Touch display module, display device, fault detection method and storage medium

Abstract

This application relates to a touch display module, a display device, an anomaly detection method, and a storage medium. The touch display module includes a touch chip, a display panel, and at least one filter capacitor. The touch chip includes a processing circuit and a power module, with the processing circuit connected to the power module. The display panel is connected to the processing circuit via a receiving channel and a transmitting channel. The first terminal of each filter capacitor is connected to the power module, and the second terminal of each filter capacitor is connected to a target channel, which is connected to a common ground terminal. The target channel is one of the receiving channel and the transmitting channel. In detection mode, the processing module controls the disconnection of the target channel from the common ground terminal and determines whether the filtering circuit is abnormal based on the electrical signals of each filter capacitor and a reference capacitance. Using the above-described touch display module, it is possible to detect whether the filter capacitors in the filtering circuit are abnormal.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a touch display module, display device, anomaly detection method, and storage medium. Background Technology

[0002] With the development of touch display technology, touch panels have been widely used in various fields such as smart wearables, smartphones, tablets / laptops, and touch chips are the core components for realizing touch functions.

[0003] To achieve complex touch functions, touch chips have built-in power modules that can output different voltage levels to meet the chip's operational requirements. To reduce interference signals, the power module is often connected to at least one filter capacitor, which is a crucial component of the touch chip's peripheral circuitry. However, since these filter capacitors are primarily used for power filtering, conventional touch testing methods cannot detect abnormalities such as missing or poorly soldered filter capacitors on flexible printed circuit boards (FPCs) or printed circuit boards (PCBs). Summary of the Invention

[0004] Therefore, it is necessary to provide a touch display module, display device, anomaly detection method, and storage medium that can detect abnormalities such as missing or poorly soldered filter capacitors, in order to address the above-mentioned technical problems.

[0005] A touch display module, comprising:

[0006] The touch chip includes a processing circuit and a power module, wherein the processing circuit is connected to the power module;

[0007] The display panel is connected to the processing circuit via a receiving channel and a transmitting channel;

[0008] At least one filter capacitor, the first end of each filter capacitor is connected to the power module, the second end of each filter capacitor is connected to the target channel, the target channel is connected to the common ground terminal, and the target channel is one of the receiving channel and the transmitting channel;

[0009] In the detection mode, the processing circuit is used to control the disconnection of the target channel from the common ground terminal, control the power module to charge each of the filter capacitors, obtain the electrical signal of each of the filter capacitors through the target channel, and determine whether the filter capacitors are abnormal based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of each of the filter capacitors.

[0010] The aforementioned touch display module connects the second ends of all filter capacitors together and then connects them to the target channel of the touch chip. Since the target channel is connected to the common ground, when the touch chip is working normally, the second ends of all filter capacitors are also connected to the common ground, thus ensuring normal power filtering. When it is necessary to test the filter capacitors, the touch display module enters the detection mode and disconnects the target channel from the common ground. The target channel can collect the electrical signals of each filter capacitor. The processing circuit determines whether there are abnormal filter capacitors based on the electrical signals of each filter capacitor and the reference capacitance, thereby realizing the abnormal detection of the filter capacitors.

[0011] In one embodiment, in the detection mode, the processing circuit is further configured to determine that each of the filter capacitors is abnormal when the electrical signal is not acquired.

[0012] In one embodiment, in the detection mode, the processing circuit is further configured to, when the electrical signal is acquired, obtain the total detection capacitance corresponding to each of the filter capacitors based on each of the electrical signals, and determine that there is an abnormal filter capacitor when the total detection capacitance is different from the reference capacitance.

[0013] In one embodiment, when exiting the detection mode, the processing module is also configured to control the target channel to be connected to the common ground.

[0014] In one embodiment, the processing circuit includes a processing module and a signal conversion module. The processing module is connected to the signal conversion module and the power supply module, respectively. The signal conversion module is connected to the display panel through the receiving channel and the transmitting channel.

[0015] In one embodiment, the signal conversion module includes an analog front-end module and an analog-to-digital conversion module. The analog front-end module is connected to the receiving channel and the transmitting channel, respectively. The analog front-end module is used to transmit driving signals to the display panel through the transmitting channel and to receive capacitance change signals of each sensing node fed back by the receiving channel. The analog-to-digital conversion module is connected to the analog front-end module and the processing module, respectively, and is used to convert the analog signals sent by the analog front-end module into digital signals and transmit them to the processing module.

[0016] Secondly, this application provides a display device, including the touch display module as described above.

[0017] The aforementioned display device includes the aforementioned touch display module. In the touch display module, the second ends of all the filter capacitors are connected together and then connected to the target channel of the touch chip. Since the target channel is connected to the common ground terminal, when the touch chip is working normally, the second ends of all the filter capacitors are also equivalent to being connected to the common ground terminal, thereby ensuring normal power filtering. When it is necessary to test the filter capacitors, after the touch display module enters the detection mode, the connection between the target channel and the common ground terminal is disconnected. The target channel can collect the electrical signals of each filter capacitor. The processing circuit determines whether there are abnormal filter capacitors based on the electrical signals of each filter capacitor and the reference capacitance, thereby realizing the abnormal detection of the filter capacitors. Thus, the display device can realize the abnormal detection of the filter capacitors.

[0018] Thirdly, this application provides an anomaly detection method applied to a touch display module; the anomaly detection method includes:

[0019] When the current operating mode is detection mode, the connection between the target channel and the common ground is disconnected, and the power module is controlled to charge each filter capacitor. The target channel is one of the receiving channel and the transmitting channel.

[0020] Acquire the electrical signals of each of the filter capacitors collected through the target channel;

[0021] Whether a filter capacitor is abnormal is determined based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of all filter capacitors.

[0022] In one embodiment, the control power module charges each filter capacitor, including:

[0023] Based on the capacitance of each filter capacitor, the power module outputs electrical signals of different frequencies to the corresponding filter capacitors to charge them.

[0024] In one embodiment, determining whether a filter capacitor is abnormal based on its electrical signal and a reference capacitance includes:

[0025] The total detection capacitance corresponding to each filter capacitor is obtained based on the electrical signal of each filter capacitor. When the total detection capacitance is different from the reference capacitance, it is determined that there is an abnormal filter capacitor.

[0026] In one embodiment, the method further includes:

[0027] When exiting the detection mode, control the target channel to connect to the public ground.

[0028] In one embodiment, the method further includes:

[0029] If no electrical signal is obtained from each of the filter capacitors, it is determined that each of the filter capacitors is abnormal.

[0030] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0031] The above-mentioned anomaly detection method and computer-readable storage medium display device, after the touch display module enters the detection mode, control the disconnection of the target channel from the common ground terminal, and control the power module to charge each filter capacitor, so that the target channel can collect the electrical signals of each filter capacitor, and then determine whether there is an abnormal filter capacitor based on the electrical signals of each filter capacitor and the reference capacitance, thereby realizing the anomaly detection of the filter capacitor. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an existing touch display module;

[0034] Figures 2 to 4 These are schematic diagrams illustrating the structure of the touch display module in different embodiments of this application;

[0035] Figure 5 This is a flowchart illustrating an anomaly detection method in one embodiment of this application;

[0036] Figure 6 This is a flowchart illustrating an anomaly detection method in another embodiment of this application. Detailed Implementation

[0037] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] In the following embodiments, when a layer, region, or element is “connected,” it can be interpreted as the layer, region, or element being connected not only directly but also through other constituent elements placed therebetween. For example, when a layer, region, element, etc., is described as being connected or electrically connected, the layer, region, element, etc., can not only be directly connected or directly electrically connected, but can also be connected or electrically connected through another layer, region, element, etc., placed therebetween.

[0041] In the following text, although terms such as “first” and “second” may be used to describe various components, these components are not necessarily limited to the terms above. The terms above are only used to distinguish one component from another. It will also be understood that expressions used in the singular form include plural expressions, unless the singular form has a distinctly different meaning in the context.

[0042] As used in the application documents, the term "and / or" includes any and all combinations of one or more of the relevant listed items. It should also be understood that the terms "comprising / including" or "having," etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0043] Electronic or electrical devices and / or any other related devices or components (e.g., display devices including a display panel and a display panel driver, wherein the display panel driver further includes a drive controller, a gate driver, a gamma reference voltage generator, a data driver, and a transmit driver) according to embodiments of the concepts described herein can be implemented using any suitable hardware, firmware (e.g., application-specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, various components of these devices may be formed on an integrated circuit (IC) chip or on a separate IC chip. Additionally, various components of these devices may be implemented on a flexible printed circuit film, a tape-on-a-package (TCP), a printed circuit board (PCB), or formed on a substrate. Furthermore, various components of these devices may be processes or threads running on one or more processors in one or more computing devices to execute computer program instructions and interact with other system components to perform the various functions described herein. Computer program instructions are stored in memory, which may be implemented in a computing device using standard storage devices such as random access memory (RAM). Computer program instructions may also be stored in other non-transitory computer-readable media such as CD-ROMs, flash drives, etc. Furthermore, those skilled in the art will recognize that the functions of various computing devices may be combined or integrated into a single computing device, or the functions of a particular computing device may be distributed across one or more other computing devices, without departing from the spirit and scope of the exemplary embodiments of the present application.

[0044] While exemplary embodiments of the display module and the display device including the display module have been specifically described herein, many modifications and variations will be apparent to those skilled in the art. Therefore, it will be understood that the display module and the display device including the display module, constructed according to the principles of this application, may be implemented in ways other than those specifically described herein. This application is also defined in the claims and their equivalents.

[0045] As described in the background section, with the development of touch display technology, touch panels have been widely used in various fields such as smart wearables, smartphones, tablets / laptops, and touch chips are the core components for realizing touch functions.

[0046] To achieve complex touch functions, such as Figure 1 As shown, the touch chip 11 is connected to the display panel 12 via a transmit channel TX and a receive channel RX. The touch chip 11 has a built-in processing circuit 111 and a power module 112. The processing circuit 111 can control the power module 112 to output different levels to meet the chip's operating requirements. To reduce interference signals, the power module 112 is often connected to at least one filter capacitor, for example... Figure 1In the circuit, capacitors C1, C2, and C3 are connected to the power supply pins of the touch chip at one end and to ground at the other end, thus achieving power filtering. However, since these filter capacitors are mainly used for power filtering, if abnormalities such as missing or poorly soldered filter capacitors appear on the flexible printed circuit (FPC) or printed circuit board (PCB), conventional touch testing cannot detect such abnormalities.

[0047] For the reasons mentioned above, in one embodiment, this application provides a touch display module, such as... Figure 2 As shown, the touch display module includes: a touch chip 21, a display panel 22, and at least one filter capacitor. The touch chip 21 includes a processing circuit 211 and a power module 212, with the processing circuit 211 connected to the power module 212. The display panel 22 is connected to the processing circuit 211 via a receiving channel RX and a transmitting channel TX. The first terminal of each filter capacitor is connected to the power module 212, and the second terminal of each filter capacitor is connected to a target channel, which is connected to a common ground terminal. The target channel is one of the receiving channel RX and the transmitting channel TX.

[0048] Figure 2 In the configuration, there are three filter capacitors: C1, C2, and C3. However... Figure 2 This is just one example of this application; therefore, the number of filter capacitors can be more or less, and no specific limitation is made here.

[0049] In the detection mode, the processing circuit 211 is used to control the disconnection of the target channel from the common ground terminal, control the power module 212 to charge each of the filter capacitors, obtain the electrical signal of each of the filter capacitors through the target channel, and determine whether the filter capacitors are abnormal based on the electrical signal and the reference capacitance, wherein the reference capacitance is the total capacitance of each of the filter capacitors.

[0050] The target channel can be connected to a common ground terminal via a switching unit 23. The control terminal of the switching unit 23 is connected to the processing circuit 211, so that the processing circuit 211 can control whether the target channel is connected to the common ground terminal by controlling the on / off state of the switching unit 23. The switching unit 23 can be a switching transistor.

[0051] In this application, human skin acts as a destructive electrolyte, equivalent to a conductive electrode. A dielectric layer separates the plates in a simple parallel-plate capacitor. Most of the energy in this system is concentrated between the capacitor plates, with a small amount spilling out to areas outside the plates. When a finger is placed on the capacitive touch system (the screen of display panel 22), it is placed in the energy spillover area (called the edge field), increasing the conductive surface area of ​​the capacitive system. Based on this, the transmitting channel TX provides a drive signal to the display panel 22, and the receiving channel RX receives the electrical signal sent by the display panel 22. When a finger is placed on the capacitive touch system, the electrical signal sent by the display panel 22 changes, thereby detecting the touch / no-touch state. The touch display module can employ mutual capacitance sensing technology or self-capacitance sensing technology. When using mutual capacitance sensing technology, the transmitting channel TX and the receiving channel RX are different channels; when using self-capacitance sensing technology, the transmitting channel TX and the receiving channel RX are the same channel.

[0052] Optionally, when exiting the detection mode, the processing circuit is also used to control the target channel to be connected to the common ground terminal.

[0053] In applications, to reduce interference signals, the power module 212 is often connected to a filter capacitor, which is connected to a common ground terminal to achieve power filtering. In this embodiment, the first terminal of each filter capacitor is connected to the power module 212, and the second terminal of each filter capacitor is connected to the target channel. When the touch chip 21 is working normally, the target channel is connected to the common ground terminal, and the second terminals of all filter capacitors are also connected to the common ground terminal. Therefore, the touch display module in this embodiment can achieve power filtering.

[0054] When it is necessary to detect whether the filter capacitors are abnormal, the touch display module can be controlled to enter the detection mode. In the detection mode, the processing circuit 211 controls the disconnection of the target channel from the common ground terminal and controls the power module 212 to charge each of the filter capacitors. The target channel collects the electrical signals of each of the filter capacitors. The processing circuit 211 can determine whether each filter capacitor is abnormal based on the electrical signals of each filter capacitor and the reference capacitance, thereby realizing the detection of each filter capacitor. It can be understood that the above detection process does not require additional detection tools. It only requires controlling the touch display module to change its working mode to detect whether there are abnormal filter capacitors. The operation is simple and convenient.

[0055] The aforementioned touch display module connects the second ends of all filter capacitors together and then connects them to the target channel of the touch chip 21. Since the target channel is connected to the common ground, when the touch chip 21 is working normally, the second ends of all filter capacitors are also connected to the common ground, thus ensuring normal power filtering. When it is necessary to test the filter capacitors, the touch display module enters the detection mode, disconnects the target channel from the common ground, and the target channel collects the discharge signals of each filter capacitor and transmits the discharge data to the processing circuit 211. The processing circuit 211 determines whether there are abnormal filter capacitors based on the discharge data and the reference capacitance, thereby realizing the abnormal detection of the filter capacitors.

[0056] In one embodiment, in the detection mode, the processing circuit 211 is further configured to determine that each of the filter capacitors is abnormal when the electrical signal is not acquired.

[0057] It is understandable that if all filter capacitors are malfunctioning, the target channel cannot acquire the electrical signals of the filter capacitors, and therefore the processing circuit 211 cannot receive the electrical signals of each filter capacitor. Thus, when the processing circuit 211 does not acquire the electrical signals of the filter capacitors, it can be determined that all of the filter capacitors are malfunctioning. Furthermore, it can be assumed that the filter capacitors have experienced abnormalities such as missing components or poor soldering.

[0058] In one embodiment, in the detection mode, the processing circuit 211 is further configured to, when the electrical signal is acquired, obtain the total detection capacitance corresponding to each of the filter capacitors based on each of the electrical signals, and determine that there is an abnormal filter capacitor when the total detection capacitance is different from the reference capacitance.

[0059] It is understandable that if all capacitors are normal, the target channel can acquire the electrical signals of all filter capacitors. The total detected capacitance obtained by the processing circuit 211 based on the electrical signals of each filter capacitor should theoretically be the total capacitance of all the filter capacitors, that is, it should be equal to the reference capacitance. Based on this, if the total detected capacitance is different from the reference capacitance, it can be considered that there is an abnormal filter capacitor, and thus it can be determined that there is an abnormal filter capacitor.

[0060] In one embodiment, such as Figure 3 As shown, the processing circuit 211 includes a processing module 2111 and a signal conversion module 2112. The processing module 2111 is connected to the signal conversion module 2112 and the power supply module 212, respectively. The signal conversion module 2112 is connected to the display panel 22 through the receiving channel RX and the transmitting channel TX.

[0061] In detection mode, the processing module 2111 controls the disconnection of the target channel from the common ground terminal and controls the power module 212 to charge each of the filter capacitors. The signal conversion module 2112 acquires the electrical signals of each filter capacitor collected through the target channel, and amplifies and performs analog-to-digital conversion on the acquired electrical signals of each filter capacitor to facilitate identification by the processing module 2111. The processing module 2111 receives the converted electrical signals of each filter capacitor and determines whether the filter capacitor is abnormal based on the electrical signals of each filter capacitor and a reference capacitance.

[0062] In normal mode, the processing module 2111 provides a drive signal to the display panel 22 via the signal conversion module 2112 and the transmission channel TX. The receiving channel RX receives the electrical signal sent by the display panel 22 and sends it to the processing module 2111 via the signal conversion module 2112. Since the electrical signal sent by the display panel 22 changes when a finger is placed on the capacitive touch system, the processing module 2111 can detect the touch / no-touch state.

[0063] In one embodiment, such as Figure 4 As shown, the signal conversion module 2112 includes an analog front-end unit 21121 and an analog-to-digital converter 21122. The analog front-end unit 21121 is connected to the receiving channel RX and the transmitting channel TX, respectively. The analog front-end unit 21121 is used to transmit driving signals to the display panel 22 through the transmitting channel TX and to receive capacitance change signals of each sensing node fed back by the receiving channel RX. The analog-to-digital converter 21122 is connected to the analog front-end unit 21121 and the processing module 2111, respectively, and is used to convert the analog signals transmitted by the analog front-end unit 21121 into digital signals and transmit them to the processing module 2111.

[0064] The analog front-end unit 21121 may include a filtering unit and an amplification unit, etc., for filtering and amplifying the analog signal. The analog-to-digital conversion unit 21122 is used to convert the analog signal processed by the analog front-end unit 21121 into a data signal and send it to the processing module 2111 for recognition and processing. The data signal sent by the processing module 2111 is converted by the analog-to-digital conversion unit 21122 and then sent to the analog front-end unit 21121 for further processing before being sent to the display panel 22. For example, under the control of the processing module 2111, the analog front-end unit 21121 sends a drive signal to the display panel 22 via the transmission channel TX and receives the electrical signal fed back by the display panel 22 via the receiving channel RX. When a finger is placed on the capacitive touch system, the electrical signal sent by the display panel 22 will change, thereby realizing the detection of touch / no-touch state.

[0065] Based on the same inventive concept, in one embodiment, this application also provides a display device, including the touch display module as described above. It is understood that the display device in this application can be any product or component with display function, such as an OLED display device, a QLED display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a wearable device, or an IoT device; the embodiments disclosed in this application do not limit this.

[0066] The aforementioned display device includes the aforementioned touch display module. In the touch display module, the second ends of all the filter capacitors are connected together and then connected to the target channel of the touch chip 21. Since the target channel is connected to the common ground terminal, when the touch chip 21 is working normally, the second ends of all the filter capacitors are also connected to the common ground terminal, thereby ensuring normal power filtering. When it is necessary to test the filter capacitors, after the touch display module enters the detection mode, the target channel collects the electrical signals of each filter capacitor. The processing circuit 211 determines whether there are abnormal filter capacitors based on the electrical signals of each filter capacitor and the reference capacitance, thereby realizing the abnormal detection of the filter capacitors. Thus, the display device can realize the abnormal detection of the filter capacitors.

[0067] In one embodiment, such as Figure 5 As shown, this application also provides an anomaly detection method applied to a touch display module; the anomaly detection method includes:

[0068] S501: When the current operating mode is detection mode, control the disconnection of the target channel from the common ground terminal, and control the power module 212 to charge each filter capacitor. The target channel is one of the receiving channel RX and the transmitting channel TX.

[0069] The current operating modes include normal mode and detection mode. Detection mode is used to detect the presence of abnormal filter capacitors. In applications, routine touch tests can be performed before entering detection mode, such as open / short circuit tests on the touch chip 21, to mitigate interference caused by other abnormalities.

[0070] S502: Acquire the electrical signals of each of the filter capacitors collected by the target channel.

[0071] It is understood that by disconnecting the target channel from the equipotential and controlling the power module 212 to charge each of the filter capacitors, the target channel can acquire the electrical signals of each filter capacitor.

[0072] S503: Determine whether the filter capacitor is abnormal based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of all filter capacitors.

[0073] In this embodiment, the touch display module can be any of the touch display modules described in the above-described scheme.

[0074] Optionally, determining whether a filter capacitor is abnormal based on its electrical signal and reference capacitance includes: obtaining the total detection capacitance corresponding to each filter capacitor based on its electrical signal; and determining that an abnormal filter capacitor exists when the total detection capacitance differs from the reference capacitance.

[0075] It is understandable that if all capacitors are normal, the target channel can acquire the electrical signals of all filter capacitors. The total detected capacitance obtained from the electrical signals of each filter capacitor should theoretically be the total capacitance of all the filter capacitors, i.e., equal to the reference capacitance. Based on this, if the total detected capacitance differs from the reference capacitance, it can be considered that a filter capacitor is abnormal, and thus an abnormal filter capacitor can be determined.

[0076] Optionally, when exiting the detection mode, the target channel is controlled to be connected to the common ground.

[0077] In applications, to reduce interference signals, the power supply module is often connected to a filter capacitor, which is connected to a common ground terminal to achieve power filtering. In this embodiment, the first terminal of each filter capacitor is connected to the power supply module, and the second terminal of each filter capacitor is connected to the target channel. When the touch chip is working normally, the target channel is connected to a common ground terminal, and the second terminals of all filter capacitors are also connected to the common ground terminal. Therefore, the touch display module in this embodiment can achieve power filtering.

[0078] The above-mentioned anomaly detection method, after the touch display module enters the detection mode, controls the disconnection of the target channel from the common ground terminal and controls the power module to charge each filter capacitor, so that the target channel can collect the electrical signals of each filter capacitor. Then, based on the electrical signals of each filter capacitor and the reference capacitance, it can be determined whether there is an abnormality in the filter capacitor, thereby realizing the anomaly detection of the filter capacitor.

[0079] In one embodiment, controlling the power module to charge each of the filter capacitors includes the step of: controlling the power module to output electrical signals of different frequencies to the corresponding filter capacitors according to the capacitance of each filter capacitor, so as to charge each filter capacitor.

[0080] The power module outputs different frequency waveforms to charge the filter capacitors based on their sizes, thus corresponding the electrical signals of each filter capacitor to their respective capacitances. Therefore, when all filter capacitors are functioning normally, the total detected capacitance obtained from their electrical signals should theoretically be equal to the total capacitance of all filter capacitors, i.e., equal to the reference capacitance. Based on this, if the total detected capacitance differs from the reference capacitance, it can be considered that a filter capacitor is abnormal, and thus an abnormal filter capacitor can be identified.

[0081] In one embodiment, the anomaly detection method further includes the step of determining that all of the filter capacitors are abnormal when no electrical signal is obtained for each of the filter capacitors.

[0082] It is understandable that when all filter capacitors are malfunctioning, the target channel cannot acquire the electrical signals of the filter capacitors, and therefore, the electrical signals of each filter capacitor cannot be obtained. Thus, if the discharge data is not acquired, it can be determined that all the filter capacitors are malfunctioning. Furthermore, it can be assumed that the filter capacitors have experienced abnormalities such as component loss or poor soldering.

[0083] Based on the above embodiments, in one embodiment, such as Figure 6 As shown, this application provides an anomaly detection method, the anomaly detection method comprising:

[0084] S601: When the current operating mode is detection mode, control the disconnection of the target channel from the common ground terminal, and control the power module to output electrical signals of different frequencies to the corresponding filter capacitors according to the capacitance of each filter capacitor, so as to charge each filter capacitor. The target channel is one of the receiving channel RX and the transmitting channel TX.

[0085] S602: Acquire the electrical signals of each of the filter capacitors collected by the target channel;

[0086] S603: If no electrical signal is obtained from each of the filter capacitors, it is determined that each of the filter capacitors is abnormal;

[0087] S604: When the electrical signals of each filter capacitor are obtained, the total detection capacitance corresponding to each filter capacitor is obtained according to the electrical signals of each filter capacitor. When the total detection capacitance is different from the reference capacitance, it is determined that there is an abnormal filter capacitor.

[0088] The above-described anomaly detection method, after the touch display module enters the detection mode, controls the disconnection of the target channel from the common ground terminal and controls the power module to charge each filter capacitor, so that the target channel can collect the electrical signals of each filter capacitor. When the discharge data is not obtained, it is determined that each filter capacitor is abnormal. When the discharge data is obtained, the total detection capacitance corresponding to each filter capacitor is obtained according to the electrical signals of each filter capacitor. When the total detection capacitance is different from the reference capacitance, it is determined that there is an abnormal filter capacitor. Based on the anomaly detection method of this embodiment, it can be further determined whether all abnormal filter capacitors are abnormal.

[0089] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the accompanying drawings may include multiple steps or stages, which are not necessarily completed at the same time, but may be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but may be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0090] In one embodiment, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0091] When the current operating mode is detection mode, the connection between the target channel and the common ground is disconnected, and the power module is controlled to charge each filter capacitor. The target channel is one of the receiving channel and the transmitting channel.

[0092] Acquire the electrical signals of each of the filter capacitors collected through the target channel;

[0093] Whether a filter capacitor is abnormal is determined based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of all filter capacitors.

[0094] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: controlling the power module to output electrical signals of different frequencies to the corresponding filter capacitors according to the capacitance of each filter capacitor, so as to charge each filter capacitor.

[0095] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the total detection capacitance corresponding to each of the filter capacitors based on the electrical signals of each of the filter capacitors, and determining that there is an abnormal filter capacitor when the total detection capacitance is different from the reference capacitance.

[0096] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: when no electrical signal is obtained from each of the filter capacitors, it is determined that each of the filter capacitors is abnormal.

[0097] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0098] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0099] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A touch display module, characterized in that, include: The touch chip includes a processing circuit and a power module, wherein the processing circuit is connected to the power module; The display panel is connected to the processing circuit via a receiving channel and a transmitting channel; At least one filter capacitor, the first end of each filter capacitor is connected to the power module, and the second end of each filter capacitor is connected to the target channel, wherein the target channel is one of the receiving channel and the transmitting channel; In the detection mode, the processing circuit is used to control the disconnection of the target channel from the common ground terminal, control the power module to charge each of the filter capacitors, obtain the electrical signal of each of the filter capacitors through the target channel, and determine whether the filter capacitors are abnormal based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of each of the filter capacitors.

2. The touch display module according to claim 1, characterized in that, In the detection mode, the processing circuit is also used to determine that each of the filter capacitors is abnormal when no electrical signal is acquired.

3. The touch display module according to claim 1, characterized in that, In the detection mode, the processing circuit is further configured to, when the electrical signal is acquired, obtain the total detection capacitance corresponding to each of the filter capacitors based on each of the electrical signals, and determine that there is an abnormal filter capacitor when the total detection capacitance is different from the reference capacitance.

4. The touch display module according to claim 1, characterized in that, When exiting the detection mode, the processing circuit is also used to control the target channel to be connected to the common ground terminal.

5. The touch display module according to any one of claims 1 to 4, characterized in that, The processing circuit includes a processing module and a signal conversion module. The processing module is connected to the signal conversion module and the power supply module, respectively. The signal conversion module is connected to the display panel through the receiving channel and the transmitting channel.

6. The touch display module according to claim 5, characterized in that, The signal conversion module includes an analog front-end module and an analog-to-digital conversion module. The analog front-end module is connected to the receiving channel and the transmitting channel, respectively. The analog front-end module is used to transmit driving signals to the display panel through the transmitting channel and to receive capacitance change signals of each sensing node fed back by the receiving channel. The analog-to-digital conversion module is connected to the analog front-end module and the processing module, respectively. It is used to convert the analog signals sent by the analog front-end module into digital signals and transmit them to the processing module.

7. A display device, characterized in that, Includes the touch display module as described in any one of claims 1 to 6.

8. An anomaly detection method, characterized in that, Applications in touch display modules; The anomaly detection method includes: When the current operating mode is detection mode, the connection between the target channel and the common ground is disconnected, and the power module is controlled to charge each filter capacitor. The target channel is one of the receiving channel and the transmitting channel. Acquire the electrical signals of each of the filter capacitors collected through the target channel; Whether a filter capacitor is abnormal is determined based on the electrical signal of each filter capacitor and the reference capacitance, wherein the reference capacitance is the total capacitance of all filter capacitors.

9. The anomaly detection method according to claim 8, characterized in that, The control power module charges each filter capacitor, including: Based on the capacitance of each filter capacitor, the power module outputs electrical signals of different frequencies to the corresponding filter capacitors to charge them.

10. The anomaly detection method according to claim 8 or 9, characterized in that, Determining whether a filter capacitor is abnormal based on its electrical signal and reference capacitance includes: The total detection capacitance corresponding to each filter capacitor is obtained based on the electrical signal of each filter capacitor. When the total detection capacitance is different from the reference capacitance, it is determined that there is an abnormal filter capacitor.

11. The anomaly detection method according to claim 8 or 9, characterized in that, The method further includes: When exiting the detection mode, control the target channel to connect to the public ground.

12. The anomaly detection method according to claim 8 or 9, characterized in that, The method further includes: If no electrical signal is obtained from each of the filter capacitors, it is determined that each of the filter capacitors is abnormal.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 8 to 12.

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