CN-224205645-U - High-stability lead frame structure

CN224205645UCN 224205645 UCN224205645 UCN 224205645UCN-224205645-U

Abstract

The utility model discloses a high-stability lead frame structure which comprises a frame main body, wherein the frame main body comprises an upper edge rib, a lower edge rib and a plurality of vertical ribs, a glue blocking connecting rib is arranged on the side face of each vertical rib in a vertical mode, a plurality of packaging units which are arranged in the same column are arranged on the side face of each vertical rib, a first pin fixing position, a second pin fixing position and a third pin fixing position which are distributed in a delta shape are arranged in the packaging units, the second pin fixing position and the third pin fixing position are connected to the glue blocking connecting rib through first connecting ribs, and the first pin fixing positions in the same column packaging units are connected in series through second connecting ribs which are arranged in a vertical mode and are connected to the upper edge rib and the lower edge rib. According to the utility model, the first pin fixing position is directly connected to the frame through the second connecting rib, the connecting rib is not required to be supported to the glue-blocking connecting rib, deformation caused by bending or gravity due to overlong and too thin connecting rib is avoided, and the stability is improved.

Inventors

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Assignees

浙江恒拓电子科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250506

Claims (5)

1. A high-stability lead frame structure comprises a frame main body, wherein the frame main body comprises an upper edge rib, a lower edge rib and a plurality of vertical ribs, each vertical rib is provided with a glue blocking connecting rib in vertical arrangement on the side face, a plurality of packaging units in same column arrangement are arranged on the side face of each vertical rib, a first pin fixing position, a second pin fixing position and a third pin fixing position which are distributed in a delta shape are arranged in the packaging units, the second pin fixing position and the third pin fixing position are connected to the glue blocking connecting ribs through first connecting ribs, and the high-stability lead frame structure is characterized in that the first pin fixing positions in the same column packaging units are connected in series through second connecting ribs in vertical arrangement and connected to the upper edge rib and the lower edge rib.
2. The leadframe structure of claim 1, wherein the first lead fixing portions of the intermediate package units are connected to the first lead fixing portions of the adjacent package units by second connecting bars at both ends thereof.
3. The lead frame structure of claim 2, wherein in the package units at the edge positions, one end of the first pin fixing position is connected with the first pin fixing position of the adjacent package units through the second connecting rib, and the other end of the first pin fixing position is connected with the upper edge rib or the lower edge rib through the second connecting rib.
4. The high stability lead frame structure of claim 1, wherein the first pin fixing portion and the second connecting rib are integrally formed, and the second connecting rib and the glue-blocking connecting rib are parallel to each other and are connected to the upper rim and the lower rim.
5. The high-stability lead frame structure of claim 1, wherein the second connecting ribs and the glue-blocking connecting ribs on two sides of the first pin fixing position are located outside the black glue plastic packaging area, namely a cutting area in the rib cutting process.

Description

High-stability lead frame structure Technical Field The utility model relates to the technical field of semiconductor packaging, in particular to a high-stability lead frame structure. Background In the field of electronic component packaging, the stability and space utilization of a frame structure directly affect product performance and application range. In the prior art, the following technical problems exist in the traditional framework: 1. The existing frame is provided with three pin fixing positions distributed in a delta shape as shown in fig. 5 and 6, wherein the three pin fixing positions are respectively a first pin fixing position A61, a second pin fixing position B62 and a third pin fixing position C63, and the three pin fixing positions are connected to the glue blocking connecting rib 4 through connecting ribs, wherein the first pin fixing position A61 is far away from the glue blocking connecting rib 4, a longer connecting rib 64 is required to stretch out to connect the glue blocking connecting rib 4, the longer connecting rib 64 also means to be easily bent and easily deformed due to gravity, the second pin fixing position B62 and the third pin fixing position C63 also need to be the connecting rib of the first pin fixing position A61, so that the area of the second pin fixing position B62 and the area of the third pin fixing position C63 are reduced, a large-size chip cannot be adapted, and once the large-size chip needs to be enlarged, and the space pressure of the circuit board is increased. 2. The supporting points of the existing frame are concentrated on the glue-blocking connecting ribs, and in the subsequent processing procedure, the pin fixing positions are easy to deform, so that the stability of the production process and the quality of products are affected. Disclosure of utility model In order to solve the problems, the utility model provides a high-stability lead frame structure, which solves the problems that a pin fixing position is easy to deform and cannot be matched with a large chip in the prior art. The high-stability lead frame structure comprises a frame main body, wherein the frame main body comprises an upper edge rib, a lower edge rib and a plurality of vertical ribs, a glue blocking connecting rib is arranged on the side face of each vertical rib in a vertical mode, a plurality of packaging units which are arranged in the same row are arranged on the side face of each vertical rib, a first pin fixing position, a second pin fixing position and a third pin fixing position which are distributed in a delta shape are arranged in the packaging units, the second pin fixing position and the third pin fixing position are connected to the glue blocking connecting rib through first connecting ribs, and the first pin fixing positions in the same row of packaging units are connected in series through second connecting ribs which are arranged in a vertical mode and are connected to the upper edge rib and the lower edge rib. On the basis of the scheme and as a preferable scheme of the scheme, in the packaging unit at the middle position, two ends of the first pin fixing position are connected with the first pin fixing positions of the adjacent packaging units through the second connecting ribs. In the packaging unit at the edge position, one end of the first pin fixing position is connected with the first pin fixing position of the adjacent packaging unit through the second connecting rib, and the other end of the first pin fixing position is connected with the upper edge rib or the lower edge rib through the second connecting rib. On the basis of the scheme and as a preferable scheme of the scheme, the first pin fixing position and the second connecting rib are integrally processed and formed, and the second connecting rib and the glue-resisting connecting rib are parallel to each other and are connected to the upper side rib and the lower side rib. On the basis of the scheme and as the preferable scheme of the scheme, the second connecting ribs and the glue-blocking connecting ribs on two sides of the first pin fixing position are positioned outside the black glue plastic packaging region, namely the cutting region in the rib cutting process. Compared with the prior art, the utility model has the beneficial effects that: 1. The first pin fixing position is directly connected to the frame through the second connecting ribs, the second connecting ribs do not need to be supported to the glue blocking connecting ribs, the second connecting ribs do not interfere other parts, the thickness of the second connecting ribs can be set according to requirements, bending or deformation caused by gravity due to overlong and too thin connecting ribs is avoided, and stability is improved. 2. After the connecting ribs of the first pin fixing positions do not need to pass through the second pin fixing positions and the third pin fixing positions, the areas of the second pin fixing positions a