Methods, apparatus, electronic devices and storage media for reliability testing of display panels

Abstract

This invention discloses a method, apparatus, electronic device, and storage medium for testing the reliability of a display panel. The method includes: determining initial state data of the display panel; placing the display panel in a constant temperature and humidity testing device and calculating the test duration; determining the state data of the display panel at the end of the current test cycle based on the test duration, the state data including defective pixel data and moisture penetration images; and generating a test report for the display panel based on the defective pixel data and moisture penetration images at the end of each test cycle. This invention simulates a high-temperature and high-humidity environment for testing the display panel in a constant temperature and humidity testing device, and acquires defective pixel data and moisture penetration images at the end of each test cycle to generate a test report. This enables the evaluation of the display panel's performance under high-temperature and high-humidity conditions, improving the reliability of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display panel testing technology, and in particular to a method, apparatus, electronic device, and storage medium for testing the reliability of display panels. Background Technology

[0002] After production, to ensure product reliability, display panels are typically tested under normal usage conditions to assess various functions, such as whether the screen quality changes after prolonged use under normal conditions.

[0003] However, in addition to normal operating environments, display panels may also be used in extreme environments, such as high temperature and high humidity environments. Testing display panels under normal operating conditions cannot guarantee the quality of the manufactured display panels under high temperature and high humidity environments. Therefore, a method is needed to test the performance of display panels under high temperature and high humidity environments to ensure the quality of display panels under such environments. Summary of the Invention

[0004] This invention provides a method, apparatus, electronic device, and storage medium for testing the reliability of display panels, in order to solve the problem that existing testing methods cannot guarantee the quality of display panels in high temperature and high humidity environments.

[0005] In a first aspect, the present invention provides a method for testing the reliability of a display panel, wherein the reliability test includes multiple test cycles, including:

[0006] Determine the initial state data of the display panel to be tested;

[0007] The display panel was placed in a constant temperature and humidity testing device and the test duration was calculated.

[0008] When the current test cycle ends based on the test duration, the status data of the display panel after the current test cycle ends is determined, and the status data includes defective pixel data and moisture penetration image.

[0009] When the test ends based on the test duration, a test report for the display panel is generated based on the defective pixel data and moisture penetration image of the display panel at the end of each test cycle.

[0010] Secondly, the present invention provides a display panel reliability testing apparatus, wherein the reliability test includes multiple test cycles, including:

[0011] The initial state data determination module is used to determine the initial state data of the display panel to be tested.

[0012] The testing module is used to place the display panel in a constant temperature and humidity testing device and calculate the test duration;

[0013] The test status data determination module is used to determine the status data of the display panel after the current test cycle ends, based on the test duration;

[0014] The test report generation module is used to generate a test report for the display panel based on the status data of the display panel at the end of each test cycle when the test ends according to the test duration.

[0015] Thirdly, the present invention provides an electronic device, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the display panel reliability testing method described in the first aspect of the present invention.

[0019] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the display panel reliability testing method described in the first aspect of the present invention.

[0020] In this embodiment of the invention, after determining the initial state data of the display panel to be tested, the display panel is placed in a constant temperature and humidity testing device and the test duration is calculated. When the current test cycle ends based on the test duration, the state data of the display panel at the end of the current test cycle is determined. The state data includes defective pixel data and moisture penetration images. When the test ends based on the test duration, a test report for the display panel is generated based on the defective pixel data and moisture penetration images at the end of each test cycle. This achieves the simulation of a high-temperature and high-humidity environment for testing the display panel in a constant temperature and humidity testing device, and obtains defective pixel data and moisture penetration images at the end of each test cycle. The test report is then generated based on the defective pixel data and moisture penetration images, thereby testing the display panel's performance quality under high-temperature and high-humidity conditions through constant temperature and humidity testing, and improving the reliability of the display panel under such conditions.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of a display panel reliability testing method provided in Embodiment 1 of the present invention;

[0024] Figure 2 This is a flowchart of a display panel reliability testing method provided in Embodiment 2 of the present invention;

[0025] Figure 3 This is a schematic diagram of marking defective pixels in an embodiment of the present invention;

[0026] Figure 4 This is a flowchart illustrating the classification of defective pixels in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the water penetration distance in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of a display panel reliability testing device provided in Embodiment 3 of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] Example 1

[0032] Figure 1 This is a flowchart of a display panel reliability testing method provided in Embodiment 1 of the present invention. This embodiment is applicable to testing the performance of display panels in high temperature and high humidity environments. The method can be executed by a display panel reliability testing device, which can be implemented in hardware and / or software and can be configured in an electronic device, such as... Figure 1As shown, the reliability testing method for this display panel includes:

[0033] S101. Determine the initial state data of the display panel to be tested.

[0034] The display panel in this embodiment can be a semi-finished panel that can display images after being powered on, or it can be a finished display panel. The reliability test can test the performance of the display panel under constant temperature and humidity. The display panel to be tested can be a display panel without damage or short-circuited pixels.

[0035] Before putting the display panel to be tested into operation, the display panel can be powered on to display a test screen and record the defective pixels in the test screen as initial state data of the display panel. For example, a color test screen and a white test screen can be displayed on the display panel sequentially. When the color test screen is displayed, defective pixels are marked on the display panel with a first symbol (such as a circle), and when the white test screen is displayed, defective pixels are marked on the display panel with a second symbol (such as a triangle). Initial state symbols (such as numbers) are added to the marked defective pixels, and the number of defective pixels of different types is recorded as initial state data. By determining the initial state data of the display panel, defective pixels generated by the test can be distinguished in subsequent test cycles.

[0036] S102, Place the display panel in the constant temperature and humidity test equipment and calculate the test duration.

[0037] The reliability test can be performed on the display panel under constant temperature and humidity. For example, the temperature can be 85°C and the humidity can be 85%. Of course, other temperatures and other humidity levels are also possible. This embodiment does not limit the temperature and humidity of the test.

[0038] In this embodiment, after the constant temperature and humidity testing equipment is turned on, the target temperature and target humidity of the constant temperature and humidity testing equipment are first set. When the temperature of the constant temperature and humidity testing equipment reaches the target temperature and the humidity reaches the target humidity, the display panel is placed in the constant temperature and humidity testing equipment and the timer is started to calculate the test duration.

[0039] S103. When the current test cycle ends based on the test duration, determine the status data of the display panel after the current test cycle ends. The status data includes defective pixel data and moisture penetration image.

[0040] The reliability test in this embodiment has multiple test cycles. For example, the test is calculated in hours. The first test cycle for the reliability of the display panel is 250 hours, the second test cycle is 500 hours, the third test cycle is 750 hours, and so on, with the last test cycle being 1750 hours. That is, the test duration is calculated from the start of the reliability test. When the test duration reaches 250 hours, the first test cycle ends. When the test duration reaches 500 hours, the second test cycle ends, and so on.

[0041] When the test duration reaches the end of the current test cycle, the timer can be paused, and the display panel can be removed from the constant temperature and humidity test equipment and left to stand. Then, the display panel is powered on and the corresponding test screen is displayed. Defective pixels are marked on the display panel with the symbol of the current test cycle, and water penetration images are taken of the water seepage area at the edge of the display panel. The marked defective pixels and water penetration images are used as the status data after the end of the current test cycle.

[0042] If the current test cycle is not the last test cycle, after determining the status data of the display panel after the end of the current test cycle, the display panel will be placed back into the constant temperature and humidity test equipment for the next test cycle, until the last test cycle.

[0043] S104. When the test ends based on the test duration, generate a test report for the display panel based on the defective pixel data and moisture penetration image of the display panel at the end of each test cycle.

[0044] When the test duration reaches the end of the last test cycle, the reliability test of the display panel is considered complete. A test report for the display panel can be generated based on the defective pixel data and moisture penetration images of the display panel at the end of each test cycle.

[0045] Specifically, the test report can be generated based on the defective pixel data of the display panel after each test cycle, including the total number of defective pixels generated during the test, the test cycle in which the number of defective pixels exceeds a preset threshold, the type of defective pixels, and the number of defective pixels of the same type. It can also be generated based on the water penetration image at the end of each test cycle to determine the water penetration distance and estimate the water penetration time.

[0046] In this embodiment of the invention, after determining the initial state data of the display panel to be tested, the display panel is placed in a constant temperature and humidity testing device and the test duration is calculated. When the current test cycle ends based on the test duration, the state data of the display panel at the end of the current test cycle is determined. The state data includes defective pixel data and moisture penetration images. When the test ends based on the test duration, a test report for the display panel is generated based on the defective pixel data and moisture penetration images at the end of each test cycle. This achieves the simulation of a high-temperature and high-humidity environment for testing the display panel in a constant temperature and humidity testing device, and obtains defective pixel data and moisture penetration images at the end of each test cycle. The test report is then generated based on the defective pixel data and moisture penetration images, thereby testing the display panel's performance quality under high-temperature and high-humidity conditions through constant temperature and humidity testing, and improving the reliability of the display panel under such conditions.

[0047] Example 2

[0048] Figure 2 This is a flowchart of a display panel reliability testing method provided in Embodiment 2 of the present invention. This embodiment of the present invention is an optimization based on Embodiment 1 described above, such as... Figure 2 As shown, the reliability testing method for this display panel includes:

[0049] S201. Determine the initial state data of the display panel to be tested.

[0050] The display panel in this embodiment can be a semi-finished panel that can display images after being powered on, or it can be a finished display panel. The reliability test can test the performance of the display panel under constant temperature and humidity. The display panel to be tested can be a display panel without damage or short-circuited pixels.

[0051] like Figure 3 As shown, before putting the display panel into testing, the display panel can be powered on and the color test screen and the white test screen can be displayed in sequence. Defective pixels found under the color test screen are marked with a circular symbol on the display panel, and defective pixels found under the white test screen are marked with a triangle symbol. The number "1" is marked inside the circular and triangle symbols to indicate the initial state.

[0052] In one embodiment, the tester can input the marked data into a computer to obtain the initial state data of the display panel, such as the number of defective pixels and the type of the test image.

[0053] In another embodiment, a camera can be used to capture images of the display panel marked with the above symbols, and the symbols can be identified using image recognition technology to obtain the water discharge status data of the display panel.

[0054] S202, Place the display panel in the constant temperature and humidity test equipment and calculate the test duration.

[0055] In this embodiment, the reliability test can be performed on the display panel under constant temperature and humidity. Taking a temperature of 85°C and a humidity of 85% as an example, when the temperature of the constant temperature and humidity test equipment reaches 85°C and the humidity reaches 85%, the display panel is placed in the constant temperature and humidity test equipment in a preset manner, and the timer on the constant temperature and humidity test equipment is started to calculate the test duration.

[0056] S203. Determine whether the test duration has reached the end of the current test cycle.

[0057] In this embodiment, the total test duration for the display panel is 1750 hours. Each test cycle consists of 250 hours. Therefore, the test cycles can include 250 hours, 500 hours, 750 hours, 1000 hours, 1250 hours, 1500 hours, and 1750 hours. That is, the first test cycle ends when the test duration reaches 250 hours, the second test cycle ends when the test duration reaches 500 hours, and so on. Therefore, the test duration can be used to determine whether the current test cycle has ended. Taking the current test cycle of 250 hours as an example, when the test duration reaches 250 hours, it is determined that the current test cycle has ended, and S205 can be executed. Otherwise, S204 is executed.

[0058] S204. Continue timing the test duration.

[0059] If the current test duration is not the end of the current test cycle, such as not reaching 250 hours, then continue to calculate the test duration and return S203.

[0060] S205. Pause the test duration timing and display the test screen on the display panel.

[0061] At the end of the current test cycle, the timer on the constant temperature and humidity test equipment can be paused, and the display panel in the constant temperature and humidity test equipment can be removed, left to stand, and then powered on to display the test screen.

[0062] S206. Record the defective pixels in the test screen and determine the moisture penetration image as the status data of the display panel at the end of the current test cycle.

[0063] For example, after displaying the corresponding test screen on the display panel, defective pixels are marked on the display panel with the symbol of the current test cycle, and a water penetration image is taken of the water seepage area at the edge of the display panel. The marked defective pixels and the water penetration image are used as the status data after the current test cycle ends.

[0064] like Figure 3 As shown, assuming the current test cycle is 250hr, and the symbol for 250hr is the number "2", then defective pixels in the 250hr cycle can be marked on the display panel using the number "2", a circle, and a triangle. At the same time, the water seepage at the edge of the display panel is detected. If water seepage is found, a water seepage image is taken of the seepage area. The marked defective pixels and the water seepage image are used as the status data of the display panel after the 250hr cycle ends. Since the 250hr test cycle is not the last cycle, the display panel is placed back in the constant temperature and humidity equipment to continue testing, and the timer is controlled to continue timing. The tests are performed sequentially for 500hr, 750hr, 1000hr, 1250hr, 1500hr, and 1750hr cycles.

[0065] S207. When the test duration reaches the total test duration, calculate the total number of newly added defective pixels during the test.

[0066] For example, when the test duration reaches the total test duration, the reliability test is determined to be over, and the total number of newly added defective pixels during the test can be calculated based on the defective pixel data of each test cycle.

[0067] In one embodiment, the total number of defective pixels on the display panel can be counted, and the total number of defective pixels is the sum of the total number of defective pixels added during the test by subtracting the total number of defective pixels from the total number of defective pixels in the initial state of the display panel before the test.

[0068] In another embodiment, the sum of the number of new defective pixels added at the end of each test cycle can be calculated to obtain the total number of new defective pixels added during the test.

[0069] S208. Determine whether the total quantity is greater than or equal to the preset threshold.

[0070] Specifically, the preset threshold can be the maximum number of defective pixels allowed when the display panel is a qualified product. Different display panels can be set with different preset thresholds. The total number of defective pixels can be compared with the preset threshold. If the total number is greater than or equal to the preset threshold, S209 is executed, and if the total number is less than the preset threshold, S210 is executed.

[0071] S209. Determine the target test cycle based on the defective pixel data displayed on the panel at the end of each test cycle. The target test cycle is the test cycle when the number of defective pixels at the end of the test is greater than or equal to a preset threshold.

[0072] When the total number is greater than or equal to a preset threshold, it is determined that too many new defective pixels have been added during the test, and the display panel is unqualified. Then, the test cycle when the number of new defective pixels is greater than or equal to the preset threshold can be determined, so that the testers can determine the test cycle when the number of new defective pixels is greater than or equal to the preset threshold in order to evaluate the quality of the display panel.

[0073] For example, with a preset threshold of 30, if 3 defective pixels are added at the end of a 250hr test cycle, 5 defective pixels are added at the end of a 500hr test cycle, 15 defective pixels are added at the end of a 750hr test cycle, and 17 defective pixels are added at the end of a 1000hr test cycle, then it can be determined that the total number of defective pixels added at the end of a 1000hr test cycle is greater than the preset threshold.

[0074] S210. Classify defective pixels and determine the test cycle for different types of defective pixels.

[0075] In an optional embodiment, it can be determined whether the defective pixel is an edge defective pixel. If the defective pixel is not an edge defective pixel, it is determined whether the defective pixel is a defective pixel other than a preset type. If so, the number of defective pixels other than the preset type and the test cycle in which they occur are recorded. If the defective pixel is an edge defective pixel, it is determined whether the edge defective pixel is a short-circuit defective pixel. If so, the test cycle in which the short-circuit defective pixel occurs is determined and an image of the short-circuit defective pixel is captured. If not, it is determined whether the edge defective pixel is an incomplete display defective pixel. If the edge defective pixel is an incomplete display defective pixel, the test cycle in which the incomplete display defective pixel occurs is determined. If the edge defective pixel is not an incomplete display defective pixel, it is determined whether the defective pixel is a defective pixel other than a preset type.

[0076] In particular, due to the high temperature and high humidity environment, the probability of pixel defects occurring at the edge of the display panel is higher. Edge defective pixels can refer to defective pixels that occur on the edge of the display panel. These edge defective pixels can include short-circuit defective pixels and incomplete display defective pixels. Short-circuit defective pixels can be pixels that fail to light up and appear as black dots due to the short circuit caused by moisture in the high temperature and high humidity environment. Incomplete display defective pixels can be pixels that only light up half of the time due to the moisture in the high temperature and high humidity environment.

[0077] like Figure 4 The diagram shown is a flowchart for classifying defective pixels. Figure 4In the process, if the number of defective pixels is greater than or equal to a preset threshold, an alarm message is generated. If the number of defective pixels is less than the preset threshold, it is determined whether there are edge defective pixels among the defective pixels. If there are no edge defective pixels, they are classified as defective pixels outside of the newly added preset type. If there are edge defective pixels, it is determined whether the edge defective pixel is a short-circuit defective pixel. If it is a short-circuit defective pixel, the tester is notified to use a microscope to confirm the short-circuit defective pixel and acquire an image of the short-circuit defective pixel. If the edge defective pixel is not a short-circuit defective pixel, it is determined whether the edge defective pixel is an incompletely displayed defective pixel. If so, an alarm message is generated. If not, the edge defective pixel is classified as a pixel outside of the preset type. Finally, the tester sorts out the classification results of the defective pixels.

[0078] In one example, the classification results of defective pixels may include data such as the type and number of defective pixels, as well as the testing period in which the defective pixel occurred.

[0079] S211. Determine the water penetration distance and the time of water penetration based on the water penetration image displayed on the panel at the end of each test cycle.

[0080] In an optional embodiment, the maximum water penetration distance is determined from the water penetration image in the status data of the display panel at the end of each test cycle, the ratio of the maximum water penetration distance to the water penetration rate is calculated, and the difference between the test duration at the end of the test cycle and the ratio is calculated to obtain the water penetration time.

[0081] like Figure 3 As shown, after each test cycle, the display panel is turned on. First, it is determined whether water seepage has occurred in designated area A of the display panel. If so, an image of water seepage is taken, such as... Figure 4 As shown, the maximum water penetration distance d in the water penetration image is the distance from the outermost pixel of the display panel to the deepest point of water penetration. Figure 3 The maximum water penetration distance d in the three regions is calculated. The ratio of the maximum water penetration distance d to the water permeability a is calculated. The difference between the length of the test period and the ratio is calculated to obtain the water penetration time.

[0082] For example, assuming that the maximum water penetration distance is d after 750hr, and the water penetration rate is a, then the water penetration time T = 750hr - d / a, thereby evaluating the water penetration performance of the display panel through the water penetration time T.

[0083] In another embodiment, the maximum water penetration distance d can be calculated after each test cycle, and the water penetration performance of the display panel can be evaluated by comparing the maximum water penetration distance d with the water penetration distance threshold of the test cycle.

[0084] S212. Generate a test report for the test display panel by using the total number, the target test cycle when the number of defective pixels is greater than or equal to a preset threshold, the test cycle when different types of defective pixels occur, the water immersion distance and the water penetration time in each test cycle.

[0085] This embodiment does not limit the format and content of the test report. In one example, the test report can be generated using the total number of defective pixels, the number of defective pixels exceeding a preset threshold to make the test cycle, the test cycle for different types of defective pixels, the water penetration distance and occurrence time in each test cycle. Specifically, different data can be used to generate the test report according to the requirements, so that analysts can evaluate the quality of the display panel based on the test report.

[0086] In this embodiment, after determining the initial state data of the display panel to be tested, the display panel is placed in a constant temperature and humidity testing device, and the test duration is calculated. It is then determined whether the test duration has reached the end of the current test cycle. If so, the test duration timing is paused, and a test screen is displayed on the display panel. Defective pixels and moisture penetration images in the test screen are recorded as the state data of the display panel at the end of the current test cycle. When the test duration reaches the total test duration, the total number of newly added defective pixels during the test is calculated, and it is determined whether the total number is greater than or equal to a preset threshold. If so, a target test cycle is determined based on the defective pixel data of the display panel at the end of each test cycle. The target test cycle is the test cycle where the number of defective pixels at the end of the test is greater than or equal to the preset threshold. If not, the defective pixels are classified, and different types of occurrences are determined. The test cycle for defective pixels is determined by analyzing the moisture penetration image of the display panel at the end of each test cycle to identify the moisture penetration distance and time. Finally, a test report for the display panel is generated using the total number of defective pixels, the target test cycle when the number of defective pixels is greater than or equal to a preset threshold, the test cycle for different types of defective pixels, the moisture penetration distance in each test cycle, and the moisture penetration time. This system simulates a high-temperature and high-humidity environment in a constant-temperature and humidity test chamber to test the display panel and acquire defective pixel data and moisture penetration images at the end of each test cycle. Based on this data, a test report is generated, allowing for the testing of the display panel's performance under high-temperature and high-humidity conditions through constant-temperature and humidity testing, thereby improving the reliability of the display panel in such environments.

[0087] Furthermore, the test report for the display panel is generated by taking the total number of defective pixels, the target test cycle when the number of defective pixels is greater than or equal to the preset threshold, the test cycle when different types of defective pixels occur, the water immersion distance and the water penetration time in each test cycle. This allows for a multi-dimensional data evaluation of the display panel's performance in high temperature and high humidity environments, resulting in a more comprehensive display panel quality assessment.

[0088] Example 3

[0089] Figure 6 This is a schematic diagram of a display panel reliability testing device provided in Embodiment 3 of the present invention. Figure 6 As shown, the display panel reliability testing apparatus includes:

[0090] The initial state data determination module 601 is used to determine the initial state data of the display panel to be tested.

[0091] Test module 602 is used to place the display panel in a constant temperature and humidity test device and calculate the test duration;

[0092] The test status data determination module 603 is used to determine the status data of the display panel after the current test cycle ends, based on the test duration;

[0093] The test report generation module 604 is used to generate a test report for the display panel based on the status data of the display panel at the end of each test cycle when the test ends according to the test duration.

[0094] Optionally, the initial state data determination module 601 includes:

[0095] A detection screen display unit is used to display the detection screen on the display panel;

[0096] An initial state data recording unit is used to record defective pixels in the detection screen as initial state data of the display panel.

[0097] Optionally, the test module 602 includes:

[0098] Temperature and humidity setting unit, used to set the target temperature and target humidity of the constant temperature and humidity testing equipment;

[0099] The testing unit is used to place the display panel in the constant temperature and humidity testing equipment and start a timer to calculate the test duration when the temperature and humidity of the constant temperature and humidity testing equipment reach the target temperature and humidity.

[0100] Optionally, the test status data determination module 603 includes:

[0101] The test cycle end determination unit is used to determine whether the test duration has reached the end duration of the current test cycle;

[0102] The timing unit continues to keep track of the test duration and returns to the test cycle end judgment unit.

[0103] The pause test unit is used to pause the timing of the test duration and display the test screen on the display panel;

[0104] The defective pixel and moisture penetration image recording unit is used to record defective pixels and determine moisture penetration images in the detection screen, as state data of the display panel at the end of the current test cycle.

[0105] Optionally, the test report generation module 604 includes:

[0106] The defective pixel count calculation unit is used to calculate the total number of defective pixels added during the test when the test duration reaches the total test duration.

[0107] A total quantity determination unit is used to determine whether the total quantity is greater than or equal to a preset threshold.

[0108] The target test cycle determination unit is used to determine the target test cycle based on the defective pixel data of the display panel at the end of each test cycle. The target test cycle is the test cycle when the number of defective pixels at the end of the test is greater than or equal to the preset threshold.

[0109] A defective pixel classification and test cycle determination unit is used to classify the defective pixels and determine the test cycle for different types of defective pixels.

[0110] A water penetration distance and actual occurrence determination unit is used to determine the water penetration distance and water penetration occurrence time based on the water penetration image on the display panel at the end of each test cycle;

[0111] The test report generation unit is used to generate a test report for the display panel by using the total number, the target test cycle when the number of defective pixels is greater than or equal to the preset threshold, the test cycle when different types of defective pixels occur, the water immersion distance of each test cycle, and the water penetration time.

[0112] Optionally, the defective pixel classification and test cycle determination unit includes:

[0113] The first judgment subunit is used to determine whether the defective pixel is an edge defective pixel.

[0114] The second judgment subunit is used to determine whether the defective pixel is a defective pixel other than a preset type when the defective pixel is not an edge defective pixel. If so, the number of defective pixels other than the preset type and the test cycle in which they occurred are recorded.

[0115] The third judgment subunit is used to determine whether the edge defective pixel is a short-circuit defective pixel when the defective pixel is an edge defective pixel.

[0116] A short-circuit defective pixel determination subunit is used to determine the test cycle when the short-circuit defective pixel occurs and to capture an image of the short-circuit defective pixel.

[0117] The incomplete display defective pixel determination subunit is used to determine whether the edge defective pixel is an incomplete display defective pixel;

[0118] The test cycle determination subunit is used to determine the test cycle when the edge defective pixel is an incompletely displayed defective pixel, and to return to the second judgment subunit when the edge defective pixel is not an incompletely displayed defective pixel.

[0119] Optionally, the water penetration distance and actual occurrence determination unit includes:

[0120] The maximum water penetration distance determination subunit is used to determine the maximum water penetration distance from the water penetration image in the status data of the display panel at the end of each test cycle;

[0121] The ratio calculation subunit is used to calculate the ratio of the maximum water penetration distance to the water permeability coefficient;

[0122] The moisture penetration time calculation subunit is used to calculate the difference between the test duration at the end of the test cycle and the ratio to obtain the moisture penetration time.

[0123] The display panel reliability testing device provided in this embodiment of the invention can execute the display panel reliability testing method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method execution.

[0124] Example 4

[0125] Figure 7A schematic diagram of an electronic device 40 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0126] like Figure 7 As shown, the electronic device 40 includes at least one processor 41 and a memory, such as a read-only memory (ROM) 42 or a random access memory (RAM) 43, communicatively connected to the at least one processor 41. The memory stores computer programs executable by the at least one processor. The processor 41 can perform various appropriate actions and processes based on the computer program stored in the ROM 42 or loaded into the RAM 43 from storage unit 48. The RAM 43 may also store various programs and data required for the operation of the electronic device 40. The processor 41, ROM 42, and RAM 43 are interconnected via a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0127] Multiple components in electronic device 40 are connected to I / O interface 45, including: input unit 46, such as keyboard, mouse, etc.; output unit 47, such as various types of monitors, speakers, etc.; storage unit 48, such as disk, optical disk, etc.; and communication unit 49, such as network card, modem, wireless transceiver, etc. Communication unit 49 allows electronic device 40 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0128] Processor 41 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 41 performs the various methods and processes described above, such as display panel reliability testing methods.

[0129] In some embodiments, the display panel reliability testing method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 40 via ROM 42 and / or communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the display panel reliability testing method described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the display panel reliability testing method by any other suitable means (e.g., by means of firmware).

[0130] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0131] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0132] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0133] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0134] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0135] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0136] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0137] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for testing the reliability of a display panel, characterized in that, Reliability testing includes multiple testing cycles, including: Determine the initial state data of the display panel to be tested; The display panel was placed in a constant temperature and humidity testing device and the test duration was calculated. When the current test cycle ends based on the test duration, the status data of the display panel after the current test cycle ends is determined, and the status data includes defective pixel data and moisture penetration image. When the test duration reaches the total test duration, calculate the total number of new defective pixels added during the test. Determine whether the total quantity is greater than or equal to a preset threshold; If so, the target test cycle is determined based on the defective pixel data of the display panel at the end of each test cycle. The target test cycle is the test cycle when the number of defective pixels at the end of the test is greater than or equal to the preset threshold. If not, classify the defective pixels and determine the test cycle for different types of defective pixels; The water penetration distance and the time of water penetration are determined based on the water penetration images of the display panel at the end of each test cycle. A test report for the display panel is generated using the total number of defective pixels, the target test cycle when the number of defective pixels is greater than or equal to the preset threshold, the test cycle when different types of defective pixels occur, the water penetration distance and the water penetration time in each test cycle. The determination of water penetration distance and water penetration time based on the water penetration image of the display panel at the end of each test cycle includes: The maximum distance of water penetration was determined from the moisture penetration image in the status data of the display panel at the end of each test cycle; Calculate the ratio of the maximum water penetration distance to the water permeability; The time of moisture infiltration is obtained by calculating the difference between the test duration at the end of the test cycle and the ratio.

2. The display panel reliability testing method according to claim 1, characterized in that, The determination of the initial state data of the display panel to be tested includes: The detection screen is displayed on the display panel; Defective pixels in the detection screen are recorded as initial state data for the display panel.

3. The display panel reliability testing method according to claim 1, characterized in that, The step of placing the display panel in a constant temperature and humidity testing device and calculating the test duration includes: Set the target temperature and target humidity for the constant temperature and humidity testing equipment; When the temperature and humidity of the constant temperature and humidity testing equipment reach the target temperature and humidity, the display panel is placed in the constant temperature and humidity testing equipment and the timer is started to calculate the test duration.

4. The display panel reliability testing method according to claim 1, characterized in that, The step of determining the status data of the display panel after the current test cycle ends, based on the test duration, includes: Determine whether the test duration has reached the end time of the current test cycle; If not, continue timing the test duration and return to the step of determining whether the test duration has reached the end time of the current test cycle; If so, pause the test duration timing and display the test screen on the display panel; Record the defective pixels in the detection screen and determine the moisture penetration image as the status data of the display panel at the end of the current test cycle.

5. The display panel reliability testing method according to claim 1, characterized in that, The process of classifying the defective pixels and determining the test cycle for different types of defective pixels includes: Determine whether the defective pixel is an edge defective pixel; When the defective pixel is not an edge defective pixel, determine whether the defective pixel is a defective pixel other than a preset type. If so, record the number of defective pixels other than the preset type and the test cycle in which they occurred. When the defective pixel is an edge defective pixel, determine whether the edge defective pixel is a short-circuit defective pixel; If so, determine the test cycle when the short-circuit defective pixel occurs and take an image of the short-circuit defective pixel; If not, determine whether the defective edge pixels are incompletely displayed defective pixels; When the defective edge pixel is an incompletely displayed defective pixel, the test cycle when the incompletely displayed defective pixel occurs is determined; If the defective pixel at the edge is not an incompletely displayed defective pixel, return to the step of determining whether the defective pixel is a defective pixel other than a preset type.

6. A display panel reliability testing device, characterized in that, Reliability testing includes multiple testing cycles, including: The initial state data determination module is used to determine the initial state data of the display panel to be tested. The testing module is used to place the display panel in a constant temperature and humidity testing device and calculate the test duration; The test status data determination module is used to determine the status data of the display panel after the current test cycle ends, based on the test duration; The test report generation module is used to generate a test report for the display panel based on the status data of the display panel at the end of each test cycle after the test is determined to be over based on the test duration. The test report generation module includes: The defective pixel count calculation unit is used to calculate the total number of defective pixels added during the test when the test duration reaches the total test duration. A total quantity determination unit is used to determine whether the total quantity is greater than or equal to a preset threshold. The target test cycle determination unit is used to determine the target test cycle based on the defective pixel data of the display panel at the end of each test cycle. The target test cycle is the test cycle when the number of defective pixels at the end of the test is greater than or equal to the preset threshold. A defective pixel classification and test cycle determination unit is used to classify the defective pixels and determine the test cycle for different types of defective pixels. The water penetration distance and occurrence time determination unit is used to determine the water penetration distance and water penetration occurrence time based on the water penetration image of the display panel at the end of each test cycle. The test report generation unit is used to generate a test report for the display panel by taking the total number, the target test cycle when the number of defective pixels is greater than or equal to the preset threshold, the test cycle when different types of defective pixels occur, the water immersion distance and the water penetration time of each test cycle. The unit for determining the distance and time of water penetration includes: The maximum water penetration distance determination subunit is used to determine the maximum water penetration distance from the water penetration image in the status data of the display panel at the end of each test cycle; The ratio calculation subunit is used to calculate the ratio of the maximum water penetration distance to the water permeability. The moisture penetration time calculation subunit is used to calculate the difference between the test duration at the end of the test cycle and the ratio to obtain the moisture penetration time.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the display panel reliability test method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the display panel reliability testing method according to any one of claims 1-5.

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