CN206401313U - It is a kind of to strengthen the lead frame structure that pin resists outer force deformation - Google Patents
It is a kind of to strengthen the lead frame structure that pin resists outer force deformation Download PDFInfo
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- CN206401313U CN206401313U CN201621479216.1U CN201621479216U CN206401313U CN 206401313 U CN206401313 U CN 206401313U CN 201621479216 U CN201621479216 U CN 201621479216U CN 206401313 U CN206401313 U CN 206401313U
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- pin
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- lead frame
- etching
- middle muscle
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Abstract
The utility model is related to the lead frame structure that a kind of enhancing pin resists outer force deformation, and it includes multiple lead frame units（1）, two neighboring lead frame unit（1）Between pass through middle muscle（3）It is connected, each lead frame unit（1）Include two row pin arrays of left and right（2）, the pin array（2）Pin include pin metal solid（2.1）With pin half-etching metallic region（2.2）, two row pin arrays of the left and right（2）Pin metal solid（2.1）Muscle is connected by half-etching respectively（4）With the middle muscle of the left and right sides（3）It is connected, the middle muscle（3）Including middle muscle metal solid（3.1）With middle muscle half-etching metallic region（3.2）, the half-etching connects muscle（4）With middle muscle half-etched regions（3.2）It is connected, positioned at lead frame unit（1）The pin metal solid in four corners（2.1）Respectively with the middle muscle of both sides up and down（3）Muscle is connected by half-etching（4）It is connected.The utility model is a kind of to strengthen the lead frame structure that pin resists outer force deformation, it can effective reinforced frame intensity, the outer force deformation of enhancing resistance, and reduce and cut tool and be lost.
Description
Technical field
The utility model is related to the lead frame structure that a kind of enhancing pin resists outer force deformation, belongs to semiconductor packages skill
Art field.
Background technology
DFN（Duad Flat No-lead Package, flat no-lead packages）, it is one of surface mount packages, is in
Square or rectangle, as shown in figure 1, package bottom（That is lead frame unit 1）The row of left and right two are configured with pin array 2, current nothing
The pin of the row configuration of base island DFN frame units or so two only connects muscle 4 by half-etching with the middle muscle of the right and left and is connected, so
And, the pin for being configured at four corners of lead frame unit is not connected with the middle muscle 4 on both sides up and down, that is to say, that pin array 2
By the right and left being connected middle muscle to its interaction force.Therefore, in molding encapsulation, when mould stream direction and diagram
When direction is consistent, the pin of island-free DFN frame units both sides configuration（Especially it is arranged in drawing for four corners of lead frame unit
Pin）It can offset and deform along mould stream direction by mould flowing pressure（I.e. pin rushes curved）, cause product appearance bad.After encapsulating by
In pin offset deformation, in follow-up cutting, pin is easily cut to, increases the loss of cutting tool.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of enhancing pin for above-mentioned prior art to resist outer
The lead frame structure of force deformation, it can effectively strengthen pin resistance permanent deformation and fracture energy, and reduce cutter
Loss.
The technical scheme in the invention for solving the above technical problem is：A kind of pin that strengthens resists drawing for outer force deformation
Wire frame structure, it includes by middle muscle being connected between multiple lead frame units, two neighboring lead frame unit, each lead
Frame unit includes two row pin arrays of left and right, and the row pin array of left and right two is connected in muscle and the left and right sides by half-etching respectively
Muscle is connected, and the pin of the pin array includes pin metal solid and pin half-etching metallic region, and the middle muscle includes
Middle muscle metal solid and middle muscle half-etching metallic region, the half-etching connect muscle and are connected with middle muscle half-etched regions, positioned at drawing
The pin in four corners of wire frame unit connects muscle by half-etching with the middle muscle of both sides up and down respectively and is connected.
Compared with prior art, the utility model has the advantage of：
The utility model is a kind of to strengthen the lead frame structure that pin resists outer force deformation, by will be located at lead frame unit
The pin in four corners connects muscle by half-etching with the middle muscle on both sides up and down respectively and is connected, in molding encapsulation, can increase on
The middle muscle on lower both sides is to the fixation of pin, the intensity of reinforced frame pin, it is to avoid pin is offset deformation by mould flowing pressure,
Lift product appearance quality.Meanwhile, in subsequently cutting processing procedure, it is to avoid cutting tool switches to pin, reduce the damage of cutting tool
Consumption.
Brief description of the drawings
Fig. 1 is the structural representation of existing flat no-lead packages.
Fig. 2, which is that the utility model is a kind of, strengthens the schematic diagram that pin resists the lead frame structure of outer force deformation.
Wherein：
Lead frame unit 1
Pin array 2
Pin metal solid 2.1
Pin half-etching metallic region 2.2
Middle muscle 3
Middle muscle metal solid 3.1
Middle muscle half-etching metallic region 3.2
Half-etching connects muscle 4.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Fig. 2 a kind of enhancing pin in the present embodiment resists the lead frame structure of outer force deformation, it includes many
It is connected between individual lead frame unit 1, two neighboring lead frame unit 1 by middle muscle 3, each lead frame unit 1 includes a left side
Right two row pin arrays 2, the pin of the pin array 2 includes pin metal solid 2.1 and pin half-etching metallic region
2.2, the pin metal solid 2.1 of two row pin arrays 2 of the left and right connects the middle muscle of muscle 4 and the left and right sides by half-etching respectively
3 are connected, the middle muscle 3 include middle muscle metal solid 3.1 and middle muscle half-etching metallic region 3.2, the half-etching connect muscle 4 with
Middle muscle half-etched regions 3.2 are connected, and the pin metal solid 2.1 positioned at 1 four corners of lead frame unit is respectively with up and down two
The middle muscle 3 of side connects muscle 4 by half-etching and is connected.
In addition to the implementation, the utility model also includes other embodiment, all use equivalents or equivalent
The technical scheme of substitute mode formation, all should fall within the utility model scope of the claims.
Claims (1)
1. a kind of strengthen the lead frame structure that pin resists outer force deformation, it is characterised in that：It includes multiple lead frame units
（1）, two neighboring lead frame unit（1）Between pass through middle muscle（3）It is connected, each lead frame unit（1）Include left and right two
Row pin array（2）, the pin array（2）Pin include pin metal solid（2.1）With pin half-etching metallic region
（2.2）, two row pin arrays of the left and right（2）Pin metal solid（2.1）Muscle is connected by half-etching respectively（4）With left and right two
The middle muscle of side（3）It is connected, the middle muscle（3）Including middle muscle metal solid（3.1）With middle muscle half-etching metallic region（3.2）,
The half-etching connects muscle（4）With middle muscle half-etched regions（3.2）It is connected, positioned at lead frame unit（1）The pin in four corners
Metal solid（2.1）Respectively with the middle muscle of both sides up and down（3）Muscle is connected by half-etching（4）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621479216.1U CN206401313U (en) | 2016-12-30 | 2016-12-30 | It is a kind of to strengthen the lead frame structure that pin resists outer force deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621479216.1U CN206401313U (en) | 2016-12-30 | 2016-12-30 | It is a kind of to strengthen the lead frame structure that pin resists outer force deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206401313U true CN206401313U (en) | 2017-08-11 |
Family
ID=59516624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621479216.1U Active CN206401313U (en) | 2016-12-30 | 2016-12-30 | It is a kind of to strengthen the lead frame structure that pin resists outer force deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206401313U (en) |
-
2016
- 2016-12-30 CN CN201621479216.1U patent/CN206401313U/en active Active
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