High-density DFN1006 lead frame

Abstract

The utility model discloses a high-density DFN1006 lead frame, and belongs to the technical field of integrated circuits. The mold comprises a whole frame, the whole frame is provided with a first large unit and a second large unit which are arranged at intervals, air holes penetrating through the whole frame are formed between the first large unit and the second large unit, and a plurality of first small units are longitudinally and transversely arranged in the first large unit; the first small units in the transverse direction of the whole frame are connected through first connecting ribs. A plurality of second small units are longitudinally and transversely arranged in the second large unit, and the second small units in the transverse direction of the whole frame are connected through second connecting ribs. The method has the beneficial effects that materials can be more fully used, and waste of the materials is reduced; the connecting ribs are added to improve the overall strength of the frame, the problem that materials are weak and prone to deformation in the production process is solved, and the overall yield of products is improved; and the seat column is designed into a double-half-corrosion area, so that the strength of the product is enhanced, and the deformation problem of each small unit in the production process is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of integrated circuits, and in particular relates to a high-density DFN1006 lead frame. Background Art

[0002] With the rapid development of smart phones, ultra-thin mobile phones have gradually become the mainstream choice in the market. Mobile phones produced by well-known mobile phone manufacturers such as Huawei, Oppo, Xiaomi, and Apple are all developing towards the trend of ultra-thinness, and ultra-thin mobile phones will lead the mobile phone fashion. Compared with traditional SMD devices, DFN devices can be thinner and smaller in size, and their application advantages in ultra-thin mobile phones are more obvious.

[0003] As for the common diode package DFN1006 used for ESD (Electro-Static discharge) protection in mobile phone motherboards, ultra-thinness is its basic attribute. At the same time, large demand and single function are also the significant characteristics of this product. This feature determines that this product needs to be ultra-thin and low-cost and highly reliable. DFN1006 package is the most important package type in the DFN area and is widely used in the field of electrostatic protection of smart phones. The lead frame is one of its important components, mainly used for heat dissipation and signal transmission, and the demand is gradually increasing.

[0004] like Figure 1 As shown, the existing DFN1006 lead frame, it can be seen that the existing DFN1006 lead frame product arrangement is small in number and the arrangement is relatively loose, not only the material utilization rate is relatively low, but also the production efficiency is low, which cannot meet the existing market demand for DFN1006 lead frames. Utility Model Content

[0005] The purpose of the embodiment of the present application is to provide a high-density DFN1006 lead frame, which can solve the technical problems of existing DFN1006 lead frame products, such as small number of arrangements, loose arrangement, low material utilization, high material cost, and easy deformation and lateral bending during production, which seriously affect product production efficiency.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] An embodiment of the present application provides a high-density DFN1006 lead frame, including a frame as a whole, on which a first large unit and a second large unit are arranged at intervals, an air vent that penetrates the frame as a whole is provided between the first large unit and the second large unit, a plurality of first small units are arranged vertically and horizontally in the first large unit, and the first small units in the lateral direction of the frame as a whole are connected by first connecting ribs; a plurality of second small units are arranged vertically and horizontally in the second large unit, and the second small units in the lateral direction of the frame as a whole are connected by second connecting ribs.

[0008] As a preferred improvement of the present invention, a plurality of positioning holes are respectively provided on the upper and lower sides of the overall frame.

[0009] As a preferred improvement of the present invention, the positioning holes include positioning circular holes and positioning elliptical holes.

[0010] As a preferred improvement of the present invention, the back of the entire frame is also provided with an anti-fool frame for preventing the tape from being offset during pasting.

[0011] As a preferred improvement of the present invention, the fool-proofing frame includes a first fool-proofing frame, a second fool-proofing frame and a third fool-proofing frame arranged on the upper side of the frame as a whole, and a fourth fool-proofing frame, a fifth fool-proofing frame and a sixth fool-proofing frame arranged on the lower side of the frame as a whole.

[0012] As a preferred improvement of the present invention, a first notch and a second notch for facilitating the removal of the adhesive tape are respectively provided on the left and right sides of the frame as a whole.

[0013] As a preferred improvement of the present invention, the lengths of the first large unit and the second large unit are both 124 mm, and the widths are both 68 mm.

[0014] As a preferred improvement of the present invention, the first large unit includes 56 rows and 154 columns of the first small units; the second large unit includes 56 rows and 154 columns of the second small units.

[0015] As a preferred improvement of the present invention, the first small unit includes a small unit front and a small unit back arranged opposite to the small unit front, the small unit front includes a front base island and silver plating arranged on the surface of the front base island; the small unit back includes a back half-etched area, a back base island and a first seat column and a second seat column connected to the connecting rib.

[0016] As a preferred improvement of the present invention, the high-density DFN1006 lead frame has a length of 258 mm and a width of 78 mm.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] 1. The size of the lead frame is changed from 250mmX70mm to 258mmX78mm, which can make fuller use of materials and reduce material waste;

[0019] 2. By changing from three large units to two large units, one row of injection holes is reduced, increasing the overall number of frames;

[0020] 3. By adding connecting ribs between the small units in the lateral direction of the frame as a whole, the overall strength of the frame is improved, the problem of weak and easy deformation of materials during the production process is reduced, and the overall yield of the product is improved;

[0021] 4. The seat column connected to the connecting rib in the longitudinal direction of each small unit is designed as a double half-eclipse area to enhance the strength of the product and reduce the deformation problem of each small unit caused by the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 It is a structural schematic diagram of an existing DFN1006 lead frame;

[0024] Figure 2 This is a schematic diagram of the overall structure of the high-density DFN1006 lead frame provided by the utility model;

[0025] Figure 3 A schematic diagram of the structure of the first large unit of the high-density DFN1006 lead frame provided by the utility model;

[0026] Figure 4 A schematic structural diagram of the front side of the first small unit of the high-density DFN1006 lead frame provided by the utility model;

[0027] Figure 5 This is a schematic structural diagram of the back side of the first small unit of the high-density DFN1006 lead frame provided by the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0030] See also Figures 1 to 5 As shown, an embodiment of the present application provides a high-density DFN1006 lead frame, including a frame as a whole 1, on which a first large unit 131 and a second large unit 312 are arranged at intervals, and between the first large unit 131 and the second large unit 312, a ventilation hole 14 is provided that passes through the frame as a whole 1. By adopting a structure with two large units, a column of glue injection holes can be reduced, thereby increasing the number of frame as a whole.

[0031] The first large unit 131 and the second large unit 132 are both 124 mm in length and 68 mm in width.

[0032] A plurality of first small units 1311 are arranged vertically and horizontally in the first large unit 131 , and the first small units 1311 in the lateral direction of the frame as a whole 1 are connected by first connecting ribs 1313 , thereby improving the overall strength of the frame.

[0033] A plurality of second small units 1321 are arranged vertically and horizontally in the second large unit 132 , and the second small units along the lateral direction of the frame body 1 are connected by second connecting ribs (not numbered).

[0034] A plurality of positioning holes are respectively provided on the upper and lower sides of the frame as a whole 1 . Specifically, the positioning holes include a positioning circular hole 11 and a positioning elliptical hole 12 .

[0035] The back of the frame 1 is also provided with an anti-fool frame for preventing the tape from being offset.

[0036] The fool-proofing frame includes a first fool-proofing frame 151, a second fool-proofing frame 152 and a third fool-proofing frame 153 arranged on the upper side of the frame as a whole 1, and a fourth fool-proofing frame 154, a fifth fool-proofing frame 155 and a sixth fool-proofing frame 156 arranged on the lower side of the frame as a whole 1.

[0037] The left and right sides of the frame 1 are respectively provided with a first notch 161 and a second notch 162 for facilitating the removal of the adhesive tape after plastic sealing.

[0038] The first large unit includes 56 rows and 154 columns of the first small units 1311 ; the second large unit includes 56 rows and 154 columns of the second small units 1321 .

[0039] The first small unit 1311 includes a small unit front side 13112 and a small unit back side arranged opposite to the small unit front side 13112, the small unit front side 13112 includes a front base island 131122 and a silver-plated layer 131121 arranged on the surface of the front base island 131122; the small unit back side includes a back half-etched area 131114, a back base island 131113 and a first seat column 131111 and a second seat column 131112 connected to the connecting rib 1313, and the seat column is designed as a double half-etched area to enhance the strength of the product and reduce the deformation problem of each small unit generated during the production process.

[0040] The high-density DFN1006 lead frame 1 has a length of 258 mm and a width of 78 mm, which can make fuller use of materials and reduce material waste.

[0041] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0042] In addition, it should be noted that the scope of the methods and systems in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0043] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A high-density DFN1006 lead frame, characterized in that: The invention comprises a frame as a whole, wherein a first large unit and a second large unit are arranged at intervals on the frame as a whole, an air vent which penetrates the frame as a whole is arranged between the first large unit and the second large unit, a plurality of first small units are arranged vertically and horizontally in the first large unit, and the first small units along the lateral direction of the frame as a whole are connected by first connecting ribs; a plurality of second small units are arranged vertically and horizontally in the second large unit, and the second small units along the lateral direction of the frame as a whole are connected by second connecting ribs.

2. The high-density DFN1006 lead frame according to claim 1, characterized in that: A plurality of positioning holes are respectively arranged on the upper and lower sides of the frame as a whole.

3. The high-density DFN1006 lead frame according to claim 2, characterized in that: The positioning holes include positioning circular holes and positioning elliptical holes.

4. The high-density DFN1006 lead frame according to claim 1, characterized in that: The back of the entire frame is also provided with an anti-fool frame for preventing the tape from being offset.

5. The high-density DFN1006 lead frame according to claim 4, characterized in that: The foolproof frame includes a first foolproof frame, a second foolproof frame and a third foolproof frame arranged on the upper side of the frame as a whole, and a fourth foolproof frame, a fifth foolproof frame and a sixth foolproof frame arranged on the lower side of the frame as a whole.

6. The high-density DFN1006 lead frame according to claim 1, characterized in that: The left and right sides of the frame are respectively provided with a first notch and a second notch for facilitating the removal of the adhesive tape.

7. The high-density DFN1006 lead frame according to claim 1, characterized in that: The length of the first largest unit and the second largest unit are both 124 mm, and the width are both 68 mm.

8. The high-density DFN1006 lead frame according to claim 1, characterized in that: The first large unit includes 56 rows and 154 columns of the first small units; the second large unit includes 56 rows and 154 columns of the second small units.

9. The high-density DFN1006 lead frame according to claim 8, characterized in that: The first small unit includes a small unit front and a small unit back arranged opposite to the small unit front, the small unit front includes a front base island and silver plating arranged on the surface of the front base island; the small unit back includes a back half-etched area, a back base island and a first seat column and a second seat column connected to the connecting rib.

10. The high-density DFN1006 lead frame according to claim 1, characterized in that: The high-density DFN1006 lead frame has a length of 258 mm and a width of 78 mm.

Images