Detection Method and Device for Touch Display Panel

Abstract

Embodiments of the present application provide a detection method and device for a touch display panel. The touch display panel includes a first touch channel extending in a first direction and a second touch channel extending in a second direction. Touch signal lines are connected to both ends of the first touch channel and the second touch channel. The method includes: in a first stage, transmitting a driving signal to the first touch channel, receiving an induction signal fed back by the second touch channel, and determining a first detection result according to the induction signal fed back by the second touch channel; in a second stage, transmitting a driving signal to the second touch channel, receiving an induction signal fed back by the first touch channel, and determining a second detection result according to the induction signal fed back by the first touch channel; and determining whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result. Embodiments of the present application can improve the detection accuracy of the touch display panel.

Description

Technical Field

[0001] This application belongs to the technical field of display, and particularly relates to a detection method and device for a touch display panel. Background Art

[0002] With the development of human-computer interaction, touch panels are increasingly used in display devices. Since there are slight differences in the process of assembling touch panels for the same product, in order to ensure the touch effect of the touch display panel, touch detection is generally required.

[0003] However, through research by the inventors of this application, it is found that the current detection methods for touch display panels cannot accurately detect faults in some touch channels, resulting in problems of misjudgment and low detection accuracy. Summary of the Invention

[0004] Embodiments of this application provide a detection method and device for a touch display panel, which can improve the detection accuracy of the touch display panel.

[0005] In a first aspect, an embodiment of this application provides a detection method for a touch display panel. The touch display panel includes a first touch channel extending along a first direction and a second touch channel extending along a second direction, the first direction intersects with the second direction, and touch signal lines are connected to both ends of the first touch channel and both ends of the second touch channel. The method includes: in a first stage, transmitting a driving signal to the first touch channel, receiving an induction signal fed back by the second touch channel, and determining a first detection result of the touch display panel according to the induction signal fed back by the second touch channel; in a second stage, transmitting a driving signal to the second touch channel, receiving an induction signal fed back by the first touch channel, and determining a second detection result of the touch display panel according to the induction signal fed back by the first touch channel; determining whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result.

[0006] According to the first detection result of the touch display panel in the first stage, embodiments of this application can accurately detect whether a fault occurs in the loop where the second touch channel is located; according to the second detection result of the touch display panel in the second stage, it can accurately detect whether a fault occurs in the loop where the first touch channel is located, and thus can accurately detect whether a fault occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect faults in the loops of some touch channels (such as the first touch channel), and improving the detection accuracy of the touch display panel.

[0007] According to an embodiment of the first aspect of the present application, determining a first detection result of the touch display panel according to the induction signal fed back by the second touch channel specifically includes: converting the induction signal fed back by the second touch channel into a first digital signal; when the difference between the value of the first digital signal and a preset first target value is greater than a preset first threshold, determining that a fault has occurred in the loop where the second touch channel is located.

[0008] In this way, by analyzing the induction signal fed back by the second touch channel and comparing it with the preset first target value in the embodiment of the present application, it is possible to accurately detect whether a fault has occurred in the loop where the second touch channel is located.

[0009] According to any one of the foregoing embodiments of the first aspect of the present application, the first digital signal includes M values corresponding one-to-one to M first touch channels, where M is an integer greater than 1; when the difference between the value of the first digital signal and a preset first target value is greater than a preset first threshold, determining that a fault has occurred in the second touch channel specifically includes: when the difference between at least two of the M values and the first target value is greater than the preset first threshold, determining that a fault has occurred in the loop where the second touch channel is located.

[0010] In this way, determining whether a fault has occurred in the loop where the second touch channel is located according to the comparison result between the values corresponding to at least two first touch channels in the first digital signal and the first target value can avoid misjudgment of the result of the loop where the fault of the second touch channel is located caused by an abnormal value corresponding to one first touch channel, and improve the accuracy of the fault detection result of the loop where the second touch channel is located.

[0011] According to any one of the foregoing embodiments of the first aspect of the present application, determining a second detection result of the touch display panel according to the induction signal fed back by the first touch channel specifically includes: converting the induction signal fed back by the first touch channel into a second digital signal; when the difference between the value of the second digital signal and a preset second target value is greater than a preset second threshold, determining that a fault has occurred in the loop where the first touch channel is located.

[0012] In this way, by analyzing the induction signal fed back by the first touch channel and comparing it with the preset second target value in the embodiment of the present application, it is possible to accurately detect whether a fault has occurred in the loop where the first touch channel is located.

[0013] According to any of the foregoing embodiments of the first aspect of the present application, the second digital signal includes N values corresponding one-to-one to N second touch channels, where N is an integer greater than 1; when the difference between the value of the second digital signal and a preset second target value is greater than a preset second threshold, it is determined that a fault has occurred in the loop where the first touch channel is located, specifically including: when the difference between at least two of the N values and the second target value is greater than the preset second threshold, it is determined that a fault has occurred in the loop where the first touch channel is located.

[0014] In this way, according to the comparison result between the values corresponding to at least two second touch channels in the second digital signal and the second target value, it is determined whether a fault has occurred in the loop where the first touch channel is located, which can avoid misjudgment of the fault result of the loop where the first touch channel is located caused by the abnormal value corresponding to one second touch channel, and improve the accuracy of the fault detection result of the loop where the first touch channel is located.

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the touch display panel is electrically connected to the detection device of the touch display panel. The detection device of the touch display panel includes a driving signal output circuit, a switching circuit, and an induction signal receiving and processing circuit; the driving signal output circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit, and the driving signal output circuit is used to output a driving signal; the induction signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit; in the first stage, a driving signal is transmitted to the first touch channel, and the induction signal fed back by the second touch channel is received, specifically including: in the first stage, the switching circuit is controlled to switch to connect the driving signal output circuit to the first touch channel, and the switching circuit is controlled to switch to connect the induction signal receiving and processing circuit to the second touch channel.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the switching circuit includes a first switching circuit and a second switching circuit. The first switching circuit includes a first switch and a third switch, and the second switching circuit includes a second switch and a fourth switch; the driving signal output circuit is electrically connected to the first touch channel through the first switch, and the driving signal output circuit is electrically connected to the second touch channel through the third switch; the first touch channel is electrically connected to the induction signal receiving and processing circuit through the second switch, and the second touch channel is electrically connected to the induction signal receiving and processing circuit through the fourth switch; in the first stage, a driving signal is transmitted to the first touch channel, and the induction signal fed back by the second touch channel is received, specifically including: the first switch and the fourth switch are turned on, and the second switch and the third switch are turned off. The driving signal output by the driving signal output circuit is transmitted to the first touch channel through the first switch, and the induction signal generated by the second touch channel is transmitted to the induction signal receiving and processing circuit through the fourth switch.

[0017] According to any of the foregoing embodiments of the first aspect of the present application, in the second stage, a driving signal is transmitted to the second touch channel, and an induction signal fed back by the first touch channel is received. Specifically, it includes: in the second stage, controlling the switching circuit to switch to connect the driving signal output circuit to the second touch channel, and controlling the switching circuit to switch to connect the induction signal receiving and processing circuit to the first touch channel.

[0018] According to any of the foregoing embodiments of the first aspect of the present application, in the second stage, a driving signal is transmitted to the second touch channel, and an induction signal fed back by the first touch channel is received. Specifically, it includes: in the second stage, the first switch and the fourth switch are turned off, and the second switch and the third switch are turned on. The driving signal output by the driving signal output circuit is transmitted to the second touch channel through the third switch, and the induction signal generated by the first touch channel is transmitted to the induction signal receiving and processing circuit through the second switch.

[0019] According to any of the foregoing embodiments of the first aspect of the present application, based on the first detection result and the second detection result, determining whether a fault occurs in the first touch channel and / or the second touch channel may include: based on the first detection result and the second detection result, determining the number and / or position of the circuit where the faulty first touch channel is located and / or the circuit where the faulty second touch channel is located.

[0020] In this way, by determining the number and / or position of the circuit where the faulty first touch channel is located and / or the circuit where the faulty second touch channel is located, for data analysis, it can provide a reference for the repair of the touch display panel and the improvement of the manufacturing process of other subsequent touch display panels, effectively avoiding open circuits at similar positions in other touch display panels prepared subsequently, and improving the production yield of the touch display panel.

[0021] According to any of the foregoing embodiments of the first aspect of the present application, the method may further include: when a fault occurs in at least one circuit where the first touch channels are located or at least one circuit where the second touch channels are located, determining that there is a fault in the circuit where the touch channels of the touch display panel are located; when no fault occurs in all the circuits where the first touch channels are located and all the circuits where the second touch channels are located, determining that there is no fault in the circuit where the touch channels of the touch display panel are located.

[0022] Second aspect, an embodiment of the present application provides a detection device for a touch display panel. The touch display panel includes a first touch channel extending in a first direction and a second touch channel extending in a second direction. The first direction intersects the second direction. Touch signal lines are connected to both ends of the first touch channel and both ends of the second touch channel. The detection device for the touch display panel includes: a driving signal output circuit, a switching circuit, a sensing signal receiving and processing circuit, and an information output module; the driving signal output circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit, and the driving signal output circuit is configured to output a driving signal; the sensing signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit; the switching circuit can connect the driving signal output circuit to the first touch channel, and the sensing signal receiving and processing circuit is connected to the second touch channel. The sensing signal receiving and processing circuit determines a first detection result of the touch display panel according to the sensing signal fed back by the second touch channel; the switching circuit can connect the driving signal output circuit to the second touch channel, and the sensing signal receiving and processing circuit is connected to the first touch channel. The sensing signal receiving and processing circuit determines a second detection result of the touch display panel according to the sensing signal fed back by the first touch channel; the sensing signal receiving and processing circuit is further configured to determine whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result; the information output module is configured to output detection information on whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located.

[0023] The detection device for the touch display panel according to the embodiment of the present application can accurately detect whether a fault occurs in the loop where the second touch channel is located according to the first detection result of the touch display panel in the first stage; according to the second detection result of the touch display panel in the second stage, it can accurately detect whether a fault occurs in the loop where the first touch channel is located, and thus can accurately detect whether a fault occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect a fault in the loop where some touch channels (such as the first touch channel) are located, and improving the detection accuracy of the touch display panel.

[0024] According to the implementation manner of the second aspect of the present application, the switching circuit includes a first switching circuit and a second switching circuit. The driving signal output circuit is electrically connected to the first touch channel and the second touch channel through the first switching circuit respectively. The first switching circuit is configured to switch the connection between the driving signal output circuit and the first touch channel or the second touch channel; the sensing signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel through the second switching circuit respectively. The second switching circuit is configured to switch the connection between the sensing signal receiving and processing circuit and the first touch channel or the second touch channel.

[0025] According to any of the foregoing embodiments of the second aspect of the present application, the first switching circuit includes a first switch and a third switch, and the second switching circuit includes a second switch and a fourth switch; the drive signal output circuit is electrically connected to the first touch channel through the first switch, and the drive signal output circuit is electrically connected to the second touch channel through the third switch; the first touch channel is electrically connected to the sensing signal receiving and processing circuit through the second switch, and the second touch channel is electrically connected to the sensing signal receiving and processing circuit through the fourth switch.

[0026] According to any of the foregoing embodiments of the second aspect of the present application, the detection device of the touch display panel is integrated in the touch chip.

[0027] In the touch display panel detection method and device according to the embodiments of the present application, the touch display panel includes a first touch channel extending in a first direction and a second touch channel extending in a second direction, the first direction intersects the second direction, and touch signal lines are connected to both ends of the first touch channel and both ends of the second touch channel. In the first stage, a drive signal is transmitted to the first touch channel, the induced signal fed back by the second touch channel is received, and according to the induced signal fed back by the second touch channel, the first detection result of the touch display panel is determined; in the second stage, a drive signal is transmitted to the second touch channel, the induced signal fed back by the first touch channel is received, and according to the induced signal fed back by the first touch channel, the second detection result of the touch display panel is determined. According to the first detection result and the second detection result, it is determined whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located. According to the first detection result of the touch display panel in the first stage, the present application embodiment can accurately detect whether a fault occurs in the loop where the second touch channel is located; according to the second detection result of the touch display panel in the second stage, the present application embodiment can accurately detect whether a fault occurs in the loop where the first touch channel is located, that is, it can accurately detect whether a fault occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect a fault in the loop where some touch channels (such as the first touch channel) are located, and improving the detection accuracy of the touch display panel. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of a touch display panel;

[0030] Figure 2 It is a schematic structural diagram of a touch display panel provided by an embodiment of the present application;

[0031] Figure 3 A schematic flowchart of a detection method for a touch display panel provided by an embodiment of the present application;

[0032] Figure 4 A schematic timing diagram of a driving signal in the detection method for a touch display panel provided by an embodiment of the present application;

[0033] Figure 5 For Figure 3 A schematic flowchart of S101 in the detection method for the touch display panel shown;

[0034] Figure 6 For Figure 3 A schematic flowchart of S102 in the detection method for the touch display panel shown;

[0035] Figure 7 A schematic circuit diagram of a detection device for a touch display panel connected to the touch display panel provided by an embodiment of the present application;

[0036] Figure 8 Another schematic circuit diagram of a detection device for a touch display panel connected to the touch display panel provided by an embodiment of the present application;

[0037] Figure 9 Another schematic circuit diagram of a detection device for a touch display panel connected to the touch display panel provided by an embodiment of the present application;

[0038] Figure 10 Another schematic circuit diagram of a detection device for a touch display panel connected to the touch display panel provided by an embodiment of the present application;

[0039] Figure 11 Another schematic structural diagram of a touch display panel provided by an embodiment of the present application;

[0040] Figure 12 Another schematic circuit diagram of a touch display panel provided by an embodiment of the present application;

[0041] Figure 13 Another schematic flowchart of a detection method for a touch display panel provided by an embodiment of the present application;

[0042] Figure 14 Another schematic structural diagram of a touch display panel provided by an embodiment of the present application;

[0043] Figure 15 Another schematic structural diagram of a touch display panel provided by an embodiment of the present application;

[0044] Figure 16 A schematic structural diagram of a detection system for a touch display panel provided by an embodiment of the present application;

[0045] Figure 17 This is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0046] The features of various aspects of the present application and exemplary embodiments will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "comprising..." do not preclude the existence of additional identical elements in the process, method, article or device comprising the said elements.

[0048] It should be understood that the term "and / or" used herein is only a kind of association relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0049] Before elaborating on the technical solutions provided by the embodiments of the present application, for the convenience of understanding the embodiments of the present application, the present application first specifically describes the problems existing in the prior art:

[0050] Figure 1 This is a schematic structural diagram of a touch display panel. As Figure 1As shown in the figure, as the size of the touch display panel increases, in order to reduce the driving load of the touch channels, the touch display panel can adopt a design with bilateral wire-out of 2TX + 2RX, where TX is the driving channel and RX is the receiving channel. The driving channel TX can be understood as the channel where the touch driving electrode is located, and the receiving channel RX can be understood as the channel where the touch sensing electrode is located. Specifically, the touch display panel can include a plurality of driving channels TX extending in the column direction and a plurality of receiving channels RX extending in the row direction, and the plurality of driving channels TX and the plurality of receiving channels RX are arranged in a mutually crossed and insulated manner. Among them, a first electrode trace 110 is led out from both ends of each driving channel TX, and each first electrode trace 110 is respectively connected to the bonding area 100 of the touch display substrate and electrically connected to the driving signal output terminal P1 in the bonding area 100. A second electrode trace 120 is led out from both ends of each receiving channel RX, and each second electrode trace 120 is respectively connected to the bonding area 100 of the touch display substrate and electrically connected to the sensing signal receiving terminal P2 in the bonding area 100.

[0051] During touch detection, the driving channel TX receives a driving signal, and under the coupling effect between the driving channel TX and the receiving channel RX, the receiving channel RX generates an induced signal. Then, after converting the induced signal into touch data, the touch detection is completed by parsing the touch data.

[0052] The inventors of the present application have found through research that for the 2TX + 2RX design, when one end of the receiving channel RX is open (such as Figure 1 when there is an open circuit at either I or II in the figure), there are obvious differences between the touch data at this time and the touch data when both ends of the receiving channel RX are not open. Therefore, this type of defect when one end of the receiving channel RX is open can be detected.

[0053] However, when one end of the driving channel TX is open, since when one end of the driving channel TX is open (such as Figure 1 when there is an open circuit at either III or IV in the figure), there are no obvious differences between the touch data at this time and the touch data when both ends of the driving channel TX are not open. Therefore, the touch detection methods adopted in the related art cannot accurately detect this type of defect when one end of the driving channel TX is open, but will misjudge the touch display panel with this type of defect as a qualified product, resulting in possible touch abnormality problems after the touch display panel leaves the factory.

[0054] In view of the above research findings of the inventors, the embodiments of the present application provide a detection method and device for a touch display panel, which can solve the technical problems of misjudgment and low accuracy in touch detection existing in the related art.

[0055] The technical concept of the embodiment of the present application lies in: in the first stage, a driving signal is transmitted to the first touch channel, and an induction signal fed back by the second touch channel is received, and according to the induction signal fed back by the second touch channel, a first detection result of the touch display panel is determined; in the second stage, a driving signal is transmitted to the second touch channel, and an induction signal fed back by the first touch channel is received, and according to the induction signal fed back by the first touch channel, a second detection result of the touch display panel is determined; according to the first detection result and the second detection result, it is determined whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located. In this way, according to the first detection result of the touch display panel in the first stage, it can be accurately detected whether a fault occurs in the loop where the second touch channel is located; according to the second detection result of the touch display panel in the second stage, it can be accurately detected whether a fault occurs in the loop where the first touch channel is located, that is, it can be accurately detected whether a fault occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect a fault in the loop where some touch channels (such as the first touch channel) are located, and improving the detection accuracy of the touch display panel.

[0056] First, the detection method of the touch display panel provided by the embodiment of the present application will be introduced below.

[0057] Figure 2 It is a schematic structural diagram of a touch display panel provided by an embodiment of the present application. Figure 3 It is a schematic flowchart of a detection method of a touch display panel provided by an embodiment of the present application. As Figure 2 shown, in the embodiment of the present application, the touch display panel 20 may include a first touch channel 01 extending along a first direction X and a second touch channel 02 extending along a second direction Y. Among them, the first direction X intersects with the second direction Y. Touch signal lines are connected to both ends of the first touch channel 01 and both ends of the second touch channel 02, that is, a 2TX + 2RX bilateral outlet design is adopted. Exemplarily, the first direction X may be the column direction of the touch display panel 20, and the second direction Y may be the row direction of the touch display panel 20. Or, the first direction X may be the row direction of the touch display panel 20, and the second direction Y may be the column direction of the touch display panel 20. The embodiment of the present application does not limit this. The touch display panel provided by the embodiment of the present application may adopt a 2TX + 2RX bilateral outlet design, that is, touch traces are connected to both sides of the first touch channel 01 and the second touch channel 02.

[0058] As Figure 3 shown, the detection method of the touch display panel provided by the embodiment of the present application may include the following steps S101, S102, and S103.

[0059] S101. In the first stage, a driving signal is transmitted to the first touch channel, an induction signal fed back by the second touch channel is received, and a first detection result of the touch display panel is determined according to the induction signal fed back by the second touch channel.

[0060] Figure 4 It is a timing schematic diagram of a driving signal in the detection method of the touch display panel provided by the embodiment of the present application. Combining Figure 2 and Figure 4 As shown, in the first stage, a driving signal can be transmitted to the first touch channel 01, and the driving signal can be, for example, an alternating signal with a preset frequency / amplitude as shown in Figure 4 After the driving signal is input to the first touch channel 01, due to the coupling effect between the first touch channel 01 and the second touch channel 02, an induction signal will be generated in the second touch channel 02. The induction signal generated by the second touch channel 02 will be transmitted to the touch chip through the touch trace connected to the second touch channel 02. By analyzing the induction signal, the touch chip can determine the defect of the loop where the first touch channel 01 is located and / or the loop where the second touch channel 02 is located.

[0061] Exemplarily, the defect of the loop where the first touch channel is located may include an open circuit of the first touch channel and / or the touch signal line connected to the first touch channel. The defect of the loop where the second touch channel is located may include an open circuit of the second touch channel and / or the touch signal line connected to the second touch channel.

[0062] It should be noted that in the first stage, the second touch channel 02 feeds back the induction signal (i.e., equivalent to the receiving channel RX mentioned above). Therefore, in the first stage, the defect of the loop where the second touch channel 02 is located can be detected better, while it is not conducive to detecting the defect of the loop where the first touch channel 01 is located. Therefore, in the first stage, a first detection result of the touch display panel can be determined according to the induction signal fed back by the second touch channel, that is, the defect of the loop where the second touch channel 02 is located can be accurately determined.

[0063] S102. In the second stage, a driving signal is transmitted to the second touch channel, an induction signal fed back by the first touch channel is received, and a second detection result of the touch display panel is determined according to the induction signal fed back by the first touch channel.

[0064] Combining Figure 2 and Figure 4 As shown, in the second stage, a driving signal can be transmitted to the second touch channel 02, and the driving signal can be, for example, as shown in Figure 4An alternating signal with a preset frequency / amplitude as shown. After the second touch channel 02 inputs a driving signal, due to the coupling effect between the first touch channel 01 and the second touch channel 02, an induced signal will be generated in the first touch channel 01. The induced signal generated in the first touch channel 01 will be transmitted to the touch chip through the touch trace connected to the first touch channel 01. By analyzing the induced signal, the touch chip can determine the defect of the loop where the first touch channel 01 is located and / or the loop where the second touch channel 02 is located.

[0065] It should be noted that in the second stage, the first touch channel 01 feeds back the induced signal (which is equivalent to the receiving channel RX mentioned above). Therefore, in the second stage, it is possible to better detect the defect of the loop where the first touch channel 01 is located, but it is not conducive to detecting the defect of the loop where the second touch channel 02 is located. Therefore, in the second stage, according to the induced signal fed back by the first touch channel, the second detection result of the touch display panel can be determined, that is, the defect of the loop where the first touch channel 01 is located can be accurately determined.

[0066] S103. Determine whether there is a fault in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result.

[0067] As described above, the first detection result of the touch display panel can accurately reflect the defect of the loop where the second touch channel 02 is located, and the second detection result of the touch display panel can accurately reflect the defect of the loop where the first touch channel 01 is located. Therefore, according to the first detection result and the second detection result of the touch display panel, it can be accurately determined whether there is a fault in the loop where the first touch channel is located and / or the loop where the second touch channel is located.

[0068] It should be noted that the fault of the loop where the first touch channel is located may include an open circuit of the first touch channel and / or the touch signal line connected to the first touch channel. The fault of the loop where the second touch channel is located may include an open circuit of the second touch channel and / or the touch signal line connected to the second touch channel. Among them, the touch signal line includes the first touch signal line and / or the second touch signal line described below.

[0069] In this way, according to the first detection result of the touch display panel in the first stage, the embodiment of the present application can accurately detect whether there is a fault in the loop where the second touch channel is located; according to the second detection result of the touch display panel in the second stage, it can accurately detect whether there is a fault in the loop where the first touch channel is located, that is, it can accurately detect whether there is a fault in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect the fault of the loop where some touch channels (such as the first touch channel) are located, and improving the detection accuracy of the touch display panel.

[0070] It should be noted that the switching between the first touch channel 01 and the second touch channel 02 can be performed only during touch detection, and during the subsequent use of the touch display panel, the switching between the first touch channel 01 and the second touch channel 02 is not performed. For example, during the subsequent use of the touch display panel, the first touch channel 01 is used as the driving channel TX, and the second touch channel 02 is used as the receiving channel RX.

[0071] The following introduces the specific implementation manners of the above steps.

[0072] First, introduce S101. In the first stage, a driving signal is transmitted to the first touch channel, an induction signal fed back by the second touch channel is received, and according to the induction signal fed back by the second touch channel, a first detection result of the touch display panel is determined.

[0073] Figure 5 For Figure 3 a schematic flow diagram of S101 in the detection method of the touch display panel shown. As Figure 5 shown, in S101, according to the induction signal fed back by the second touch channel, determining the first detection result of the touch display panel may specifically include the following steps S501 and S502.

[0074] S501. Convert the induction signal fed back by the second touch channel into a first digital signal.

[0075] In some embodiments, the touch chip may include: a plurality of analog front-end (AFE) circuits, an analog-to-digital converter (ADC), and a digital processing module. Among them, each AFE circuit may be connected to a second touch channel 02. The induction signal (analog signal) generated by each second touch channel 02 is transmitted to the AFE circuit electrically connected to the second touch channel 02, and the AFE circuit performs processing such as amplification and / or filtering on the received induction signal. Each AFE circuit is also connected to the ADC to transmit the induction signal processed by each AFE circuit to the ADC, so that the induction signal processed by each AFE circuit is collected by the ADC.

[0076] After the ADC converts the collected signal into a digital signal, it is transmitted to the digital processing module, so that the digital processing module determines whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0077] It is easily understandable that the sensed signal fed back by the second touch channel is an analog signal. When an open circuit occurs at one end of the second touch channel, since an open circuit occurs at one end of the second touch channel, the electrical parameters (such as voltage value or current value) of the sensed signal fed back at this time are different from those of the sensed signal fed back when both ends of the second touch channel are not open. Furthermore, since the digital signal is obtained based on the sensed signal, the value of the digital signal when an open circuit occurs at one end of the second touch channel is different from the value of the digital signal when both ends of the second touch channel are not open. However, as described above, the inventors of the present application have found that the value of the digital signal when an open circuit occurs at one end of the receiving channel RX is less different from the value of the digital signal of the normal receiving channel RX (i.e., both ends of the receiving channel RX are not open), so it is difficult to detect such a defect when an open circuit occurs at one end of the receiving channel RX. And the value of the digital signal when an open circuit occurs at one end of the driving channel TX is more different from the value of the digital signal of the normal driving channel TX (i.e., both ends of the driving channel TX are not open), so such a defect when an open circuit occurs at one end of the driving channel TX can be better detected.

[0078] Table 1 schematically shows Figure 2 the first digital signal when an open circuit occurs at the position ① shown and no open circuit occurs at the position ②. Table 2 schematically shows Figure 2 the first digital signal when an open circuit occurs at the position ② shown and no open circuit occurs at the position ①.

[0079] Table 1

[0080]

[0081] Table 2

[0082]

[0083] As can be seen from Table 1 and Table 2, after the sensed signal fed back by each second touch channel is converted into the first digital signal, it can include multiple values, and each value corresponds to a first touch channel. For example, assuming that each second touch channel overlaps with 5 first touch channels, then the first digital signal converted by each second touch channel can sequentially include the value corresponding to the first touch channel 1, the value corresponding to the first touch channel 2, the value corresponding to the first touch channel 3, the value corresponding to the first touch channel 4, and the value corresponding to the first touch channel 5. Taking the second touch channel 1 in Table 1 as an example, for example, the first digital signal converted by the second touch channel 1 can sequentially include the value 0.015 corresponding to the first touch channel 1, the value 0.070 corresponding to the first touch channel 2, the value 0.066 corresponding to the first touch channel 3, the value 0.012 corresponding to the first touch channel 4, and the value 0.052 corresponding to the first touch channel 5.

[0084] S502. When the difference between the value of the first digital signal and the preset first target value is greater than the preset first threshold, it is determined that a fault has occurred in the loop where the second touch channel is located.

[0085] Specifically, as shown in Table 1 above, when there is an open circuit at ①, such as a fault occurs in the loop where the first touch channel 2 or the first touch channel 3 is located, the difference between the value (i.e., touch data) corresponding to the loop where the first touch channel 2 or the first touch channel 3 is located and the touch data of the loop where the surrounding normal first touch channel is located is about 1 to 3 times. This data difference is less than the preset inter-chip difference multiple (such as 5 times), so it is impossible to better detect such defects when an open circuit occurs at one end of the first touch channel. Among them, affected by factors such as production process, the touch data difference between chips can be understood as the touch data difference between different touch display panels.

[0086] As shown in Table 2 above, when there is an open circuit at ②, that is, a fault occurs in the loop where the second touch channel 2 or the second touch channel 3 is located, the difference between the value (i.e., touch data) corresponding to the loop where the second touch channel 2 or the second touch channel 3 is located and the touch data of the loop where the surrounding normal second touch channel is located is more than 5 times. This data difference is greater than the preset inter-chip difference multiple (such as 5 times), so it is possible to better detect such defects when an open circuit occurs at one end of the second touch channel. Specifically, the data difference can be much greater than the preset inter-chip difference multiple, and all such defects when an open circuit occurs at one end of the second touch channel can be detected.

[0087] Therefore, in S502, the value in the first digital signal after conversion of each second touch channel can be compared with the preset first target value. For any loop where the i-th second touch channel is located, when the difference between the value in the first digital signal after conversion of the i-th second touch channel and the first target value is greater than the preset first threshold, it can be determined that a fault has occurred in the loop where the i-th second touch channel is located, where i is a positive integer. Among them, the first target value and the preset first threshold can be flexibly set according to the actual situation, and the embodiments of the present application do not limit this.

[0088] In this way, by analyzing the induction signals fed back by each second touch channel and comparing them with the preset first target value, it is possible to accurately detect whether a fault has occurred in the loop where each second touch channel is located.

[0089] As shown in Table 1 and Table 2 above, optionally, the first digital signal after conversion of each second touch channel may include M values corresponding one-to-one to M first touch channels, where M is an integer greater than 1. Correspondingly, S502 may specifically include the following steps: When the difference between at least two of the M values and the first target value is greater than a preset first threshold, it is determined that a fault has occurred in the loop where the second touch channel is located.

[0090] That is, for any i-th second touch channel, when the difference between at least two of the values in the first digital signal after conversion of the i-th second touch channel and the first target value is greater than the preset first threshold, it can be determined that a fault has occurred in the loop where the i-th second touch channel is located.

[0091] In this way, according to the comparison result between the values corresponding to at least two first touch channels in the first digital signal and the first target value, it is determined whether a fault has occurred in the loop where the second touch channel is located, which can avoid misjudgment of the fault result of the loop where the second touch channel is located caused by abnormal values corresponding to one first touch channel, and improve the accuracy of the fault detection result of the loop where the second touch channel is located.

[0092] Next, S102 is introduced. In the second stage, a drive signal is transmitted to the second touch channel, and an induction signal fed back by the first touch channel is received, and according to the induction signal fed back by the first touch channel, a second detection result of the touch display panel is determined.

[0093] Figure 6 For Figure 3 a schematic flowchart of S102 in the detection method of the touch display panel shown. As Figure 6 shown, in S102, according to the induction signal fed back by the first touch channel, determining the second detection result of the touch display panel may specifically include the following steps S601 and S602.

[0094] S601. Convert the induction signal fed back by the first touch channel into a second digital signal.

[0095] In some embodiments, each AFE circuit may be connected to a first touch channel 01. The induction signal (analog signal) generated by each first touch channel 01 is transmitted to the AFE circuit electrically connected to the first touch channel 01, and the AFE circuit performs processing such as amplification and / or filtering on the received induction signal. Each AFE circuit is also connected to the ADC to transmit the induction signal processed by each AFE circuit to the ADC, so that the induction signal processed by each AFE circuit is collected by the ADC.

[0096] After the ADC converts the collected signal into a digital signal, it is transmitted to the digital processing module, so that the digital processing module can determine whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0097] Table 3 schematically shows Figure 2 the second digital signal when a break occurs at ① as shown and no break occurs at ②. Table 4 schematically shows Figure 2 the second digital signal when a break occurs at ② as shown and no break occurs at ①.

[0098] Table 3

[0099]

[0100] Table 4

[0101]

[0102] As can be seen from Table 3 and Table 4, after the induction signal fed back by each first touch channel is converted into a second digital signal, it can include multiple values, and each value corresponds to a second touch channel. For example, assuming that each first touch channel overlaps with 5 second touch channels, then the second digital signal converted by each first touch channel can sequentially include the value corresponding to the second touch channel 1, the value corresponding to the second touch channel 2, the value corresponding to the second touch channel 3, the value corresponding to the second touch channel 4, and the value corresponding to the second touch channel 5. Taking the first touch channel 1 in Table 3 as an example, for example, the second digital signal converted by the first touch channel 1 can sequentially include the value 0.020 corresponding to the second touch channel 1, the value 0.097 corresponding to the second touch channel 2, the value 0.088 corresponding to the second touch channel 3, the value 0.025 corresponding to the second touch channel 4, and the value 0.039 corresponding to the second touch channel 5.

[0103] S602. When the difference between the value of the second digital signal and the preset second target value is greater than the preset second threshold, it is determined that a fault occurs in the loop where the first touch channel is located.

[0104] Specifically, as shown in Table 3 above, when a break occurs at ①, such as when a fault occurs in the loop where the second touch channel 2 or the third touch channel is located, the difference between the value (i.e., touch data) corresponding to the loop where the second touch channel 2 or the third touch channel is located and the touch data of the loop where the surrounding normal first touch channels are located is more than 5 times, and this data difference is greater than the touch data difference between chips (such as 5 times). Therefore, such defects when a break occurs at one end of the first touch channel can be detected better.

[0105] It should be noted that the second target value and the preset second threshold can be flexibly set according to the actual situation, and the embodiments of the present application do not limit this.

[0106] For example, in some examples, the second target value and the preset second threshold can be determined according to historical touch data. For example, the historical touch data where the circuit where the touch channel is located does not malfunction all fluctuates between 0.01 and 0.05. Therefore, for example, the second target value can be set to 0.03. Then, the preset second threshold can be the product of the second target value and a preset multiple, such as 5 times the second target value, that is, 0.15. It can be seen that the difference between the touch data corresponding to the first touch channel 2 (such as 0.290) and the second target value (such as 0.03) is greater than the preset second threshold (such as 0.15), so it can be determined that the circuit where the first touch channel 2 is located malfunctions.

[0107] As shown in Table 4 above, when there is an open circuit at ②, such as when the circuit where the second touch channel 2 is located or the circuit where the second touch channel 3 is located malfunctions, the difference between the value (i.e., touch data) corresponding to the circuit where the second touch channel 2 is located or the circuit where the second touch channel 3 is located and the touch data of the surrounding normal second touch channel circuits is about 1 to 3 times. This data difference is less than the touch data difference between chips (such as 5 times), so it is impossible to better detect such defects when one end of the second touch channel malfunctions.

[0108] Still taking the second target value as 0.03 and the preset second threshold as 0.15 as an example, it can be seen from Table 4 that the difference between the touch data corresponding to the second touch channel 2 (such as 0.090) and the second target value (such as 0.03) is significantly less than the preset second threshold (such as 0.15), and the difference between the touch data corresponding to the second touch channel 3 (such as 0.083) and the second target value (such as 0.03) is significantly less than the preset second threshold (such as 0.15). Therefore, it is impossible to better detect the defects of the circuit where the second touch channel 2 is located and the circuit where the second touch channel 3 is located.

[0109] Therefore, in S502, the value in the converted second digital signal of each first touch channel can be compared with the preset second target value. For any i-th first touch channel, when the difference between the value in the converted second digital signal of the i-th first touch channel and the second target value is greater than the preset second threshold, it can be determined that the circuit where the i-th first touch channel is located malfunctions, where i is a positive integer. Among them, the second target value and the preset second threshold can be flexibly set according to the actual situation, and the embodiments of the present application do not limit this.

[0110] In this way, by analyzing the induction signals fed back by each first touch channel and comparing them with the preset second target value, it is possible to accurately detect whether a fault occurs in the loop where each first touch channel is located.

[0111] As shown in Table 3 and Table 4 above, optionally, the second digital signal converted by each first touch channel may include N values corresponding one-to-one to N second touch channels, where N is an integer greater than 1. Correspondingly, S602 may specifically include the following steps: when the difference between at least two of the N values and the second target value is greater than a preset second threshold, it is determined that a fault occurs in the loop where the first touch channel is located.

[0112] That is, for any i-th first touch channel, when the difference between at least two of the values in the second digital signal converted by the i-th first touch channel and the second target value is greater than the preset second threshold, it can be determined that a fault occurs in the loop where the i-th first touch channel is located.

[0113] In this way, according to the comparison result between the values corresponding to at least two second touch channels in the second digital signal and the second target value, determining whether a fault occurs in the loop where the first touch channel is located can avoid misjudging the fault result of the loop where the first touch channel is located caused by the abnormal value corresponding to one second touch channel, and improve the accuracy of the fault detection result of the loop where the first touch channel is located.

[0114] The following will describe in detail the detection method and device for a touch display panel in combination with the specific circuit structure in some embodiments.

[0115] Figure 7 FIG. is a schematic circuit diagram of a detection device for a touch display panel connected to the touch display panel provided in an embodiment of the present application. As Figure 7 shown, according to some embodiments of the present application, optionally, the touch display panel 20 may be electrically connected to the detection device 70 of the touch display panel, and the detection device 70 of the touch display panel may include a driving signal output circuit 700, a switching circuit 710, and an induction signal receiving and processing circuit 720. Combining Figure 2 and Figure 7 shown, the driving signal output circuit 700 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the switching circuit 710, and the driving signal output circuit 700 can be used to output a driving signal. The induction signal receiving and processing circuit 720 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the switching circuit 710.

[0116] S101. In the first stage, a driving signal is transmitted to the first touch channel, and the induction signal fed back by the second touch channel is received. Specifically, it may include the following steps:

[0117] In the first stage, the control switching circuit switches to connect the drive signal output circuit to the first touch channel, and the control switching circuit switches to connect the induction signal receiving and processing circuit to the second touch channel.

[0118] Specifically, in the first stage, the switching circuit 710 switches to connect the drive signal output circuit 700 to the first touch channel 01, and the switching circuit 710 switches to connect the induction signal receiving and processing circuit 720 to the second touch channel 02. The induction signal receiving and processing circuit 720 can determine the first detection result of the touch display panel according to the induction signal fed back by the second touch channel 02.

[0119] S102. In the second stage, a drive signal is transmitted to the second touch channel, and the induction signal fed back by the first touch channel is received. Specifically, the following steps may be included:

[0120] In the second stage, the control switching circuit switches to connect the drive signal output circuit to the second touch channel, and the control switching circuit switches to connect the induction signal receiving and processing circuit to the first touch channel.

[0121] Specifically, in the second stage, the switching circuit 710 switches to connect the drive signal output circuit 700 to the second touch channel 02, and the switching circuit 710 switches to connect the induction signal receiving and processing circuit 720 to the first touch channel 01. The induction signal receiving and processing circuit 720 can determine the second detection result of the touch display panel according to the induction signal fed back by the first touch channel 01.

[0122] The induction signal receiving and processing circuit 720 can also be used to determine whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result.

[0123] Continue to refer to Figure 7 , for the convenience of informing the user of the detection result, the detection device 70 of the touch display panel may further include an information output module 730. The information output module 730 can be used to output the detection information on whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located.

[0124] Figure 8 This is another circuit schematic diagram of the detection device of the touch display panel connected to the touch display panel provided by the embodiment of the present application. As Figure 8 shown, according to some embodiments of the present application, optionally, the switching circuit 710 may include a first switching circuit 801 and a second switching circuit 802. Combining Figure 2 and Figure 8As shown, the drive signal output circuit 710 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the first switching circuit 801 respectively. The first switching circuit 801 is used to switch the connection between the drive signal output circuit 710 and the first touch channel 01 or the second touch channel 02. The induction signal receiving and processing circuit 720 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the second switching circuit 802 respectively. The second switching circuit 802 can be used to switch the connection between the induction signal receiving and processing circuit 720 and the first touch channel 01 or the second touch channel 02.

[0125] Correspondingly, S101, in the first stage, transmit a drive signal to the first touch channel and receive the induction signal fed back by the second touch channel, which can specifically include the following steps:

[0126] In the first stage, control the first switching circuit 801 to switch to connect the drive signal output circuit 700 to the first touch channel 01, and control the second switching circuit 802 to switch to connect the induction signal receiving and processing circuit 720 to the second touch channel 02.

[0127] S102, in the second stage, transmit a drive signal to the second touch channel and receive the induction signal fed back by the first touch channel, which can specifically include the following steps:

[0128] In the second stage, control the first switching circuit 801 to switch to connect the drive signal output circuit 700 to the second touch channel 02, and control the second switching circuit 802 to switch to connect the induction signal receiving and processing circuit 720 to the first touch channel 01.

[0129] Figure 9 Another circuit schematic diagram of the detection device for the touch display panel connected to the touch display panel provided by the embodiment of the present application. Combining Figure 8 and Figure 9 As shown, according to some embodiments of the present application, optionally, the first switching circuit 801 can include a first switch 901 and a third switch 903, and the second switching circuit 802 can include a second switch 902 and a fourth switch 904. The drive signal output circuit 700 can be electrically connected to the first touch channel 01 through the first switch 901, and the first touch channel 01 can be electrically connected to the induction signal receiving and processing circuit 720 through the second switch 902. The drive signal output circuit 700 can be electrically connected to the second touch channel 02 through the third switch 903, and the second touch channel 02 can be electrically connected to the induction signal receiving and processing circuit 720 through the fourth switch 904.

[0130] In the first stage, the first switch 901 and the fourth switch 904 are turned on, and the second switch 902 and the third switch 903 are turned off. The driving signal output by the driving signal output circuit 700 is transmitted to the first touch channel 01 through the first switch 901. Under the coupling effect between the first touch channel 01 and the second touch channel 02, an induced signal will be generated in the second touch channel 02. The induced signal generated in the second touch channel 02 will be transmitted to the induced signal receiving and processing circuit 720 through the fourth switch 904. Exemplarily, the induced signal receiving and processing circuit 720 may include an analog front end AFE, an analog-to-digital converter ADC, and a digital processing module 900. The analog front end AFE is electrically connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is electrically connected to the digital processing module 900. The analog front end AFE processes the received induced signal, such as amplifying and / or filtering. The induced signal processed by the analog front end AFE is transmitted to the analog-to-digital converter ADC. After converting the collected signal into a digital signal, the analog-to-digital converter ADC transmits it to the digital processing module, so that the digital processing module can determine whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0131] Figure 10 Another circuit schematic diagram of the detection device for the touch display panel connected to the touch display panel provided by the embodiment of the present application. Combining Figure 8 and Figure 10 As shown, in the second stage, the first switch 901 and the fourth switch 904 are turned off, and the second switch 902 and the third switch 903 are turned on. The driving signal output by the driving signal output circuit 700 is transmitted to the second touch channel 02 through the third switch 903. Under the coupling effect between the first touch channel 01 and the second touch channel 02, an induced signal will be generated in the first touch channel 01. The induced signal generated in the first touch channel 01 will be transmitted to the induced signal receiving and processing circuit 720 through the second switch 902. Exemplarily, the induced signal receiving and processing circuit 720 may include an analog front end AFE, an analog-to-digital converter ADC, and a digital processing module 900. The analog front end AFE is electrically connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is electrically connected to the digital processing module 900. The analog front end AFE processes the received induced signal, such as amplifying and / or filtering. The induced signal processed by the analog front end AFE is transmitted to the analog-to-digital converter ADC. After converting the collected signal into a digital signal, the analog-to-digital converter ADC transmits it to the digital processing module, so that the digital processing module can determine whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0132] According to some other embodiments of the present application, optionally, the first switching circuit and the second switching circuit may also be provided on the touch display panel. Figure 11 Another structural schematic diagram of the touch display panel provided by the embodiment of the present application. AsFigure 11 As shown, according to some embodiments of the present application, optionally, the touch display panel 20 may include a drive signal output terminal P1, a sensing signal receiving terminal P2, a first switching circuit 801, and a second switching circuit 802. It can be understood that each drive signal output terminal P1 and each sensing signal receiving terminal P2 may be electrically connected to the touch chip 910. The touch chip 910 may be configured to provide a drive signal to the drive signal output terminal P1, receive the sensing signal fed back by the sensing signal receiving terminal P2, and analyze the sensing signal, thereby implementing touch detection.

[0133] The first end of the first switching circuit 801 may be electrically connected to the drive signal output terminal P1, and the second end of the first switching circuit 801 may be respectively electrically connected to the first touch channel 01 and the second touch channel 02. The first end of the second switching circuit 802 may be electrically connected to the sensing signal receiving terminal P2, and the second end of the second switching circuit 802 may be respectively electrically connected to the first touch channel 01 and the second touch channel 02. It should be noted that when the second end of the first switching circuit 801 is connected to the first touch channel 01, the second end of the first switching circuit 801 is disconnected from the second touch channel 02. Similarly, when the second end of the second switching circuit 802 is connected to the first touch channel 01, the second end of the second switching circuit 802 is disconnected from the second touch channel 02.

[0134] Correspondingly, in S101, in the first stage, transmitting a drive signal to the first touch channel and receiving the sensing signal fed back by the second touch channel may specifically include the following steps:

[0135] In the first stage, control the first switching circuit to be connected to the first touch channel and disconnect the electrical connection with the second touch channel; control the second switching circuit to be connected to the second touch channel and disconnect the electrical connection with the first touch channel.

[0136] Specifically, in the first stage, the first switching circuit 801 may be controlled to be connected to the first touch channel 01, while disconnecting the connection between the first switching circuit 801 and the second touch channel 02. In this way, the drive signal transmitted by the drive signal output terminal P1 can be transmitted to the first touch channel 01 through the first switching circuit 801 to provide a drive signal to the first touch channel 01. In the first stage, the second switching circuit 802 may be controlled to be connected to the second touch channel 02, while disconnecting the electrical connection between the second switching circuit 802 and the first touch channel 01. In this way, the sensing signal generated by the second touch channel 02 can be transmitted to the sensing signal receiving terminal P2 through the second switching circuit 802.

[0137] Accordingly, in S102, in the second stage, a driving signal is transmitted to the second touch channel, and the induction signal fed back by the first touch channel is received. Specifically, the following steps may be included:

[0138] In the second stage, control the first switching circuit to be connected to the second touch channel and disconnect the electrical connection with the first touch channel; control the second switching circuit to be connected to the first touch channel and disconnect the electrical connection with the second touch channel.

[0139] Specifically, in the second stage, the first switching circuit 801 can be controlled to be connected to the second touch channel 02 and the connection between the first switching circuit 801 and the first touch channel 01 can be disconnected. In this way, the driving signal transmitted by the driving signal output terminal P1 can be transmitted to the second touch channel 02 through the first switching circuit 801 to provide a driving signal to the second touch channel 02. In the second stage, the second switching circuit 802 can be controlled to be connected to the first touch channel 01 and the electrical connection between the second switching circuit 802 and the second touch channel 02 can be disconnected. In this way, the induction signal generated by the first touch channel 01 can be transmitted to the induction signal receiving terminal P2 through the second switching circuit 802.

[0140] In this way, by switching the first touch channel and the second touch channel through the first switching circuit, the driving signal output by the driving signal output terminal can be provided for the first touch channel or the second touch channel respectively; by switching the first touch channel and the second touch channel through the second switching circuit, the induction signal fed back by the first touch channel or the second touch channel can be transmitted to the induction signal receiving terminal, so that the switching of the driving signal and the induction signal between the first touch channel and the second touch channel can be realized without changing the circuit structure, and the detection of the loop where the first touch channel is located and the detection of the loop where the second touch channel is located can be completed.

[0141] Figure 12 It is a circuit schematic diagram of a touch display panel provided by an embodiment of the present application. As Figure 12 shown, according to some embodiments of the present application, optionally, the first switching circuit 801 may include a first transistor M1 and a second transistor M2 with different conduction types. That is, one of the first transistor M1 and the second transistor M2 is a P-type transistor, and the other is an N-type transistor. The P-type transistor conducts when its gate is at a low level and turns off when its gate is at a high level. The N-type transistor conducts when its gate is at a high level and turns off when its gate is at a low level.

[0142] Among them, the gate of the first transistor M1 is electrically connected to the first control signal terminal S1, the first pole of the first transistor M1 is electrically connected to the drive signal output terminal P1, and the second pole of the first transistor M1 is electrically connected to the first touch channel 01. The gate of the second transistor M2 is electrically connected to the first control signal terminal S1, the first pole of the second transistor M2 is electrically connected to the drive signal output terminal P1, and the second pole of the second transistor M2 is electrically connected to the second touch channel 02.

[0143] Similarly, the second switching circuit 802 may include a third transistor M3 and a fourth transistor M4 with different conduction types. That is, one of the third transistor M3 and the fourth transistor M4 is a P-type transistor, and the other is an N-type transistor.

[0144] Among them, the gate of the third transistor M3 is electrically connected to the second control signal terminal S2, the first pole of the third transistor M3 is electrically connected to the induction signal receiving terminal P2, and the second pole of the third transistor M3 is electrically connected to the first touch channel 01. The gate of the fourth transistor M4 is electrically connected to the second control signal terminal S2, the first pole of the fourth transistor M4 is electrically connected to the induction signal receiving terminal P2, and the second pole of the fourth transistor M4 is electrically connected to the second touch channel 02.

[0145] Taking the first transistor M1 and the third transistor M3 as P-type transistors, and the second transistor M2 and the fourth transistor M4 as N-type transistors as an example, in the first stage, the first control signal terminal S1 can provide a low level, so that the first transistor M1 is turned on and the second transistor M2 is turned off. In this way, the drive signal transmitted by the drive signal output terminal P1 can be transmitted to the first touch channel 01 through the first transistor M1 to provide a drive signal to the first touch channel 01. In the first stage, the second control signal terminal S2 can provide a high level, so that the third transistor M3 is turned off and the fourth transistor M4 is turned on. In this way, the induction signal generated by the second touch channel 02 can be transmitted to the induction signal receiving terminal P2 through the fourth transistor M4.

[0146] Still taking the first transistor M1 and the third transistor M3 as P-type transistors, and the second transistor M2 and the fourth transistor M4 as N-type transistors as an example, in the second stage, the first control signal terminal S1 can provide a high level, so that the first transistor M1 is turned off and the second transistor M2 is turned on. In this way, the drive signal transmitted by the drive signal output terminal P1 can be transmitted to the second touch channel 02 through the second transistor M2 to provide a drive signal to the second touch channel 02. In the second stage, the second control signal terminal S2 can provide a low level, so that the third transistor M3 is turned on and the fourth transistor M4 is turned off. In this way, the induction signal generated by the first touch channel 01 can be transmitted to the induction signal receiving terminal P2 through the third transistor M3.

[0147] In this way, since the conduction types of the first transistor and the second transistor are different, no matter whether the first control signal terminal outputs a low level or a high level, one of the first transistor and the second transistor will always be turned on and the other transistor will be turned off. Similarly, since the conduction types of the third transistor and the fourth transistor are different, no matter whether the second control signal terminal outputs a low level or a high level, one of the third transistor and the fourth transistor will always be turned on and the other transistor will be turned off. Therefore, by only switching the levels output by the first control signal terminal and the second control signal terminal, the switching of the drive signal and the induction signal between the first touch channel and the second touch channel can be realized, and the detection of the loop where the first touch channel is located and the detection of the loop where the second touch channel is located can be completed, which is beneficial to the simplification of the switching circuit and the control method.

[0148] Figure 13 Another schematic flowchart of the detection method for the touch display panel provided by the embodiment of the present application. As Figure 13 shown, according to some embodiments of the present application, optionally, the touch display panel may include a plurality of first touch channels and a plurality of second touch channels. S103 may specifically include the following steps:

[0149] According to the first detection result and the second detection result, determine the number and / or position of the loop where the faulty first touch channel is located and / or the loop where the faulty second touch channel is located.

[0150] Specifically, in S103, according to the second detection result and the first detection result of a plurality of touch display panels in the touch display panel, the number and / or position of the loop where the faulty first touch channel is located, and the number and / or position of the loop where the faulty second touch channel is located can be determined.

[0151] For example, as shown in Table 2 above, it is determined that the loop where the second touch channel 2 is located or the loop where the second touch channel 3 is located fails; as shown in Table 3 above, for example, it is determined that the loop where the first touch channel 2 is located or the loop where the first touch channel 3 is located fails. The positions of the loops where the second touch channel 2 is located, the second touch channel 3 is located, the first touch channel 2 is located, and the first touch channel 3 is located in the touch display panel are known, so the position of the loop where the faulty first touch channel is located and the position of the loop where the faulty second touch channel is located can be determined. Accordingly, the number of loops where the faulty first touch channel is located can also be determined (for example, 2), and the number of loops where the faulty second touch channel is located can also be determined (for example, 2).

[0152] In this way, by determining the number and / or position of the circuits where the first touch channel with a fault occurs and / or the circuits where the second touch channel with a fault occurs, for data analysis, it can provide a reference for the repair of the touch display panel and the improvement of the manufacturing process of other subsequent touch display panels, effectively avoiding open circuits at similar positions in other touch display panels prepared subsequently, and improving the production yield of the touch display panel.

[0153] According to some embodiments of the present application, optionally, the detection method of the touch display panel provided by the embodiments of the present application may further include the following Step 1 and Step 2.

[0154] Step 1: When at least one circuit where the first touch channel is located or at least one circuit where the second touch channel is located has a fault, determine that there is a fault in the circuit where the touch channels of the touch display panel are located. That is, as long as one circuit where the first touch channel is located or the second touch channel is located has a fault, it can be determined that there is a fault in the circuit where the touch channels of the touch display panel are located.

[0155] Step 2: When all the circuits where the first touch channels are located and all the circuits where the second touch channels are located have no faults, determine that there is no fault in the circuit where the touch channels of the touch display panel are located. That is, when all the circuits where the first touch channels are located and all the circuits where the second touch channels are located have no faults, it is determined that there is no fault in the circuit where the touch channels of the touch display panel are located.

[0156] Based on the detection method of the touch display panel provided in the above embodiments, correspondingly, the embodiments of the present application also provide a detection device for a touch display panel. Please refer to the following embodiments.

[0157] Figure 7 It is a circuit schematic diagram of a detection device for a touch display panel connected to the touch display panel provided by the embodiments of the present application. Combining Figure 2 and Figure 7 as shown, the touch display panel 20 may include a first touch channel 01 extending along a first direction X and a second touch channel 02 extending along a second direction Y. Among them, the first direction X intersects with the second direction Y. Touch signal lines are connected to both ends of the first touch channel 01 and both ends of the second touch channel 02.

[0158] The detection device 70 of the touch display panel may include a drive signal output circuit 700, a switching circuit 710, and an induction signal receiving and processing circuit 720. Combining Figure 2 and Figure 7As shown, the drive signal output circuit 700 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the switching circuit 710, and the drive signal output circuit 700 can be used to output drive signals. The induction signal receiving and processing circuit 720 can be electrically connected to the first touch channel 01 and the second touch channel 02 through the switching circuit 710.

[0159] When the drive signal output circuit 700 is connected to the first touch channel 01, that is, when the first touch channel 01 serves as the drive channel TX, the switching induction signal receiving and processing circuit 720 is connected to the second touch channel 02, and the second touch channel 02 serves as the receiving channel RX. When the drive signal output circuit 700 is connected to the second touch channel 02, that is, when the second touch channel 02 serves as the drive channel TX, the switching induction signal receiving and processing circuit 720 is connected to the first touch channel 01, and the first touch channel 01 serves as the receiving channel RX.

[0160] The switching circuit 710 can connect the drive signal output circuit 700 to the first touch channel 01, and the switching circuit 710 can connect the induction signal receiving and processing circuit 720 to the second touch channel 02. The induction signal receiving and processing circuit 720 can determine the first detection result of the touch display panel according to the induction signal fed back by the second touch channel 02.

[0161] The switching circuit 710 can connect the drive signal output circuit 700 to the second touch channel 02, and the switching circuit 710 can connect the induction signal receiving and processing circuit 720 to the first touch channel 01. The induction signal receiving and processing circuit 720 can determine the second detection result of the touch display panel according to the induction signal fed back by the first touch channel 01.

[0162] The induction signal receiving and processing circuit 720 can also be used to determine whether a failure occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result.

[0163] The detection device of the touch display panel according to the embodiment of the present application can switch the first touch channel to the drive channel through the first switching circuit, and can switch the second touch channel to the induction channel through the second switching circuit, so as to accurately detect whether a failure occurs in the loop where the second touch channel is located; through the first switching circuit, the first touch channel can also be switched to the induction channel, and the second touch channel can be switched to the drive channel through the second switching circuit, so as to accurately detect whether a failure occurs in the loop where the first touch channel is located, and thus can accurately detect whether a failure occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the failure of the loop where some touch channels (such as the first touch channel) cannot be detected, and improving the detection accuracy of the touch display panel.

[0164] Continue to refer to Figure 7 To facilitate informing the user of the detection result, the detection device 70 of the touch display panel may further include an information output module 730, and the information output module 730 may be used to output detection information on whether a failure occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located.

[0165] Figure 8 Another circuit schematic diagram of the detection device of the touch display panel connected to the touch display panel provided by the embodiment of the present application. As Figure 8 shown, according to some embodiments of the present application, optionally, the switching circuit 710 may include a first switching circuit 801 and a second switching circuit 802. Combining Figure 2 and Figure 8 shown, the drive signal output circuit 710 may be electrically connected to the first touch channel 01 and the second touch channel 02 respectively through the first switching circuit 801, and the first switching circuit 801 is used to switch the connection between the drive signal output circuit 710 and the first touch channel 01 or the second touch channel 02. The induction signal receiving and processing circuit 720 may be electrically connected to the first touch channel 01 and the second touch channel 02 respectively through the second switching circuit 802, and the second switching circuit 802 may be used to switch the connection between the induction signal receiving and processing circuit 720 and the first touch channel 01 or the second touch channel 02.

[0166] The first switching circuit 801 can connect the drive signal output circuit 700 to the first touch channel 01, and the second switching circuit 802 can connect the induction signal receiving and processing circuit 720 to the second touch channel 02.

[0167] The first switching circuit 801 can connect the drive signal output circuit 700 to the second touch channel 02, and the second switching circuit 802 can connect the induction signal receiving and processing circuit 720 to the first touch channel 01.

[0168] Figure 9 Another circuit schematic diagram of the detection device of the touch display panel connected to the touch display panel provided by the embodiment of the present application. Combining Figure 8 and Figure 9As shown, according to some embodiments of the present application, optionally, the first switching circuit 801 may include a first switch 901 and a third switch 903, and the second switching circuit 802 may include a second switch 902 and a fourth switch 904. The drive signal output circuit 700 may be electrically connected to the first touch channel 01 through the first switch 901, and the first touch channel 01 may be electrically connected to the sensing signal receiving and processing circuit 720 through the second switch 902. The drive signal output circuit 700 may be electrically connected to the second touch channel 02 through the third switch 903, and the second touch channel 02 may be electrically connected to the sensing signal receiving and processing circuit 720 through the fourth switch 904.

[0169] In the first stage, the first switch 901 and the fourth switch 904 are turned on, and the second switch 902 and the third switch 903 are turned off. The drive signal output by the drive signal output circuit 700 is transmitted to the first touch channel 01 through the first switch 901. Under the coupling effect between the first touch channel 01 and the second touch channel 02, an induced signal will be generated in the second touch channel 02. The induced signal generated by the second touch channel 02 will be transmitted to the sensing signal receiving and processing circuit 720 through the fourth switch 904. Exemplarily, the sensing signal receiving and processing circuit 720 may include an analog front end AFE, an analog-to-digital converter ADC, and a digital processing module 900. The analog front end AFE is electrically connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is electrically connected to the digital processing module 900. The analog front end AFE processes the received induced signal, such as amplifying and / or filtering. The induced signal processed by the analog front end AFE is transmitted to the analog-to-digital converter ADC. After the analog-to-digital converter ADC converts the collected signal into a digital signal, it is transmitted to the digital processing module, so that the digital processing module determines whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0170] Figure 10 Another circuit schematic diagram of the detection device for the touch display panel connected to the touch display panel provided by the embodiments of the present application. Combining Figure 8 and Figure 10As shown, in the second stage, the first switch 901 and the fourth switch 904 are turned off, and the second switch 902 and the third switch 903 are turned on. The driving signal output by the driving signal output circuit 700 is transmitted to the second touch channel 02 through the third switch 903. Under the coupling effect between the first touch channel 01 and the second touch channel 02, an induced signal will be generated in the first touch channel 01. The induced signal generated in the first touch channel 01 will be transmitted to the induced signal receiving and processing circuit 720 through the second switch 902. Exemplarily, the induced signal receiving and processing circuit 720 may include an analog front end AFE, an analog-to-digital converter ADC, and a digital processing module 900. The analog front end AFE is electrically connected to the analog-to-digital converter ADC, and the analog-to-digital converter ADC is electrically connected to the digital processing module 900. The analog front end AFE processes the received induced signal, such as amplifying and / or filtering. The induced signal processed by the analog front end AFE is transmitted to the analog-to-digital converter ADC. After the analog-to-digital converter ADC converts the collected signal into a digital signal, it is transmitted to the digital processing module, so that the digital processing module can determine whether a fault occurs in the loop where the touch channel is located according to the converted digital signal.

[0171] According to some embodiments of the present application, optionally, the detection device 70 of the touch display panel may be integrated into the touch chip. That is, the driving signal output circuit 700, the switching circuit 710, the induced signal receiving and processing circuit 720, and the information output module 730 may all be integrated into the touch chip.

[0172] It should be noted that the detection device of the touch display panel can be used to execute the touch display panel detection method provided in the above embodiments, and the touch display panel in the detection device of the touch display panel and the touch display panel in the touch display panel detection method provided in the above embodiments may have the same structure. For the sake of brevity of description, it will not be elaborated here.

[0173] Based on the touch display panel detection method provided in the above embodiments, correspondingly, the embodiments of the present application also provide a display module. Please refer to the following embodiments.

[0174] As Figure 11 shown, the display module provided by the embodiments of the present application may include a touch display panel 20 and a touch chip 910. The touch display panel 20 may include a first touch channel 01 extending along a first direction X and a second touch channel 02 extending along a second direction Y, and the first direction intersects the second direction. The touch chip 910 may be electrically connected to the touch display panel 20 and is used to execute the touch display panel detection method provided in the above embodiments.

[0175] The display module according to the embodiment of the present application can accurately detect whether a fault occurs in the circuit where the second touch channel is located according to the first detection result of the touch display panel in the first stage; according to the second detection result of the touch display panel in the second stage, it can accurately detect whether a fault occurs in the circuit where the first touch channel is located, that is, it can accurately detect whether a fault occurs in the circuits where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect a fault in the circuit where some touch channels (such as the first touch channel) are located, and improving the detection accuracy of the touch display panel.

[0176] Figure 14 It is another schematic structural diagram of the touch display panel provided by the embodiment of the present application. As Figure 14 shown, according to some embodiments of the present application, optionally, the touch display panel 20 may include a driving signal output terminal P1, a sensing signal receiving terminal P2, a first touch signal line L1, a second touch signal line L2, a first switching circuit 801, and a second switching circuit 802. It can be understood that each driving signal output terminal P1 and each sensing signal receiving terminal P2 may be electrically connected to the touch chip 910. The touch chip 910 can be used to provide a driving signal to the driving signal output terminal P1, receive the sensing signal fed back by the sensing signal receiving terminal P2, and analyze the sensing signal, so as to realize touch detection.

[0177] The first end of the first switching circuit 801 may be electrically connected to the driving signal output terminal P1, and the second end of the first switching circuit 801 may be electrically connected to the first touch channel 01 and the second touch channel 02 respectively through the first touch signal line L1. The first end of the second switching circuit 802 may be electrically connected to the sensing signal receiving terminal P2, and the second end of the second switching circuit 802 may be electrically connected to the first touch channel 01 and the second touch channel 02 respectively through the second touch signal line L2.

[0178] By switching the first touch channel and the second touch channel through the first switching circuit, it is possible to respectively provide the driving signal output by the driving signal output terminal for the first touch channel or the second touch channel; by switching the first touch channel and the second touch channel through the second switching circuit, it is possible to transmit the sensing signal fed back by the first touch channel or the second touch channel to the sensing signal receiving terminal, so as to realize the switching of the driving signal and the sensing signal between the first touch channel and the second touch channel without changing the circuit structure, and complete the detection of the circuit where the first touch channel is located and the detection of the circuit where the second touch channel is located.

[0179] It should be noted that the specific switching process of the first switching circuit and the second switching circuit has been described in detail above and will not be elaborated here.

[0180] Figure 15Another structural schematic diagram of the touch display panel provided by the embodiment of the present application. In combination with Figure 15 As shown, optionally, along the first direction X, the second touch signal line L2 may be located on the side of the first touch signal line L1 away from the first touch channel. That is, the second touch signal line L2 is closer to the edge of the touch display panel than the first touch signal line L1.

[0181] Through research by the inventors of the present application, it is found that the open-circuit position of the touch signal line is usually located in the edge area of the touch display panel. Therefore, by setting the second touch signal line connected to the second touch channel outside the first touch signal line, that is, at a position closer to the edge of the touch display panel, the failure of the second touch signal line can be more easily detected in the first stage, and it can be used as a panel edge crack detection function.

[0182] As Figure 12 shown, according to some embodiments of the present application, optionally, the first switching circuit 801 may include a first transistor M1 and a second transistor M2 with different conduction types. That is, one of the first transistor M1 and the second transistor M2 is a P-type transistor, and the other is an N-type transistor. The gate of the P-type transistor is turned on when it is at a low level and turned off when it is at a high level. The gate of the N-type transistor is turned on when it is at a high level and turned off when it is at a low level.

[0183] Among them, the gate of the first transistor M1 is electrically connected to the first control signal terminal S1, the first pole of the first transistor M1 is electrically connected to the drive signal output terminal P1, and the second pole of the first transistor M1 is electrically connected to the first touch channel 01. The gate of the second transistor M2 is electrically connected to the first control signal terminal S1, the first pole of the second transistor M2 is electrically connected to the drive signal output terminal P1, and the second pole of the second transistor M2 is electrically connected to the second touch channel 02.

[0184] Similarly, the second switching circuit 802 may include a third transistor M3 and a fourth transistor M4 with different conduction types. That is, one of the third transistor M3 and the fourth transistor M4 is a P-type transistor, and the other is an N-type transistor.

[0185] Among them, the gate of the third transistor M3 is electrically connected to the second control signal terminal S2, the first pole of the third transistor M3 is electrically connected to the induction signal receiving terminal P2, and the second pole of the third transistor M3 is electrically connected to the first touch channel 01. The gate of the fourth transistor M4 is electrically connected to the second control signal terminal S2, the first pole of the fourth transistor M4 is electrically connected to the induction signal receiving terminal P2, and the second pole of the fourth transistor M4 is electrically connected to the second touch channel 02.

[0186] It should be noted that the control processes of the first transistor M1, the second transistor M2, the third transistor M3, and the fourth transistor M4 have been described in detail above and will not be elaborated here.

[0187] In this way, since the conduction types of the first transistor and the second transistor are different, no matter whether the first control signal terminal outputs a low level or a high level, one of the first transistor and the second transistor will always be turned on and the other transistor will be turned off. Similarly, since the conduction types of the third transistor and the fourth transistor are different, no matter whether the second control signal terminal outputs a low level or a high level, one of the third transistor and the fourth transistor will always be turned on and the other transistor will be turned off. Therefore, by only switching the levels output by the first control signal terminal and the second control signal terminal, it is possible to achieve the switching of the drive signal and the induction signal between the first touch channel and the second touch channel, complete the detection of the loop where the first touch channel is located and the detection of the loop where the second touch channel is located, which is beneficial to the simplification of the switching circuit and the control method.

[0188] Based on the touch display panel detection method provided in the above embodiments, correspondingly, the embodiments of the present application further provide a touch display panel detection system. The touch display panel includes a first touch channel extending along a first direction and a second touch channel extending along a second direction, and the first direction intersects the second direction. As Figure 16 shown, the touch display panel detection system 1200 provided by the embodiments of the present application includes:

[0189] A first detection module 1201, configured to transmit a drive signal to the first touch channel, receive an induction signal fed back by the second touch channel, and determine a first detection result of the touch display panel according to the induction signal fed back by the second touch channel during the first stage;

[0190] A second detection module 1202, configured to transmit a drive signal to the second touch channel, receive an induction signal fed back by the first touch channel, and determine a second detection result of the touch display panel according to the induction signal fed back by the first touch channel during the second stage;

[0191] A determination module 1203, configured to determine whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result.

[0192] The detection system of the touch display panel according to the embodiment of the present application can accurately detect whether a fault occurs in the loop where the second touch channel is located according to the first detection result of the touch display panel in the first stage; according to the second detection result of the touch display panel in the second stage, it can accurately detect whether a fault occurs in the loop where the first touch channel is located, that is, it can accurately detect whether a fault occurs in the loops where all touch channels of the touch display panel are located, avoiding misjudgment caused by the inability to detect faults in the loops of some touch channels (such as the first touch channel), and improving the detection accuracy of the touch display panel.

[0193] Figure 16 Each module / unit in the system shown has the function of implementing Figure 3 each step in, and can achieve its corresponding technical effects. For the sake of concise description, it will not be elaborated here.

[0194] Based on the touch display panel detection method provided in the above embodiment, correspondingly, the present application also provides a specific implementation manner of an electronic device. Please refer to the following embodiments.

[0195] Figure 17 The hardware structure diagram of the electronic device provided by the embodiment of the present application is shown.

[0196] The electronic device may include a processor 1301 and a memory 1302 storing computer program instructions.

[0197] Specifically, the above-mentioned processor 1301 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0198] The memory 1302 may include a mass storage for data or instructions. By way of example and not limitation, the memory 1302 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disc, a magneto-optical disc, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In one example, the memory 1302 may include removable or non-removable (or fixed) media, or the memory 1302 is a non-volatile solid-state memory. The memory 1302 may be inside or outside the integrated gateway disaster recovery device.

[0199] In one example, the memory 1302 may be a Read Only Memory (ROM). In one example, the ROM may be a mask-programmed ROM, a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), an Electrically Alterable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0200] The memory 1302 may include a read only memory (ROM), a random access memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of the present application.

[0201] The processor 1301 reads and executes the computer program instructions stored in the memory 1302 to implement Figure 3 the methods / steps S101 to S103 in the illustrated embodiment, and achieve Figure 3 the corresponding technical effects achieved by the methods / steps executed by the illustrated example. For the sake of brevity, the description is not repeated here.

[0202] In one example, the electronic device may further include a communication interface 1303 and a bus 1310. Among them, as Figure 17 shown, the processor 1301, the memory 1302, and the communication interface 1303 are connected through the bus 1310 and complete communication with each other.

[0203] The communication interface 1303 is mainly used to implement communication between various modules, devices, units, and / or devices in the embodiments of the present application.

[0204] The bus 1310 includes hardware, software, or both, and couples components of the electronic device to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, the bus 1310 may include one or more buses. Although embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.

[0205] In addition, in combination with the detection method of the touch display panel in the above embodiments, embodiments of the present application may provide a computer-readable storage medium for implementation. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, any one of the detection methods of the touch display panel in the above embodiments is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as electronic circuits, semiconductor memory devices, ROMs, random access memories, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical discs, and hard disks.

[0206] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, and so on. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0207] It should also be noted that in the exemplary embodiments mentioned in the present application, some methods or systems are described based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, can be different from the order in the embodiments, or several steps can be executed simultaneously.

[0208] Aspects of the present application have been described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each block in the flowcharts and / or block diagrams, and the combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It should also be understood that each block in the block diagrams and / or flowcharts, and the combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0209] The above are only specific embodiments of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A detection method for a touch display panel, characterized in that, the touch display panel includes a first touch channel extending in a first direction and a second touch channel extending in a second direction, the first direction intersects the second direction, touch signal lines are connected to both ends of the first touch channel and both ends of the second touch channel, and the method includes: In a first stage, a drive signal is transmitted to the first touch channel, an induction signal fed back by the second touch channel is received, and a first detection result of the touch display panel is determined according to the induction signal fed back by the second touch channel; In a second stage, a drive signal is transmitted to the second touch channel, an induction signal fed back by the first touch channel is received, and a second detection result of the touch display panel is determined according to the induction signal fed back by the first touch channel; According to the first detection result and the second detection result, it is determined whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located; wherein, the touch display panel is electrically connected to a detection device of the touch display panel, and the detection device of the touch display panel includes a drive signal output circuit, a switching circuit, and an induction signal receiving and processing circuit; the drive signal output circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit, and the drive signal output circuit is used to output a drive signal; the induction signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit; in the first stage, transmitting a drive signal to the first touch channel and receiving the induction signal fed back by the second touch channel specifically includes: In the first stage, control the switching circuit to switch to connect the drive signal output circuit to the first touch channel, and control the switching circuit to switch to connect the induction signal receiving and processing circuit to the second touch channel.

2. The method according to claim 1, characterized in that, determining the first detection result of the touch display panel according to the induction signal fed back by the second touch channel specifically includes: converting the induction signal fed back by the second touch channel into a first digital signal; when the difference between the value of the first digital signal and a preset first target value is greater than a preset first threshold, it is determined that a fault occurs in the loop where the second touch channel is located.

3. The method according to claim 2, characterized in that, the first digital signal includes M values corresponding one-to-one to M of the first touch channels, M is an integer greater than 1; when the difference between the value of the first digital signal and a preset first target value is greater than a preset first threshold, determining that a fault occurs in the loop where the second touch channel is located specifically includes: when the difference between at least two of the M values and the first target value is greater than the preset first threshold, it is determined that a fault occurs in the loop where the second touch channel is located.

4. The method according to claim 1, characterized in that, Determining a second detection result of the touch display panel according to the induction signal fed back by the first touch channel specifically includes: Converting the induction signal fed back by the first touch channel into a second digital signal; When the difference between the value of the second digital signal and a preset second target value is greater than a preset second threshold, determining that a fault has occurred in the loop where the first touch channel is located.

5. The method according to claim 4, wherein, the second digital signal includes N values corresponding one-to-one to N second touch channels, and N is an integer greater than 1; when the difference between the value of the second digital signal and a preset second target value is greater than a preset second threshold, determining that a fault has occurred in the loop where the first touch channel is located specifically includes: When the difference between at least two of the N values and the second target value is greater than the preset second threshold, determining that a fault has occurred in the loop where the first touch channel is located.

6. The method according to claim 5, wherein, the switching circuit includes a first switching circuit and a second switching circuit, the first switching circuit includes a first switch and a third switch, and the second switching circuit includes a second switch and a fourth switch; the drive signal output circuit is electrically connected to the first touch channel through the first switch, and the drive signal output circuit is electrically connected to the second touch channel through the third switch; the first touch channel is electrically connected to the induction signal receiving and processing circuit through the second switch, and the second touch channel is electrically connected to the induction signal receiving and processing circuit through the fourth switch; in the first stage, transmitting a drive signal to the first touch channel and receiving the induction signal fed back by the second touch channel specifically includes: the first switch and the fourth switch are turned on, the second switch and the third switch are turned off, the drive signal output by the drive signal output circuit is transmitted to the first touch channel through the first switch, and the induction signal generated by the second touch channel is transmitted to the induction signal receiving and processing circuit through the fourth switch.

7. The method according to claim 5, wherein, in the second stage, transmitting a drive signal to the second touch channel and receiving the induction signal fed back by the first touch channel specifically includes: In the second stage, controlling the switching circuit to switch to connect the drive signal output circuit to the second touch channel, and controlling the switching circuit to switch to connect the induction signal receiving and processing circuit to the first touch channel.

8. The method according to claim 6, wherein, in the second stage, transmitting a drive signal to the second touch channel and receiving the induction signal fed back by the first touch channel specifically includes: In the second stage, the first switch and the fourth switch are turned off, the second switch and the third switch are turned on, the driving signal output by the driving signal output circuit is transmitted to the second touch channel through the third switch, and the induction signal generated by the first touch channel is transmitted to the induction signal receiving and processing circuit through the second switch.

9. The method according to claim 1, wherein, determining whether a fault occurs in the first touch channel and / or the second touch channel according to the first detection result and the second detection result includes: determining the number and / or position of the loop where the first touch channel with a fault is located and / or the loop where the second touch channel with a fault is located according to the first detection result and the second detection result.

10. The method according to claim 9, wherein, the method further includes: when a fault occurs in at least one loop where the first touch channel is located or at least one loop where the second touch channel is located, determining that a fault exists in the loop where the touch channels of the touch display panel are located; when no fault occurs in all the loops where the first touch channels are located and all the loops where the second touch channels are located, determining that no fault exists in the loop where the touch channels of the touch display panel are located.

11. A detection device for a touch display panel, wherein, the touch display panel includes a first touch channel extending in a first direction and a second touch channel extending in a second direction, the first direction intersects the second direction, and touch signal lines are connected to both ends of the first touch channel and both ends of the second touch channel; the detection device includes: a driving signal output circuit, a switching circuit, an induction signal receiving and processing circuit, and an information output module; the driving signal output circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit, and the driving signal output circuit is used for outputting a driving signal; the induction signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel through the switching circuit; the switching circuit can connect the driving signal output circuit to the first touch channel, and the induction signal receiving and processing circuit is connected to the second touch channel. The induction signal receiving and processing circuit determines the first detection result of the touch display panel according to the induction signal fed back by the second touch channel; the switching circuit can connect the driving signal output circuit to the second touch channel, and the induction signal receiving and processing circuit is connected to the first touch channel. The induction signal receiving and processing circuit determines the second detection result of the touch display panel according to the induction signal fed back by the first touch channel; the induction signal receiving and processing circuit is further used for determining whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located according to the first detection result and the second detection result. The information output module is configured to output detection information on whether a fault occurs in the loop where the first touch channel is located and / or the loop where the second touch channel is located; Wherein, the touch display panel is electrically connected to a detection device of the touch display panel.

12. The detection device of the touch display panel according to claim 11, Characterized in that The switching circuit includes a first switching circuit and a second switching circuit. The drive signal output circuit is electrically connected to the first touch channel and the second touch channel respectively through the first switching circuit. The first switching circuit is configured to switch the connection between the drive signal output circuit and the first touch channel or the second touch channel; The induction signal receiving and processing circuit is electrically connected to the first touch channel and the second touch channel respectively through the second switching circuit. The second switching circuit is configured to switch the connection between the induction signal receiving and processing circuit and the first touch channel or the second touch channel.

13. The detection device of the touch display panel according to claim 12, Characterized in that The first switching circuit includes a first switch and a third switch, and the second switching circuit includes a second switch and a fourth switch; The drive signal output circuit is electrically connected to the first touch channel through the first switch, and the drive signal output circuit is electrically connected to the second touch channel through the third switch; The first touch channel is electrically connected to the induction signal receiving and processing circuit through the second switch, and the second touch channel is electrically connected to the induction signal receiving and processing circuit through the fourth switch.

14. The detection device of the touch display panel according to claim 11, Characterized in that The detection device of the touch display panel is integrated in a touch chip.

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