CN2473747Y - Silver-tin composite LED leading wire frame - Google Patents
Silver-tin composite LED leading wire frame Download PDFInfo
- Publication number
- CN2473747Y CN2473747Y CN01239755U CN01239755U CN2473747Y CN 2473747 Y CN2473747 Y CN 2473747Y CN 01239755 U CN01239755 U CN 01239755U CN 01239755 U CN01239755 U CN 01239755U CN 2473747 Y CN2473747 Y CN 2473747Y
- Authority
- CN
- China
- Prior art keywords
- thickness
- film
- led lead
- micron
- silver
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Led Device Packages (AREA)
Abstract
The utility model discloses a structure of LED lead frame, particularly a LED lead frame utilized by silver tin composition. The main structural characteristic is that the silver film used in original frame is replaced by tin film used at lower part of the frame middle bar, which reduces production cost and improves the welding performance of LED lead.
Description
The utility model relates to a kind of structure of LED lead frame, particularly a kind of compound LED lead frame of silver-colored tin that adopts.
The LED lead frame is intermediate products of making the LED light-emitting component, makes earlier to load onto luminous component at framework upper again behind the framework and promptly can be made into single LED light-emitting component, according to different purposes the LED light-emitting component is used for different places.LED lead frame commonly used is to plate one deck silver again on the copper-plated basis of whole framework, because silver is noble metal, production cost is higher, and the welding performance of silver is relatively poor.
It is low that the purpose of this utility model provides a kind of production cost, and good welding performance adopts the LED lead frame of silver-colored tin composite construction.
The purpose of this utility model is achieved in that a kind of composite Ag-Sn LED lead frame, comprise technology limit 1, be uniform-distribution with LED lead-in wire 2 on the technology limit 1, on LED lead-in wire 2, be fixed with muscle 3 in the framework, outside whole frame body 8, be coated with copper film 4, be coated with nickel film 5 outside the copper film 4 on muscle 3 tops in framework, nickel film 5 is outer to be silverskin 6, is coated with tin film 7 outside the copper film 4 in framework in the muscle 3 times.The thickness of copper film 4 is the 0.5-1.5 micron, and the thickness of nickel film 5 is the 1.5-2.5 micron, and the thickness of silverskin 6 is the 2.5-3.5 micron, and tin film 7 thickness are the 3.5-4.5 micron.The thickness that plated film optimum thickness of the present utility model is a copper film 4 is 1 micron, and the thickness of nickel film 5 is 2 microns, and the thickness of silverskin 6 is 5 microns, and the thickness of tin film 7 is 4 microns.
Composite Ag-Sn LED lead frame provided by the utility model because zinc-plated structure has been adopted in the muscle bottom in framework, has reduced production cost, and the welding performance of tin is better than silver, the welding of being more convenient for.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the enlarged drawing of the local A of Fig. 1.
The utility model adopts following structure: a kind of composite Ag-Sn LED lead frame, comprise technology limit 1, be uniform-distribution with LED lead-in wire 2 on the technology limit 1, on LED lead-in wire 2, be fixed with muscle 3 in the framework, outside whole frame body 8, be coated with copper film 4, be coated with nickel film 5 outside the copper film 4 on muscle 3 tops in framework, nickel film 5 is outer to be silverskin 6, is coated with tin film 7 outside the copper film 4 in framework in the muscle 3 times.The thickness of copper film 4 is the 0.5-1.5 micron, and the thickness of nickel film 5 is the 1.5-2.5 micron, and the thickness of silverskin 6 is the 2.5-3.5 micron, and the thickness of tin film 7 is the 3.5-4.5 micron.
When the utility model is made, whole frame body 3 adopts punching press to make, whole copper plating film 4 on the framework 3, thickness is the 0.5-1.5 micron, copper film plates good back muscle 3 top plated nickel films 5 in framework, the thickness of nickel film 5 is the 1.5-2.5 micron, silver-plated film 6 outside nickel film 5 then, and the thickness of silverskin 6 is the 2.5-3.5 micron; Tin-plated coating film 7 outside the copper film 4 of muscle 3 bottoms in framework, the thickness of tin film 7 is the 3.5-4.5 micron.
The thickness that plated film optimum thickness of the present utility model is a copper film 4 is 1 micron, and the thickness of nickel film 5 is 2 microns, and the thickness of silverskin 6 is 5 microns, and the thickness of tin film 7 is 4 microns.
Claims (3)
1, a kind of composite Ag-Sn LED lead frame, comprise technology limit (1), be uniform-distribution with LED lead-in wire (2) on the technology limit (1), on LED lead-in wire (2), be fixed with muscle in the framework (3), outside whole frame body (8), be coated with copper film (4), it is characterized in that: be coated with nickel film (5) outside the copper film (4) on muscle in framework (3) top, nickel film (5) is silverskin (6) outward, is coated with tin film (7) outside the copper film (4) during muscle in framework (3) is following.
2, composite Ag-Sn LED lead frame according to claim 1, it is characterized in that: the thickness of copper film (4) is the 0.5-15 micron, the thickness of nickel film (5) is the 1.5-2.5 micron, and the thickness of silverskin (6) is the 2.5-3.5 micron, and the thickness of tin film (7) is the 3.5-4.5 micron.
3, composite Ag-Sn LED lead frame according to claim 1 and 2 is characterized in that: the thickness of copper film (4) is 1 micron, and the thickness of nickel film (5) is 2 microns, and the thickness of silverskin (6) is 3 microns, and the thickness of tin film (7) is 4 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01239755U CN2473747Y (en) | 2001-04-11 | 2001-04-11 | Silver-tin composite LED leading wire frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01239755U CN2473747Y (en) | 2001-04-11 | 2001-04-11 | Silver-tin composite LED leading wire frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473747Y true CN2473747Y (en) | 2002-01-23 |
Family
ID=33652127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01239755U Expired - Fee Related CN2473747Y (en) | 2001-04-11 | 2001-04-11 | Silver-tin composite LED leading wire frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473747Y (en) |
-
2001
- 2001-04-11 CN CN01239755U patent/CN2473747Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |