Touch display screen power supply capacity test method and test system

Abstract

The application discloses a kind of touch display screen power supply power ability test method and test system;Among them, method is connected by adapter device after terminal mainboard and touch display screen, obtains the first current value of current target power supply when touch display screen is in preset state, and access electronic load device on adapter device, so that electronic load device and touch display screen are connected in parallel after, also in preset state under touch display screen, adjust the power consumption of electronic load device, and when the voltage value of current target power supply meets preset threshold or the function of touch display screen is abnormal, the second current value of electronic load device is obtained, and then the power supply capacity of current target power supply is obtained according to the first current value and the second current value;Solve the technical problems that the test result is not accurate enough and the test content is not comprehensive in the related art for testing touch display screen power supply.

Description

Technical Field

[0001] This invention relates to the field of power supply testing technology, and in particular to a method and system for testing the power supply capability of a touch screen display. Background Technology

[0002] The touch screen of smart terminal devices (such as smartphones, tablets, etc.) is one of the main power-consuming components. In order to adapt to the power consumption of the touch screen, it is necessary to test the power supply capacity of the power supply that powers the touch screen in the smart terminal device to obtain the power supply data of the touch screen and ensure that the power supply of the touch screen meets the usage requirements.

[0003] In related technologies, when testing the power supply of a touch screen, the terminal motherboard is usually connected to the touch screen, and a multimeter is connected in series on the connection line to test the power supply of the current line. However, this testing method has at least two drawbacks: First, after connecting the multimeter in series, the test results are inaccurate due to the internal resistance of the multimeter itself, and if the power supply redundancy of the current line is small, the test cannot be performed; second, this testing method cannot test the load-bearing capacity of the touch screen's power supply, and its testing is not comprehensive enough.

[0004] Therefore, how to solve the technical problems of inaccurate testing and incomplete test results of touch display power supply in related technologies has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a method and system for testing the power supply capability of a touch display screen, which addresses the technical problems of inaccurate test results and incomplete test content in related technologies for testing the power supply of touch displays.

[0006] In a first aspect, one embodiment of the present invention provides a method for testing the power supply capability of a touch display screen, wherein a terminal motherboard is connected to the touch display screen via an adapter, and includes the following steps:

[0007] Set the touch screen to a preset state and obtain the first current value of the current target power supply for powering the touch screen;

[0008] An electronic load device is connected to the adapter, so that the electronic load device is connected in parallel with the touch screen.

[0009] When the touch screen is in the preset state, the electronic load device is adjusted. If the voltage value of the current target power supply meets the preset threshold or the touch screen is malfunctioning, the second current value of the electronic load device is obtained.

[0010] The power supply capability of the current target power supply is obtained based on the first current value and the second current value.

[0011] The touch display screen power supply capability testing method of the present invention has at least the following beneficial effects:

[0012] This invention provides a method for testing the power supply capability of a touch screen. After connecting the terminal motherboard to the touch screen via an adapter, the method acquires the first current value of the target power supply when the touch screen is in a preset state. An electronic load device is connected to the adapter, allowing the electronic load device to be connected in parallel with the touch screen. Similarly, when the touch screen is in the preset state, the power consumption of the electronic load device is adjusted. When the voltage value of the target power supply meets a preset threshold or the touch screen malfunctions, the method acquires the second current value of the electronic load device. Based on the first and second current values, the power supply capability of the target power supply is determined. This method solves the technical problems of inaccurate test results and incomplete test content in related technologies for testing the power supply capability of touch screens, providing an accurate and comprehensive method for testing the power supply capability of touch screens.

[0013] According to another embodiment of the touch display power supply capability test method of the present invention, the adapter includes an adapter FPC;

[0014] The adapter FPC is used to connect all the connection networks of the terminal motherboard and the touch screen through corresponding 0-ohm resistors. Test points are set at both ends of the 0-ohm resistors, and the 0-ohm resistors are equipped with on / off switches.

[0015] The connection network includes a power connection network and a data transmission connection network.

[0016] According to another embodiment of the touch display screen power supply capability test method of the present invention, the step of placing the touch display screen in a preset state includes:

[0017] The touch screen display is set to either a pure red desktop or a pure white desktop.

[0018] The touch display screen is set to a five-finger touch state;

[0019] The brightness of the touch screen is set to the highest brightness setting.

[0020] According to another embodiment of the touch display screen power supply capability testing method of the present invention, obtaining the first current value of the current target power supply for the touch display screen includes:

[0021] A current detection device is connected in series in the adapter to obtain the first current value;

[0022] Alternatively, a voltage detection device may be connected in parallel with the adapter to obtain a first voltage value;

[0023] The first current value is obtained by connecting a DC power supply in series in the adapter according to the first voltage value.

[0024] According to another embodiment of the touch display power supply capability testing method of the present invention, the voltage value of the current target power supply meeting a preset threshold includes:

[0025] The voltage of the current target power supply drops to 90% of its initial voltage.

[0026] According to another embodiment of the touch display screen power supply capability test method of the present invention, the functional abnormalities of the touch display screen include:

[0027] The touch screen is in any of the following states: touch failure, screen flickering, screen blurring, black screen, or power-on.

[0028] Secondly, one embodiment of the present invention provides a touch display screen power supply capability testing system, comprising:

[0029] A terminal motherboard, wherein the terminal motherboard is provided with an output interface;

[0030] The adapter is provided with a test endpoint, a first adapter interface and a second adapter interface, wherein the first adapter interface is connected to the output interface of the terminal motherboard;

[0031] A touch screen display, wherein the touch screen display is provided with an input interface, the input interface being connected to the second adapter interface;

[0032] The current target power supply is located on the terminal motherboard and supplies power to the touch screen display through the adapter.

[0033] A current detection device, connected to the test endpoint, is used to obtain the first current value of the current target power supply supplying power to the touch screen when the touch screen is in a preset state;

[0034] An electronic load device is connected to the test endpoint, such that the electronic load device is connected in parallel with the touch display screen;

[0035] In this process, the load power of the electronic load device is adjusted when the touch screen is in a preset state. If the voltage value of the current target power supply meets a preset threshold or the touch screen is malfunctioning, the second current value of the electronic load device is obtained.

[0036] The power supply capacity of the current target power supply is then obtained based on the first current value and the second current value.

[0037] According to other embodiments of the touch display power supply capability testing system of the present invention, the adapter is an adapter FPC;

[0038] The adapter FPC is used to connect all the connection networks of the terminal motherboard and the touch screen through a 0-ohm resistor. Test points are set at both ends of the 0-ohm resistor, and the 0-ohm resistor is equipped with an on / off switch.

[0039] The connection network includes a power connection network and a data transmission connection network.

[0040] According to other embodiments of the touch display power supply capability testing system of the present invention, the high-speed communication connection network in the data transmission connection network is wired according to differential requirements.

[0041] According to other embodiments of the present invention, a touch display power supply capability testing system is provided, wherein the electrical detection device includes an ammeter;

[0042] The two ends of the ammeter are respectively connected to the test points on both ends of the 0-ohm resistor, so that the ammeter is connected in series to the connection line between the current target power supply and the touch screen. Attached Figure Description

[0043] Figure 1 This is a schematic flowchart of a specific embodiment of a method for testing the power supply capability of a touch display screen according to an embodiment of the present invention;

[0044] Figure 2 This is a connection diagram of a specific embodiment of the terminal motherboard, adapter, and touch screen provided in this invention.

[0045] Figure 3 This is a simplified structural diagram of a specific embodiment of the adapter provided in this invention;

[0046] Figure 4 This is a schematic diagram of a specific embodiment of the current detection device connected in series in the adapter provided by the present invention;

[0047] Figure 5 This is a schematic diagram of a specific embodiment of the voltage detection device connected in parallel in the adapter provided by the present invention;

[0048] Figure 6 This is a connection diagram of a specific embodiment of the present invention, which connects a DC voltage regulator to an adapter.

[0049] Figure 7 This is a schematic diagram of a specific embodiment of the present invention, which shows the connection of an electronic load device in an adapter. Detailed Implementation

[0050] The following will describe the inventive concept and its resulting technical effects clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0051] In the description of the embodiments of the present invention, the term "several" means one or more, and the term "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number, while the terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features, and not as indicating or implying relative importance, the number of indicated technical features, or the order of the indicated technical features.

[0052] Reference Figure 1 and Figure 2 This invention provides a method for testing the power supply capability of a touch screen display, wherein a terminal motherboard 100 is connected to a touch screen display 200 via an adapter 300; the method includes the following steps:

[0053] S100: Obtain the first current value of the current target power supply that powers the touch screen;

[0054] The target power supply is located on the terminal motherboard 100, and then supplies power to the touch screen 200 through the adapter 300. When obtaining the first current value, the touch screen needs to be placed in a preset state beforehand to maximize its power consumption, thus enabling more accurate testing of the maximum load capacity of the target power supply in subsequent steps. In this step, the target power supply is the power supply currently being tested that powers the touch screen. Since touch screens have various types of power supplies, such as IOVCC (digital circuit operating voltage, providing logic power), VCI (display chip power supply), and ELVDD (backlight power supply), the first current value obtained when the target power supply powers the touch screen 200 needs to be obtained on the line connecting the target power supply and the adapter 300.

[0055] S200. Connect an electronic load device to the adapter so that the electronic load device is connected in parallel with the touch screen.

[0056] The electronic load device is connected to the line connecting the current target power supply and the transfer device, forming a parallel connection with the touch screen.

[0057] S300: Adjust the power consumption of the electronic load device. If the voltage value of the current target power supply meets the preset threshold or the touch screen is malfunctioning, obtain the second current value of the electronic load device.

[0058] This step is performed when the touch screen is in a preset state. After connecting the electronic load device, the target power supply includes the touch screen and the electronic load device. When the preset conditions are met, the second current value on the electronic load device is obtained. In this embodiment of the invention, the electronic load device can be implemented by an electronic load meter.

[0059] S400: Obtain the power supply capability of the current target power supply based on the first current value and the second current value.

[0060] In this process, the first current value of the target power supply output is obtained through the above steps S100 to S300 when the touch screen is in a preset state; and the second current value of the electronic load device is obtained after connecting the electronic load device and the touch screen in parallel under preset conditions. The power supply of both the electronic load device and the touch screen is the current target power supply. Thus, the power supply capacity of the current target power supply can be obtained by obtaining the first current value and the second current value.

[0061] This invention provides a method for testing the power supply capability of a touch screen. After connecting a terminal motherboard to the touch screen via an adapter, the method obtains a first current value of the target power supply when the touch screen is in a preset state. An electronic load device is connected in the adapter to the power supply line of the target power supply, forming a parallel connection between the electronic load device and the touch screen. By adjusting the power consumption of the electronic load device, a second current value is obtained when the voltage of the target power supply meets a preset threshold or when the touch screen malfunctions. The power supply capability of the target power supply is then determined based on the first and second current values. This method solves the technical problems of inaccurate test results and incomplete test content in related technologies for testing the power supply of touch screens.

[0062] Reference Figure 2 and reference Figure 3In some embodiments, to facilitate more convenient and accurate testing of the touch screen power supply, the adapter 300 is an adapter FPC (flexible printed circuit board). The adapter FPC has corresponding lines connecting all connection networks of the terminal motherboard 100 and the touch screen 200. All lines in the connection networks are connected via 0-ohm resistors mounted on the adapter FPC. Test points are located at both ends of the 0-ohm resistors, and each 0-ohm resistor is equipped with an on / off switch. In this embodiment, the 0-ohm resistor is implemented using high-conductivity wires. Specifically, all connection lines in the adapter FPC use high-conductivity wires, and test points are located at both ends of a preset length segment (i.e., the 0-ohm resistor). These test points are used to connect relevant testing equipment, including electronic load devices, current detection devices, voltage detection devices, and DC regulated power supplies. An on / off switch (disconnecting the 0-ohm resistor) is located at one of the test points of the 0-ohm resistor. In this embodiment, all connection networks of the terminal motherboard 100 and the touch display screen 200 include power connection networks and data transmission connection networks. Among them, the high-speed communication connection network in the data transmission connection network is wired according to differential requirements: for example, the MIPI communication connection network requires that the MIPI connection lines in the adapter FPC be set to equal length and equidistant, and a GND connection line (reference ground connection line) is set. By setting the high-speed communication connection network according to differential requirements, it can be ensured that the high-speed communication data transmission can be carried out normally after the terminal motherboard 100 and the touch display screen 200 are connected through the adapter FPC 300, and the power supply of the touch display screen can be tested under normal connection conditions between the terminal motherboard 100 and the touch display screen 200.

[0063] In some embodiments, in step S100, to accurately test the power supply capability of the touch screen power supply, the touch screen needs to be set to a preset state when testing the current target power supply, so that the current power consumption of the touch screen is maximized. This preset state includes: setting the touch screen display state to a pure red or pure white desktop; the power consumption is higher when the touch screen is in a pure red or pure white desktop display state; simultaneously, performing a five-finger touch operation on the touch screen increases the power consumption, as the power consumption is related to the current touch screen index; furthermore, setting the touch screen brightness to the highest brightness state further increases the power consumption. Based on these settings, the power consumption of the touch screen is at a higher value, thus allowing for more accurate measurement of the power supply capability when testing the current target power supply.

[0064] Reference Figure 4In some embodiments, the current detection device is implemented using an ammeter 500. After the touch display screen 200 is placed in a preset state using the above embodiments, it is necessary to obtain the first current value of the current target power supply supplying power to the touch display screen. In this embodiment, by connecting the ammeter 500 in series in the adapter FPC 300, the first current value can be obtained through the reading of the ammeter 500. Specifically, after disconnecting the 0-ohm resistor in the adapter FPC 300 corresponding to the current target power supply line, the test points at both ends of the 0-ohm resistor are connected to the two ends of the ammeter 500, thereby obtaining the current value output by the current target power supply to the touch display screen 200 when the touch display screen 200 is in the preset state, i.e., the first current value.

[0065] Reference Figure 5 and Figure 6 In some embodiments, due to the inherent internal resistance of the ammeter 500 (i.e., the current detection device), when obtaining the first current value by connecting the ammeter 500 in series in the adapter FPC 300, the first current obtained by connecting the ammeter 500 in series in the adapter FPC 300 is not accurate because the ammeter has already consumed a portion of the current. In this embodiment, when the touch screen 200 is in a preset state, one end of the voltage detection device 600 is connected to a test point corresponding to the 0-ohm resistor on the current target power supply line, and the other end of the voltage detection device 600 is connected to a test point on the GND connection line. In order to prevent the power consumption caused by the 0-ohm resistor in the line from affecting the accuracy of the test, the voltage detection device 600 selects the test point to be connected as close as possible to the terminal motherboard 100 (i.e., the current target power supply). After obtaining the first voltage value of the touch screen 200 output by the current target power supply, the 0-ohm resistor on the current target power supply line is disconnected (i.e., the current target power supply is cut off from powering the touch screen 200). The positive terminal of the DC regulated power supply 700 is connected to the test point where the 0-ohm resistor is connected to the touch screen, and the negative terminal of the DC regulated power supply 700 is connected to a test point on the GND connection line. The output voltage of the DC regulated power supply 700 is the first voltage value. Then, when the touch screen 200 is in the preset state, the current value of the DC regulated power supply 700, i.e., the first current value, is read. In this embodiment, after obtaining the first voltage value of the current target power supply output value of the touch screen 200 by pre-connecting the voltage detection device 600, the DC regulated power supply 700 is connected and the touch screen 200 is powered according to the first voltage value. Therefore, the current value read from the DC regulated power supply 700 is the accurate first current value, avoiding the inaccuracy of the measured first current value due to the internal resistance of the ammeter when reading the first current value via a series connection. Specifically, in one example, the voltage detection device 600 is implemented using a voltmeter.

[0066] Reference Figure 7 In some embodiments, after obtaining the first current value, the terminal motherboard 100, touch display screen 200, and adapter FPC 300 are restored to their initial connection relationship, keeping the touch display screen 200 in a preset state. At this time, an electronic load device 400 is connected to one of the test points corresponding to the 0-ohm resistor on the current target power supply line. The other end of the electronic load device 400 is connected to the test point of the GND connection line (the electronic load device 400 and the touch display screen 200 form a parallel connection). To prevent the power consumption caused by the 0-ohm resistor in the line from affecting the test accuracy, the test point connected to the electronic load device 400 is selected as close as possible to the side of the terminal motherboard 100 (i.e., the current target power supply). The power consumption of the electronic load device 400 is gradually increased. When the real-time voltage value of the current target power supply obtained through the electronic load device 400 drops to 90% of its initial voltage value, the current value of the electronic load device 400 at this time is recorded, i.e., the second current value. The sum of the previously obtained first current value and the current second current value is the maximum power supply capacity of the current target power supply. Furthermore, in some embodiments, during the gradual increase of the power consumption of the electronic load device 400, if the real-time voltage value of the current target power supply does not drop to 90% of its initial voltage value and the touch display screen 200 malfunctions, the current value of the electronic load device 400 at this time is obtained as a second current value. The sum of the second current value obtained at this time and the first current value obtained previously is the maximum value of the power supply capacity of the current target power supply.

[0067] In some embodiments, during the process of increasing the power consumption of the electronic load device 400, the abnormal function of the touch display screen 200 includes any of the following states: the touch display screen 200 is in a touch failure state, that is, the touch display screen 200 cannot respond to touch commands; the display screen is in a jitter state, that is, the display screen 200 displays a jittery image and cannot stably display the current image; the display screen is in a blurry state, that is, the current image displayed by the touch display screen 200 has stripes or distortion; the screen is in a black state, that is, although the touch display screen 200 is still powered on, the display image is lost; and the screen is powered on again, that is, the touch display screen 200 restarts after being powered off.

[0068] Reference Figures 2 to 7This invention provides a touch screen power supply capability testing system, comprising a terminal motherboard 100, a current target power supply (not shown), a touch screen 200, an adapter 300, an electronic load device 400, and a current detection device (including an ammeter 500 or a DC regulated power supply 700). The terminal motherboard 100 has an output interface, the adapter 300 has a test point, a first adapter interface, and a second adapter interface, and the touch screen 200 has an input interface. The current target power supply is located on the terminal motherboard 100. The first adapter interface of the adapter 300 is connected to the output interface of the terminal motherboard 100, and the second adapter interface of the adapter 300 is connected to the input interface of the touch screen 200. Thus, the current target power supply supplies power to the touch screen 200 through the adapter 300. The current reading device is connected to the test point of the adapter 300 to obtain current data. When the touch display screen 200 is in a preset state, the current target power supply is the first current value for powering the touch display screen 200. The electronic load device 400 is connected to the test point of the adapter device 300, forming a parallel relationship with the touch display screen. When the touch display screen 200 is in the preset state, the load power of the electronic load device 400 is adjusted. If the voltage value of the current target power supply meets the preset threshold or the touch display screen 200 malfunctions, the second current value of the electronic load device 400 is obtained at this time. The sum of the first current value and the second current value is the power supply capacity of the current target power supply. In this embodiment, the terminal motherboard 100 (including the current target power supply) and the touch display screen 200 are combined to form a terminal device with complete functions, such as a smartphone or tablet.

[0069] In some embodiments, the adapter 300 is implemented as an adapter FPC. In some embodiments, to facilitate and accurately test the power supply of the touch display screen, the adapter FPC is provided with corresponding lines to connect all connection networks of the terminal motherboard 100 and the touch display screen 200. All lines in the connection networks are connected through 0-ohm resistors provided on the adapter FPC. Test points are provided at both ends of the 0-ohm resistors, and each 0-ohm resistor is equipped with an on / off switch. The connection networks include power connection networks and data transmission connection networks. Furthermore, in other embodiments, the high-speed communication connection network in the data transmission connection network is wired according to differential requirements.

[0070] Reference Figure 4 In some embodiments, the current detection device includes an ammeter 500, the two ends of which are respectively connected to two test points corresponding to the 0-ohm resistor on the current target power supply line, such that the ammeter 500 is connected in series to the line connecting the current target power supply and the touch display screen 200.

[0071] Reference Figure 5 and Figure 6 In some embodiments, the current reading device includes a DC regulated power supply 700. When the touch screen 200 is in a preset state, a voltmeter 600 is connected to one end of a test point of a 0-ohm resistor on the current target power supply line, and the other end of the voltmeter 600 is connected to a test point of the GND connection line. After obtaining the first voltage value of the current target power supply output value of the touch screen 200, the 0-ohm resistor on the current target power supply line is disconnected (i.e., the current target power supply is cut off to power the touch screen 200). The positive terminal of the DC regulated power supply 700 is connected to the test point where the 0-ohm resistor is connected to the touch screen 200, and the negative terminal of the DC regulated power supply 700 is connected to a test point of the GND connection line. The output voltage of the DC regulated power supply 700 is the first voltage value. Then, when the touch screen 200 is in a preset state, the current value of the DC regulated power supply 700, i.e., the first current value, is read.

[0072] The implementation principle of the touch screen power supply capability testing system in this embodiment of the invention corresponds to the implementation principle of the touch screen power supply capability testing method described in any of the above embodiments.

[0073] This invention discloses a touch screen power supply capability testing system. It connects a terminal motherboard to the touch screen via an adapter. The system acquires the first current value of the target power supply when the touch screen is in a preset state. An electronic load device is connected to the adapter, allowing the electronic load device to operate in parallel with the touch screen. Similarly, when the touch screen is in the preset state, the power consumption of the electronic load device is adjusted. When the voltage of the target power supply meets a preset threshold or the touch screen malfunctions, a second current value of the electronic load device is acquired. Based on the first and second current values, the power supply capability of the target power supply can be determined. This system solves the technical problem in related technologies where accurate and comprehensive testing of touch screen power supplies is impossible.

[0074] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A method for testing the power supply capability of a touch display screen, characterized in that, The terminal motherboard is connected to the touch screen via an adapter; the method includes the following steps: Set the touch screen to a preset state and obtain the first current value of the current target power supply for powering the touch screen; An electronic load device is connected to the adapter, so that the electronic load device is connected in parallel with the touch screen. When the touch screen is in the preset state, the electronic load device is adjusted. If the voltage value of the current target power supply meets a preset threshold or the touch screen is malfunctioning, the second current value of the electronic load device is obtained. The voltage value of the current target power supply meeting the preset threshold includes: the voltage value of the current target power supply dropping to 90% of the initial voltage value; the malfunction of the touch screen includes: the touch screen being in any of the following states: touch failure state, display screen jitter state, display screen blurry state, black screen state, or power-on state. The power supply capacity of the current target power supply is obtained based on the first current value and the second current value, wherein the sum of the obtained first current value and the current second current value is the maximum value of the power supply capacity of the current target power supply.

2. The method for testing the power supply capability of a touch screen display according to claim 1, characterized in that, The adapter includes an adapter FPC; The adapter FPC is used to connect all the connection networks of the terminal motherboard and the touch screen through corresponding 0-ohm resistors. Test points are set at both ends of the 0-ohm resistors, and the 0-ohm resistors are equipped with on / off switches. The connection network includes a power connection network and a data transmission connection network.

3. The method for testing the power supply capability of a touch screen display according to claim 1, characterized in that, Placing the touch screen display in a preset state includes: The touch screen display is set to either a pure red desktop or a pure white desktop. The touch display screen is set to a five-finger touch state; The brightness of the touch screen is set to the highest brightness setting.

4. The method for testing the power supply capability of a touch display screen according to claim 2 or 3, characterized in that, The step of obtaining the first current value of the current target power supply for the touch screen includes: A current detection device is connected in series in the adapter to obtain the first current value; Alternatively, a voltage detection device may be connected in parallel with the adapter to obtain a first voltage value; The first current value is obtained by connecting a DC power supply in series in the adapter according to the first voltage value.

5. A power supply capability testing system for a touch screen display, characterized in that, include: A terminal motherboard, wherein the terminal motherboard is provided with an output interface; The adapter is provided with a test endpoint, a first adapter interface and a second adapter interface, wherein the first adapter interface is connected to the output interface of the terminal motherboard; A touch screen display, wherein the touch screen display is provided with an input interface, the input interface being connected to the second adapter interface; The current target power supply is located on the terminal motherboard and supplies power to the touch screen display through the adapter. A current detection device, connected to the test endpoint, is used to obtain the first current value of the current target power supply supplying power to the touch screen when the touch screen is in a preset state; An electronic load device is connected to the test endpoint, such that the electronic load device is connected in parallel with the touch display screen; In this process, the load power of the electronic load device is adjusted when the touch screen is in a preset state. If the voltage value of the current target power supply meets a preset threshold or the touch screen is malfunctioning, the second current value of the electronic load device is obtained. The power supply capacity of the current target power supply is then obtained based on the first current value and the second current value.

6. The touch display screen power supply capability testing system according to claim 5, characterized in that, The adapter is an FPC adapter; The adapter FPC is used to connect all the connection networks of the terminal motherboard and the touch screen through a 0-ohm resistor. Test points are set at both ends of the 0-ohm resistor, and the 0-ohm resistor is equipped with an on / off switch. The connection network includes a power connection network and a data transmission connection network.

7. The touch display screen power supply capability testing system according to claim 6, characterized in that, The high-speed communication connection network in the data transmission connection network is wired according to differential requirements.

8. The touch display screen power supply capability testing system according to claim 6 or 7, characterized in that, The current detection device includes an ammeter; The two ends of the ammeter are respectively connected to the test points on both ends of the 0-ohm resistor, so that the ammeter is connected in series to the connection line between the current target power supply and the touch screen.

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