Display panel laser repair method and device, electronic equipment and storage medium

Abstract

The application belongs to the technical field of display panel repair, and discloses a display panel laser repair method, device, electronic equipment and storage medium, the method comprising: acquiring a panel image of an OLED display panel, performing defect detection on the panel image, obtaining defect positions, defect sizes, defect types and repair formulations of all laser-repairable defects in the OLED display panel, performing repair path planning according to the defect positions, defect sizes, defect types and repair formulations, and according to a coordinate sequence repair mode, a same formulation sequence repair mode and a comprehensive repair mode, obtaining an optimal repair path with the minimum defect repair time, and performing laser repair on the laser-repairable defects in the OLED display panel based on the optimal repair path; the optimal repair path is planned by comprehensively considering various repair sequences and time cost, laser repair is performed on the OLED display panel, and the laser repair efficiency of the display panel is improved.

Description

Technical Field

[0001] This application relates to the technical field of display panel repair, and more specifically, to a laser repair method, apparatus, electronic device, and storage medium for display panels. Background Technology

[0002] With the rapid development of materials, microelectronics, and semiconductor manufacturing and applications, the application of OLED (Organic Light-Emitting Diode) display panels is becoming increasingly widespread. Although manufacturing equipment and processes are constantly improving, the complex processes involved in production inevitably lead to defects in the products, such as short circuits, open circuits, pattern defects like material overflow or missing parts, and pixel defects like bright spots, flashes, broken bright spots, and dark spots. These defects affect the display effect and reduce product yield. Furthermore, in recent years, display panel sizes have become increasingly larger. Compared to discarding defective substrates generated during manufacturing, repairing these defective substrates has become relatively inexpensive. Therefore, using lasers to repair defective panels is a common panel repair method.

[0003] Laser repair technology utilizes high-energy short-pulse lasers to irradiate defective materials, enabling repair operations such as cutting, welding, and covering. Different defect types typically require different wavelengths of laser light with varying spot sizes and energies to be applied to the surface or interior of the display panel for repair. In the OLED display panel production process, multiple defect detection steps are performed. Existing laser repair equipment, after detecting a defect, determines whether it can be repaired with laser. For laser-repairable defects, manual repair is performed according to a repair formula. The repair formula usually includes parameters such as laser wavelength, frequency, frequency division, and power ratio. For different types of defects, switching the laser wavelength and power ratio does not require turning off the laser and can be done directly, requiring less waiting time. However, switching parameters such as frequency and frequency division requires turning off the laser for conversion. Repair work can only proceed after the conversion is complete and the light output is stable, resulting in a longer switching time. In recent years, OLED display panel sizes have increased, and the location of defects has become more random. Manual repair methods, which typically repair defects sequentially based on their location, require frequent switching of repair formulas, reducing repair efficiency.

[0004] Therefore, in order to solve the technical problem of low repair efficiency caused by frequent changes in repair formula in existing display panel laser repair methods, there is an urgent need for a display panel laser repair method, device, electronic equipment and storage medium. Summary of the Invention

[0005] The purpose of this application is to provide a laser repair method, apparatus, electronic device, and storage medium for display panels. By comprehensively considering the defect location, defect size, defect type, and repair formula, and combining multiple repair sequence planning methods, the optimal repair path is generated with the goal of minimizing defect repair time. This method is used to perform laser repair on OLED display panels, solving the problem of low repair efficiency caused by frequent switching of repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, the number of formula switching times during the repair process is minimized, thereby improving the laser repair efficiency of display panels.

[0006] In a first aspect, this application provides a laser repair method for display panels, comprising the following steps:

[0007] Obtain a panel image of the OLED display panel;

[0008] Defect detection is performed on the panel image to obtain the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel;

[0009] Based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time.

[0010] Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel.

[0011] The laser repair method for display panels provided in this application can perform laser repair on display panels. By comprehensively considering the defect location, defect size, defect type, and repair formula, and combining multiple repair sequence planning methods, the optimal repair path is generated with the goal of minimizing defect repair time. This method can perform laser repair on OLED display panels, solving the problem of low repair efficiency caused by frequent switching of repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, the number of formula switching times during the repair process is minimized, thereby improving the laser repair efficiency of display panels.

[0012] Optionally, defect detection is performed on the panel image to obtain the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel, including:

[0013] The MLA defect detection method and appearance defect detection method based on automatic optical inspection technology detect the location, size and type of laser-repairable defects in the panel image;

[0014] The repair formula corresponding to the defect type is extracted from the preset database to obtain the corresponding repair formula for laser-repairable defects.

[0015] The laser repair method for display panels provided in this application can perform laser repair on display panels. Through automatic optical inspection technology, it can accurately identify the location, size and type of defects and automatically match the repair formula, thereby improving the accuracy of defect detection and the efficiency of obtaining the repair formula.

[0016] Optionally, based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including:

[0017] Based on the defect location, defect size, defect type, and repair formula, the repair operation time corresponding to each laser-repairable defect, the formula switching time between each repair formula, and the movement time between each laser-repairable defect are determined.

[0018] Based on the defect location, defect type, and repair formula, and considering the repair operation time, formula switching time, and movement time, a repair path is planned according to three methods: coordinate order repair, same formula order repair, and comprehensive repair, to obtain the optimal repair path with the shortest repair time. Specifically, the coordinate order repair method sorts laser-repairable defects according to their physical coordinates on the OLED display panel; the same formula order repair method groups laser-repairable defects with the same repair formula, sorts each group, and further sorts the laser-repairable defects within each group; and the comprehensive repair method combines the characteristics of both coordinate order and same formula order to sort the laser-repairable defects.

[0019] The laser repair method for display panels provided in this application can perform laser repair on display panels. By comprehensively considering repair operation time, formula switching time, and movement time, and combining multiple repair methods for multi-dimensional path planning, the optimal repair path can be calculated more accurately, thereby further improving repair efficiency.

[0020] Optionally, based on the defect location, the defect type, and the repair formula, and in conjunction with the repair operation time, the formula switching time, and the movement time, a repair path is planned according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including:

[0021] According to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, the repair order of each laser-repairable defect is sorted according to the defect location, the defect type, and the repair formula to obtain a set of defect repair paths;

[0022] Based on the movement time, the repair operation time, and the recipe switching time, the defect repair time for each defect repair path in the defect repair path set is calculated.

[0023] The minimum value is extracted from the defect repair time, and the defect repair path corresponding to the minimum value is determined as the optimal repair path.

[0024] Optionally, according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, the repair order of each laser-repairable defect is sorted according to the defect location, the defect type, and the repair formula to obtain a set of defect repair paths, including:

[0025] According to the coordinate order repair method, based on the defect location, the defect type and the repair formula, the repair order of each laser-repairable defect is sorted to obtain the coordinate order repair path;

[0026] Following the same formula order repair method, based on the defect location, the defect type, and the repair formula, the repair order of each laser-repairable defect is sorted to obtain the same formula order repair path;

[0027] According to the comprehensive repair method, based on the defect location, the defect type and the repair formula, the repair order of each laser-repairable defect is sorted to obtain at least one comprehensive repair path;

[0028] By summarizing the coordinate order repair paths, the same formula order repair paths, and the comprehensive repair paths, a defect repair path set is obtained.

[0029] Optionally, based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel, including:

[0030] Based on the optimal repair path, the laser-repairable defects in the OLED display panel are initially repaired by laser to obtain the OLED display panel after initial laser repair.

[0031] Defect detection is performed on the OLED display panel after the initial laser repair to determine whether the laser repair is complete.

[0032] Optionally, defect detection is performed on the OLED display panel after the initial laser repair to determine whether the laser repair is complete, including:

[0033] Determine whether there are laser-repairable defects in the OLED display panel after the initial laser repair;

[0034] If not, then the laser repair is complete;

[0035] If so, the laser repair is deemed unqualified. An optimal repair path is then planned for the laser-repairable defects in the OLED display panel after the initial laser repair, in order to perform laser repair on the laser-repairable defects in the OLED display panel after the initial laser repair, until there are no laser-repairable defects in the OLED display panel after laser repair.

[0036] Secondly, this application provides a display panel laser repair device for laser repair of display panels, comprising:

[0037] The acquisition module is used to acquire panel images of the OLED display panel;

[0038] The detection module is used to perform defect detection on the panel image to obtain the location, size, type and repair formula of all laser-repairable defects in the OLED display panel;

[0039] The planning module is used to plan the repair path based on the defect location, the defect size, the defect type and the repair formula, according to the coordinate order repair method, the same formula order repair method and the comprehensive repair method, to obtain the optimal repair path with the minimum defect repair time.

[0040] The repair module is used to perform laser repair on laser-repairable defects in the OLED display panel based on the optimal repair path.

[0041] This display panel laser repair device comprehensively considers the defect location, size, type, and repair formula, and combines multiple repair sequence planning methods to generate an optimal repair path with the goal of minimizing defect repair time. This addresses the problem of low repair efficiency caused by frequent changes in repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, it minimizes the number of formula changes during the repair process, thereby improving the laser repair efficiency of display panels.

[0042] Thirdly, this application provides an electronic device, including a processor and a memory, wherein the memory stores a computer program executable by the processor, and when the processor executes the computer program, it performs the steps in the laser repair method for display panels described above.

[0043] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the display panel laser repair method described above. Beneficial effects

[0044] The display panel laser repair method, apparatus, electronic device, and storage medium provided in this application comprehensively consider the defect location, defect size, defect type, and repair formula, and combine multiple repair sequence planning methods to generate an optimal repair path with the goal of minimizing defect repair time. This addresses the problem of low repair efficiency caused by frequent switching of repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, the number of formula switching times during the repair process is minimized, thereby improving the laser repair efficiency of display panels. Attached Figure Description

[0045] Figure 1 A flowchart of a laser repair method for a display panel provided in an embodiment of this application.

[0046] Figure 2 This is a schematic diagram of the structure of the display panel laser repair device provided in the embodiments of this application.

[0047] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0048] Labeling Explanation: 1. Acquisition Module; 2. Detection Module; 3. Planning Module; 4. Repair Module; 301. Processor; 302. Memory; 303. Communication Bus. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Please refer to Figure 1 , Figure 1 This application discloses a laser repair method for display panels, which is used to perform laser repair on display panels, including:

[0052] Step S101: Obtain a panel image of the OLED display panel;

[0053] Step S102: Perform defect detection on the panel image to obtain the location, size, type and repair formula of all laser-repairable defects in the OLED display panel;

[0054] Step S103: Based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method to obtain the optimal repair path with the minimum defect repair time.

[0055] Step S104: Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel.

[0056] This laser repair method for display panels comprehensively considers defect location, size, type, and repair formula, and combines multiple repair sequence planning methods to generate an optimal repair path with the goal of minimizing defect repair time. This method addresses the problem of low repair efficiency caused by frequent changes in repair formula in existing laser repair methods for display panels. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, it minimizes the number of formula changes during the repair process, thereby improving the laser repair efficiency of display panels.

[0057] Specifically, in step S101, a panel image of the OLED display panel is acquired. This acquisition can be achieved in various ways. For example, a high-resolution camera can be used to photograph the OLED display panel, generating a digital image file. Alternatively, a scanning device can scan the panel line by line, converting optical signals into electrical signals to form a panel image. Furthermore, the inspected panel image data can be directly acquired from the AOI equipment by connecting to a data interface with the automated optical inspection (AOI) equipment on the production line. All these methods provide raw image information for subsequent defect detection.

[0058] Specifically, in step S102, defect detection is performed on the panel image to obtain the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel, including:

[0059] Based on the automatic optical inspection technology, the MLA defect detection method and the appearance defect detection method detect the location, size and type of laser-repairable defects in the panel image;

[0060] The repair formula corresponding to the defect type is extracted from the preset database to obtain the corresponding repair formula for laser-repairable defects.

[0061] In step S102, the OLED display panel undergoes a complex manufacturing process, inevitably resulting in laser-repairable defects such as short circuits, open circuits, pattern defects like material overflow or loss, and pixel defects like bright spots, flashes, broken bright spots, and dark spots. The types and locations of these defects exhibit a degree of randomness. Therefore, by introducing existing Automated Optical Inspection (AOI) technology and combining it with Mura defect detection and appearance defect detection methods, automated and high-precision identification of various laser-repairable defects on the OLED display panel can be achieved. Specifically, AOI technology can quickly scan the entire OLED display panel, capturing high-resolution images. These images are then analyzed using Mura and appearance defect detection methods to accurately locate defects and identify their size and type. Subsequently, by extracting repair formulas corresponding to the defect types from a pre-set database, the most suitable laser repair parameters, including laser wavelength, frequency, frequency division, and power ratio, can be applied to each defect. This mechanism ensures comprehensive defect detection and accurate acquisition of repair formulas, providing reliable basic data for subsequent laser repair. Among them, automatic optical inspection technology, MLA defect detection method and appearance defect detection method are existing technologies, and will not be described in detail here.

[0062] Specifically, in step S103, based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including:

[0063] Based on the defect location, defect size, defect type, and repair formula, the repair operation time for each laser-repairable defect, the formula switching time between each repair formula, and the movement time between each laser-repairable defect are determined.

[0064] Based on the defect location, defect type, and repair formula, and considering the repair operation time, formula switching time, and movement time, repair path planning is performed according to three methods: coordinate order repair, same formula order repair, and comprehensive repair. The optimal repair path with the shortest repair time is obtained. Specifically, the coordinate order repair method sorts laser-repairable defects according to their physical coordinates on the OLED display panel; the same formula order repair method groups laser-repairable defects with the same repair formula, sorts each group, and further sorts the laser-repairable defects within each group; and the comprehensive repair method combines the characteristics of both coordinate order and same formula order to sort the laser-repairable defects.

[0065] In step S103, the repair operation time refers to the actual time required for the laser repair equipment to repair each laser-repairable defect. It is closely related to the defect size (i.e., defect size), repair energy, and number of repairs, that is, it is related to the defect size and repair formula. Specifically, it can be determined through prior experimental data or simulation.

[0066] Formula changeover time refers to the additional time spent by the laser repair equipment during parameter adjustments and calibration when switching from one repair formula to another. It is related to the defect type and the repair formula and can be obtained by calibrating the performance parameters of the laser repair equipment, combining statistical data from actual repair operations, or through simulation. This formula changeover time aims to quantify the preparation time required for repairing different types of defects. Its purpose is to balance the relationship between continuously repairing the same type of defect to avoid changeover time and repairing different types of defects to optimize spatial order during path planning. Specifically, if a change in laser wavelength or power ratio is required, the laser does not need to be turned off, and the changeover time is short; the specific changeover time can be calibrated using the performance parameters of the laser repair equipment. If a change in frequency or frequency division is required, the laser needs to be turned off, requiring a longer time; the specific changeover time can also be calibrated using the performance parameters of the laser repair equipment.

[0067] The movement time specifically refers to the time required for the laser repair head or stage to move from one location on the OLED display panel that can be laser-repaired to another. This time can be obtained by calibrating the performance parameters of the laser repair equipment, combining statistical data from actual repair operations, or through simulation. This movement time primarily depends on the spatial distance between the two defects and the moving speed of the laser repair equipment. Its purpose is to take into account the time spent on the laser head's idle movement on the panel during path planning, thereby avoiding unnecessary long-distance movements.

[0068] In step S103, the repair operation time for each laser-repairable defect is determined based on the defect size and repair formula. The formula switching time between different repair formulas is determined based on the defect type and repair formula. The movement time between laser-repairable defects is determined based on the defect location. The repair operation time ensures that the actual repair time for each defect is accurately calculated. The formula switching time encourages the system to prioritize processing defects with the same repair formula consecutively when possible, reducing unnecessary switching overhead. The movement time guides the system to prioritize processing spatially adjacent defects, shortening the idle movement distance of the laser head. It is precisely through the quantification and integration of these specific time costs that the planned repair path can truly minimize the defect repair time.

[0069] Specifically, in step S103, based on the defect location, defect type, and repair formula, and considering the repair operation time, formula switching time, and movement time, a repair path is planned according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including:

[0070] Based on the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, the repair order of each laser-repairable defect is sorted according to the defect location, defect type, and repair formula to obtain a set of defect repair paths.

[0071] Based on the movement time, repair operation time, and recipe switching time, the defect repair time for each defect repair path in the defect repair path set is calculated.

[0072] The minimum value is extracted from the defect repair time, and the defect repair path corresponding to the minimum value is determined as the optimal repair path.

[0073] Specifically, in step S103, the repair order of each laser-repairable defect is sorted according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, based on the defect location, defect type, and repair formula, to obtain a set of defect repair paths, including:

[0074] According to the coordinate order repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain the coordinate order repair path;

[0075] Following the same formula order repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain the same formula order repair path;

[0076] According to the comprehensive repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain at least one comprehensive repair path;

[0077] By summarizing the coordinate order repair paths, the same formula order repair paths, and the comprehensive repair paths, a set of defect repair paths is obtained.

[0078] In step S103, the coordinate sequence repair method refers to sorting the laser-repairable defects according to their physical coordinate positions on the OLED display panel, such as the X-axis and Y-axis coordinates. Typically, these defects can be arranged according to a preset scanning order, such as left to right, top to bottom, bottom to top, or right to left, thereby generating one or more coordinate sequence repair paths. The purpose is to ensure that the movement path of the laser repair head on the panel is as continuous and orderly as possible, reducing unnecessary long-distance movements.

[0079] The same formula sequential repair method involves grouping laser-repairable defects with the same repair formula into groups, sorting each group, and further sorting the laser-repairable defects within each group. For example, all defects requiring formula A can be repaired first, followed by all defects requiring formula B. Within each formula group, further sorting can be achieved using coordinate order or other optimization strategies. The aim is to minimize the additional time consumed by formula switching during laser repair, thereby improving repair efficiency.

[0080] A comprehensive repair approach combines the advantages of coordinate order and the order of identical formulas. For example, in areas with high defect density, defects with the same formula can be repaired first according to coordinate order, followed by defects with different formulas. In areas with low defect density, defects can be repaired according to coordinate order, minimizing the number of formula changes and travel distance. Alternatively, other optimization factors (such as defect density and defect severity) can be introduced for sorting. For instance, optimization algorithms such as genetic algorithms and simulated annealing can be used to generate one or more comprehensive repair paths based on factors such as defect location, defect type, and repair formula. The goal is to find a better repair path under various constraints to further shorten the overall repair time.

[0081] In step S103, by generating coordinate-sequence repair paths, identical-formula-sequence repair paths, and comprehensive repair paths, and summarizing them into a defect repair path set, a more comprehensive and richer set of candidate solutions can be provided for subsequent optimal path selection. This helps to more effectively explore and discover the optimal repair path with the shortest defect repair time when considering multiple factors such as laser head movement time, repair operation time, and formula switching time, thereby significantly improving the overall efficiency and quality of laser repair of display panels.

[0082] In step S103, for each path in the defect repair path set, the total repair time is calculated cumulatively based on the repair order of each defect within that path. Specifically, this includes the movement time required for the laser head to move from one defect to the next, the repair operation time required to perform laser repair on each defect, and the formula switching time caused by changes in the repair formula during the repair process. By accurately calculating the total time for each path, a quantitative basis can be provided for comparing different paths.

[0083] After calculating the total repair time for all paths in the defect repair path set, these time values ​​are compared to find the minimum time value. The repair path corresponding to this minimum time value is determined as the optimal repair path. The purpose is to ensure that the selected repair path has the highest efficiency among all considered paths, thereby minimizing the total laser repair time of the display panel.

[0084] For example, suppose an OLED display panel has multiple laser-repairable defects located in different positions, each requiring a different repair formula. First, based on the defect location information, a coordinate-sequential repair path is generated, for example, repairing all defects sequentially from left to right and top to bottom. Simultaneously, based on the required repair formulas, a path with the same formula sequence is generated; for example, repairing all defects requiring formula A first, then all defects requiring formula B, and so on. Furthermore, a comprehensive repair algorithm can be used, for example, combining defect distance and formula switching costs to generate one or more comprehensive repair paths. These paths collectively constitute a defect repair path set. Next, for each path in the defect repair path set, the total defect repair time is calculated based on predetermined travel time, repair operation time, and formula switching time. For example, if a path includes three formula switches and ten defect repairs, and the total travel distance is X, then its total repair time will be the sum of all travel times, repair operation times, and formula switching times. Finally, all calculated total defect repair times are compared, and the minimum time value is found. The repair path corresponding to this minimum time value is determined as the final optimal repair path and used to guide subsequent laser repair operations.

[0085] Specifically, in step S104, based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel, including:

[0086] Based on the optimal repair path, preliminary laser repair is performed on the laser-repairable defects in the OLED display panel to obtain the OLED display panel after preliminary laser repair.

[0087] Defect detection is performed on the OLED display panel after preliminary laser repair to determine whether the laser repair is complete.

[0088] In step S104, laser repair is performed on the laser-repairable defects detected on the OLED display panel according to the pre-planned optimal repair path, resulting in a preliminarily laser-repaired OLED display panel.

[0089] After the initial laser repair is completed, a comprehensive defect inspection is performed on the repaired OLED display panel. The purpose of this inspection is to evaluate the effectiveness of the initial repair, determine whether any residual defects exist, or whether the expected repair standards have been met. This inspection obtains an image of the repaired panel, and based on this image, the defect situation is analyzed to determine whether the laser repair process can be terminated or whether further repair operations are needed.

[0090] Specifically, in step S104, defect detection is performed on the OLED display panel after preliminary laser repair to determine whether the laser repair is complete, including:

[0091] Determine whether there are laser-repairable defects in the OLED display panel after preliminary laser repair;

[0092] If not, then the laser repair is complete;

[0093] If so, the laser repair is deemed unqualified. An optimal repair path is then planned for the laser-repairable defects in the OLED display panel after the initial laser repair. This path is used to perform laser repair on the laser-repairable defects in the OLED display panel after the initial laser repair until there are no laser-repairable defects in the OLED display panel after the laser repair.

[0094] In step S104, after the initial laser repair is completed, the repair is not immediately considered finished; instead, a defect detection is performed again. This detection step accurately identifies any laser-repairable defects that remain after the initial repair. If the detection result shows no laser-repairable defects, the laser repair is considered complete, indicating that the current display panel has met the expected repair standards and can proceed to the subsequent production process. Conversely, if the detection result shows that defects still exist, these residual defects are used as new repair targets, and the optimal repair path is re-planned (this planning process is the same as the repair path planning described above, aiming to recalculate the optimal repair path with the shortest defect repair time for the remaining defects on the current panel), and laser repair is performed again. This closed-loop feedback mechanism ensures continuous optimization of the repair process until all laser-repairable defects on the display panel are eliminated. It is precisely because of this continuous cycle of detection, planning, and repair that the laser repair of the display panel can achieve a higher pass rate and a more thorough repair effect.

[0095] As shown above, this laser repair method for display panels acquires images of the OLED display panel, performs defect detection on the panel images, and obtains the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel. Based on the defect location, size, type, and repair formula, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time. Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel. Thus, by comprehensively considering the defect location, size, type, and repair formula, and combining multiple repair order planning methods, the optimal repair path is generated with the goal of minimizing defect repair time, and the OLED display panel is laser-repaired. This solves the problem of low repair efficiency caused by frequent switching of repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair orders and time costs to plan the optimal repair path, the number of formula switching times during the repair process is minimized, thereby improving the laser repair efficiency of the display panel.

[0096] refer to Figure 2 This application provides a display panel laser repair device for laser repair of display panels, comprising:

[0097] Acquisition module 1 is used to acquire panel images of the OLED display panel;

[0098] Detection module 2 is used to perform defect detection on the panel image to obtain the location, size, type and repair formula of all laser-repairable defects in the OLED display panel;

[0099] Planning module 3 is used to plan repair paths based on defect location, defect size, defect type, and repair formula, according to coordinate order repair method, same formula order repair method, and comprehensive repair method, to obtain the optimal repair path with the minimum defect repair time.

[0100] Repair module 4 is used to perform laser repair on laser-repairable defects in the OLED display panel based on the optimal repair path.

[0101] This display panel laser repair device comprehensively considers the defect location, size, type, and repair formula, and combines multiple repair sequence planning methods to generate an optimal repair path with the goal of minimizing defect repair time. This addresses the problem of low repair efficiency caused by frequent changes in repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair sequences and time costs to plan the optimal repair path, it minimizes the number of formula changes during the repair process, thereby improving the laser repair efficiency of display panels.

[0102] Specifically, when module 1 is executed, it acquires a panel image of the OLED display panel. This acquisition can be achieved in various ways. For example, a high-resolution camera can be used to photograph the OLED display panel, generating a digital image file. Alternatively, a scanning device can scan the panel line by line, converting optical signals into electrical signals to form a panel image. Furthermore, it can connect to an automated optical inspection (AOI) device on the production line via a data interface to directly acquire the inspected panel image data from the AOI device. All these methods provide raw image information for subsequent defect detection.

[0103] Specifically, when the detection module 2 performs defect detection on the panel image and obtains the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel, it executes the following:

[0104] Based on the automatic optical inspection technology, the MLA defect detection method and the appearance defect detection method detect the location, size and type of laser-repairable defects in the panel image;

[0105] The repair formula corresponding to the defect type is extracted from the preset database to obtain the corresponding repair formula for laser-repairable defects.

[0106] During the execution of the detection module 2, the complex manufacturing process of OLED display panels inevitably results in laser-repairable defects, such as circuit defects like short circuits and open circuits, pattern defects like material overflow or missing parts, and pixel defects like bright spots, flashes, broken bright spots, and dark spots. The types and locations of these defects exhibit a degree of randomness. Therefore, by introducing existing Automated Optical Inspection (AOI) technology and combining it with Mura defect detection and appearance defect detection methods, automated and high-precision identification of various laser-repairable defects on OLED display panels can be achieved. Specifically, AOI technology can quickly scan the entire OLED display panel, capturing high-resolution images. These images are then analyzed using Mura and appearance defect detection methods to accurately locate defects and identify their size and type. Subsequently, by extracting repair formulas corresponding to the defect type from a pre-set database, the most suitable laser repair parameters, including laser wavelength, frequency, frequency division, and power ratio, can be applied to each defect. This mechanism ensures comprehensive defect detection and accurate acquisition of repair formulas, providing reliable basic data for subsequent laser repair. Among them, automatic optical inspection technology, MLA defect detection method and appearance defect detection method are existing technologies, and will not be described in detail here.

[0107] Specifically, when planning module 3 obtains the optimal repair path with the shortest repair time based on the defect location, defect size, defect type, and repair formula, according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, it executes:

[0108] Based on the defect location, defect size, defect type, and repair formula, the repair operation time for each laser-repairable defect, the formula switching time between each repair formula, and the movement time between each laser-repairable defect are determined.

[0109] Based on the defect location, defect type, and repair formula, and considering the repair operation time, formula switching time, and movement time, repair path planning is performed according to three methods: coordinate order repair, same formula order repair, and comprehensive repair. The optimal repair path with the shortest repair time is obtained. Specifically, the coordinate order repair method sorts laser-repairable defects according to their physical coordinates on the OLED display panel; the same formula order repair method groups laser-repairable defects with the same repair formula, sorts each group, and further sorts the laser-repairable defects within each group; and the comprehensive repair method combines the characteristics of both coordinate order and same formula order to sort the laser-repairable defects.

[0110] When the planning module 3 is executed, the repair operation time refers to the actual time required for the laser repair equipment to repair each laser-repairable defect. It is closely related to the defect size (i.e., defect size), repair energy, and number of repairs, that is, it is related to the defect size and repair formula. Specifically, it can be determined through prior experimental data or simulation.

[0111] Formula changeover time refers to the additional time spent by the laser repair equipment during parameter adjustments and calibration when switching from one repair formula to another. It is related to the defect type and the repair formula and can be obtained by calibrating the performance parameters of the laser repair equipment, combining statistical data from actual repair operations, or through simulation. This formula changeover time aims to quantify the preparation time required for repairing different types of defects. Its purpose is to balance the relationship between continuously repairing the same type of defect to avoid changeover time and repairing different types of defects to optimize spatial order during path planning. Specifically, if a change in laser wavelength or power ratio is required, the laser does not need to be turned off, and the changeover time is short; the specific changeover time can be calibrated using the performance parameters of the laser repair equipment. If a change in frequency or frequency division is required, the laser needs to be turned off, requiring a longer time; the specific changeover time can also be calibrated using the performance parameters of the laser repair equipment.

[0112] The movement time specifically refers to the time required for the laser repair head or stage to move from one location on the OLED display panel that can be laser-repaired to another. This time can be obtained by calibrating the performance parameters of the laser repair equipment, combining statistical data from actual repair operations, or through simulation. This movement time primarily depends on the spatial distance between the two defects and the moving speed of the laser repair equipment. Its purpose is to take into account the time spent on the laser head's idle movement on the panel during path planning, thereby avoiding unnecessary long-distance movements.

[0113] During execution, planning module 3 determines the repair operation time for each laser-repairable defect based on its size and repair formula, the formula switching time between different repair formulas based on the defect type and formula, and the movement time between laser-repairable defects based on their location. The repair operation time ensures accurate calculation of the actual repair time for each defect; the formula switching time encourages the system to prioritize processing defects with the same repair formula consecutively whenever possible, reducing unnecessary switching overhead; and the movement time guides the system to prioritize processing spatially adjacent defects, shortening the idle movement distance of the laser head. It is precisely this quantification and integration of these specific time costs that enables the planned repair path to truly minimize defect repair time.

[0114] Specifically, when planning module 3 calculates the optimal repair path with the shortest repair time based on the defect location, defect type, and repair formula, combined with repair operation time, formula switching time, and movement time, and according to coordinate order repair method, same formula order repair method, and comprehensive repair method, it executes the following:

[0115] Based on the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, the repair order of each laser-repairable defect is sorted according to the defect location, defect type, and repair formula to obtain a set of defect repair paths.

[0116] Based on the movement time, repair operation time, and recipe switching time, the defect repair time for each defect repair path in the defect repair path set is calculated.

[0117] The minimum value is extracted from the defect repair time, and the defect repair path corresponding to the minimum value is determined as the optimal repair path.

[0118] Specifically, when planning module 3 sorts the repair order of each laser-repairable defect according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, based on the defect location, defect type, and repair formula, and obtains the defect repair path set, it executes:

[0119] According to the coordinate order repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain the coordinate order repair path;

[0120] Following the same formula order repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain the same formula order repair path;

[0121] According to the comprehensive repair method, based on the defect location, defect type and repair formula, the repair order of each laser-repairable defect is sorted to obtain at least one comprehensive repair path;

[0122] By summarizing the coordinate order repair paths, the same formula order repair paths, and the comprehensive repair paths, a set of defect repair paths is obtained.

[0123] When planning module 3 is executed, the coordinate sequence repair method refers to sorting the laser-repairable defects according to their physical coordinate positions on the OLED display panel, such as the X-axis and Y-axis coordinates. Typically, these defects can be arranged according to preset scanning sequences such as left to right, top to bottom, bottom to top, or right to left, thereby generating one or more coordinate sequence repair paths. The purpose is to ensure that the movement path of the laser repair head on the panel is as continuous and orderly as possible, reducing unnecessary long-distance movements.

[0124] The same formula sequential repair method involves grouping laser-repairable defects with the same repair formula into groups, sorting each group, and further sorting the laser-repairable defects within each group. For example, all defects requiring formula A can be repaired first, followed by all defects requiring formula B. Within each formula group, further sorting can be achieved using coordinate order or other optimization strategies. The aim is to minimize the additional time consumed by formula switching during laser repair, thereby improving repair efficiency.

[0125] A comprehensive repair approach combines the advantages of coordinate order and the order of identical formulas. For example, in areas with high defect density, defects with the same formula can be repaired first according to coordinate order, followed by defects with different formulas. In areas with low defect density, defects can be repaired according to coordinate order, minimizing the number of formula changes and travel distance. Alternatively, other optimization factors (such as defect density and defect severity) can be introduced for sorting. For instance, optimization algorithms such as genetic algorithms and simulated annealing can be used to generate one or more comprehensive repair paths based on factors such as defect location, defect type, and repair formula. The goal is to find a better repair path under various constraints to further shorten the overall repair time.

[0126] During execution, the planning module 3 generates repair paths in coordinate order, repair paths in the same formula order, and comprehensive repair paths, and aggregates them into a defect repair path set. This provides a more comprehensive and abundant set of candidate solutions for subsequent optimal path selection. This helps to more effectively explore and discover the optimal repair path with the shortest defect repair time when considering various factors such as laser head movement time, repair operation time, and formula switching time, thereby significantly improving the overall efficiency and quality of laser repair of display panels.

[0127] During execution, the planning module 3 calculates the total repair time for each path in the defect repair path set, based on the repair order of each defect within that path. Specifically, this includes the movement time required for the laser head to move from one defect to the next, the repair operation time required to perform laser repair on each defect, and the formula switching time caused by changes in the repair formula during the repair process. By accurately calculating the total time for each path, a quantitative basis can be provided for comparing different paths.

[0128] After calculating the total repair time for all paths in the defect repair path set, these time values ​​are compared to find the minimum time value. The repair path corresponding to this minimum time value is determined as the optimal repair path. The purpose is to ensure that the selected repair path has the highest efficiency among all considered paths, thereby minimizing the total laser repair time of the display panel.

[0129] For example, suppose an OLED display panel has multiple laser-repairable defects located in different positions, each requiring a different repair formula. First, based on the defect location information, a coordinate-sequential repair path is generated, for example, repairing all defects sequentially from left to right and top to bottom. Simultaneously, based on the required repair formulas, a path with the same formula sequence is generated; for example, repairing all defects requiring formula A first, then all defects requiring formula B, and so on. Furthermore, a comprehensive repair algorithm can be used, for example, combining defect distance and formula switching costs to generate one or more comprehensive repair paths. These paths collectively constitute a defect repair path set. Next, for each path in the defect repair path set, the total defect repair time is calculated based on predetermined travel time, repair operation time, and formula switching time. For example, if a path includes three formula switches and ten defect repairs, and the total travel distance is X, then its total repair time will be the sum of all travel times, repair operation times, and formula switching times. Finally, all calculated total defect repair times are compared, and the minimum time value is found. The repair path corresponding to this minimum time value is determined as the final optimal repair path and used to guide subsequent laser repair operations.

[0130] Specifically, when repair module 4 performs laser repair on laser-repairable defects in the OLED display panel based on the optimal repair path, it executes the following:

[0131] Based on the optimal repair path, preliminary laser repair is performed on the laser-repairable defects in the OLED display panel to obtain the OLED display panel after preliminary laser repair.

[0132] Defect detection is performed on the OLED display panel after preliminary laser repair to determine whether the laser repair is complete.

[0133] When the repair module 4 is executed, it performs laser repair on the laser-repairable defects detected on the OLED display panel according to the pre-planned optimal repair path, and obtains the OLED display panel after preliminary laser repair.

[0134] After the initial laser repair is completed, a comprehensive defect inspection is performed on the repaired OLED display panel. The purpose of this inspection is to evaluate the effectiveness of the initial repair, determine whether any residual defects exist, or whether the expected repair standards have been met. This inspection obtains an image of the repaired panel, and based on this image, the defect situation is analyzed to determine whether the laser repair process can be terminated or whether further repair operations are needed.

[0135] Specifically, when repair module 4 performs defect detection on the OLED display panel after preliminary laser repair to determine whether the laser repair is complete, it executes the following:

[0136] Determine whether there are laser-repairable defects in the OLED display panel after preliminary laser repair;

[0137] If not, then the laser repair is complete;

[0138] If so, the laser repair is deemed unqualified. An optimal repair path is then planned for the laser-repairable defects in the OLED display panel after the initial laser repair. This path is used to perform laser repair on the laser-repairable defects in the OLED display panel after the initial laser repair until there are no laser-repairable defects in the OLED display panel after the laser repair.

[0139] During the execution of repair module 4, after the initial laser repair is completed, the repair is not immediately considered finished. Instead, a defect detection is performed again. This detection step can accurately identify any laser-repairable defects that still exist after the initial repair. If the detection result shows that there are no laser-repairable defects, the laser repair can be considered complete, indicating that the current display panel has met the expected repair standards and can proceed to the subsequent production process. Conversely, if the detection result shows that there are still defects, these residual defects are used as new repair targets, and the optimal repair path is re-planned (this planning process is the same as the repair path planning mentioned above, aiming to recalculate the optimal repair path with the shortest defect repair time for the remaining defects on the current panel), and laser repair is performed again. This closed-loop feedback mechanism ensures continuous optimization of the repair process until all laser-repairable defects on the display panel are eliminated. It is precisely because of this continuous cycle of detection, planning, and repair that the laser repair of the display panel can achieve a higher pass rate and a more thorough repair effect.

[0140] As shown above, this display panel laser repair device acquires an image of the OLED display panel, performs defect detection on the image, and obtains the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel. Based on the defect location, size, type, and repair formula, it plans a repair path according to coordinate order repair, same formula order repair, and comprehensive repair methods to obtain the optimal repair path with the shortest repair time. Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel. Thus, by comprehensively considering the defect location, size, type, and repair formula, and combining multiple repair order planning methods, the device generates an optimal repair path with the goal of minimizing defect repair time, thereby performing laser repair on the OLED display panel. This solves the problem of low repair efficiency caused by frequent switching of repair formulas in existing display panel laser repair methods. By comprehensively considering multiple repair orders and time costs to plan the optimal repair path, the device minimizes the number of formula switching during the repair process, thus improving the laser repair efficiency of the display panel.

[0141] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device includes a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other via a communication bus 303 and / or other connection mechanisms (not shown). The memory 302 stores a computer program executable by the processor 301. When the electronic device is running, the processor 301 executes the computer program to perform a display panel laser repair method in any optional implementation of the above embodiments, to achieve the following functions: acquiring a panel image of an OLED display panel; performing defect detection on the panel image to obtain the defect location, defect size, defect type, and repair formula of all laser-repairable defects in the OLED display panel; based on the defect location, defect size, defect type, and repair formula, performing repair path planning according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the shortest defect repair time; and performing laser repair on the laser-repairable defects in the OLED display panel based on the optimal repair path.

[0142] This application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it executes the display panel laser repair method in any optional implementation of the above embodiments to achieve the following functions: acquiring a panel image of an OLED display panel; performing defect detection on the panel image to obtain the defect location, defect size, defect type, and repair formula of all laser-repairable defects in the OLED display panel; based on the defect location, defect size, defect type, and repair formula, performing repair path planning according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time; and performing laser repair on the laser-repairable defects in the OLED display panel based on the optimal repair path. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0143] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0144] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0145] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0146] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0147] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for laser repair of a display panel, used for laser repair of a display panel, characterized in that, Including the following steps: Obtain a panel image of the OLED display panel; Defect detection is performed on the panel image to obtain the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel; Based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method to obtain the optimal repair path with the minimum defect repair time. Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel; Based on the defect location, defect size, defect type, and repair formula, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including: Based on the defect location, defect size, defect type, and repair formula, the repair operation time corresponding to each laser-repairable defect, the formula switching time between each repair formula, and the movement time between each laser-repairable defect are determined. Based on the defect location, defect type, and repair formula, combined with the repair operation time, formula switching time, and movement time, a repair path is planned according to three methods: coordinate order repair, same formula order repair, and comprehensive repair, to obtain the optimal repair path with the shortest defect repair time. Specifically, the coordinate order repair method sorts laser-repairable defects according to their physical coordinate positions on the OLED display panel; the same formula order repair method groups laser-repairable defects with the same repair formula, sorts each group, and further sorts the laser-repairable defects within each group; the comprehensive repair method combines the characteristics of coordinate order and same formula order. In areas with high defect density, defects with the same formula are repaired first according to coordinate order, then defects with different formulas are repaired according to coordinate order. In areas with low defect density, defects are repaired according to coordinate order, minimizing both the number of formula switching operations and the movement distance to sort laser-repairable defects.

2. The laser repair method for display panels according to claim 1, characterized in that, Defect detection is performed on the panel image to obtain the location, size, type, and repair formula of all laser-repairable defects in the OLED display panel, including: The MLA defect detection method and appearance defect detection method based on automatic optical inspection technology detect the location, size and type of laser-repairable defects in the panel image; The repair formula corresponding to the defect type is extracted from the preset database to obtain the corresponding repair formula for laser-repairable defects.

3. The laser repair method for display panels according to claim 1, characterized in that, Based on the defect location, defect type, and repair formula, and considering the repair operation time, formula switching time, and movement time, repair path planning is performed according to coordinate order repair method, same formula order repair method, and comprehensive repair method to obtain the optimal repair path with the minimum defect repair time, including: According to the coordinate order repair method, the same formula order repair method, and the comprehensive repair method, the repair order of each laser-repairable defect is sorted according to the defect location, the defect type, and the repair formula to obtain a set of defect repair paths; Based on the movement time, the repair operation time, and the recipe switching time, the defect repair time for each defect repair path in the defect repair path set is calculated. The minimum value is extracted from the defect repair time, and the defect repair path corresponding to the minimum value is determined as the optimal repair path.

4. The laser repair method for a display panel according to claim 3, characterized in that, Repair paths for laser-repairable defects are ordered according to coordinate order, identical formula order, and comprehensive repair methods, based on the defect location, defect type, and repair formula, resulting in a set of defect repair paths, including: According to the coordinate order repair method, based on the defect location, the defect type and the repair formula, the repair order of each laser-repairable defect is sorted to obtain the coordinate order repair path; Following the same formula order repair method, based on the defect location, the defect type, and the repair formula, the repair order of each laser-repairable defect is sorted to obtain the same formula order repair path; According to the comprehensive repair method, based on the defect location, the defect type and the repair formula, the repair order of each laser-repairable defect is sorted to obtain at least one comprehensive repair path; By summarizing the coordinate order repair paths, the same formula order repair paths, and the comprehensive repair paths, a defect repair path set is obtained.

5. The laser repair method for a display panel according to claim 1, characterized in that, Based on the optimal repair path, laser repair is performed on the laser-repairable defects in the OLED display panel, including: Based on the optimal repair path, the laser-repairable defects in the OLED display panel are initially repaired by laser to obtain the OLED display panel after initial laser repair. Defect detection is performed on the OLED display panel after the initial laser repair to determine whether the laser repair is complete.

6. The laser repair method for a display panel according to claim 5, characterized in that, Defect detection is performed on the OLED display panel after the initial laser repair to determine whether the laser repair is complete, including: Determine whether there are laser-repairable defects in the OLED display panel after the initial laser repair; If not, then the laser repair is complete; If so, the laser repair is deemed unqualified. An optimal repair path is then planned for the laser-repairable defects in the OLED display panel after the initial laser repair, in order to perform laser repair on the laser-repairable defects in the OLED display panel after the initial laser repair, until there are no laser-repairable defects in the OLED display panel after laser repair.

7. A display panel laser repair device for laser repair of display panels, characterized in that, include: The acquisition module is used to acquire panel images of the OLED display panel; The detection module is used to perform defect detection on the panel image to obtain the location, size, type and repair formula of all laser-repairable defects in the OLED display panel; The planning module is used to plan the repair path based on the defect location, the defect size, the defect type and the repair formula, according to the coordinate order repair method, the same formula order repair method and the comprehensive repair method, to obtain the optimal repair path with the minimum defect repair time. The repair module is used to perform laser repair on laser-repairable defects in the OLED display panel based on the optimal repair path. The planning module is used to plan a repair path based on the defect location, defect size, defect type, and repair formula, according to coordinate order repair method, same formula order repair method, and comprehensive repair method, to obtain the optimal repair path with the minimum defect repair time, including: Based on the defect location, defect size, defect type, and repair formula, the repair operation time corresponding to each laser-repairable defect, the formula switching time between each repair formula, and the movement time between each laser-repairable defect are determined. Based on the defect location, defect type, and repair formula, combined with the repair operation time, formula switching time, and movement time, a repair path is planned according to three methods: coordinate order repair, same formula order repair, and comprehensive repair, to obtain the optimal repair path with the shortest defect repair time. Specifically, the coordinate order repair method sorts laser-repairable defects according to their physical coordinate positions on the OLED display panel; the same formula order repair method groups laser-repairable defects with the same repair formula, sorts each group, and further sorts the laser-repairable defects within each group; the comprehensive repair method combines the characteristics of coordinate order and same formula order. In areas with high defect density, defects with the same formula are repaired first according to coordinate order, then defects with different formulas are repaired according to coordinate order. In areas with low defect density, defects are repaired according to coordinate order, minimizing both the number of formula switching operations and the movement distance to sort laser-repairable defects.

8. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a computer program executable by the processor, and when the processor executes the computer program, it performs the steps in the display panel laser repair method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it performs the steps in the display panel laser repair method as described in any one of claims 1-6.

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