Touch sensor mutual capacitance testing device

Abstract

The embodiment of the present application provides a mutual capacitance testing device for touch sensor. The device comprises: a roll material conveying mechanism for conveying a roll material to be tested, so as to sequentially convey a plurality of touch sensor units on a continuous base material to a testing station; wherein each touch sensor unit comprises a driving electrode group, a sensing electrode group, a first lead-out terminal group connected with the driving electrode group, and a second lead-out terminal group connected with the sensing electrode group; a probe mechanism arranged at the testing station, comprising a first probe group and a second probe group, respectively used for contacting the first lead-out terminal group and the second lead-out terminal group; and a mutual capacitance testing mechanism electrically connected with the first probe group and the second probe group, respectively, for applying an excitation signal to the driving electrode group through the first probe group, and collecting a response signal of the sensing electrode group through the second probe group. The device can improve the convenience of continuous mutual capacitance testing of the touch sensor in the roll material state to a certain extent, and reduce the missed detection risk caused by only conducting on-off testing.

Description

Technical Field

[0001] This application relates to the field of touch sensor testing technology, specifically to a touch sensor mutual capacitance testing device. Background Technology

[0002] With the development of touch technology, touch sensors are widely used in various electronic devices. Touch sensors typically consist of driving electrodes and sensing electrodes. The performance of a touch sensor can be tested by detecting changes in the mutual capacitance between the driving and sensing electrodes.

[0003] During the production of touch sensors, continuity tests such as open circuit and short circuit can be performed on the electrode circuit of the touch sensor while the touch sensor is in a roll state. However, there is a risk of missing detections in continuity tests.

[0004] To further test the mutual capacitance characteristics between the driving electrode and the sensing electrode, it is usually necessary to cut the continuous substrate into individual touch sensor products and then connect the electrode leads of each touch sensor product to the test equipment for mutual capacitance testing. This makes it difficult to conduct continuous testing while the touch sensor is in a roll state. Utility Model Content

[0005] In view of this, multiple embodiments of this application aim to provide a touch sensor mutual capacitance testing device, which can perform mutual capacitance testing while the touch sensor is in the roll state, and helps to reduce the risk of missed detection caused by only performing continuity testing.

[0006] In a first aspect, one embodiment of this application provides a touch sensor mutual capacitance testing device, comprising: a roll material conveying mechanism for conveying a roll material to be tested, thereby sequentially conveying a plurality of touch sensor units on a continuous substrate to a testing station; wherein the roll material to be tested includes a continuous substrate and a plurality of touch sensor units sequentially arranged along the length direction of the continuous substrate, each touch sensor unit including a driving electrode group, a sensing electrode group, a first lead-out terminal group connected to the driving electrode group, and a second lead-out terminal group connected to the sensing electrode group; a probe mechanism disposed at the testing station, the probe mechanism including a first probe group and a second probe group, the first probe group being used to contact the first lead-out terminal group of the touch sensor unit located at the testing station, and the second probe group being used to contact the second lead-out terminal group of the touch sensor unit located at the testing station; and a mutual capacitance testing mechanism electrically connected to the first probe group and the second probe group respectively, for applying an excitation signal to the driving electrode group through the first probe group and acquiring the response signal of the sensing electrode group through the second probe group.

[0007] Optionally, the roll material to be tested has a first surface and a second surface opposite to each other, the first lead-out end group is disposed on the first surface, and the second lead-out end group is disposed on the second surface; the first probe group is disposed at the test station facing the first surface, and the second probe group is disposed at the test station facing the second surface.

[0008] Optionally, the probe mechanism further includes: a first electric cylinder, which is tractively connected to the first probe group and is used to drive the first probe group to move along the thickness direction of the roll material to be tested, so that the first probe group switches between a state of contacting the first lead-out end group and a state of detachment from the first lead-out end group; and a second electric cylinder, which is tractively connected to the second probe group and is used to drive the second probe group to move along the thickness direction of the roll material to be tested, so that the second probe group switches between a state of contacting the second lead-out end group and a state of detachment from the second lead-out end group.

[0009] Optionally, the touch sensor compatibility testing device further includes: a visual alignment mechanism, including a camera, the camera being disposed at the testing station, the camera's shooting area covering the visual positioning mark on the roll material to be tested located at the testing station; and an alignment adjustment mechanism, which is drivenly connected to at least one of the probe mechanism and the roll material conveying mechanism, for adjusting the position of the first probe group and the second probe group relative to the roll material to be tested.

[0010] Optionally, the alignment adjustment mechanism includes a first translation component, a second translation component, and a rotation component; the movement directions of the first translation component and the second translation component intersect and are both parallel to the plane where the roll to be tested is located at the test station; the rotation component is used to drive at least one of the probe mechanism and the roll to be tested to rotate about an axis extending along the thickness direction of the roll to be tested.

[0011] Optionally, the roll material conveying mechanism includes an unwinding assembly, a winding assembly, a stepping conveyor assembly, and at least one correction assembly; the unwinding assembly and the winding assembly are respectively disposed on both sides of the test station along the conveying direction of the roll material to be tested; the stepping conveyor assembly is used to drive the roll material to be tested to move intermittently; the correction assembly is disposed between the unwinding assembly and the test station, and / or between the test station and the winding assembly, for adjusting the position of the roll material to be tested along its width direction.

[0012] Optionally, the roll material conveying mechanism includes a roll material clamping mechanism; the roll material clamping mechanism includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate being disposed on both sides of the roll material to be tested along the thickness direction; the roll material clamping mechanism further includes a driving mechanism, used to drive the first clamping plate and the second clamping plate to move towards each other to fix the roll material to be tested after the touch sensor unit is conveyed to the test station.

[0013] Optionally, the touch sensor mutual capacitance testing device further includes a rotating assembly for driving the test roll to rotate about an axis extending along the thickness direction of the test roll; the first clamping plate and the second clamping plate are connected to the rotating assembly in a transmission manner.

[0014] Optionally, the capacitance testing mechanism includes a capacitance test board, a first flexible circuit board, and a second flexible circuit board; the capacitance test board includes multiple driving electrode channels and multiple sensing electrode channels; the first probe group is connected to the multiple driving electrode channels through the first flexible circuit board, and the second probe group is connected to the multiple sensing electrode channels through the second flexible circuit board.

[0015] Optionally, the touch sensor mutual capacitance testing device further includes: a computer, which is communicatively connected to the mutual capacitance testing mechanism, for processing the acquired response signal; and a defect marking mechanism, which is communicatively connected to the computer, for forming defect marks on the touch sensor unit or its corresponding continuous substrate area.

[0016] As can be seen from the above embodiments, in this application, multiple embodiments use a roll conveying mechanism to sequentially transport multiple touch sensor units on a continuous substrate to the testing station. A first probe group and a second probe group respectively contact the first lead-out group and the second lead-out group, allowing the mutual capacitance testing mechanism to apply an excitation signal to the driving electrode group and collect the response signal from the sensing electrode group. This enables the touch sensor units to undergo mutual capacitance testing sequentially while remaining in a roll state. Since the collected response signal reflects the mutual capacitance characteristics between the driving electrode group and the sensing electrode group, it is beneficial for identifying touch sensor units where the electrode circuit remains basically conductive but the mutual capacitance characteristics have become abnormal, thereby reducing the risk of missed detections that may occur when only continuity testing is used. Simultaneously, this application eliminates the need to first cut the continuous substrate into individual touch sensor products before performing mutual capacitance testing on each one, reducing the need for cutting the continuous substrate and establishing test connections individually, thus improving the convenience of performing mutual capacitance testing in a roll state. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a touch sensor mutual capacitance testing device provided in one embodiment of this application.

[0018] Figure 2 This is a partial structural schematic diagram of a touch sensor mutual capacitance testing device provided in one embodiment of this application.

[0019] Figure 3 A schematic diagram of the alignment principle of a visual alignment mechanism provided for one embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: mutual capacitance testing device 100, test roll 102, touch sensor unit 104, drive electrode group 106, sensing electrode group 108, first lead-out end group 110, second lead-out end group 112, testing station 114, first probe group 116, second probe group 118, mutual capacitance testing mechanism 120, first electric cylinder 122, second electric cylinder 124, vision alignment mechanism 126, rotating assembly 128, rotating spindle 130, unwinding assembly 132, winding assembly 134, stepping conveyor assembly 136, correction assembly 138, first clamping plate 140, second clamping plate 142, drive mechanism 144, capacitance test plate 146, computer 148, defect marking mechanism 150. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] In the description of the embodiments of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] With the development of touch technology, touch sensors are widely used in various electronic devices. Touch sensors typically consist of a driving electrode group and a sensing electrode group. By applying an excitation signal to the driving electrode group and collecting the response signal generated by the sensing electrode group, the mutual capacitance information between the driving electrode group and the sensing electrode group can be obtained, which can be used to test the performance of the touch sensor.

[0024] In the production process of touch sensors, multiple touch sensor units can be sequentially arranged on a continuous substrate along its length to form a roll of material to be tested. Each touch sensor unit may include a driving electrode group, a sensing electrode group, a first lead-out terminal group connected to the driving electrode group, and a second lead-out terminal group connected to the sensing electrode group.

[0025] In some related technologies, continuity tests, such as open-circuit and short-circuit tests, can be performed on the electrode circuits of the touch sensor unit while the touch sensor is in a rolled-up state. However, continuity tests are mainly used to determine whether the electrode circuits have been disconnected or short-circuited. Anomalies that have not yet caused complete disconnection or short-circuiting of the electrode circuits but have already affected the mutual capacitance characteristics between the drive electrode group and the sensing electrode group may be difficult to effectively identify. For example, anomalies such as localized etching abnormalities, residual conductive material, or localized mesh breaks in a metal mesh touch sensor may cause changes in mutual capacitance characteristics, while the electrode circuits may still maintain basic conductivity, thus potentially leading to missed detections.

[0026] On the other hand, to further test the mutual capacitance characteristics between the driving electrode assembly and the sensing electrode assembly, in some related technologies, mutual capacitance testing typically requires first cutting a continuous substrate into individual touch sensor products, and then connecting the electrode leads of each touch sensor product to the testing equipment to perform mutual capacitance testing on each touch sensor product. This necessitates repeatedly cutting the continuous substrate and connecting each individual touch sensor product to the testing equipment, making continuous testing difficult while the touch sensors are in a roll state.

[0027] Based on this, this application provides a touch sensor mutual capacitance testing device. The touch sensor mutual capacitance testing device includes a roll conveying mechanism, a probe mechanism, and a mutual capacitance testing mechanism. The roll conveying mechanism is used to convey the roll to be tested, so as to sequentially transport multiple touch sensor units on a continuous substrate to the testing station. The probe mechanism is disposed at the testing station and includes a first probe group and a second probe group. When a touch sensor unit on the roll to be tested is conveyed to the testing station, the first probe group can contact the first lead-out terminal group of the touch sensor unit, and the second probe group can contact the second lead-out terminal group of the touch sensor unit, thereby establishing a test connection between the touch sensor unit and the mutual capacitance testing mechanism.

[0028] The mutual capacitance testing mechanism is electrically connected to the first probe group and the second probe group, respectively. With the first probe group and the second probe group in contact with the first lead-out group and the second lead-out group, respectively, the mutual capacitance testing mechanism can apply an excitation signal to the driving electrode group through the first probe group and collect the response signal of the sensing electrode group through the second probe group, thereby completing the mutual capacitance test of the touch sensor unit located at the testing station. After completing the test of the current touch sensor unit, the roll material conveying mechanism can continue to convey the roll material to be tested, allowing the next touch sensor unit to enter the testing station for testing.

[0029] In this way, multiple touch sensor units on a continuous substrate are sequentially transported to the testing station via a roll-to-roll conveyor mechanism. Test connections are established between the first probe group and the second probe group, respectively, with the first lead-out group and the second lead-out group. This allows multiple touch sensor units to undergo mutual capacitance testing sequentially while remaining in a roll-to-roll state. Compared to conducting open-circuit and short-circuit continuity tests only in the roll-to-roll state, this application can apply an excitation signal to the driving electrode group and collect the response signal of the sensing electrode group in the roll-to-roll state. This provides information reflecting the mutual capacitance characteristics between the driving electrode group and the sensing electrode group, which is beneficial for identifying touch sensor units where the electrode circuit remains basically conductive but the mutual capacitance characteristics have become abnormal, reducing the risk of missed detections that may arise from using only continuity tests. Simultaneously, it eliminates the need to first cut the continuous substrate into individual touch sensor products and then test them one by one, reducing related cutting and individual test connection operations, improving the convenience of touch sensor mutual capacitance testing, and enabling mutual capacitance testing to be performed earlier in the roll-to-roll stage.

[0030] Please see Figure 1 and Figure 2 This application provides a touch sensor mutual capacitance testing device 100, which can be used to sequentially perform mutual capacitance tests on multiple touch sensor units 104 on a roll of material 102 under test. The mutual capacitance test can be understood as a testing method that applies an excitation signal to the driving electrode of the touch sensor unit 104 and collects the response signal generated by the sensing electrode to obtain information related to the mutual capacitance between the driving electrode and the sensing electrode. The touch sensor mutual capacitance testing device 100 includes a roll conveying mechanism, a probe mechanism, and a mutual capacitance testing mechanism 120.

[0031] Please continue reading. Figure 1 and Figure 2 The roll of material to be tested 102 includes a continuous substrate and a plurality of touch sensor units 104 arranged sequentially along the length of the continuous substrate. The continuous substrate can be used to carry the plurality of touch sensor units 104, so that the plurality of touch sensor units 104 remain connected to each other in the roll state before testing. That is, during the mutual capacitance test, it is not necessary to pre-cut each touch sensor unit 104 and its corresponding part with the continuous substrate, but to allow the plurality of touch sensor units 104 to move together with the continuous substrate along a preset conveying path.

[0032] The roll conveying mechanism is used to transport the roll of material 102 to be tested, so as to sequentially transport multiple touch sensor units 104 on the continuous substrate to the testing station 114. The testing station 114 can be understood as the position or area where the roll of material 102 is used to establish a test connection and perform mutual capacitance testing on one of the touch sensor units 104 during the transport process. Figure 1As shown, the roll material 102 to be tested can pass through the test station 114 along the conveying path formed by the roll material conveying mechanism. When one of the touch sensor units 104 enters the test station 114, the touch sensor unit 104 can be tested; in some embodiments, after the current touch sensor unit 104 completes the test, the roll material 102 to be tested can continue to be conveyed so that the next touch sensor unit 104 adjacent along the length direction of the continuous substrate can enter the test station 114. In this way, multiple touch sensor units 104 on the roll material 102 to be tested can participate in the test sequentially according to their arrangement order on the continuous substrate.

[0033] Please refer to the following: Figure 3 Each touch sensor unit 104 includes a driving electrode group 106, a sensing electrode group 108, a first lead group 110 connected to the driving electrode group 106, and a second lead group 112 connected to the sensing electrode group 108. The driving electrode group 106 may include one or more driving electrodes for receiving excitation signals, and the sensing electrode group 108 may include one or more sensing electrodes for generating or outputting response signals. The driving electrode group 106 and the sensing electrode group 108 may be mutually insulated and can form a mutual capacitive coupling relationship. When an excitation signal is applied to the driving electrode group 106, the sensing electrode group 108 can generate a corresponding response signal based on the mutual capacitive coupling between the driving electrode group 106 and the sensing electrode group 108. Therefore, the transmission of test signals between the driving electrode group 106 and the sensing electrode group 108 does not need to be based on direct electrical conduction between them.

[0034] The first lead-out group 110 forms an electrical connection interface between the drive electrode group 106 and the external test structure. Specifically, each first lead-out terminal in the first lead-out group 110 can be connected to a corresponding drive electrode in the drive electrode group 106. The second lead-out group 112 forms an electrical connection interface between the sensing electrode group 108 and the external test structure. Specifically, each second lead-out terminal in the second lead-out group 112 can be connected to a corresponding sensing electrode in the sensing electrode group 108. In this way, the excitation signal required for testing can be input to the drive electrode group 106 through the first lead-out group 110, and the response signal generated by the sensing electrode group 108 can be output through the second lead-out group 112.

[0035] Please see Figure 2 and Figure 3The probe mechanism is located at the test station 114 and includes a first probe group 116 and a second probe group 118. The first probe group 116 is used to contact the first lead-out terminal group 110 of the touch sensor unit 104 located at the test station 114, and the second probe group 118 is used to contact the second lead-out terminal group 112 of the touch sensor unit 104 located at the test station 114. The first probe group 116 and the second probe group 118 may each include multiple test probes, each test probe being correspondingly positioned with a specific lead-out terminal, enabling the first probe group 116 to establish electrical contact with multiple first leads in the first lead-out terminal group 110, and enabling the second probe group 118 to establish electrical contact with multiple second leads in the second lead-out terminal group 112.

[0036] It is understandable that the probe mechanism forms a temporary test contact with the touch sensor unit 104 located at the test station 114 through the first probe group 116 and the second probe group 118, so that the touch sensor unit 104 can establish a test connection with the back-end test structure while still being disposed on the continuous substrate, without having to cut off the touch sensor unit 104 and its corresponding part to the continuous substrate together in order to form a test connection.

[0037] In some embodiments, the first lead-out group 110 and the second lead-out group 112 can be respectively disposed on different surfaces of the roll material 102 to be tested, so as to be suitable for touch sensor units 104 where the driving electrode group 106 and the sensing electrode group 108 are respectively disposed on different film layers or different surfaces. In other embodiments, the first lead-out group 110 and the second lead-out group 112 can also be disposed on the same side of the roll material 102 to be tested, and the corresponding first probe group 116 and second probe group 118 can be disposed according to the actual positions of the first lead-out group 110 and the second lead-out group 112. The specific surface positions of the first lead-out group 110 and the second lead-out group 112 do not change the basic mutual capacitance test principle of inputting excitation signals to the driving electrode group 106 through the first lead-out group 110 and acquiring response signals of the sensing electrode group 108 through the second lead-out group 112.

[0038] Please continue reading. Figure 2 The mutual capacitance testing mechanism 120 is electrically connected to the first probe group 116 and the second probe group 118, respectively. The mutual capacitance testing mechanism 120 can be understood as a test structure capable of generating the excitation signal required for mutual capacitance testing and capable of acquiring the response signal generated by the sensing electrode group 108 in response to the excitation signal.

[0039] When the first probe group 116 is in contact with the first lead-out group 110, the mutual capacitance testing mechanism 120 can apply an excitation signal to the driving electrode group 106 through the first probe group 116 and the first lead-out group 110. Thus, an excitation signal transmission path can be formed between the mutual capacitance testing mechanism 120, the first probe group 116, the first lead-out group 110 and the driving electrode group 106.

[0040] When the second probe group 118 is in contact with the second lead group 112, the sensing electrode group 108 generates a response signal in response to the excitation signal received by the driving electrode group 106. The mutual capacitance testing mechanism 120 can acquire this response signal through the second lead group 112 and the second probe group 118. Thus, a response signal acquisition path can be formed between the sensing electrode group 108, the second lead group 112, the second probe group 118, and the mutual capacitance testing mechanism 120.

[0041] During specific testing, the roll conveying mechanism can transport a touch sensor unit 104 on the roll 102 to the testing station 114. The first probe group 116 makes contact with the first lead-out terminal group 110 of the touch sensor unit 104, and the second probe group 118 makes contact with the second lead-out terminal group 112, establishing a test connection between the touch sensor unit 104 and the mutual capacitance testing mechanism 120. The mutual capacitance testing mechanism 120 applies an excitation signal to the driving electrode group 106 through the first probe group 116 and collects the response signal generated by the sensing electrode group 108 through the second probe group 118, thereby realizing the mutual capacitance test of the touch sensor unit 104.

[0042] In some embodiments, after the current touch sensor unit 104 completes the mutual capacitance test, the contact between the first probe group 116 and the first lead-out group 110, and between the second probe group 118 and the second lead-out group 112, can be released, allowing the roll material 102 under test to continue moving. The roll material conveying mechanism can then transport the next touch sensor unit 104 to the testing station 114 and re-establish test contact between the first probe group 116, the second probe group 118, and the corresponding first lead-out group 110 and second lead-out group 112. By repeating the above process, the mutual capacitance test of multiple touch sensor units 104 on a continuous substrate can be completed sequentially.

[0043] In this way, multiple touch sensor units 104 on the continuous substrate are sequentially transported to the test station 114 by the roll conveying mechanism. The first probe group 116 and the second probe group 118 respectively contact the first lead-out group 110 and the second lead-out group 112, so that the mutual capacitance test mechanism 120 applies an excitation signal to the driving electrode group 106 and collects the response signal of the sensing electrode group 108. This allows multiple touch sensor units 104 to be tested sequentially while maintaining the roll state, without having to cut the continuous substrate into individual touch sensor products and then test them one by one. This reduces the related cutting and establishing test connections one by one, and improves the convenience of touch sensor mutual capacitance testing.

[0044] Please see Figure 1 and Figure 2 In some embodiments, the roll material 102 to be tested has a first surface and a second surface opposite to each other, a first lead-out end group 110 is disposed on the first surface, and a second lead-out end group 112 is disposed on the second surface; a first probe group 116 is disposed on the test station 114 facing the first surface, and a second probe group 118 is disposed on the test station 114 facing the second surface.

[0045] Specifically, the first surface and the second surface can be understood as two opposing surfaces of the roll material 102 under test along its thickness direction. The first lead-out end group 110 is used to lead the driving electrode group in the touch sensor unit 104 to the first surface, so that the first probe group 116 can contact the first lead-out end group 110 from the side of the first surface; the second lead-out end group 112 is used to lead the sensing electrode group in the touch sensor unit 104 to the second surface, so that the second probe group 118 can contact the second lead-out end group 112 from the side of the second surface. Thus, the first lead-out end group 110 and the second lead-out end group 112 do not need to be centrally located on the same surface of the roll material 102 under test; test access positions can be formed using the two opposing surfaces of the roll material 102 under test.

[0046] like Figure 1As shown, when the roll material 102 to be tested passes through the testing station 114, the first probe group 116 and the second probe group 118 are respectively set to correspond to the two opposite surfaces of the roll material 102 to be tested. Since the first surface and the second surface are set opposite to each other, the first probe group 116 and the second probe group 118 are also set from different sides of the roll material 102 to the corresponding surfaces. For example, when the first surface is the downward-facing surface of the roll material 102 in the illustrated state, and the second surface is the upward-facing surface opposite to it, the first probe group 116 can be set from the lower side of the roll material 102 to correspond to the first lead-out end group 110, and the second probe group 118 can be set from the upper side of the roll material 102 to correspond to the second lead-out end group 112. Of course, the first surface and the second surface are used to distinguish the two opposite surfaces of the roll material 102 to be tested, and are not limited to corresponding to a fixed upper or lower surface.

[0047] When a touch sensor unit 104 enters the test station 114 along with the roll of material 102 under test, the first probe group 116 can contact the first lead-out end group 110 from the side where the first surface is located, and the second probe group 118 can contact the second lead-out end group 112 from the side where the second surface is located. Thus, for touch sensor units 104 whose driving electrode group and sensing electrode group are respectively led out through different surfaces of the roll of material 102 under test, corresponding test contacts can be established by the first probe group 116 and the second probe group 118 set on both sides of the roll of material 102 under test, without having to switch the first lead-out end group 110 and the second lead-out end group 112 located on different surfaces to the same side before testing. This allows the mutual capacitance testing device 100 to be applicable to touch sensor units 104 whose electrode leads are distributed on different surfaces of the roll of material 102 under test.

[0048] Please see Figure 2 In some embodiments, the probe mechanism further includes a first electric cylinder 122 and a second electric cylinder 124. The first electric cylinder 122 is driven to the first probe group 116 and is used to drive the first probe group 116 to move along the thickness direction of the roll material 102 to be tested, so that the first probe group 116 switches between a state of contacting the first lead-out end group 110 and a state of disengaging from the first lead-out end group 110; the second electric cylinder 124 is driven to the second probe group 118 and is used to drive the second probe group 118 to move along the thickness direction of the roll material 102 to be tested, so that the second probe group 118 switches between a state of contacting the second lead-out end group 112 and a state of disengaging from the second lead-out end group 112.

[0049] Specifically, the first probe group 116 is positioned facing the first surface of the roll material 102 to be tested, and the first electric cylinder 122 can drive the first probe group 116 to move toward or away from the roll material 102 to be tested. When the first electric cylinder 122 drives the first probe group 116 to move toward the roll material 102 to be tested, the first probe group 116 can gradually approach the first lead-out end group 110 and form contact with the first lead-out end group 110, thereby putting the first probe group 116 in a state of contact with the first lead-out end group 110. When the first electric cylinder 122 drives the first probe group 116 to move in the opposite direction, the first probe group 116 can move away from the roll material 102 to be tested and separate from the first lead-out end group 110, thereby switching to a state of being detached from the first lead-out end group 110.

[0050] Accordingly, the second probe group 118 is disposed facing the second surface of the roll material 102 to be tested, and the second electric cylinder 124 can drive the second probe group 118 to move toward or away from the roll material 102 along the thickness direction of the roll material 102 to be tested. When the second electric cylinder 124 drives the second probe group 118 to move toward the roll material 102 to be tested, the second probe group 118 can form contact with the second lead-out end group 112; when the second electric cylinder 124 drives the second probe group 118 to move away from the roll material 102 to be tested, the second probe group 118 can separate from the second lead-out end group 112.

[0051] For example, after the touch sensor unit 104 located on the roll material 102 under test is conveyed to the test position, the first electric cylinder 122 and the second electric cylinder 124 can be controlled to drive the first probe group 116 and the second probe group 118 toward the roll material 102 under test, respectively. This causes the first probe group 116 to contact the first lead-out end group 110 and the second probe group 118 to contact the second lead-out end group 112, thereby forming the test contact state required for the mutual capacitance test. After the current touch sensor unit 104 is tested, the first electric cylinder 122 and the second electric cylinder 124 can be controlled to drive the first probe group 116 and the second probe group 118 away from the roll material 102 under test, respectively, so that the two sets of probes are disengaged from their corresponding lead-out end groups. In this way, a test contact can be established between the probe mechanism and the touch sensor unit 104 during the mutual capacitance test, and the test contact can be released after the test is completed so that the roll material 102 under test can continue to be conveyed.

[0052] Please see Figures 1 to 3 In some embodiments, the touch sensor compatibility testing apparatus 100 further includes a visual alignment mechanism 126 and an alignment adjustment mechanism. The visual alignment mechanism 126 includes a camera disposed at the test station 114, the camera's shooting area covering the visual positioning marks on the roll material 102 to be tested located at the test station 114; the alignment adjustment mechanism is drivenly connected to at least one of the probe mechanism and the roll material conveying mechanism, and is used to adjust the position of the first probe group 116 and the second probe group 118 relative to the roll material 102 to be tested.

[0053] Specifically, the roll material 102 under test may experience positional shifts during transport, causing a deviation in the position of the touch sensor unit 104 located at the testing station 114 relative to the first probe group 116 and the second probe group 118. Since both the first lead-out end group 110 and the second lead-out end group 112 may include multiple spaced-apart leads, a shift in the positional correspondence between the touch sensor unit 104 and the first probe group 116 and the second probe group 118 may result in the probes failing to accurately contact the corresponding leads. Therefore, a visual positioning mark set on the roll material 102 under test can be used as a positional reference for the touch sensor unit 104, and the actual position of the visual positioning mark can be obtained through the visual alignment mechanism 126.

[0054] Please see Figure 3 In some embodiments, visual positioning marks may be disposed on the touch sensor unit 104. The visual positioning marks may be cross-shaped marks, circular marks, or other shapes recognizable by the camera. The visual alignment mechanism 126 may further include a light source and an image processing unit. The light source can be used to illuminate the camera's shooting area, the camera can acquire images of the visual positioning marks, and the image processing unit can determine the positional deviation of the current touch sensor unit 104 relative to a preset test position based on the actual position of the visual positioning marks in the acquired image.

[0055] After obtaining the positional deviation between the test roll 102 and the probe mechanism, the positions of the first probe group 116 and the second probe group 118 relative to the test roll 102 can be changed by the alignment adjustment mechanism. For example, in an embodiment where the alignment adjustment mechanism and the probe mechanism are connected by a transmission link, the alignment adjustment mechanism can drive the probe mechanism to move relative to the test roll 102, so that the first probe group 116 gradually aligns with the first lead-out end group 110, and the second probe group 118 gradually aligns with the second lead-out end group 112. Thus, the relative position between the probe mechanism and the test roll 102 can be adjusted before the first probe group 116 and the second probe group 118 form test contact with the corresponding lead-out end groups.

[0056] In other embodiments, the alignment adjustment mechanism can also be drivenly connected to the roll conveying mechanism, thereby adjusting the relative position between the first probe group 116 and the second probe group 118 and their corresponding lead-out end groups by changing the position of the roll 102 to be tested relative to the probe mechanism. In still other embodiments, the alignment adjustment mechanism can be drivenly connected to both the probe mechanism and the roll conveying mechanism, respectively, thereby achieving relative alignment between the probe mechanism and the roll 102 to be tested by adjusting the position of at least one of them. This embodiment does not further limit the specific transmission structure used between the alignment adjustment mechanism and the roll conveying mechanism.

[0057] Thus, by acquiring visual positioning marks on the roll material 102 to be tested through the visual alignment mechanism 126, and adjusting the relative positions between the first probe group 116, the second probe group 118 and the roll material 102 to be tested according to the positions represented by the visual positioning marks, the first probe group 116 and the second probe group 118 can more accurately correspond to the first lead-out end group 110 and the second lead-out end group 112 before forming test contact, reducing the possibility of misalignment between the probes and the corresponding lead-out ends due to the positional offset of the roll material 102 to be tested.

[0058] Please see Figure 2 In some embodiments, the alignment adjustment mechanism includes a first translation component, a second translation component, and a rotation component 128. The first and second translation components move in intersecting directions and are both parallel to the plane where the roll material 102 to be tested is located at the test station; the rotation component 128 is used to drive at least one of the probe mechanism and the roll material 102 to be tested to rotate about an axis extending along the thickness direction of the roll material 102. In this way, the alignment adjustment mechanism can change the relative positions between the first probe group 116, the second probe group 118, and the roll material 102 to be tested through translational and rotational movements, respectively, to compensate for the positional deviation identified by the visual alignment mechanism 126.

[0059] Specifically, the first translation component and the second translation component provide two translation adjustment directions within the plane of the roll material 102 to be tested. Since the two movement directions intersect, the planar position deviation between the touch sensor unit 104 at the test station and the first probe group 116 and the second probe group 118 can be compensated by adjusting the position in both directions. For example, in some embodiments, the movement direction of the first translation component can correspond to the width direction of the roll material 102 to be tested, and the movement direction of the second translation component can correspond to the conveying direction of the roll material 102 to be tested. When the visual alignment mechanism 126 determines that the touch sensor unit 104 has a positional deviation along the width direction of the roll material 102 to be tested, the relative position between the probe mechanism and the roll material 102 to be tested along that direction can be adjusted by the first translation component; when the touch sensor unit 104 has a positional deviation along the conveying direction, the corresponding position can be adjusted by the second translation component. It should be noted that the moving directions of the first translation component and the second translation component only need to be intersecting and both parallel to the plane where the roll material 102 to be tested is located, and it is not required that the two moving directions must be perpendicular to each other.

[0060] In some cases, the touch sensor unit 104 on the test roll 102 may experience not only in-plane positional shift but also a small-angle deflection relative to the first probe group 116 and the second probe group 118. In this situation, positional adjustment using only the first and second translation components may not be sufficient to align the arrangement of the first probe group 116 and the second probe group 118 with the corresponding first lead-out end group 110 and second lead-out end group 112. Therefore, at least one of the probe mechanism and the test roll 102 can be further angled using the rotation component 128.

[0061] Specifically, the rotation axis of the rotating assembly 128 extends along the thickness direction of the roll material 102 to be tested; that is, the rotation axis can be substantially perpendicular to the plane where the roll material 102 to be tested is located at the testing station. When the rotating assembly 128 drives at least one of the probe mechanism and the roll material 102 to be tested to rotate around this axis, it can change the angular relationship between the first probe group 116 and the second probe group 118 and the touch sensor unit 104 in the plane where the roll material 102 to be tested is located, thereby compensating for the angular deviation of the touch sensor unit 104.

[0062] like Figure 2 As shown, in some embodiments, the rotating component 128 may include a rotating spindle 130, which can drive the corresponding structure holding the test roll 102 to rotate, i.e., drive the test roll 102 to rotate. After the visual alignment mechanism 126 determines that there is an angular deviation in the touch sensor unit 104, it can rotate the rotating spindle 130 by a corresponding angle according to the angular deviation, thereby driving the test roll 102 to adjust its angle, so that there is a good angular correspondence between the first probe group 116 and the first lead-out end group 110, and between the second probe group 118 and the second lead-out end group 112. In the embodiment where the rotating component 128 drives the probe mechanism to rotate, the angular position of the probe mechanism relative to the test roll 102 can be changed by the rotating component 128 to achieve the same relative angle adjustment. This embodiment does not further limit its specific mechanical transmission structure.

[0063] For example, when the vision alignment mechanism 126 identifies that the touch sensor unit 104 located at the test station simultaneously exhibits positional deviations along the width direction of the roll material 102 under test, positional deviations along the conveying direction of the roll material 102 under test, and angular deviations around the thickness direction of the roll material 102 under test, corresponding adjustments can be made through the first translation component, the second translation component, and the rotation component 128, respectively. Through the coordination of these different movement directions, the positional and angular deviations of the touch sensor unit 104 within the plane of the roll material 102 under test can be compensated, thereby ensuring that the first probe group 116 and the second probe group 118 obtain a more accurate relative position before contacting their respective lead-out end groups.

[0064] Please see Figure 1 In some embodiments, the roll conveying mechanism includes an unwinding assembly 132, a winding assembly 134, a stepping conveyor assembly 136, and at least one correction assembly 138. The unwinding assembly 132 and the winding assembly 134 are respectively disposed on both sides of the test station 114 along the conveying direction of the roll 102 to be tested; the stepping conveyor assembly 136 is used to drive the roll 102 to be tested to move intermittently; the correction assembly 138 is disposed between the unwinding assembly 132 and the test station 114, and / or between the test station 114 and the winding assembly 134, and is used to adjust the position of the roll 102 to be tested along its width direction.

[0065] Specifically, the unwinding assembly 132 can be used to release the test roll 102, and the rewinding assembly 134 can be used to collect the test roll 102 that has passed through the test station 114 and completed the test. The unwinding assembly 132 and the rewinding assembly 134 are located on different sides of the test station 114 along the conveying direction of the test roll 102, so that the test roll 102 can be conveyed from the side where the unwinding assembly 132 is located to the test station 114, and continue to be conveyed to the side where the rewinding assembly 134 is located after passing through the test station 114. Thus, a roll-to-roll conveying path can be formed through the test station 114. A first probe group 116, a second probe group 118, and a vision alignment mechanism 126 can be set at the test station 114 to perform corresponding test operations when the test roll 102 stops at the test station 114.

[0066] The stepping conveyor assembly 136 can be used to control the feeding and stopping states of the roll 102 under test, enabling multiple touch sensor units continuously arranged on the roll 102 to sequentially enter the testing station 114. Specifically, the stepping conveyor assembly 136 can intermittently move the roll 102 under test according to the arrangement spacing between adjacent touch sensor units. For example, when one of the touch sensor units under test is conveyed to the testing station 114, the stepping conveyor assembly 136 can stop moving the roll 102 under test, keeping the touch sensor unit at the testing station 114 for corresponding testing; after the current touch sensor unit completes the test, the stepping conveyor assembly 136 can move the roll 102 under test again, allowing the next touch sensor unit to enter the testing station 114. By repeating the above feeding and stopping process, multiple touch sensor units on a continuous substrate can be tested sequentially.

[0067] In some embodiments, multiple guide rollers may be provided on the roll conveying path to guide the roll 102 to be tested as it moves from the unwinding assembly 132 to the rewinding assembly 134, so that the roll 102 passes through the test station 114 along the preset conveying path. The roll conveying mechanism may also be provided with a tension control mechanism to control the tension of the roll 102 during the conveying process. This embodiment does not further limit the number of guide rollers, the specific structure of the tension control mechanism, or the magnitude of the tension.

[0068] During the process of conveying the test roll 102 from the unwinding assembly 132 to the rewinding assembly 134, since the test roll 102 is a flexible roll, there may be lateral positional changes along the width direction of the test roll 102. Based on this, a correction assembly 138 can be set to adjust the position of the test roll 102 along the width direction before and / or after it arrives at the test station 114.

[0069] For example, such as Figure 1 As shown, a correction component 138 can be provided between the unwinding assembly 132 and the testing station 114. This correction component 138 can adjust the lateral position of the roll 102 before it enters the testing station 114, ensuring that the testing area on the roll 102 enters the testing station 114 more accurately. In some embodiments, the correction component 138 can also be provided between the testing station 114 and the winding assembly 134 to adjust the lateral position of the roll 102 after it has passed the testing station 114. In other embodiments, correction components 138 can be provided between the unwinding assembly 132 and the testing station 114, and between the testing station 114 and the winding assembly 134, respectively, to adjust the lateral position of the roll 102 from the upstream and downstream sides of the testing station 114.

[0070] In some embodiments, the web-correcting component 138 may employ an EPC roll edge position control mechanism. The web-correcting component 138 can detect the edge position of the roll 102 to be tested and adjust the position of the roll 102 along its width direction based on the detected edge position. This reduces the lateral offset of the roll 102 during transport, allowing the touch sensor units on the continuous substrate to enter the testing station 114 more stably and sequentially.

[0071] In some embodiments, a dust-adhesion mechanism may also be provided on the conveying path of the test roll 102. The dust-adhesion mechanism may include a dust-adhesion roller and a dust-adhesion roll paper, used to remove dust or foreign objects from the surface of the test roll 102 during the conveying process, so as to reduce the impact of dust or foreign objects on subsequent visual recognition or test contact.

[0072] Thus, by forming a conveying path for the test roll 102 on both sides of the test station 114 through the unwinding assembly 132 and the rewinding assembly 134, the test roll 102 is moved intermittently by the stepping conveying assembly 136, and the position of the test roll 102 along the width direction is adjusted by at least one correction assembly 138. This allows multiple touch sensor units on the test roll 102 to enter the test station 114 sequentially and relatively stably, providing feeding conditions for testing each touch sensor unit in continuous roll state.

[0073] Please see Figure 2 In some embodiments, the roll conveying mechanism includes a roll clamping mechanism. The roll clamping mechanism includes a first clamping plate 140, a second clamping plate 142, and a driving mechanism 144. The first clamping plate 140 and the second clamping plate 142 are respectively disposed on both sides of the roll 102 to be tested along the thickness direction. The driving mechanism 144 is used to drive the first clamping plate 140 and the second clamping plate 142 to move towards each other after the touch sensor unit 104 is conveyed to the testing station, so as to fix the roll 102 to be tested.

[0074] Specifically, the test roll 102 is a flexible structure capable of moving along the roll conveying path. When the touch sensor unit 104 on the test roll 102 is conveyed to the testing station, if the test roll 102 remains in a freely movable state, its position or local shape may change during subsequent testing. Therefore, the first clamping plate 140 and the second clamping plate 142 can be used to fix the test roll 102 from both sides along its thickness direction, ensuring that the test roll 102 at the testing station remains relatively stable during testing.

[0075] The first clamping plate 140 and the second clamping plate 142 are respectively disposed on both sides of the roll material 102 to be tested along the thickness direction of the roll material 102. This can be understood as the roll material 102 to be tested being at least partially located between the first clamping plate 140 and the second clamping plate 142. The driving mechanism 144 forms a driving relationship with the first clamping plate 140 and the second clamping plate 142, enabling the first clamping plate 140 and the second clamping plate 142 to move closer to each other. For example, when the thickness direction of the roll material 102 to be tested is... Figure 2 When the installation state shown corresponds approximately to the vertical direction, the first clamping plate 140 and the second clamping plate 142 can be located on the upper and lower sides of the roll material 102 to be tested, respectively, and move towards each other from both sides of the roll material 102 under the action of the driving mechanism 144. It should be noted that the first clamping plate 140 and the second clamping plate 142 are only used to distinguish the two clamping plates located on different sides of the thickness direction of the roll material 102 to be tested, and do not limit the first clamping plate 140 to be located on a fixed upper or lower side.

[0076] After the touch sensor unit 104 enters the test station along with the roll of material 102 to be tested, the drive mechanism 144 can drive the first clamping plate 140 and the second clamping plate 142 to move towards each other, so that the first clamping plate 140 and the second clamping plate 142 gradually approach the roll of material 102 to be tested, and clamp and fix the roll of material 102 to be tested from both sides in the thickness direction of the roll of material 102. At this time, the position change of the roll of material 102 to be tested during the test can be restricted, so that the touch sensor unit 104 is kept relatively stably in the test station, thereby providing a relatively stable roll state for establishing test contact between the first probe group 116 and the second probe group 118 and the corresponding lead-out end.

[0077] In some embodiments, after the current touch sensor unit 104 completes the test, the first clamping plate 140 and the second clamping plate 142 can be released from fixing the roll material 102 to be tested, so that the roll material 102 to be tested is back in a state where it can continue to be fed, so that the next touch sensor unit 104 can be fed to the testing station. Thus, it is possible to switch between the feeding state and the testing and fixing state.

[0078] Thus, by placing the first clamping plate 140 and the second clamping plate 142 on both sides of the roll material 102 to be tested along the thickness direction, and driving the first clamping plate 140 and the second clamping plate 142 to move towards each other through the driving mechanism 144, the touch sensor unit 104 can be fixed from both sides of the roll material 102 to be tested after it arrives at the test station, reducing the possibility of positional changes of the roll material 102 to be tested during the test, and keeping the roll material 102 to be tested in a relatively stable state during the test.

[0079] Please see Figure 2 In some embodiments, the touch sensor mutual capacitance testing device 100 further includes a rotating assembly 128, which is used to drive the test roll 102 to rotate about an axis extending along the thickness direction of the test roll 102; the first clamping plate 140 and the second clamping plate 142 are connected to the rotating assembly 128 in a transmission manner.

[0080] Specifically, after the touch sensor unit 104 is delivered to the testing station, the drive mechanism 144 can drive the first clamping plate 140 and the second clamping plate 142 to move towards each other, so that the first clamping plate 140 and the second clamping plate 142 fix the test roll 102 from both sides along the thickness direction. When the test roll 102 is fixed by the first clamping plate 140 and the second clamping plate 142, since the first clamping plate 140 and the second clamping plate 142 are both connected to the rotating assembly 128, when the rotating assembly 128 is activated, the rotation can be transmitted to the clamped test roll 102 through the first clamping plate 140 and the second clamping plate 142, thereby driving the test roll 102 to rotate.

[0081] In some embodiments, the rotating assembly 128 may include a rotating spindle 130. When the rotating assembly 128 rotates the roll material 102 to be tested, its axis of rotation extends along the thickness direction of the roll material 102 to be tested; that is, the axis of rotation may be substantially perpendicular to the plane where the roll material 102 to be tested is located at the testing station. Therefore, while the first clamping plate 140 and the second clamping plate 142 are kept fixed, the angular position of the touch sensor unit 104 located at the testing station in the plane where the roll material 102 to be tested is located can be changed by driving the first clamping plate 140 and the second clamping plate 142 to rotate through the rotating assembly 128.

[0082] For example, when the touch sensor unit 104 enters the testing station along with the roll of material 102 to be tested, the touch sensor unit 104 may have a certain angular deviation relative to the first probe group 116 and the second probe group 118, causing the arrangement direction of the first lead-out end group 110 and the second lead-out end group 112 to deviate from the arrangement direction of the corresponding probe group. In this case, the roll of material 102 to be tested can be fixed first by the first clamping plate 140 and the second clamping plate 142, and then the rotating assembly 128 can be used to drive the first clamping plate 140 and the second clamping plate 142, as well as the roll of material 102 to be tested fixed by them, to rotate around the above-mentioned axis, thereby changing the angular position of the touch sensor unit 104 relative to the first probe group 116 and the second probe group 118, so that the first lead-out end group 110 and the second lead-out end group 112 have a better angular correspondence with the corresponding probe group.

[0083] Thus, by fixing the roll material 102 to be tested using the first clamping plate 140 and the second clamping plate 142, and by connecting the first clamping plate 140 and the second clamping plate 142 to the rotating assembly 128, the angle of the roll material 102 to be tested can be adjusted by the rotating assembly 128 while maintaining the roll material 102 in a fixed state. This allows for adjustment of the angular relationship between the touch sensor unit 104 and the probe mechanism located at the testing station. This embodiment does not further limit the specific transmission structure used between the rotating assembly 128 and the first clamping plate 140 and the second clamping plate 142.

[0084] Please see Figure 2 In some embodiments, the capacitance testing mechanism 120 includes a capacitance testing board 146, a first flexible circuit board, and a second flexible circuit board. The capacitance testing board 146 includes multiple driving electrode channels and multiple sensing electrode channels; a first probe group 116 is connected to the multiple driving electrode channels through the first flexible circuit board, and a second probe group 118 is connected to the multiple sensing electrode channels through the second flexible circuit board.

[0085] Specifically, the capacitance test board 146 can be used to form multiple excitation channels and multiple response acquisition channels required for mutual capacitance testing. Multiple driving electrode channels are used to provide excitation signals to corresponding driving electrodes in the touch sensor unit 104, and multiple sensing electrode channels are used to acquire response signals generated by corresponding sensing electrodes. Since the touch sensor unit 104 may include multiple driving electrodes and multiple sensing electrodes, by setting multiple driving electrode channels and multiple sensing electrode channels on the capacitance test board 146, test channels corresponding to the multiple driving electrodes and multiple sensing electrodes can be established respectively.

[0086] The first flexible circuit board is connected between the first probe group 116 and the multiple drive electrode channels of the capacitance test board 146. Thus, after the first probe group 116 makes contact with the first lead-out group 110, an excitation signal transmission path can be formed, consisting of the drive electrode channels of the capacitance test board 146, the first flexible circuit board, the first probe group 116, and the first lead-out group 110, so that the corresponding excitation signal can be transmitted to the drive electrode of the touch sensor unit 104.

[0087] Accordingly, the second flexible circuit board is connected between the second probe group 118 and the multiple sensing electrode channels of the capacitance test board 146. After the second probe group 118 and the second lead group 112 make contact, a response signal acquisition path can be formed, consisting of the sensing electrode, the second lead group 112, the second probe group 118, the second flexible circuit board, and the sensing electrode channels of the capacitance test board 146, so that the response signal generated by the corresponding sensing electrode can be acquired by the capacitance test board 146. In this way, the first flexible circuit board and the second flexible circuit board correspond to the excitation side and the response acquisition side, respectively, and form corresponding electrical connections between the first probe group 116, the second probe group 118, and the capacitance test board 146.

[0088] In some embodiments, the capacitance test board 146 can sequentially select different driving electrode channels from a plurality of driving electrode channels. When one driving electrode channel is selected, the capacitance test board 146 can apply an excitation signal to the corresponding driving electrode through the driving electrode channel, the first flexible circuit board, and the first probe group 116, and acquire the response signals of multiple sensing electrodes through multiple sensing electrode channels. After completing the response acquisition corresponding to the current driving electrode, the next driving electrode channel can be selected to obtain mutual capacitance detection information between different driving electrodes and different sensing electrodes.

[0089] For example, when the touch sensor unit 104 includes m driving electrodes and n sensing electrodes, the capacitance test board 146 can sequentially apply excitation signals through the driving electrode channels corresponding to the m driving electrodes, and collect response signals through the sensing electrode channels corresponding to the n sensing electrodes when each driving electrode is excited, thereby obtaining m×n sets of mutual capacitance detection data corresponding to different combinations of driving electrodes and sensing electrodes. Here, m represents the number of driving electrodes, and n represents the number of sensing electrodes. This embodiment does not further limit the specific values ​​of m and n.

[0090] Thus, by connecting the first probe group 116 to multiple driving electrode channels of the capacitance test board 146 via the first flexible circuit board, and connecting the second probe group 118 to multiple sensing electrode channels via the second flexible circuit board, multiple channel excitation transmission paths and multiple channel response acquisition paths can be established respectively, enabling the capacitance test board 146 to perform mutual capacitance tests on multiple driving electrodes and multiple sensing electrodes in the touch sensor unit 104.

[0091] Please see Figure 2 In some embodiments, the touch sensor mutual capacitance testing apparatus 100 further includes a computer 148 and a defect marking mechanism 150. The computer 148 is communicatively connected to the mutual capacitance testing mechanism 120 and is used to process the response signals collected by the mutual capacitance testing mechanism 120; the defect marking mechanism 150 is communicatively connected to the computer 148 and is used to form defect marks on the touch sensor unit 104 or its corresponding continuous substrate area.

[0092] Specifically, after the mutual capacitance testing mechanism 120 completes the acquisition of the response signal from the touch sensor unit 104 located at the testing station, it can send the acquired response signal to the computer 148. The computer 148 can process the response signal to obtain mutual capacitance detection data that reflects the mutual capacitance characteristics between the driving electrode group and the sensing electrode group. In some embodiments, the computer 148 can be an industrial computer (IPC), and can also be configured with a display and a corresponding data processing module to process, judge, or display the mutual capacitance detection data.

[0093] In some embodiments, for the mutual capacitance detection data corresponding to different combinations of driving electrodes and sensing electrodes in the touch sensor unit 104, the computer 148 can arrange multiple mutual capacitance detection data according to the correspondence between the driving electrodes and sensing electrodes to form a two-dimensional mutual capacitance data matrix. Thus, the detection results corresponding to different combinations of driving electrodes and sensing electrodes can be determined based on the corresponding positions in the two-dimensional mutual capacitance data matrix. The specific process for acquiring multiple mutual capacitance detection data can be referred to the foregoing embodiments and will not be repeated here.

[0094] The computer 148 can also compare the mutual capacitance detection data with a preset data range or benchmark data to determine whether the current touch sensor unit 104 meets the test requirements. For example, when all mutual capacitance detection data meet the corresponding preset requirements, the current touch sensor unit 104 can be determined to be qualified; when at least some of the mutual capacitance detection data exceed the corresponding preset range, the current touch sensor unit 104 can be determined to be unqualified. Thus, the test judgment result corresponding to the current touch sensor unit 104 can be obtained based on the processing result of the response signal. This embodiment does not further limit the specific values ​​of the preset data range or benchmark data.

[0095] The defect marking mechanism 150 is communicatively connected to the computer 148, enabling the computer 148 to use the test judgment results to control the defect marking mechanism 150. For example, when the computer 148 determines that the current touch sensor unit 104 does not meet the test requirements, it can send corresponding information to the defect marking mechanism 150, causing the defect marking mechanism 150 to form a defect mark on the current touch sensor unit 104. Thus, during subsequent feeding, cutting, or sorting of the roll material 102 under test, the corresponding unqualified touch sensor unit 104 can be identified based on the defect mark.

[0096] In other embodiments, the defect mark may not be formed directly on the touch sensor unit 104, but rather on a continuous substrate area corresponding to the touch sensor unit 104. For example, the defect mark may be formed at a continuous substrate position that has a preset correspondence with the defective touch sensor unit 104 along the conveying direction of the roll of material 102 to be tested, so that the defect mark can characterize the test result of the corresponding touch sensor unit 104.

[0097] In some embodiments, the defect mark can be an ink dot, character, barcode, or hole, or other mark that can be identified by subsequent processes. Different forms of defect marks can be used to establish a correspondence between test results and specific touch sensor units 104 on the test roll 102 which is continuously provided with multiple touch sensor units 104. This embodiment does not further limit the specific structure of the defect mark mechanism 150 for forming the above-mentioned defect marks.

[0098] Thus, by processing the response signal collected by the mutual capacitance testing mechanism 120 through the computer 148, and forming a defect mark on the unqualified touch sensor unit 104 or its corresponding continuous substrate area through the defect marking mechanism 150 which is connected to the computer 148, the mutual capacitance test result can be correlated with the specific touch sensor unit 104 on the test roll 102, which facilitates the subsequent identification, cutting, sorting or quality traceability of the unqualified touch sensor unit 104.

[0099] It is understood that the specific examples in this document are only intended to help those skilled in the art better understand the embodiments of this application, and are not intended to limit the scope of the invention.

[0100] It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0101] It is understood that the various implementation methods described in this application can be implemented individually or in combination, and the implementation methods in this application are not limited in this respect.

[0102] Unless otherwise stated, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0103] The above description is merely a specific embodiment of this application, but the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. A touch sensor mutual capacitance testing device, characterized in that, include: A roll material conveying mechanism is used to convey roll material to be tested, so as to sequentially convey multiple touch sensor units on a continuous substrate to the testing station; wherein, the roll material to be tested includes a continuous substrate and multiple touch sensor units arranged sequentially along the length direction of the continuous substrate, each touch sensor unit including a driving electrode group, a sensing electrode group, a first lead-out terminal group connected to the driving electrode group, and a second lead-out terminal group connected to the sensing electrode group; A probe mechanism is disposed at the test station. The probe mechanism includes a first probe group and a second probe group. The first probe group is used to contact the first lead-out end group of the touch sensor unit located at the test station, and the second probe group is used to contact the second lead-out end group of the touch sensor unit located at the test station. The mutual capacitance testing mechanism is electrically connected to the first probe group and the second probe group respectively, and is used to apply an excitation signal to the driving electrode group through the first probe group and to collect the response signal of the sensing electrode group through the second probe group.

2. The apparatus according to claim 1, characterized in that, The roll material to be tested has a first surface and a second surface opposite to each other, the first lead-out end is disposed on the first surface, and the second lead-out end is disposed on the second surface; The first probe group is disposed at the test station facing the first surface, and the second probe group is disposed at the test station facing the second surface.

3. The apparatus according to claim 2, characterized in that, The probe mechanism further includes: The first electric cylinder is connected to the first probe group for driving the first probe group to move along the thickness direction of the roll material to be tested, so that the first probe group switches between the state of contacting the first lead-out end group and the state of detaching from the first lead-out end group. The second electric cylinder is connected to the second probe group for driving the second probe group to move along the thickness direction of the roll material to be tested, so that the second probe group switches between the state of contacting the second lead-out end group and the state of detaching from the second lead-out end group.

4. The apparatus according to claim 1, characterized in that, The touch sensor mutual compatibility testing device also includes: A visual alignment mechanism includes a camera, which is positioned at the test station and the camera's shooting area covers the visual positioning mark on the roll material to be tested located at the test station. The alignment adjustment mechanism is drivenly connected to at least one of the probe mechanism and the roll material conveying mechanism, and is used to adjust the position of the first probe group and the second probe group relative to the roll material to be tested.

5. The apparatus according to claim 4, characterized in that, The alignment adjustment mechanism includes a first translation component, a second translation component, and a rotation component; The first translation component and the second translation component move in opposite directions and are both parallel to the plane of the roll material to be tested located at the test station. The rotating assembly is used to drive at least one of the probe mechanism and the roll material to be tested to rotate about an axis extending along the thickness direction of the roll material to be tested.

6. The apparatus according to claim 1, characterized in that, The roll conveying mechanism includes an unwinding assembly, a winding assembly, a stepping conveyor assembly, and at least one deviation correction assembly; The unwinding assembly and the winding assembly are respectively disposed on both sides of the test station along the conveying direction of the roll to be tested; The stepping conveyor assembly is used to drive the test roll material to move intermittently. The correction component is disposed between the unwinding component and the testing station, and / or between the testing station and the winding component, for adjusting the position of the roll material to be tested along its width direction.

7. The apparatus according to claim 1, characterized in that, The roll conveying mechanism includes a roll clamping mechanism; The coil clamping mechanism includes a first clamping plate and a second clamping plate, which are respectively disposed on both sides of the coil to be tested along the thickness direction. The roll clamping mechanism further includes a driving mechanism, which drives the first clamping plate and the second clamping plate to move toward each other to fix the roll to be tested after the touch sensor unit is transported to the test station.

8. The apparatus according to claim 7, characterized in that, The touch sensor mutual capacitance testing device further includes a rotating component for driving the test roll to rotate around an axis extending along the thickness direction of the test roll; the first clamping plate and the second clamping plate are connected to the rotating component in a transmission manner.

9. The apparatus according to claim 1, characterized in that, The mutual capacitance testing mechanism includes a capacitance test board, a first flexible circuit board, and a second flexible circuit board. The capacitance test board includes multiple driving electrode channels and multiple sensing electrode channels; The first probe group is connected to the plurality of driving electrode channels through the first flexible circuit board, and the second probe group is connected to the plurality of sensing electrode channels through the second flexible circuit board.

10. The apparatus according to claim 1, characterized in that, The touch sensor mutual compatibility testing device also includes: A computer, communicatively connected to the mutual capacitance testing mechanism, is used to process the acquired response signals; A defect marking mechanism, communicatively connected to the computer, is used to form defect marks on the touch sensor unit or its corresponding continuous substrate area.

Images