CN113702803A - Detection device and detection method applied to various touch products - Google Patents
Detection device and detection method applied to various touch products Download PDFInfo
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- 238000012360 testing method Methods 0.000 claims abstract description 50
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
Abstract
The invention relates to the field of touch product detection, and discloses a detection device and a detection method applied to various touch products, wherein the detection method comprises the following steps: carrying the touch IC chip on a false-pressure switching FPC board or a universal switching PCB board; connecting the test main board with the output end of the universal adapter PCB; inserting the connecting end of the universal switching PCB and the connecting end of the false voltage switching FPC board; pressing the access end of the false pressure switching FPC board and a touch product to be tested; and carrying out power-on operation, and carrying out touch detection on the touch product to be detected. The detection method has the characteristics of simpler structure, easier operation, higher compatibility, higher repeated utilization rate, higher utilization rate, lower cost and more convenient maintenance.
Description
Technical Field
The invention relates to the field of touch product detection, in particular to a detection device and a detection method applied to various touch products.
Background
As an intelligent human-computer interface input device, a touch screen has been widely used, and is developed most rapidly especially in the field of consumer electronics (e.g., smart phones, tablet computers, smart watches, etc.). Meanwhile, with the progress of the technology, people have higher and higher requirements on the functional experience of the touch module. In the manufacturing process of the touch module, especially in the CELL stage (i.e. the box manufacturing process stage), a product with poor touch needs to be screened in advance to improve the detection yield of the bonding section of the touch module, so that a damaged or unqualified touch module needs to be screened out as much as possible by a detection method before the module is packaged or bound so as to save the packaging cost and the repair cost. Therefore, in order to ensure the shipment quality of the touch screen and effectively improve the detection efficiency of the touch function, it is necessary to develop a detection device and a detection method which have high compatibility, high reuse rate, easy operation, high detection efficiency, low cost and convenient maintenance.
At present, technicians in the touch screen industry generally use a probe detection method to test the touch function of a touch product, and the device for installing the probe has a complex structure, high cost and high equipment maintenance cost. In addition, the probe detection method can only detect one touch module at a time, and the one-to-one mode detection is low in efficiency and not beneficial to batch production operation in production. If a plurality of touch modules are to be detected simultaneously, a plurality of high-precision testing devices and connecting jigs with complex structures are to be configured, which not only increases the cost of the testing devices and the connecting jigs, but also increases the operation difficulty and the testing time.
Therefore, in order to improve the detection efficiency and reduce the cost, chinese patent CN 111736733a discloses a detection method for an embedded touch display product, which sequentially connects a pseudo-pressure transfer FPC board, a COF connection board, an FPC, and a test motherboard, so that the detection method can simultaneously detect a plurality of touch modules, thereby improving the detection efficiency. Compared with a probe detection method, the detection device adopted by the detection method has the advantages of simpler structure, lower cost and higher detection efficiency, but still has certain improvement space.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the detection device and the detection method which have higher compatibility, higher repeated utilization rate, simpler structure, easier operation, lower cost and more convenient maintenance and are applied to various touch products.
The purpose of the invention is realized by the following technical scheme:
one embodiment (one measurement and one mode)
Referring to fig. 1 and 2, a detection device 10 applied to a plurality of touch products includes a touch IC chip 130, a dummy voltage adapting FPC board 110, a universal adapting PCB board 120, and a test main board 140, wherein the touch IC chip 130 is mounted on the dummy voltage adapting FPC board 110 or the universal adapting PCB board 120, the test main board 140 is configured to be electrically connected to a controller 150, the test main board 140 is connected to an output end of the universal adapting PCB board 120, an input end 121 of the universal adapting PCB board 120 is inserted into an output end 113 of the dummy voltage adapting FPC board 110, and an input end of the dummy voltage adapting FPC board 110 is configured to be pressed against a touch product 20 to be detected.
A detection method applied to various touch products comprises the following steps: (1) the touch IC chip 130 is mounted on the dummy adaptor FPC board 110 or the universal adaptor PCB board 120. (2) Loading test software into a controller 150, wherein the test software is matched with the touch IC chip 130, so that the controller 150 is electrically connected with the test mainboard 140; the controller 150 is one of a computer, a smart phone, a tablet computer, and a smart watch. (3) The test main board 140 is connected to the connection terminal of the universal adapter PCB 120. (4) The input end 121 of the universal adapter PCB 120 is inserted into the output end 113 of the pseudo-pressure adapter FPC 110. (5) The access end of the false pressure switching FPC board 110 is in pressure joint with the touch control product 20 to be tested; the touch product 20 to be tested is a touch module or a touch module integrated by a touch module and a display module. (6) And performing power-on operation, and performing touch detection on the touch product 20 to be detected.
The test process or principle of the detection method is as follows: the controller 150 sends a test command to the test main board 140, the test main board 140 transmits the test command to the touch IC chip 130, the touch IC chip 130 scans and detects a touch channel of the touch product 20 to be tested by the pseudo-pressure switching FPC 110 after receiving the test command, and feeds back detected electrical data to the touch IC chip 130, the touch IC chip 130 performs data conversion on the electrical data to obtain a data signal, the data signal is fed back to the controller 150 through the test main board 140, and the controller 150 performs data processing on the data signal and displays a processing result. The detected electrical data acquisition comprises data change acquisition of a resistance value and a capacitance value, and whether open circuit or short circuit exists or not, and the problems of bad values such as Noise value, UC value (uniformity) and the like are judged according to the resistance value and capacitance value change of each touch module to be detected. The detected sample is judged and analyzed according to the detected electrical data, the electrical data detected by the current testing software mainly comprise open-circuit short-circuit testing data, NOISE testing data, uniformity testing data, DSP testing data and the like, and the collected electrical data may have differences according to different types of touch modules to be tested.
Taking a touch product as an example of an inconel self-capacitance structure, please refer to fig. 8, a touch channel is formed by self-capacitance electrodes and respective lead-out wires, the tail ends of the lead-out wires are touch pins, each self-capacitance electrode is connected with a first crimping pin of the access end of the false-pressing switching FPC board 110 through the respective touch pin and is connected with the touch IC chip 130, when a human body does not touch the screen, the capacitance borne by each self-capacitance electrode is a fixed Raw data value (the Raw data value is generally a numerical value of comprehensive resistance and capacitance characteristics, and is mainly related to the fixed characteristics of the dielectric constant, the shape and the space of a touch channel, the resistance and the like of a touch module), and the touch IC chip 130 stores the fixed Raw data value into Flash (i.e., a Flash memory card) as a Reference value (i.e., a Reference value); when a human body touches, the capacitance born by each self-capacitance electrode is a fixed Raw data value and is superposed with the capacitance of the human body to obtain a changed Raw data value, and the difference between the changed Raw data value and the Reference value is called a buffer value (namely a difference value); when a finger touches, is disturbed by the outside, or is affected by a problem in the resistance capacitance of the touch channel, the touch IC chip 130 can determine the node position and the variation of the touch detection by detecting the capacitance variation of each self-capacitance electrode, so as to obtain a required data value. If a certain touch channel or a certain node is broken, the detected Raw data value becomes close to or the maximum value, and the detected Raw data value is determined by different touch IC chips 130.
Further, before the operation of crimping the access end of the false pressure switching FPC board 110 and the touch product 20 to be tested, the first crimping pin 111 of the access end of the false pressure switching FPC board 110 is matched with the touch pin of the touch product 20 to be tested, and if the two are not matched, the false pressure switching FPC board 110 needs to be replaced.
Further, the replacing operation is specifically: when the universal adapter PCB 120 is loaded with the touch IC chip 130, the universal adapter PCB is replaced with a pseudo-pressure adapter FPC 110 matched with the touch module to be tested; when the false pressure switching FPC board 110 carries the touch IC chip 130, the false pressure switching FPC board 110 and the touch IC chip 130 jointly form an FPC composite board, and then the FPC composite board matched with the touch module to be tested is replaced with the FPC composite board. In order to retain the touch IC chip 130 therein, the first press-connection pin 111 of the pseudo-press switching FPC board 110 of the FPC combo board may be subjected to matching processing to obtain a matched FPC combo board. In both of the above-mentioned operations, only the pseudo-pressing relay FPC board 110 is changed, and other components (such as the universal relay PCB 120, the touch IC chip 130, the test main board 140, the controller 150, etc.) are retained, so that the recycling rate of other components can be increased, and thus the recycling rate of the detection apparatus 10 can be increased. In addition, if the dummy-pressure transfer FPC board 110 is damaged due to long-term operation, it is necessary to replace the dummy-pressure transfer FPC board 110, and therefore, it is important to improve the convenience of the replacement method of the dummy-pressure transfer FPC board 110.
Further, in order to improve the convenience of replacing the pseudo-pressure switching FPC board 110, the incoming end 121 of the general-purpose switching PCB 120 is a connector, the connector is soldered on the general-purpose switching PCB 120, and the outgoing end 113 of the pseudo-pressure switching FPC board 110 is plugged into the connector. Therefore, the connector enables the false pressing switching FPC board 110 and the universal switching PCB board 120 to be in a detachable connection relation, namely, the false pressing switching FPC board 110 can be installed and detached on the universal switching PCB board 120 through simple insertion or extraction, so that the replacement operation of the false pressing switching FPC board 110 is very simple, easy and quick, and the detection method can be matched with various touch products 20 to be detected, and is high in compatibility, high in utilization rate, easy to operate, low in cost and convenient to maintain.
Further, the detection method can be used for detecting the touch function of the touch product 20 to be detected, and can also be used for detecting the display function of the touch product 20 (i.e. touch module) to be detected. For example, referring to fig. 3 and fig. 4, when the touch product 20 to be tested is a touch module, and the access end of the pseudo-pressure switching FPC board 110 is pressed against the touch product 20 to be tested, the second pressing pins 112 of the access end of the pseudo-pressure switching FPC board 110 are also pressed against the display pins of the touch product 20 to be tested, so as to perform display detection on the touch product 20 to be tested. Namely, the detection method is characterized in that two crimping pins are arranged on one false-pressing switching FPC board 110 and respectively crimp the display module and the touch module of the touch module, so that the display function and the touch function of the touch module can be detected simultaneously, mutual interference between the display module and the touch module is avoided, and the detection efficiency and the detection accuracy can be improved.
Further, referring to fig. 6 and 7, in order to realize the automatic press connection and disconnection between the false pressure switching FPC board 110 and the touch product 20 to be tested, the detection apparatus 10 further includes a press connection clamp 160, and the operation of press connection between the access end of the false pressure switching FPC board 110 and the touch product 20 to be tested is performed by the press connection clamp 160.
Further, the crimping jig 160 includes a camera assembly 162, an XY moving stage 163, a lifting moving stage 164, and a crimping assembly 165; the XY moving platform 163 comprises a fixed platform 1631 and an XY moving component 1632, the fixed platform 1631 is used for bearing the touch product 20 to be tested, and the XY moving component 1632 is connected with the fixed platform 1631 and used for driving the fixed platform 1631 to move transversely or longitudinally; the lifting moving platform 164 comprises a carrying platform 1641 and a lifting mover 1642, the carrying platform 1641 is disposed on one side of the fixed platform 1631, the carrying platform 1641 is used for carrying a circuit board, and the lifting mover 1642 is connected to the carrying platform 1641 and is used for driving the carrying platform 1641 to perform lifting displacement; the lift mover 1642 is, for example, an air cylinder. The camera assembly 162 is arranged above the fixed platform 1631; the crimping assembly 165 includes a lifting driver 1652 and a lower press head 1651, the lower press head 1651 is arranged above the fixed platform 1631, and the lifting driver 1652 is connected with the lower press head 1651 and is used for driving the lower press head 1651 to move up and down. The lift driver 1652 is, for example, an air cylinder.
The operation of pressing and connecting the access end of the false pressure switching FPC board 110 and the touch product 20 to be tested specifically is: (1) the touch product 20 to be tested is placed on the fixed platform 1631, and the false pressure switching FPC board 110 is placed on the bearing platform 1641. (2) The fixed platform 1631 is driven by the XY moving platform 163 to perform a horizontal or longitudinal displacement, and the lifting mover 1642 drives the carrying platform 1641 to perform a lifting displacement, so that the touch pin of the touch product 20 to be tested is aligned with the first crimping pin 111 of the access end of the dummy-pressing transfer FPC board 110. (3) Image information of the position of the touch pin of the touch product 20 to be tested and the position of the first crimping pin 111 at the access end of the false-pressure switching FPC board 110 is acquired through a camera component 162 and transmitted to a display 161, and the image information is amplified and displayed by the display 161; the alignment condition of the two can be seen through the display screen, so that accurate alignment is realized. (4) A lifting driver 1652 drives the lower pressure head 1651 to move up and down, so that the first crimping pin 111 of the access end of the false pressure switching FPC board 110 is in crimping connection with or disconnected from the touch control pin of the touch control product 20 to be tested; the automatic compression joint and the automatic disconnection between the false pressure switching FPC board 110 and the touch product 20 to be detected are realized, the manual operation is replaced by an automatic mode, and the detection efficiency of the detection method can be greatly improved.
For another example, the XY moving assembly 1632 includes a transmission structure of a transverse and longitudinal adjusting handle and a screw-nut member, and the screw-nut member is driven by rotating the adjusting handle to linearly displace in the transverse or longitudinal direction. For another example, the XY moving platform 163 further includes a vacuum pumping component, which is connected to the suction hole formed in the fixing platform 1631 to firmly suck and fix the touch product 20 to be tested, so as to prevent the touch product from displacing during the testing process, thereby improving the testing accuracy. For another example, the fixed platform 1631 is covered with an anti-static film layer on the surface for bearing the touch product 20 to be tested, so that static electricity can be prevented from interfering with the test result of the detection method in the test process.
As another example, camera component 162 includes light 1621, support bracket 1622, violently indulges and moves subassembly 1623 and camera 1624, light 1621 orientation fixed platform 1631 sets up, support bracket 1622 locates fixed platform 1631's top, and display 161 locates on the support bracket 1622, camera component 162 with display 161 electricity is connected, camera 1624 passes through violently indulge and move subassembly 1623 and connect on the support bracket 1622, violently indulge and move subassembly 1623 and be used for the drive camera 1624 is horizontal or longitudinal displacement, for example, violently indulge and move subassembly 1623 for slide rail slider transmission structure or screw nut revolution mechanic. Thus, the camera 1624 can be supported by the transverse and longitudinal movement component 1623 to move left and right and back and forth along the support bracket 1622, thereby enlarging the shooting area.
For another example, the crimping assembly 165 further includes a fixing bracket 1653 and a longitudinal moving assembly 1654, the lifting driver 1652 is disposed on the fixing bracket 1653, and the longitudinal moving assembly 1654 is connected to the fixing bracket 1653 and is configured to drive the fixing bracket 1653 to perform longitudinal displacement. For example, the longitudinal moving component 1654 is a sliding rail and sliding block transmission structure, and is configured to drive the lower press head 1651 to align or cover the touch pin of the touch product 20 to be tested and the alignment position of the first press connection pin 111 of the access end of the false-pressure switching FPC board 110, so as to improve the press connection accuracy. For another example, the lower press head 1651 includes a fixing block 1651a and a silica gel strip 1651b, the fixing block 1651a is connected to the lifting driver 1652, a fixing groove is formed at the bottom of the fixing block 1651a, the silica gel strip 1651b is connected to the fixing groove, an outermost end of the silica gel strip 1651b protrudes out of an outermost end of the fixing block 1651a, so that the silica gel strip 1651b is in contact with the touch product 20 to be tested and the false pressure transfer FPC board 110 during pressing, abrasion of the touch product and the false pressure transfer FPC board is reduced, the silica gel strip 1651b is detachably connected to the fixing block 1651a, and if the silica gel strip 1651b is abraded due to work, the silica gel strip 1651b can be replaced.
Compared with the detection method disclosed by the Chinese patent CN 111736733A, the transfer structure of the detection method removes COF connecting plates with higher cost and middle transfer FPC, and is changed into a universal transfer PCB with lower cost, so that the structure of the transfer structure is simpler and the cost is lower; moreover, the connection mode between the false-pressing switching FPC board and the universal switching PCB board is changed into a mode of plugging through a connector, so that the false-pressing switching FPC board is detachable, the replacement operation is very simple, easy and quick, the detection method can be matched with various touch products, the operation is easier, the compatibility is higher, the utilization rate is higher, the cost is lower, and the maintenance is more convenient.
Another embodiment (one-test N mode, N ≧ 2)
Referring to fig. 5, a detection apparatus 10 applied to a plurality of touch products includes a plurality of touch IC chips 130, a plurality of test main boards 140, a dummy pressure transfer FPC board 110 and a universal transfer PCB board 120, wherein the plurality of touch IC chips 130 are mounted on the dummy pressure transfer FPC board 110 or the universal transfer PCB board 120, the plurality of test main boards 140 are electrically connected to a controller 150, the universal transfer PCB board 120 is provided with a plurality of outlets, the plurality of test main boards 140 are respectively connected to the plurality of outlets of the universal transfer PCB board 120 in a one-to-one correspondence manner, an inlet 121 of the universal transfer PCB board 120 is inserted into the outlet 113 of the dummy pressure transfer FPC board 110, the dummy pressure transfer FPC board 110 is provided with a plurality of inlets, and the plurality of inlets of dummy pressure transfer FPC boards 110 are used for being respectively connected to the touch products 20 to be detected in a one-to-one correspondence manner.
A detection method applied to various touch products comprises the following steps: (1) the plurality of touch IC chips 130 are mounted on the dummy adaptor FPC board 110 or the universal adaptor PCB board 120. (2) The test software is installed in the controller 150, and the plurality of test boards 140 are electrically connected to the controller 150. (3) The test boards 140 are connected to the output terminals of the universal adapter PCB 120 in a one-to-one correspondence. (4) The input end 121 of the universal adapter PCB 120 is inserted into the output end 113 of the pseudo-pressure adapter FPC 110. (5) And correspondingly crimping the plurality of access ends of the false pressure switching FPC board 110 and the plurality of touch products 20 to be tested one by one. (6) And performing power-on operation, and performing touch detection on the multiple touch products 20 to be detected.
The testing process or principle of the one-test-N mode testing method is basically the same as that of the one-test-one mode testing method, and is not described in detail. The test interface of the test software can monitor the test process of a plurality of touch products to be tested at the same time, but requires that the plurality of touch IC chips 130 have the same type and the plurality of touch products to be tested have the same type.
Therefore, the detection method can be used for simultaneously detecting a plurality of touch products 20 to be detected, so that the detection efficiency is greatly improved, and because only one of the false pressing switching FPC board 110, the universal switching PCB board 120 and the controller 150 is needed to be configured, the utilization rate of the false pressing switching FPC board 110 and the universal switching PCB board 120 can be improved, and the utilization rate of the controller 150 is improved; the detection method also greatly reduces the production cost on the basis of ensuring the detection yield, efficiency and accuracy.
Specifically, the operation of mounting the plurality of touch IC chips 130 on the pseudo-pressure relay FPC board 110 or the universal relay PCB board 120 includes: the plurality of touch IC chips 130 are all mounted on the dummy transfer FPC board 110, or the plurality of touch IC chips 130 are all mounted on the common transfer PCB board 120, or one of the plurality of touch IC chips 130 is mounted on the dummy transfer FPC board 110, and the other is mounted on the common transfer PCB board 120.
Similarly, the detection method also adopts the pressing clamp 160 to realize the automatic pressing and breaking between the false pressing switching FPC board 110 and the touch product 20 to be detected.
Compared with the prior art, the invention has at least the following advantages:
the switching structure of the detection device and the detection method of the invention removes COF connecting plates with higher cost and middle switching FPC, and changes the COF connecting plates and the middle switching FPC into a universal switching PCB with lower cost, so that the structure of the switching structure is simpler and the cost is lower; moreover, the connection mode between the false-pressing switching FPC board and the universal switching PCB board is changed into a mode of plugging through a connector, so that the false-pressing switching FPC board is detachable, the replacement operation is very simple, easy and quick, the detection method can be matched with various touch products, the operation is easier, the compatibility is higher, the utilization rate is higher, the cost is lower, and the maintenance is more convenient. In addition, the detection method can realize a one-test N (N is more than or equal to 2) mode, at least two connecting ends are arranged on the false-pressure switching FPC board and are respectively in pressure connection with the display module and the touch module, the display module and the touch module of the touch module can be simultaneously subjected to display detection and touch detection, mutual interference between the display module and the touch module can be avoided, the defects caused by the interference of the display module to the touch module can be effectively checked, and therefore the detection efficiency and the detection accuracy can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a detection apparatus used in the detection method of embodiment 1.
Fig. 2 is a schematic structural view of a detection apparatus used in the detection method of embodiment 1.
Fig. 3 is a schematic structural diagram of a detection apparatus used in the detection method of embodiment 2.
Fig. 4 is a schematic structural diagram of a detection apparatus used in the detection method of embodiment 2.
Fig. 5 is a schematic structural diagram of a detection apparatus used in the detection method of embodiment 3.
Fig. 6 is a schematic structural diagram of a detection apparatus used in the detection method of embodiment 4.
Fig. 7 is a schematic structural diagram of a detection apparatus used in the detection method of embodiment 4.
Fig. 8 is a schematic structural diagram of an inconel self-contained structure.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1: one measurement and one mode
A detection method applied to various touch products comprises the following steps:
s111, the touch IC chip 130 is mounted on the dummy relay FPC board 110 (as shown in fig. 2) or the touch IC chip 130 is mounted on the universal relay PCB board 120 (as shown in fig. 1).
S112, loading test software into the controller 150, where the test software is matched with the touch IC chip 130, so that the controller 150 is electrically connected to the test motherboard 140; the controller 150 is one of a computer, a smart phone, a tablet computer, and a smart watch.
S113, connecting the test motherboard 140 with the output end of the universal adapter PCB 120.
S114, the input end 121 of the universal adapter PCB 120 is inserted into the output end 113 of the pseudo-pressure adapter FPC 110. The incoming end 121 of the universal adapter PCB 120 is a connector, the connector is soldered on the universal adapter PCB 120, and the outgoing end 113 of the pseudo-pressure adapter FPC 110 is plugged into the connector.
S115, crimping the first crimping pin 111 at the access end of the false-pressure switching FPC board 110 with the touch pin of the touch product 20 to be tested; before that, the first crimping pin 111 of the access end of the false-pressure switching FPC board 110 is also matched with the touch pin of the touch product 20 to be tested, and if the two are not matched, the false-pressure switching FPC board 110 needs to be replaced. The touch product 20 to be tested is a touch module or a touch module integrated by a touch module and a display module.
And S116, carrying out power-on operation, and carrying out touch detection on the touch product 20 to be detected.
Example 2: one measurement and one mode
The difference from embodiment 1 is that, referring to fig. 3 and fig. 4, the touch product 20 to be tested is a touch module, the access end of the pseudo-pressure switching FPC board 110 is provided with a first press-connection pin 111 and a second press-connection pin 112, and when the access end of the pseudo-pressure switching FPC board 110 is press-connected to the touch product 20 to be tested, the second press-connection pin 112 of the access end of the pseudo-pressure switching FPC board 110 is also press-connected to the display pin of the touch product 20 to be tested, so as to perform display detection on the touch product 20 to be tested. Therefore, the display function and the touch function of the touch module can be detected simultaneously.
Example 3: one-test-two mode
A detection method applied to various touch products, please refer to fig. 5, which includes the following steps:
s131, the two touch IC chips 130 are mounted on the universal adapter PCB 120.
S132, loading the test software into the controller 150, so that the test motherboard 140 is electrically connected to the controller 150; the controller 150 is one of a computer, a smart phone, a tablet computer, and a smart watch.
S133, connecting the two test motherboards 140 with the two output terminals of the universal adapting PCB 120 in a one-to-one correspondence manner.
S134, the input end 121 of the universal adaptor PCB 120 is inserted into the output end 113 of the pseudo-pressure adaptor FPC 110. The incoming end 121 of the universal adapter PCB 120 is a connector, the connector is soldered on the universal adapter PCB 120, and the outgoing end 113 of the pseudo-pressure adapter FPC 110 is plugged into the connector.
S135, the first crimping pins 111 of the two access ends of the false-pressure switching FPC board 110 and the touch pins of the two touch products 20 to be tested are crimped in a one-to-one correspondence manner, respectively. Before that, the first crimping pin 111 of the access end of the false-pressure switching FPC board 110 is also matched with the touch pin of the touch product 20 to be tested, and if the two are not matched, the false-pressure switching FPC board 110 needs to be replaced. The touch product 20 to be tested is a touch module or a touch module integrated by a touch module and a display module.
And S136, carrying out power-on operation, and carrying out touch detection on the two touch products 20 to be detected.
Example 4: one-test-two mode
The difference from embodiment 3 is that, referring to fig. 6 and 7, the detection method in embodiment 4 adopts the press-connection clamp 160 to realize the automatic press-connection between the pseudo-press-connection FPC board 110 and the touch product 20 to be detected, and includes the following specific steps:
(1) placing the touch product 20 to be tested on a fixed platform 1631, and firmly adsorbing and fixing the touch product 20 to be tested through a vacuumizing assembly; the dummy-pressure transfer FPC board 110 is placed on a carrier platform 1641.
(2) The fixed platform 1631 is driven by the XY moving platform 163 to perform a horizontal or longitudinal displacement, and the lifting mover 1642 drives the carrying platform 1641 to perform a lifting displacement, so that the touch pin of the touch product 20 to be tested is aligned with the first crimping pin 111 of the access end of the dummy-pressing transfer FPC board 110.
(3) Image information of the position of the touch pin of the touch product 20 to be tested and the position of the first crimping pin 111 at the access end of the false-pressure switching FPC board 110 is acquired through a camera component 162 and transmitted to a display 161, and the image information is amplified and displayed by the display 161; the alignment of the two can be seen through the display 161 to achieve accurate alignment.
(4) The lifting driver 1652 is disposed on the fixing support 1653, the lower press head 1651 is connected with the lifting driver 1652, the fixing support 1653 is driven to make longitudinal displacement through the longitudinal moving assembly 1654, so that the lower press head 1651 aligns with or covers the touch control pins of the two touch control products 20 to be tested and the alignment positions of the first press connection pins 111 of the two access ends of the false-pressure switching FPC board 110, and then the lifting driver 1652 drives the lower press head 1651 to make lifting displacement, so that the first press connection pins 111 of the access ends of the false-pressure switching FPC board 110 and the touch control pins of the touch control products 20 to be tested are respectively pressed.
Similarly, by changing the carrying manner of the touch IC chip 130, increasing or decreasing the number of the input ends of the dummy pressure transfer FPC board 110, the number of the press pins of the input end of the dummy pressure transfer FPC board 110, the number of the output ends of the universal transfer PCB board 120, the number of the test main boards 140, and the like, a large number of deformed detection schemes and detection modes can be provided to adapt to more touch products, so as to change the detection efficiency.
The detection device 10 and the detection method can be applied to flexible Incell, AMOLED Incell, TFT Incell and Oncell touch modules by replacing the false voltage switching FPC board, can also be applied to touch modules of GFF, GF, OGS and other structural types, have high compatibility and high repeatable utilization rate in production, and can greatly save the detection cost.
Compared with the prior art, the invention has at least the following advantages:
the switching structure of the detection method of the invention removes COF connecting plates with higher cost and middle switching FPC, and changes the COF connecting plates with lower cost into a universal switching PCB, so that the structure of the switching structure is simpler and the cost is lower; moreover, the connection mode between the false-pressing switching FPC board and the universal switching PCB board is changed into a mode of plugging through a connector, so that the false-pressing switching FPC board is detachable, the replacement operation is very simple, easy and quick, the detection method can be matched with various touch products, the operation is easier, the compatibility is higher, the utilization rate is higher, the cost is lower, and the maintenance is more convenient. In addition, the detection method can realize a one-test N (N is more than or equal to 2) mode, at least two connecting ends are arranged on the false-pressure switching FPC board and are respectively in pressure connection with the display module and the touch module, the display module and the touch module of the touch module can be simultaneously subjected to display detection and touch detection, mutual interference between the display module and the touch module can be avoided, the defects caused by the interference of the display module to the touch module can be effectively checked, and therefore the detection efficiency and the detection accuracy can be improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The detection device is characterized by comprising a touch IC chip, a false voltage switching FPC board, a universal switching PCB board and a test mainboard, wherein the touch IC chip is carried on the false voltage switching FPC board or the universal switching PCB board, the test mainboard is connected with the output end of the universal switching PCB board, the input end of the universal switching PCB board is connected with the output end of the false voltage switching FPC board in an inserting mode, and the input end of the false voltage switching FPC board is used for being in pressure connection with a touch product to be detected.
2. A detection method applied to various touch products is characterized by comprising the following steps:
carrying the touch IC chip on a false-pressure switching FPC board or a universal switching PCB board;
connecting the test main board with the output end of the universal adapter PCB;
inserting the connecting end of the universal switching PCB and the connecting end of the false voltage switching FPC board;
pressing the access end of the false pressure switching FPC board and a touch product to be tested;
and carrying out power-on operation, and carrying out touch detection on the touch product to be detected.
3. The method as claimed in claim 2, wherein before the power-on operation, a test software is loaded in a controller, and the test software is matched with the touch IC chip to electrically connect the controller and the test motherboard.
4. The detection method applied to multiple touch products according to claim 3, wherein the controller is one of a computer, a smart phone, a tablet computer and a smart watch.
5. The method as claimed in claim 2, wherein the access terminal of the universal adapter PCB is a connector, the connector is soldered to the universal adapter PCB, and the output terminal of the pseudo-pressure adapter FPC is plugged into the connector terminal.
6. The method as claimed in claim 2, wherein before the operation of pressing the access terminal of the dummy voltage adapting FPC board against the touch product to be tested, the first pressing pin of the access terminal of the dummy voltage adapting FPC board is further matched with the touch pin of the touch product to be tested.
7. The method as claimed in claim 2, wherein the touch product to be tested is a touch module or a touch module integrated by a touch module and a display module.
8. The method as claimed in claim 7, wherein when the touch product to be tested is a touch module, and the operation of pressing the access terminal of the dummy voltage adapting FPC board against the touch product to be tested is performed, the second pressing pin of the access terminal of the dummy voltage adapting FPC board is further pressed against the display pin of the touch product to be tested, so as to perform display detection on the touch product to be tested.
9. The method for detecting multiple touch products according to claim 2, wherein the operation of pressing the access end of the false voltage switching FPC board against the touch product to be detected specifically comprises:
placing the touch product to be tested on a fixed platform, and placing the false pressure switching FPC board on a bearing platform;
driving the fixed platform to perform transverse or longitudinal displacement through an XY moving platform, and driving the bearing platform to perform lifting displacement through a lifting shifter so as to align the touch pin of the touch product to be tested with the first crimping pin of the access end of the false-pressure switching FPC board;
acquiring image information of the position of a touch pin of the touch product to be tested and the position of a first compression joint pin of the access end of the false pressure switching FPC board through a camera assembly, transmitting the image information to a display, and displaying the image information by the display;
and driving the lower pressure head to do lifting displacement through a lifting driver so as to enable the first crimping pin of the access end of the false pressure switching FPC board to be in crimping connection with the touch control pin of the touch control product to be detected.
10. A detection method applied to various touch products is characterized by comprising the following steps:
carrying a plurality of touch IC chips on a false pressure switching FPC board or a universal switching PCB board;
connecting a plurality of test main boards with a plurality of output ends of the universal adapter PCB board in a one-to-one correspondence manner respectively;
inserting the connecting end of the universal switching PCB and the connecting end of the false voltage switching FPC board;
the multiple access ends of the false pressure switching FPC board and the multiple touch products to be tested are respectively in one-to-one corresponding pressure connection;
and carrying out power-on operation, and carrying out touch detection on a plurality of touch products to be detected.
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