TWI238956B - Manufacturing method and the time tables on arranging the yield of each semiconductor factory - Google Patents

Abstract

The invention is for the semiconductor manufacturing company that has a plurality of manufacturing factories to arrange a production plan after the order but before the beginning of the mass production activity. When a demand forecast of the technology and the quantity is confirmed, a product number is assigned. By the predicted quantity, a plurality of factories that are technically capable to manufacture the product is assigned. The total yield of these assigned factories will satisfy the predicted quantity or the running processing lines of the factories producing the other products are replaced or exchanged by other factories to meet the order when the total yield is short. Then a manufacturing plan is set. The predicted time tables and the predicted quantity are set in each factory. When parts of the formal manufacturing processes begin to run, serial numbers are assigned. The quantity of each factory is assigned. According to the assigned quantity, the lot number behind the serial number is replaced by the code number of each factory and the manufacturing process number to identify the related product number of the manufacturing factory.

Description

1238956

FIELD OF THE INVENTION The present invention relates to a method for scheduling production of goods in a factory, and more particularly, to a method for scheduling production of another goods in a production factory only when it is commissioned. Background of the Invention ° For large foundry semiconductor factories, customers usually give the foundry a demand forecast for months or seasons, and then the foundry according to the current production schedule of its factories, The person in charge of the order performs the required planning of this demand (Demand planning), and the production schedule is programmed into the factory after the product code, so it is not flexible. Refer to the la-li diagram 'to illustrate the general order manufacturing schedule of semiconductors. In Figure la, the customer orders an order several seasons in advance. The order quantity is 15 units of wafers, of which each unit is 1,000 wafers. After receiving the order, as shown in Figure 1b, the order manager gives the order product a TM3388A product number, and then according to the production schedule in each factory and the technical capabilities that each factory can handle, arrange to make this in advance The factory type and number of the order are 2 units, 4 units, 3 units, 7 units, and 5 units, 4 units. And referring to circle lc, when the order manager further carried out detailed allocation planning according to the pre-scheduled schedule, sometimes it was found that the original allocation could not be fully achieved, and the 5 plant could only accommodate 3 units, which could not be reached. 4 units' therefore results in a non-support demand (NSD) of 1 unit. δ When the above excess occurs, see Figure Id. The order manager re-allocates the allocation (allocation management), queries the priority order of each order in the factory, and exchanges capacity, such as postponing some orders with lower priority. Or test processes to accommodate all the quantities of the order,

1238956 V. Description of the invention (2) After adjustment, the results obtained are 2 units and 5 units, 3 units and 6 units, and 5 units and 4 units. Then, referring to Figure 1e, the result of the above quota management is used as the number basis for this order planning (output planning), and the scheduling is scheduled according to the designated factory in the manufacturing execution system (MES) . Since the order is scheduled to be put into production in three batches in three plants, the three batches of the order are TM3388A-NBZ2, TM3388A-NBZ3 and TM3388A-NBZ5, where the last code represents the plant type that was put into production. Therefore, in the MES system, it is scheduled to produce 5, 6, and 4 units of products coded as TM3388A-ΝΒZ2, TM3388A-ΝΒZ3, and TM3388A-ΝΒZO5 in plants 2, 3, and 5, respectively. ^ When the customer confirms the order entry and the first batch of production is 4 units, refer to Figure If, first perform order management before production, and the order manager will schedule these three in the MES system. The available capacity in the plant is scheduled to produce TM3 388A-NBZ2, 1 unit in Plant 2, 3 units of TM3388A-NBZ3, 2 units, and TM3388A-NBZ5, 1 unit in Plant 5, respectively. When the scheduling result is generated, the actual > action of production is performed, as shown in Fig. Lh. However, the status of production may not be consistent with the current status of each plant. As shown in Figure li, the actual number of units that each plant can currently produce is 2 plants, 1 unit, 3 plants, 1 unit, and 5 plants, 2 units. Comparing the lh chart with the li chart, the 3 factories are scheduled to put into production 2 units, but the actual capacity can only accommodate 丨 units. If you want to transfer 1 unit that can't be harvested from plant 3 to plant 5 with capacity, because the unit number is TM3388A-NBZ3, it is restricted to produce in plant 3 and cannot be transferred to plant 5. In the above case, because the factory

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In combination with the product number, it lacks flexibility, so regular orders cannot be successfully completed. It takes a lot of effort to carry out the production capacity of each production line. Brief description of the invention leads to delays in delivery due to the actual online operation during actual production. And order management to enable intergenerational coordination. However, the foundry's production schedule cannot be matched, leading to estimated order managers often need the factory's central management system. In order to make the semiconductor foundry's order scheduling more flexible, the purpose of this issue is to provide a semiconductor manufacturing ^ production Scheduling method can be incorporated into the production plant category before the production can be officially put into production. Another object of the invention is to provide a method for specifying a factory type and a production schedule when it is put into production, so as to flexibly allocate the manufacturer type of the goods at any time. Another object of the invention is to provide a production scheduling method for a designated factory when it is put into production, so as not to be restricted by the factory number when it is scheduled for production. The present invention, a production scheduling method for designating a factory at the time of production, can be applied to a company with multiple manufacturing plants, such as a semiconductor foundry company, to arrange a production plan before the product that is ordered is officially put into production. The steps include receiving a demand forecast by the client first, where the booking order will contain the product that the customer wants to produce, the quantity of the product and the manufacturing requirements of the product, etc., upon receiving the booking order Then, first assign the second product number to the product. Then, at least two designated plants (allocation Pianning) are selected among the plurality of manufacturing plants of the company according to the predetermined manufacturing quantity in the order form, and the total capacity of the designated plants can accommodate the production of the predetermined quantity of products. When the company confirms that it can be included in the order, it schedules a production plan (outpui: planning) and

1238956 V. Description of the invention (4)-I enter the scheduled time and production volume of the product produced by the product number V when the product is a certain amount of the product ^ Γ " Ba Difen κ said the last '' According to the current production capacity of these designated factories, S 摅 :: Γ is to be put into production, the number of products to be put into production in each of the specified *, and the batch number after the product m product number is replaced by each factory code and I : Code 1 represents the product put into production in each plant. • In the present invention, the quota (allocation -ng) that can be produced by each factory is not included in the factory number of the product, but before the second technical production is finalized, after confirming the manufacturer and the number of the product, Only after the ® μ has been incorporated into the product number, in the production schedule before formal production, the number of products that can be allocated among the factories is not limited by the factory number ... which allows the above-mentioned objects, features, and advantages of the present invention to It is more obvious and easy to understand, and the following detailed description is given in conjunction with the attached drawings: The drawings are briefly explained. Figures 1 a-1 i show the schematic flow chart of the general order manufacturing process of semiconductors. Figure 2 shows the In one embodiment of the invention, the architecture diagram of the production scheduling system of the designated factory at the time of commissioning is shown in FIG. 3. FIG. 3 shows a flowchart of the method of specifying the production schedule of the factory at the time of commissioning according to an embodiment of the present invention. Figures 4a-4h are schematic diagrams showing the scheduling flow of order manufacturing of a semiconductor according to an embodiment of the present invention. Symbols 202, 204 ~ manufacturing execution system;

0503 -6684TW; TSMC2001 -0494; peggy. ~step. Embodiment First, referring to FIG. 2, a system architecture diagram for production scheduling according to an embodiment of the present invention will be described. Semiconductor companies in multiple manufacturers have their own manufacturing execution systems (Manufacture

Execution System (MES), such as MES 202 and 204, is used to integrate, allocate, and track the manufacturing progress and production data of goods in each factory. In addition, semiconductor companies usually also have an order management system (0M), such as ⑽2 06, for processing customer demand estimates or order actions. The present invention can use a database to store the capacity status and customer demand data from the manufacturing plants in mes and OM, such as the π database 208, which stores the current capacity information of different manufacturing plants in the company. And using a server, according to various capacity data in the CI database 208, when the invention is put into operation, the factory-specific production scheduling (PM) is specified, such as the PM server 210 in Figure 2 . ° Refer to Figure 3, using a semiconductor manufacturing company's production schedule as an example, to explain the method of specifying the factory's production schedule when it is put into production. See Figure 4 for an explanation of the distribution of demand for an order at each stage during production scheduling. In a semiconductor company with multiple manufacturing plants and a MES system, when a customer informs a manufacturing need in advance,

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V. Description of the invention (6) Step 2 0 2 ·· Receive a reservation order, make the quantity of 0 and the manufacturing requirements, such as technology x s, early. A product that contains a wide range of predetermined products & such as TM3389, raw 'bit' 5 designation-product number to round. As shown in Figure 4b. With this production 4, the mother unit is 1000 wafers. Production schedule. / Production-blind 'can be used to manage the follow-up of the product, from $ = step 204 · At least two designated factories are selected from a plurality of manufacturing factories according to the predetermined manufacturing quantity in the order, and the total capacity can accommodate the production of the predetermined quantity Products. In the option =, first consider the manufacturers that can support the manufacturing technology of the product. Among the manufacturers that meet the technical requirements, the remaining capacity of plutonium is sufficient for plant personnel to consider. According to the conditions that meet the requirements, each manufacturer finds the most suitable manufacturer to take over the batch of products, and assigns the total number of products to the manufacturing capacity of each factory according to the designated remaining capacity of each factory. In the above steps, when the production capacity supported by the technology is insufficient, such as the 3, 4 and 5 factories in FIG. 4c, allocating management can be used to exhaust the available capacity. For example: postponing certain lower-priority product orders or test processes, so that the designated manufacturing plant can discharge capacity to accommodate all the quantities of the order, such as 3, 4, 5 and 6 in Figure 4d after adjustment Factory, can fully accommodate this demand. After μ, proceed to step 206: schedule a production plan, and enter the scheduled time and production volume of the product with the product number in the specified Wei. The production schedule can be scheduled in the company's MES system, including the designated manufacturing plant to which the product is to be distributed, and the planned production quantity of each plant, as shown in Figure 4e.

0503-6684TWF; TSMC2001-0494; peggy.ptd Page 10 1238956 V. Description of the invention (7) In the MES system of the 3rd, 4th, 5th, and 6th factory, the predetermined capacity required for the pen is scheduled. And in Figures 4a to 4e, the requirements of the batch of products are managed by TM3389. Then 'When the client confirms that a part of the product is officially put into production, such as 5 units, go to step 208: edit after the product number The first-class water number is used to represent the batch of products to be put into production, such as TM3389-001. As shown in Figure 4f, 5 units of goods are allocated to 3 plants, 2 units, 4 plants, 2 units, and 5 plants, 1 unit. However, the goods in each plant are managed with TM3389-00 1 as the product number. Finally, proceed to step 210: Allocate the quantity of the batch of products to be put into production in each of the designated factories according to the current production capacity of the designated factories, and replace the batch number after the product number is based on the allocation result. Each plant code and process code 'is used to represent the product put into production in each plant. For example, the 4th plant in Figures 3, 4 and 5 are TM3389-NBZ3, TM3389-NBZ4 and TM3 389-NBZ5. Since the batches of the goods are all made in the same process, the process code is NBZ, and the subsequent figures represent different factories. This number can be stored in the company's MES system as the manufacturing management number of the product. Wafer start is performed according to the results, as shown in Figure 4h. With the above method, in the production schedule, only the product code and batch code are programmed, and the production quantity is allocated according to the current production capacity of each designated manufacturing plant until the formal production, and the product code is followed by the factory code The manufacturing code replaces the serial number. It is also because the time of programming the factory number is before the production, so when the final production schedule is carried out, the factory number will not be limited, and the number of indirect single production of each factory can be flexibly configured according to the current production status of each factory, so that

0503 -6684TW; TSMC2001 -0494; peggy. Pt d p. 11 1238956 V. Description of the invention (8) The production schedule before production can be more flexible. Although the present invention is disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

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Claims (1)

1238956 _ L A method of specifying the production schedule of a factory when it is put into production. It is suitable for arranging a production plan before a company with two manufacturing plants officially puts into operation. It includes the following steps: (a) receiving a reservation order, where The booking order contains information on the quantity and manufacturing requirements of a given product 'and assigns a product number to the given product; (b) According to the company's remanufacturing, the company chooses at least one of the manufacturers according to the manufacturing quantity scheduled in the booking form. And 'designated factories whose total capacity can accommodate the production of the given quantity of products;' (C) schedule a production plan, and schedule the production of the product with the product number in the designated factories Time schedule and the predetermined production volume of each factory; (/) when a part of the product is officially put into production, the first-class water number is coded after the product number to represent the batch of products to be put into production; and (e ) Allocate the number I 'of the batch of products to be put into production in each designated factory and replace the serial number after the product number is assigned to each factory code according to the allocation result to represent the products put into production in each factory . 2. The method according to item 1 of the scope of patent application, wherein the existing product is a semiconductor product. 3. The method according to item 1 of the scope of patent application, wherein in step (b), the company selects at least two designated obstacles from the plurality of manufacturing plants of the company's selection of a manufacturing plant capable of manufacturing the product. 4. According to the method described in item 1 of the scope of patent application, wherein the step (dagger) further includes when the total production capacity of the designated plants cannot fully accommodate the production of the predetermined number of products, 'the capacity exchange with other products is first performed to Moved out ^ 1238956 6. Scope of patent application Meets the needs of this product. 5. The method according to item 1 of the scope of the patent application, wherein in step (d), the serial number is replaced by each plant code, and then the process number of the product is added. Ren 6 · — A production scheduling method that specifies a factory at the time of commissioning. It is suitable for scheduling a production day before a semiconductor manufacturing company with multiple manufacturing facilities is officially put into operation. It includes the following steps: (a) receiving a reservation 'Where the order contains the quantity and manufacturing technology information of a given semiconductor product' and assign a product number to the given product, (b) according to the number of manufacturing scheduled in the order, the company's multiple manufacturing plants Select at least two designated factories that can be supported by technical capabilities, and the total capacity of these designated factories can accommodate the production of the given number of products. If the total capacity is insufficient, proceed to step (c); (c) and such manufacturing Exchange the production capacity of other products in the factory in order to shift the production capacity to meet the needs of the product; (d) Schedule a production plan to include the scheduled time of production of the product with the product number in the designated factories and the factories Predetermined manufacturing volume; (e) When a part of the product is officially put into production, a first-class water number is coded after the product number to represent the batch of products to be put into production; and (f) allocation The number of products to be put into production in each of the designated factories, and the serial number after the product number is replaced with the factory code according to the allocation result. 1238956 VI. Application for patent scope 7. The method described in item 6 of the scope of patent application, wherein in step (e) the serial number is replaced by each plant code, and then incorporated into the product process code 0 0503-6684TWF; TSMC2001 -0494; peggy.ptd p. 15