CN104681696A - Syringe for LED package and manufacturing method of LED package - Google Patents
Syringe for LED package and manufacturing method of LED package Download PDFInfo
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- CN104681696A CN104681696A CN201410699822.3A CN201410699822A CN104681696A CN 104681696 A CN104681696 A CN 104681696A CN 201410699822 A CN201410699822 A CN 201410699822A CN 104681696 A CN104681696 A CN 104681696A
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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
-
- 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
- H01L33/005—Processes
-
- 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
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Led Device Packages (AREA)
Abstract
The invention relates to a syringe for an LED package and a manufacturing method of the LED package. More specifically, a syringe for the manufacturing of the LED package includes: a body unit storing a mixture of a phosphor and an encapsulating material contained therein to be discharged to the lower side; and a thermochromic compound which is mixed with a formed material when the body unit is formed and indicates a temperature of the mixture by changing a color of the body unit, wherein the syringe for the manufacturing of the LED package has a temperature indicating function, and a dilution section of the top layer and a precipitation section of the lowest layer of the body unit are determined by the temperature indicated by color changes on the surface of the body unit of the stirred mixture.
Description
Technical field
The present invention relates to LED package, more specifically, relating to can with the temperature of visual manner identification phosphor blends and state, thus by the LED package syringe with temperature display function of the reliability maximization on preparation section and the preparation method of LED package utilizing this syringe.
Background technology
As light-emitting diode (the light emission diode of light-emitting device, hereinafter referred to as LED) be both midget plant, there is again high efficiency, and can distinctness be embodied and the various luminescence of color, and there is outstanding drive characteristic, therefore, repeatedly carrying out vibrating and there is in switch motion outstanding feature.
Because LED can form light emitting source by the change of the compound semiconductors such as GaAs, AlGaAs, GaN, InGaN and AlGaInP (compound semiconductor) material, therefore use the light source into shades of colour.This LED, as illumination equipment, along with the increase of the demand to high power and high brightness capabilities, carries out for the research improving the Performance And Reliability of LED just actively.
In order to improve the performance of LED product, not only need to prepare the LED chip itself with outstanding optical efficiency, but also need for effectively extracting light, colour purity is outstanding, and the making of the LED of characteristic equilibrium between product.
In order to embody white light by LED, in blueness or ultraviolet LED chip, usually form the fluorescence coating being mixed with the state of yellow fluorophor or green-emitting phosphor and red-emitting phosphors.This fluorescence coating by utilizing distributor, fluorescent liquid coating fluorophor being mixed in epoxy resin or silicones etc. on chip after, through super-dry process, form LED thus.
The light quality of this LED is not only affected because of the characteristic of coated fluorophor itself, but also is greatly affected because of the distributional pattern of fluorophor.In the treatment process of common LED, being flow into by the mixture of transparent resin and fluorophor powder in the mode be provided with in the encapsulation cup of LED chip, there is sizable difficulty in the spatial distribution of the fluorophor controlled in resin material in an uniform manner.Due to this problem, the density unevenness of the fluorophor be coated in LED core is weighed, therefore, the chromaticity coordinates deviation exporting light is serious, and look separation or look trace phenomenon easily occur.
Fig. 1 is the figure of the LED preparation section illustrated in the past.
With reference to (a) part of Fig. 1, the encapsulation main body 11 of substrate 12 is had to be located at production path or the position of regulation in internal configurations.On the top of substrate 12, LED chip 13 is installed, and comes connection substrate 12 and LED chip 13 by wire or metal wire 14.
Under this configuration status, as shown in (b) part of Fig. 1, the resin material 15 being mixed with fluorophor 16 will be injected into the predetermined space of encapsulation main body 11.LED chip 13 is being packaged in formation solidification under inner state by the fluorophor 16 injected by this way and the fluid-mixing of resin material 15, thus implements LED operation.
In the preparation section of this LED, various ways can be suitable in order to form fluorophor resin bed, but generally use the mode utilizing distributor (dispenser).This distributor forms resin bed in the mode of discharging the mixture of quantitative fluorophor and resin material to the periphery of LED chip by syringe (syringe), and under the fluorophor of the state mixed mutually with resin material obtains the state of filling in syringe, precipitate along with the process of time, therefore, need to terminate injection process rapidly.
The deposited phenomenon of above-mentioned fluorophor particle brings bad impact can to the characteristic of the chromaticity coordinates of product and so on.Therefore, when using identical distributor in identical operation, between the chromaticity coordinates also between LED, deviation occurs, and relative to reference color coordinate, the LED that deviation is large can be considered defective.
Particularly, due to this deposited phenomenon, make to be present in the upper strata of syringe inside and the mixing ratio of fluorophor is starkly lower than the part of specified ratio and is present in the lower floor of syringe inside and formation coexists apparently higher than the part of specified ratio by the mixing ratio of fluorophor.This upper and lower with different blended composition and division in a proportion cause defective in injection process, and this can bring the reduction of the yield of operation.
In order to reduce disqualification rate in the preparation process of LED, the uniformity of the admixture of resin material and fluorophor becomes important factor, but utilizing naked eyes this to be carried out to identification on preparation section is in fact impossible thing, although can consider the situation using extra optical equipment, there is the production cost and the problem of time that overrun in this method.
Summary of the invention
The present invention proposes to solve problem as above, the object of the invention is to, provides the preparation method of the LED syringe with temperature display function and the LED utilizing this syringe.The above-mentioned LED syringe with temperature display function identifies admixture at once by confirmation temperature, fluorophor can be injected equably in the production process of LED, and by only using the interval with optimized ratio, disqualification rate is down to minimum, thus can has the yield of LED is maximized.
The invention provides the LED syringe with temperature display function, it is characterized in that, comprising: body, contain the mixture of fluorophor and plastic packaging material in inside, and discharge from downside; And display part, be made up of temperature indicating compound, when above-mentioned body is shaping, mix mutually with article shaped, and the temperature of said mixture is shown by the color change of body, and above-mentioned display part has temperature display function, to present color according to by the mixture through stirring, between the dilution zone of the superiors of understanding body and between undermost settling zone.Therefore, owing to can confirming exactly and determining the precipitation capacity of the fluorophor based on temperature, thus improve the accuracy of operation, increase yield.
Above-mentioned display part can show the first temperature range, the second temperature range and the 3rd temperature range with different colors or color depth, above-mentioned first temperature range is the temperature range of below the normal temperature of mixture, above-mentioned second temperature range is the temperature range between 30 DEG C to 40 DEG C, and above-mentioned 3rd temperature range is the temperature range of more than 40 DEG C.
Further, above-mentioned temperature indicating compound can for the resin mixed mutually with article shaped when carrying out injection mo(u)lding.
Preferably, be 0.2% ~ 3.0% to the mixed weight ratio of the article shaped of above-mentioned temperature indicating compound.
Above-mentioned thermo-color can comprise: the first thermo-color, for showing the temperature of the first temperature range; Second thermo-color, for showing the coating of the second temperature range; And the 3rd coating, for showing the temperature of the 3rd temperature range.Therefore, there is outstanding temperature differentiated energy.
Preferably, above-mentioned temperature indicating compound presents color change in the scope of 25 DEG C to 45 DEG C.Therefore, by setting optimized Temperature Distribution at operational environment, thus yield can be improved.
Further, if raise along with the temperature of the mixture through stirring, the ratio between the dilution zone being directed to valid interval and between settling zone may increase.Therefore, along with confirmation temperature, this rate variance can be identified exactly.
Further, distributed in advance according to the amount between the settling zone that temperature decides, and flow into LED, till being injected into the border between valid interval and dilution zone.Thus, the waste of each parts and fluorophor is down to minimum.
Above-mentioned body can also comprise antistatic agent, and it mixes when above-mentioned article shaped is shaping, and prevents electrostatic to allow to realize the quantitative cooperation of fluorophor and plastic packaging material.Therefore, it is possible to improve the efficiency in LED production process.
On the other hand, the invention provides the preparation method of LED, it is characterized in that, comprising: syringe filling step, fluorophor and plastic packaging material are applicable to body; Whipping step, is stirred the mixture by blender; Temperature confirms step, is confirmed the temperature of the mixture through stirring by the display part of body; Display by display part decides between dilution zone, between settling zone and the step of the amount of valid interval; Discharge step between settling zone, distribute in advance between settling zone; And valid interval implantation step, to LED, valid interval is injected into.Therefore, there is the advantage that yield obviously rises.Confirm step at said temperature, the temperature after just having stirred and the temperature dropping to normal temperature confirm in the mode of vision by the color of measurement unit or color depth.
According to the preparation method of the LED syringe with temperature display function of the present invention and the LED utilizing this syringe, owing to can set the valid interval of the mixture of fluorophor and plastic packaging material according to the difference of temperature, thus the interval of the mixture in optimized syringe can be selected to be suitable for, thus compared with in the past, have and can expect the yield that significantly rises, and the waste of the parts forming fluorophor and LED can be prevented, can not only productivity ratio be increased, and unnecessary waste can also be reduced and reduce the advantage of production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the preparation section of the LED illustrated in the past.
Fig. 2 illustrates that this is according to the cross sectional side view with the LED syringe of temperature display function invented.
Fig. 3 illustrates have the LED of the LED syringe of temperature display function based on according to of the present invention and carry out the schematic diagram of the example contrasted therewith.
Fig. 4 represents the schematic diagram according to the difference of the valid interval of the mixture of temperature.
Fig. 5 a to Fig. 5 c is the signal chart of relation that temperature, time and luminosity are shown in each temperature range.
Fig. 6 is the flow chart of the preparation method illustrated according to LED of the present invention.
Embodiment
Below, to according to of the present invention with reference to accompanying drawing there is the LED syringe of temperature display function and utilize the preparation method of the LED of this syringe to be described in more details.
Fig. 2 illustrates according to the end view with the LED syringe of temperature display function of the present invention.
Substantially, the present invention, as the syringe of distributor being located at LED preparation facilities, comprising: body 100, contains the mixture of fluorophor and plastic packaging material in inside, and discharge from downside; And temperature indicating compound, when above-mentioned body 100 is shaping, mix mutually with article shaped, thus show the temperature of said mixture by the color change of body 100.
This syringe can combine with distributor, above-mentioned distributor arrangement is on the predetermined transfer path of the encapsulation main body of transfer LED, preferably, said syringe makes the mixture of fluorophor and plastic packaging material can carry out filling and exchanging, and is configured dismantledly.
The LED preparation facilities being configured with syringe of the present invention can be suitable for the equipment of variform, and the injection form of syringe also can be applicable to the selected mode such as formula of directly discharging or indirect discharge formula.
The body 100 of this syringe is in order to externally show inner state, can be formed by transparent material, but be not limited thereto, opening (not showing Ref. No.) is formed in upside, thus can filling mixture, and form predetermined nozzle in downside, for injecting selected amount.The material of this body 100 can optionally be formed, but preferably, considers productivity ratio, is formed by as the resin material that can carry out the article shaped of injection mo(u)lding.
But it is as described below, capacity in the outside of syringe 100 by specifying, grasp between dilution zone and/or between settling zone with visual manner, and set in the mode of not distributing in advance this, thus comprise measurement unit 200, above-mentioned measurement unit 200 shows in the mode that can measure the capacity of inner mixture from the outside of body 100, thus, preferably, the material of above-mentioned body 100 is formed with transparent material.
Further, as the structure of mixture being contained in body 100, fluorophor can be suitable for the fluorophor of redness, green, blueness or the Yellow series with the current known multiple constituent maybe can predicted.
Further, as another structure of mixture, plastic packaging material can be formed by the resin object such as epoxy resin or silicones with outstanding transmitance and curability, but is not limited thereto.
As time goes by, the mixture of the above-mentioned fluorophor and plastic packaging material that are contained in the inside of syringe precipitates because of the difference of proportion, and as mentioned above, this can cause the underproof problem of generation according to the interval of the mixture injected to encapsulation main body.Present invention demonstrates that, in the process of the precipitation degree determining this fluorophor, the temperature and time of mixture together becomes principal element, the preparation method that can improve the LED of yield in the dependency relation between temperature is provided thus.
Within the concept of the invention, above-mentioned body 100 comprises temperature indicating compound, thus shows inner variations in temperature at its whole by color.
On the other hand, when the article shaped of temperature indicating compound with above-mentioned body 100 mixes mutually, and when carrying out injection mo(u)lding, can together form body 100, but as another embodiment of the present invention, according to circumstances, thermo-color can be comprised by above-mentioned measurement unit 200, and visually show the temperature of mixture by the color change of the predetermined position of measurement unit 200.Preferably, this measurement unit 200 can be formed by thermo-color (thermopaint) or the material comprising thermo-color, and above-mentioned thermo-color, according to temperature, is changed by color and reacts.
The mode that this measurement unit 200 can be coated on the outer surface of body 100 with thermo-color configures, also can according to circumstances, under the state mixed mutually with the material such as resin object or fiber, configures in the mode of film form attachment.
As this temperature indicating compound or thermo-color, can suitable metal complex salt, cholesteryl liquid crystal, variable color (Matamocolor), crystal violet lactone (crystalviolet lactone) etc., and representatively reversible thermo paint, the Ag of temperature indicating composition can be used as respectively
2hgI
4and Cu
2hgI
4, or they are pressed respectively requirement ratio stirring, and mix the coating of required color, thus color can be changed at a certain temperature, but be not limited thereto.As mentioned above, because precipitation capacity changes according to the temperature and time of mixture, therefore, it is possible to distinguish this temperature range, thus embody set temperature range with different color distortions.That is, the amount of the fluorophor that the amount that can show precipitated fluorophor by the difference of color maybe will precipitate.
Within the concept of the invention, due to syringe 100 Reusability constantly to a certain extent, therefore, preferably, the material that invertibity is outstanding should be used, instead of irreversibility or accurate reversible thermally indicating material, variations in temperature at ordinary times can be detected.
What need to pay attention to is, described in the showing below of this temperature, because being suitable for fluorophor and plastic packaging material in the inside of body 100 on the preparation section of LED, relative to normal temperature, the heat produced in for mixed uniformly whipping step can produce the rising of temperature, therefore, under the configuration status in distributor, meaning can be had more to the identification of variations in temperature.
Above-mentioned temperature indicating compound uses when body 100 shaping, and preferably, thisly shapingly should to realize with injection molding, for this reason, according to the proterties of particular compound, can classify as follows.
[table 1]
| Difference | Temperature indicating powder | Temperature indicating slurry | Temperature indicating masterbatch |
| Proterties | Powder | Liquid | The solid of particle shape |
| Oiliness ink | △ | △ | × |
| Aqueous ink | × | ○ | × |
| Injection moulding and blowing | △ | △ | ○ |
Wherein, identification mark "×" represents and is not suitable for, and "○" represents applicable, the state that " △ " expresses possibility.
The temperature indicating powder of graininess can use when ink for screen printing or a small amount of injection moulding.The frosting that this temperature indicating powder can be applicable to containing ABS, PET, Polypropylene, Polystyrene, PVC, PVA etc. applies.In the case, the blending ratio of oil-based solvent is preferably 15% ~ 30%.
When temperature indicating slurry (slurry), due in aqueous, thus there is the characteristic that easy hydrotropism ink or water paint are mixed into.When temperature indicating slurry, solid contains ratio probably 45% ~ 50%.This temperature indicating slurry is suitable for water-soluble silk screen printing, coating, injection or dyeing, therefore, preferably, can be applicable to the predetermined coating in measurement unit 200 according to another embodiment of the present invention or film.Above-mentioned temperature indicating slurry can be applicable to silk screen printing, soft version intaglio printing vinyl plastics, cloth, paper, film, glass, pottery, trees etc.In the case, preferably, the blending ratio in aqueous solvent is 15% ~ 30%.
Preferably, temperature indicating powder as above or temperature indicating slurry are as the thermo-color or the film that are applicable to measurement unit 200.But when this thermo-color, the temperature indicating compound do not got rid of as injection mo(u)lding uses.
When temperature indicating masterbatch (master batch), preferred configuration is the processing being applicable to extruding or injection mo(u)lding and so on, and drops into temperature indicating compound to the article shaped as basic plastic raw materials.Usually, the form supply of first time processing can be carried out with grain of rice size, and in first time processing form, the ratio of temperature-indicating pigment is advisable with about 12% ~ 18%.In the present invention, temperature indicating compound can be understood to mean the particle of the form of having carried out first time processing.
In the case, the article shaped being used in above-mentioned injection moulding can be selected from the compound such as PE, PP, PS, ABS, PET, polystyrene (polystyrene), PVC, PVA, terylene (Polyester), nylon (Nylon), but is not limited thereto.Preferably, in above-mentioned article shaped, the ratio of temperature indicating compound is between 0.2% ~ 3%.
Consider injection mo(u)lding, temperature indicating compound of the present invention is made up of above-mentioned temperature indicating masterbatch, and this proposes as most preferred embodiment.
Stirred at the mixture of fluorophor and plastic packaging material, and under the state forming uniform mixing to a certain degree, along with the process of time, precipitation is produced in the inside of body 100, and due to this precipitation, along the short transverse of body 100, distinguish the high interval of the mixing ratio of fluorophor and low interval.
Fig. 2 more clearly represents the concept in this interval, can divide into: c between settling zone, and because forming undermost precipitation, mixing ratio is high; A between dilution zone, the interval of the superiors that mixing ratio is low; And valid interval b, as intermediate layer, can LED be applicable to.
Above-mentioned interval can not be the state clearly distinguished in the mode of sense of vision, relatively, can define with the state with predetermined mixing ratio interval, valid interval b can be considered as the interval of the mixing ratio with the degree that can not present big error in the chromaticity coordinates of LED, and between dilution zone, between a and settling zone, c can be understood as is the interval had an impact to yield.
On the other hand, the material of the body 100 of said syringe can be made up of selected material, and in the characteristic of resin material, according to friction, there is the worry that electrostatic occurs, and this can become the factor of the accuracy reducing engagement process.Consider the accuracy that will improve this cooperation, as an embodiment, body 100 can implement the conductive processing for preventing electrostatic, and can be suitable for the masterbatch comprising antistatic agent.As this embodiment, the scheme that the macromolecule resin thing with electrostatic dispersion performance is mixed can be considered, and as macromolecule resin thing, polyether-based polymers aliphatic diisocyanate compound containing oxirane can be suitable for and the thermoplastic polyurethane (polyurethane) prepared in the mode making the chain extender of the carbon number 2 to 10 containing primary hydroxyl or amido react or polyureas (polyurea).
Further, as described below, approximately needing about 100 minutes from the decline of the temperature of predetermined temperature range to normal temperature, and in order to more improve the discharge performance of temperature, material for improving heat conductivity can being comprised at body 100.
Fig. 3 is the state that difference illustrates the LED in the interval based on this mixing ratio, causes the schematic diagram that can compare.
As mentioned above, if be provided with body 310, then LED 300 layer configuring chip 320 thereon, and after the connection etc. terminating predetermined metal wire prepares, inject mixture, thus form encapsulation part 330.
Above-mentioned encapsulation part 330 completes its form by predetermined curing schedule, and related to thisly, can be suitable for various ways in the past.
(a) part of Fig. 3 represents that the mixture being equivalent to a between content low dilution zone flows into LED 300 state, and (c) part of Fig. 3 represents that the mixture of c between the settling zone that the content that is equivalent to fluorophor is high flows into the state of LED 300.
Between settling zone, the situation of c can be initial situation about injecting in the allocation step of syringe, the situation that the step that between dilution zone, the situation of a can almost become sky for the inside at syringe is injected.In this case, compared with situation about injecting with valid interval b, the wavelength of the light sent from chip 320 can be changed in mutually different mode, because of but the value of chromaticity coordinates present in a different manner, thus required yield cannot be obtained.
Therefore, only select valid interval b to inject exactly, this is preventing the waste of each parts forming fluorophor and LED 300 and is improving in yield extremely important.Especially, when fluorophor, owing to being high price relatively, therefore, the aspect that boosts productivity that is set in of valid interval b has prior meaning accurately.
Due between this dilution zone between a and settling zone the amount of c can specify by different way according to the temperature of mixture, therefore, content related to this will be undertaken aftermentioned in more detail by comparing data.
Fig. 4 represents the schematic diagram according to the difference of the valid interval of the mixture of temperature.
The operational environment of ordinary dispensers is set as about 25 DEG C, and observes.Further, in the present invention, although be that benchmark is described with 50cc by the volume of the mixture of filling to syringe, the capacity of this syringe can be selected according to operational environment.
On the other hand, the syringe of Fig. 4 presents at body 100 in conjunction with nozzle needle portion 110, thus can carry out the state of distributing by below.
(a) part of Fig. 4 represents that the mixture having terminated the mixing of fluorophor and plastic packaging material is at normal temperatures filled in the state of body 100.At the temperature of 25 DEG C, as shown in the figure, even if after filling after a predetermined time, also there will not be too many precipitation capacity, relative to the amount of the mixture of about 38cc, major part can perform the function of valid interval b.
(b) part of Fig. 4 is for illustrating and the schematic diagram as the relation between the precipitation capacity in the temperature range of 30 DEG C to 40 DEG C of the temperature risen in the process stirred or mix.In the temperature range that temperature more rises than the normal temperature as operational environment, between settling zone, between c with dilution zone, a is separated about about 1g to 3g.
(c) part of Fig. 4 is for illustrating the schematic diagram of the relation of the precipitation capacity in the temperature range more than 40 DEG C, and between settling zone, between c and dilution zone, a presents about 3g to 5g.
In fact, between this settling zone, between c and dilution zone, a can present in symmetrical mode, and thus, as described below, if determine the sendout of c between settling zone, just can shape calculate pro rata and determine a between dilution zone therewith.
Like this, relative to the normal temperature as operational environment, temperature more rises, between the dilution zone on the upper strata of valid interval b a and lower floor settling zone between the amount of c more increase, and this means when temperature is raised, need the amount of the valid interval b injected before and after distributing operation in minimizing.
Although not shown, in the temperature below 25 DEG C, with (a) part not too large difference of Fig. 4.
Therefore, as an embodiment, the temperature of less than 25 DEG C is defined as the first temperature range by the present invention, and the temperature of 30 DEG C to 40 DEG C is defined as the second temperature range, the temperature of more than 40 DEG C is defined as the 3rd temperature range, using as separating of the benchmark of a between c and dilution zone between settling zone.But it should be noted that this setting benchmark can be different according to factors such as operational environments.
On the other hand, within the concept of the invention, as described below, due to the whipping process through fluorophor and plastic packaging material, the thus rising of occurrence temperature along with the conflict between molecule, the temperature risen by this way can be regarded as more than 30 DEG C.Therefore, be appreciated that as the blank between the first temperature range of initial condition and the second temperature range can in actual working environment out in the cold fall.
On the other hand, observe the shown position of Fig. 4, will find, the color of the measurement unit 200 under the state of the first temperature range and the color in the second temperature range and the 3rd temperature range show respectively in a different manner.
As mentioned above, measurement unit 200 comprises thermo-color, and this thermo-color can react along with temperature, as long as and the composition of thermo-color can present color between 25 DEG C to 45 DEG C changes.Further, preferably, in order to present the change of temperature at once, this temperature indicating compound or thermo-color use reversible thermally indicating material.
And, comprise the body 100 of above-mentioned temperature indicating compound as single temperature indicating composition, although can represent that the first temperature range is to the 3rd temperature range with different colors and color depth, but owing to having the situation being difficult to difference more than three kinds states, thus this measurement unit can comprise the first thermo-color for presenting the first temperature range, for presenting the second thermo-color of the second temperature range and the 3rd thermo-color for presenting the 3rd temperature range.The region presenting said temperature interval can circumferentially be distinguished mutually, and this also can be applicable to the measurement unit 200 comprising thermo-color.
In the case, each temperature indicating compound or thermo-color can have different colors or color depth to different temperature ranges, preferably, first thermo-color can have base colors under the temperature conditions of about 25 DEG C, second thermo-color can have base colors under the temperature conditions of about 30 DEG C, and the 3rd thermo-color can have base colors under the temperature conditions of about 40 DEG C.At this, the interval, front and back of each fiducial temperature can be understood to the scope of about 2 DEG C to about 3 DEG C.
Fig. 5 a to Fig. 5 c is relation in order to find out temperature and precipitation capacity in each temperature range clearly and the chart of the relation of temperature and light degree is shown.
Fig. 5 a is under the normal temperature condition as the first temperature range, represents the schematic diagram of the change of temperature in luminosity (radiation density) and the relation between the time.
The data of this chart are described in more detail by following table.Luminosity with μm/cm
2the unit of/nm represents.The change of this luminosity employs the data of c original allocation between settling zone, and using the volume of the syringe of Fig. 4 as benchmark.
In the first temperature range, namely, under the normal temperature condition of 25 DEG C, after from stirring, (0 minute) was to 115 minutes, and observed in units of every 5 minutes, observed result is, the change of luminosity stops about 0.0002 unit, and within the scope of observation time, whole region forms encapsulation part 330, and this can be utilized as significant data.
Therefore, in actual LED treatment process, when considering that major part obtained process within 115 minutes in once filling, this means in the first temperature range, namely, under the temperature conditions of less than 25 DEG C, as shown in (a) part of Fig. 4, the most of mixture being filled in syringe inside can be injected into effectively.
[table 2]
| Elapsed time | 0min | 5min | 10min | 15min | 20min | 25min |
| Luminosity/coordinate | 0.7916 | 0.7916 | 0.7916 | 0.7913 | 0.7915 | 0.7913 |
| Temperature | 25.1 | 25.3 | 25.4 | 25.2 | 25.3 | 25.2 |
| 30min | 35min | 40min | 45min | 50min | 55min | 60min |
| 0.7914 | 0.7912 | 0.7913 | 0.7916 | 0.7911 | 0.7913 | 0.7913 |
| 25.3 | 25.3 | 25.1 | 25.1 | 24.8 | 25.1 | 25.0 |
| 65min | 70min | 75min | 80min | 85min | 90min | 95min |
| 0.7916 | 0.7913 | 0.7914 | 0.7914 | 0.7915 | 0.7915 | 0.7916 |
| 25.2 | 25.3 | 25.2 | 25.3 | 25.0 | 25.3 | 25.3 |
| 100min | 105min | 110min | 115min | |||
| 0.7916 | 0.7918 | 0.7918 | 0.7918 | |||
| 25.1 | 25.3 | 25.0 | 25.2 |
Represent the change of the luminosity in the second temperature range in figure 5b, carry out describing in more detail in following table.
In the second temperature range, particularly, under the condition of 30 DEG C, after from stirring, (0 minute) was to 115 minutes, and observed in units of every 5 minutes, observed result is, the change of luminosity presents about 0.012.
To this means to have occurred between dilution zone c between a and settling zone, and get rid of this interval to realize injection.At this, confirm temperature from till 30 DEG C of the second temperature range about 25 DEG C of being down to as normal temperature, need about about 30 minutes.
[table 3]
| Elapsed time | 0min | 5min | 10min | 15min | 20min | 25min |
| Luminosity/coordinate | 0.7798 | 0.7853 | 0.7891 | 0.7913 | 0.7913 | 0.7914 |
| Temperature | 30.2 | 28.3 | 26.9 | 26.3 | 25.8 | 25.2 |
| 30min | 35min | 40min | 45min | 50min | 55min | 60min |
| 0.7916 | 0.7913 | 0.7916 | 0.7914 | 0.7912 | 0.7915 | 0.7915 |
| 25.1 | 24.9 | 25.0 | 25.2 | 25.2 | 25.1 | 25.2 |
| 65min | 70min | 75min | 80min | 85min | 90min | 95min |
| 0.7915 | 0.7918 | 0.7916 | 0.7915 | 0.7917 | 0.7915 | 0.7919 |
| 24.8 | 24.6 | 24.7 | 24.5 | 24.6 | 25.5 | 25.5 |
| 100min | 105min | 110min | 115min | |||
| 0.7916 | 0.7914 | 0.7915 | 0.7914 | |||
| 25.1 | 25.6 | 25.0 | 25.3 |
Represent the change of the luminosity in the 3rd temperature range in fig. 5 c, describe in more detail in following table.
In the 3rd temperature range, particularly, under the temperature conditions of 42 DEG C, after from stirring, (0 minute) was to 115 minutes, observed in units of every 5 minutes, and observed result is, the change of luminosity presents about 0.022.
To this means to have occurred between dilution zone c between a and settling zone, and get rid of this interval to realize injection, as mentioned above, the 3rd temperature range is the temperature higher than the second temperature range, like this, and high temperature is more between the settling zone presented.At this, confirm temperature from till 42 DEG C of the 3rd temperature range about 25 DEG C of being down to as normal temperature, need about about 50 minutes.
[table 4]
| Elapsed time | 0min | 5min | 10min | 15min | 20min | 25min |
| Luminosity/coordinate | 0.7698 | 0.7773 | 0.7833 | 0.7867 | 0.7887 | 0.7891 |
| Temperature | 42.3 | 42.0 | 37.6 | 32.7 | 29.8 | 28.2 |
| 30min | 35min | 40min | 45min | 50min | 55min | 60min |
| 0.7901 | 0.7897 | 0.7897 | 0.7900 | 0.7911 | 0.7911 | 0.7913 |
| 26.2 | 26.2 | 25.8 | 25.6 | 25.0 | 25.1 | 24.8 |
| 65min | 70min | 75min | 80min | 85min | 90min | 95min |
| 0.7916 | 0.7913 | 0.7914 | 0.7914 | 0.7915 | 0.7915 | 0.7916 |
| 24.8 | 24.9 | 25.0 | 25.1 | 24.6 | 25.5 | 25.5 |
| 100min | 105min | 110min | 115min | |||
| 0.7916 | 0.7918 | 0.7918 | 0.7918 | |||
| 25.3 | 25.6 | 25.0 | 24.8 |
Fig. 6 is the flow chart of the preparation method that the LED utilizing LED syringe to prepare the temperature display function of the present invention had according to above-mentioned item is shown.
Fluorophor and plastic packaging material is suitable for by the predetermined ratio of syringe, thus via syringe filling step (S100), and can from the whipping step (S200) that carried out stirring the mixture, and in this course, heat can be there is because of the conflict between molecule, and along with the rising of temperature, this is identical with foregoing.
According to factors such as mixing ratio, capacity and mixings time, the lifting range of this temperature is that benchmark presents predetermined difference with normal temperature, and the rising of this temperature confirms by measurement unit 200.Thus, user of service confirms temperature (S310) by the color change being located at the measurement unit 200 of syringe.The confirmation of this temperature is realized by the invertibity sex change of the thermo-color contained by measurement unit 200, and as mentioned above, thermo-color can be suitable for present predetermined color or color depth accordingly to the 3rd temperature range with the first temperature range the first thermo-color to the 3rd thermo-color.
At this, the confirmation of more than twice of temperature when temperature is really approved to comprise to the initial temperature after just stirring and arrives normal temperature.That is, in order to the difference of c between a and settling zone between dilution zone, the time delay till needing the temperature of the mixture of syringe inside to drop to normal temperature, and this item is as the content described in Fig. 5 b to Fig. 5 c and table 2 to table 3.
If realize the confirmation (S310) of temperature like this, then realize the setting (S320) of c between a and settling zone between dilution zone.Between this dilution zone between a and settling zone c as above-mentioned example, the top layer and the layer bottom of body 100 can be distinguished with 1cc to 2cc in the second temperature range, distinguish the top layer and the layer bottom of body 100 in the 3rd temperature range with 3cc to 5cc, but this difference environmentally and by different way can determine.
If to determine between dilution zone c between a and settling zone like this, then before being applicable to LED 300, c between settling zone is preferentially distributed, thus via the discharge step (S330) between settling zone, afterwards, LED 300 is suitable for realize the injection (S400) of valid interval b.
Wherein, in setting procedure (S320) between dilution zone and between settling zone, owing to specifying the border of a between valid interval b and dilution zone in advance, and till this injection is only formed to above-mentioned border, therefore, occur defective hardly, and the fluorophor wasted of energy minimization and form the parts of LED.
Operation as above can proceed to continue to carry out in the operation of distributing in a syringe, and can after the initial configuration, only realize once setting.Such as, even if syringe does not arrive normal temperature, also based on above-mentioned data, according in the temperature confirmed after official hour and precipitation capacity, any sendout of c between settling zone can be decided.
According to the preparation method according to the LED syringe with temperature display function of the present invention and the LED utilizing this syringe as above, the valid interval of the mixture of fluorophor and plastic packaging material can be set according to the difference of temperature, can select thus and be suitable for the mixture interval in best syringe, thus compared with the past, the remarkable rising of yield can be expected.
Further, due to the waste of the parts forming fluorophor and LED can be prevented, make to have and can not only boost productivity, and unnecessary waste can also be reduced and reduce the advantage of production cost.
Above, based on embodiment and accompanying drawing to invention has been detailed description.But scope of the present invention is not limited to above embodiment and accompanying drawing, the content of scope of the present invention only described in claims and limiting.
Claims (8)
1. a LED package syringe, wherein,
Comprise:
Body, contains the mixture of fluorophor and plastic packaging material in inside, and discharges from downside; And
Display part, is made up of temperature indicating compound, when above-mentioned body is shaping, mixes mutually with article shaped, and shows the temperature of said mixture by the color change of body,
Above-mentioned display part has temperature display function, so that according to the color presented by the mixture through stirring, between the dilution zone of the superiors of understanding body and between undermost settling zone.
2. LED package syringe according to claim 1, wherein, above-mentioned display part shows the first temperature range, the second temperature range and the 3rd temperature range with different colors or color depth, above-mentioned first temperature range is the temperature range of below the normal temperature of mixture, above-mentioned second temperature range is the temperature range between 30 DEG C to 40 DEG C, and above-mentioned 3rd temperature range is the temperature range of more than 40 DEG C.
3. LED package syringe according to claim 2 wherein, is 0.2% ~ 3.0% to the mixed weight ratio of the article shaped of above-mentioned temperature indicating compound.
4. LED package syringe according to claim 2, wherein, above-mentioned temperature indicating compound presents color change in the scope of 25 DEG C to 45 DEG C.
5. LED package syringe according to claim 1, wherein, along with the temperature of the mixture after stirring raises, above-mentioned display part show needle for valid interval dilution zone between and ratio between settling zone increase, and the degree that the valid interval injected reduces.
6. LED package syringe according to claim 1, wherein, distributed in advance according to the amount between the settling zone that the display of above-mentioned display part decides, and flow into LED package, and till being injected into the border between valid interval and dilution zone.
7. LED package syringe according to claim 2, wherein, also comprises antistatic agent, and it mixes when above-mentioned article shaped is shaping, and prevents electrostatic to allow to realize the quantitative cooperation of fluorophor and plastic packaging material.
8. utilize a preparation method for the LED package of the syringe according to any one of claim 1 to 7, wherein, comprising:
Syringe filling step, fluorophor and plastic packaging material are applicable to body;
Whipping step, is stirred the mixture by blender;
Temperature confirms step, is confirmed the temperature of the mixture through stirring by the display part of body;
Display by display part decides between dilution zone, between settling zone and the step of the amount of valid interval;
Discharge step between settling zone, distribute in advance between settling zone; And
Valid interval implantation step, to LED package, valid interval is injected into.
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| KR20130146094A KR101474376B1 (en) | 2013-11-28 | 2013-11-28 | Syringe for led package having temperature indicating functions and manufacturing method using the same |
| KR10-2013-0146094 | 2013-11-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100002483A (en) * | 2008-06-30 | 2010-01-07 | 서울반도체 주식회사 | Suspension dispensing apparatus and method for manufacturing leds |
| KR200461560Y1 (en) * | 2011-11-29 | 2012-07-19 | 박정석 | a Sit-ups apparatus |
| JP2012160594A (en) * | 2011-02-01 | 2012-08-23 | Panasonic Corp | Filling device and checking method thereof |
| CN102959744A (en) * | 2011-06-29 | 2013-03-06 | 松下电器产业株式会社 | Method for manufacturing light-emitting element and light-emitting element manufacturing device |
| US20130149801A1 (en) * | 2010-08-17 | 2013-06-13 | Konica Minolta Advanced Layers, Inc. | Method of manufacturing light-emitting device |
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- 2013-11-28 KR KR20130146094A patent/KR101474376B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100002483A (en) * | 2008-06-30 | 2010-01-07 | 서울반도체 주식회사 | Suspension dispensing apparatus and method for manufacturing leds |
| US20130149801A1 (en) * | 2010-08-17 | 2013-06-13 | Konica Minolta Advanced Layers, Inc. | Method of manufacturing light-emitting device |
| JP2012160594A (en) * | 2011-02-01 | 2012-08-23 | Panasonic Corp | Filling device and checking method thereof |
| CN102959744A (en) * | 2011-06-29 | 2013-03-06 | 松下电器产业株式会社 | Method for manufacturing light-emitting element and light-emitting element manufacturing device |
| KR200461560Y1 (en) * | 2011-11-29 | 2012-07-19 | 박정석 | a Sit-ups apparatus |
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