CN203839413U - LED lamp bead for raising LED light emitting efficiency - Google Patents
LED lamp bead for raising LED light emitting efficiency Download PDFInfo
- Publication number
- CN203839413U CN203839413U CN201420068587.5U CN201420068587U CN203839413U CN 203839413 U CN203839413 U CN 203839413U CN 201420068587 U CN201420068587 U CN 201420068587U CN 203839413 U CN203839413 U CN 203839413U
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- CN
- China
- Prior art keywords
- epoxy resin
- led
- led lamp
- lamp bead
- lamp pearl
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- 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 an LED lamp bead for raising the LED light emitting efficiency. The LED lamp bead comprises a cup-shaped support. An LED chip is arranged at the bottom of the cup-shaped support. The surface of the LED chip is covered with an epoxy resin layer. The LED lamp bead is characterized in that the surface of the epoxy resin layer is an uneven rough surface. The overall brightness of the lamp bead is raised or the light emitting efficiency of the packaging step is raised through roughening process of the surface of the epoxy resin layer.
Description
Technical field
The utility model relates to a kind of LED lamp pearl of the LED of raising light extraction efficiency, especially a kind of by the epoxy resin of LED chip, LED lamp pearl, LED encapsulation is carried out to surface coarsening, with the LED lamp pearl that promotes bright dipping friendship rate or improve overall brightness.
Background technology
Conventional LED manufactures and is substantially divided into following link: epitaxial growth, chip manufacture, encapsulation process, assembling light fixture etc.In whole processing link; conventionally use epoxy resin as the surface coating material of LED lamp pearl or module (as shown in Figure 1; in Fig. 1,1a is that support, 2a are that LED chip, 3a are epoxy resin), the feature of this material is: light transmittance is high, refractive index between the ITO and air of chip surface, not oxidizable, more corrosion-resistant, chip in can guard lamp pearl and the bonding wire on chip be connected.Because epoxy resin refractive index is about 1.5 left and right, air refraction is 1.0 left and right, and light total reflection (as shown in Figure 2) can occur during from the inner directive air of epoxy resin, causes light can not arrive smoothly air.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of LED lamp pearl of the LED of raising light extraction efficiency is provided, and by the matsurface structure of epoxy resin surface, promotes lamp pearl overall brightness or promotes the light extraction efficiency that encapsulates link.
The technical scheme providing according to the utility model, the LED lamp pearl of described raising LED light extraction efficiency, comprises a bowl cup-shaped support, the bottom of bowl cup arranges LED chip, LED chip surface coverage epoxy resin layer; It is characterized in that: the surface of described epoxy resin layer is rough matsurface.
The utility model, by epoxy resin surface is carried out to roughening treatment, promotes lamp pearl overall brightness or promotes the light extraction efficiency that encapsulates link.
Brief description of the drawings
Fig. 1 is the section of structure of common LED lamp pearl.
Fig. 2 is the schematic diagram that total reflection occurs during from epoxy resin interface directive air light.
Fig. 3 is for after adopting method described in the utility model to process, and the schematic diagram of total reflection does not occur during from epoxy resin interface directive air light.
Fig. 4 is the section of structure of LED lamp pearl described in the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
As shown in Figure 4, the LED lamp pearl of raising LED light extraction efficiency described in the utility model, comprises bowl cup-shaped support 1, and the bottom of bowl cup arranges LED chip 2, LED chip 2 surface coverage epoxy resin layers 3; The surface of described epoxy resin layer 3 is rough matsurface.
Embodiment mono-: a kind of processing method that improves LED light extraction efficiency, adopts following methods: the upper surface of packaged LED lamp pearl is immersed in potassium permanganate-NaOH mixed liquor, soak 10 minutes at 10 DEG C, thereby form matsurface at epoxy resin surface; Consisting of of described potassium permanganate-NaOH mixed liquor: potassium permanganate 0.5%%, NaOH 0.5%%, surplus is water, unit is mass percent.
Embodiment bis-: a kind of processing method that improves LED light extraction efficiency, adopts following methods: the upper surface of packaged LED lamp pearl is immersed in potassium permanganate-NaOH mixed liquor, soak 1 minute at 30 DEG C, thereby form matsurface at epoxy resin surface; Consisting of of described potassium permanganate-NaOH mixed liquor: potassium permanganate 6%, NaOH 3%, surplus is water, unit is mass percent.
Embodiment tri-: a kind of processing method that improves LED light extraction efficiency, adopts following methods: the upper surface of packaged LED lamp pearl is immersed in chromium trioxide-sulfuric acid mixture liquid, soak 5 minutes at 20 DEG C, thereby form matsurface at epoxy resin surface; Consisting of of described chromium trioxide-sulfuric acid mixture liquid: chromium trioxide 3%, sulfuric acid 10%, surplus is water, unit is mass percent.
Embodiment tetra-: a kind of processing method that improves LED light extraction efficiency, adopts following methods: use metal scraping blade to swipe gently the epoxy resin of packaged LED lamp pearl upper surface, make epoxy resin surface through the whiting of scraping rear surface, rough and uneven in surface.Lamp pearl brightness before contrast scraping and after scraping, scraping back light pearl brightness value promotes approximately 1 ~ 2%.
Embodiment five: a kind of processing method that improves LED light extraction efficiency, adopt following methods: to the epoxy resin of packaged LED lamp bead surface, use harder mould to impress, after impression, form scraggly surface at epoxy resin surface, lamp pearl brightness value promotes approximately 1 ~ 2%.
As shown in Figure 3, after adopting method described in the utility model to process, the contact area between epoxy resin surface and air increases, and lighting area increases light, and total reflection does not occur during from epoxy resin interface directive air.The utility model carries out after alligatoring epoxy resin surface, the contact-making surface of epoxy resin and air has produced diversified contact angle, so originally, can be totally reflected the light of winding epoxy resins inside, can arrive in air through epoxy resin by contact-making surface from different perspectives, therefore promoted light extraction efficiency.In the time that the chip brightness in epoxy resin is constant, the brightness of lamp pearl entirety, because light consumes and reduces in the total reflection of epoxy resin inside, causes lamp pearl overall brightness to raise.
Claims (1)
1. a LED lamp pearl of improving LED light extraction efficiency, comprises a bowl cup-shaped support (1), and the bottom of bowl cup arranges LED chip (2), LED chip (2) surface coverage epoxy resin layer (3); It is characterized in that: the surface of described epoxy resin layer (3) is rough matsurface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068587.5U CN203839413U (en) | 2014-02-18 | 2014-02-18 | LED lamp bead for raising LED light emitting efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068587.5U CN203839413U (en) | 2014-02-18 | 2014-02-18 | LED lamp bead for raising LED light emitting efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839413U true CN203839413U (en) | 2014-09-17 |
Family
ID=51517217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068587.5U Expired - Fee Related CN203839413U (en) | 2014-02-18 | 2014-02-18 | LED lamp bead for raising LED light emitting efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794708A (en) * | 2014-02-18 | 2014-05-14 | 江苏新广联绿色照明工程有限公司 | LED lamp bead and processing method for improving LED luminous efficiency |
-
2014
- 2014-02-18 CN CN201420068587.5U patent/CN203839413U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794708A (en) * | 2014-02-18 | 2014-05-14 | 江苏新广联绿色照明工程有限公司 | LED lamp bead and processing method for improving LED luminous efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20210218 |