CN206236670U - A kind of 360 degree of printing opacity LED filaments - Google Patents
A kind of 360 degree of printing opacity LED filaments Download PDFInfo
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- CN206236670U CN206236670U CN201621154242.7U CN201621154242U CN206236670U CN 206236670 U CN206236670 U CN 206236670U CN 201621154242 U CN201621154242 U CN 201621154242U CN 206236670 U CN206236670 U CN 206236670U
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- transparency carrier
- printing opacity
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Abstract
The utility model discloses a kind of 360 degree of printing opacity LED filaments, including transparency carrier, multiple metal electrodes, multiple LED vertical chips, wavelength conversion layer；Multiple metal electrodes are printed on the one side of transparency carrier, and transparent passivating layer is filled between adjacent metal electrode；It is electrically connected with filled with insulating barrier between the adjacent LED vertical chip that multiple positive and negative compartment of terrain bondings of LED vertical chip are electrically connected with metal electrode, not with metal electrode and by electrode connecting piece；Metal electrode positioned at transparency carrier two ends is provided with metal terminal, wavelength conversion layer cladding transparency carrier.And, the invention also discloses corresponding preparation method.360 degree of printing opacity LED filaments described in the utility model, without lens, can not only realize 360 ° of uniformly light-emittings, and light extraction efficiency is high, and area of dissipation is big, and reliability is high.Compared with prior art, processing step is simple for its preparation method, effectively improves preparation efficiency and reduces preparation cost, is conducive to improving the reliability of product.
Description
Technical field
The utility model belongs to light emitting diode (LED) technical field, and in particular to a kind of 360 degree of printing opacity LED filaments.
Background technology
LED is a kind of semiconductor light-emitting-diode for converting electrical energy into luminous energy, and it is mainly by the P-N junction of unilateral conduction
Composition, after light emitting diode adds forward voltage, is injected into the hole in N areas, by N areas is injected into the electronics in P areas in P- from P areas
Electronics, the hole-recombination in P areas near N knots in a few micrometers respectively with N areas, produce the fluorescence of spontaneous radiation.When blue light single-chip
Carrying out mixing plus yellow fluorescent powder will produce white light, and this provides great development prospect for illumination application.
Existing LED white lights lamp bead is generally all the plastic bowl that single or multiple chip glue are fixed on metallic support
In cup, turned on by gold thread or alloy wire, then carry out glue dispensing and packaging, this packaging body mainly by the reflecting layer in bowl and
Silica gel refraction increases light extraction, but lighttight characteristic prevents the white light that chip is produced with fluorescent material from wearing to metallic support in itself
Reflecting layer is crossed, light extraction efficiency is influenceed.
In order to solve this problem, the Chinese patent of Application No. 201420019147.0 disclose a kind of LED filament and
Ligthing paraphernalia, it welds LED chip admittedly on two pieces of substrates, then makes bulk substrate integralization bonded to each other back-to-back, shaping
After coat fluorescent glue.But, its processing procedure is complicated, it is necessary to special mould, relatively costly.In Application No. 201320674278.8
State's patent discloses a kind of LED filament, which employs transparent substrates with realize 360 ° it is omnibearing luminous, but, due to what is used
Formal dress or flip-chip, can only one side die bond, still result in the positive and negative non-uniform light of LED filament so that light extraction efficiency
It is relatively low.
And, for traditional LED filament, if using positive cartridge chip bonding wire craft, the light not exported is in small size
The heat produced in bowl can not be shed in time so that luminous body heat content is concentrated, and influence reliability and the life-span of LED filament；And
If relatively costly using flip-chip, the further development of serious obstruction LED filament.
Additionally, in order to reach certain illuminance and illuminating area, the optics of lens etc need to be installed additional, then can be serious
Reduce the due energy-saving effects of LED.
Utility model content
, to make up the deficiencies in the prior art, on the one hand there is provided a kind of 360 degree of printing opacity LED filaments, it is or not the utility model
Only without lens, it is possible to achieve two-sided 360 ° of uniformly light-emittings, light extraction efficiency is high, and area of dissipation is big, and reliability is high, additionally,
Its preparation process is simple, advantageously reduces cost.
The utility model is to reach its purpose, and the technical scheme of use is as follows：
A kind of 360 degree of printing opacity LED filaments, it is characterised in that：
Including transparency carrier, multiple metal electrodes, multiple LED vertical chips, wavelength conversion layer；
Multiple metal electrodes are located at the one side of the transparency carrier, filled with saturating between the adjacent metal electrode
Bright passivation layer；
Multiple positive and negative compartment of terrains of LED vertical chip are connected on the metal electrode, are not entered with the metal electrode
Insulating barrier is filled between the adjacent described LED vertical chip that row is electrically connected with, is not electrically connected with the metal electrode
Adjacent described LED vertical chip be electrically connected with by electrode connecting piece；
The metal electrode positioned at the transparency carrier two ends is provided with metal terminal, and the wavelength conversion layer cladding is described
Transparency carrier.
Further, the material for preparing of the transparency carrier is quartz, crystalline ceramics or clear glass.
Further, the transparent passivating layer is contour with the metal electrode.
Further, the material for preparing of the electrode connecting piece is plating on sapphire, and the surface of the electrode connecting piece
There are Ag reflecting layer.
Further, the metal terminal positioned at the transparency carrier two ends is respectively equipped with both positive and negative polarity mark.
Further, the material for preparing of the wavelength conversion layer is fluorescent glue.
The utility model another aspect provides a kind of preparation method of 360 degree of printing opacity LED filaments, with traditional handicraft phase
Than its preparation process is simple, is conducive to improving preparation efficiency and reduces preparation cost, and product reliability is high.Its feature exists
In comprising the following steps：
S1：In the multiple metal electrodes of one side printing of transparency carrier, deposited between the adjacent metal electrode transparent
Passivation layer；
S2：The positive and negative compartment of terrain bonding multiple LED vertical chip on the metal electrode；
S3：Insulating barrier is filled between the adjacent described LED vertical chip not being electrically connected with the metal electrode
And bonding is carried out by electrode connecting piece；
S4：Bonding metal terminal is distinguished on the metal electrode positioned at the transparency carrier two ends；
S5：Wavelength conversion layer is coated in the surrounding of the transparency carrier, 360 degree of printing opacity LED filaments are packaged into.
Further, in the step S1, the metal electrode is printed by electroplating technology and formed, the transparent passivating layer
Deposited by thin-film technique and formed.
Further, in the step S2, entered using reflux technique between the LED vertical chip and the metal electrode
Row bonding；In the step S3, the electrode connecting piece is previously deposited Ag reflecting layer, and the LED vertical chip and the electricity
Bonding is carried out using reflux technique between the connection sheet of pole.
Further, in the reflux technique, the conductive material for using is gold-tin alloy, and peak temperature is 305 DEG C~315
℃；Or the conductive material for using is SAC, peak temperature is 280 DEG C~290 DEG C.
Relative to prior art, the utility model has following Advantageous Effects：
(1) a kind of 360 degree of printing opacity LED filaments that the utility model is provided, its structure mainly includes transparency carrier, metal electricity
Pole, LED vertical chip, wavelength conversion layer, transparent passivating layer and electrode connecting piece.Compared with conventional art, due to this practicality
New described LED filament structure uses vertical chip, between vertical chip and electrode, vertical chip and electrode connecting piece
Between directly electrically connect, and without lens, therefore, which ensure that on the basis of LED energy-saving effects in itself, realizing well
Two-sided 360 ° of uniformly light-emittings, light extraction efficiency is high.Further say, the utility model compared with positive cartridge chip, without bonding wire craft,
Preparation cost reduction, thermal diffusivity is good, lights more uniform, and light extraction efficiency is high, and reliability is high, is conducive to improving the LED filament longevity
Life；Compared with flip-chip, preparation cost is lower.
(2) preparation method of a kind of 360 degree of printing opacity LED filaments that the utility model is provided, vertical chip and metal electrode
Between, the electrical connection that is directly realized by a series arrangement between vertical chip and electrode connecting piece between PN poles, instead of and use gold
Line or alloy wire realize the electric connection of multiple chip chambers.In other words, the utility model is eliminated between traditional LED chip
Gold thread Joining Technology flow, processing step is simplified, and so as to not only increase preparation efficiency, reduces the manufacture of LED filament
Cost, and the reliability of product is greatly improved, be conducive to improving the yield of product.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the substrate portion of 360 degree of printing opacity LED filaments described in the utility model；
Fig. 2 is the partial enlarged drawing of Fig. 1；
Fig. 3 is a kind of structural representation of 360 degree of printing opacity LED filaments (without wavelength conversion layer) described in the utility model；
Fig. 4 is the partial enlarged drawing of Fig. 3；
Fig. 5 is a kind of overall structure diagram of 360 degree of printing opacity LED filaments described in the utility model；
Fig. 6 be another 360 degree of printing opacity LED filaments described in the utility model preparation flow schematic diagram (most latter two
Step embodies product overall structure figure, and remaining step is partial enlarged drawing).
Reference：
1st, transparency carrier；2nd, metal electrode；3rd, LED vertical chip；4th, wavelength conversion layer；5th, transparent passivating layer；6th, insulate
Layer；7th, electrode connecting piece；8th, metal terminal.
Specific embodiment
Elaborate many details in order to fully understand the utility model in the following description.But this practicality is new
Type can be implemented with being much different from the other modes of this description, and those skilled in the art can be without prejudice to the utility model
Similar popularization is done in the case of intension, therefore the utility model is not limited by following public specific embodiment.
As shown in Fig. 1~5, the utility model discloses a kind of 360 degree of printing opacity LED filaments, including transparency carrier 1, multiple
Metal electrode 2, multiple LED vertical chips 3, wavelength conversion layer 4；
Multiple metal electrodes 2 are located at the one side of transparency carrier 1, and transparent passivating layer 5 is filled between adjacent metal electrode 2
To play insulating effect；
The positive and negative compartment of terrain of multiple LED vertical chips 3 is connected on metal electrode 2, is not electrically connected with metal electrode 2
Adjacent LED vertical chip 3 between filled with insulating barrier 6 (insulating barrier 6 need to have concurrently reflection and insulation double action), and, not
It is electrically connected with by electrode connecting piece 7 with the adjacent LED vertical chip 3 that metal electrode 2 is electrically connected with；
Metal electrode 2 positioned at the two ends of transparency carrier 1 is provided with metal terminal 8 as lead wire, and wavelength conversion layer 4 is coated
Transparency carrier 1.
Wherein, between LED vertical chip 3 and metal electrode 2, between LED vertical chip 3 and electrode connecting piece 7 pass through back
Stream technique is electrically connected with (connection material can select tin cream or the conductive material of other same types) so that each adjacent
The PN poles of LED vertical chip 3 are connected in a series arrangement, so as to instead of between multiple LED chips can only by gold thread or
Person's alloy wire is realized being electrically connected with, i.e., the utility model eliminates the technological process that LED chip is connected with gold thread, greatly reduces
The manufacturing cost of LED filament, while also improving the reliability of product.
Wherein, insulating barrier 6 can be white glue, or other materials (need to have insulation and reflection double action concurrently), this
The different choice of a little materials belongs to equivalent protection scope of the present utility model.Metal terminal 8 can be connected using welding manner
In on metal electrode 2, certainly, connected mode is simultaneously limited to this.
Based on above-mentioned structure design, 360 degree of printing opacity LED filaments described in the utility model ensure that LED sections in itself
Energy effect, and two-sided 360 ° of uniformly light-emittings are realized well, light extraction efficiency is high, and area of dissipation is big, and luminous body heat content can be very
Outwardly spread well, product reliability is greatly improved, be conducive to improving the LED filament life-span.
Used as a kind of embodiment, the material for preparing of transparency carrier 1 is the insulation materials such as quartz, crystalline ceramics or clear glass
One kind of material, advantageously ensures that transparency carrier 1 possesses the characteristics such as translucency is good, heat-moisture resistance is excellent.
In the above-described embodiments, transparent passivating layer 5 is contour with metal electrode 2, is conducive to improving product preparation efficiency, and protect
Card product with compact structure.
In the above-described embodiments, the material for preparing of electrode connecting piece 7 is plating on sapphire, and the surface of electrode connecting piece 7
There are Ag reflecting layer, be greatly enhanced light extraction efficiency.
In the above-described embodiments, the metal terminal 8 positioned at the two ends of transparency carrier 1 is respectively equipped with both positive and negative polarity mark, to avoid
User recognizes mistake, great hommization in use.
In the above-described embodiments, the material for preparing of wavelength conversion layer 4 is fluorescent glue.Certainly, the utility model is not limited to
This, wavelength conversion layer 4 can also be made up of other light-converting materials, and it is equivalent protection scope of the present utility model.
It is corresponding, the invention also discloses a kind of 360 degree of preparation methods of printing opacity LED filament, as shown in fig. 6, its
Preparation flow is comprised the following steps：
S1：In the multiple metal electrodes 2 of one side printing of transparency carrier 1, deposited between adjacent metal electrode 2 transparent blunt
Change layer 5；
S2：The positive and negative compartment of terrain bonding multiple LED vertical chip 3 on metal electrode 2；
S3：Insulating barrier 6 is filled between the adjacent LED vertical chip 3 not being electrically connected with metal electrode 2 and is passed through
Electrode connecting piece 7 carries out bonding；
S4：Bonding metal terminal 8 is distinguished on the metal electrode 2 positioned at the two ends of transparency carrier 1；
S5：Wavelength conversion layer 4 is coated in the surrounding of transparency carrier 1,360 degree of printing opacity LED filaments are packaged into.
Wherein, in step sl, metal electrode 2 is printed by electroplating technology and formed, and transparent passivating layer 5 passes through thin-film technique
Deposition is formed.
Wherein, in step s 2, bonding is carried out using reflux technique between LED vertical chip 3 and metal electrode 2；In step
In rapid S3, electrode connecting piece 7 is previously deposited between Ag reflecting layer, and LED vertical chip 3 and electrode connecting piece 7 using backflow work
Skill carries out bonding.
More particularly, in reflux technique, the conductive material for using be gold-tin alloy, peak temperature be about 305 DEG C~
315 DEG C (preferably 310 DEG C)；Or the conductive material for using is SAC, peak temperature is 280 DEG C~290 DEG C.
Furthermore, it is necessary to explanation, in the utility model, a plurality of 360 degree of printing opacity LED filaments can be with chip array side
Formula is used, it is also possible to is obtained 360 degree of printing opacity LED filaments of wall scroll and is come into operation by cutting transparency carrier 1.
A kind of other contents of 360 degree of printing opacity LED filaments described in the utility model and preparation method thereof referring to prior art,
Will not be repeated here.
The above, is only preferred embodiment of the present utility model, not does any formal to the utility model
Limitation, therefore all contents without departing from technical solutions of the utility model are implemented according to technical spirit of the present utility model to more than
Any simple modification, equivalent variations and modification that example is made, still fall within the range of technical solutions of the utility model.
Claims (6)
1. a kind of 360 degree of printing opacity LED filaments, it is characterised in that：
Including transparency carrier, multiple metal electrodes, multiple LED vertical chips, wavelength conversion layer；
Multiple metal electrodes are located at the one side of the transparency carrier, filled with transparent blunt between the adjacent metal electrode
Change layer；
Multiple positive and negative compartment of terrains of LED vertical chip are connected on the metal electrode, do not carry out electricity with the metal electrode
Property connection adjacent described LED vertical chip between be filled with insulating barrier, the phase not being electrically connected with the metal electrode
The adjacent LED vertical chip is electrically connected with by electrode connecting piece；
The metal electrode positioned at the transparency carrier two ends is provided with metal terminal, and the wavelength conversion layer cladding is described transparent
Substrate.
2. 360 degree of printing opacity LED filaments according to claim 1, it is characterised in that：The material for preparing of the transparency carrier is
Quartz, crystalline ceramics or clear glass.
3. 360 degree of printing opacity LED filaments according to claim 1, it is characterised in that：The transparent passivating layer and the metal
Electrode is contour.
4. 360 degree of printing opacity LED filaments according to claim 1, it is characterised in that：The electrode connecting piece prepares material
It is that Ag reflecting layer are coated with sapphire, and the surface of the electrode connecting piece.
5. 360 degree of printing opacity LED filaments according to claim 1, it is characterised in that：Positioned at the institute at the transparency carrier two ends
State metal terminal and be respectively equipped with both positive and negative polarity mark.
6. 360 degree of printing opacity LED filaments according to claim 1, it is characterised in that：The wavelength conversion layer prepares material
It is fluorescent glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154242.7U CN206236670U (en) | 2016-10-31 | 2016-10-31 | A kind of 360 degree of printing opacity LED filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154242.7U CN206236670U (en) | 2016-10-31 | 2016-10-31 | A kind of 360 degree of printing opacity LED filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206236670U true CN206236670U (en) | 2017-06-09 |
Family
ID=58982818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621154242.7U Active CN206236670U (en) | 2016-10-31 | 2016-10-31 | A kind of 360 degree of printing opacity LED filaments |
Country Status (1)
| Country | Link |
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| CN (1) | CN206236670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384733A (en) * | 2016-10-31 | 2017-02-08 | 广东晶科电子股份有限公司 | 360-degree light-transmitting LED filament and preparation method thereof |
| CN107785472A (en) * | 2017-09-20 | 2018-03-09 | 广东晶科电子股份有限公司 | A kind of LED packagings of high reliability and preparation method thereof |
| US11543082B2 (en) * | 2017-09-15 | 2023-01-03 | Technical Consumer Products, Inc. | Light emitting diode (LED) filament light bulb with secured antenna |
-
2016
- 2016-10-31 CN CN201621154242.7U patent/CN206236670U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384733A (en) * | 2016-10-31 | 2017-02-08 | 广东晶科电子股份有限公司 | 360-degree light-transmitting LED filament and preparation method thereof |
| US11543082B2 (en) * | 2017-09-15 | 2023-01-03 | Technical Consumer Products, Inc. | Light emitting diode (LED) filament light bulb with secured antenna |
| CN107785472A (en) * | 2017-09-20 | 2018-03-09 | 广东晶科电子股份有限公司 | A kind of LED packagings of high reliability and preparation method thereof |
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