Display screen reliability aging test system and method

Abstract

The invention provides a display screen reliability aging test system and method. Belongs to the technical field of electronic component reliability testing. The method comprises the steps of performing multi-point uniform-temperature layout planning on a display screen aging test area, and generating a distributed heating unit deployment scheme and annular circulating air duct design data; according to the distributed heating unit deployment scheme and the annular circulating air duct design data, a display screen aging test environment is constructed; a temperature control structure of distributed heating units, an annular uniform temperature air duct and PID precise temperature control is adopted, the temperature uniformity of an LCD test area is smaller than or equal to + / -0.5 DEG C. The structure comprises six groups of distributed heating units, an annular circulating air duct and five attached temperature monitoring points, the heating power is dynamically adjusted through a PID controller, and the technical defect that a traditional platform is uneven in temperature distribution is overcome.

Description

Technical Field

[0001] This invention proposes a display screen reliability aging test system and method, belonging to the field of electronic component reliability testing technology. Background Technology

[0002] Currently, the field of LCD display reliability aging testing still heavily relies on traditional aging cabinets and simple stand-type test platforms. These devices have significant limitations in design, mainly in five aspects: temperature control, operational stability, equipment compatibility, comprehensive data monitoring, and safety protection mechanisms.

[0003] In terms of temperature control, traditional platforms often use single-point heating or simple air ducts, which leads to temperature deviations of more than ±2℃ in different areas of the LCD screen, resulting in uneven aging and seriously affecting the accuracy of test results.

[0004] In terms of operational stability, under long-term high-load operation, the power supply system voltage fluctuates greatly, the mechanical structure is prone to wear and deformation, and the failure downtime rate is as high as 15% or more.

[0005] In terms of equipment compatibility, the fixture structure is fixed, and it needs to be designed separately to adapt to different sizes of LCDs, which is costly and inefficient to replace.

[0006] In terms of data monitoring, it can only capture basic parameters such as temperature and power-on time, and does not track key aging indicators such as brightness decay and pixel response speed in real time.

[0007] In terms of safety protection mechanisms, it only has single overheat protection and lacks overcurrent, overpressure and sample abnormality warnings, which may easily damage the sample or cause safety hazards.

[0008] The aforementioned defects severely restrict the accuracy, stability, and comprehensiveness of LCD display reliability testing, failing to meet the demands of modern display technology for high-quality and high-efficiency testing. Summary of the Invention

[0009] This invention provides a display screen reliability aging test system and method to solve the problems mentioned in the background art above:

[0010] The present invention proposes a display screen reliability aging test method, the method comprising:

[0011] S1. Plan the multi-point uniform temperature layout of the display screen aging test area, and generate a distributed heating unit deployment scheme and annular circulation air duct design data; construct the display screen aging test environment based on the distributed heating unit deployment scheme and annular circulation air duct design data.

[0012] S2. Based on the constructed display screen aging test environment, optimize the platform structure and power supply system, and generate optimized platform operating parameters;

[0013] S3. Based on the optimized platform, design a modular adaptive clamping system. By combining a screw-adjustable pressure block with replaceable buffer pads, generate clamping adjustment data that adapts to LCDs of different sizes and installation specifications.

[0014] S4. Based on the modular adaptive fixture system, a multi-dimensional monitoring module is integrated to synchronously collect key parameters and generate multi-dimensional monitoring data; the multi-dimensional monitoring data is processed at high frequency and a visual aging trend report is generated through the host computer.

[0015] S5. Based on multi-dimensional monitoring data, multiple security protection mechanisms are added to generate security protection response data.

[0016] The present invention proposes a system for implementing the display screen reliability aging test method as described above, the system comprising:

[0017] Environment construction module: Plans a multi-point temperature uniformity layout for the display screen aging test area, generates a distributed heating unit deployment scheme and annular circulation air duct design data; constructs the display screen aging test environment based on the distributed heating unit deployment scheme and annular circulation air duct design data;

[0018] System optimization module: Based on the constructed display screen aging test environment, optimize the platform structure and power supply system, and generate optimized platform operating parameters;

[0019] Fixture adjustment module: Based on the optimized platform, a modular adaptive fixture system is designed. By combining a screw-adjustable pressure block with replaceable buffer pads, fixture adjustment data is generated to adapt to LCDs of different sizes and installation specifications.

[0020] Report generation module: Based on a modular adaptive fixture system, it integrates a multi-dimensional monitoring module to synchronously collect key parameters and generate multi-dimensional monitoring data; it performs high-frequency acquisition and processing on the multi-dimensional monitoring data and generates a visualized aging trend report through a host computer;

[0021] Mechanism addition module: Based on multi-dimensional monitoring data, multiple security protection mechanisms are added to generate security protection response data.

[0022] The beneficial effects of this invention are as follows: A temperature control structure employing distributed heating units, a ring-shaped uniform temperature air duct, and PID precise temperature control achieves a temperature uniformity of ≤±0.5℃ in the LCD testing area. This structure includes six distributed heating units, a ring-shaped circulating air duct, and five closely fitted temperature monitoring points. The heating power is dynamically adjusted via a PID controller, overcoming the technical shortcomings of uneven temperature distribution in traditional platforms. The improved modular adaptive fixture system, through a combination of a lead screw-driven sliding block and replaceable buffer pads, adapts to LCDs of different sizes and installation methods from 3.5 inches to 65 inches, allowing for sample fixation without fixture replacement, unlike existing fixed-size fixture solutions. The improved power supply system, combining dual-redundant power supply and voltage regulation filtering, includes a parallel design of main / backup power supply modules, a switching control chip, and a voltage regulation circuit, achieving a temperature uniformity of ≤±0.1℃ in case of failure. Seamless switching with output voltage fluctuation ≤ ±0.05V improves the long-term power supply reliability of the platform; the improved monitoring system integrating multi-dimensional parameters such as temperature, voltage, brightness, and pixel performance connects each detection unit and data processing terminal via RS485 bus, and generates visual reports with the help of host computer software, solving the problems of partial data acquisition and incomplete evaluation in existing technologies; the improved multi-safety protection mechanism, including overheat protection, overcurrent protection, and abnormal warning, achieves a rapid response of ≤0.3 seconds through the linkage control of temperature relays, current detection modules, and the main control unit, avoiding safety hazards during the testing process; the improved three-level control system of PLC + touch screen + host computer supports local operation and remote monitoring, realizing full automation of aging parameter setting, real-time data viewing, and report export, improving the convenience and intelligence of testing operations. Attached Figure Description

[0023] Figure 1 This is a diagram illustrating the steps of the method described in this invention;

[0024] Figure 2 This is a system module diagram of the present invention. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] One embodiment of the present invention, such as Figure 1 As shown, the display screen reliability aging test method includes:

[0027] S1. Perform multi-point temperature uniformity layout planning for the display screen aging test area, and generate a distributed heating unit deployment scheme and annular circulation air duct design data; based on the distributed heating unit deployment scheme and annular circulation air duct design data, construct the display screen aging test environment, which has temperature uniformity control, and controls the temperature deviation of the LCD test area within ±0.5℃, overcoming the pain point of insufficient temperature uniformity of traditional platforms.

[0028] S2. Based on the constructed display screen aging test environment, the platform structure and power supply system are optimized. An integrated aluminum alloy frame and a dual-redundant power supply design are adopted, along with a voltage stabilizing and filtering circuit, to generate optimized platform operating parameters. According to the optimized platform operating parameters, the continuous fault-free operation time is increased to more than 1,000 hours, significantly reducing the failure downtime rate and enhancing long-term operational reliability.

[0029] S3. Based on the optimized platform, a modular adaptive fixture system is designed. By combining a screw-adjustable pressure block with replaceable buffer pads, fixture adjustment data is generated to adapt to LCDs of different sizes and mounting specifications. Based on the fixture adjustment data, samples of LCDs of different sizes and multiple mounting specifications can be fixed without changing the fixtures, improving the adaptation efficiency by 60% and reducing the testing cost.

[0030] S4. Based on the modular adaptive fixture system, a multi-dimensional monitoring module is integrated to synchronously collect key parameters, including temperature, operating voltage, brightness decay, pixel response time, and number of dead pixels, generating multi-dimensional monitoring data; the multi-dimensional monitoring data is processed by high-frequency acquisition, with an acquisition frequency of 1 time / minute and a parameter acquisition error of ≤±1%, and a visual aging trend report is generated through the host computer to achieve a comprehensive and accurate assessment of the LCD aging status;

[0031] S5. Based on multi-dimensional monitoring data, multiple safety protection mechanisms are added. These mechanisms include automatic power-off triggered by a settable temperature threshold, overcurrent and overvoltage protection, audible and visual warnings for abnormal sample parameters, and an emergency stop button, generating safety protection response data. Based on the safety protection response data, a rapid response of ≤0.3 seconds is achieved during the test, comprehensively avoiding safety hazards and sample damage risks.

[0032] The working principle and effects of the above technical solution are as follows: This testing method significantly improves the temperature uniformity of the LCD test area, reduces uneven aging caused by regional temperature differences, and avoids distorted test results. The optimized platform structure and power supply system enhance long-term operational reliability, increase continuous trouble-free operation time, and significantly reduce downtime. The modular adaptive fixture system improves the adaptability of LCDs of different sizes, reduces the additional cost of fixture replacement, and lowers testing investment. The multi-dimensional monitoring module makes parameter acquisition more comprehensive and accurate, enhances the scientific nature of aging condition assessment, and reduces misjudgments caused by incomplete data. Multiple safety protection mechanisms effectively avoid safety hazards such as overcurrent, overvoltage, and sample abnormalities, reducing the risk of sample damage. This ensures both the safety and stability of the testing process and improves the accuracy and efficiency of product quality assessment, making aging testing more efficient and reliable.

[0033] In one embodiment of the present invention, S1 includes:

[0034] S11. Define the core area range for display screen aging test, determine the target threshold for temperature control, and generate a set of basic parameters for the test area.

[0035] S12. Based on the basic parameter set of the test area, plan a multi-point uniform temperature layout scheme, determine the number and installation location of distributed heating units, and form heating unit deployment data.

[0036] S13. Based on the heating unit deployment data, plan the path and cross-sectional specifications of the annular circulating air duct and generate annular circulating air duct design data; integrate the heating unit deployment data and annular circulating air duct design data to build the basic environmental framework for display screen aging test.

[0037] S14. Adjust and debug the temperature of the basic environmental framework by dynamically adjusting the heating power and airflow velocity to optimize the temperature distribution.

[0038] S15. Continuously monitor the temperature data at each point in the test area, compare the temperature deviation values, and finally form a display screen aging test environment with qualified temperature uniformity.

[0039] The working principle and effects of the above technical solution are as follows: This solution significantly improves the temperature uniformity of the display screen test area, reduces temperature differences between different areas, avoids inconsistent aging caused by uneven temperature distribution, and prevents distortion of test results. Dynamically adjusting the heating power and airflow velocity enhances the flexibility and accuracy of temperature control, making the temperature state of the test environment more stable. Continuous monitoring of the temperature at each point and comparing deviations allows for timely correction of temperature anomalies, ensuring that the test environment always meets standards. This provides a uniform and stable environmental foundation for LCD aging testing, reduces test interruptions or retests due to unsuitable environments, indirectly improving the smoothness of the overall test, better meeting the environmental requirements of high-precision aging testing, and preventing subsequent tests from being affected by initial environmental issues in the final evaluation results.

[0040] In one embodiment of the present invention, step S14 includes:

[0041] S141. Based on the basic environmental framework, start the temperature control system and the ring circulation air duct system to obtain the initial operating parameters of the system; based on the initial operating parameters of the system, collect real-time temperature data at each point in the test area to generate an initial temperature distribution dataset.

[0042] S142. Analyze the initial temperature distribution dataset, identify areas with uneven temperature distribution, and generate temperature regulation demand information.

[0043] S143. Based on the temperature regulation requirement information, adjust the output power of the distributed heating unit and generate power regulation parameters;

[0044] S144. Combine the power adjustment parameters to adjust the airflow speed of the annular circulation duct and generate duct flow rate adjustment data.

[0045] S145. Synchronize power adjustment parameters and duct flow rate adjustment data, continuously run the system and collect temperature data, generate optimized temperature distribution data, and complete the temperature distribution state optimization.

[0046] The working principle and effects of the above technical solution are as follows: The above steps significantly improve the uniformity of temperature distribution in the test area, reduce temperature differences between different points, avoid inconsistent LCD aging caused by local temperature imbalances, and prevent deviations in test results. Dynamically adjusting the heating power and airflow velocity enhances the flexibility and targeting of temperature control, making temperature adjustment more aligned with actual needs. Continuously collecting and analyzing temperature data allows for timely detection of temperature anomalies, preventing deviations from expanding and affecting the stability of the test environment. It can quickly respond to temperature adjustment needs and simultaneously optimize temperature control accuracy, providing a stable and consistent environmental foundation for subsequent aging tests, reducing test interruptions or retests due to temperature issues, indirectly improving overall test efficiency, and better adapting to the environmental requirements of high-precision aging tests.

[0047] In one embodiment of the present invention, S143 includes:

[0048] Extract temperature difference values ​​and uneven area distribution data from the temperature regulation demand information to generate power adjustment basis data;

[0049] Based on the power adjustment data, the optimization areas corresponding to each distributed heating unit are distinguished, and a unit adjustment priority sequence is generated.

[0050] Based on the unit adjustment priority sequence and combined with the temperature control accuracy standard, the power adjustment range of each heating unit is calculated to generate a preliminary power adjustment value;

[0051] The initial power adjustment value is compared with the rated power range of the heating unit, and the adjustment value that exceeds the range is corrected to generate compliant power adjustment data;

[0052] Integrate all compliant power adjustment data, associate them according to the heating unit number, and generate power adjustment parameters.

[0053] The working principle and effects of the above technical solution are as follows: This step improves the accuracy of power adjustment of distributed heating units, reduces temperature fluctuations caused by blind adjustments, and avoids the expansion of regional temperature differences due to improper adjustments. It differentiates the adjustment priorities of units, making adjustments more targeted, concentrating resources to optimize areas of uneven temperature, improving the efficiency of temperature uniformity improvement, and reducing wasted effort. It calculates the adjustment range in conjunction with temperature control accuracy standards, reducing residual temperature differences and making temperature adjustment more aligned with test requirements. It corrects adjustment values ​​exceeding the rated range, preventing overload damage to heating units, reducing equipment failure risks, and enhancing the operational stability of the temperature control system. It integrates compliant data and associates it by number, making power adjustment parameters clear and standardized, facilitating subsequent synchronization with airflow velocity, quickly reducing temperature deviations, ensuring the safe operation of heating units, and providing reliable support for achieving temperature uniformity standards in the test area.

[0054] In one embodiment of the present invention, S144 includes:

[0055] Extract the power change amplitude of each heating unit from the power regulation parameters to generate flow rate adjustment correlation data;

[0056] Based on the flow rate adjustment correlation data, the differences in heat diffusion demand in different test areas are analyzed to generate regional flow rate demand data.

[0057] Based on the regional flow velocity demand data and the overall flow capacity of the annular circulation duct, the target flow velocity value of each duct section is calculated to generate preliminary flow velocity adjustment data.

[0058] The initial flow rate adjustment data is compared with the rated flow rate range of the duct system, and values ​​that exceed the reasonable range are corrected to generate compliant flow rate adjustment data.

[0059] Integrate all compliant flow rate adjustment data, categorize them according to the location of the air duct section, and generate air duct flow rate adjustment data.

[0060] The working principle and effects of the above technical solution are as follows: By precisely linking the duct flow rate adjustment with the heating power changes through the above steps, the uniformity of temperature diffusion is improved, the temperature difference caused by local heat accumulation is reduced, and the non-uniformity of temperature in the test area is avoided. Analyzing the differences in heat diffusion requirements in different areas makes flow rate adjustment more targeted, reducing ineffective airflow consumption and improving energy utilization efficiency. Calculating the target flow rate in conjunction with the overall duct flow capacity reduces airflow turbulence caused by blind adjustment, making temperature conduction smoother. Correcting flow rate values ​​exceeding the rated range prevents the duct system from operating under overload, reduces equipment wear and failure, and enhances system operational stability. Categorizing and adjusting data according to the duct section location makes the flow rate adjustment commands clear and standardized, facilitating synchronous execution with power adjustment parameters. This solution can quickly adapt to temperature adjustment needs, accelerate the reduction of temperature differences, and ensure the safe and stable operation of the duct system, creating a uniform and stable temperature environment for the test area and laying a solid foundation for the accuracy of subsequent aging tests.

[0061] In one embodiment of the present invention, step S145 includes:

[0062] Integrate power regulation parameters and airflow velocity regulation data to form a system synchronous control command; based on the system synchronous control command, start the temperature control system and the annular circulating air duct system to run continuously.

[0063] During system operation, temperature information at various points in the test area is collected at a fixed frequency to generate a real-time temperature monitoring dataset.

[0064] By comparing the temperature values ​​at different points in the real-time temperature monitoring dataset, the temperature difference between each point is calculated, and the temperature difference analysis results are generated.

[0065] Refer to the temperature uniformity control standard to verify whether the temperature difference analysis results meet the requirements. If they do not meet the requirements, return to readjust the parameters. If they do meet the requirements, retain the current monitoring data.

[0066] Organize the real-time temperature monitoring data that meets the requirements, classify and summarize them according to the test area points, generate optimized temperature distribution data, and complete the optimization of temperature distribution status.

[0067] The working principle and effects of the above technical solution are as follows: This step enables precise coordination between power adjustment and airflow rate adjustment, improving the efficiency of temperature distribution optimization, reducing temperature imbalance caused by single adjustment, and avoiding repeated occurrences of local temperature differences. Fixed-frequency temperature data collection allows for real-time capture of temperature changes at each point, reducing the omission of temperature anomalies and preventing deviations from affecting the testing environment. Comparative calculation of temperature differences at different points accurately reflects the temperature uniformity status, reducing errors caused by subjective judgment. Timely parameter reversion when calibration fails to meet standards ensures that the temperature distribution always conforms to the standard, preventing unqualified environments from entering subsequent testing stages. Categorized and summarized compliant data makes the temperature distribution status clearly traceable, facilitating subsequent traceability. This approach can quickly optimize the temperature uniformity of the test area while ensuring environmental stability and traceability, providing accurate and consistent environmental support for LCD aging tests and reducing testing errors or rework caused by temperature issues.

[0068] In one embodiment of the present invention, S2 includes:

[0069] S21. Based on the completed display screen aging test environment, analyze the platform structure load-bearing requirements and operational stability requirements, and select aluminum alloy as the main frame material.

[0070] S22. Develop an integrated aluminum alloy forming process, determine the frame dimensions and connection methods, and generate platform structure optimization parameters.

[0071] S23. Analyze the operational risks of the power supply system, design a dual-redundant power supply architecture, and clarify the connection method and switching logic of the main and backup power supply modules.

[0072] S24. Configure the voltage stabilizing and filtering circuit components, determine the circuit parameters and wiring methods, and generate power supply system optimization data; integrate the platform structure optimization parameters and power supply system optimization data to form optimized platform operating parameters.

[0073] S25. Based on the optimized platform operating parameters, build a complete test platform and conduct long-term load testing, recording the operating status data; based on the long-term load test data, verify the continuous fault-free operation time to ensure that the preset standard is met and reduce the failure downtime rate.

[0074] The working principle and effects of the above technical solution are as follows: This step improves the structural stability of the test platform, reduces mechanical wear and deformation under long-term high-load operation, and avoids structural loosening affecting test accuracy. The dual-redundant power supply design enhances power supply continuity, reduces voltage fluctuations, and prevents forced test termination due to power outages. The voltage stabilizing and filtering circuit makes the output voltage more stable, reducing damage to LCD samples from voltage anomalies. Long-term load testing fully verifies the platform's operational capabilities, significantly reducing downtime and enhancing long-term operational reliability. Integrating structural and power supply optimization parameters makes the platform construction more scientific and reasonable, reducing subsequent debugging and rework. It ensures both stable and continuous testing processes, reduces equipment maintenance costs, provides solid hardware support for testing multi-specification LCDs, and avoids limitations on test efficiency and evaluation accuracy due to insufficient platform stability.

[0075] In one embodiment of the present invention, S25 includes:

[0076] Based on the optimized platform operating parameters, the specifications and quantities of the core components required to build the test platform are calculated, and a component preparation list is generated.

[0077] Referring to the component preparation list, integrate the core components, including an aluminum alloy frame, a dual-power supply module, and a voltage regulator and filter circuit, to complete the overall assembly of the test platform and form a preliminary complete test platform; start the preliminary test platform for a short trial run and collect initial operating data of each system;

[0078] Analyze initial operating data, check for component compatibility deviations or connection problems, adjust component installation status and operating parameters, and generate platform calibration data;

[0079] Based on the platform calibration data, set long-term load test conditions, continuously run the test platform, and record the platform operation status data in real time;

[0080] Extract fault-free runtime data from long-term load testing, compare it with preset standards, and generate runtime verification results. Based on the runtime verification results, confirm the platform's continuous fault-free runtime target, and effectively reduce the failure downtime rate.

[0081] The working principle and effects of the above technical solution are as follows: This step improves the standardization of test platform assembly, reduces omissions or redundancies during component preparation, and avoids rework due to incompatible component specifications. Short-term trial runs promptly collect initial operating data, enabling rapid troubleshooting of component compatibility deviations or connection problems, reducing unexpected failures during long-term operation. Adjusting component states and parameters generates calibration data, making the platform operation more closely match design requirements and improving operational accuracy. Long-term load testing fully verifies the platform's endurance; real-time recording of operating status provides a comprehensive understanding of platform performance; comparison of fault-free duration ensures compliance, significantly reducing downtime. This not only guarantees the long-term reliability of the platform but also reduces subsequent maintenance costs, avoids interruptions to the testing process due to platform instability, provides continuous and stable hardware support for LCD aging testing, makes the testing process smoother and more efficient, and further ensures the accuracy of test results.

[0082] In one embodiment of the present invention, S3 includes:

[0083] S31. Organize the size parameters and installation and fixing requirements of LCDs of different specifications to generate an LCD adaptation requirement list; based on the adaptation requirement list, select the screw adjustment structure as the pressure block drive method and determine the screw adjustment stroke range;

[0084] S32. Design the specifications and installation interfaces of replaceable buffer pads to match the fixing requirements of different LCDs and generate pad adaptation data.

[0085] S33. Integrate lead screw adjustment parameters and shim adaptation data to form clamp adjustment data that adapts to LCDs of different sizes and installation specifications;

[0086] S34. Based on the fixture adjustment data, assemble a modular adaptive fixture system and conduct multi-specification LCD sample fixing tests; record the fixture adaptation process time and operation difficulty, verify the adaptation efficiency improvement effect, and confirm that sample fixing can be completed without replacing the fixture.

[0087] The working principle and effects of the above technical solution are as follows: This step improves the compatibility efficiency of LCDs of different specifications, significantly reduces the time and cost of fixture replacement, and avoids test delays caused by the preparation of dedicated fixtures. The lead screw adjustment structure combined with replaceable buffer pads enhances the versatility of the fixture, reduces the investment in multiple customized fixtures, and allows LCDs of different sizes and installation requirements to be quickly fixed. A list of compatibility requirements makes adjustments more targeted, reduces the trouble caused by blind operation, and multi-specification sample fixing tests verify the compatibility effect, ensuring that samples can be stably fixed without changing fixtures, avoiding improper fixing from affecting test accuracy. It can quickly respond to diverse test needs, simplify the test preparation process, reduce operational difficulty, make aging tests more efficient and flexible, reduce resource waste, and further improve the overall smoothness and economy of testing.

[0088] In one embodiment of the present invention, step S4 includes:

[0089] S41. Review the key performance indicators during the LCD aging process and determine temperature, operating voltage, brightness decay, pixel response time, and number of dead pixels as the core monitoring parameters.

[0090] S42. Select suitable sensors and data acquisition modules, determine the installation location and connection method of each module, and generate monitoring module configuration data;

[0091] S43. Integrate each monitoring module into the test platform, build a multi-dimensional monitoring system, and complete module debugging and calibration; start the monitoring system, synchronously collect data of each core parameter, and generate multi-dimensional raw monitoring data.

[0092] S44. Set a data acquisition frequency standard, collect and filter raw monitoring data on a regular basis, and control parameter acquisition error;

[0093] S45. Transmit the processed monitoring data to the host computer and generate a visual aging trend report through data processing algorithms; analyze the LCD aging status based on the visual report to complete a comprehensive and accurate assessment of product reliability.

[0094] The working principle and effects of the above technical solution are as follows: This step broadens the parameter monitoring dimensions of LCD aging tests, reduces the problem of one-sided data acquisition in traditional tests, and avoids incomplete product reliability assessments due to missing key indicators. Adapted sensors and acquisition modules improve the accuracy of data acquisition, and module debugging and calibration further control parameter acquisition errors, making the monitoring data more realistic and reliable. Timely acquisition and filtering of raw data reduces interference from invalid data and enhances the effectiveness and consistency of the data. The host computer generates a visual aging trend report, making the LCD aging status intuitively presented, reducing subjective errors in the evaluation process, and improving the scientific nature of product reliability assessments. It can simultaneously capture multiple core indicators such as temperature, voltage, and brightness, and can deeply analyze aging patterns through data algorithms, avoiding misjudgments due to incomplete information. It simplifies the data processing flow, enhances the persuasiveness of the evaluation results, provides comprehensive and reliable data support for LCD product quality improvement, and makes aging tests more valuable for reference.

[0095] In one embodiment of the present invention, step S5 includes:

[0096] S51. Analyze the types of safety risks that may occur during the testing process and identify overheating, overcurrent, overpressure, and sample abnormalities as the main protection scenarios;

[0097] S52. Set an adjustable temperature threshold standard, with the default threshold set to 60℃, and determine the trigger logic and execution path for automatic power-off; design an overcurrent and overvoltage detection circuit, set the overcurrent protection threshold to 5A, and clarify the execution method of the protection action;

[0098] S53. Select the audible and visual alarm components, determine the alarm volume to be ≥80dB and the light flashing frequency to be 2Hz, and design the judgment logic for abnormal sample parameters.

[0099] S54. Configure the emergency stop button, determine the installation location and trigger response mechanism, integrate various protection measures, and generate safety protection response data;

[0100] S55. Integrate the safety protection mechanism into the test platform to conduct simulated fault tests and verify the response speed of the protection system; during the actual test, monitor the safety protection response data in real time, trigger corresponding protection measures, and avoid safety hazards and sample damage risks.

[0101] The working principle and effects of the above technical solution are as follows: This step improves the comprehensiveness of safety protection in LCD aging tests, reduces the vulnerabilities of traditional single-protection systems, and avoids overlooking risks such as overheating, overcurrent, overvoltage, and sample abnormalities. Clearly defined temperature and overcurrent threshold standards allow for more precise triggering of protective actions, reducing false triggers or delayed triggers and lowering the probability of LCD sample damage due to circuit failures. Audible and visual alarm components enable rapid detection of abnormal situations, and the emergency stop button provides immediate emergency protection, enhancing the flexibility and timeliness of protection. Simulated fault testing fully verifies the response capability of the protection system, ensuring rapid risk handling during actual testing and preventing the escalation of hidden dangers and potential safety accidents. It comprehensively covers core safety risk scenarios and strengthens the safety defense line through precise triggering and rapid response; it protects test samples and equipment while creating a safe environment for operators, allowing LCD aging tests to proceed efficiently under safe and controllable conditions, avoiding interruptions to the testing process or unnecessary losses due to safety issues.

[0102] One embodiment of the present invention, such as Figure 2 As shown, a system for implementing the display screen reliability aging test method as described above, the system comprising:

[0103] Environment construction module: The multi-point temperature uniformity layout of the display screen aging test area is planned, and the distributed heating unit deployment scheme and the ring circulation air duct design data are generated. Based on the distributed heating unit deployment scheme and the ring circulation air duct design data, the display screen aging test environment is constructed. The display screen aging test environment has temperature uniformity control, which controls the temperature deviation of the LCD test area within ±0.5℃, overcoming the pain point of insufficient temperature uniformity of traditional platforms.

[0104] System optimization module: Based on the constructed display screen aging test environment, the platform structure and power supply system are optimized. An integrated aluminum alloy frame and a dual-redundant power supply design are adopted, along with a voltage stabilizing and filtering circuit, to generate optimized platform operating parameters. According to the optimized platform operating parameters, the continuous fault-free operation time is increased to more than 1,000 hours, significantly reducing the failure downtime rate and enhancing long-term operational reliability.

[0105] Fixture adjustment module: Based on the optimized platform, a modular adaptive fixture system is designed. By combining a screw-adjustable pressure block with replaceable buffer pads, fixture adjustment data is generated to adapt to LCDs of different sizes and mounting specifications. Based on the fixture adjustment data, samples of LCDs of different sizes and multiple mounting specifications can be fixed without changing the fixtures, improving the adaptation efficiency by 60% and reducing testing costs.

[0106] Report generation module: Based on a modular adaptive fixture system, it integrates a multi-dimensional monitoring module to synchronously collect key parameters, including temperature, operating voltage, brightness decay, pixel response time, and number of dead pixels, generating multi-dimensional monitoring data; the multi-dimensional monitoring data is processed at high frequency, with a collection frequency of 1 time / minute and a parameter collection error of ≤±1%, and a visualized aging trend report is generated through the host computer to achieve a comprehensive and accurate assessment of the LCD aging status;

[0107] Mechanism Addition Module: Based on multi-dimensional monitoring data, multiple safety protection mechanisms are added. These mechanisms include automatic power-off triggered by a settable temperature threshold, overcurrent and overvoltage protection, audible and visual warnings for abnormal sample parameters, and an emergency stop button, generating safety protection response data. Based on this response data, a rapid response of ≤0.3 seconds is achieved during the testing process, comprehensively avoiding safety hazards and sample damage risks.

[0108] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for testing the reliability aging of a display screen, characterized in that, The method includes: S1. Plan the multi-point uniform temperature layout of the display screen aging test area, and generate a distributed heating unit deployment scheme and annular circulation air duct design data; construct the display screen aging test environment based on the distributed heating unit deployment scheme and annular circulation air duct design data. S2. Based on the constructed display screen aging test environment, optimize the platform structure and power supply system, and generate optimized platform operating parameters; S3. Based on the optimized platform, design a modular adaptive clamping system. By combining a screw-adjustable pressure block with replaceable buffer pads, generate clamping adjustment data that adapts to LCDs of different sizes and installation specifications. S4. Based on the modular adaptive fixture system, a multi-dimensional monitoring module is integrated to synchronously collect key parameters and generate multi-dimensional monitoring data; the multi-dimensional monitoring data is processed at high frequency and a visual aging trend report is generated through the host computer. S5. Based on multi-dimensional monitoring data, multiple security protection mechanisms are added to generate security protection response data.

2. The display screen reliability aging test method according to claim 1, characterized in that, S1 includes: S11. Define the core area range for display screen aging test, determine the target threshold for temperature control, and generate a set of basic parameters for the test area. S12. Based on the basic parameter set of the test area, plan a multi-point uniform temperature layout scheme, determine the number and installation location of distributed heating units, and form heating unit deployment data. S13. Based on the heating unit deployment data, plan the path and cross-sectional specifications of the annular circulating air duct and generate annular circulating air duct design data; integrate the heating unit deployment data and annular circulating air duct design data to build the basic environmental framework for display screen aging test. S14. Adjust and debug the temperature of the basic environmental framework by dynamically adjusting the heating power and airflow velocity to optimize the temperature distribution. S15. Continuously monitor the temperature data at each point in the test area, compare the temperature deviation values, and finally form a display screen aging test environment with qualified temperature uniformity.

3. The display screen reliability aging test method according to claim 2, characterized in that, S14 includes: S141. Based on the basic environmental framework, start the temperature control system and the ring circulation air duct system to obtain the initial operating parameters of the system; based on the initial operating parameters of the system, collect real-time temperature data at each point in the test area to generate an initial temperature distribution dataset. S142. Analyze the initial temperature distribution dataset, identify areas with uneven temperature distribution, and generate temperature regulation demand information. S143. Based on the temperature regulation requirement information, adjust the output power of the distributed heating unit and generate power regulation parameters; S144. Combine the power adjustment parameters to adjust the airflow speed of the annular circulation duct and generate duct flow rate adjustment data. S145. Synchronize power adjustment parameters and duct flow rate adjustment data, continuously run the system and collect temperature data, generate optimized temperature distribution data, and complete the temperature distribution state optimization.

4. The display screen reliability aging test method according to claim 3, characterized in that, S143 includes: Extract temperature difference values ​​and uneven area distribution data from the temperature regulation demand information to generate power adjustment basis data; Based on the power adjustment data, the optimization areas corresponding to each distributed heating unit are distinguished, and a unit adjustment priority sequence is generated. Based on the unit adjustment priority sequence and combined with the temperature control accuracy standard, the power adjustment range of each heating unit is calculated to generate a preliminary power adjustment value; The initial power adjustment value is compared with the rated power range of the heating unit, and the adjustment value that exceeds the range is corrected to generate compliant power adjustment data; Integrate all compliant power adjustment data, associate them according to the heating unit number, and generate power adjustment parameters.

5. The display screen reliability aging test method according to claim 3, characterized in that, S144 includes: Extract the power change amplitude of each heating unit from the power regulation parameters to generate flow rate adjustment correlation data; Based on the flow rate adjustment correlation data, the differences in heat diffusion demand in different test areas are analyzed to generate regional flow rate demand data. Based on the regional flow velocity demand data and the overall flow capacity of the annular circulation duct, the target flow velocity value of each duct section is calculated to generate preliminary flow velocity adjustment data. The initial flow rate adjustment data is compared with the rated flow rate range of the duct system, and values ​​that exceed the reasonable range are corrected to generate compliant flow rate adjustment data. Integrate all compliant flow rate adjustment data, categorize them according to the location of the air duct section, and generate air duct flow rate adjustment data.

6. The display screen reliability aging test method according to claim 1, characterized in that, S2 includes: S21. Based on the completed display screen aging test environment, analyze the platform structure load-bearing requirements and operational stability requirements, and select aluminum alloy as the main frame material. S22. Develop an integrated aluminum alloy forming process, determine the frame dimensions and connection methods, and generate platform structure optimization parameters. S23. Analyze the operational risks of the power supply system, design a dual-redundant power supply architecture, and clarify the connection method and switching logic of the main and backup power supply modules. S24. Configure the voltage stabilizing and filtering circuit components, determine the circuit parameters and wiring methods, and generate power supply system optimization data; integrate the platform structure optimization parameters and power supply system optimization data to form optimized platform operating parameters. S25. Based on the optimized platform operating parameters, build a complete test platform and conduct long-term load testing, and record the operating status data; based on the long-term load test data, verify the continuous fault-free operation time.

7. The display screen reliability aging test method according to claim 1, characterized in that, The S3 includes: S31. Organize the size parameters and installation and fixing requirements of LCDs of different specifications to generate an LCD adaptation requirement list; based on the adaptation requirement list, select the screw adjustment structure as the pressure block drive method and determine the screw adjustment stroke range; S32. Design the specifications and installation interfaces of replaceable buffer pads to match the fixing requirements of different LCDs and generate pad adaptation data. S33. Integrate lead screw adjustment parameters and shim adaptation data to form clamp adjustment data that adapts to LCDs of different sizes and installation specifications; S34. Based on the fixture adjustment data, assemble a modular adaptive fixture system and conduct multi-specification LCD sample fixing tests; record the fixture adaptation process time and operation difficulty, verify the adaptation efficiency improvement effect, and confirm that sample fixing can be completed without replacing the fixture.

8. The display screen reliability aging test method according to claim 1, characterized in that, The S4 includes: S41. Review the key performance indicators during the LCD aging process and determine temperature, operating voltage, brightness decay, pixel response time, and number of dead pixels as the core monitoring parameters. S42. Select suitable sensors and data acquisition modules, determine the installation location and connection method of each module, and generate monitoring module configuration data; S43. Integrate each monitoring module into the test platform, build a multi-dimensional monitoring system, and complete module debugging and calibration; start the monitoring system, synchronously collect data of each core parameter, and generate multi-dimensional raw monitoring data. S44. Set a data acquisition frequency standard, collect and filter raw monitoring data on a regular basis, and control parameter acquisition error; S45. Transmit the processed monitoring data to the host computer and generate a visual aging trend report through data processing algorithms; analyze the LCD aging status based on the visual report to complete a comprehensive and accurate assessment of product reliability.

9. The display screen reliability aging test method according to claim 1, characterized in that, The S5 includes: S51. Analyze the types of safety risks that may occur during the testing process and identify overheating, overcurrent, overpressure, and sample abnormalities as the main protection scenarios; S52. Set an adjustable temperature threshold standard, with the default threshold set to 60℃, and determine the trigger logic and execution path for automatic power-off; design an overcurrent and overvoltage detection circuit, set the overcurrent protection threshold to 5A, and clarify the execution method of the protection action; S53. Select the audible and visual alarm components, determine the alarm volume to be ≥80dB and the light flashing frequency to be 2Hz, and design the judgment logic for abnormal sample parameters. S54. Configure the emergency stop button, determine the installation location and trigger response mechanism, integrate various protection measures, and generate safety protection response data; S55. Integrate the security protection mechanism into the test platform to conduct simulated fault tests and verify the response speed of the protection system; during the actual test, monitor the security protection response data in real time and trigger corresponding protection measures.

10. A system for implementing the display screen reliability aging test method as described in claim 1, characterized in that, The system includes: Environment construction module: Plans a multi-point temperature uniformity layout for the display screen aging test area, generates a distributed heating unit deployment scheme and annular circulation air duct design data; constructs the display screen aging test environment based on the distributed heating unit deployment scheme and annular circulation air duct design data; System optimization module: Based on the constructed display screen aging test environment, optimize the platform structure and power supply system, and generate optimized platform operating parameters; Fixture adjustment module: Based on the optimized platform, a modular adaptive fixture system is designed. By combining a screw-adjustable pressure block with replaceable buffer pads, fixture adjustment data is generated to adapt to LCDs of different sizes and installation specifications. Report generation module: Based on a modular adaptive fixture system, it integrates a multi-dimensional monitoring module to synchronously collect key parameters and generate multi-dimensional monitoring data; it performs high-frequency acquisition and processing on the multi-dimensional monitoring data and generates a visualized aging trend report through a host computer; Mechanism addition module: Based on multi-dimensional monitoring data, multiple security protection mechanisms are added to generate security protection response data.

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