Screen detection test system supporting screen interfaces of various specifications and test method thereof
By designing a screen inspection and testing system that supports screen interfaces of multiple specifications, the problems of traditional test efficiency, high equipment cost and large space consumption are solved, efficient and convenient screen testing is achieved, and equipment procurement and maintenance costs are reduced.
Patent Information
- Application Number
- CN202411145948.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-02-14
AI Technical Summary
Traditional screen manufacturers need to collect test platforms with multiple interfaces, resulting in low testing efficiency, high equipment costs and large space consumption.
Design a screen inspection and testing system that supports screen interfaces of multiple specifications, including central processing modules, storage modules, current monitoring modules, human-computer interaction modules, connection modules and power modules, and connect the screen to be tested through multiple interface specifications connection boards. , realize cross-platform testing.
It improves the efficiency of screen testing, reduces the cost of purchasing a variety of test equipment, reduces equipment maintenance and space consumption, and achieves the multi-purpose effect of a machine.
Smart Images
Figure CN119438745A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of screen testing, and in particular to a screen testing system supporting screen interfaces of various specifications and a testing method thereof. Background Art
[0002] With the rapid development of domestic display panel technology, various novel "water drop screens", "punch screens", "bangs screens" and other special-shaped appearances have been launched on mobile phones, and display panels have entered the "China moment". A group of high-quality panel companies such as BOE, Tianma, Huaxing Optoelectronics, and Visionox have continuously increased their market share in the international market. The shipment volume of display panels has continuously surpassed that of Japanese and Korean brands, and the shipment volume of domestic panels has long been the world's first.
[0003] Technically, display screens are mainly divided into two camps, one is the TFT process mainly used for mid-to-low-end brand mobile phones, and the other is the mid-to-high-end models mainly used for OLED. TFT screens cannot emit light by themselves, and can only rely on backlight to generate light sources. As the angle of the liquid crystal cell in each pixel of the TFT screen is reversed, light is transmitted through to form a colorful picture. OLED, on the other hand, can emit light by itself to form a more gorgeous colorful picture. Due to the existence of backlight, the former cannot be made too thin and light, while the latter OLED does not need backlight, can be made thinner and lighter, and can be bent and folded. Display panels on the market, regardless of MIPI C / D PHY, eDP, LVDS, HDMI, IIC, SPI and other interface specifications, are composed of TFT screens or OLED screens. First of all, the MIPIC / D PHY interface screen is an interface protocol mainly used for mobile phone screens. To detect the display and touch functions of this type of screen, there will be a dedicated mobile phone screen test equipment to detect it. The eDP interface screen is mainly used in Apple's tablet computers, and there will be a dedicated eDP device to detect it. Similarly, LVDS, HDMI and other screens are mainly used in desktop computers or laptops, and there will also be a test device for this interface. Finally, IIC interface or SPI interface screens are widely used in small-size watch screens, and there are also special testing platforms for watch screens.
[0004] Traditional screen manufacturers who need to produce screens with the above interfaces need to assemble testing platforms for all interfaces, which not only costs a lot of money, but also fiddling with these devices will result in low screen testing efficiency. Too many devices also take up too much space in the dust-free workshop. Summary of the invention
[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a screen inspection test system and a test method thereof that support screen interfaces of various specifications, which can test display screens with various different interfaces across platforms, improve the efficiency of screen testing, and reduce the cost of purchasing multiple testing equipment.
[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A screen inspection test system supporting screen interfaces of various specifications, including: A central processing module, and a storage module, a current monitoring module, a human-computer interaction module, a connection module and a power supply module respectively connected to the central processing module, wherein the current monitoring module is connected to the connection module via the central processing module; The connection module includes connection boards of multiple interface specifications, which are used to connect the screens to be tested of corresponding interface specifications; the connection board is connected to the central processing module through a power supply voltage circuit, a video signal bus, and an IIC or SPI interface bus; The central processing module includes a main control chip and an identification module, wherein the identification module is used to obtain the model of the screen to be tested and also to determine whether the connection board connected to the screen to be tested matches; The storage module is used to store the current thresholds of various channels of the screen to be tested of various interface specifications, the display test program and the touch test program, the display test program is used to test the display function of the screen to be tested, and the touch test program is used to test the touch function of the screen to be tested; The current monitoring module is used to monitor the current values of each channel of the screen to be tested in real time during the test; The human-computer interaction module includes a display unit and an input unit, wherein the display unit is used to display the current value obtained by the current monitoring module in real time, and the input unit includes a button, which is used to trigger a corresponding operation program; The power supply module is used to provide power to the screen inspection test system and the screen to be tested.
[0007] As a preferred solution, the human-computer interaction module also includes an audio interface, which is connected to the central processing module, and the input unit also includes a WIFI module, an SD card module, a Type C interface and a USB interface respectively connected to the main control chip.
[0008] As a preferred solution, the storage module includes an eMMC memory, a RAM memory and a ROM memory.
[0009] On the other hand, the present invention also provides a screen inspection test method supporting screen interfaces of various specifications, including the above-mentioned screen inspection test system supporting screen interfaces of various specifications, and the test steps are as follows: S100, initializing the system through the input unit; S200, connecting the screen to be tested via the connecting board; S300, supplying power to the connection board through the power supply module, and monitoring and acquiring current values of various channels of the screen to be tested through the current monitoring module; S400, identifying whether the connection board matches the model of the screen to be tested through the identification module; if they match, entering step S500; S500, the main control chip retrieves and executes the display test program matching the model of the screen to be tested from the storage module to perform a screen display test; S600: The main control chip retrieves from the storage module and executes the touch test program that matches the model of the screen to be tested to perform a screen touch test.
[0010] As a preferred solution, in step S300, the following steps are included: S310, the current monitoring module detects whether the power switch of the power module supplying power to the connection board is turned on; if it is turned on, enter step S320; S320, the current monitoring module obtains the current values of each channel of the screen to be tested through the connection board and sends them to the main control chip, and displays the current values of each channel through the display unit; S330, the main control chip compares the obtained current values of each channel with the current thresholds of each channel pre-stored in the storage module, and determines whether the obtained current values of each channel of the screen to be tested meet the current thresholds of each channel; if so, return to step S320, if not, enter step S340; S340: The main control chip cuts off the power supply of the screen to be tested and gives a prompt through the display unit.
[0011] As a preferred solution, in step S400, the following steps are included: S410, the identification module obtains the model of the screen to be tested and the IO pin code of the connection board connected to the screen to be tested; S420, the identification module determines whether the model of the screen to be tested matches the connection board according to the acquired model of the screen to be tested and the IO pin code of the connection board; if so, enter step S430; if not, prompt the staff member through the display unit that the connection board is connected incorrectly, and cut off the power supply of the screen to be tested; S430, the identification module sends a display test instruction to the main control chip, and after receiving the display test instruction, the main control chip provides corresponding voltage outputs to the screen to be tested through the power supply voltage circuit.
[0012] As a preferred solution, in step S500, the following steps are included: S510, after the main control chip obtains the display test instruction, it retrieves the display test program and the picture data and / or video data corresponding to the model of the screen to be tested from the eMMC memory and stores them in the RAM memory; S520, the main control chip converts the image data and / or video data into a corresponding image format and / or video format according to the acquired model of the screen to be tested; S530, the main control chip obtains the interface protocol corresponding to the model of the screen to be tested, and outputs the converted picture data and / or video data to the screen to be tested through the connection module according to the interface protocol; S540, after receiving the picture data and / or video data, the screen to be tested displays the picture data and / or video data; S550, after the display of the image data and / or video data is completed, the staff confirms the display result by clicking the button; if the image data and / or video data cannot be displayed correctly, click to confirm as a defective product; if the image data and / or video data can be displayed correctly, click to confirm as a good product, and at the same time, the human-computer interaction module sends a touch test instruction to the main control chip.
[0013] As a preferred solution, in step S600, the following steps are included: S610, after the main control chip obtains the touch test instruction, it retrieves the touch test program corresponding to the model of the screen to be tested from the eMMC memory and stores it in the RAM memory; the touch test program includes a screen plane coordinate system map corresponding to the screen to be tested; S620, the staff performs a line drawing operation on the display screen surface of the screen to be tested by using a finger or a touch test device, and the line drawing track covers the entire display screen surface of the screen to be tested; S630, the touch driver IC on the screen to be tested senses the change in the capacitance value of the display screen and records the coordinate value of the point; S640, the main control chip obtains the coordinate value of the capacitance value change of the screen to be tested; S650: The main control chip determines whether the touch function of the screen to be tested is normal or abnormal according to whether the acquired coordinate values fill up the screen plane coordinate system map, and reminds the staff through the display unit.
[0014] As a preferred solution, step S600 also includes a multi-touch test.
[0015] The above-mentioned screen inspection test system and test method supporting screen interfaces of multiple specifications have obvious advantages and beneficial effects compared with the prior art. Specifically, it can be seen from the above-mentioned technical scheme that it is mainly through setting a central processing module, and a storage module, a current monitoring module, a human-computer interaction module, a connection module and a power supply module respectively connected to the central processing module. The current monitoring module is connected to the connection module. The connection module includes a connection board of multiple interface specifications, which is used to connect the screen to be tested with corresponding interface specifications, and store various current thresholds, display test programs and touch test programs of the screen to be tested with each interface specification in the storage module. It connects touch screens of multiple interface specifications through non-corresponding adapter boards, crosses the boundaries of various interface protocols, and can universally test MIPI C / D PHY, eDP, LVDS, HDMI, IIC, SPI and other interface screens. One machine can be used for multiple purposes, making screen testing efficient and convenient, improving the efficiency of screen testing, reducing equipment procurement and maintenance costs, and improving equipment utilization. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the module structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the circuit principle of an embodiment of the present invention; Figure 3 is a flow chart of a screen inspection test method according to an embodiment of the present invention; Figure 4 This is a flow chart of a method for monitoring currents of various channels of a screen to be tested according to an embodiment of the present invention; Figure 5 is a flow chart of a connection plate matching and identification method according to an embodiment of the present invention; Figure 6 is a flow chart of a screen display testing method according to an embodiment of the present invention; Figure 7 It is a flow chart of a screen touch testing method according to an embodiment of the present invention. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0019] See also Figures 1 to 7 , shows a screen inspection test system supporting screen interfaces of various specifications provided by an embodiment of the present invention, including a central processing module, and a storage module, a current monitoring module, a human-computer interaction module, a connection module and a power supply module respectively connected to the central processing module, wherein the current monitoring module is connected to the connection module through the central processing module; the connection module includes a connection board of multiple interface specifications such as MIPI C / D PHY, eDP, LVDS, HDMI, IIC, SPI, etc., which is used to connect the screen to be tested of the corresponding interface specifications; the connection board is connected to the central processing module through a power supply voltage circuit, a video signal bus and an IIC or SPI interface bus, the power supply voltage circuit is used to power the screen to be tested, the video signal bus is used to transmit video and picture data, and the IIC or SPI interface bus is used to transmit touch data of the screen to be tested; the central processing module includes a main control chip and an identification module, the identification module is used to obtain the model of the screen to be tested, and is also used to determine whether the connection board connected to the screen to be tested matches; the storage module is used to store the current thresholds of various channels, display test programs and touch test programs of the screen to be tested of various interface specifications, The display test program is used to test the display function of the screen to be tested, and the touch test program is used to test the touch function of the screen to be tested; the current monitoring module is used to monitor the current values of each channel of the screen to be tested in real time during the test. Once it is found that a current value of a certain channel exceeds the threshold range, the power supply of the screen to be tested is immediately cut off to prevent the screen from being burned; the human-computer interaction module includes a display unit and an input unit. The display unit is used to display the current value obtained by the current monitoring module in real time, and is also used to display the model name, test program name, connection status and display prompt information of the corresponding screen to be tested. The input unit includes a button, which is used to trigger corresponding operations and programs; the power supply module is used to provide power to the screen inspection test system and the screen to be tested, and can provide accurate output of multiple power supply voltages.
[0020] In this embodiment, the human-computer interaction module also includes an audio interface, which is connected to the main control chip, and the input unit also includes a WIFI module, an SD card module, a Type C interface and a USB interface respectively connected to the main control chip; the main control chip is connected to the SD card through the SD card module to obtain SD card data, upgrade the system or expand the device image or video memory; connected to the Type C interface in conjunction with the host computer system on the computer side, the program can be compiled and the screen can be debugged; connected to the audio interface, audio can be output while outputting the video; connected to the USB, U disk data can be read or U disk upgrade files can be obtained to upgrade the system; since the screens to be tested include mobile phone screens, watch screens, tablet screens, industrial screens, etc., the above screens have IOVCC, VDDD, VCI, AVDD, VSP, VSN, LEDA, LEDK and other voltages, and the interface and power supply requirements of each screen are different. Therefore, a programmable and adjustable power supply circuit is required to accurately supply the voltage required for the above screen.
[0021] Furthermore, the storage module includes an eMMC memory, an SSD memory, a RAM memory and a ROM memory, and the RAM memory includes a DDR4 memory or a DDR5 memory.
[0022] The main control chip adopts an ARM chip processor, which can be used with storage modules and peripheral hardware devices such as display screens, buttons, SD cards, Type C interfaces, audio interfaces, USB interfaces, etc. to realize the construction of the Android platform system of this system. Interface protocols such as MIPI C / D PHY, eDP, LVDS, HDMI, IIC, SPI, etc. are all based on Android output. The ARM chip processor can realize the programmable and adjustable functions of multiple DC-DC circuits and the real-time current monitoring function. The device containing this system can be compact in size. By setting the audio interface and input unit, the device can also have the function of a Demo display platform, support smooth playback of high-resolution videos, and support audio output. Manufacturers can play ultra-high-definition videos and audios on the screen for promoting the company's corporate culture, etc., to achieve the effect of one machine with multiple uses.
[0023] The present invention also provides a screen inspection test method supporting screen interfaces of various specifications, including the above-mentioned screen inspection test system supporting screen interfaces of various specifications, and the test steps are as follows: S100, initializing the system through the input unit; S200, connecting the screen to be tested via the connecting board; S300, supplying power to the connection board through the power module, monitoring and acquiring the current values of each channel of the screen to be tested through the current monitoring module; if the acquired current values of each channel meet the threshold, entering step S400, if not, the power module cuts off the power supply to the connection board, and prompts through the display unit; S400, identifying whether the connection board matches the model of the screen to be tested through the identification module; if they match, entering step S500; S500, the main control chip retrieves and executes the display test program matching the model of the screen to be tested from the storage module to perform a screen display test; S600: The main control chip retrieves from the storage module and executes the touch test program that matches the model of the screen to be tested to perform a screen touch test.
[0024] Furthermore, in step S300, the following steps are included: S310, the current monitoring module detects whether the power switch of the power module supplying power to the connection board is turned on; if it is turned on, enter step S320; if it is not turned on, prompt through the display unit; S320, the current monitoring module obtains the current values of each channel of the screen to be tested through the connection board and sends them to the main control chip, and displays the current values of each channel through the display unit; S330, the main control chip compares the obtained current values of each channel with the current thresholds of each channel pre-stored in the storage module, and determines whether the obtained current values of each channel of the screen to be tested meet the current thresholds of each channel; if so, return to step S320, if not, enter step S340; S340: The main control chip cuts off the power supply of the screen to be tested and gives a prompt through the display unit.
[0025] When the current monitoring program starts running, the current monitoring module program obtains the current values of each channel of the screen to be tested in real time. The obtained current values will be displayed on the display unit in real time, and the central processing module will determine whether the power supply current of the screen to be tested exceeds the standard. Once an abnormality is found, the power supply to the screen to be tested will be cut off immediately to prevent the screen to be tested from burning.
[0026] Furthermore, in step S400, the following steps are included: S410, the identification module obtains the model of the screen to be tested and the IO pin code of the connecting board connected to the screen to be tested through the connecting board; S420, the identification module determines whether the model of the screen to be tested matches the connection board according to the acquired model of the screen to be tested and the IO pin code of the connection board; if so, enter step S430; if not, prompt the staff member through the display unit that the connection board is connected incorrectly, and cut off the power supply of the screen to be tested; S430, the identification module sends a display test instruction to the main control chip, and after receiving the display test instruction, the main control chip provides corresponding voltage outputs to the screen to be tested through the power supply voltage circuit.
[0027] The identification module detects the IO pins of the connection board of the screen to be tested, and after obtaining the code of the connection board, checks whether it matches the code of the screen to be tested; if it does not match, it prompts that the connection board is used incorrectly. If it matches, the system automatically outputs the corresponding power supplies to the screen to be tested and switches to the corresponding test program.
[0028] Furthermore, in step S500, the following steps are included: S510, after the main control chip obtains the display test instruction, it retrieves the display test program and the picture data and / or video data corresponding to the model of the screen to be tested from the eMMC memory and stores them in the RAM memory; S520, the main control chip converts the image data and / or video data into a corresponding image format and / or video format according to the acquired model of the screen to be tested; S530, the main control chip obtains the interface protocol corresponding to the model of the screen to be tested, and outputs the converted picture data and / or video data to the screen to be tested through the connection module according to the interface protocol; S540, after receiving the picture data and / or video data, the screen to be tested displays the picture data and / or video data; S550, after the display of the image data and / or video data is completed, the staff confirms the display result by clicking the button; if the image data and / or video data cannot be displayed correctly, click to confirm as a defective product; if the image data and / or video data can be displayed correctly, click to confirm as a good product. At the same time, the human-computer interaction module sends a touch test instruction to the main control chip, and reminds the staff to perform a touch test through the display unit.
[0029] Furthermore, in step S600, the following steps are included: S610, after the main control chip obtains the touch test instruction, it retrieves the touch test program corresponding to the model of the screen to be tested from the eMMC memory and stores it in the RAM memory; the touch test program includes a screen plane coordinate system map corresponding to the screen to be tested; S620, the staff performs a line drawing operation on the display screen surface of the screen to be tested by using a finger or a touch test device, and the line drawing track covers the entire display screen surface of the screen to be tested; S630, the touch driver IC on the screen to be tested senses the change in the capacitance value of the display screen and records the coordinate value of the point; S640, the main control chip obtains the coordinate value of the capacitance value change of the screen to be tested; S650. The main control chip determines whether the touch function of the screen to be tested is normal or abnormal according to whether the acquired coordinate values fill up the screen plane coordinate system map, and reminds the staff through the display unit; if the acquired coordinate values can fill up the screen plane coordinate system map, it means that the touch function of the screen to be tested is normal; if the acquired coordinate values cannot fill up the screen plane coordinate system map, it means that the touch function of the screen to be tested is abnormal.
[0030] Furthermore, in step S600, a multi-point touch test is also included; the multi-point touch test is a conventional test and will not be described in detail here.
[0031] The principle of touch and line drawing on the screen to be tested, taking the mobile phone screen with MIPI interface as an example: After the screen display test is completed, the staff tests the touch function of the screen on the screen to be tested. The main control chip is connected to the touch driver IC on the screen to be tested through the IIC interface or the SPI interface. When the staff's finger or the touch test equipment touches a certain point on the display screen of the screen to be tested, the capacitance value of the point where the display screen is touched will change. The touch driver IC of the screen to be tested senses the change in capacitance value of the point and records the coordinate information of the point, and sends the coordinate information of the point to the main control chip. The system collects the coordinate information in real time and matches it with the screen plane coordinate system map, and displays the coordinate position on the display unit in a way of filling the screen plane coordinate system map. When the stroke track covers the entire display screen surface, the staff can intuitively know whether the touch function of the display screen is normal by observing whether the screen plane coordinate system map on the display unit is filled.
[0032] The above-mentioned screen inspection test system and test method supporting screen interfaces of various specifications have obvious advantages and beneficial effects compared with the prior art. Specifically, it can be seen from the above-mentioned technical scheme that it is mainly through setting a central processing module, and a storage module, a current monitoring module, a human-computer interaction module, a connection module and a power supply module respectively connected to the central processing module. The current monitoring module is connected to the connection module. The connection module includes a connection board of multiple interface specifications, which is used to connect the screen to be tested of the corresponding interface specifications, and store the current thresholds, display test programs and touch test programs of the screen to be tested of each interface specification in the storage module. It connects touch screens of multiple interface specifications through non-corresponding adapter boards, crosses the boundaries of various interface protocols, and can universally test MIPI C / D PHY, eDP, LVDS, HDMI, IIC, SPI and other interface screens can be used for multiple purposes. One testing device can be used to test screens of various specifications, which can greatly reduce the expenses of enterprises in purchasing screen testing equipment when producing various screens. At the same time, it can also improve production testing efficiency and save space in dust-free workshops. It kills two birds with one stone, making screen testing efficient and convenient, improving screen testing efficiency, reducing equipment procurement and maintenance costs, and improving equipment utilization.
[0033] It should be noted that the present invention is not limited to the above-mentioned embodiments. Based on the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made based on the creative spirit of the present invention should be included in the scope of protection required by the present invention.
Claims
1. A screen inspection test system supporting screen interfaces of various specifications, characterized in that: include: A central processing module, and a storage module, a current monitoring module, a human-computer interaction module, a connection module and a power supply module respectively connected to the central processing module, wherein the current monitoring module is connected to the connection module via the central processing module; The connection module includes connection boards of multiple interface specifications, which are used to connect the screens to be tested of corresponding interface specifications; the connection board is connected to the central processing module through a power supply voltage circuit, a video signal bus, and an IIC or SPI interface bus; The central processing module includes a main control chip and an identification module, wherein the identification module is used to obtain the model of the screen to be tested and also to determine whether the connection board connected to the screen to be tested matches; The storage module is used to store the current thresholds of various channels of the screen to be tested of various interface specifications, the display test program and the touch test program, the display test program is used to test the display function of the screen to be tested, and the touch test program is used to test the touch function of the screen to be tested; The current monitoring module is used to monitor the current values of each channel of the screen to be tested in real time during the test; The human-computer interaction module includes a display unit and an input unit, wherein the display unit is used to display the current value obtained by the current monitoring module in real time, and the input unit includes a button, which is used to trigger a corresponding operation program; The power supply module is used to provide power to the screen inspection test system and the screen to be tested.
2. The screen inspection test system supporting screen interfaces of various specifications as claimed in claim 1, characterized in that: The human-computer interaction module also includes an audio interface, which is connected to the central processing module. The input unit also includes a WIFI module, an SD card module, a Type C interface and a USB interface, which are respectively connected to the main control chip.
3. The screen inspection test system supporting screen interfaces of various specifications as claimed in claim 1, characterized in that: The storage module includes an eMMC memory, a RAM memory and a ROM memory.
4. A screen inspection test method supporting screen interfaces of various specifications, characterized in that: The screen inspection test system supporting screen interfaces of various specifications as claimed in any one of claims 1 to 3 has the following test steps: S100, performing system initialization operation; S200, connecting the screen to be tested via the connecting board; S300, supplying power to the connection board through the power module to obtain current values of various channels of the screen to be tested; S400, identifying whether the connection board matches the model of the screen to be tested; if they match, proceeding to step S500; S500, the main control chip retrieves and executes the display test program matching the model of the screen to be tested from the storage module to perform a screen display test; S600: The main control chip retrieves from the storage module and executes the touch test program that matches the model of the screen to be tested to perform a screen touch test.
5. The screen inspection test method supporting screen interfaces of various specifications as claimed in claim 4, characterized in that: In step S300, the following steps are included: S310, the current monitoring module detects whether the power switch of the power module supplying power to the connection board is turned on; if it is turned on, enter step S320; S320, the current monitoring module obtains the current values of each channel of the screen to be tested through the connection board and sends them to the main control chip, and displays the current values of each channel through the display unit; S330, the main control chip compares the obtained current values of each channel with the current thresholds of each channel pre-stored in the storage module, and determines whether the obtained current values of each channel of the screen to be tested meet the current thresholds of each channel; if so, return to step S320, if not, enter step S340; S340: The main control chip cuts off the power supply of the screen to be tested and gives a prompt through the display unit.
6. The screen inspection test method supporting screen interfaces of various specifications as claimed in claim 4, characterized in that: In step S400, the following steps are included: S410, the identification module obtains the model of the screen to be tested and the IO pin code of the connection board connected to the screen to be tested; S420, the identification module determines whether the model of the screen to be tested matches the connection board according to the acquired model of the screen to be tested and the IO pin code of the connection board; if so, enter step S430; if not, prompt the staff member through the display unit that the connection board is connected incorrectly, and cut off the power supply of the screen to be tested; S430, the identification module sends a display test instruction to the main control chip, and after receiving the display test instruction, the main control chip provides corresponding voltage outputs to the screen to be tested through the power supply voltage circuit.
7. The screen inspection test method supporting screen interfaces of various specifications as claimed in claim 6, characterized in that: In step S500, the following steps are included: S510, after the main control chip obtains the display test instruction, it retrieves the display test program and the picture data and / or video data corresponding to the model of the screen to be tested from the eMMC memory and stores them in the RAM memory; S520. The main control chip converts the image data and / or video data into a corresponding image format and / or video format according to the acquired model of the screen to be tested; S530, the main control chip obtains the interface protocol corresponding to the model of the screen to be tested, and outputs the converted picture data and / or video data to the screen to be tested through the connection module according to the interface protocol; S540, after receiving the picture data and / or video data, the screen to be tested displays the picture data and / or video data; S550, after the display of the image data and / or video data is completed, the staff confirms the display result by clicking the button; if the image data and / or video data cannot be displayed correctly, click to confirm as a defective product; if the image data and / or video data can be displayed correctly, click to confirm as a good product, and at the same time, the human-computer interaction module sends a touch test instruction to the main control chip.
8. The screen inspection test method supporting screen interfaces of various specifications as claimed in claim 7, characterized in that: In step S600, the following steps are included: S610, after the main control chip obtains the touch test instruction, it retrieves the touch test program corresponding to the model of the screen to be tested from the eMMC memory and stores it in the RAM memory; the touch test program includes a screen plane coordinate system map corresponding to the screen to be tested; S620, the staff performs a line drawing operation on the display screen surface of the screen to be tested by using a finger or a touch test device, and the line drawing track covers the entire display screen surface of the screen to be tested; S630, the touch driver IC on the screen to be tested senses the change in the capacitance value of the display screen and records the coordinate value of the point; S640, the main control chip obtains the coordinate value of the capacitance value change of the screen to be tested; S650: The main control chip determines whether the touch function of the screen to be tested is normal or abnormal according to whether the acquired coordinate values fill up the screen plane coordinate system map, and reminds the staff through the display unit.
9. The screen inspection test method supporting screen interfaces of various specifications as claimed in claim 4, characterized in that: In step S600, a multi-touch test is also included.