch point "point three" is The ordinate of "three" is within the preset range of 300 to 500. At this time, it can be determined that the touch point "point three" is located in the preset area centered on the combined boundary X, that is, it can be determined that the touch point "point three" "Three" will cross the seam. At this time, the abscissa and ordinate of the touch point "point three" can be calculated through the full-screen algorithm of the following steps.

S205. If the touch point is located in a preset area centered on the combined boundary, acquire at least one second detection electrode corresponding to the at least one first detection electrode in the second area.

In an embodiment of the present invention, acquiring at least one second detection electrode corresponding to at least one first detection electrode in the second area, that is, step S205 includes: acquiring at least one channel in the touch screen where at least one first detection electrode is located, Wherein, the channel connects the first detection electrode in the first area and the corresponding second detection electrode in the second area; and obtains at least one corresponding second detection electrode in the second area according to at least one channel.

For example, when it is judged that the touch point "Point 3" is located in the preset area centered on the combined boundary, it can first be obtained that the first detection electrodes A5, B5 are located on the I channel in the touch screen, and the first detection electrodes A6, B6 On the J channel of the touch screen, after that, the corresponding second detection electrodes A13, B13, A14, B14 in the second area can be obtained according to the I channel and the J channel. Wherein, the I channel can include three small channels, one is the upper channel where the first detection electrode A5 is located, the other is the middle channel where the first detection electrode B5 and the second detection electrode A13 are located, and another is the second detection electrode B13 The lower channel where it is located, and so on, the J channel can also include three small channels, one is the upper channel where the first detection electrode A6 is located, and the other is the middle channel where the first detection electrode B6 and the second detection electrode A14 are located. Another one is the lower channel where the second detection electrode B14 is located.

S206. Acquire at least one second capacitance variation corresponding to at least one second detection electrode.

Specifically, the acquisition method of the second capacitance variation corresponding to the second detection electrode is the same as the acquisition method of the first capacitance variation corresponding to the first detection electrode. For example, the detected second detection electrodes A13, B13, A14, and B14 touched by the touch point "point three" can be calculated according to the capacitance formula to obtain the corresponding second capacitance changes C _A13 , C _B13 , C _A14 , C _B14 . Among them, the capacitance formula can be C=εS/4πkd, ε is the dielectric constant, S is the area facing the touch point, k is the electrostatic force constant, and d is the distance between the two plates of the capacitor.

S207. Acquire the coordinates of the touch point according to at least one first capacitance variation, at least one second capacitance variation, and a second preset algorithm.

Wherein, in the embodiment of the present invention, the second preset algorithm may be a centroid algorithm in the prior art, and the abscissa of the touch point may be obtained by using the second preset algorithm (such as the centroid algorithm). For example, as shown in Figure 5, when B1, A9, B2, A10, B3, A11, etc. are combined, the structure of the entire pattern changes, and the algorithm changes accordingly. At this time, when calculating the abscissa of the touch point, the four vertical detection electrodes can be combined into one channel. For example, the touch point "point three" touches two channels, and these two channels are I channel and J channel, that is, I channel and The detection electrodes corresponding to the J channel are A5+B5+A13+B13 and A6+B6+A14+B14 respectively. At this time, it can be calculated according to the first capacitance change amount C _A5 , C _B5 , C _A6 , C _B6 , the second capacitance change amount C _A13 , C _B13 , C _A14 , C _B14 and the centroid algorithm to obtain the touch point "point three ", that is, the formula for calculating the abscissa of "Point 3" can be ((C _A5 +C _B5 +C _A13 +C _B13 )*5+(C _A6 +C _B6 +C _A14 +C _B14 )*6) *Resx/8(C _A5 +C _B5 +C _A13 +C _B13 +C _A6 +C _B6 +C _A14 +C _B14 ), is to combine the four detection electrodes on the vertical bar into one channel to calculate the abscissa, where, Resx is the resolution in the horizontal direction, 5 and 6 are the order of the channels where the first detection electrode and the second detection electrode are located, and 8 is the total number of channels in the touch screen; at the same time, according to the first capacitance change C _A5 , C _B5 , C _A6 , C _B6 , the second capacitance variation C _A13 , C _B13 , C _A14 , C _B14 and the percentage algorithm are calculated to obtain the ordinate of the touch point "point three", that is, the formula for calculating the ordinate of "point three" Can be (((C _A5 +C _A6 )*0+(C _B5 +C _B6 +C _A13 +C _A14 )*0.5+(C _B13 +C _B14 )*1)/(C _A5 +C _A6 +C _B5 +C _B6 +C _A13 +C _A14 +C _B13 +C _B14 ))*Resy, where A5 and A6 are respectively located on the upper channel of the I channel and the J channel, and the weight is 0. B5, A13, B6, and A14 are the middle channel on the I channel and J channel respectively, with a weight of 0.5, B13 and B14 are the lower channels on the I channel and J channel, respectively, with a weight of 1, and Resy is the vertical coordinate resolution . In this way, eight detection electrodes of two channels can be used to calculate the only vertical coordinate of the touch point. At this time, since the upper and lower screens become a capacitive screen, the combined boundary between the first area and the second area is It disappears from the algorithm, so naturally there will be no problems such as "crossing the seam" in the middle.

It should be noted that if there are two touch points on the same channel, such as "Point 1" and "Point 2" in Figure 5, after the full-screen calculation, the upper and lower screens can be used to calculate separately. If the split-screen calculation The result is that there is a touch point on the upper and lower screens respectively, and the two touch points are not located in the preset area centered on the combined boundary, then it can be confirmed that two fingers touch two points, so two points can be reported. coordinates to the host.

It should also be noted that FIG. 6 is a schematic diagram of a touch screen with a double-area triangular pattern according to another specific embodiment of the present invention. Wherein, as shown in FIG. 6 , the arrangement direction of the second detection electrodes in the second region is opposite to the arrangement direction of the first detection electrodes in the first region. For example, as shown in Figure 6, after detecting that the touch point "Point 2" is located in the preset area centered on the combined boundary, the touch points touched by the touch point "Point 2" on the first area and the second area can be obtained respectively. The first detection electrodes A11, A10, A9, B11, B10, B9, and the second detection electrodes A6, A7, A8, B6, B7, B8. After that, the corresponding first capacitance changes CA11 , CA10 , CA9 _, CB11 , C _B10 , C _B9 and second capacitance changes C _A6 , CA7 , C _A8 , C _B6 , C _B7 , C _B8 are obtained respectively. Finally, A8, B9, A7, B10, A6, and B11 can be combined together, and then, according to the first capacitance change amount C _A11 , C _{A10 , C A9} , C _B11 , C _{B10 ,} C _B9 , the second capacitance change amount C _A6 , C _A7 , C _A8 , C _B6 , C _B7 , C _B8 and the percentage algorithm are calculated to obtain the ordinate of the touch point "point 2", that is, the formula for calculating the ordinate of the touch point "point 2" can be ((( C _A11 +C _A10 +C _A9 )*0+(C _B9 +C _B10 +C _B11 +C _A8 +C _A7 +C _A6 )*0.5+(C _B8 +C _{B 7} +C _B6 )*1)/( C _A11 +C _A10 +C _A9 +C _B11 +C _B10 +C _B9 +C _A6 +C _A7 +C _A8 +C _B6 +C _B7 +C _B8 ))*Resy.

According to the touch screen detection method of the embodiment of the present invention, the first capacitance variation corresponding to the first detection electrode can be obtained first, then the ordinate of the touch point can be obtained according to the first capacitance variation and the first preset algorithm, and finally it can be judged whether the ordinate is in the Within the preset range, it is used to detect whether the touch point is located in the preset area centered on the combined boundary, so that the user can click the touch screen more accurately, avoid the phenomenon of "crossing the seam", further improve the accuracy, and improve the user experience.

It should be noted that, in the embodiment of the present invention, if the detected touch point is not located in the preset area centered on the combined boundary, the position of the touch point may be determined according to the prior art. For example, as shown in FIG. 5, after obtaining the ordinate of the touch point "Point 1" according to the first capacitance variation and the first preset algorithm, it is judged that the ordinate of "Point 1" is not within the preset range, that is to say , "Point 1" is not located in the preset area centered on the combined boundary. At this time, the abscissa of "Point 1" can be calculated through the existing technology, so as to determine the position of "Point 1". For example, the abscissa of "Point 1" can be calculated using the centroid algorithm, that is, the formula for calculating the abscissa of "Point 1" can be ((C _A1 +C _B1 )*1+(C _A2 +C _B2 )*2+( C _A3 +C _B3 )*3)*Resx/8(C _A1 +C _B1 +C _A2 +C _B2 +C _A3 +C _B3 ). In this way, the abscissa and ordinate of "point one" can be obtained, and the position of "point one" on the touch screen can be determined according to the abscissa and ordinate.

It should also be noted that, in the embodiment of the present invention, the touch screen may further include a third area, and there is a joint boundary between the third area and the second area, and the arrangement direction of the third detecting electrodes in the third area is the same as that of the second area. The sorting direction of a detecting electrode is the same or the sorting direction is opposite. It can be understood that the touch screen may further include at least one fourth area, the at least one fourth area has a joint boundary with its immediate adjacent area, and the arrangement direction of the detection electrodes therein is the same as or opposite to that of the first detection electrodes. FIG. 11 is a schematic diagram of a touch screen with a triangular pattern in three regions according to an embodiment of the present invention. For example, as shown in Figure 11, when the detected touch points "Point 3" and "Point 5" are located in the preset area centered on the boundary, the first area, the second area, and the third area can be obtained respectively. A detection electrode, a second detection electrode and a third detection electrode. Then combine A13, B5, A14, B6, A5, B5, A6, and B6 together, and calculate according to the capacitance change and percentage algorithm corresponding to these detection electrodes to obtain the "point three" and "point five" respectively. The ordinate, so that the positions of "point three" and "point five" on the touch screen can be determined.

In order to realize the above embodiments, the present invention also proposes a touch screen detection device.

FIG. 7 is a schematic structural diagram of a touch screen detection device according to an embodiment of the present invention.

As shown in FIG. 7 , the touch screen detection device may include: a first detection module 100 , a first acquisition module 200 , a second detection module 300 , a second acquisition module 400 and a determination module 500 .

Specifically, the first detection module 100 is used to detect a touch point on the first area of the touch screen. The first acquiring module 200 is configured to acquire at least one first detection electrode touched by a touch point in the first area. For example, the first detection module 100 can detect the touch point touched in the first area of the touch screen through the sensor, and then the first acquisition module 200 can acquire the touch point touched by the touch point in the first area according to the area touched by the finger. All first detection electrodes. Wherein, the first detecting electrode is in the first area, and the first detecting electrode may be a right triangle. In addition, every two first detection electrodes can be arranged in sequence to form a rectangular pattern, and the first region can be composed of a plurality of the rectangular patterns.

The second detection module 300 is used to detect whether the touch point is located in a preset area centered on the combined boundary. Wherein, in one embodiment of the present invention, if the second detection module 300 detects that the touch point is not located in the preset area centered on the combined boundary, then the position of the touch point can be determined through existing technologies.

For example, before the second detection module 300 detects whether the touch point is located in the preset area centered on the bounding boundary, it can first scan the data of each channel in the touch screen through the capacitive screen control chip, and then, according to the data of each channel and its position, The upper and lower parts of the capacitive screen are calculated separately to obtain the coordinates corresponding to the touch points. Wherein, the coordinates of the touch points can be respectively calculated through the calculation method of a single horizontal triangle touch screen in the prior art. When the calculated coordinates are not close to the binding boundary, it can be determined that the coordinates of the touch point are the touch position of the touch point on the touch screen. The specific calculation process can refer to the description of the subsequent embodiments.

The second acquisition module 400 is configured to acquire at least one second detection electrode corresponding to at least one first detection electrode in the second area when the second detection module 300 detects that the touch point is located in a preset area centered on the combined boundary . For example, when the second detection module 300 calculates that the coordinates of the touch point are close to the joint boundary, the second acquisition module 400 may acquire at least one second detection electrode corresponding to the first detection electrode in the second area of the touch screen. For example, as shown in FIG. 5, "Point 3" is located in the preset area centered on the binding boundary, and the first acquisition module 200 can first acquire the first detection electrodes A5, A6, B5, B6 touched by "Point 3". , after that, the second acquisition module 400 acquires the second detection electrode A13 corresponding to the first detection electrode A5, the second detection electrode A14 corresponding to the first detection electrode A6, the second detection electrode B5 corresponding to the first detection electrode B5 in the second area. Two detection electrodes B13, and a second detection electrode B14 corresponding to the first detection electrode B6. Wherein, it should be understood that the second detection electrode is located in the second area, and the second detection electrode may be a right triangle. In addition, every two second detection electrodes can be arranged in sequence to form a rectangular pattern, and the second area can be composed of a plurality of such rectangular patterns, wherein the arrangement direction of the second detection electrodes can be consistent with the arrangement direction of the first detection electrodes or in the opposite direction.

The determination module 500 is configured to determine the position of the touch point according to at least one first detection electrode and at least one second detection electrode.

For example, when the split-screen calculation is performed through the upper and lower screens, and the touch point is calculated to be located in a preset area centered on the combined boundary, the split-screen calculation can be converted into a full-screen calculation. That is to say, it is necessary to combine the first area and the second area in the touch screen, and determine the position of the touch point according to the first detection electrode and the second detection electrode. For a specific implementation process, reference may be made to subsequent embodiments.

According to the touch screen detection device of the embodiment of the present invention, the second detection module can detect whether the touch point is located in the preset area centered on the joint boundary, and when the touch point is located in the preset area centered on the joint boundary, the determination module The position of the touch point can be determined according to the obtained first detection electrode and second detection electrode, so that the drawing line "crosses the seam" is smoother, the click is more accurate, and the phenomenon of "crossing the seam" will not be noticed. Improve the accuracy of identifying touch points and improve user experience.

FIG. 8 is a schematic structural diagram of a touch screen detection device according to a specific embodiment of the present invention.

The touch screen detection device of the embodiment of the present invention will be described below in conjunction with FIG. 5 and FIG. 8. As shown in FIG. Two obtaining module 400 , determining module 500 , first obtaining unit 310 , second obtaining unit 320 and judging unit 330 . Wherein, the second detection module 300 includes a first acquisition unit 310 , a second acquisition unit 320 and a judgment unit 330 .

Specifically, the first acquisition unit 310 is configured to acquire at least one first capacitance variation corresponding to at least one first detection electrode. For example, the first acquisition unit can calculate the detected first detection electrodes A5, B5, A6, and B6 touched by the touch point "point three" according to the capacitance formula, so as to obtain the corresponding first capacitance change amounts C _A5 , C _B5 , C _A6 , C _B6 . Among them, the capacitance formula can be C=εS/4πkd, ε is the dielectric constant, S is the area facing the touch point, k is the electrostatic force constant, and d is the distance between the two plates of the capacitor.

The second acquiring unit 320 is configured to acquire the ordinate of the touch point according to at least one first capacitance variation and a first preset algorithm. Wherein, in the embodiment of the present invention, the first preset algorithm may be a percentage algorithm in the prior art. For example, the ordinate of the touch point can be obtained by using a first preset algorithm (eg, a percentage algorithm).

More specifically, the calculation method of a single horizontal triangle touch screen in the prior art can be used to calculate the vertical coordinates of the touch points respectively. For example, the calculation can be performed according to the first capacitance change through a percentage algorithm to obtain the touch point "point three". The ordinate, the formula for calculating the ordinate of the touch point "Point 3" can be (C _B5 +C _B6 )*Resy/2*(C _A5 +C _B5 +C _A6 +C _B6 ), where (C _B5 +C _B6 )/(C _A5 +C _B5 +C _A6 +C _B6 ) is the percentage of the touch point "point three" in the vertical direction, and Resy/2 is the resolution of the upper half of the screen.

The judging unit 330 is configured to judge whether the ordinate is within a preset range to detect whether the touch point is located within a preset area centered on the combined boundary. Wherein, in one embodiment of the present invention, the second detection module 300 is also used to detect that the touch point is located in a preset area centered on the bounding boundary when the judging unit 330 judges that the ordinate is within a preset range; When unit 330 determines that the ordinate is not within the preset range, it detects that the touch point is not located within the preset area centered on the combined boundary.

For example, assuming that the ordinate of the joint boundary X in the touch screen is 400, and the preset range is between 300 and 500, when the ordinate of the touch point "point three" calculated by the second acquisition unit 320 is 350, the judging unit 330 can judge The ordinate of the touch point "Point 3" is within the preset range of 300 to 500. At this time, it can be determined that the touch point "Point 3" is located in the preset area centered on the bounding boundary X, that is to say, it can be determined that The touch point "point three" will cross the gap, and at this time, the abscissa and ordinate of the touch point "point three" can be calculated through the full-screen algorithm.

It should be noted that, in the embodiment of the present invention, when the second detection module 300 detects that the touch point is not located in the preset area centered on the combined boundary, the position of the touch point can be determined according to the existing technology. For example, as shown in FIG. 5, after obtaining the ordinate of the touch point "Point 1" according to the first capacitance variation and the first preset algorithm, it is judged that the ordinate of "Point 1" is not within the preset range, that is to say , "Point 1" is not located in the preset area centered on the combined boundary. At this time, the abscissa of "Point 1" can be calculated through the existing technology, so as to determine the position of "Point 1". For example, the abscissa of "Point 1" can be calculated using the centroid algorithm, that is, the formula for calculating the abscissa of "Point 1" can be ((C _A1 +C _B1 )*1+(C _A2 +C _B2 )*2+( C _A3 +C _B3 )*3)*Resx/8(C _A1 +C _B1 +C _A2 +C _B2 +C _A3 +C _B3 ). In this way, the abscissa and ordinate of "point one" can be obtained, and the position of "point one" on the touch screen can be determined according to the abscissa and ordinate.

According to the touch screen detection device of the embodiment of the present invention, the first acquisition unit can obtain the first capacitance change corresponding to the first detection electrode, and the second acquisition unit can obtain the vertical coordinate of the touch point according to the first capacitance change and the first preset algorithm , the judging unit judges whether the ordinate is within a preset range, so as to detect whether the touch point is located in a preset area centered on the combined boundary, so that the user can click the touch screen more accurately, avoid the phenomenon of "crossing the seam", and further improve Accuracy improves user experience.

FIG. 9 is a schematic structural diagram of a touch screen detection device according to another specific embodiment of the present invention.

As shown in Figure 9, the touch screen detection device may include: a first detection module 100, a first acquisition module 200, a second detection module 300, a second acquisition module 400, a determination module 500, a first acquisition unit 310, a second acquisition module unit 320 , judging unit 330 , first acquiring unit 410 and second acquiring unit 420 . Wherein, the second detection module 300 includes a first acquisition unit 310 , a second acquisition unit 320 and a judging unit 330 , and the second acquisition module 400 includes a first acquisition unit 410 and a second acquisition unit 420 .

Specifically, the first acquisition unit 410 is configured to acquire at least one channel in the touch screen where at least one first detection electrode is located, wherein the channel connects the first detection electrode in the first area and the corresponding second detection electrode in the second area. The second acquisition unit 420 is configured to acquire at least one corresponding second detection electrode in the second area according to at least one channel.

For example, as shown in FIG. 5, when it is judged that the touch point "point three" is located in the preset area centered on the combined boundary, the first acquisition unit 410 may first acquire the I channel, the first detection electrodes A6, B6 are located on the J channel in the touch screen, and then the second acquisition unit 420 can acquire the corresponding second detection electrodes A13, B13 in the second area according to the I channel and J channel , A14, B14. Wherein, the I channel can include three small channels, one is the upper channel where the first detection electrode A5 is located, the other is the middle channel where the first detection electrode B5 and the second detection electrode A13 are located, and another is the second detection electrode B13 The lower channel where it is located, and so on, the J channel can also include three small channels, one is the upper channel where the first detection electrode A6 is located, and the other is the middle channel where the first detection electrode B6 and the second detection electrode A14 are located. Another one is the lower channel where the second detection electrode B14 is located.

According to the touch screen detection device of the embodiment of the present invention, the channel in the touch screen where the first detection electrode is located can be acquired by the first acquisition unit, and the second acquisition unit can acquire the corresponding second detection electrode in the second area according to the channel, so as to realize the The upper and lower screens become a capacitive screen, so that the coordinates of the touch point can be calculated through the full-screen algorithm, avoiding the phenomenon of "crossing the seam" and improving accuracy.

Fig. 10 is a schematic structural diagram of a touch screen detection device according to yet another specific embodiment of the present invention.

As shown in Figure 10, the touch screen detection device may include: a first detection module 100, a first acquisition module 200, a second detection module 300, a second acquisition module 400, a determination module 500, a first acquisition unit 310, a second acquisition module The unit 320 , the judgment unit 330 , the first acquisition unit 410 , the second acquisition unit 420 , the first acquisition unit 510 and the second acquisition unit 520 . Wherein, the second detection module 300 includes a first acquisition unit 310, a second acquisition unit 320, and a judgment unit 330, the second acquisition module 400 includes a first acquisition unit 410 and a second acquisition unit 420, and the determination module 500 includes a first acquisition unit 510 and the second acquiring unit 520.

Specifically, the first acquisition unit 510 is configured to acquire at least one second capacitance variation corresponding to at least one second detection electrode. More specifically, the method for obtaining the second capacitance change corresponding to the second detection electrode is the same as the method for obtaining the first capacitance change corresponding to the first detection electrode. For example, the first acquisition unit 510 can calculate the detected second detection electrodes A13, B13, A14, and B14 touched by the touch point "point three" according to the capacitance formula, so as to obtain the corresponding second capacitance variation C _A13 , C _B13 , C _A14 , C _B14 . Among them, the capacitance formula can be C=εS/4πkd, ε is the dielectric constant, S is the area facing the touch point, k is the electrostatic force constant, and d is the distance between the two plates of the capacitor.

The second acquiring unit 520 is configured to acquire the coordinates of the touch point according to at least one first capacitance variation, at least one second capacitance variation and a second preset algorithm. Wherein, in the embodiment of the present invention, the second preset algorithm may be a centroid algorithm in the prior art, and the abscissa of the touch point may be obtained by using the second preset algorithm (such as the centroid algorithm).

For example, as shown in Figure 5, when B1, A9, B2, A10, B3, A11, etc. are combined, the structure of the entire pattern changes, and the algorithm changes accordingly. At this time, when calculating the abscissa of the touch point, the four vertical detection electrodes can be combined into one channel. For example, the touch point "point three" touches two channels, and these two channels are I channel and J channel, that is, I channel and The detection electrodes corresponding to the J channel are A5+B5+A13+B13 and A6+B6+A14+B14 respectively. At this time, it can be calculated according to the first capacitance change amount C _A5 , C _B5 , C _A6 , C _B6 , the second capacitance change amount C _A13 , C _B13 , C _A14 , C _B14 and the centroid algorithm to obtain the touch point "point three" The abscissa of "Point 3" can be calculated as ((C _A5 +C _B5 +C _A13 +C _B13 )*5+(C _A6 +C _B6 +C _A14 +C _B14 )*6)* Resx/8(C _A5 +C _B5 +C _A13 +C _{B 13} +C _A6 +C _B6 +C _A14 +C _B14 ), is to combine the four detection electrodes on the vertical bar into one channel to calculate the abscissa, where, Resx is the resolution in the horizontal direction, 5 and 6 are the order of the channels where the first detection electrode and the second detection electrode are located, and 8 is the total number of channels in the touch screen; at the same time, according to the first capacitance change C _A5 , C _B5 , C _A6 , C _B6 , the second capacitance variation C _A13 , C _B13 , C _A14 , C _B14 and the percentage algorithm are calculated to obtain the ordinate of the touch point "point three", that is, the formula for calculating the ordinate of "point three" Can be (((C _A5 +C _A6 )*0+(C _B5 +C _B6 +C _A13 +C _A14 )*0.5+(C _{B 13} +C _B14 )*1)/(C _A5 +C _A6 +C _B5 +C _B6 +C _A13 +C _A14 +C _B13 +C _B14 ))*Resy, where A5 and A6 are respectively located on the upper channel of the I channel and the J channel, and the weight is 0. B5, A13, B6, and A14 are the middle channel on the I channel and J channel respectively, with a weight of 0.5, B13 and B14 are the lower channels on the I channel and J channel, respectively, with a weight of 1, and Resy is the vertical coordinate resolution . In this way, eight detection electrodes of two channels can be used to calculate the only vertical coordinate of the touch point. At this time, since the upper and lower screens become a capacitive screen, the combined boundary between the first area and the second area is It disappears from the algorithm, so naturally there will be no problems such as "crossing the seam" in the middle.

According to the touch screen detection device of the embodiment of the present invention, the coordinates of the touch point can be obtained by the second acquisition unit according to at least one first capacitance change, at least one second capacitance change and a second preset algorithm, so that it can be determined that the touch point is The position on the touch screen realizes turning the upper and lower screens into a capacitive screen, so that the coordinates of the touch point can be calculated by a full-screen algorithm, which further improves the accuracy.

It should be noted that if there are two touch points on the same channel, such as "Point 1" and "Point 2" in Figure 5, after the full-screen calculation, the upper and lower screens can be used to calculate separately. If the split-screen calculation The result is that there is a touch point on the upper and lower screens respectively, and the two touch points are not located in the preset area centered on the combined boundary, then it can be confirmed that two fingers touch two points, so two points can be reported. coordinates to the host.

It should also be noted that, in the embodiment of the present invention, the touch screen may further include a third area, and there is a joint boundary between the third area and the second area, and the arrangement direction of the third detecting electrodes in the third area is the same as that of the second area. The sorting direction of a detecting electrode is the same or the sorting direction is opposite. It can be understood that the touch screen may further include at least one fourth area, the at least one fourth area has a joint boundary with its immediate adjacent area, and the arrangement direction of the detection electrodes therein is the same as or opposite to that of the first detection electrodes. For example, as shown in Figure 11, when the detected touch points "Point 3" and "Point 5" are located in the preset area centered on the boundary, the first area, the second area, and the third area can be obtained respectively. A detection electrode, a second detection electrode and a third detection electrode. Then combine A13, B5, A14, B6, A5, B5, A6, and B6 together, and calculate according to the capacitance change and percentage algorithm corresponding to these detection electrodes to obtain the "point three" and "point five" respectively. The ordinate, so that the positions of "point three" and "point five" on the touch screen can be determined.

It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGAs), Field Programmable Gate Arrays (FPGAs), etc.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (14)

1. A touch screen detection method, characterized in that the touch screen comprises a first area and a second area, wherein there is a joint boundary between the first area and the second area, the method comprising: Detecting a touch point on the first area of the touch screen, and acquiring at least one first detection electrode touched by the touch point in the first area; Detecting whether the touch point is located within a preset area centered on the combined boundary; If the touch point is located in a preset area centered on the combined boundary, acquiring at least one second detection electrode corresponding to the at least one first detection electrode in the second area; and The position of the touch point is determined according to the at least one first detection electrode and the at least one second detection electrode. 2. The touch screen detection method according to claim 1, wherein the detecting whether the touch point is located in a preset area centered on the combined boundary comprises: Acquiring at least one first capacitance variation corresponding to the at least one first detection electrode; Obtaining the ordinate of the touch point according to the at least one first capacitance variation and a first preset algorithm; and Judging whether the ordinate is within a preset range to detect whether the touch point is located within a preset area centered on the combined boundary. 3. The touch screen detection method according to claim 2, wherein if the ordinate is within a preset range, it is detected that the touch point is located in a preset area centered on the combined boundary; if the If the ordinate is not within the preset range, it is detected that the touch point is not located in the preset area centered on the combined boundary. 4. The touch screen detection method according to claim 3, wherein the acquiring at least one second detection electrode corresponding to the at least one first detection electrode in the second area comprises: Acquiring at least one channel in the touch screen where the at least one first detection electrode is located, wherein the channel connects the first detection electrode in the first area and the corresponding second detection electrode in the second area; as well as Acquire the at least one second detection electrode corresponding to the second region according to the at least one channel. 5. The touch screen detection method according to claim 2 or 4, wherein the determining the position of the touch point according to at least one first detection electrode and the at least one second detection electrode comprises: acquiring at least one second capacitance variation corresponding to the at least one second detection electrode; and The coordinates of the touch point are acquired according to the at least one first capacitance variation, the at least one second capacitance variation, and a second preset algorithm. 6. The touch screen detection method according to claim 1, wherein the first detection electrode and the second detection electrode are respectively a right-angled triangle, and every two of the first detection electrodes are arranged in sequence to form a A rectangular pattern, the first region has a plurality of the rectangles, and every two of the second detection electrodes are arranged in sequence to form a rectangular pattern, the second region has a plurality of the rectangles, wherein, The arrangement direction of the second detection electrodes is the same as or opposite to the arrangement direction of the first detection electrodes. 7. The touch screen detection method according to claim 1, wherein the touch screen further comprises a third area, there is a joint boundary between the third area and the second area, and the third area in the third area The arrangement direction of the three detection electrodes is the same as or opposite to the arrangement direction of the first detection electrodes. 8. A touch screen detection device, characterized in that the touch screen includes a first area and a second area, wherein there is a joint boundary between the first area and the second area, and the device includes: a first detection module, configured to detect a touch point on the first area of the touch screen; A first acquisition module, configured to acquire at least one first detection electrode touched by the touch point in the first area; A second detection module, configured to detect whether the touch point is located within a preset area centered on the combined boundary; The second acquisition module is configured to acquire the touch point in the second area that is related to the at least one first detection when the second detection module detects that the touch point is located in a preset area centered on the combined boundary. at least one second detection electrode corresponding to the electrode; and A determination module, configured to determine the position of the touch point according to the at least one first detection electrode and the at least one second detection electrode. 9. The touch screen detection device according to claim 8, wherein the second detection module comprises: a first acquisition unit, configured to acquire at least one first capacitance variation corresponding to the at least one first detection electrode; A second acquiring unit, configured to acquire the ordinate of the touch point according to the at least one first capacitance variation and a first preset algorithm; and A judging unit, configured to judge whether the ordinate is within a preset range to detect whether the touch point is located within a preset area centered on the combined boundary. 10. The touch screen detection device according to claim 9, wherein the second detection module is further configured to detect that the touch point is located at a distance between the joint boundary and the vertical coordinate when the ordinate is within a preset range. within a preset area of the center; when the ordinate is not within a preset range, it is detected that the touch point is not located within a preset area centered on the combined boundary. 11. The touch screen detection device according to claim 10, wherein the second acquiring module comprises: The first acquisition unit is configured to acquire at least one channel in the touch screen where the at least one first detection electrode is located, wherein the channel connects the first detection electrode in the first area and the corresponding second the second detection electrode of the region; and The second acquisition unit is configured to acquire the corresponding at least one second detection electrode in the second area according to the at least one channel. 12. The touch screen detection device according to claim 9 or 11, wherein the determining module comprises: A first acquiring unit, configured to acquire at least one second capacitance variation corresponding to the at least one second detection electrode; and The second acquiring unit is configured to acquire the coordinates of the touch point according to the at least one first capacitance variation, the at least one second capacitance variation, and a second preset algorithm. 13. The touch screen detection device according to claim 8, characterized in that, the first detection electrode and the second detection electrode are respectively a right triangle, and every two of the first detection electrodes are arranged in sequence to form a A rectangular pattern, the first region has a plurality of the rectangles, and every two of the second detection electrodes are arranged in sequence to form a rectangular pattern, the second region has a plurality of the rectangles, wherein, The arrangement direction of the second detection electrodes is the same as or opposite to the arrangement direction of the first detection electrodes. 14. The touch screen detection device according to claim 8, characterized in that, the touch screen further comprises a third area, there is a joint boundary between the third area and the second area, and the third area in the third area The arrangement direction of the three detection electrodes is the same as or opposite to the arrangement direction of the first detection electrodes.