Automatic maintenance task dispatching method and system for wafer packaging test equipment

Abstract

The invention discloses an automatic maintenance task dispatching method and system for wafer packaging test equipment. The method comprises the following steps: providing a plurality of workflows corresponding to different maintenance items; obtaining a current maintenance project, and establishing a work task according to a corresponding workflow; generating subtasks at the corresponding working sites; and according to a preset sequence, when the subtask of the previous working site is confirmed to be completed or passes verification, the subtask of the adjacent next working site can be executed. According to the invention, the site sequence is determined directly according to the current maintenance item based on the work flow corresponding to the pre-formulated maintenance item, so that the site corresponding to each maintenance item is determined, and the staff of each site only needs to work and confirm according to the subtask given in the system; information does not need to be transmitted among the stations frequently, the problems of high management cost and confusion caused by manual notification and dispatching management are avoided, and the management efficiency of a production enterprise is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of wafer packaging and testing technology, and in particular to a method and system for automatically dispatching maintenance tasks for wafer packaging and testing equipment. Background Technology

[0002] In the wafer packaging and testing production process, continuous maintenance of wafer packaging and testing equipment is required, including but not limited to replacing consumables and reagents, replacing vulnerable parts, repairing, modifying equipment structure, and modifying equipment programs. Currently, most equipment maintenance in wafer testing is based on subjective arrangements by operators (OPs, referring to production line operators) or manual arrangements assisted by MES (manufacturing execution system). However, due to the continuous growth in demand for wafer packaging and testing and the increasing scale of the industry, the intensity of wafer packaging and testing production operations has also increased significantly, and the current management methods are no longer able to meet the new requirements.

[0003] Specifically, the maintenance process requires cooperation between the OP (Operation) station, the equipment station (mainly staffed by equipment engineers, often abbreviated as EE), and the QC (Quality Control) station (mainly staffed by quality engineers). For example, when equipment alarms, the OP informs the equipment engineer, who then confirms whether maintenance is needed and what type of maintenance is required. After maintenance, the OP is notified to conduct first-article verification. The first article is sent to the QC station for inspection and verification. If the verification is successful, the maintenance ends; if it fails, it needs to be reconfirmed and the maintenance repeated. After successful verification and maintenance, the equipment engineer or other authorized personnel need to be notified to adjust the MES system to a production-ready state.

[0004] Different maintenance projects involve different sites. For example, some maintenance projects only require the participation of OP and equipment engineers, while others require the participation of LAB (laboratory engineer) for verification, and still others do not require the participation of LAB for verification. Therefore, if a manual notification and supervision method is adopted, it is easy to cause process chaos and production abnormalities.

[0005] It is evident that the current management methods suffer from several problems, including susceptibility to misjudgment, high management costs, low management efficiency, and impact on equipment uptime. Furthermore, due to the manual arrangement of management, issues such as shirking tasks and evading responsibility often arise, posing challenges to the sustainable development of the wafer packaging and testing industry. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide an automatic dispatching method and system for maintenance tasks of wafer packaging and testing equipment.

[0007] To achieve the aforementioned object of the invention, the technical solutions adopted by the present invention include: In a first aspect, the present invention provides an automatic dispatching method for maintenance tasks of wafer packaging and testing equipment, comprising: Multiple workflows are provided for different maintenance projects, and the workflows include workstations arranged in a preset order. Obtain the current maintenance items of the wafer packaging and testing equipment, and create work tasks according to the workflow corresponding to the current maintenance items; Subtasks are generated at the corresponding work stations according to the order of the work stations in the work task. According to the preset order, the subtask of the next adjacent work station can only be executed after the subtask of the previous work station has been confirmed as completed or verified. The maintenance task ends when all the subtasks in all work stations in the workflow have been confirmed as completed or verified.

[0008] Secondly, the present invention also provides an automatic dispatching system for maintenance tasks of wafer packaging and testing equipment, comprising: A customized process module is used to provide multiple workflows corresponding to multiple different maintenance projects. The workflows include workstations combined in a preset order. The work task module is used to obtain the current maintenance items of the wafer packaging and testing equipment and create work tasks according to the workflow corresponding to the current maintenance items. The subtask generation module is used to generate subtasks at the corresponding workstations according to the order of the workstations in the work task. The task management module is used to execute the subtask of the next adjacent workstation only after the subtask of the previous workstation has been confirmed as completed or verified, in the preset order, until all subtasks in all workstations in the workflow have been confirmed as completed or verified.

[0009] Based on the above technical solution, compared with the prior art, the beneficial effects of the present invention include at least the following: The automatic maintenance task dispatching method and system provided by this invention is based on a pre-defined workflow corresponding to the maintenance project. It directly determines the site order according to the current maintenance project, so that the site corresponding to each maintenance project is determined. Faced with the current maintenance project, the staff at each site only need to work and confirm according to the sub-tasks given by the system. After all sub-tasks are completed, the system automatically determines that the maintenance project is over and unlocks the equipment or adjusts it to a production-ready system state. There is no need to frequently transmit information between different sites or manually switch the production status of the machines. This avoids the high management costs and confusion caused by manual notification and dispatching management. It can also lock the machine and prevent production when maintenance projects are dispatched but not yet handled by personnel, and when quality verification devices are completed after maintenance, thus preventing the production of defective products and significantly improving the management efficiency of production enterprises.

[0010] The above description is merely an overview of the technical solution of the present invention. In order to enable those skilled in the art to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described below in conjunction with detailed drawings. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall process of the automatic dispatching method for maintenance tasks provided in some typical implementation cases of the present invention; Figure 2 This is a flowchart illustrating the automatic dispatching method for maintenance tasks provided in a specific typical implementation case of the present invention. Figure 3 This is a flowchart illustrating the automatic dispatching method for maintenance tasks provided in another specific typical embodiment of the present invention. Figure 4 This is a flowchart illustrating the automatic dispatching method for maintenance tasks provided in another specific typical implementation case of the present invention. Figure 5 This is a flowchart illustrating the automatic dispatching method for maintenance tasks provided in another specific and typical embodiment of the present invention. Figure 6 This is a flowchart illustrating the automatic dispatching method for maintenance tasks provided in another specific and typical embodiment of the present invention. Detailed Implementation

[0012] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The following will further explain and illustrate this technical solution, its implementation process, and its principles.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0014] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component or method step from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components or method steps.

[0015] This invention provides an automatic dispatching method for maintenance tasks of wafer packaging and testing equipment, comprising: S1. Provide multiple workflows corresponding to multiple different maintenance projects, wherein the workflows include workstations arranged in a preset order; S2. Obtain the current maintenance items of the wafer packaging and testing equipment, and establish work tasks according to the workflow corresponding to the current maintenance items; S3. Generate sub-tasks at the corresponding work stations according to the order of the work stations in the work task; S4. According to the preset order, the subtask of the next adjacent work station can only be executed after the subtask of the previous work station is confirmed to be completed or verified, until the subtask of all work stations in the workflow is confirmed to be completed or verified, and the maintenance task ends.

[0016] This invention primarily addresses the maintenance needs of semiconductor packaging and testing production lines by developing a dispatch method and system. In actual production, when maintenance projects involve routine replacement of consumables and other materials, the requirements for quality verification are relatively low, often requiring only the participation of operators (OPs) or a combination of OPs and QC, without the need for equipment engineers. However, for more complex maintenance projects, such as those requiring the replacement / repair of critical equipment components, the entire process is significantly more complex, potentially requiring the participation of almost all stations on the production line. Even after QC's first-article verification, the outgoing inspection station may need to continuously sample shipments for verification before the maintenance project can be confirmed as fully successful. Therefore, when different maintenance projects occur continuously on a production line, the information exchange between various stations becomes extremely frequent and complex, leading to a sharp increase in management costs. This invention, however, pre-determines which stations correspond to different maintenance projects and the order of connection between different stations by specifying the workflow in advance. When a corresponding maintenance project occurs, the system directly generates a work task and sorts the stations in order. The staff at each station only need to obtain the corresponding sub-task at their own station and execute it. After all sub-tasks of a maintenance task have been executed and confirmed by all stations, the system automatically determines that the current maintenance project has been completed, unlocks the equipment, and puts it into a production-ready state. This eliminates the need for frequent information transmission between multiple stations, significantly reducing communication costs.

[0017] The most significant difference between the above technical solution and the existing automated equipment maintenance management platforms of many semiconductor companies lies in the pre-setting of workflows. A specific workflow is set for each maintenance project, and once the maintenance project occurs, each station directly executes its own sub-tasks according to the preset workflow without the need for coordination or communication between stations. Each station only needs to focus on its own sub-tasks on the management platform. Moreover, from the perspective of a certain station, it can simultaneously see a list of sub-tasks generated by many different maintenance projects, which facilitates reasonable work arrangements for that station. For example, it can allocate personnel or collect all materials for sub-tasks that require the same material at once.

[0018] Regarding the types of maintenance items, in some implementation schemes, the maintenance items include materials reaching their shelf life, materials reaching their lifespan, switching machine output types, maintenance without parts replacement, and maintenance with parts replacement. A production line often has several semiconductor packaging and testing equipment, so for a production line, multiple current maintenance items may occur simultaneously on different equipment (different types of equipment, or different machines of the same type of equipment).

[0019] Regarding how to determine the current maintenance project, it can be done manually by inputting / selecting new maintenance projects. Alternatively, in some implementation schemes, the automatic dispatching method for maintenance tasks may also include the following steps: Collect feedback information from the wafer packaging and testing equipment. When the feedback information meets preset conditions, generate a corresponding current maintenance item for the wafer packaging and testing equipment.

[0020] In some implementations, the preset conditions include either the material usage count reaching a set threshold or the alarm frequency of similar equipment reaching a set threshold.

[0021] For example, in some embodiments, when the material usage count (usage duration or number of uses) reaches the shelf life, the maintenance project for the material reaching the shelf life mentioned above is automatically created; or when the material usage count reaches the final lifespan of the material, the maintenance project for the material reaching the lifespan is automatically created; and the performance degradation or damage of components often leads to equipment alarms, so when the equipment alarm frequency (e.g., the number of alarms of the same type within 1 hour) reaches a set number, maintenance projects for repairs without parts replacement or repairs with parts replacement can be automatically created according to the alarm type and alarm frequency.

[0022] As a typical example of the above technical solution, see [link to relevant documentation]. Figure 2 As shown, when a maintenance project occurs where materials have reached their shelf life, the system will automatically lock the corresponding equipment and switch it to maintenance status (materials to be replaced). After the operator logs into the system to receive the maintenance sub-task, they will execute the corresponding material replacement task. Once completed, the operator can enter the completion information at the operator's workstation to unlock the equipment and switch it to production status. Of course, for some critical consumables, the system can automatically determine the machine number. After a consumables receipt record is found, a QC workstation will be automatically added after the operator's workstation. The operator will be assigned the sub-task of making the first piece and the quality engineer will be assigned the sub-task of performing the first piece verification.

[0023] Other typical examples include Figure 3 As shown, when the equipment alarms frequently, if the alarm type indicates that no parts need to be replaced and simple repairs are sufficient, a maintenance project without parts replacement needs to be performed. In this case, the system still locks the equipment and changes its status. The equipment engineer can receive (or be automatically assigned) the corresponding maintenance sub-task at their own workstation. After the sub-task is executed, the equipment can be unlocked for trial production. This process can be set to not require the participation of the QC workstation. The outgoing inspection workstation (3VI) performs defective product sampling inspection. When the inspection passes without any problems, the maintenance task ends.

[0024] There are also some typical examples such as Figure 4As shown, when a more serious situation occurs, such as when materials exceed their shelf life or reach their lifespan limit (usually the shelf life is set to be shorter than the material's lifespan limit), the number of workstations required to participate increases significantly and becomes more complex. In the general order, the equipment workstation first performs the material replacement sub-task, then the QC workstation performs two first-article verification sub-tasks, and finally the equipment workstation performs the confirmation sub-task to determine whether the equipment is ready for production. Only after all sub-tasks are completed and pass the test can the equipment be switched to production mode.

[0025] Other typical implementation cases, for example Figure 5 As shown, when the product output by the equipment changes and adjustments to the equipment are required, the process is similar to... Figure 4 The process shown differs in the specific subtasks.

[0026] When maintenance projects require the replacement of critical components, the overall process becomes more complex, such as... Figure 6 As shown, in Figure 4 and Figure 5 Based on the process shown, this scenario also requires the addition of an outbound inspection workstation (3VI) to perform a defective product sampling inspection. Only after all the sub-tasks of the equipment, QC, and other workstations have been completed in sequence and passed verification can the equipment be switched to production status.

[0027] In any of the above scenarios, if any subtask at any workstation fails to execute or fails verification, the device will be automatically relocked and adjusted to the corresponding abnormal state, such as "quality verification failed" or "requires repair".

[0028] Furthermore, it should be noted that, for ease of demonstration, this application will... Figures 2-6 It was rotated 90° to the left and placed vertically.

[0029] Regarding how the sub-tasks reach the corresponding staff, in some implementation schemes, the sub-tasks are proactively picked up by the staff at the workstation, or directly assigned to designated personnel to receive the sub-tasks.

[0030] In some implementation schemes, the process of directly assigning a designated person to receive the sub-task may specifically include the following steps: S10. Obtain maintenance information, which includes current maintenance items corresponding to multiple wafer packaging and testing equipment, and may also include specific auxiliary information such as the maintenance duration corresponding to the current maintenance item; it also includes expected maintenance items, and may include specific auxiliary information such as the occurrence time and corresponding maintenance duration of the expected maintenance items; wherein, the current maintenance items can be automatically captured by the system based on whether the time has expired, whether the consumables are close to being exhausted, whether the laboratory test exceeds the standard, whether the equipment alarms, etc., or the current maintenance items can be added manually by the administrator as shown below. Maintenance projects are defined as follows: planned maintenance projects are calculated based on production plans, current consumable reserves, and laboratory test data. These are planned and predictable maintenance projects within a foreseeable period (e.g., 12 hours, 24 hours, or even a week; the specific period length is not limited and may vary depending on different process stations). Each wafer packaging and testing equipment has its own maintenance plan, which records whether there are current maintenance projects, the specific content of the current maintenance projects, future foreseeable maintenance projects and their corresponding specific content, the time of occurrence, and the maintenance duration (the time from the start to the end of maintenance).

[0031] S20. Generate a sub-task sequence for each workstation based on the maintenance information. The sub-task sequence includes the current sub-task and the expected sub-task. For example, for a maintenance project involving consumable replacement, the sub-task of the OP workstation is to replace the consumable, while the sub-task of the QC workstation is to confirm the quality of the first piece after the consumable replacement, without the participation of other workstations. For complex component repair and replacement, the sub-task of the OP workstation is to provide the first piece after repair, the sub-task of the equipment workstation is to repair and replace components, the sub-task of the QC workstation is to verify the first piece after repair, and the OP is responsible for the continuous random inspection of the repaired products by the 3VI (3-Vision Inspection) workstation.

[0032] S30. Obtain personnel information, which includes the staff of the workstation (which may be a personnel list, employee number, or identity number, etc., without specific restrictions), a list of sub-tasks that any of the staff members can perform, and the current work plan of the staff members; wherein, the staff members may be production line operators, or equipment engineers, process engineers (e.g., those who maintain pharmaceuticals), laboratory quality engineers, etc. with equipment maintenance qualifications; their work plans mainly record when and what specific maintenance items need to be performed on which equipment.

[0033] S40. Based on the current subtask and personnel information, arrange and combine the staff who can perform the current subtask to form the current assignment array. The arrangement and combination in the current assignment array is usually multiple. For example, when the entire site has only one subtask but has N staff who can perform it, the number of arrangement and combination is N. When there are multiple subtasks and different staff options, they can be assigned by mathematical permutation and combination.

[0034] S50. In the current assignment array, select the permutation and combination of all expected subtasks that can satisfy the nearest neighbors as the expected assignment combination; wherein, the nearest neighbor subtask refers to the subtask that is closest to the current time among the subtasks corresponding to the expected maintenance project in a certain work station according to time sorting.

[0035] S60. Based on the expected assignment combination, update the work plan of the staff to form an assignment work plan.

[0036] Based on the above technical solution, this invention not only matches staff qualifications with corresponding maintenance projects, but also arranges multiple combinations of current maintenance projects and selects the combination that best meets the expected future maintenance projects for assignment, or selects several feasible combinations for further manual selection and assignment. This assignment method is the most reasonable, has high management cost and efficiency, and avoids the phenomenon of staff shirking responsibility and evading duties that is very easy to occur when assigning tasks manually.

[0037] Regarding the continuous production and maintenance projects, some implementation plans state: When any of the current maintenance projects mentioned above is completed, the current work plan of the corresponding staff is updated, and a new round of sub-task assignment is performed.

[0038] Alternatively, in some implementations, when a current maintenance item or a planned maintenance item is added to one of the multiple wafer packaging and testing devices, a new round of subtask assignment is performed.

[0039] However, in some special situations, such as in some implementation schemes, when a new maintenance item is added to the wafer packaging and testing equipment and the current dispatch array cannot fully satisfy all the current sub-tasks corresponding to all the wafer packaging and testing equipment: The current maintenance items are sorted by urgency, and the expandable items are selected. The expandable items are then transferred to the expected maintenance items, and the maintenance information is updated. The staff's work plan is updated with the updated maintenance information.

[0040] More specifically, in some implementation schemes, the factors considered in the urgency ranking include the criticality level of the current maintenance item, the time remaining until the end of its service life, and the corresponding maintenance duration. The current maintenance item with the higher criticality level, the shorter the time remaining until the end of its service life, and the longer the corresponding maintenance duration is ranked higher in the urgency ranking, and the current maintenance item ranked lower is selected as the extendable item.

[0041] The criticality level can be manually specified and adjusted. For example, critical agents, critical parts, and critical consumables will have their criticality level set to the highest, while others can be rated according to their functions and impact on production quality. In addition, some current maintenance projects are generated because they have reached the warning threshold, but the time remaining before the deadline varies. When the time remaining before the deadline is closer, a higher urgency score should be assigned. Furthermore, if the maintenance time required for a certain project is significantly longer than that of other maintenance projects, it should be completed urgently to avoid difficulties in scheduling later.

[0042] In summary, the technical solution proposed in this invention adjusts the allocation plan in real time as production progresses, and can also accept new maintenance projects in real time and make corresponding plan adjustments. In some implementation schemes, the method for adding current maintenance projects and / or expected maintenance projects may include the following process: Automated generation of maintenance items: When any of the wafer packaging and testing equipment experiences an abnormal item, the maintenance items related to the abnormal item are matched and added as the current maintenance item.

[0043] In some implementation schemes, manual designation of maintenance items can also be performed: that is, by receiving manual designation, the corresponding current maintenance items and / or expected maintenance items can be added.

[0044] In addition, as is common practice in the industry, in some implementation schemes, when the wafer packaging and testing equipment has a corresponding current maintenance item, the wafer packaging and testing equipment is locked and cannot perform production operations; when the current maintenance item is completed and verified, the wafer packaging and testing equipment is unlocked.

[0045] However, the present invention also proposes a better implementation method that dynamically adjusts the assignment plan based on whether the maintenance is completed and verified within the expected time. That is, in some implementation methods, for a certain wafer packaging and testing equipment, when the maintenance time corresponding to the current maintenance project is exceeded and the current maintenance project is not verified, the current maintenance project and its corresponding maintenance time are copied in the current wafer packaging and testing equipment to generate a new current maintenance project, and the staff corresponding to the current maintenance project are continued to be assigned to the copied new current maintenance project.

[0046] Correspondingly, a second aspect of the present invention also provides a maintenance task assignment system for wafer packaging and testing equipment, comprising: A customized process module is used to provide multiple workflows corresponding to multiple different maintenance projects. The workflows include workstations combined in a preset order. The work task module is used to obtain the current maintenance items of the wafer packaging and testing equipment and create work tasks according to the workflow corresponding to the current maintenance items. The subtask generation module is used to generate subtasks at the corresponding workstations according to the order of the workstations in the work task. The task management module is used to execute the subtask of the next adjacent workstation only after the subtask of the previous workstation has been confirmed as completed or verified, in the preset order, until all subtasks in all workstations in the workflow have been confirmed as completed or verified.

[0047] Finally, based on the methods and systems provided above, this invention can achieve dynamic maintenance task assignment during the production process of wafer packaging and testing. In the embodiments of this invention, multiple wafer packaging and testing devices and multiple corresponding personnel are assigned a comprehensive plan for current projects and future expected projects. First, based on the maintenance projects that need to be carried out, multiple feasible personnel allocation combinations are identified. Then, the combination that best meets the expected future maintenance projects is selected, and the work plan of each personnel is updated. This not only comprehensively coordinates the spatial overlap of each wafer packaging and testing device and different maintenance projects, but also fully considers the balance between current tasks and expected tasks on a time scale, achieving automated and efficient assignment of maintenance tasks. At the same time, it can also significantly reduce the phenomenon of personnel shirking tasks and evading responsibility.

[0048] It should be understood that the above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for automatically dispatching maintenance tasks for wafer packaging and testing equipment, characterized in that, include: Multiple workflows are provided for different maintenance projects, and the workflows include workstations arranged in a preset order. Obtain the current maintenance items of the wafer packaging and testing equipment, and create work tasks according to the workflow corresponding to the current maintenance items; Subtasks are generated at the corresponding work stations according to the order of the work stations in the work task. According to the preset order, the subtask of the next adjacent work station can only be executed after the subtask of the previous work station has been confirmed as completed or verified. The maintenance task ends when all the subtasks in all work stations in the workflow have been confirmed as completed or verified.

2. The automatic maintenance task dispatching method according to claim 1, characterized in that, The maintenance items include materials reaching their shelf life, materials reaching their lifespan, switching machine output types, maintenance without parts replacement, and maintenance with parts replacement.

3. The automatic maintenance task dispatching method according to claim 1 or 2, characterized in that, Also includes: Collect feedback information from the wafer packaging and testing equipment. When the feedback information meets preset conditions, generate a corresponding current maintenance item for the wafer packaging and testing equipment.

4. The automatic maintenance task dispatching method according to claim 3, characterized in that, The preset conditions include either the material usage count reaching a set threshold or the alarm frequency of the same type of equipment reaching a set threshold.

5. The automatic maintenance task dispatching method according to claim 1, characterized in that, The sub-tasks are either proactively received by staff at the workstation or directly assigned to designated personnel.

6. The automatic maintenance task dispatching method according to claim 5, characterized in that, The process of directly assigning a designated person to receive the sub-task specifically includes: Obtain maintenance information, which includes the current maintenance items and expected maintenance items corresponding to multiple wafer packaging and testing equipment; A subtask sequence is generated for each workstation based on the maintenance information, and the subtask sequence includes the current subtask and the expected subtask. Obtain personnel information, which includes the staff at the workstation, a list of sub-tasks that any of the staff members can perform, and the staff member's current work plan; Based on the current sub-task and personnel information, the staff members who can perform the current sub-task are arranged and combined to form the current assignment array; In the current assignment array, select all permutations and combinations that can satisfy all expected subtasks of the nearest neighbors as expected assignment combinations; Based on the expected assignment combination, update the work plan of the staff.

7. The automatic maintenance task dispatching method according to claim 6, characterized in that, Also includes: When any of the current maintenance projects mentioned above is completed, the current work plan of the corresponding staff is updated, and a new round of sub-task assignment is performed. And / or, when a current maintenance item or a planned maintenance item is added to one of the multiple wafer packaging and testing devices, a new round of subtask assignment is performed.

8. The automatic maintenance task dispatching method according to claim 7, characterized in that, When a new maintenance item is added to the wafer packaging and testing equipment, and the current dispatch array cannot fully satisfy all the current sub-tasks corresponding to all the wafer packaging and testing equipment: The current maintenance items are sorted by urgency, and the expandable items are selected. The expandable items are then transferred to the expected maintenance items, and the maintenance information is updated. The staff's work plan is updated with the updated maintenance information.

9. The automatic maintenance task dispatching method according to claim 8, characterized in that, The factors considered in the urgency ranking include the criticality level of the current maintenance item, the time remaining until the end of its service life, and the corresponding maintenance duration. The current maintenance item with the higher criticality level, the shorter the time remaining until the end of its service life, and the longer the corresponding maintenance duration is ranked higher in the urgency ranking. The current maintenance items ranked lower are selected as the extendable items.

10. An automatic dispatching system for maintenance tasks of wafer packaging and testing equipment, characterized in that, include: A customized process module is used to provide multiple workflows corresponding to multiple different maintenance projects. The workflows include workstations combined in a preset order. The work task module is used to obtain the current maintenance items of the wafer packaging and testing equipment and create work tasks according to the workflow corresponding to the current maintenance items. The subtask generation module is used to generate subtasks at the corresponding workstations according to the order of the workstations in the work task. The task management module is used to execute the subtask of the next adjacent workstation only after the subtask of the previous workstation has been confirmed as completed or verified, in the preset order, until all subtasks in all workstations in the workflow have been confirmed as completed or verified.

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