CN114740284A - Detection method and device for touch screen panel - Google Patents

Abstract

The invention discloses a method and a device for detecting a touch screen panel, wherein the method comprises the following steps: acquiring capacitance matrix data of the touch screen panel; comparing whether all capacitance values in the capacitance matrix data are within a first preset range; if not, marking the capacitor corresponding to the capacitance value which is not in the first preset range as an abnormal capacitor; judging whether the number of the abnormal capacitors meets a preset number condition or not; and if not, judging the touch screen panel as a defective product. The method can screen at least from two dimensions of the size of the capacitance value and the quantity of the abnormal capacitance, can reduce the probability of over-judgment, avoids the problem that the good touch screen panel is judged to be a defective product, reduces the production cost and improves the production efficiency.

Description

Detection method and device for touch screen panel

technical field

The present invention relates to the technical field of touch screen panels, and in particular, to a detection method and device for a touch screen panel.

Background technique

When detecting the touch screen panel, each capacitance value of the touch screen panel can be judged. For example, a certain reference value can be used to determine a certain percentage up and down. When the actual capacitance value exceeds the percentage, it is judged that the capacitance value is abnormal. , the corresponding screen will be judged as defective. However, such a judgment method is prone to problems. Specifically, if the specific percentage is set too small, more touch screen panels will be judged as defective products, and there is a problem of over-judgment. Otherwise, there will be a problem of missed judgment. In order to prevent missed judgments, there will be a problem of over-judgment, and the panels that can be used are judged as defective products, which increases the production cost of enterprises.

SUMMARY OF THE INVENTION

In order to solve the problem of over-judgment in the prior art, the purpose of the present invention is to provide a detection method and device for a touch screen panel that can reasonably judge whether it is a defective product.

In order to achieve the above purpose of the invention, an embodiment of the present invention provides a detection method for a touch screen panel, including the following steps:

acquiring capacitance matrix data of the touch screen panel;

comparing whether each capacitance value in the capacitance matrix data is all within a first preset range;

If not, proceed as follows:

marking the capacitance corresponding to the capacitance value not within the first preset range as an abnormal capacitance;

judging whether the quantity of the abnormal capacitors complies with the preset quantity condition;

If not, the touch screen panel is judged as a defective product.

As a further improvement of the present invention, wherein the abnormal capacitance includes an upper limit abnormal capacitance exceeding the upper limit of the first preset range, and the preset quantity condition includes an upper limit quantity condition;

The step "judging whether the number of abnormal capacitors meets the preset number condition" includes:

It is judged whether the quantity of the upper limit abnormal capacitors complies with the upper limit quantity condition.

As a further improvement of the present invention, the upper limit quantity condition includes upper limit row continuous value, upper limit row non-continuous value, upper limit column continuous value, and upper limit column non-continuous value;

Also includes steps:

judging whether the number of the upper limit abnormal capacitors is less than the upper limit row continuous value, the upper limit row discontinuous value, the upper limit column continuous value, and the upper limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

As a further improvement of the present invention, wherein, the abnormal capacitance includes a lower limit abnormal capacitance lower than the lower limit of the first preset range, and the preset quantity condition includes a lower limit quantity condition;

The step "judging whether the number of abnormal capacitors meets the preset number condition" includes:

It is judged whether the quantity of the lower limit abnormal capacitors meets the lower limit quantity condition.

As a further improvement of the present invention, the lower limit quantity condition includes a lower limit row continuous value, a lower limit row non-continuous value, a lower limit column continuous value, and a lower limit column non-continuous value;

Also includes steps:

judging whether the number of the lower limit abnormal capacitors is less than the lower limit row continuous value, the lower limit row discontinuous value, the lower limit column continuous value, and the lower limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

As a further improvement of the present invention, the step "obtaining capacitance matrix data of the touch screen panel" includes:

Obtain the capacitance acquisition data set;

Obtain the number of rows and columns of capacitances of the touch screen panel;

According to the number of rows and the number of columns, the capacitance acquisition data set is adjusted to the capacitance matrix data.

As a further improvement of the present invention, the step of "compare each capacitance value in the capacitance matrix data is all within the first preset range" includes:

comparing whether each capacitance value in the capacitance matrix data is all within a first preset range;

If yes, then perform a mixed calculation judgment, and the mixed calculation judgment includes the steps:

calculating the difference between the capacitance values of two adjacent rows in the capacitance matrix data, generating row difference matrix data, calculating the sum of the difference values of each column in the row difference matrix data, generating column sum difference matrix data, and/or ,

Calculate the difference between the capacitance values of two adjacent columns in the capacitance matrix data, generate column difference matrix data, calculate the sum of the difference values of each row in the column difference matrix data, and generate row sum difference matrix data;

According to the row difference matrix data and the column sum difference matrix data, and/or the column difference matrix data and the row sum difference matrix data, it is determined whether the touch screen panel is a good product.

As a further improvement of the present invention, the mixed calculation judgment also includes the steps:

Compare whether all data in the row difference matrix data are all within the preset row difference matrix range, and/or,

comparing whether all data in the column difference matrix data are all within the range of a preset column difference matrix, and/or,

comparing whether all data in the column and difference matrix data are all within a preset column and difference matrix range, and/or,

Compare whether all the data in the row and difference matrix data are all within the range of the preset row and difference matrix;

If so, the touch screen panel is judged as a good product;

If not, the touch screen panel is judged as a defective product.

As a further improvement of the present invention, the step of "judging whether the quantity of the abnormal capacitors meets the preset quantity condition" includes:

judging whether the quantity of the abnormal capacitors complies with the preset quantity condition;

If so, proceed as follows:

Comparing whether each capacitance value of the abnormal capacitance is within a second preset range, wherein the lower limit of the second preset range is lower than the lower limit of the first preset range, and/or the second preset range The upper limit of the preset range is higher than the upper limit of the first preset range;

If at least one capacitance value is not within the second preset range, the touch screen panel is determined as a defective product.

As a further improvement of the present invention, the step of "compare each capacitance value of the abnormal capacitance is within the second preset range" includes:

comparing whether each capacitance value of the abnormal capacitance is within a second preset range;

If all the capacitance values are within the second preset range, the mixed calculation judgment is performed.

As a further improvement of the present invention, the step of "judging whether the quantity of the abnormal capacitors meets the preset quantity condition" includes:

judging whether the quantity of the abnormal capacitors complies with the preset quantity condition;

If yes, then perform the mixed calculation judgment.

To achieve one of the above purposes of the invention, an embodiment of the present invention provides a detection device for a touch screen panel, including:

an acquisition module for acquiring capacitance matrix data of the touch screen panel;

The first judgment module is used to compare whether each capacitance value in the capacitance matrix data is all within the first preset range, and if not, mark the capacitance corresponding to the capacitance value that is not within the first preset range as abnormal capacitance;

The second judging module is used for judging whether the quantity of the abnormal capacitance meets the preset quantity condition, and if not, judging the touch screen panel as a defective product.

To achieve one of the above purposes of the invention, an embodiment of the present invention provides an electronic device, including:

A storage module, which stores a computer program;

The processing module, when executing the computer program, can implement the steps in the above-mentioned touch screen panel detection method.

To achieve one of the above purposes of the invention, an embodiment of the present invention provides a readable storage medium storing a computer program, which can implement the steps in the above-mentioned touch screen panel detection method when the computer program is executed by the processing module.

Compared with the prior art, the present invention has the following beneficial effects: by using the detection method of the touch screen panel, at least two dimensions of the capacitance value and the amount of abnormal capacitance can be screened, which can reduce the probability of excessive judgment and avoid good products. The problem that the touch screen panel is judged to be a defective product reduces the production cost and improves the production efficiency.

Description of drawings

FIG. 1 is a flowchart of an embodiment of a detection method for a touch screen panel of the present invention;

FIG. 2 is a flowchart of another embodiment of the detection method of the touch screen panel of the present invention;

3 is a schematic diagram of an embodiment of capacitance matrix data after marked abnormal capacitances according to an embodiment of the present invention;

4 is a schematic diagram of another embodiment of capacitance matrix data after marked abnormal capacitances according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another embodiment of capacitance matrix data after marked abnormal capacitances according to an embodiment of the present invention;

6 is a data table of capacitance matrix data according to an embodiment of the present invention;

7 is a data table of row difference matrix data according to an embodiment of the present invention;

8 is a data table of column difference matrix data according to an embodiment of the present invention;

9 is a data table of column sum difference matrix data of an embodiment of the present invention;

FIG. 10 is a data table of row sum difference matrix data according to an embodiment of the present invention;

11 is a schematic block diagram of a detection device for a touch screen panel according to an embodiment of the present invention;

12 is a structural block diagram of a detection device for a touch screen panel according to an embodiment of the present invention;

Wherein, 100, a detection device; 10, a capacitance detection module; 20, a screen information acquisition module; 30, a processing module; 40, a storage module; 50, a communication bus.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the protection scope of the present invention.

An embodiment of the present invention provides a touch screen panel detection method, device, and storage medium, which can avoid the problem that a good touch screen panel is judged to be a defective product, reduce production costs, and improve production efficiency.

The detection method of the touch screen panel in this embodiment is based on the judgment of whether the capacitance value of each capacitor on the touch screen panel meets the requirements. The capacitance detection module 10 can detect the capacitance value, and then screen and analyze the data of the detected capacitance value, thereby forming the method.

FIG. 1 and FIG. 2 are flowcharts of detection methods for touch screen panels according to two embodiments of the present application, respectively, wherein FIG. 2 is a more specific embodiment of the entire process. Although the present application provides the operation steps of the method as described in the following embodiments or flow charts, based on routine or without creative work, in the steps of the method, there is no necessary causal relationship in logic, and the execution order of these steps is not It is limited to the execution order provided in the embodiments of the present application.

A specific detection method for a touch screen panel includes the following steps:

Step S1: acquiring capacitance matrix data of the touch screen panel;

Specifically, this step includes:

acquiring a capacitance acquisition data group, wherein the capacitance acquisition data group is data of a plurality of detected capacitance values;

Acquire the number of rows and columns of capacitances of the touch screen panel, where the number of rows and columns correspond to the actual arrangement on the panel;

According to the number of rows and the number of columns, the capacitance acquisition data group is adjusted to the capacitance matrix data, so that the capacitance acquisition data group is changed into matrix data of one row, one column and one column. For the matrix data, please refer to FIG. 6 . shown.

Step S2:

comparing whether each capacitance value in the capacitance matrix data is all within a first preset range;

The first preset range may be a matrix of a size corresponding to the capacitance matrix data, such as a 10×13 matrix, and the 10×13 matrix data of the capacitance matrix data is combined with a 10×13 first preset range. The matrix values are compared. The first preset range may also be all one value, for example, all values in the capacitance matrix data are compared with the same value.

For example, first determine a 10×13 benchmark matrix, and the first preset range is to float 20% up and down each value of the 10×13 benchmark matrix. For example, a certain value is 100, and the floating range is 80. All values within ~120 meet the requirements. Compare each value in the capacitance matrix data with the range within which each reference value floats by 20%. If it is within the range, it meets the requirements, and if it is not within the range, it does not meet the requirements.

Step S3:

When each capacitance value in the capacitance matrix data is not all within the first preset range, step S3 may be performed, and the details are as follows:

marking the capacitance corresponding to the capacitance value not within the first preset range as an abnormal capacitance;

judging whether the quantity of the abnormal capacitors complies with the preset quantity condition;

If not, the touch screen panel is judged as a defective product.

Specifically, the abnormal capacitance includes an upper limit abnormal capacitance exceeding the upper limit of the first preset range, and the preset quantity condition includes an upper limit quantity condition;

The upper limit quantity condition includes upper limit row continuous value, upper limit row discontinuous value, upper limit column continuous value, and upper limit column discontinuous value;

Step S3 includes:

Step S311:

It is judged whether the quantity of the upper limit abnormal capacitors complies with the upper limit quantity condition.

Step S312:

judging whether the number of the upper limit abnormal capacitors is less than the upper limit row continuous value, the upper limit row discontinuous value, the upper limit column continuous value, and the upper limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

Further, the abnormal capacitance includes a lower limit abnormal capacitance lower than the lower limit of the first preset range, and the preset quantity condition includes a lower limit quantity condition;

The lower limit quantity condition includes a lower limit row continuous value, a lower limit row non-continuous value, a lower limit column continuous value, and a lower limit column non-continuous value;

Step S3 also includes:

Step S321:

It is judged whether the quantity of the lower limit abnormal capacitors meets the lower limit quantity condition.

Step S322:

judging whether the number of the lower limit abnormal capacitors is less than the lower limit row continuous value, the lower limit row discontinuous value, the lower limit column continuous value, and the lower limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

Taking FIGS. 3 , 4 and 5 as examples, the above-mentioned step S3 will be described in more detail.

The continuous value of the upper limit row is 2, the discontinuous value of the upper limit row is 2, the continuous value of the upper limit column is 5, and the discontinuous value of the upper limit column is 5, and OK in Figures 3, 4, and 5 means that the capacitance value is within the first preset range. The normal capacitance within the range, NG is the upper limit abnormal capacitance that exceeds the upper limit of the first preset range, for example:

In Figure 3, the row continuous value is 1, the column continuous value is 4, and there is no abnormal capacitance of row discontinuity and column discontinuity, while the upper limit row continuous value is 2, and the upper limit column continuous value is 5, all within the requirements, so, This screen meets the requirements in the judgment of step S3;

In Figure 4, the row continuous value is 2, the column continuous value is 2, there is no abnormal capacitance of row discontinuity and column discontinuity, and the upper row continuous value is 2, and the upper column continuous value is 5, so the row continuous value is not less than the upper limit row continuous value, therefore, this screen is directly judged as defective product in step S3;

In Figure 5, the row continuous value is 2, the column continuous value is 4, there is no abnormal capacitance of row discontinuity and column discontinuity, while the upper row continuous value is 2, the upper column continuous value is 5, and the row continuous value is not less than the upper limit row continuous value, therefore, the screen is directly judged as defective in step S3.

In addition, the upper limit row continuous value is 3, the upper limit row non-continuous value is 3, the upper limit column continuous value is 3, and the upper limit column non-continuous value is 3 as an example to explain:

In Figure 3, the row continuous value is 1, the column continuous value is 4, there is no abnormal capacitance of row discontinuity and column discontinuity, while the upper row continuous value is 3, the upper column continuous value is 3, and the row continuous value is greater than the upper limit row continuous value. value, not in the requirement. Therefore, the screen is directly judged as a defective product in step S3;

In Figure 4, the row continuous value is 2, the column continuous value is 2, and there is no abnormal capacitance of row discontinuity and column discontinuity, while the upper limit row continuous value is 3, and the upper limit column continuous value is 3, all within the requirements, so, This screen meets the requirements in the judgment of step S3;

In Figure 5, the row continuous value is 2, the column continuous value is 4, there is no abnormal capacitance of row discontinuity and column discontinuity, while the upper row continuous value is 3, the upper column continuous value is 3, and the column continuous value is not less than the upper limit The columns are continuous values, so the screen is directly judged as defective in step S3.

Similarly, when NG in FIGS. 3 , 4 and 5 is partially abnormal capacitance at the upper limit that exceeds the upper limit of the first preset range, and partially is abnormal capacitance at the lower limit that is less than the lower limit of the first preset range, and or all When it is the lower limit abnormal capacitance smaller than the lower limit of the first preset range, the above method can also be used for judgment.

Through the above judgment, find a single or multiple rectangles composed of abnormal capacitances on the screen. Some abnormal capacitances are, for example, the location of the camera, the area where the light sensor is located, or some specific areas, or areas that can be repaired. When these rectangular areas exist It does not mean that the screen is directly defective, so adjust the continuous value of the upper limit row, the discontinuous value of the upper limit row, the continuous value of the upper limit column, and the discontinuous value of the upper limit column, and/or the continuous value of the lower limit row and the discontinuous value of the lower limit row. , the continuous value of the lower limit column, and the different parameters of the non-continuous value of the lower limit column, which can meet the needs of different rectangle sizes and quantities for screening. When the size and quantity exceed the requirements of these rectangles, it will be judged as a defective product.

Step S4:

In step S2, when each capacitance value in the capacitance matrix data is all within the first preset range, step S4 may be performed:

Carry out a mixed calculation judgment, and the mixed calculation judgment includes the steps:

calculating the difference between the capacitance values of two adjacent rows in the capacitance matrix data, generating row difference matrix data, calculating the sum of the difference values of each column in the row difference matrix data, generating column sum difference matrix data, and/or ,

Calculate the difference between the capacitance values of two adjacent columns in the capacitance matrix data, generate column difference matrix data, calculate the sum of the difference values of each row in the column difference matrix data, and generate row sum difference matrix data;

According to the row difference matrix data and the column sum difference matrix data, and/or the column difference matrix data and the row sum difference matrix data, it is determined whether the touch screen panel is a good product.

Specifically, taking the tables in FIGS. 6 to 10 as examples, the above step S4 is described in more detail:

6 is a data table of capacitance matrix data according to an embodiment of the present invention, the data table lists the size of all capacitance values of the capacitance matrix data, and FIG. 6 is a 10×13 matrix;

FIG. 7 is a data table of row difference matrix data according to an embodiment of the present invention. After subtracting two adjacent rows in FIG. 6 , the absolute values are obtained to obtain FIG. 7 , which is a 9×13 matrix;

FIG. 8 is a data table of column difference matrix data according to an embodiment of the present invention. After subtracting two adjacent columns in FIG. 6 and taking the absolute value, FIG. 8 is obtained, and FIG. 8 is a 10×12 matrix;

FIG. 9 is a data table of column sum difference matrix data according to an embodiment of the present invention, and all columns in FIG. 7 are added and summed to obtain FIG. 9 , which is a 9×1 matrix;

FIG. 10 is a data table of row sum-difference matrix data according to an embodiment of the present invention. Figure 10 is obtained by adding and summing all the rows in FIG. 8 , and FIG. 10 is a 1×12 matrix.

Further, step S4 also includes the steps:

Compare whether all data in the row difference matrix data are all within the preset row difference matrix range, and/or,

comparing whether all data in the column difference matrix data are all within the range of a preset column difference matrix, and/or,

comparing whether all data in the column and difference matrix data are all within a preset column and difference matrix range, and/or,

Compare whether all the data in the row and difference matrix data are all within the range of the preset row and difference matrix;

If so, the touch screen panel is judged as a good product;

If not, the touch screen panel is judged as a defective product.

The preset row difference matrix range, the preset column difference matrix range, the preset column and difference matrix range, and the preset row and difference matrix range can all be a matrix of corresponding size, and the value of each position in the matrix is equal to one. For a corresponding comparison, for example, the 9×13 matrix data of the row difference matrix is compared with the numerical value of a 9×13 preset row difference matrix. The preset row difference matrix range, the preset column difference matrix range, the preset column and difference matrix range, and the preset row and difference matrix range can also be all one value, for example, all values in the row difference matrix data are combined with Compare with the same value.

The above comparison can only compare any item, or all of them. When all are compared, the effect is better. The meaning of the comparison is:

There is a problem in the test. The capacitance value of a measured point is close to the upper limit of the normal value, and the capacitance value of other adjacent measured points is close to the lower limit of the normal value. In actual production, this phenomenon generally occurs in the entire row or column. occurs, then this situation can be passed by the previous detection method, but because the difference between the adjacent two capacitance values is too large, in fact, this type of screen is unqualified, that is to say, in the existing judgment, there are The problem of omission of judgment turns bad products into good products.

Therefore, by comparing row difference matrix data, column difference matrix data, row sum difference matrix data and column sum difference matrix data, the capacitances of adjacent rows, the capacitances of adjacent columns, the capacitances of all rows, the capacitances of all columns can be compared A relationship is established between capacitances. For example, in FIG. 9 , if all values in the column and difference matrix data are required to be below 2000, it can be determined that the touch screen panel is a defective product.

The judgment in step S4 takes into account the uniformity of the difference in capacitance between adjacent points of the touch screen panel and the uniformity of the difference in capacitance of the entire touch screen panel, so the problems of missed detection and missed judgment are avoided.

Step S5:

On the basis of step S3, when the number of the abnormal capacitors meets the preset number condition, then step S5 is performed. One implementation of step S5 is as follows:

Comparing whether each capacitance value of the abnormal capacitance is within a second preset range, wherein the lower limit of the second preset range is lower than the lower limit of the first preset range, and/or the second preset range The upper limit of the preset range is higher than the upper limit of the first preset range;

If at least one capacitance value is not within the second preset range, the touch screen panel is determined as a defective product.

For example, in step S2, the first preset range is, for example, 20% up and down, the reference value is 100, and the capacitance value is within the range of 80-120, and the second preset range is, for example, up and down. 40%, at this time, the capacitance value is within the range of 60 to 140. It is equivalent to relaxing the requirements of the point capacitance value on the basis of judging that the quantity meets the requirements. If it still cannot be satisfied under the relaxed conditions, the touch screen panel judged to be defective.

In this way, the problem of over-inspection of some screens is avoided. At the same time, the premise of relaxing from the first preset range to the second preset range is on the basis that the quantity meets the requirements, so it also avoids missing inspection and judging defective products as good products. The problem.

Further, the step "compare each capacitance value of the abnormal capacitance is within the second preset range" includes:

comparing whether each capacitance value of the abnormal capacitance is within a second preset range;

If all the capacitance values are within the second preset range, the mixed calculation judgment is performed, that is, the judgment of step S4 is performed.

At this time, some of the capacitors are within the requirements of the second preset range. Since the uniformity of the adjacent capacitors and the uniformity of the whole are uncertain, step S4 is used to screen again to further judge whether it is a good product.

In other embodiments of step S5, another implementation manner of step S5 is as follows:

The mixed calculation judgment is performed, that is, the judgment of step S4 is directly performed.

If some screens may have a row and a column with a capacitance value of 0, even if the second preset range is judged, it still fails, but it may be normal for the capacitance value of the row and column to be 0, such as the camera position, The capacitance at the position of the light sensor may be very small or even 0, so the judgment of the second preset range is not performed at this time, and the judgment of step S4 is directly performed.

Compared with the prior art, this embodiment has the following beneficial effects:

Using the touch screen panel detection method can reduce the probability of over-judgment, at least from the two dimensions of the capacitance value and the amount of abnormal capacitance, which avoids the problem that a good touch screen panel is judged to be a defective product, and reduces the production cost. , improve production efficiency.

In one embodiment, as shown in FIG. 11 , it is a schematic block diagram of a detection apparatus 100 for a touch screen panel provided by an embodiment of the present invention. The detection apparatus 100 for a touch screen panel includes:

an acquisition module for acquiring capacitance matrix data of the touch screen panel;

The first judgment module is used to compare whether each capacitance value in the capacitance matrix data is all within the first preset range, and if not, mark the capacitance corresponding to the capacitance value that is not within the first preset range as abnormal capacitance;

The second judging module is used for judging whether the quantity of the abnormal capacitance meets the preset quantity condition, and if not, judging the touch screen panel as a defective product.

In one embodiment, the second judging module is further configured to judge whether the quantity of the upper limit abnormal capacitors complies with the upper limit quantity condition.

In one embodiment, the second judgment module is further configured to judge whether the number of the upper limit abnormal capacitors is less than the upper limit row continuous value, the upper limit row discontinuous value, the upper limit column continuous value, and the upper limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

In one embodiment, the second judging module is further configured to judge whether the number of abnormal capacitors with the lower limit complies with the lower limit quantity condition.

In one embodiment, the second judgment module is further configured to judge whether the number of the lower limit abnormal capacitors is less than the lower limit row continuous value, the lower limit row discontinuous value, the lower limit column continuous value, and the lower limit column discontinuous value;

If not, the touch screen panel is judged as a defective product.

In one embodiment, the detection device 100 of the touch screen panel further includes a processing module 30, the acquisition module includes a capacitance detection module 10 and a screen information acquisition module 20, and the capacitance detection module 10 is used to acquire a capacitance collection data set;

The screen information acquisition module 20 acquires the number of rows and columns of capacitances of the touch screen panel;

The processing module 30 adjusts the capacitance acquisition data group into the capacitance matrix data according to the row number and the column number.

In one embodiment, the processing module 30 may also perform a mixed calculation judgment, and the mixed calculation judgment includes:

calculating the difference between the capacitance values of two adjacent rows in the capacitance matrix data, generating row difference matrix data, calculating the sum of the difference values of each column in the row difference matrix data, generating column sum difference matrix data, and/or ,

Calculate the difference between the capacitance values of two adjacent columns in the capacitance matrix data, generate column difference matrix data, calculate the sum of the difference values of each row in the column difference matrix data, and generate row sum difference matrix data;

The detection device 100 of the touch screen panel further includes a third judgment module, and the third judgment module is configured to determine the data according to the row difference matrix data and the column sum difference matrix data, and/or the column difference matrix data and the row sum difference matrix data. matrix data to determine whether the touch screen panel is a good product.

In one embodiment, the third judgment module is further used for:

Compare whether all data in the row difference matrix data are all within the preset row difference matrix range, and/or,

comparing whether all data in the column difference matrix data are all within the range of a preset column difference matrix, and/or,

comparing whether all data in the column and difference matrix data are all within a preset column and difference matrix range, and/or,

Compare whether all the data in the row and difference matrix data are all within the range of the preset row and difference matrix;

If so, the touch screen panel is judged as a good product;

If not, the touch screen panel is judged as a defective product.

In one embodiment, the detection device 100 for a touch screen panel further includes a fourth judgment module, and the fourth judgment module compares whether each capacitance value of the abnormal capacitance is within a second preset range, wherein the second preset The lower limit of the range is lower than the lower limit of the first preset range, and/or the upper limit of the second preset range is higher than the upper limit of the first preset range;

If at least one capacitance value is not within the second preset range, the touch screen panel is determined as a defective product.

In one embodiment, the fourth judgment module is further configured to transfer all capacitance values to the processing module 30 for the mixed calculation judgment when all the capacitance values are within the second preset range.

In one embodiment, the third judging module is further configured to, when the quantity of the abnormal capacitors meets a preset quantity condition, transfer it to the processing module 30 for the mixed calculation and judgment.

According to the detection device 100 of the touch screen panel of the present invention, the probability of over-judgment can be reduced, at least from the two dimensions of the capacitance value and the amount of abnormal capacitance, which avoids the problem that a good touch screen panel is judged to be a bad product, and reduces the Production costs, improve production efficiency.

The detection apparatus 100 of the touch screen panel may also include computing devices such as a computer, a notebook, a palmtop computer, and a cloud server. Those skilled in the art can understand that the schematic diagram is only an example of the detection apparatus 100 of the touch screen panel, and does not constitute a limitation on the terminal equipment of the detection apparatus 100 of the touch screen panel, and may include more or less components than those shown in the figure, or Combining some components, or different components, for example, the detection apparatus 100 of the touch screen panel may also include input and output devices, network access devices, buses, and the like.

It should be noted that, for details not disclosed in the touch screen panel detection apparatus 100 according to the embodiment of the present invention, please refer to the details disclosed in the touch screen panel detection method according to the embodiment of the present invention.

In addition to the above-mentioned modules, the detection device 100 for a touch screen panel further includes a processing module 30, a storage module 40, and a computer program stored in the storage module 40 and running on the processing module 30, such as the above-mentioned detection of a touch screen panel method program. When the processing module 30 executes the computer program, the steps in each of the foregoing embodiments of the detection method for a touch screen panel are implemented, for example, the steps shown in FIG. 1 and FIG. 2 .

The capacitance detection module 10 acquires the capacitance acquisition data set, the screen information acquisition module 20 acquires the relevant parameters of the touch screen panel, such as the row number M and the column number N of the capacitance of the touch screen panel, and the processing module 30 adjusts the capacitance acquisition data set For the capacitance matrix data of M*N, the above-mentioned judging method is used for it, which is calculated in the processing module 30 and compared with each preset range value in the storage module 40, thereby judging the quality of the touch screen panel.

As shown in FIG. 12 , the detection device 100 of the touch screen panel may further include a communication bus 50. The communication bus 50 is used to establish a connection between the capacitance detection module 10, the screen information acquisition module 20, the processing module 30 and the storage module 40. The communication bus 50 may include a channel for transmitting information among the above-mentioned capacitance detection module 10 , screen information acquisition module 20 , processing module 30 and storage module 40 .

In addition, the present invention also proposes an electronic device, which includes a storage module 40 and a processing module 30. When the processing module 30 executes the computer program, the steps in the above-mentioned touch screen panel detection method can be implemented, that is, the above-mentioned method can be implemented. The steps in any one of the technical solutions in the detection method of the touch screen panel.

The electronic device may be a part of the detection apparatus 100 integrated in the touch screen panel, or a local terminal device, or a part of a cloud server.

The processing module 30 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processing module 30 is the control center of the detection device 100 of the touch screen panel, and uses various interfaces and lines to connect various parts of the detection device 100 of the entire touch screen panel.

The storage module 40 can be used to store the computer programs and/or modules, and the processing module 30 executes or executes the computer programs and/or modules stored in the storage module 40, and invokes the computer programs and/or modules stored in the storage module 40. data to realize various functions of the detection device 100 of the touch screen panel. The memory may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the storage data area may store Data such as audio data, phone book, etc.) created according to the use of the mobile phone. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory such as hard disk, internal memory, plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card , a flash memory card (Flash Card), at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

Exemplarily, the computer program can be divided into one or more modules/units, and the one or more modules/units are stored in the storage module 40 and executed by the processing module 30 to complete. this invention. The one or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program in the detection method of the touch screen panel.

Further, an embodiment of the present invention provides a readable storage medium, which stores a computer program, and when the computer program is executed by the processing module 30, can realize the steps in the above-mentioned touch screen panel detection method, that is, realize The steps in any one of the technical solutions in the above-mentioned detection method of a touch screen panel.

If the modules integrated in the detection device 100 of the touch screen panel are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented.

Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Electric carrier signals and telecommunication signals are not included.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Changes should all be included within the protection scope of the present invention.

Claims (12)

1. A method for detecting a touch screen panel, comprising the steps of:

acquiring capacitance matrix data of the touch screen panel;

comparing whether each capacitance value in the capacitance matrix data is in a first preset range or not;

if not, the following steps are carried out:

marking the capacitance corresponding to the capacitance value which is not in the first preset range as an abnormal capacitance;

judging whether the number of the abnormal capacitors meets a preset number condition or not;

and if not, judging the touch screen panel as a defective product.

2. The detection method according to claim 1, wherein the abnormal capacitance includes an upper limit abnormal capacitance exceeding an upper limit of the first preset range, and the preset number condition includes an upper limit number condition;

the step of judging whether the number of the abnormal capacitors meets a preset number condition comprises the following steps:

and judging whether the number of the upper limit abnormal capacitors meets an upper limit number condition.

3. The detection method according to claim 2, wherein the upper limit number condition includes an upper limit row continuous value, an upper limit row discontinuous value, an upper limit column continuous value, an upper limit column discontinuous value;

further comprising the steps of:

judging whether the number of the upper limit abnormal capacitors is smaller than an upper limit row continuous value, an upper limit row discontinuous value, an upper limit column continuous value and an upper limit column discontinuous value;

and if not, judging the touch screen panel as a defective product.

4. The detection method according to claim 1, wherein the abnormal capacitance includes a lower limit abnormal capacitance lower than a lower limit of the first preset range, and the preset number condition includes a lower limit number condition;

the step of judging whether the number of the abnormal capacitors meets a preset number condition comprises the following steps:

and judging whether the number of the lower limit abnormal capacitors meets the lower limit number condition or not.

5. The detection method according to claim 4, wherein the lower limit number condition includes a lower limit row continuous value, a lower limit row discontinuous value, a lower limit column continuous value, a lower limit column discontinuous value;

further comprising the steps of:

judging whether the quantity of the lower limit abnormal capacitors is smaller than a lower limit row continuous value, a lower limit row discontinuous value, a lower limit column continuous value and a lower limit column discontinuous value or not;

and if not, judging the touch screen panel as a defective product.

6. The detecting method according to claim 1, wherein the step of "acquiring capacitance matrix data of the touch screen panel" comprises:

acquiring a capacitance acquisition data set;

acquiring the number of rows and the number of columns of the capacitor of the touch screen panel;

and adjusting the capacitance acquisition data set into the capacitance matrix data according to the row number and the column number.

7. The method of claim 1, wherein the step of comparing whether each capacitance value in the capacitance matrix data is all within a first predetermined range comprises:

comparing whether each capacitance value in the capacitance matrix data is in a first preset range or not;

if yes, performing mixed calculation judgment, wherein the mixed calculation judgment comprises the following steps:

calculating differences between capacitance values of two adjacent rows in the capacitance matrix data to generate row difference matrix data, calculating a sum of differences of each column in the row difference matrix data to generate column sum difference matrix data, and/or,

calculating the difference value of capacitance values of two adjacent columns in the capacitance matrix data to generate column difference value matrix data, calculating the sum of the difference values of each row in the column difference value matrix data to generate row difference matrix data;

and judging whether the touch screen panel is good or not according to the row difference value matrix data, the column difference value matrix data, the row difference value matrix data and the difference matrix data and/or the column difference value matrix data, the row difference value matrix data and the difference matrix data.

8. The detection method according to claim 7, wherein the hybrid computation determination further comprises the steps of:

comparing whether all the data in the row difference matrix data are all within a preset row difference matrix range, and/or,

comparing whether all of the data in the column difference matrix data are all within a preset column difference matrix range, and/or,

comparing whether all of the column and difference matrix data are within a preset column and difference matrix range, and/or,

comparing whether all data in the row and difference matrix data are all in a preset row and difference matrix range;

if yes, judging the touch screen panel to be a good product;

and if not, judging the touch screen panel as a defective product.

9. The detecting method according to claim 7, wherein the step of determining whether the number of the abnormal capacitors meets a preset number condition comprises:

judging whether the number of the abnormal capacitors meets a preset number condition or not;

if yes, the following steps are carried out:

comparing whether each capacitance value of the abnormal capacitor is within a second preset range, wherein the lower limit of the second preset range is lower than the lower limit of the first preset range, and/or the upper limit of the second preset range is higher than the upper limit of the first preset range;

and if at least one capacitance value is not in the second preset range, judging the touch screen panel as a defective product.

10. The detection method according to claim 9, wherein the step of "comparing whether each capacitance value of the abnormal capacitance is within a second preset range" includes:

comparing whether each capacitance value of the abnormal capacitor is within a second preset range;

and if all the capacitance values are within a second preset range, performing the mixed calculation judgment.

11. The detecting method according to claim 7, wherein the step of determining whether the number of the abnormal capacitors meets a preset number condition comprises:

judging whether the number of the abnormal capacitors meets a preset number condition or not;

and if so, performing the mixed calculation judgment.

12. A sensing apparatus of a touch screen panel, comprising:

the acquisition module is used for acquiring the capacitance matrix data of the touch screen panel;

the first judgment module is used for comparing whether all capacitance values in the capacitance matrix data are within a first preset range, and if not, marking the capacitance corresponding to the capacitance value which is not within the first preset range as an abnormal capacitance;

and the second judging module is used for judging whether the quantity of the abnormal capacitors meets the preset quantity condition or not, and if not, judging the touch screen panel as a defective product.

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