CN200969355Y - Small power luminous diode - Google Patents
Small power luminous diode Download PDFInfo
- Publication number
- CN200969355Y CN200969355Y CNU2006200150921U CN200620015092U CN200969355Y CN 200969355 Y CN200969355 Y CN 200969355Y CN U2006200150921 U CNU2006200150921 U CN U2006200150921U CN 200620015092 U CN200620015092 U CN 200620015092U CN 200969355 Y CN200969355 Y CN 200969355Y
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- CN
- China
- Prior art keywords
- gold thread
- electrode sheet
- stent
- stent electrode
- low power
- 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
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Abstract
The utility model relates to a low power luminescent diode, which includes a flat plate stent (1), a wafer (2) and gold thread (3) as well as an external sealing colloid (4), the stent (1) includes a stent electrode tablet (11) and a platform (12) for supporting the wafer (2), the two ends of the gold thread (3) are respectively welded to the stent electrode tablet (11) and wafer electrode, two branches (111) with shape of Chinese character 'ba' extend to the said platform (12) at the two end angles of one end of the said stent electrode tablet (11), correspondingly this end of the said platform (12) is as circular arc line segment or multi-side segment to accord with the said stent electrode tablet (11). Compared to present technology, the low power luminescent diode of the utility model has the advantages of high stability, long service life, etc.
Description
Technical field the utility model relates to the photoemissive semiconductor device that is applicable to that has a jump in potential potential barrier or surface potential barrier at least, particularly relates to light-emitting diode.
Background technology prior art support be plate low power LED as shown in Figure 1, comprise bed type support 1 ', wafer 2 ' and gold thread 3 ' and outer adhesive body 4 ', described support 1 ' comprises stent electrode sheet 11 ' again and is used for the platform 12 ' of bearing wafer 2 ' that the two ends of described gold thread 3 ' are welded with stent electrode sheet 11 ' and chip electrode respectively.Described stent electrode sheet 11 ' and platform 12 ' two relative limits are straight flange, because stress problem, the direction that such structure makes outer adhesive body 4 ' and support 1 ' edge be parallel to described straight flange is easy to generate and relatively moves even break away from, and the steadiness of product is poor.Moreover; weld at gold thread and stent electrode; the prior art low power LED all only adopt bonding equipment with gold thread 3 ' pressure welding on stent electrode sheet 11 '; as shown in Figure 1; weld at gold thread 3 ' and stent electrode sheet 11 ' does not add any safeguard measure; can not guarantee that like this gold thread firmly is connected with stent electrode, the rosin joint situation is difficult to avoid.Also have; as shown in fig. 1; gold thread 3 ' between prior art LED wafer 2 ' electrode and the stent electrode sheet 11 ' is not almost reserved tensile elongation; because the coefficient of expansion of support, wafer, colloid epoxy resin and gold thread is different; and light-emitting diode is in use, the time regular meeting be in the hot environment, gold thread 3 ' is often being subjected to thermal shock after repeatedly being pullled like this; broken easily, useful life is short.
Utility model content the technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and proposes that a kind of steadiness is good, the low power LED of long service life.
The utility model solve the technical problem can be by realizing by the following technical solutions:
Design, use a kind of low power LED, comprise bed type support, wafer and gold thread and outer adhesive body, described support comprises the stent electrode sheet again and is used for the platform of bearing wafer, weld with stent electrode sheet and chip electrode respectively at the two ends of described gold thread, the two ends Jiao Chu of described stent electrode sheet one end, be extended with two branch that are " eight " font towards described platform, correspondingly, this end of described platform is circular arc line segment or polygon line segment and adapts with described stent electrode sheet.
The weld of described gold thread and stent electrode sheet is coated with protective layer, in the actual fabrication, described protective layer be one deck heat-conductivity conducting medium of mixing with epoxy resin of silver powder or for and the gold goal of gold thread with material.
Described gold thread stretches vertically upward from the wafer solder joint, bends towards the solder joint of stent electrode sheet again, and forming two tangent line angle of cut α in the knee is the camber line of acute angle.
Compare with prior art, the technique effect of the utility model low power LED is: 1, described stent electrode sheet one end is extended with two branch of " eight " font, correspondingly a platform end on the other side is designed to circular arc line segment or polygon line segment, after outer adhesive body encapsulates support, avoided effectively producing the problem that relatively moves even break away between the outer adhesive body of prior art light-emitting diode and the support, improved the steadiness of product; 2, add protective layer at the solder joint place of gold thread and stent electrode sheet, guarantee to be connected firmly between gold thread and the stent electrode sheet, stop the rosin joint phenomenon; 3, gold thread is extended into one in the knee two tangent line angle of cut α are the camber line of acute angle, reduce the stress of gold thread when expanding with heat and contract with cold, and leave enough stretching leeway to gold thread, strengthen the ability of the cold-resistant thermal shock of gold thread, reduce the possibility that gold thread is broken effectively, prolong the useful life of light-emitting diode.
Description of drawings
Fig. 1 is the structural representation of prior art low power LED, comprises main signal Figure 1A and the schematic top plan view 1B of looking;
Fig. 2 is the utility model low power LED structural representation, comprises main look schematic diagram 2A and schematic top plan view 2B.
Embodiment is described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
The utility model low power LED, as shown in Figure 2, comprise bed type support 1, wafer 2 and gold thread 3 and outer adhesive body 4, described support 1 comprises stent electrode sheet 11 again and is used for the platform 12 of bearing wafer 2, weld with stent electrode sheet 11 and chip electrode respectively at the two ends of described gold thread 3, the two ends Jiao Chu of described stent electrode sheet 11 1 ends, be extended with two branch 111 that are " eight " font towards described platform 12, correspondingly, this end of described platform 12 is circular arc line segment or polygon line segment and adapts with described stent electrode sheet 11.After adhesive body encapsulates support so outside, avoided effectively producing the problem that relatively moves even break away between outer adhesive body and the support, improved the steadiness of product.
As shown in Figure 2, in the utility model, described gold thread 3 is coated with protective layer 5 with the weld of stent electrode sheet 11.Guarantee like this to be connected firmly between gold thread 3 and the stent electrode sheet 11, stop the rosin joint phenomenon; In the actual fabrication, described protective layer 5 be one deck heat-conductivity conducting medium of mixing with epoxy resin of silver powder or for and the gold goal of gold thread with material, guarantee heat radiation and the problem of conducting electricity like this.
Described gold thread 3 stretches vertically upward from the wafer solder joint, bends towards the solder joint of stent electrode sheet 11 again, and forming two tangent line angle of cut α in the knee is the camber line of acute angle.Reduce the stress of gold thread 3 when expanding with heat and contract with cold like this, and leave enough tensile elongations for gold thread 3, strengthen the ability of gold thread 3 cold-resistant thermal shocks, reduce the possibility that gold thread 3 is broken effectively, prolong the useful life of light-emitting diode.
Claims (4)
1. low power LED, comprise bed type support (1), wafer (2) and gold thread (3) and outer adhesive body (4), described support (1) comprises stent electrode sheet (11) again and is used for the platform (12) of bearing wafer (2), weld with stent electrode sheet (11) and chip electrode respectively at the two ends of described gold thread (3), it is characterized in that: the two ends Jiao Chu of described stent electrode sheet (11) one ends, be extended with two branch (111) that are " eight " font towards described platform (12), correspondingly, this end of described platform (12) is circular arc line segment or polygon line segment and adapts with described stent electrode sheet (11).
2. low power LED as claimed in claim 1 is characterized in that: described gold thread (3) is coated with protective layer (5) with the weld of stent electrode sheet (11).
3. low power LED as claimed in claim 2 is characterized in that: one deck heat-conductivity conducting medium that described protective layer (5) mixes with epoxy resin for silver powder or for and the gold goal of gold thread with material.
4. as each described low power LED of claim 1 to 3, it is characterized in that: described gold thread (3) stretches vertically upward from the wafer solder joint, bend towards the solder joint of stent electrode sheet (12) again, forming two tangent line angle of cut α in the knee is the camber line of acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200150921U CN200969355Y (en) | 2006-10-09 | 2006-10-09 | Small power luminous diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200150921U CN200969355Y (en) | 2006-10-09 | 2006-10-09 | Small power luminous diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200969355Y true CN200969355Y (en) | 2007-10-31 |
Family
ID=38968932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200150921U Expired - Fee Related CN200969355Y (en) | 2006-10-09 | 2006-10-09 | Small power luminous diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200969355Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864031A (en) * | 2019-05-06 | 2020-10-30 | 上海集耀电子有限公司 | LED point light source |
-
2006
- 2006-10-09 CN CNU2006200150921U patent/CN200969355Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864031A (en) * | 2019-05-06 | 2020-10-30 | 上海集耀电子有限公司 | LED point light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20111009 |