CN208507663U - A kind of lead frame - Google Patents
A kind of lead frame Download PDFInfo
- Publication number
- CN208507663U CN208507663U CN201821235263.0U CN201821235263U CN208507663U CN 208507663 U CN208507663 U CN 208507663U CN 201821235263 U CN201821235263 U CN 201821235263U CN 208507663 U CN208507663 U CN 208507663U
- Authority
- CN
- China
- Prior art keywords
- slide glass
- muscle
- connects
- lead frame
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- Joining Of Glass To Other Materials (AREA)
Abstract
The utility model category technical field of semiconductor encapsulation, and in particular to a kind of lead frame, including slide glass, pin, slide glass connect muscle.The width that wherein slide glass connects muscle is gradually widened with the gap size between the pin of arranged on left and right sides, and designs in asymmetrical shape.The utility model enhances slide glass and connects rigidity of soft tissues degree, can effectively prevent and slide glass inclination, offset occur in lead frame production, advantageously ensure that product quality, improve yields and production efficiency, reduce cost of goods manufactured.
Description
Technical field
A kind of the utility model category technical field of semiconductor encapsulation, and in particular to lead frame.
Background technique
Lead frame is base components important in electronics and information industry.Core of the lead frame as semiconductor integrated circuit
Piece carrier is realized the electrical connection of chip internal circuits exit and outer lead by means of bonding gold wire, is to form electric loop
Key structure part, play the function served as bridge connecting with outer lead.Lead frame is being produced and is being encapsulated in use process, due to
The strength of materials is low, it is easy to which the problems such as causing pin offset deformation, slide glass inclination, slide glass offset to product quality and is produced into
Product rate influences very big.
Summary of the invention
To solve the above problems, the utility model provides a kind of slide glass, to connect rigidity of soft tissues degree high, can prevent slide glass from deviating, effectively mention
The lead frame of high yield quality and production efficiency.
Technical solution:
A kind of lead frame, including slide glass, pin, slide glass connect muscle, and wherein the middle position of the bottom and upper segment of slide glass is each
The slide glass for being connected with a longitudinal direction connects muscle, it is characterised in that: the width that the slide glass connects muscle designs for non-equivalent, and with from load
For piece by closely to remote, slide glass connects incrementally increasing for gap between the pin of muscle arranged on left and right sides, gradually increases the width that slide glass connects muscle,
And slide glass connects muscle and designs in left and right asymmetrical shape.
In lead frame sheet stock production process, it is connected by bottom muscle with middle muscle between adjacent frame unit, it is each
A frame unit includes that slide glass, interior pin, outer pin, middle muscle, slide glass connect muscle, frame, and slide glass connects muscle and is connected with slide glass for holding
Connect chip.It is lead frame for high foot, since pins of products number density is high, the pin knot in the case where material thickness is certain
Structure becomes elongated, and stability weakens, and is easy to appear offset deformation and other issues.Existing slide glass is connected muscle and is generally set using wide
Meter, or connect the symmetrical shape design of flaccidity of tendon and muscle axis along slide glass.Using above-mentioned slide glass connect muscle width non-equivalent design and it is asymmetric
After shape design, slide glass, which will connect rigidity of soft tissues degree, to be improved significantly, and the increase that slide glass connects muscle width increases frame surface area, make to rush
Sanction process increases binder area, because the stress that materials variances is deformed reduces, slide glass can be effectively prevent to shift.
The utility model has the advantages that
The utility model connects the design of muscle shape using asymmetric slide glass, enhances slide glass and connects rigidity of soft tissues degree, can effectively prevent and draw
Slide glass inclination, offset occur in wire frame production, advantageously ensures that product quality, improves yields and production efficiency, reduces and produces
Product manufacturing cost, the thin material, wide material, elongate pins for being particularly suitable for 0.127mm, 0.152mm, 0.203mm, 0.254mm thickness draw
The design of wire frame produces.
Detailed description of the invention
The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is existing lead frame structure schematic diagram.
Fig. 2 is the B- partial enlarged view of Fig. 1.
Fig. 3 is the utility model structure diagram.
Fig. 4 is the A- partial enlarged view of Fig. 3.
Fig. 5 is the utility model lead frame sheet stock structural schematic diagram.
Specific embodiment
As shown in Figure 1 to Figure 2, the slide glass of existing lead frame connects muscle 2 generally using wide design, or connects flaccidity of tendon and muscle along slide glass
The symmetrical design of axis.
As shown in Figures 3 to 5, the utility model includes that slide glass 1, pin 3, slide glass connect muscle 2, the bottom and upper segment of slide glass 1
Middle position be respectively connected with the slide glass of a longitudinal direction and connect muscle 2, the width that slide glass connects muscle 2 designs for non-equivalent, and with from load
For piece by closely to remote, slide glass connects incrementally increasing for gap between the pin 3 of 2 arranged on left and right sides of muscle, gradually increases the width that slide glass connects muscle 2
Degree, and slide glass connects muscle 2 and designs in left and right asymmetrical shape.
Claims (1)
1. a kind of lead frame, including slide glass, pin, slide glass connect muscle, wherein the middle position of the bottom and upper segment of slide glass respectively connects
The slide glass for being connected to a longitudinal direction connects muscle, it is characterised in that: the width that the slide glass connects muscle designs for non-equivalent, and with from slide glass
By closely to remote, slide glass connects incrementally increasing for gap between the pin of muscle arranged on left and right sides, gradually increases the width that slide glass connects muscle, and
And slide glass connects muscle and designs in left and right asymmetrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235263.0U CN208507663U (en) | 2018-07-26 | 2018-07-26 | A kind of lead frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235263.0U CN208507663U (en) | 2018-07-26 | 2018-07-26 | A kind of lead frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507663U true CN208507663U (en) | 2019-02-15 |
Family
ID=65299513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821235263.0U Active CN208507663U (en) | 2018-07-26 | 2018-07-26 | A kind of lead frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208507663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044519A (en) * | 2019-04-25 | 2019-07-23 | 天水华洋电子科技股份有限公司 | A kind of lead frame copper strip stress test method |
-
2018
- 2018-07-26 CN CN201821235263.0U patent/CN208507663U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044519A (en) * | 2019-04-25 | 2019-07-23 | 天水华洋电子科技股份有限公司 | A kind of lead frame copper strip stress test method |
| CN110044519B (en) * | 2019-04-25 | 2020-12-18 | 天水华洋电子科技股份有限公司 | Lead frame copper strip stress testing method |
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