CN105047802A - Sealing method for direct-insert type light-emitting diode (LED) lamp - Google Patents
Sealing method for direct-insert type light-emitting diode (LED) lamp Download PDFInfo
- Publication number
- CN105047802A CN105047802A CN201510459703.5A CN201510459703A CN105047802A CN 105047802 A CN105047802 A CN 105047802A CN 201510459703 A CN201510459703 A CN 201510459703A CN 105047802 A CN105047802 A CN 105047802A
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- China
- Prior art keywords
- glue
- diffusant
- epoxy resin
- sealing method
- led
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 239000003292 glue Substances 0.000 claims abstract description 71
- 239000003822 epoxy resin Substances 0.000 claims abstract description 33
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 238000004040 coloring Methods 0.000 claims description 22
- 229920000297 Rayon Polymers 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 7
- 229920006335 epoxy glue Polymers 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 abstract 4
- 238000002845 discoloration Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 7
- 229910002027 silica gel Inorganic materials 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 239000000084 colloidal system Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses a sealing method for a direct-insert type light-emitting diode (LED) lamp. The sealing method comprises the following steps: firstly, setting the heights of a mold strip and a sticking point, and selecting a diffusant and a coloring agent; secondly, heating epoxy resin A, mixing the epoxy resin with epoxy resin B at a certain ratio, adding the diffusant and the coloring agent, stirring the diffusant and the coloring agent, and carrying out vacuum-pumping treatment on stirred mixed glue; thirdly, fixing the bound LED bracket on a loading rack; fourthly, adjusting the glue-pouring quantity, the glue-extruding speed, the sticking time and the sticking distance; and finally starting a pouring machine and carrying out sealing treatment on the bound LED bracket. The epoxy resin A is heated and then is mixed with the epoxy resin B at the certain ratio, so that the mixing viscosity is reduced; the diffusant and the coloring agent are added and stirred, so that the problem of yellow discoloration of the baked LED lamp is avoided by controlling the mixing ratio and the mixing time; and the quality and the yield of the LED lamp are improved, so as to improve the cost performance of an LED display screen.
Description
Technical field
The invention belongs to LED chip encapsulation field, be specifically related to a kind of glue sealing method of direct insertion LED.
Background technology
LED casting glue is a kind of auxiliary material of LED, has high index of refraction and high transmission rate, and can play the luminous flux that protection LED chip increases LED, viscosity is little, easy deaeration, is applicable to embedding and compression molding, makes LED have good durability and reliability.
In LED use procedure, the loss that the photon that radiation recombination produces produces when outwards launching, mainly comprises three aspects: the absorption of chip internal structure defect and material; The reflection loss that photon causes due to refringence at outgoing interface; And the total reflection loss to cause because incidence angle is greater than the cirtical angle of total reflection.Therefore, a lot of light cannot shine outside from chip.By applying the relatively high substratum transparent of one deck refractive index at chip surface---LED silica gel, because this glue-line is between chip and air, thus effectively reduces the loss of photon at interface, improves and get optical efficiency.In addition, the effect of casting glue also comprises carries out mechanical protection to chip, Stress Release, and as a kind of guide structure.Therefore, require that its light transmittance is high, refractive index is high, Heat stability is good, good fluidity, is easy to spraying.For improving the reliability of LED, also require that casting glue has agent of low hygroscopicity, low stress, the characteristic such as ageing-resistant.Casting glue conventional at present comprises epoxy resin and silica gel.Silica gel is high owing to having light transmittance, and refractive index is large, and Heat stability is good, the features such as stress is little, and moisture absorption is low, be obviously better than epoxy resin, be used widely in high-power LED encapsulation, but cost are higher.Research shows, raising silica gel refractive index effectively can reduce the photon loss that refractive index physical barriers brings, and improve external quantum efficiency, but silica gel performance is influenced by environmental temperature.Along with temperature raises, the thermal stress of silica gel inside strengthens, and causes the refractive index of silica gel to reduce, thus affects LED light effect and light distribution.
At present, packaging plastic of the prior art mainly contains following characteristics:
Mixed proportion: A:B=100:100(weight ratio);
Mixing viscosity 25 DEG C: 650 ~ 900cps;
Gel time: 150 DEG C × 85 ~ 105 seconds;
Up time: 25 DEG C × 4 hours;
Condition of cure: initial cure 120 DEG C ~ 125 DEG C × 35 ~ 45 minutes;
Cured later 120 DEG C × 6 ~ 8 hours or 130 DEG C × 6 hours;
Casting glue should be noted that some:
The product surface of sealing is wanted to need to keep dry, clean;
By proportioning taken amount, and weigh accurately, proportioning please be make sure to keep in mind and be weight ratio but not volume ratio, need to stir after A, B agent mixing, to avoid solidification not exclusively;
Please carry out encapsulating in time after stirring, and within the up time, use the glue mixed as far as possible;
Can arrange in pairs or groups diffusant and color of 809A/B uses.
Adopt the LED that the casting glue ratio of prior art and consumption are produced, easily produce the phenomenon that LED easily turns yellow, have impact on the rate of finished products of LED, and useful life.
The sealing of prior art, in whipping process, stirred vessel wall and container bottom dead angle place easily stir uneven, cause colloid on same support to have colored parts phenomenon variant with the TG gel time recorded.
Summary of the invention
Technical problem to be solved by this invention is: the glue sealing method providing a kind of direct insertion LED, solves the problem that colloid in prior art stirs uneven colored parts.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A glue sealing method for direct insertion LED, comprises the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to certain ratio with epoxy resin B, add diffusant and colouring agent, and stir;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
The mixed weight ratio of described step 3 epoxy resin A, B is 4:1 ~ 2:1.
The part by weight of described step 3 epoxy resin AB epoxy glue and diffusant is 15:1 ~ 10:1.
The mix and blend time in described step 3 is 10 ~ 15 minutes.
Diffusant in described step 3 is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
Colouring agent in described step 3 comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
Pumpdown time in described step 5 is 10 ~ 15 minutes.
Compared with prior art, the present invention has following beneficial effect:
1, mix according to certain ratio with epoxy resin B after first heating being carried out to epoxy resin A, reduce mixing viscosity, add diffusant and colouring agent, and stir, by controlling mixed proportion and incorporation time, the problem that after avoiding baking, LED turns yellow, improves quality and the rate of finished products of LED, and then improves the cost performance of LED display.
2, by arranging rational mixing time and pumpdown time, colloid can be mixed fully, and bubble can be got rid of fully, improve the reliability of LED.
Embodiment
Below structure of the present invention and the course of work are described further.
A glue sealing method for direct insertion LED, comprises the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to certain ratio with epoxy resin B, add diffusant and colouring agent, and stir;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
The mixed weight ratio of described step 3 epoxy resin A, B is 4:1 ~ 2:1.
The part by weight of described step 3 epoxy resin AB epoxy glue and diffusant is 15:1 ~ 10:1.
The mix and blend time in described step 3 is 10 ~ 15 minutes.
Diffusant in described step 3 is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
Colouring agent in described step 3 comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
Pumpdown time in described step 5 is 10 ~ 15 minutes.
Specific embodiment one,
A glue sealing method for direct insertion LED, comprises the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to the part by weight of 4:1 with epoxy resin B, add diffusant according to AB epoxy glue and diffusant with the part by weight of 10:1, and add colouring agent, the part by weight of colouring agent and diffusant is 1:3, stirs, and mixing time is 15 minutes;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process, the pumpdown time is 10 minutes;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
Described diffusant is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
Colouring agent comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
Specific embodiment two,
A glue sealing method for direct insertion LED, comprises the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to the part by weight of 3:1 with epoxy resin B, add diffusant according to AB epoxy glue and diffusant with the part by weight of 13:1, and add colouring agent, the part by weight of colouring agent and diffusant is 1:4, stirs, and mixing time is 10 minutes;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process, the pumpdown time is 15 minutes;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
Described diffusant is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
Colouring agent comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
Specific embodiment three,
A glue sealing method for LED, comprises the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to the part by weight of 2:1 with epoxy resin B, add diffusant according to AB epoxy glue and diffusant with the part by weight of 15:1, and add colouring agent, the part by weight of colouring agent and diffusant is 1:2, stirs, and mixing time is 12 minutes;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process, the pumpdown time is 13 minutes;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
Described diffusant is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
Colouring agent comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
Claims (7)
1. a glue sealing method for direct insertion LED, is characterized in that: comprise the steps:
Step 1, mould bar and stuck point height are set;
Step 2, selection diffusant and colouring agent;
Step 3, by epoxy resin A heat after, mix according to certain ratio with epoxy resin B, add diffusant and colouring agent, and stir;
Step 4, detect at the bottom of stirred vessel or whether chamber wall have the epoxide-resin glue do not stirred, if had, continuing to stir, otherwise, perform step 5;
Step 5, to stir after mixing glue vacuumize process;
Step 6, the mixing glue after vacuumizing is added in full-automatic glue filling funnel and viscose glue funnel;
Step 7, the LED support bound is fixed on stock shelf;
Step 8, adjustment encapsulating quantity and plastic emitting speed, viscose glue time and viscose glue distance;
Step 9, startup glue pouring machine carry out sealing process to the LED support bound.
2. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the mixed weight ratio of described step 3 epoxy resin A, B is 4:1 ~ 2:1.
3. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the part by weight of described step 3 epoxy resin AB epoxy glue and diffusant is 15:1 ~ 10:1.
4. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the mix and blend time in described step 3 is 10 ~ 15 minutes.
5. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the diffusant in described step 3 is the transparent fog-like liquid of DP series ~ DP-100H, and viscosity is 30000-50000CPS under normal temperature.
6. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the colouring agent in described step 3 comprises CP-200A redness, CP-GL is green, CP-600N blue (IR), CP-Y are yellow, CP-500 orange.
7. the glue sealing method of direct insertion LED according to claim 1, is characterized in that: the pumpdown time in described step 5 is 10 ~ 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459703.5A CN105047802A (en) | 2015-07-31 | 2015-07-31 | Sealing method for direct-insert type light-emitting diode (LED) lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459703.5A CN105047802A (en) | 2015-07-31 | 2015-07-31 | Sealing method for direct-insert type light-emitting diode (LED) lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105047802A true CN105047802A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510459703.5A Pending CN105047802A (en) | 2015-07-31 | 2015-07-31 | Sealing method for direct-insert type light-emitting diode (LED) lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421111A (en) * | 2015-12-22 | 2016-03-23 | 广州番禺职业技术学院 | Process of printing and dyeing animal skin with pitaya juice |
| CN113916068A (en) * | 2021-12-13 | 2022-01-11 | 成都瑞迪威科技有限公司 | Overload-resistant encapsulating process for missile-borne products |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704988A (en) * | 2009-11-23 | 2010-05-12 | 东莞市永兴电子科技有限公司 | Method for preparing fluorescent powder colloid |
| CN101974164A (en) * | 2010-11-16 | 2011-02-16 | 山东大学 | Preparation process of high foaming phenolic resin foam material |
| CN104362245A (en) * | 2014-11-20 | 2015-02-18 | 无锡科思电子科技有限公司 | Potting compound method of LED lamp |
-
2015
- 2015-07-31 CN CN201510459703.5A patent/CN105047802A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704988A (en) * | 2009-11-23 | 2010-05-12 | 东莞市永兴电子科技有限公司 | Method for preparing fluorescent powder colloid |
| CN101974164A (en) * | 2010-11-16 | 2011-02-16 | 山东大学 | Preparation process of high foaming phenolic resin foam material |
| CN104362245A (en) * | 2014-11-20 | 2015-02-18 | 无锡科思电子科技有限公司 | Potting compound method of LED lamp |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421111A (en) * | 2015-12-22 | 2016-03-23 | 广州番禺职业技术学院 | Process of printing and dyeing animal skin with pitaya juice |
| CN113916068A (en) * | 2021-12-13 | 2022-01-11 | 成都瑞迪威科技有限公司 | Overload-resistant encapsulating process for missile-borne products |
| CN113916068B (en) * | 2021-12-13 | 2022-04-12 | 成都瑞迪威科技有限公司 | Overload-resistant encapsulating process for missile-borne products |
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Application publication date: 20151111 |
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