Substrate for preventing misalignment of code positions

Abstract

The utility model relates to a kind of base plate for preventing code position misplacement, belong to packaging carrier plate manufacturing technical field;Including integrally formed first partition base plate, second partition base plate, third partition base plate and fourth partition base plate, the first partition base plate, second partition base plate, third partition base plate and fourth partition base plate are all provided with code position and positioning position.Punching four segmentation positioning of base plate, to prevent the case that the code position of equipment on base plate is punched after base plate expansion and contraction deformation and design requirement position do not match appears.Four-partition positioning is to position four segmentation of a board, it is also to divide the expansion and contraction deformation error of whole board, to directly improve the code position accuracy on base plate, simple operation, low in cost, so that it meets design requirement, improve product yield, reduce material and labor and other costs.

Description

Technical Field

[0001] This utility model relates to a substrate for preventing code misalignment, and belongs to the field of packaging substrate manufacturing technology. Background Technology

[0002] In the fields of electronics manufacturing and semiconductor packaging, the accuracy of substrate marking processes is crucial for product quality control. A significant technical bottleneck exists in current production processes: substrate materials are prone to expansion and contraction deformation under high temperature, humidity changes, or mechanical stress. Existing equipment can only perform marking operations through a single zone positioning system, leading to a systematic deviation between the actual marking position and the original design coordinates. This deviation has a cumulative effect on substrates with densely distributed marking positions. Specifically, when the substrate undergoes non-uniform deformation, traditional positioning systems cannot detect the deformation characteristics in real time and dynamically adjust the marking path. This causes multiple critical marking positions to simultaneously deviate from the tolerance range, making it impossible to guarantee that the marking position on the substrate after expansion and contraction matches the design requirements. This results in scrapped boards and increased material and labor costs.

[0003] For example, Chinese Patent Publication No. CN202242378U discloses a coding control system, relating to the field of machine identification code coding technology. This system includes a main controller for controlling coding, and a precision measuring device connected to the main controller. The precision measuring device sends the measured position offset of the code on the substrate to the main controller, which receives the offset. This improves the coding accuracy of the substrate on the production line, shortens the cycle time of the precision inspection process on the production line, and improves engineering stability. However, this coding control system is complex to operate and costly. Utility Model Content

[0004] The main purpose of this utility model is to provide a substrate that prevents code misalignment. It is simple to operate, low in cost, and prevents the two-digit code on the substrate from being misaligned with the design requirements after the substrate expands, contracts, or deforms.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A substrate for preventing code misalignment includes an integrally formed first partition substrate, second partition substrate, third partition substrate and fourth partition substrate, wherein the first partition substrate, second partition substrate, third partition substrate and fourth partition substrate are provided with coding positions and positioning positions.

[0006] By employing a one-piece molding design, the substrate is divided into four independent zones, each with its own marking and positioning positions. This ensures the overall structural stability of the substrate while enabling independent operation of each zone, enhancing production flexibility and efficiency. This four-zone positioning prevents discrepancies between the marking positions and design requirements after substrate expansion and contraction. Four-zone positioning divides the board into four sections, effectively reducing the overall expansion and contraction deformation error and directly improving the marking accuracy (reducing the error between marking positions and design requirements). The process is simple, low-cost, and ensures compliance with design requirements, improving product yield and reducing material and labor costs.

[0007] Preferably, the first partition substrate has a first coding position, the second partition substrate has a second coding position, the third partition substrate has a third coding position, and the fourth partition substrate has a fourth coding position.

[0008] The naming rules for the coding positions in each zone are clearly defined, and the identification method of the coding area is standardized, which facilitates unified management in the production process and identification by automated equipment, and reduces the risk of human error.

[0009] Preferably, the first coding position, the second coding position, the third coding position and the fourth coding position are all set on the strip plate, and each strip plate corresponds to one coding position. The coding position is used to print the QR code.

[0010] The substrate will eventually be cut into strip boards for shipment. To facilitate traceability, an identification information is assigned to the strip board by printing a QR code. The QR code generates the following information: batch number + board number (pnl) + strip number.

[0011] Preferably, the first partition substrate is provided with a first positioning position, the second partition substrate is provided with a second positioning position, the third partition substrate is provided with a third positioning position, and the fourth partition substrate is provided with a fourth positioning position.

[0012] Each partition can be independently positioned to achieve precise partition-level positioning, avoiding cross-regional misalignment caused by local deformation or error accumulation when positioning the entire substrate. This is especially suitable for multi-station collaborative processing scenarios of large substrates.

[0013] Preferably, the first positioning position, the second positioning position, the third positioning position, and the fourth positioning position each include two upper positioning positions and two lower positioning positions. The two upper positioning positions are located at the upper left and right corners of the first partition substrate, the second partition substrate, the third partition substrate, or the fourth partition substrate, and the two lower positioning positions are located at the lower left and right corners of the first partition substrate, the second partition substrate, the third partition substrate, or the fourth partition substrate.

[0014] By employing two upper positioning elements and two lower positioning elements, combined with a symmetrical left-right distribution, a stable quadrilateral positioning structure is formed. This structure allows for rapid pre-alignment through the upper positioning elements and final precise fixing through the lower positioning elements, significantly improving the substrate's resistance to displacement during processing.

[0015] Preferably, the upper positioning is a + shape.

[0016] The upper positioning adopts a "+" shaped structure design, and its intersection can provide a precise center positioning reference, which makes it easy for the visual recognition system to quickly capture positioning features. At the same time, the "+" shaped line structure has lower requirements for processing accuracy, reducing manufacturing costs.

[0017] Preferably, the lower positioning is a rectangular shape.

[0018] The lower positioning uses a square shape design, and the edge of the frame can provide a clear boundary reference, which enhances the fault tolerance of positioning (even if some frame lines are worn, positioning can still be achieved through the remaining edge lines), and is distinguished from "+".

[0019] The beneficial effects of this utility model are as follows: This invention discloses a substrate for preventing code misalignment. The substrate is divided into four independent zones, each with its own independent coding and positioning positions. This independent positioning design allows each zone to adjust independently based on its own deformation, avoiding cross-regional misalignment caused by local deformation or accumulated errors during overall substrate positioning. Combined with symmetrically distributed positioning points, a "+" shaped upper positioning and a square-shaped lower positioning, a stable quadrilateral positioning structure is formed. This structure enables rapid pre-alignment through upper positioning and precise final fixing through lower positioning, significantly improving the substrate's resistance to displacement during processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a substrate for preventing code misalignment according to the present invention; Figure 2 This is a structural diagram of the coding position; Figure 3 This is a structural diagram for locating the position.

[0021] In the diagram: 1. First partition substrate; 2. Second partition substrate; 3. Third partition substrate; 4. Fourth partition substrate; 5. First coding position; 6. Second coding position; 7. Third coding position; 8. Fourth coding position; 9. First positioning position; 10. Second positioning position; 11. Third positioning position; 12. Fourth positioning position; 13. Strip board; 14. QR code; 15. Upper positioning; 16. Lower positioning. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with the accompanying drawings, further elaborates on this utility model.

[0023] Example 1 like Figure 1 As shown, this embodiment discloses a substrate for preventing code misalignment, comprising an integrally formed first partition substrate 1, second partition substrate 2, third partition substrate 3, and fourth partition substrate 4. The first partition substrate 1 has a first coding position 5 and a first positioning position 9; the second partition substrate 2 has a second coding position 6 and a second positioning position 10; the third partition substrate 3 has a third coding position 7 and a third positioning position 11; and the fourth partition substrate 4 has a fourth coding position 8 and a fourth positioning position 12. Details are as follows: 1. Overall structure design of the substrate This implementation uses a resin-coated copper-clad laminate with an ink or dry film substrate, forming four zones through processes such as laser encapsulation, electroplating, developing, roller coating, film lamination, and curing. The total substrate size is 513mm × 617mm, and the four zones are arranged in a 2×2 matrix.

[0024] 2. Solution for implementing the masking area like Figure 2 As shown, the coding positions (5-8) for each partition are all set on strip board 13, and each partition has several strip boards 13: Strip board 13: 240.5*50~120mm. The substrate will eventually be cut into strip boards 13 for shipment. QR code 14: 1.5*1.5mm, used to assign identification information to strip plate 13, i.e., to print QR code 14 for easy traceability. The generated content information for QR code 14 is: batch number + plate number (pnl) + strip number.

[0025] 3. Implementation details of the positioning system like Figure 3 As shown, the positioning positions (9-12) use composite positioning marks: Upper positioning 15: +-shaped mark, arm length 1mm; serves as both target point and positioning point; Lower positioning 16: A square frame with a side length of 1mm; serving as both a target point and a positioning point; The equipment positioning error is controlled within ±0.05mm.

[0026] The process of blurring out the code: The initial coding process provides coordinate information (X, Y). Based on this information, target points are captured, and the captured coordinate information is returned. The two coordinates are compared, and coding proceeds only if the error is controlled within 0.5mm. Specifically, there are four target points in each of the four zones. The target point coordinate information is compared with the coordinate information returned by the device after capture. If the error is less than 0.5mm, it is determined that the substrate of that zone has no expansion or contraction, or the expansion or contraction does not affect the code position. When the comparison error exceeds 0.5mm, the device alarms and stops coding in the corresponding zone.

[0027] The substrate is divided into four independent zones, each with its own marking and positioning positions. This independent positioning design allows each zone to adjust independently based on its own deformation, avoiding cross-regional misalignment caused by local deformation or accumulated errors during overall substrate positioning. Combined with symmetrically distributed positioning points, such as the "+"-shaped upper positioning 15 and the square-shaped lower positioning 16, a stable quadrilateral positioning structure is formed. This structure allows for rapid pre-alignment via the upper positioning 15 and final precise fixing via the lower positioning 16, significantly improving the substrate's resistance to displacement during processing.

[0028] Furthermore, the optimization of the positioning point shape also plays a crucial role. The "+" shaped structure of the upper positioning 15 facilitates the vision system's rapid capture of the center point, reducing the requirements for machining accuracy; the square design of the lower positioning 16 provides clear boundary references through the frame edges, enhancing the positioning's fault tolerance. Even if some frame lines are worn, positioning can still be achieved through the remaining edges. This design also offers greater compatibility with the fixtures of automated equipment, further improving production efficiency.

[0029] In summary, by comprehensively applying technologies such as independent partitioning and positioning, double-layer marking frame design, and optimized positioning point shape, the problem of marking position misalignment caused by substrate expansion and contraction deformation can be significantly reduced, thereby lowering the scrap rate and reducing material and labor costs. At the same time, these technologies also improve production flexibility and are suitable for multi-station collaborative processing scenarios of large substrates.

[0030] According to actual production testing, compared with traditional substrates, this embodiment has a 40% shorter positioning time (from 8s to 4.8s) and a 92% lower coding misalignment rate (from 2.3% to 0.18%).

[0031] This implementation method achieves high-precision coding and positioning of multi-zone substrates through structural optimization and process innovation, and is particularly suitable for fields with stringent positioning accuracy requirements such as semiconductor packaging and PCB manufacturing.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A substrate for preventing code misalignment, characterized in that: It includes an integrally formed first partition substrate (1), second partition substrate (2), third partition substrate (3) and fourth partition substrate (4), and each of the first partition substrate (1), second partition substrate (2), third partition substrate (3) and fourth partition substrate (4) is provided with a marking position and a positioning position.

2. The substrate for preventing code misalignment according to claim 1, characterized in that: The first partition substrate (1) is provided with a first coding position (5), the second partition substrate (2) is provided with a second coding position (6), the third partition substrate (3) is provided with a third coding position (7), and the fourth partition substrate (4) is provided with a fourth coding position (8).

3. The substrate for preventing code misalignment according to claim 2, characterized in that: The first coding position (5), the second coding position (6), the third coding position (7) and the fourth coding position (8) are all set on the strip plate (13), and each strip plate (13) corresponds to a coding position. The coding position is used to print the QR code (14).

4. The substrate for preventing code misalignment according to claim 1, characterized in that: The first partition substrate (1) is provided with a first positioning position (9), the second partition substrate (2) is provided with a second positioning position (10), the third partition substrate (3) is provided with a third positioning position (11), and the fourth partition substrate (4) is provided with a fourth positioning position (12).

5. A substrate for preventing code misalignment according to claim 4, characterized in that: The first positioning position (9), the second positioning position (10), the third positioning position (11) and the fourth positioning position (12) each include two upper positioning (15) and two lower positioning (16). The two upper positioning (15) are located at the upper left and upper right corners of the first partition substrate (1), the second partition substrate (2), the third partition substrate (3) or the fourth partition substrate (4), and the two lower positioning (16) are located at the lower left and lower right corners of the first partition substrate (1), the second partition substrate (2), the third partition substrate (3) or the fourth partition substrate (4).

6. A substrate for preventing code misalignment according to claim 5, characterized in that: The upper positioning (15) is a + shape.

7. A substrate for preventing code misalignment according to claim 5, characterized in that: The lower positioning (16) is a square shape.

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