Test methods and test systems for sensing electrodes

Abstract

This invention relates to a testing method and system for sensing electrodes. The testing method includes cutting sensing electrodes, fabricated on a substrate using a screen printing process, to obtain multiple sensing electrode groups. Electrical tests are then performed on a subset of the sensing electrodes within each group, and the degree of difference in the test data is compared. Based on this degree of difference, each sensing electrode in the sensing electrode group is labeled. The testing system is used to implement the above-described testing method. The testing method and system provided by this invention reduce the damage to biosensitive materials on the surface of the sensing electrodes caused by existing testing methods. They also reduce energy waste and subsequent assembly inconvenience due to numerous test threads, and improve testing efficiency, further meeting the needs of mass production.

Description

Technical Field

[0001] This invention generally relates to the field of sensor manufacturing, and specifically to a testing method and system for sensor electrodes. Background Technology

[0002] Sensing electrodes, also known as biosensing electrodes, biosensors, or bioelectrodes, are sensors that use biological materials as sensitive elements. They generate a weak current by utilizing the redox reaction or other catalytic reaction on the surface of the positive and negative electrodes with sensitive elements, and form a potential difference between the positive and negative electrodes. By measuring the potential difference, they can characterize the degree of chemical reaction or the concentration of chemical components. They are widely used in medical, industrial production, environmental monitoring and other fields.

[0003] As user demands increase, test components with sensing electrodes are required to be manufactured into increasingly miniaturized structures, especially the sensing electrodes themselves. These electrodes need to be small and thin, and their surfaces need to be coated with biosensitive materials, presenting significant difficulties and challenges in the production and testing process. In existing technologies, the testing process or method for verifying the performance of sensing electrodes typically involves testing each sensing electrode using a test bed or test base of a testing device (see...). Figure 1 Alternatively, each sensing electrode can be connected in series and parallel via leads before testing a subset of the sensing electrodes (see [link]). Figure 2 Both methods offer high testing efficiency and can meet the needs of mass production. However, these methods involve testing numerous needle beds or leads, increasing equipment energy consumption and hindering the division of the sensing electrode into individual electrodes for subsequent assembly processes. Furthermore, both methods require contact with the surface of each sensing electrode, which can easily damage the biosensitive materials on the surface of the sensing electrode, thus affecting its performance.

[0004] In existing technologies, another method involves sampling and testing the sensing electrodes. This involves analyzing the test data of a subset of sensing electrodes from a batch to obtain the performance of the entire batch. However, in this method, if any of the tested sensing electrodes are deemed defective, all sensing electrodes in the entire batch will be marked as defective and require individual retesting, which is detrimental to improving testing efficiency and accuracy. Summary of the Invention

[0005] The present invention was made in view of the above-mentioned state of the prior art, and its purpose is to provide a testing method and testing system for sensing electrodes. The testing method and testing system can reduce the problem of damage to the biosensitive material on the surface of the sensing electrode during testing caused by existing testing methods, reduce the energy waste and subsequent assembly inconvenience caused by a large number of test needles, and improve testing efficiency to further meet the needs of mass production.

[0006] Therefore, a first aspect of the present invention provides a method for testing sensing electrodes, wherein the sensing electrodes are obtained by screen printing, and multiple sensing electrodes have the same arrangement pattern and are arranged in an array on a substrate. In the substrate, adjacent rows of sensing electrodes have row gaps, and adjacent columns of sensing electrodes have column gaps. The testing method includes: cutting the substrate along the direction of the row gaps or the column gaps to form multiple sensing electrode groups including multiple sensing electrodes. The sensing electrode groups are elongated and have a head position with one end of the elongated shape as the head and an end position with the other end of the elongated shape as the end. The sensing electrodes are arranged in a single row or a single column. A method is used to distribute the sensing electrodes in the group; the sensing electrode located at the first end is designated as the first sensing electrode, and the sensing electrode located at the last end is designated as the second sensing electrode. Electrical performance tests are performed on the first and second sensing electrodes in each of the sensing electrode groups to obtain first test data corresponding to the first sensing electrode and second test data corresponding to the second sensing electrode. The first and second test data are compared to obtain the degree of difference between the first and second sensing electrodes in each of the sensing electrode groups. And each of the sensing electrodes in the sensing electrode groups is marked based on the degree of difference.

[0007] In this invention, the small variability of sensing electrodes produced by screen printing is utilized. First, the sensing electrodes on the entire substrate are divided into multiple sensing electrode groups. Then, the sensing electrode groups are tested, with only the first and last sensing electrodes undergoing contact testing. Finally, the degree of difference in the test data of the first and last sensing electrodes is analyzed to determine whether the performance of the tested sensing electrode group meets the requirements. That is, the sensing electrodes are tested by using a test method that characterizes the whole from the individual. This reduces the problem of damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, reduces energy waste and subsequent assembly inconvenience caused by a large number of test needles, and improves testing efficiency to further meet the needs of mass production.

[0008] According to the testing method of the present invention, optionally, the degree of difference is represented by a numerical value. If the numerical value is less than a preset value, each of the sensing electrodes in the sensing electrode group is marked as a good product; if the numerical value is not less than the preset value, each of the sensing electrodes in the sensing electrode group is marked as a defective product. In this case, by representing the difference in the test data of the sensing electrodes numerically, it is possible to more quickly and intuitively determine whether the tested sensing electrodes are good products.

[0009] According to the testing method of the present invention, optionally, each group of sensing electrodes includes at least three of the aforementioned sensing electrodes. In this case, by testing the first and last two sensing electrodes in a group of sensing electrodes including at least three or more sensing electrodes, the whole can be characterized by the individual electrodes. This reduces the problem of damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, reduces energy waste and subsequent assembly inconvenience caused by a large number of test needles, and enables the testing efficiency to meet the needs of mass production.

[0010] According to the testing method of the present invention, optionally, the electrical performance test is at least one of circuit continuity testing, resistance testing, capacitance testing, and inductance testing. In this case, various indicators of the electrical performance of the sensing electrode can be obtained, and the performance of the sensing electrode can be judged based on these indicators when analyzing differences in subsequent tests.

[0011] According to the testing method of the present invention, optionally, the cutting method is one of laser cutting, blade cutting, or ultrasonic cutting. In this case, these cutting methods can distribute the sensing electrodes on the substrate into multiple groups of sensing electrodes with small differences, thereby facilitating subsequent testing of the sensing electrodes to determine their performance, and also reducing the problem of low accuracy when testing all the sensing electrodes of the entire substrate together.

[0012] According to the testing method of the present invention, optionally, the substrate is cut to obtain 4 to 12 groups of sensing electrodes. In this case, the sensing electrodes on the substrate can be divided into 4 to 12 groups of sensing electrodes with small differences, thereby facilitating subsequent testing of the sensing electrodes to determine their performance, and also reducing the problem of low accuracy when testing all the sensing electrodes of the entire substrate together.

[0013] According to the testing method of the present invention, optionally, the plurality of sensing electrode groups have the same number of sensing electrodes. In this case, it is convenient for the testing device to test each sensing electrode group, improving testing efficiency to meet the needs of mass production.

[0014] A second aspect of the present invention provides a testing system for sensing electrodes to implement any of the testing methods described in the first aspect of the present invention. The sensing electrodes are obtained by screen printing on a substrate. The testing system includes a cutting device and a testing device. The cutting device is configured to cut the substrate to form a plurality of sensing electrode groups including a plurality of the sensing electrodes. The testing device is configured to perform electrical performance tests on the plurality of sensing electrode groups to obtain a plurality of test data and analyze the degree of difference of the plurality of test data, and mark each of the sensing electrodes in the plurality of sensing electrode groups based on the degree of difference.

[0015] In this configuration, multiple sensing electrodes on the substrate can be cut and distributed into multiple sensing electrode groups using a cutting device. This facilitates subsequent testing of the sensing electrode groups and reduces the inaccuracy issues associated with testing all sensing electrodes on the entire substrate together. Furthermore, the testing device can test multiple sensing electrode groups and obtain the performance of the sensing electrodes based on the differences in the test data. This reduces the damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, minimizes energy waste and assembly inconvenience caused by numerous test threads, and ensures that the testing efficiency meets the requirements of mass production.

[0016] According to the testing system of the present invention, optionally, the cutting method of the cutting device is one of laser, blade, or ultrasonic, and the testing content of the testing device includes at least one of circuit continuity testing, resistance testing, capacitance testing, or inductance testing. In this case, the cutting device can cut and distribute the sensing electrodes on the substrate into multiple sensing electrode groups to facilitate subsequent testing of the sensing electrodes to determine their performance. In addition, it can reduce the problem of low accuracy when testing the sensing electrodes of the entire substrate together. Furthermore, the testing device can obtain various indicators of the electrical performance of the sensing electrodes, and the performance of the sensing electrodes can be determined based on these indicators when analyzing differences in subsequent tests.

[0017] According to the present invention, a testing method and testing system for sensing electrodes are provided, which can reduce the damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods during testing, reduce energy waste and subsequent assembly inconvenience caused by a large number of test needles, and improve testing efficiency to further meet the needs of mass production. Attached Figure Description

[0018] Figure 1 A schematic diagram of a testing method in the prior art involved in this invention is shown.

[0019] Figure 2A schematic diagram of another testing method in the prior art involved in this invention is shown.

[0020] Figure 3 A schematic diagram of the manufacturing process of the sensing electrode involved in this invention is shown.

[0021] Figure 4 A flowchart of a testing method for sensing electrodes according to the present invention is shown.

[0022] Figure 5 A schematic diagram of one embodiment of obtaining a group of sensing electrodes according to the present invention (obtained by cutting the inter-row gaps) is shown.

[0023] Figure 6 A schematic diagram is shown of another embodiment of obtaining a group of sensing electrodes according to the present invention (obtained by cutting the inter-row gaps).

[0024] Figure 7 A schematic diagram of a test scenario for the testing method for sensing electrodes involved in this invention is shown.

[0025] Figure 8 A structural block diagram of a testing system for sensing electrodes according to the present invention is shown. Detailed Implementation

[0026] It should be noted that the terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0027] The term "difference" used in this invention can sometimes be replaced by terms such as "consistency," "similarity," "degree of similarity," and "degree of deviation." Specifically, it refers to the similarity of similar test data between any two sensing electrodes involved in this invention (such as sensing electrodes at the beginning and end). For example, in a test, if the resistance of sensing electrode A in the same batch is 500 MΩ and the capacitance of sensing electrode A is 100 Farads, while the resistance of sensing electrode B in the same batch is 600 MΩ and the capacitance of sensing electrode B is 99.8 Farads, then it can be defined that the resistance of sensing electrode A and the resistance of sensing electrode B have a large difference (which can be judged by the difference). It can also be defined that the capacitance of sensing electrode A and the capacitance of sensing electrode B have a small difference (which can be judged by the difference). In addition, it can be defined that the resistance of sensing electrode A and the capacitance of sensing electrode B have no difference (i.e., resistance and capacitance are different types of test data).

[0028] In addition, the testing method and testing system for sensing electrodes involved in this invention (hereinafter sometimes referred to as testing method or method, testing system or system) can also be applied to other fields applicable to this invention besides sensing electrode manufacturing, such as the manufacturing of certain biochips, etc., which will not be described here.

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same components, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the components or the shapes of the components may differ from actual figures. It should also be noted that the sensing electrodes shown in the accompanying drawings are merely illustrative descriptions of the testing methods and systems for sensing electrodes involved in the present invention, and do not constitute any limitation on the sensing electrodes involved in the present invention. For example, the accompanying drawings required in the background art... Figure 1 and attached Figure 2 The sensing electrodes described herein are merely a general schematic description of existing technology and are not intended to limit the specific shape, structure, etc., of sensing electrodes in existing technology.

[0030] Figure 3 A schematic diagram of the manufacturing process of the sensing electrode involved in this invention is shown.

[0031] like Figure 3 As shown, in some examples, the process of manufacturing the sensing electrode can be simply summarized as material preparation, screen printing of the sensing electrode, pre-cutting, cutting, testing, and finished product packaging. This is merely an example and is not intended to limit the invention.

[0032] In some examples, "equipment" can refer to materials used in manufacturing, such as various biological or non-biological materials for manufacturing sensing electrodes, or substrates for manufacturing sensing electrodes.

[0033] In some examples, the sensing electrodes obtained through screen printing are arranged in an array on the substrate with the same pattern, and adjacent rows of sensing electrodes have row gaps, while adjacent columns of sensing electrodes have column gaps. In this case, obtaining sensing electrodes through screen printing results in sensing electrodes with good consistency (i.e., low variability), which is beneficial for subsequent testing.

[0034] In some examples, because the sensing electrodes are small and thin, they cannot be directly removed from the substrate. Pre-cutting (i.e., virtual cutting, where the cut sensing electrodes remain attached to the substrate, similar to virtual cutting in the packaging industry to facilitate user opening of products or packaging) is required before assembly, enlarged to a certain scale. This is followed by inter-row or inter-column cutting to obtain multiple sensing electrode groups. Inter-row or inter-column cutting facilitates the removal of pre-cut sensing electrodes for other assemblies without damaging them. In this embodiment, the cutting methods for pre-cutting and the cutting process can include, but are not limited to, laser cutting, blade cutting, or ultrasonic cutting. In this case, these cutting methods can distribute the sensing electrodes on the substrate into multiple groups with minimal differences, thereby facilitating subsequent testing to determine their performance and reducing the inaccuracy problem when testing all sensing electrodes on the entire substrate together.

[0035] In some examples, the tests may include, but are not limited to, electrical performance tests, physical performance tests, chemical performance tests, and functional simulation tests. In embodiments of the present invention, the electrical performance tests of the sensing electrode may include, but are not limited to, at least one of circuit continuity testing, resistance testing, capacitance testing, or inductance testing. In this case, various indicators of the electrical performance of the sensing electrode can be obtained, and the performance of the sensing electrode can be judged based on these indicators when subsequently analyzing differences.

[0036] In other examples, the cutting process can be classified as a testing process; in other words, the cutting step is a part of the testing method or process.

[0037] In some examples, sensor electrode groups or sensor electrodes that are marked as good after testing can be packaged as finished products. The packaging process may include, but is not limited to, coating, packaging, and assembly.

[0038] Figure 4 A flowchart of a testing method for sensing electrodes according to the present invention is shown. Figure 5A schematic diagram of one embodiment of the sensing electrode group involved in the present invention (obtained by cutting the inter-row gaps) is shown. Figure 6 A schematic diagram of another embodiment of the sensing electrode group involved in the present invention (obtained by cutting the inter-row gaps) is shown. Figure 7 A schematic diagram of a test scenario for the testing method for sensing electrodes involved in this invention is shown.

[0039] like Figure 4 As shown, in some examples, the testing method for sensing electrodes according to the present invention may include cutting to obtain a group of sensing electrodes (step S100), performing electrical performance testing on each group of sensing electrodes (step S200), performing difference comparison (step S300), and marking the tested sensing electrodes (step S400).

[0040] In some examples, the testing method may include cutting to obtain a group of sensing electrodes (step S100).

[0041] In some examples, in step S100, the substrate can be cut along any direction of the inter-row or inter-column spacing of the sensing electrodes on the substrate to form multiple sensing electrode groups including multiple sensing electrodes (see [reference]). Figure 5 or Figure 6 (As shown).

[0042] In some examples, in step S100, the substrate can be cut to obtain 4 to 12 groups of sensing electrodes. In this case, the sensing electrodes on the substrate can be divided into 4 to 12 groups of sensing electrodes with small differences, which facilitates subsequent testing of the sensing electrodes to determine their performance and also reduces the problem of low accuracy when testing all the sensing electrodes on the entire substrate together. In some examples, when the sensing electrodes on the substrate are cut and divided into multiple groups of sensing electrodes, the number of sensing electrodes and sensing electrode groups on the substrate is not limited. For example, in small-batch manufacturing, the number of sensing electrodes can be 32 to 80, and the number of sensing electrode groups can be 4 to 10. In mass production, the number of sensing electrodes can reach hundreds or thousands, and the number of sensing electrode groups can also be adjusted to a dozen to several dozen depending on the number of sensing electrodes and production needs.

[0043] In this embodiment, the number of sensing electrodes in multiple sensing electrode groups can be the same. In this case, it facilitates the testing device to test each sensing electrode group and improves testing efficiency to meet the needs of mass production. In other examples, the number of sensing electrodes in multiple sensing electrode groups can be different. In this case, adaptive testing can be performed according to the type of sensing electrode and different testing requirements.

[0044] In some examples, in step S100, such as Figure 5 , Figure 6 As shown, the sensing electrode group can be elongated, with one end as the starting point and the other end as the ending point. Furthermore, the sensing electrodes can be distributed in a single row or a single column within the sensing electrode group. In some examples, the sensing electrode group includes at least three sensing electrodes. In this case, by testing the first and last two sensing electrodes in a sensing electrode group containing at least three sensing electrodes, the whole can be characterized using the individual electrodes. This reduces the damage to the biosensitive materials on the sensing electrode surface caused by existing testing methods, reduces energy waste and subsequent assembly inconvenience due to numerous test threads, and allows the testing efficiency to meet the needs of mass production.

[0045] In some examples, the cutting direction can be either along the row-to-row or column-to-column gaps of the sensing electrodes on the substrate. In other examples, the cutting direction can be a combination of the row-to-row and column-to-column gaps of the sensing electrodes on the substrate. For example, the sensing electrodes on a square substrate can be cut and distributed into multiple groups of sensing electrodes resembling the letter "L" for subsequent testing. In this case, adaptive testing can be performed according to different testing requirements, thereby more accurately reflecting the performance of the sensing electrodes in different areas of the substrate.

[0046] In this embodiment, the cutting method can be at least one of laser cutting, blade cutting, and ultrasonic cutting.

[0047] In some examples, the testing method may include performing electrical performance tests on each group of sensing electrodes (step S200).

[0048] In some examples, in step S200, the sensing electrode located at the beginning position can be designated as the first sensing electrode, and the sensing electrode located at the end position can be designated as the second sensing electrode. Electrical performance tests are performed on the first and second sensing electrodes in each sensing electrode group to obtain first test data corresponding to the first sensing electrode and second test data corresponding to the second sensing electrode.

[0049] In some examples, in step S200, the electrical performance test of the sensing electrode may include, but is not limited to, at least one of circuit continuity testing, resistance testing, capacitance testing, and inductance testing.

[0050] In some examples, in step S200, as described above, if the cut sensing electrode group is elongated, the sensing electrode at the first end can be designated as the first sensing electrode, and the sensing electrode at the last end as the second sensing electrode. For example... Figure 7 As shown, along the length of the elongated sensing electrode group A, the sensing electrode group A may include multiple sensing electrodes a, b, c, d, e, f, g, h, i, and j. Sensing electrode a can serve as the first sensing electrode at the beginning, and j can serve as the second sensing electrode at the end. In other examples, to improve testing accuracy, at least one sensing electrode located in the middle (e.g., sensing electrodes b, c, d, e, f, g, h, and i) can be selected for testing, and the test data of the first and second sensing electrodes can be compared pairwise. Preferably, the number of sensing electrodes located in the middle for testing can be one or two. In this case, the test is not performed on all sensing electrodes on the substrate, thus reducing the number of test probes or leads, and consequently reducing direct contact with the sensing electrodes. This reduces the damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, and also reduces energy waste and subsequent assembly inconvenience caused by a large number of test probes.

[0051] In some examples, the testing method may include performing a difference comparison (step S300).

[0052] In some examples, in step S300, the first test data and the second test data can be compared to obtain the degree of difference between the first sensing electrode and the second sensing electrode in each sensing electrode group.

[0053] In some examples, the degree of difference in step S300 can be represented numerically. For example, the degree of difference can be represented by numbers 1 to 10, and a preset value (e.g., 5) is set. If the value is less than the preset value, each sensor electrode in the sensor electrode group is marked as good in subsequent steps; if the value is not less than the preset value, each sensor electrode in the sensor electrode group is marked as defective in subsequent steps. In this case, by representing the difference in the test data of the sensor electrodes numerically, it is possible to more quickly and intuitively determine whether the tested sensor electrode is good. For example, the aforementioned sensor electrode group A may include multiple sensor electrodes a, b, c, d, e, f, g...j, and the degree of difference between two tested sensor electrodes in a certain resistance test is defined as X, where X is the difference between the resistance values ​​of the two tested sensor electrodes and a geometric multiple of 0.5 MΩ. For example, if the resistance of the tested sensing electrode a (i.e., the first sensing electrode) is 100 MΩ and the resistance of the tested sensing electrode j (i.e., the second sensing electrode) is 100.5 MΩ, the resistance difference between sensing electrode a and sensing electrode j is X = (100.5 MΩ - 100 MΩ) ÷ 0.5 MΩ. Thus, the resistance difference between sensing electrode a and sensing electrode j is 1. If a preset value of 5 is set according to the test requirements, since 1 < 5, it can be determined that the difference between sensing electrode a and sensing electrode j is small. Therefore, all sensing electrode groups A can be marked as good products.

[0054] In this embodiment, the algorithm can be other mathematical operations, and the present invention is not limited thereto. For example, when the product requirements for the sensing electrode are high, such as when the difference in test data is a number or a decimal, the algorithm can be improved by adding calculus operations in order to improve the test accuracy.

[0055] In other examples, the degree of difference can also be reflected through other identifying symbols and features, such as letters, colors, and sounds.

[0056] In some examples, the testing method may include marking the tested sensing electrodes (step S400).

[0057] In some examples, in step S400, each sensing electrode in the sensing electrode group can be marked based on the degree of difference. As described above, if the degree of difference of the tested sensing electrode group is less than a preset value, then each sensing electrode in the sensing electrode group is marked as good; if the degree of difference of the tested sensing electrode group is not less than the preset value, then each sensing electrode in the sensing electrode group is marked as defective.

[0058] In some examples, preset values ​​can be set according to test standards, customer needs, etc.

[0059] Figure 8 A structural block diagram of a testing system for sensing electrodes according to the present invention is shown.

[0060] like Figure 8 As shown, in some examples, the test system 10 of the present invention may include: a cutting device 101 and a test device 102. The cutting device 101 is configured to cut a substrate to form a plurality of sensing electrode groups including a plurality of sensing electrodes. The test device 102 is configured to perform electrical performance tests on the plurality of sensing electrode groups to obtain a plurality of test data and analyze the degree of difference of the plurality of test data, and mark each sensing electrode in the plurality of sensing electrode groups based on the degree of difference.

[0061] In this configuration, the cutting device 101 can cut and distribute multiple sensing electrodes on the substrate into multiple sensing electrode groups. This facilitates subsequent testing by the testing device 102 of the sensing electrode groups and reduces the inaccuracy problem when testing all sensing electrodes on the entire substrate together. Furthermore, the testing device 102 can test multiple sensing electrode groups and obtain the performance of the sensing electrodes based on the differences in the test data. This reduces the damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, reduces energy waste and subsequent assembly inconvenience caused by a large number of test needles, and ensures that the testing efficiency meets the requirements of mass production.

[0062] In some examples, the cutting method of the cutting device 101 may include, but is not limited to, laser, scalpel, or ultrasonic methods, and the testing content of the testing device 102 may include, but is not limited to, at least one of circuit continuity testing, resistance testing, capacitance testing, or inductance testing. In other words, the cutting device 101 may be a laser device, a scalpel, an ultrasonic device, etc., and the testing device 102 may be a device that tests at least one of circuit continuity testing, resistance testing, capacitance testing, or inductance testing. In some examples, the testing device 102 may also be a functional simulation testing device 102 or a physicochemical performance testing device 102. In this case, the cutting device 101 can cut and distribute the sensing electrodes on the substrate into multiple sensing electrode groups to facilitate subsequent testing of the sensing electrodes to determine their performance. In addition, it can reduce the problem of low accuracy when testing all the sensing electrodes on the entire substrate together. Furthermore, the testing device 102 can obtain various indicators of the electrical performance of the sensing electrodes, and can determine the performance of the sensing electrodes based on these indicators when analyzing differences in the future.

[0063] The testing method and system involved in this invention, by introducing differences and based on the differences between pairs of sensing electrodes, can more accurately test the performance of sensing electrodes compared to general sampling methods. This allows for a more accurate reflection of the maturity of the sensing electrode manufacturing process. Specifically, while general sampling methods can characterize the whole through individuals, the test data obtained is always compared with a specific reference data to judge the overall performance (i.e., the performance of the entire substrate or batch of sensing electrodes), thus having limitations. For example, sensing electrodes that have undergone row-to-column trimming cannot be sampled for testing, or sensing electrodes located in a certain area of ​​the substrate may exhibit... When there are defects in a batch (i.e., when there are abnormalities in the manufacturing process), it is not easy to detect them. However, the testing method and system involved in this invention first divides the sensing electrodes of the entire substrate into multiple sensing electrode groups, and then tests the sensing electrode groups. During the test, only the first and last sensing electrodes are tested for contact. Finally, the degree of difference in the test data of the first and last sensing electrodes is analyzed to determine whether the performance of the tested sensing electrode group meets the requirements. That is, the individual-to-whole testing method is used to test the sensing electrodes, which can efficiently test the sensing electrodes. At the same time, the test data can also be used to judge or reflect the quality of the manufacturing process (such as the aforementioned manufacturing process abnormalities).

[0064] In summary, the testing method and system involved in this invention utilize the characteristic of small differences in the production of sensing electrodes using screen printing technology. First, the sensing electrodes of the entire substrate are divided into multiple sensing electrode groups. Then, the sensing electrode groups are tested. During the test, only the first and last sensing electrodes are subjected to contact testing. Finally, the degree of difference in the test data of the first and last sensing electrodes is analyzed to determine whether the performance of the tested sensing electrode group meets the requirements. That is, the sensing electrodes are tested using a test method that uses the individual to represent the whole.

[0065] Therefore, the testing method and system for sensing electrodes provided by the present invention can reduce the damage to the biosensitive materials on the surface of the sensing electrodes caused by existing testing methods, reduce energy waste and subsequent assembly inconvenience caused by a large number of test needles, and improve testing efficiency to further meet the needs of mass production.

[0066] While the present invention has been specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the invention in any way. Those skilled in the art can make modifications and variations to the present invention as needed without departing from its essential spirit and scope, and all such modifications and variations fall within the protection scope of the present invention.

Claims

1. A method for testing sensing electrodes, wherein the sensing electrodes are obtained by screen printing, and multiple sensing electrodes have the same arrangement pattern and are arranged in an array on a substrate, wherein adjacent rows of sensing electrodes have row gaps and adjacent columns of sensing electrodes have column gaps, characterized in that... The testing method includes: The substrate is cut along the direction of the row gap or the column gap to form a plurality of sensing electrode groups including a plurality of sensing electrodes. The sensing electrode groups are elongated and have a head position with one end of the elongated shape as the head and an end position with the other end of the elongated shape as the end. The sensing electrodes are distributed in the sensing electrode groups in a single row or a single column. Let the sensing electrode located at the first end be the first sensing electrode, and let the sensing electrode located at the last end be the second sensing electrode. Perform electrical performance tests on the first sensing electrode and the second sensing electrode in each of the sensing electrode groups to obtain first test data corresponding to the first sensing electrode and second test data corresponding to the second sensing electrode. The first test data and the second test data are compared to obtain the degree of difference between the first sensing electrode and the second sensing electrode in each of the sensing electrode groups; and Each of the sensing electrodes in the sensing electrode group is labeled based on the degree of difference.

2. The test method according to claim 1, characterized in that, The degree of difference is represented by a numerical value. If the numerical value is less than a preset value, each of the sensing electrodes in the sensing electrode group is marked as a good product. If the numerical value is not less than the preset value, each of the sensing electrodes in the sensing electrode group is marked as a defective product.

3. The test method according to claim 1, characterized in that, Each group of sensing electrodes includes at least three of the aforementioned sensing electrodes.

4. The test method according to claim 1, characterized in that, The electrical performance test includes at least one of the following: circuit continuity test, resistance test, capacitance test, and inductance test.

5. The test method according to claim 1, characterized in that, The cutting method is one of laser cutting, blade cutting, or ultrasonic cutting.

6. The test method according to claim 1, characterized in that, The substrate is cut to obtain 4 to 12 groups of the sensing electrodes.

7. The test method according to claim 1, characterized in that, The number of sensing electrodes in the multiple sensing electrode groups is the same.

8. A testing system for a sensing electrode, wherein the sensing electrode is obtained by screen printing on a substrate, characterized in that, The testing system is used to implement the testing method according to any one of claims 1-7, and the testing system includes a cutting device and a testing device, wherein: The cutting device is configured to cut the substrate to form a plurality of sensing electrode groups including a plurality of the sensing electrodes. The testing device is configured to perform electrical performance tests on the plurality of sensor electrode groups to obtain multiple test data and analyze the degree of difference between the plurality of test data, and to label each of the sensor electrodes in the plurality of sensor electrode groups based on the degree of difference.

9. The testing system according to claim 8, characterized in that, The cutting method of the cutting device is one of laser, knife or ultrasonic, and the testing content of the testing device includes at least one of circuit continuity test, resistance test, capacitance test and inductance test.

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