Lead frame structure capable of improving material utilization and equipment efficiency
By designing a 14-row, 72-column product unit structure on the lead frame, the problem of low density in traditional lead frames is solved, and material utilization and equipment efficiency are significantly improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional lead frame products have low density, low material utilization, and low output of equipment for molding and lead cutting processes, resulting in low production efficiency.
It adopts a product unit structure design with 14 rows and 72 columns, and the frame base plate size is 309.96mm±0.102mm×100.00mm±0.051mm. The product unit density is high and it is suitable for automatic molding and rebar cutting processes.
The material utilization rate was increased by 70.73%, the output of the plastic sealing process equipment increased by 180%, and the output of the rebar cutting process equipment increased by 119.13%, resulting in a significant improvement in production efficiency.
Smart Images
Figure CN223968215U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of integrated circuit packaging technology, specifically to a lead frame structure that improves material utilization and equipment efficiency. Background Technology
[0002] Currently, in the semiconductor manufacturing process, semiconductors are usually integrated onto lead frames, which serve as the chip carrier of integrated circuits, forming electrical circuits and acting as a bridge to connect with external wires.
[0003] However, traditional lead frames use an 8-row x 40-column product unit structure, and one lead frame can only encapsulate 320 products. This results in low product density, low material utilization, and low hourly output for the equipment during the molding and lead cutting processes. Summary of the Invention
[0004] This invention addresses the shortcomings of existing technologies by providing a lead frame structure that improves material utilization and equipment efficiency. It employs a product unit structure with 14 rows and 72 columns, allowing one lead frame to encapsulate 1008 products, resulting in higher product density and improved material utilization. Furthermore, it enhances equipment efficiency in the molding and lead cutting processes.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A lead frame structure for improving material utilization and equipment efficiency includes a frame substrate on which a plurality of product units are arranged in a matrix. The length of the frame substrate is 309.96 mm ± 0.102 mm, the width of the frame substrate is 100.00 mm ± 0.051 mm, and there are 1008 product units. The product units are arranged in 14 rows along the width direction of the frame substrate and in 72 columns along the length direction of the frame substrate.
[0007] By setting a product unit structure of 14 rows and 72 columns on a frame substrate with a length of 309.96mm ± 0.102mm and a width of 100.00mm ± 0.051mm, the prepared leadframes are produced using an automated molding process. One mold can encapsulate 1008x2=2016 products (one mold is 2 leadframes), and the equipment can produce 161.28kpcs of products per hour, increasing UPH by 180%. In the lead cutting process, the equipment can produce 252kpcs of products per hour, increasing UPH by 119.13%, resulting in higher production efficiency. In terms of material utilization, due to the high density of the leadframes, approximately 23534kpcs of products can be produced per ton of copper (1kpcs = 1000 units), increasing the output per ton of copper by 70.73%, thus improving material utilization.
[0008] In one embodiment, all of the product units occupy more than 54% of the total area of the frame substrate.
[0009] In one embodiment, every four columns of the product units constitute a product unit group, and an injection runner is provided between two adjacent product unit groups.
[0010] In one embodiment, the thickness of the frame substrate is 0.152 mm ± 0.008 mm.
[0011] Compared with the prior art, this utility model has significant advantages and beneficial effects. Specifically, by setting a product unit structure of 14 rows and 72 columns on a frame substrate with a length of 309.96mm ± 0.102mm and a width of 100.00mm ± 0.051mm, the prepared lead frame is produced by an automatic molding process. One mold can encapsulate 1008x2=2016 products (one mold is 2 lead frames), and the equipment can produce 161.28kpcs of products per hour, increasing UPH by 180%. In the lead cutting process, the equipment can produce 252kpcs of products per hour, increasing UPH by 119.13%, resulting in higher production efficiency. In terms of material utilization, due to the high density of the lead frame, approximately 23534kpcs of products can be produced per ton of copper (1kpcs = 1000 units), increasing the output per ton of copper by 70.73%, thus improving material utilization.
[0012] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description
[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0014] Figure 2 This is a partial schematic diagram of an embodiment of the present utility model.
[0015] Explanation of reference numerals in the attached diagram:
[0016] 10-Frame substrate, 11-Product unit, 12-Product unit group, 13-Injection channel. Detailed Implementation
[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0019] like Figure 1-2 As shown, this utility model discloses a lead frame structure that improves material utilization and equipment efficiency, including a frame substrate 10, on which a plurality of product units 11 are arranged in a matrix.
[0020] There are 1008 product units 11. The product units 11 are arranged in 14 rows along the width direction of the frame substrate 10 and in 72 columns along the length direction of the frame substrate 10. All the product units 11 occupy more than 54% of the total area of the frame substrate 10.
[0021] Every four columns of the product units 11 form a product unit group 12, and an injection runner 13 is provided between two adjacent product unit groups 12.
[0022] The length A of the frame substrate 10 is 309.96 mm ± 0.102 mm.
[0023] The width B of the frame substrate 10 is 100.00mm ± 0.051mm.
[0024] The thickness of the frame substrate 10 is 0.152mm ± 0.008mm.
[0025] In summary, this utility model, by setting a product unit 11 structure with 14 rows and 72 columns on a frame substrate 10 with a length of 309.96mm ± 0.102mm and a width of 100.00mm ± 0.051mm, produces lead frames that can be manufactured using an automated molding process. One mold can encapsulate 1008 x 2 = 2016 products (one mold consists of 2 lead frames), and the equipment can produce 161.28kpcs of products per hour, increasing UPH by 180%. In the lead cutting process, the equipment can produce 252kpcs of products per hour, increasing UPH by 119.13%, resulting in higher production efficiency. In terms of material utilization, due to the high density of the lead frames, approximately 23534kpcs of products can be produced per ton of copper (1kpcs = 1000 units), increasing the output per ton of copper by 70.73%, thus improving material utilization.
[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technical aspects of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A lead frame structure for improving material utilization and equipment efficiency, comprising a frame substrate, wherein a plurality of product units are arranged in a matrix on the frame substrate, and characterized in that: the length of the frame substrate is 309.96 mm ± 0.102 mm, the width of the frame substrate is 100.00 mm ± 0.051 mm, the product units are 1008 in number, the product units are arranged in 14 rows along the width direction of the frame substrate, the product units are arranged in 72 columns along the length direction of the frame substrate, the total area of all the product units accounts for more than 54% of the frame substrate, the thickness of the frame substrate is 0.152 mm ± 0.008 mm, every four columns of the product units form a product unit group, and an injection molding runner is arranged between two adjacent product unit groups.