Test system and method for display module

Abstract

The invention discloses a display module testing system and method, and particularly relates to the field of electronic equipment testing. Comprising a system central processor module, a system operation database, a user information terminal, a test signal generation module, an image information acquisition and test module, a data processing and analysis center, a display module comprehensive judgment module and a result output module. Through deep mining and processing of collected rich data, a systematic and accurate mathematical model is innovatively constructed, and the model organically integrates five core dimensions of response time information, power consumption information, optical performance information, touch function information and function switching information of a display module. And three-dimensional and comprehensive evaluation of the performance of the display module is achieved. Through the construction of the comprehensive model, the accuracy and integrity of evaluation are remarkably enhanced, so that a user can more accurately understand the effect and influence of the display module test system on the performance of the display module.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment testing, and more specifically, to a testing system and method for a display module. Background Art

[0002] In modern electronic devices, the performance of display modules plays a vital role in user experience. Whether it is the convenient use of smartphones, the diverse functions of tablets, the work needs of laptops and desktops, the home entertainment of smart TVs, or the professional applications of medical and industrial equipment, display modules act as key windows. Their resolution, color, response speed, etc. affect information acquisition, visual perception, and operational accuracy, laying the foundation for user experience in various scenarios. Their importance cannot be underestimated.

[0003] At the same time, in the manufacturing process of display modules, in order to ensure product quality and production efficiency, efficient and accurate testing systems and methods are required. On large-scale production lines, a large number of display modules need to be tested every day. Traditional manual testing methods are not only inefficient, but also easily affected by human factors, resulting in inaccurate and inconsistent test results. Therefore, automated and intelligent testing systems came into being.

[0004] However, there are still some shortcomings in its actual use. For example, most of the existing technologies only focus on the detection of a single or a few performance aspects, lacking a comprehensive and accurate evaluation of the multi-dimensional performance of the display module. Some test methods only focus on display quality, but ignore the performance of power consumption, touch function, and function switching. Or when evaluating a certain performance, key factors such as stability and accuracy are not considered in depth. This makes it difficult for the existing technology to comprehensively and objectively measure the actual performance of the display module in different application scenarios, and cannot meet the current diverse market needs and high-precision product quality requirements. Therefore, there is an urgent need for an innovative technical solution to fill this technical gap and achieve a comprehensive and accurate evaluation of the performance of the display module. Summary of the invention

[0005] In order to overcome the above defects of the prior art, an embodiment of the present invention provides a display module testing system and method, which solves the problems raised in the above background technology through the following scheme.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a test system for a display module, comprising a system central processing unit module, a system operation database, a user information terminal, a test signal generation module, an image information acquisition and testing module, a data processing and analysis center, a display module comprehensive judgment module and a result output module.

[0007] The system operation database includes all data texts of a test system of a display module, and collects information texts output by each module in real time. The system central processor module is used to centrally control the information text instructions output by each module. The user information terminal is an information output device for receiving a test system of a display module. The test signal generation module is constructed based on a high-performance programmable logic device and is capable of generating various test signals, including video signals of different resolutions, frame rates, and grayscales, as well as control signals for triggering various functional operations of the display module; The image information acquisition and testing module includes an image data acquisition unit, a power data acquisition unit and a touch data acquisition unit, which are used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The data processing and analysis center is used to fill missing values, delete abnormal values, and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into a mathematical model of a display response time comprehensive coefficient, a mathematical model of a display power consumption comprehensive coefficient, a mathematical model of a display optical performance coefficient, a mathematical model of a touch function comprehensive coefficient, a mathematical model of a function switching comprehensive coefficient, and a mathematical model of a display module comprehensive performance coefficient, and process and analyze the data to obtain a text output value based on the second characteristic text of the display module; The display module comprehensive judgment module is used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; The result output module is used to import the judgment information and text output value of the display module into the user information terminal.

[0008] Preferably, the first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, full white and full black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, bad pixel number parameter, touch pressure sensitivity accuracy parameter, touch pressure sensitivity average accuracy parameter, touch pressure sensitivity stability parameter, touch pressure sensitivity average stability parameter, refresh rate switching speed parameter, refresh rate switching time jitter parameter, refresh rate switching average time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, resolution switching average time jitter parameter; The average grayscale response time parameter refers to the average grayscale response time ; The dynamic picture response time parameter refers to the dynamic picture response time ; The grayscale rise time parameter refers to the grayscale rise time ; The grayscale rise average time parameter refers to the grayscale rise average time ; The grayscale fall time parameter refers to the grayscale fall time ; The grayscale falling average time parameter refers to the grayscale falling average time ; The black screen power consumption parameter refers to the black screen power consumption ; The average power consumption parameters of different pure color static pictures refer to the average power consumption of different pure color static pictures. ; The different frame rate video playback power consumption parameters refer to different frame rate video playback power consumption ; The average power consumption parameter for playing videos at different frame rates refers to the average power consumption for playing videos at different frame rates. ; The power consumption parameters for playing videos with different resolutions refer to the power consumption parameters for playing videos with different resolutions. ; The average power consumption parameter for playing videos with different resolutions refers to the average power consumption for playing videos with different resolutions ; The power consumption parameters under different brightness settings refer to the power consumption under different brightness settings. ; The theoretical power consumption parameters under different brightness settings refer to the theoretical power consumption under different brightness settings. ; The full white and full black contrast parameter refers to the full white and full black contrast ; The brightness uniformity standard deviation parameter refers to the brightness uniformity standard deviation ; The average brightness parameter refers to the average brightness ; The color deviation parameter at different viewing angles refers to the color deviation at different viewing angles. ; The average color deviation parameter at different viewing angles refers to the average color deviation at different viewing angles. ; The brightness parameters at different viewing angles refer to the brightness at different viewing angles. ; The average brightness parameter at different viewing angles refers to the average brightness at different viewing angles. ; The touch response time parameter refers to the touch response time ; The bad pixel number parameter refers to the bad pixel number ; The touch pressure sensitivity accuracy parameter refers to the touch pressure sensitivity accuracy ; The touch pressure sensitivity average accuracy parameter refers to the touch pressure sensitivity average accuracy ; The touch pressure sensitivity stability parameter refers to the touch pressure sensitivity stability ; The touch pressure sensitivity average stability parameter refers to the touch pressure sensitivity average stability ; The refresh rate switching speed parameter refers to the refresh rate switching speed ; The refresh rate switching time jitter parameter refers to the refresh rate switching time jitter ; The refresh rate switching average time jitter parameter refers to the refresh rate switching average time jitter ; The resolution switching speed parameter refers to the resolution switching speed ; The resolution switching time jitter parameter refers to the resolution switching time jitter ; The resolution switching average time jitter parameter refers to the resolution switching average time jitter .

[0009] Preferably, the touch pressure sensitivity accuracy It is the error value between each test pressure value and the display module response. is the average value of all test samples, and the specific collection method is as follows: Use a touch tool with a pressure sensor to apply different pressure values ​​to the display module For each pressure value, the actual brightness value is measured according to the pressure-brightness relationship preset by the display module. , and calculate the theoretical brightness value The error value of each test is = After x tests, the average value is calculated. = ; The touch pressure sensitivity stability It is the coefficient of variation of the brightness value of the display module under multiple operations with the same pressure. is the average value of all test samples, and the specific collection method is as follows: Apply a fixed pressure value to the display module , repeat the touch operation n times, and record the response value of the display module each time , j = 1, 2, ..., n. Calculate the average of these n response values = , and then calculate the coefficient of variation as a value, = After z times of the same stress test, the average value is calculated to obtain .

[0010] Preferably, the mathematical model of the display response time comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time of grayscale decline, n and m refer to constants; Preferably, the mathematical model of the display power consumption comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, p, q, r are constants; Preferably, the mathematical model for displaying the optical performance coefficient is as follows: =0.2 ; in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, t and v refer to constants; Preferably, the mathematical model of the touch function comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, x and z refer to constants; Preferably, the mathematical model of the function switching comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, and b and d are constants.

[0011] Preferably, the mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching.

[0012] Preferably, a method for testing a display module comprises: S1 test signal generation step: based on a high-performance programmable logic device, it is capable of generating various test signals, including video signals of different resolutions, frame rates, and grayscales, and control signals for triggering various functional operations of the display module; S2 image information acquisition and testing step: including image data acquisition step, power data acquisition step and touch data acquisition step, which is used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, full white and full black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, bad pixel number parameter, touch pressure sensitivity accuracy parameter, touch pressure sensitivity average accuracy parameter, touch pressure sensitivity stability parameter, touch pressure sensitivity average stability parameter, refresh rate switching speed parameter, refresh rate switching time jitter parameter, refresh rate switching average time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, resolution switching average time jitter parameter; S3 data processing and analysis step: used to fill missing values, delete outliers and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into the mathematical model of the display response time comprehensive coefficient, the mathematical model of the display power consumption comprehensive coefficient, the mathematical model of the display optical performance coefficient, the mathematical model of the touch function comprehensive coefficient, the mathematical model of the function switching comprehensive coefficient and the mathematical model of the display module comprehensive performance coefficient, and process and analyze them to obtain a text output value based on the second characteristic text of the display module; The mathematical model of the display response time comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time of grayscale decline, n and m refer to constants; The mathematical model of the display power consumption comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, p, q, r are constants; The mathematical model of the display optical performance coefficient is specifically as follows: =0.2 ; in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, t and v refer to constants; The mathematical model of the touch function comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, x and z refer to constants; The mathematical model of the function switching comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, b and d refer to constants; The mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching; S4 display module comprehensive judgment step: used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; S5 result output step: used to import the judgment information and text output value of the display module into the user information terminal.

[0013] Technical effects and advantages of the present invention: The present invention collects the display module test information library, accurately extracts various performance parameter elements therein, obtains key indicator information for evaluating the display module performance, and integrates and comprehensively analyzes these multi-dimensional indicator information. The present invention can perform all-round detection and evaluation of the display module performance with extremely high accuracy and comprehensiveness, and can detect potential performance defects in a timely manner, providing a scientific basis for optimizing the design and production process of the display module, improving the display quality and user experience, thereby improving the effectiveness and accuracy of the display module test system; The present invention innovatively constructs a systematic and accurate mathematical model by deeply mining and processing the rich data collected. The model organically integrates the five core dimensions of the display module's response time information, power consumption information, optical performance information, touch function information, and function switching information, achieving a three-dimensional and comprehensive evaluation of the display module's performance. Through the construction of this comprehensive model, the present invention significantly enhances the accuracy and completeness of the evaluation, while providing users with a clear and quantitative tool that enables users to more accurately understand the role and impact of the display module test system on the display module's performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the method of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] As attached Figure 1 A display module testing system shown includes a system central processing unit module, a system operation database, a user information terminal, a test signal generation module, an image information acquisition and testing module, a data processing and analysis center, a display module comprehensive judgment module and a result output module.

[0017] The system operation database includes all data texts of a test system of a display module, and collects information texts output by each module in real time. The system central processor module is used to centrally control the information text instructions output by each module. The user information terminal is an information output device for receiving a test system of a display module. The output end of the test signal generation module is connected to the input end of the image information acquisition and test module, the output end of the image information acquisition and test module is connected to the input end of the data processing and analysis center, the output end of the data processing and analysis center is connected to the input end of the display module comprehensive judgment module, the output end of the display module comprehensive judgment module is connected to the input end of the result output module, and the output end of the result output module is connected to the input end of the interactive feedback module.

[0018] The test signal generation module is constructed based on a high-performance programmable logic device and is capable of generating various test signals, including video signals of different resolutions, frame rates, and grayscales, as well as control signals for triggering various functional operations of the display module; It should be specifically noted that the various functional operations of the display module include brightness adjustment, refresh rate switching, touch function testing, etc., which are used to implement the preset test scheme, and are not specifically limited in this embodiment; It should be specifically explained in this embodiment that the test signal generation module can flexibly adjust the signal parameters according to the test requirements and work in coordination with other test units to ensure the automation and accuracy of the test process. For example, when testing the grayscale response time, it can accurately generate a video signal containing a specific grayscale conversion sequence to drive the display module to perform corresponding display changes, thereby providing an accurate signal source for subsequent data acquisition; The image information acquisition and testing module includes an image data acquisition unit, a power data acquisition unit and a touch data acquisition unit, which are used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The first characteristic text of the display module in the step of mining the key elements of power battery performance in the preferred technical solution of this application is as follows: It should be specifically explained in this embodiment that the first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, all-white and all-black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, number of bad pixels parameter, touch pressure sensitivity accuracy parameter, average accuracy parameter of touch pressure sensitivity, touch pressure sensitivity stability parameter, average stability parameter of touch pressure sensitivity, refresh rate switching speed parameter, refresh rate switching time jitter parameter, average refresh rate switching time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, average resolution switching time jitter parameter; The average grayscale response time parameter refers to the average grayscale response time ; The dynamic picture response time parameter refers to the dynamic picture response time ; The grayscale rise time parameter refers to the grayscale rise time ; The grayscale rise average time parameter refers to the grayscale rise average time ; The grayscale fall time parameter refers to the grayscale fall time ; The grayscale falling average time parameter refers to the grayscale falling average time ; The black screen power consumption parameter refers to the black screen power consumption ; The average power consumption parameters of different pure color static pictures refer to the average power consumption of different pure color static pictures. ; The different frame rate video playback power consumption parameters refer to different frame rate video playback power consumption ; The average power consumption parameter for playing videos at different frame rates refers to the average power consumption for playing videos at different frame rates. ; The power consumption parameters for playing videos with different resolutions refer to the power consumption parameters for playing videos with different resolutions. ; The average power consumption parameter for playing videos with different resolutions refers to the average power consumption for playing videos with different resolutions ; The power consumption parameters under different brightness settings refer to the power consumption under different brightness settings. ; The theoretical power consumption parameters under different brightness settings refer to the theoretical power consumption under different brightness settings. ; The full white and full black contrast parameter refers to the full white and full black contrast ; The brightness uniformity standard deviation parameter refers to the brightness uniformity standard deviation ; The average brightness parameter refers to the average brightness ; The color deviation parameter at different viewing angles refers to the color deviation at different viewing angles. ; The average color deviation parameter at different viewing angles refers to the average color deviation at different viewing angles. ; The brightness parameters at different viewing angles refer to the brightness at different viewing angles. ; The average brightness parameter at different viewing angles refers to the average brightness at different viewing angles. ; The touch response time parameter refers to the touch response time ; The bad pixel number parameter refers to the bad pixel number ; The touch pressure sensitivity accuracy parameter refers to the touch pressure sensitivity accuracy ; The touch pressure sensitivity average accuracy parameter refers to the touch pressure sensitivity average accuracy ; The touch pressure sensitivity stability parameter refers to the touch pressure sensitivity stability ; The touch pressure sensitivity average stability parameter refers to the touch pressure sensitivity average stability ; The refresh rate switching speed parameter refers to the refresh rate switching speed ; The refresh rate switching time jitter parameter refers to the refresh rate switching time jitter ; The refresh rate switching average time jitter parameter refers to the refresh rate switching average time jitter ; The resolution switching speed parameter refers to the resolution switching speed ; The resolution switching time jitter parameter refers to the resolution switching time jitter ; The resolution switching average time jitter parameter refers to the resolution switching average time jitter ; It should be specifically explained in this embodiment that the average grayscale response time refers to the average time required for the pixel brightness to reach a certain specific ratio of the final brightness, such as 90%, when changing from one grayscale to another, reflecting the response speed of the display module to the grayscale change. The specific collection method is as follows: By sending a video signal containing a specific grayscale conversion to the display module, such as conversion from black to white, from white to black, or between different grayscales, a high-speed photodetector is used. The response time of the high-speed photodetector should be much smaller than the response time of the display module to monitor the change in pixel brightness, record the time point from the start of the grayscale conversion to the point when the pixel brightness reaches a specific proportion of the final brightness, and average the test results of multiple grayscale conversions to obtain ; The dynamic picture response time specifically refers to the time required for a pixel to switch from one state to another when displaying a dynamic picture. It is used to evaluate the performance of the display module when processing dynamic images. The specific collection method is as follows: Play dynamic videos containing high-speed moving objects, such as racing game videos or fast-moving geometric graphics videos, and use high-speed cameras to shoot the display module screen. Determine the response time by analyzing the brightness changes of the edge pixels of the moving objects in the video frame, and compare the start and end times of the brightness changes of the edge pixels of the objects in adjacent frames to calculate the response time. ; The gray scale rise time is the i-th grayscale rise time sample, that is, the time taken for the pixel brightness to rise from the initial brightness to the preset proportion of the final brightness when rising from a low grayscale to a high grayscale. It refers to the average value of all grayscale rise time samples. The collection method is as follows: Similar to collecting the average grayscale response time, a series of conversion signals from low grayscale to high grayscale are sent, and the grayscale rise time is recorded each time as a After performing n different grayscale up-conversion tests, calculate all The average value of ; The gray scale fall time is the i-th grayscale drop time sample, that is, the time taken for the pixel brightness to drop from the initial brightness to the preset ratio of the final brightness when dropping from a high grayscale to a low grayscale. is the average value of all grayscale fall time samples; The black screen power consumption specifically refers to the electric power consumed by the display module in the black screen state, which is used to evaluate the energy consumption of the display module in the standby or non-working state; The average power consumption of different pure color static images specifically refers to the average value of the power consumed by the display module when displaying different pure colors, such as red, green, blue, white, black and other static images, which is used to measure the power consumption of the display module when displaying simple static images. The specific collection method is as follows: The display module is allowed to display various pure color static images in turn, and the power consumption at each time is measured using a high-precision power meter. , i represents different pure colors, and then the average power consumption of all pure colors is calculated to obtain = ,in Refers to the number of pure color types; The power consumption of video playback at different frame rates is the jth power consumption sample of video playback with different frame rates, that is, the power consumed by the display module when playing a video with a specific frame rate. It is the average value of all power consumption samples of video playback at different frame rates. The specific collection method is as follows: Play a series of videos with different frame rates, such as 30Hz, 60Hz, and 120Hz. When playing each frame rate video, use a high-precision power meter to measure the power consumption of the display module as a After measuring the power consumption of videos played at different frame rates p times, the average value is calculated to obtain = ; The power consumption of video playback with different resolutions is the jth power consumption sample of different resolution video playback, that is, the power consumed by the display module when playing a video with a specific resolution. It is the average value of all power consumption samples of video playback with different resolutions. The specific collection method is as follows: Play videos of different resolutions, such as 720p, 1080p, 4K, etc. When playing each resolution video, use a high-precision power meter to measure the power consumption as a After measuring the power consumption of videos played at different resolutions q times, the average value is calculated to obtain = ; Power consumption at different brightness settings is the power consumption sample under the lth different brightness settings, It is the theoretical power consumption value at the corresponding brightness obtained by fitting the relationship curve between brightness and power consumption. The specific collection method is as follows: The brightness of the display module is set to different levels, and the power consumption is measured each time as a By measuring at multiple brightness points, a curve of the relationship between brightness and power consumption is constructed through polynomial fitting, and the theoretical power consumption value at each brightness setting is calculated based on the curve. , the number of samples r depends on the number of divisions of brightness levels; The full white and full black contrast Refers to the ratio of the brightness of the display module when it displays a full white screen and a full black screen. It is used to measure the difference between the brightest and darkest states that the display module can present. The specific collection method is as follows: First, let the display module display a full white screen and use a brightness meter to measure the brightness at this time. , then let the display module display a completely black screen and measure the brightness , and then calculate the contrast = ; The brightness uniformity standard deviation Used to measure the uniformity of brightness distribution on the display module screen. It is the average brightness of all pixels on the screen, and the collection method is as follows: The brightness of the entire screen of the display module is scanned by a high-precision brightness imager to obtain the brightness value of each pixel , i and j represent the position coordinates of the pixel on the screen, and the average brightness of all pixels is calculated to get the average brightness = , where M and N are the number of pixels in the horizontal and vertical directions of the screen, respectively, and then calculate the standard deviation of brightness uniformity = ; Said is the color deviation sample at the s-th viewing angle, and is an indicator to measure the color accuracy of the display module at different viewing angles. It is the average value of color deviation samples under all viewing angles. The specific collection method is as follows: The display module is fixed in one position, and samples are taken at different angles, such as from -80° to +80° horizontally and from -60° to +60° vertically, at certain angle intervals. The color deviation of the standard color test chart displayed by the display module is measured using a color analyzer. After t times of measurement at different viewing angles, the average value is calculated to obtain = ; Brightness at different viewing angles is the brightness sample at the u-th viewing angle, and is the average value of the brightness samples at all viewing angles The specific collection method is as follows: Use a brightness meter to measure the brightness of the display module at different viewing angles as a After measuring the brightness at different viewing angles v times, the average value is calculated to obtain = ; The number of bad pixels The collection method is as follows: Let the display module display pure colors such as red, green, blue, white, and black. Use a high-resolution industrial camera to capture the screen image. Then use image analysis software to compare the pixel value in the image with the normal pixel value range pixel by pixel. If the pixel value exceeds the normal range, it is determined to be a bad pixel. The number of bad pixels is counted to obtain .

[0019] The touch pressure sensitivity accuracy It is the error value between each test pressure value and the display module response. is the average value of all test samples, and the specific collection method is as follows: Use a touch tool with a pressure sensor to apply different pressure values ​​to the display module For each pressure value, the actual brightness value is measured according to the pressure-brightness relationship preset by the display module. , and calculate the theoretical brightness value The error value of each test is = After x tests, the average value is calculated. = ; The touch pressure sensitivity stability It is the coefficient of variation of the brightness value of the display module under multiple operations with the same pressure. is the average value of all test samples, and the specific collection method is as follows: Apply a fixed pressure value to the display module , repeat the touch operation n times, and record the response value of the display module each time , j = 1, 2, ..., n. Calculate the average of these n response values = , and then calculate the coefficient of variation as a value, = After z times of the same stress test, the average value is calculated to obtain ; The refresh rate switching time jitter The collection methods are as follows: Perform multiple refresh rate switching operations, and use a high-precision timer to record the time jitter during the switching process each time, that is, the deviation between the actual switching time and the average switching time as a After b tests, the average value is calculated to obtain ; The data processing and analysis center is used to fill missing values, delete abnormal values, and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into a mathematical model of a display response time comprehensive coefficient, a mathematical model of a display power consumption comprehensive coefficient, a mathematical model of a display optical performance coefficient, a mathematical model of a touch function comprehensive coefficient, a mathematical model of a function switching comprehensive coefficient, and a mathematical model of a display module comprehensive performance coefficient, and process and analyze the data to obtain a text output value based on the second characteristic text of the display module; The mathematical model of the display response time comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time of grayscale decline, n and m refer to constants; The mathematical model of the display power consumption comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, p, q, r are constants; The mathematical model of the display optical performance coefficient is specifically as follows: =0.2 ; in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, t and v refer to constants; The mathematical model of the touch function comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, x and z refer to constants; The mathematical model of the function switching comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, b and d refer to constants; The mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching; The display module comprehensive judgment module is used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; It should be specifically explained in this embodiment that the preset value is obtained based on a large amount of experimental data and in-depth analysis of industry standards, and is intended to evaluate the critical threshold of the display module's response time accuracy, power consumption rationality, optical display quality, touch function sensitivity, function switching smoothness, and overall performance stability under the established test standards. When the display module comprehensive performance evaluation coefficient value output by the system is lower than this preset value, it means that the display module has a long response time, high power consumption, defective optical display, insensitive touch function, stuck function switching, and unstable overall performance under the current design and production process level, and the design parameters, production process, or component selection of the display module need to be adjusted and optimized. For example, in terms of response time, the preset value can be set according to the user's minimum acceptable standard for picture smoothness in different application scenarios. If the average grayscale response time exceeds a specific number of milliseconds, it is considered that the response time accuracy does not meet the requirements; in terms of power consumption, refer to the average power consumption level and energy-saving standards of similar products, and set an upper limit on power consumption as the preset value. If the power consumption of the display module exceeds this value, it is judged that the rationality of its power consumption is poor; for optical display quality, based on professional standards such as color accuracy, contrast, and brightness uniformity, determine the minimum acceptable value of each indicator as the preset value. If the display module is lower than the preset value in these indicators, it indicates that there are defects in the optical display; the touch function sensitivity can set the preset value according to the maximum allowable value of the touch response time and the error range of the touch pressure sensitivity; the function switching smoothness is determined by the preset value of the maximum allowable delay time of the refresh rate switching speed and the resolution switching speed.

[0020] The result output module is used to import the judgment information and text output value of the display module into the user information terminal; The text output value includes a display module comprehensive performance coefficient, a display response time comprehensive coefficient, a display power consumption comprehensive coefficient, a display optical performance coefficient, a touch function comprehensive coefficient, and a function switching comprehensive coefficient; As attached Figure 2 A method for testing a display module is shown, comprising: S1 test signal generation step: Based on high-performance programmable logic devices, it can generate various test signals, including video signals with different resolutions, frame rates, and grayscales, as well as control signals for triggering various functional operations of the display module; S2 image information acquisition and testing step: including image data acquisition step, power data acquisition step and touch data acquisition step, which is used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, full white and full black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, bad pixel number parameter, touch pressure sensitivity accuracy parameter, touch pressure sensitivity average accuracy parameter, touch pressure sensitivity stability parameter, touch pressure sensitivity average stability parameter, refresh rate switching speed parameter, refresh rate switching time jitter parameter, refresh rate switching average time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, resolution switching average time jitter parameter; S3 data processing and analysis step: used to fill missing values, delete outliers and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into the mathematical model of the display response time comprehensive coefficient, the mathematical model of the display power consumption comprehensive coefficient, the mathematical model of the display optical performance coefficient, the mathematical model of the touch function comprehensive coefficient, the mathematical model of the function switching comprehensive coefficient and the mathematical model of the display module comprehensive performance coefficient, and process and analyze them to obtain a text output value based on the second characteristic text of the display module; The mathematical model of the display response time comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time of grayscale decline, n and m refer to constants; The mathematical model of the display power consumption comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, p, q, r are constants; The mathematical model of the display optical performance coefficient is specifically as follows: =0.2 ; in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, t and v refer to constants; The mathematical model of the touch function comprehensive coefficient is as follows: = + ; in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, x and z refer to constants; The mathematical model of the function switching comprehensive coefficient is as follows: ; in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, b and d refer to constants; The mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching; S4 display module comprehensive judgment step: used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; The preset value is obtained based on a large amount of experimental data and in-depth analysis of industry standards, and is intended to evaluate the critical threshold of the display module's response time accuracy, power consumption rationality, optical display quality, touch function sensitivity, function switching smoothness, and overall performance stability under the established test standards. When the display module comprehensive performance evaluation coefficient value output by the system is lower than this preset value, it means that the display module has a long response time, high power consumption, optical display defects, insensitive touch function, function switching jams, and overall unstable performance under the current design and production process level, and the design parameters, production process, or component selection of the display module need to be adjusted and optimized. For example, in terms of response time, the preset value can be set according to the minimum acceptable standard of the user for the smoothness of the picture in different application scenarios. If the average grayscale response time exceeds a certain number of milliseconds, it is considered that the response time accuracy does not meet the requirements; in terms of power consumption, refer to the average power consumption level and energy-saving standards of similar products to set an upper limit of power consumption as the preset value. If the power consumption of the display module exceeds this value, it is judged that the rationality of its power consumption is poor; for optical display quality, according to professional standards such as color accuracy, contrast, and brightness uniformity, the minimum acceptable value of each indicator is determined as the preset value. If the display module is lower than the preset value in these indicators, it indicates that there are defects in the optical display; the touch function sensitivity can be set according to the maximum allowable value of the touch response time and the error range of the touch pressure sensitivity. The function switching smoothness is determined by the maximum allowable delay time of the refresh rate switching speed and the resolution switching speed. S5 result output step: used to import the judgment information and text output value of the display module into the user information terminal; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A display module testing system, characterized in that: include: System central processing unit module, system operation database, user information terminal, test signal generation module, image information acquisition and testing module, data processing and analysis center, display module comprehensive judgment module and result output module; The system operation database includes all data texts of a test system of a display module, and collects information texts output by each module in real time. The system central processor module is used to centrally control the information text instructions output by each module. The user information terminal is an information output device for receiving a test system of a display module. The test signal generation module is constructed based on a high-performance programmable logic device and is capable of generating various test signals, including video signals of different resolutions, frame rates, and grayscales, as well as control signals for triggering various functional operations of the display module; The image information acquisition and testing module includes an image data acquisition unit, a power data acquisition unit and a touch data acquisition unit, which are used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The data processing and analysis center is used to fill missing values, delete abnormal values, and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into a mathematical model of a display response time comprehensive coefficient, a mathematical model of a display power consumption comprehensive coefficient, a mathematical model of a display optical performance coefficient, a mathematical model of a touch function comprehensive coefficient, a mathematical model of a function switching comprehensive coefficient, and a mathematical model of a display module comprehensive performance coefficient, and process and analyze the data to obtain a text output value based on the second characteristic text of the display module; The display module comprehensive judgment module is used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; The result output module is used to import the judgment information and text output value of the display module into the user information terminal.

2. A display module testing system according to claim 1, characterized in that: The first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, full white and full black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, bad pixel number parameter, touch pressure sensitivity accuracy parameter, touch pressure sensitivity average accuracy parameter, touch pressure sensitivity stability parameter, touch pressure sensitivity average stability parameter, refresh rate switching speed parameter, refresh rate switching time jitter parameter, refresh rate switching average time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, resolution switching average time jitter parameter; The average grayscale response time parameter refers to the average grayscale response time ; The dynamic picture response time parameter refers to the dynamic picture response time ; The grayscale rise time parameter refers to the grayscale rise time ; The grayscale rise average time parameter refers to the grayscale rise average time ; The grayscale fall time parameter refers to the grayscale fall time ; The grayscale falling average time parameter refers to the grayscale falling average time ; The black screen power consumption parameter refers to the black screen power consumption ; The average power consumption parameters of different pure color static pictures refer to the average power consumption of different pure color static pictures. ; The different frame rate video playback power consumption parameters refer to different frame rate video playback power consumption ; The average power consumption parameter for playing videos at different frame rates refers to the average power consumption for playing videos at different frame rates. ; The power consumption parameters for playing videos with different resolutions refer to the power consumption parameters for playing videos with different resolutions. ; The average power consumption parameter for playing videos with different resolutions refers to the average power consumption for playing videos with different resolutions ; The power consumption parameters under different brightness settings refer to the power consumption under different brightness settings. ; The theoretical power consumption parameters under different brightness settings refer to the theoretical power consumption under different brightness settings. ; The full white and full black contrast parameter refers to the full white and full black contrast ; The brightness uniformity standard deviation parameter refers to the brightness uniformity standard deviation ; The average brightness parameter refers to the average brightness ; The color deviation parameter at different viewing angles refers to the color deviation at different viewing angles. ; The average color deviation parameter at different viewing angles refers to the average color deviation at different viewing angles. ; The brightness parameters at different viewing angles refer to the brightness at different viewing angles. ; The average brightness parameter at different viewing angles refers to the average brightness at different viewing angles. ; The touch response time parameter refers to the touch response time ; The bad pixel number parameter refers to the bad pixel number ; The touch pressure sensitivity accuracy parameter refers to the touch pressure sensitivity accuracy ; The touch pressure sensitivity average accuracy parameter refers to the touch pressure sensitivity average accuracy ; The touch pressure sensitivity stability parameter refers to the touch pressure sensitivity stability ; The touch pressure sensitivity average stability parameter refers to the touch pressure sensitivity average stability ; The refresh rate switching speed parameter refers to the refresh rate switching speed ; The refresh rate switching time jitter parameter refers to the refresh rate switching time jitter ; The refresh rate switching average time jitter parameter refers to the refresh rate switching average time jitter ; The resolution switching speed parameter refers to the resolution switching speed ; The resolution switching time jitter parameter refers to the resolution switching time jitter ; The resolution switching average time jitter parameter refers to the resolution switching average time jitter .

3. The display module testing system according to claim 1, characterized in that: The mathematical model of the display response time comprehensive coefficient is as follows: = + ； in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time for grayscale to decrease, and n and m are constants.

4. The display module testing system according to claim 1, characterized in that: The mathematical model of the display power consumption comprehensive coefficient is as follows: ； in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, where p, q, and r are constants.

5. The display module testing system according to claim 1, characterized in that: The mathematical model of the display optical performance coefficient is specifically as follows: =0.2 ； in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, and t and v are constants.

6. The display module testing system according to claim 1, characterized in that: The mathematical model of the touch function comprehensive coefficient is as follows: = + ； in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, where x and z are constants.

7. The display module testing system according to claim 1, characterized in that: The mathematical model of the function switching comprehensive coefficient is as follows: ； in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, and b and d are constants.

8. The display module testing system according to claim 1, characterized in that: The mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching.

9. A method for testing a display module, characterized in that: include: S1 test signal generation step: Based on high-performance programmable logic devices, it can generate various test signals, including video signals with different resolutions, frame rates, and grayscales, as well as control signals for triggering various functional operations of the display module; S2 image information acquisition and testing step: including image data acquisition step, power data acquisition step and touch data acquisition step, which is used to acquire different types of data of the display module during the test process to obtain the first characteristic text of the display module; The first characteristic text of the display module specifically refers to: average grayscale response time parameter, dynamic picture response time parameter, grayscale rise time parameter, grayscale rise average time parameter, grayscale fall time parameter, grayscale fall average time parameter, black screen power consumption parameter, average power consumption parameter of different pure color static pictures, power consumption parameter of different frame rate video playback, average power consumption parameter of different frame rate video playback, power consumption parameter of different resolution video playback, average power consumption parameter of different resolution video playback, power consumption parameter under different brightness settings, theoretical power consumption parameter under different brightness settings, full white and full black contrast parameter, brightness uniformity standard deviation parameter, average brightness parameter, color deviation parameter under different viewing angles, average color deviation parameter under different viewing angles, brightness parameter under different viewing angles, average brightness parameter under different viewing angles, touch response time parameter, bad pixel number parameter, touch pressure sensitivity accuracy parameter, touch pressure sensitivity average accuracy parameter, touch pressure sensitivity stability parameter, touch pressure sensitivity average stability parameter, refresh rate switching speed parameter, refresh rate switching time jitter parameter, refresh rate switching average time jitter parameter, resolution switching speed parameter, resolution switching time jitter parameter, resolution switching average time jitter parameter; S3 data processing and analysis step: used to fill missing values, delete outliers and normalize the first characteristic text data of the display module to obtain the second characteristic text of the display module, and import the second characteristic text data of the display module into the mathematical model of the display response time comprehensive coefficient, the mathematical model of the display power consumption comprehensive coefficient, the mathematical model of the display optical performance coefficient, the mathematical model of the touch function comprehensive coefficient, the mathematical model of the function switching comprehensive coefficient and the mathematical model of the display module comprehensive performance coefficient, and process and analyze them to obtain a text output value based on the second characteristic text of the display module; The mathematical model of the display response time comprehensive coefficient is as follows: = + ； in Refers to the comprehensive coefficient of display response time, Refers to the average grayscale response time, Refers to the dynamic picture response time, Refers to the grayscale rise time, Refers to the average grayscale rise time, Refers to the grayscale fall time, Refers to the average time of grayscale decline, n and m refer to constants; The mathematical model of the display power consumption comprehensive coefficient is as follows: ； in Refers to the comprehensive coefficient of display power consumption, Refers to black screen power consumption, Refers to the average power consumption of different pure color static images. Refers to the power consumption of video playback at different frame rates. Refers to the average power consumption of video playback at different frame rates. Refers to the power consumption of video playback at different resolutions. Refers to the average power consumption of video playback at different resolutions. Refers to the power consumption at different brightness settings. Refers to the theoretical power consumption under different brightness settings, p, q, r are constants; The mathematical model of the display optical performance coefficient is specifically as follows: =0.2 ； in Refers to the display optical performance coefficient, Refers to the contrast ratio of all white and all black. Refers to the standard deviation of brightness uniformity, Refers to the average brightness, Refers to the color deviation under different viewing angles. Refers to the average color deviation at different viewing angles. Refers to the brightness at different viewing angles. Refers to the average brightness at different viewing angles, t and v refer to constants; The mathematical model of the touch function comprehensive coefficient is as follows: = + ； in Refers to the comprehensive coefficient of touch function, Refers to the touch response time, Refers to the number of bad pixels, Refers to the touch pressure sensitivity accuracy, Refers to the average accuracy of touch pressure sensitivity, Refers to the stability of touch pressure sensitivity, Refers to the average stability of touch pressure sensitivity, x and z refer to constants; The mathematical model of the function switching comprehensive coefficient is as follows: ； in Refers to the comprehensive coefficient of function switching, Refers to the refresh rate switching speed. Refers to the refresh rate switching time jitter, Refers to the average time jitter of refresh rate switching. Refers to the resolution switching speed, Refers to the resolution switching time jitter, refers to the average time jitter of resolution switching, b and d refer to constants; The mathematical model of the comprehensive performance coefficient of the display module is as follows: +0.1 +0.3 +0.2 + ,in Refers to the comprehensive performance coefficient of the display module. Refers to the comprehensive coefficient of display response time, Refers to the comprehensive coefficient of display power consumption, Refers to the display optical performance coefficient, Refers to the comprehensive coefficient of touch function, Refers to the comprehensive coefficient of function switching; S4 display module comprehensive judgment step: used to compare the display module comprehensive performance coefficient with a preset value, and judge the display module whose display module comprehensive performance coefficient is less than the preset value as unqualified; S5 result output step: used to import the judgment information and text output value of the display module into the user information terminal.

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