Rapid detection method and system based on stress resistance of display screen

Abstract

The invention discloses a rapid detection method and system based on the stress resistance of a display screen, and relates to the field of rapid detection of the stress resistance, and the method comprises the steps: analyzing the environmental correlation degree generated by the electrical stress of different types of display screens, and building an electrical stress-environmental parameter correlation degree group of each type of display screen; calculating the electrical stress resistance prediction attenuation degree of the to-be-tested display screen according to the deviation between the actual operation environment parameter and the standard operation parameter of the to-be-tested display screen; the color difference change condition of the display screen to be tested under overload operation is analyzed, and the electromagnetic coupling resistance is evaluated; circularly electrifying the to-be-tested display screen, analyzing the charge accumulation amount of the insulating layer in each electrifying period, and evaluating the charge accumulation resistance of the to-be-tested display screen; the electromagnetic coupling resistance and the charge accumulation resistance of the display screen to be tested are comprehensively analyzed, the attenuation degree is predicted in combination with the electrical stress resistance, the electrical stress resistance capacity of the display screen is evaluated, and an early warning signal is sent out when the evaluation result is unqualified.

Description

Technical Field

[0001] The present invention relates to the field of rapid detection of stress resistance, and in particular to a rapid detection method and system based on the stress resistance of a display screen. Background Art

[0002] Electrical overstress is a common cause of damage to components. It manifests itself in the form of overvoltage or overcurrent generating a large amount of heat energy, causing the internal temperature of the component to be too high, thereby damaging the component. It is a common way of damaging electronic devices caused by pulses in the electrical system.

[0003] Compared with mechanical stress, electrical stress is easier to generate. Since electrical stress occurs inside the equipment, it is difficult to detect it in time. If products with unqualified electrical stress resistance are not found in time during production and testing, it will cause significant property losses. Conventional display electrical stress resistance testing methods are complicated and time-consuming, and cannot be applied in mass production testing scenarios. Therefore, how to implement a simple and fast detection method for display stress resistance through calculation is an urgent problem to be solved. Summary of the invention

[0004] In order to solve the above technical problems, a rapid detection method based on the stress resistance of a display screen is provided. This technical solution solves the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A rapid detection method based on the stress resistance of a display screen comprises:

[0007] Analyze the environmental correlation of electrical stress generated by different types of display screens, and establish an array of electrical stress-environmental parameter correlations for each type of display screen;

[0008] Calculate the predicted attenuation of the electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters;

[0009] Analyze the color difference change of the display screen under overload operation and evaluate its electromagnetic coupling resistance;

[0010] Cycle power on the display screen to be tested, analyze the charge accumulation of the insulation layer in each power-on cycle, and evaluate its charge accumulation resistance;

[0011] Comprehensively analyze the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combine the electrical stress resistance to predict the attenuation degree, evaluate the electrical stress resistance of the display screen, and issue a warning signal when the evaluation result is unqualified.

[0012] Preferably, the analyzing the environmental correlation of electrical stress generated by different types of display screens and establishing an electrical stress-environmental parameter correlation array for each type of display screen specifically includes:

[0013] Obtain all the detectable display screen types with specified specifications, and select the same number of devices as the set operating environment parameters for each display screen type as experimental devices;

[0014] According to the production specifications, obtain the standard operating environment parameters corresponding to each type of display device;

[0015] Set the time interval T0, operate the experimental equipment at rated power, and after the equipment runs smoothly, continuously monitor the operating power of the equipment's electrical components to obtain the average operating power and power fluctuation of each electrical component during the T0 period;

[0016] Place the experimental equipment in the standard operating environment parameters corresponding to the display screen type to which it belongs, perform single change control on the environmental parameters of each experimental equipment under the same unit scale, continuously monitor the operating power of the electrical components of the equipment during the T0 time, and record the average operating power and power fluctuation of each electrical component of each experimental equipment when the environmental parameters change;

[0017] Calculate the weighted sum of the power changes and power fluctuations of all electrical components of the experimental equipment under standard operating environment parameters and under changed operating environment parameters as the correlation coefficient between the electrical stress and environmental parameters of the experimental equipment, and establish the electrical stress and environmental parameter correlation coefficient array A corresponding to each display type k , A k =[a k1 …a k j …a km ], a kj is the correlation coefficient between the electrical stress of the kth display type and the jth environmental parameter.

[0018] Preferably, the step of calculating the predicted attenuation degree of electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters specifically includes:

[0019] Obtain the display screen type of the display screen to be tested, and obtain the array of correlation between electrical stress and environmental parameters according to the display screen type;

[0020] The actual operating environment parameters of the display screen to be tested are obtained, the environmental parameter deviation between the actual environmental parameters and the standard environmental parameters is calculated, and the product of the environmental parameter deviation ratio and the electrical stress environment correlation is aggregated and averaged to obtain the expected attenuation of the electrical stress resistance of the display screen to be monitored.

[0021] Preferably, analyzing the color difference change of the display screen to be tested under overload operation and evaluating its electromagnetic coupling resistance specifically includes:

[0022] Place the display screen to be tested in a test environment without external electromagnetic interference, set the time interval T1, and make the display screen to be tested operate at an overload power of the rated power setting multiple within the T1 time;

[0023] Set monitoring points with equal time intervals within T1 time, monitor the brightness and hue components of the display screen to be tested, analyze the color difference changes between every two monitoring points, and calculate the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power. The electromagnetic coupling resistance evaluation value calculation formula is:

[0024]

[0025] Where ΔE i is the color difference between the i-th to i+1-th monitoring points, ΔL i , Δa i , Δb i They are the brightness change between the i-th to i+1-th monitoring points, the hue component change from green to red, and the hue component change from blue to yellow. n is the set number of monitoring points, P is the set multiplier of the rated power, and Res is the electromagnetic coupling resistance evaluation value.

[0026] Preferably, the step of cyclically powering on the display screen to be tested, analyzing the charge accumulation amount of the insulating layer in each power-on cycle, and evaluating its charge accumulation resistance specifically includes:

[0027] Set the power-on cycle and operate the experimental equipment at rated power;

[0028] Set a fixed interval d, divide the insulating layer into rectangular detection areas with a length and width of d, detect the charge amount in each detection area in each power-on cycle, and calculate the charge accumulation resistance evaluation value of the display screen to be tested by analyzing the charge accumulation after the insulating layer is powered on. The charge accumulation resistance evaluation value calculation formula is:

[0029]

[0030] Where QS is the charge accumulation resistance evaluation value, ΔQ jk is the charge of the jth monitoring area in the kth power-on cycle, is the average value of the charge in all monitoring areas during the kth power-on cycle, m is the number of divided detection areas, l is the number of power-on cycles, and v ks is the charge accumulation starting rate of the kth power-on cycle, v ke is the final rate of charge accumulation in the kth power-on cycle.

[0031] Preferably, the comprehensive analysis of the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combined with the predicted attenuation of electrical stress resistance, evaluates the electrical stress resistance capability of the display screen, and issuing a warning signal when the evaluation result is unqualified specifically includes:

[0032] The expected attenuation of the electrical stress resistance of the display screen to be tested is obtained, and the electrical stress resistance capability evaluation value is calculated according to the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested. The electrical stress resistance capability evaluation value calculation formula is:

[0033]

[0034] Where R is the electrical stress resistance assessment value, Res and QS are the electromagnetic coupling resistance assessment value and charge accumulation resistance assessment value, α and β are the weight coefficients of Res and QS, respectively, and Pre is the expected attenuation degree;

[0035] An electrical stress resistance capability evaluation value threshold is set. When the electrical stress resistance capability evaluation value is less than or equal to the electrical stress resistance capability evaluation value threshold, an electrical stress resistance capability unqualified warning signal is sent, otherwise an electrical stress resistance capability qualified signal is sent.

[0036] Furthermore, a rapid detection system based on the stress resistance of a display screen is proposed, which is used to implement the rapid detection method based on the stress resistance of a display screen as described above, including:

[0037] An electrical stress resistance prediction attenuation calculation module, which calculates the electrical stress resistance environmental relevance of the display screen according to the power change and power fluctuation of all electrical components when different environmental parameters of the display screen change, and calculates the expected attenuation of the electrical stress resistance by analyzing the deviation between the operating environmental parameters of the display screen and the standard environmental parameters and combining the electrical stress resistance environmental relevance;

[0038] An electromagnetic coupling resistance evaluation module, which monitors the brightness and hue components of the display screen within a set time, analyzes the color difference changes between every two monitoring points, and comprehensively calculates the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power;

[0039] A charge accumulation resistance evaluation module, wherein the test equipment is operated at rated power in each power-on cycle, the charge amount in each detection area is detected, and the charge accumulation condition of the insulating layer after power is applied is analyzed to calculate the charge accumulation resistance evaluation value of the display screen to be tested;

[0040] The electrical stress resistance capability assessment and early warning module evaluates the initial electrical stress resistance capability of the display screen before leaving the factory based on a comprehensive analysis of the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combined with the predicted attenuation of electrical stress resistance, and issues an early warning signal when the assessment fails.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] Analyze the environmental relevance of electrical stress generated by different types of display screens, calculate the predicted attenuation of electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters, and use the predicted attenuation to adjust the deviation caused by environmental factors when evaluating electrical stress resistance. By analyzing the color difference change of the display screen to be tested under overload operation, evaluate the electromagnetic coupling resistance, and cyclically power on the display screen to be tested, analyze the charge accumulation of the insulation layer, and evaluate its charge accumulation resistance. Discontinuous power supply can ensure that the charge of the insulation layer automatically dissipates when it is not powered on, preventing damage caused by excessive charge accumulation. Among them, color difference change and charge accumulation can be quickly detected according to the set power-on time. By considering multiple factors such as electromagnetic coupling resistance and charge accumulation resistance, combined with the correction of electrical stress resistance attenuation caused by environmental factors, fast and accurate detection of the display screen is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flow chart of a rapid detection method based on the stress resistance of a display screen according to the present invention;

[0044] Figure 2 For the present invention, the environmental correlation of the electrical stress generated by different types of display screens is analyzed, and an array flow chart of the electrical stress-environmental parameter correlation of each type of display screen is established;

[0045] Figure 3 A flow chart of calculating the predicted attenuation degree of electrical stress resistance of a display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters of the display screen to be tested;

[0046] Figure 4 A flow chart of analyzing the color difference change of a display screen under overload operation and evaluating its electromagnetic coupling resistance according to the present invention;

[0047] Figure 5 A flow chart of the present invention for cyclically powering the display screen to be tested, analyzing the charge accumulation amount of the insulating layer in each power-on cycle, and evaluating its charge accumulation resistance;

[0048] Figure 6The present invention comprehensively analyzes the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combines the predicted attenuation degree of electrical stress resistance, evaluates the electrical stress resistance capability of the display screen, and issues a warning signal flow chart when the evaluation result is unqualified;

[0049] Figure 7 The present invention is a schematic diagram of the structure of a rapid detection system based on the stress resistance of a display screen. DETAILED DESCRIPTION

[0050] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0051] Reference Figure 1 As shown, a rapid detection method based on the stress resistance of a display screen comprises:

[0052] Analyze the environmental correlation of electrical stress generated by different types of display screens, and establish an array of electrical stress-environmental parameter correlations for each type of display screen;

[0053] Calculate the predicted attenuation of the electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters;

[0054] Analyze the color difference change of the display screen under overload operation and evaluate its electromagnetic coupling resistance;

[0055] Cycle power on the display screen to be tested, analyze the charge accumulation of the insulation layer in each power-on cycle, and evaluate its charge accumulation resistance;

[0056] Comprehensively analyze the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combine the electrical stress resistance to predict the attenuation degree, evaluate the electrical stress resistance of the display screen, and issue a warning signal when the evaluation result is unqualified.

[0057] Reference Figure 1 As shown, the environmental correlation of the electrical stress generated by different types of display screens is analyzed, and an array of electrical stress-environmental parameter correlations of each type of display screen is established, specifically including:

[0058] Obtain all the detectable display screen types with specified specifications, and select the same number of devices as the set operating environment parameters for each display screen type as experimental devices;

[0059] According to the production specifications, obtain the standard operating environment parameters corresponding to each type of display device;

[0060] Set the time interval T0, operate the experimental equipment at rated power, and after the equipment runs smoothly, continuously monitor the operating power of the equipment's electrical components to obtain the average operating power and power fluctuation of each electrical component during the T0 period;

[0061] Place the experimental equipment in the standard operating environment parameters corresponding to the display screen type to which it belongs, perform single change control on the environmental parameters of each experimental equipment under the same unit scale, continuously monitor the operating power of the electrical components of the equipment during the T0 time, and record the average operating power and power fluctuation of each electrical component of each experimental equipment when the environmental parameters change;

[0062] Calculate the weighted sum of the power changes and power fluctuations of all electrical components of the experimental equipment under standard operating environment parameters and under changed operating environment parameters as the correlation coefficient between the electrical stress and environmental parameters of the experimental equipment, and establish the electrical stress and environmental parameter correlation coefficient array A corresponding to each display type k , A k =[a k1 …a k j …a km ], a kj is the correlation coefficient between the electrical stress of the kth display type and the jth environmental parameter.

[0063] The calculation formula of the correlation coefficient between electrical stress and environmental parameters is:

[0064]

[0065] Where a is the correlation coefficient, p is the average power under standard environmental parameters, and p inc is the average power under actual environmental parameters, σ 2 is the power variation variance under standard environmental parameters, σ inc 2 is the power variation variance under the actual environmental parameters. δ and ω are the weight coefficients of the average power and the power variation variance, respectively. For the convenience of calculation, the value of a can be kept between 0 and 1 by adjusting the values ​​of δ and ω.

[0066] In order to increase the efficiency and accuracy of display screen detection, the performance of different types of display screens needs to be analyzed. Different types of display screens have different electrical stress resistance in different operating environments. For example, in harsh environments, LED display screens have relatively higher stress resistance. The environmental correlation coefficient is calculated to evaluate the stress resistance sensitivity of different types of displays operating in different environments, and then determine the electrical stress attenuation caused by environmental factors of this type of display screen according to the level of environmental sensitivity.

[0067] Reference Figure 3 As shown, according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters, the predicted attenuation degree of the electrical stress resistance of the display screen to be tested is calculated, specifically including:

[0068] Obtain the display screen type of the display screen to be tested, and obtain the array of correlation between electrical stress and environmental parameters according to the display screen type;

[0069] The actual operating environment parameters of the display screen to be tested are obtained, the environmental parameter deviation between the actual environmental parameters and the standard environmental parameters is calculated, and the product of the environmental parameter deviation ratio and the electrical stress environment correlation is aggregated and averaged to obtain the expected attenuation of the electrical stress resistance of the display screen to be monitored.

[0070] The expected attenuation calculation formula is:

[0071]

[0072] In the formula, a i is the correlation coefficient with the i-th environmental parameter, ΔEV i is the deviation ratio of the i-th environmental parameter, m is the total number of environmental parameters, Pre is the expected attenuation, and the expected attenuation calculation results of different types of display screens can be scaled proportionally to increase the differentiation of calculation results when evaluating electrical stress resistance;

[0073] By calculating the electrical stress resistance attenuation of the display screen under the current operating environment, the environmental deviation in the electrical stress resistance calculation can be corrected to make the test result more accurate.

[0074] Reference Figure 4 As shown in the figure, the color difference change of the display screen under overload operation is analyzed, and its electromagnetic coupling resistance is evaluated, including:

[0075] Place the display screen to be tested in a test environment without external electromagnetic interference, set the time interval T1, and make the display screen to be tested operate at an overload power of the rated power setting multiple within the T1 time;

[0076] Set monitoring points with equal time intervals within T1 time, monitor the brightness and hue components of the display screen to be tested, analyze the color difference changes between every two monitoring points, and calculate the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power. The electromagnetic coupling resistance evaluation value calculation formula is:

[0077]

[0078] Where ΔE i is the color difference between the i-th to i+1-th monitoring points, ΔL i , Δa i , Δbi They are the brightness change between the i-th to i+1-th monitoring points, the hue component change from green to red, and the hue component change from blue to yellow. n is the set number of monitoring points, P is the set multiplier of the rated power, and Res is the electromagnetic coupling resistance evaluation value.

[0079] When a display screen is overloaded, an electromagnetic field will be generated between its internal circuits, components and system modules. The electromagnetic fields will be superimposed on each other and coupled to the display signals or control circuits, which may cause signal distortion, picture interference, fluctuations and other degraded imaging quality.

[0080] Therefore, detecting the color difference changes of the display screen is an intuitive and simple method that will not cause obvious damage to the display screen. The higher the overload operating power ratio is set, the faster the color difference deviation changes, the higher the detection efficiency is, and the operating life and safety of the display screen will be reduced. Conversely, the detection efficiency will be reduced, but the detection safety will be higher. The specific setting needs to be dynamically set according to actual production needs and display specification standards.

[0081] Reference Figure 5 As shown, the display screen to be tested is cyclically powered on, and the charge accumulation amount of the insulating layer in each power-on cycle is analyzed to evaluate its charge accumulation resistance, including:

[0082] Set the power-on cycle and operate the experimental equipment at rated power;

[0083] Set a fixed interval d, divide the insulating layer into rectangular detection areas with a length and width of d, detect the charge amount in each detection area in each power-on cycle, and calculate the charge accumulation resistance evaluation value of the display screen to be tested by analyzing the charge accumulation after the insulating layer is powered on. The charge accumulation resistance evaluation value calculation formula is:

[0084]

[0085] Where QS is the charge accumulation resistance evaluation value, ΔQ jk is the charge of the jth monitoring area in the kth power-on cycle, is the average value of the charge in all monitoring areas during the kth power-on cycle, m is the number of divided detection areas, l is the number of power-on cycles, and v ks is the charge accumulation starting rate of the kth power-on cycle, v ke is the final rate of charge accumulation in the kth power-on cycle.

[0086] Electrical stress leading to charge accumulation in the insulation layer is a common problem, especially in high-voltage electrical equipment and electronic devices. Charge accumulation may cause the performance of the insulation layer to degrade, resulting in problems such as electrostatic discharge, increasing the risk of damage to electronic components or equipment failure.

[0087] Insulating materials have different electrical conductivity and capacitance characteristics according to their material properties. Impurities and defects in the materials may cause uneven charge distribution and local accumulation. In addition, the charge distribution will also be affected by the intensity and stability of the electric field distribution. Therefore, the charge accumulation resistance of the display screen is one of the important factors in evaluating its electrical stress resistance.

[0088] Among them, the degree of charge fluctuation in the monitored area is evaluated by calculating the sum of the charge variance of each power-on cycle. The greater the fluctuation, the more obvious the charge accumulation and the worse the charge accumulation resistance. At the same time, the acceleration of charge accumulation is calculated. The greater the acceleration, the worse the charge accumulation resistance.

[0089] The display is energized periodically to prevent the insulating layer from irreversible damage due to excessive charge accumulation. The length of the power-on cycle is set. The longer the cycle, the more obvious the charge accumulation, and the higher the detection accuracy. Conversely, the detection accuracy will decrease, but the detection speed and safety will increase. When setting the cycle length, it is necessary to comprehensively consider the production inspection requirements and the type of display.

[0090] Reference Figure 6 As shown, the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested are comprehensively analyzed, and the attenuation degree of electrical stress resistance is predicted to evaluate the electrical stress resistance of the display screen. When the evaluation result is unqualified, a warning signal is issued, including:

[0091] The expected attenuation of the electrical stress resistance of the display screen to be tested is obtained, and the electrical stress resistance capability evaluation value is calculated according to the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested. The electrical stress resistance capability evaluation value calculation formula is:

[0092]

[0093] Where R is the electrical stress resistance assessment value, Res and QS are the electromagnetic coupling resistance assessment value and charge accumulation resistance assessment value, α and β are the weight coefficients of Res and QS, respectively, and Pre is the expected attenuation degree;

[0094] An electrical stress resistance capability evaluation value threshold is set. When the electrical stress resistance capability evaluation value is less than or equal to the electrical stress resistance capability evaluation value threshold, an electrical stress resistance capability unqualified warning signal is sent, otherwise an electrical stress resistance capability qualified signal is sent.

[0095] The electrical stress resistance evaluation value threshold is set by professionals in this field based on the gas stress resistance evaluation value and the actual detection discrimination requirements, combined with the calculated magnitude range of the expected attenuation degree, and will not be repeated here.

[0096] By providing timely warnings for display screens that fail the electrical stress resistance assessment, property losses caused by production quality issues can be prevented.

[0097] For further information, see Figure 7 As shown, based on the same inventive concept as the above-mentioned rapid detection method based on the stress resistance of a display screen, the present solution also proposes a rapid detection system based on the stress resistance of a display screen, comprising:

[0098] An electrical stress resistance prediction attenuation calculation module, which calculates the electrical stress resistance environmental relevance of the display screen according to the power change and power fluctuation of all electrical components when different environmental parameters of the display screen change, and calculates the expected attenuation of the electrical stress resistance by analyzing the deviation between the operating environmental parameters of the display screen and the standard environmental parameters and combining the electrical stress resistance environmental relevance;

[0099] An electromagnetic coupling resistance evaluation module, which monitors the brightness and hue components of the display screen within a set time, analyzes the color difference changes between every two monitoring points, and comprehensively calculates the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power;

[0100] A charge accumulation resistance evaluation module, wherein the test equipment is operated at rated power in each power-on cycle, the charge amount in each detection area is detected, and the charge accumulation condition of the insulating layer after power is applied is analyzed to calculate the charge accumulation resistance evaluation value of the display screen to be tested;

[0101] The electrical stress resistance capability assessment and early warning module evaluates the initial electrical stress resistance capability of the display screen before leaving the factory based on a comprehensive analysis of the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combined with the predicted attenuation of electrical stress resistance, and issues an early warning signal when the assessment fails.

[0102] Furthermore, the present solution also proposes a storage medium of a method and system for rapid detection of the stress resistance of a display screen, on which a computer-readable program is stored. When the computer-readable program is called, the method and system for rapid detection of the stress resistance of a display screen are executed.

[0103] It is understandable that the storage medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; an optical medium, such as a DVD; or a semiconductor medium, such as a solid state drive (SSD).

[0104] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A rapid detection method based on the stress resistance of a display screen, characterized in that: include: Analyze the environmental correlation of electrical stress generated by different types of display screens, and establish an array of electrical stress-environmental parameter correlations for each type of display screen; Calculate the predicted attenuation of the electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters; Analyze the color difference change of the display screen under overload operation and evaluate its electromagnetic coupling resistance; Cycle power on the display screen to be tested, analyze the charge accumulation of the insulation layer in each power-on cycle, and evaluate its charge accumulation resistance; Comprehensively analyze the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combine the electrical stress resistance to predict the attenuation degree, evaluate the electrical stress resistance of the display screen, and issue a warning signal when the evaluation result is unqualified.

2. A rapid detection method based on the stress resistance of a display screen according to claim 1, characterized in that: The analyzing the environmental correlation of the electrical stress generated by different types of display screens and establishing the electrical stress-environmental parameter correlation array of each type of display screen specifically includes: Obtain all the detectable display screen types with specified specifications, and select the same number of devices as the set operating environment parameters for each display screen type as experimental devices; According to the production specifications, obtain the standard operating environment parameters corresponding to each type of display device; Set the time interval T0, operate the experimental equipment at rated power, and after the equipment runs smoothly, continuously monitor the operating power of the equipment's electrical components to obtain the average operating power and power fluctuation of each electrical component during the T0 period; Place the experimental equipment in the standard operating environment parameters corresponding to the display screen type to which it belongs, perform single change control on the environmental parameters of each experimental equipment under the same unit scale, continuously monitor the operating power of the electrical components of the equipment during the T0 time, and record the average operating power and power fluctuation of each electrical component of each experimental equipment when the environmental parameters change; Calculate the weighted sum of the power changes and power fluctuations of all electrical components of the experimental equipment under standard operating environment parameters and under changed operating environment parameters as the correlation coefficient between the electrical stress and environmental parameters of the experimental equipment, and establish the electrical stress and environmental parameter correlation coefficient array A corresponding to each display type k , A k =[a k1 …a k j …a km ], a kj is the correlation coefficient between the electrical stress of the kth display type and the jth environmental parameter.

3. A rapid detection method based on the stress resistance of a display screen according to claim 2, characterized in that: The step of calculating the predicted attenuation degree of electrical stress resistance of the display screen to be tested according to the deviation between the actual operating environment parameters of the display screen to be tested and the standard operating parameters specifically includes: Obtain the display screen type of the display screen to be tested, and obtain the array of correlation between electrical stress and environmental parameters according to the display screen type; The actual operating environment parameters of the display screen to be tested are obtained, the environmental parameter deviation between the actual environmental parameters and the standard environmental parameters is calculated, and the product of the environmental parameter deviation ratio and the electrical stress environment correlation is aggregated and averaged to obtain the expected attenuation of the electrical stress resistance of the display screen to be monitored.

4. A rapid detection method based on the stress resistance of a display screen according to claim 3, characterized in that: The analyzing the color difference change of the display screen under overload operation and evaluating its electromagnetic coupling resistance specifically includes: Place the display screen to be tested in a test environment without external electromagnetic interference, set the time interval T1, and make the display screen to be tested operate at an overload power of the rated power setting multiple within the T1 time; Set monitoring points with equal time intervals within T1 time, monitor the brightness and hue components of the display screen to be tested, analyze the color difference changes between every two monitoring points, and calculate the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power. The electromagnetic coupling resistance evaluation value calculation formula is: Where ΔE i is the color difference between the i-th to i+1-th monitoring points, ΔL i , Δa i , Δb i They are the brightness change between the i-th to i+1-th monitoring points, the hue component change from green to red, and the hue component change from blue to yellow. n is the set number of monitoring points, P is the set multiplier of the rated power, and Res is the electromagnetic coupling resistance evaluation value.

5. A rapid detection method based on the stress resistance of a display screen according to claim 4, characterized in that: The step of cyclically powering the display screen to be tested, analyzing the charge accumulation amount of the insulating layer in each power-on cycle, and evaluating the charge accumulation resistance thereof specifically includes: Set the power-on cycle and operate the experimental equipment at rated power; Set a fixed interval d, divide the insulating layer into rectangular detection areas with a length and width of d, detect the charge amount in each detection area in each power-on cycle, and calculate the charge accumulation resistance evaluation value of the display screen to be tested by analyzing the charge accumulation after the insulating layer is powered on. The charge accumulation resistance evaluation value calculation formula is: Where QS is the charge accumulation resistance evaluation value, ΔQ jk is the charge of the jth monitoring area in the kth power-on cycle, is the average value of the charge in all monitoring areas during the kth power-on cycle, m is the number of divided detection areas, l is the number of power-on cycles, and v ks is the charge accumulation starting rate of the kth power-on cycle, v ke is the final rate of charge accumulation in the kth power-on cycle.

6. A rapid detection method based on the stress resistance of a display screen according to claim 5, characterized in that: The comprehensive analysis of the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combined with the predicted attenuation of electrical stress resistance, evaluates the electrical stress resistance capability of the display screen, and issues a warning signal when the evaluation result is unqualified specifically includes: The expected attenuation of the electrical stress resistance of the display screen to be tested is obtained, and the electrical stress resistance capability evaluation value is calculated according to the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested. The electrical stress resistance capability evaluation value calculation formula is: Where R is the electrical stress resistance assessment value, Res and QS are the electromagnetic coupling resistance assessment value and charge accumulation resistance assessment value, α and β are the weight coefficients of Res and QS, respectively, and Pre is the expected attenuation degree; An electrical stress resistance capability evaluation value threshold is set. When the electrical stress resistance capability evaluation value is less than or equal to the electrical stress resistance capability evaluation value threshold, an electrical stress resistance capability unqualified warning signal is sent, otherwise an electrical stress resistance capability qualified signal is sent.

7. A rapid detection system based on the stress resistance of a display screen, used to implement a rapid detection method based on the stress resistance of a display screen as described in any one of claims 1 to 6, characterized in that: include: An electrical stress resistance prediction attenuation calculation module, which calculates the electrical stress resistance environmental relevance of the display screen according to the power change and power fluctuation of all electrical components when different environmental parameters of the display screen change, and calculates the expected attenuation of the electrical stress resistance by analyzing the deviation between the operating environmental parameters of the display screen and the standard environmental parameters and combining the electrical stress resistance environmental relevance; An electromagnetic coupling resistance evaluation module, which monitors the brightness and hue components of the display screen within a set time, analyzes the color difference changes between every two monitoring points, and comprehensively calculates the electromagnetic coupling resistance evaluation value of the display screen to be tested based on the color difference changes and the set operating power; A charge accumulation resistance evaluation module, wherein the test equipment is operated at rated power in each power-on cycle, the charge amount in each detection area is detected, and the charge accumulation condition of the insulating layer after power is applied is analyzed to calculate the charge accumulation resistance evaluation value of the display screen to be tested; The electrical stress resistance capability assessment and early warning module evaluates the initial electrical stress resistance capability of the display screen before leaving the factory based on a comprehensive analysis of the electromagnetic coupling resistance and charge accumulation resistance of the display screen to be tested, combined with the predicted attenuation of electrical stress resistance, and issues an early warning signal when the assessment fails.

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