KR101474376B1 - Syringe for led package having temperature indicating functions and manufacturing method using the same - Google Patents

Abstract

The present invention relates to a syringe for an LED package having a temperature indicating function and a method for manufacturing an LED package using the same, capable of: visually identifying a temperature and a state of a phosphor mixture; and maximizing reliability in a production process by allowing an encapsulating material and a phosphor to search for and use optimally mixed space in the syringe of a dispenser. The syringe for manufacturing an LED package, which is mounted on the dispenser of an LED manufacturing device and has a temperature indicating function, comprises: 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 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. Therefore, the precipitation of the phosphor can be accurately identified and determined by the temperature, thereby improving accuracy of processes and increasing a yield rate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a syringe for an LED package having a temperature display function and a method of manufacturing an LED package using the syringe.

The present invention relates to an LED package, more specifically, to visually identify a temperature and a state of a phosphor mixture, and by using the sealant and the phosphor to find and use an optimal mixture section within a syringe of a dispenser, To a syringe for an LED package having a temperature display function for maximizing normal reliability and a method of manufacturing an LED package using the syringe.

A light emitting diode (hereinafter, referred to as LED), which is a light emitting device, is small in size, high in efficiency, capable of realizing clear and various colors of light emission, excellent in driving characteristics and excellent in repetition of vibration and on-off operation.

LEDs are used as light sources of various colors because the light emitting sources can be constituted by changing compound semiconductor materials such as GaAs, AlGaAs, GaN, InGaN and AlGaInP. Such LEDs are being actively studied for improving the performance and reliability of LED packages as demand for high output and high brightness performance for illumination increases.

In order to improve the performance of LED products, it is required to fabricate an LED package having an excellent optical efficiency as well as an LED package that efficiently extracts light, has excellent color purity, and has uniform characteristics among products.

In order to realize white light through the LED, a fluorescent layer in which a yellow phosphor, a green phosphor and a red phosphor are mixed is formed on a blue or ultraviolet LED chip. Such a fluorescent layer is formed by applying a fluorophore mixed with a fluorescent material such as an epoxy resin or a silicone resin onto a chip using a dispenser, followed by drying the LED package.

The light quality of such LEDs is affected not only by the properties of the phosphors themselves but also by the distribution pattern of the phosphors.

There is a problem that it is considerably difficult to uniformly control the spatial distribution of the fluorescent material in the resin material in the method of injecting the mixture of the transparent resin and the fluorescent material powder into the cup of the package in which the LED chip is mounted. Due to such a problem, the density of phosphors applied on the LED chip is unevenly formed, so that the color coordinate deviation of the output light is significant, and color separation or color unevenness easily occurs.

1 is a view showing a conventional LED package manufacturing process.

Referring to FIG. 1 (a), a package body 11 in which a substrate 12 is disposed is provided at a predetermined production path or position. The LED chip 13 is mounted on the top of the substrate 12 and the substrate 12 and the LED chip 13 are connected by the wire or wire 14. [

The resin material 15 mixed with the phosphor 16 is injected into a predetermined space of the package body 11 as shown in FIG.

The mixed fluid of the injected phosphor 16 and the resin material 15 is cured in the state that the LED chip 13 is sealed inside, and the process of the LED package proceeds.

Various methods can be applied to form the phosphor resin layer in the manufacturing process of the LED package, and a method using a dispenser is often used.

Such a dispenser forms a resin layer by discharging a predetermined amount of a mixture of a fluorescent material and a resin material around a LED chip through a syringe, and the fluorescent material in a state of being mixed with the resin material is discharged through the syringe As the precipitation progresses, the injection process must be completed within a short time.

The precipitation phenomenon of the phosphor particles adversely affects characteristics such as color coordinates of the product. Therefore, even when the same dispenser is used in the same process, deviation occurs between the color coordinates of the LED packages, and the LED package having a large deviation in the standard color coordinates can be regarded as defective.

Specifically, due to the precipitation phenomenon, the upper portion of the syringe has a portion in which the mixing ratio of the phosphor is significantly lower than the proper ratio and a portion in which the mixing ratio is higher in the lower layer. The upper and lower layers having different mixing ratios cause defects in the injection process, leading to a reduction in the yield of the process.

In order to reduce the defect rate in the manufacturing process of the LED package, the uniformity of the mixed state of the resin material and the fluorescent material is an important factor. However, it is virtually impossible to visually identify the mixture state of the resin material and the fluorescent material. However, this method is expensive and time consuming.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems described above, and it is an object of the present invention to provide a method and apparatus for instantly identifying a mixed state by temperature confirmation so as to uniformly inject a phosphor in a manufacturing process of an LED package, And to provide a syringe for an LED package having a temperature display function capable of maximizing the yield of the LED package by minimizing the defective rate by using only the LED package.

Another object of the present invention is to provide a syringe for an LED package having a configuration capable of effectively injecting a sealing agent in a stirred state and a phosphor in a fixed amount.

The present invention relates to a syringe provided in a dispenser of an LED manufacturing apparatus, comprising: a syringe having a body in which a mixture of a fluorescent substance and an encapsulating agent is contained and discharged to the lower side; And a temperature display function in which a dilution section of the uppermost layer of the body section and a lowest sedimentation section are determined according to a temperature represented by a change in hue on the surface of the body part of the agitated mixture To provide a syringe for manufacturing an LED package. Accordingly, since the amount of precipitated phosphor by temperature can be accurately determined and determined, the accuracy of the process is improved and the yield is increased.

The thion compound may be a resin that is mixed with a molding during injection molding. Thus, a separate additional process is minimized.

It is preferable that the weight ratio of the mixture to the molded article of the Zinc compound is from 0.2% to 3.0%.

The thionous paint includes a first thionous paint indicating a temperature in a first temperature zone, a second thionous paint indicating a temperature in a second temperature zone, and a third thione coating indicating a temperature in a third temperature zone can do. Therefore, the temperature discrimination performance is excellent.

The thion compound preferably exhibits a color change between 25 캜 and 45 캜. Therefore, it is possible to increase the yield by setting the temperature distribution optimized for the working environment.

Further, if the temperature of the mixture immediately after stirring is increased, the ratio of the dilution section and the precipitation section may be increased with respect to the effective section. Therefore, it is possible to accurately identify the difference of these ratios by confirming the temperature.

Also, the amount of the settling interval determined according to the temperature may be pre-dispensed and injected into the LED package up to the boundary of the validity interval and the dilution interval. Thus, the waste of each member and the phosphor is minimized.

The body part may further include an antistatic agent to prevent static electricity so that a quantity of the fluorescent material and the sealing agent can be mixed when molding the molding. Thus, efficiency in the LED production process is improved.

According to another aspect of the present invention, there is provided a method of manufacturing an LED package using the syringe, comprising the steps of: charging a syringe with a phosphor and a sealing agent applied to the body; stirring the mixture through a stirrer; Determining a dilution interval and a settling interval through the identified temperature and elapsed time, a sedimentation interval discharging step of dispensing the sedimentation interval in advance, a valid interval injecting step of injecting a valid interval into the LED package, The method comprising the steps of: Therefore, there is an advantage of a remarkable increase in the yield.

Further, in the temperature checking step, the temperature immediately after the stirring and the temperature until the temperature is lowered to the normal temperature can be visually confirmed through the color or the color density of the metering part. Therefore, it is possible to respond immediately to the manufacturing process.

According to the syringe for an LED package having a temperature display function and the method for manufacturing an LED package using the same according to the present invention, an effective section of a mixture of a phosphor and an encapsulant is set according to a temperature difference, It is possible to expect a remarkable increase in the yield compared to the prior art.

In addition, it is possible to prevent the waste of the phosphor and the member constituting the LED package, thereby increasing the productivity and reducing the unnecessary wasted production cost.

1 shows a conventional LED package manufacturing process.
2 is a side sectional view showing a syringe for an LED package having a temperature display function according to the present invention.
3 is a diagram illustrating an LED package and a LED package for a LED package having a temperature display function according to the present invention.
4 is a diagram showing the difference in the effective interval of the mixture according to the temperature.
5A to 5C are graphs showing the relationship between temperature, time, and luminous intensity in each temperature section.
6 is a flowchart showing a method of manufacturing an LED package according to the present invention.

Hereinafter, a syringe for an LED package having a temperature display function according to the present invention and a method for manufacturing an LED package using the syringe will be described in detail with reference to the accompanying drawings.

2 is a side view of a syringe for an LED package having a temperature display function according to the present invention.

The present invention basically comprises a body part 100 provided in a dispenser of an LED manufacturing apparatus, the body part 100 containing therein a mixture of a fluorescent substance and an encapsulating agent and discharging the mixture to the lower part, And a display compound which mixes and displays the temperature of the mixture as a hue change of the body part 100.

Such a syringe may be coupled to a dispenser disposed on a predetermined transport path through which the package body of the LED package is transported, and desirably disposable so as to allow for the filling and exchange of a mixture of the phosphor and the encapsulant.

Various types of equipment can be applied to the LED manufacturing apparatus in which the syringe of the present invention is disposed, and the injection form of the syringe can also be applied to a selected method such as direct discharge type or indirect discharge type.

The body part 100 of the syringe may be made of a transparent material so that the inner state of the syringe can be displayed externally. However, an opening (not shown) may be formed on the upper side to fill the mixture And a predetermined nozzle is formed on the lower side so as to inject the selected amount. The body 100 may be made of a resin material which can be selectively formed and which can be injection molded in consideration of productivity.

However, as will be described later, the dilution interval and / or the settling interval are visually determined through the capacity determined from the outside of the syringe 100 and the dispensing interval is not set in advance, And the metering unit 200 displays the measurement result so that the material of the body 100 is transparent.

Further, as a constitution of the mixture contained in the body part 100, the phosphor may be a red, green, blue or yellow series phosphor having various compositions which can be known or predicted at present.

Further, as another constitution of the mixture, the encapsulating agent may be a resin such as epoxy or silicone excellent in light transmittance and curability, but is not limited thereto.

The mixture of the fluorescent material encapsulated in the syringe and the encapsulant may precipitate due to the difference in specific gravity over time and may cause defects depending on the interval of the mixture to be injected into the package body. As shown above. The present invention provides a method of manufacturing an LED package that can determine the degree of precipitation of such a fluorescent substance as well as the temperature of the mixture as time becomes a major factor, thereby improving the yield in correlation with temperature .

In the concept of the present invention, the body part 100 includes a zeolite compound, thereby displaying a change in the internal temperature on the whole surface as a hue.

Alternatively, the body part 100 may be formed by injecting a zeolite compound into the molding of the body part 100. However, according to another embodiment of the present invention, the metering part 200 may be formed of a zeolite The temperature of the mixture can be visually displayed by changing the hue of the predetermined portion of the metering unit 200. [ The metering unit 200 may be made of a material including a thermopaint or a thion paint that responds to changes in color depending on the temperature.

The metering unit 200 may be disposed in such a manner that the metering unit 200 may be applied to the outer surface of the body 100 and may be disposed in the form of a film mixed with a material such as resin or fiber have.

As such a zeolite or zeolite, a metal complex salt, a cholesteric liquid crystal, a metamochol, a crystal violet lactone or the like can be applied. As a representative reversible zeolite, Ag 2 HgI 4 and Cu 2 Hg I 4, which are temperature indicating compositions, May be used or mixed at a certain ratio and blended with a desired color paint to cause the color to change at a specific temperature, but not always limited thereto. As described above, since the amount of precipitation changes according to the temperature and time of the mixture, it is possible to divide the temperature interval and implement the difference as a difference in color with respect to the set temperature interval. That is, the amount of the precipitated phosphor or the amount of the phosphor to be precipitated can be displayed as a difference in color.

In the concept of the present invention, since the syringe 100 is repeatedly used to some extent, it is preferable to use a material having excellent reversibility rather than irreversible or sub-irreversible thion material so as to be able to detect a constant temperature change.

As described later, since the phosphor and encapsulant are applied to the inside of the body 100 in the manufacturing process of the LED package and the temperature generated in the stirring step for uniform mixing is relatively increased, It should be noted that the identification of the change in temperature in the state of being placed in the dispenser may be more meaningful.

The above-mentioned thione compound is used for molding the body part 100, and the molding is preferably performed by an injection molding method. The compound can be classified as follows according to the characteristics of the specific compound.

division Zion powder Zion slurry Zion Master Batch Stability powder Liquid Solid of particle type Oil-based ink △ △ × Water-based ink × ○ × Injection and blow molding △ △ ○

Here, the indication of 'x' indicates that the application is unsuitable, the indication 'o' is appropriate, and the indication 'Δ' is possible.

The fine-grained state powder can be used in the case of silk screen ink or small-volume injection. Such a Zion powder can be applied to plastic surface coatings containing ABS, PET, Polypropylene, Polystyrene, PVC, PVA and the like. At this time, the mixing ratio to the oil solvent may be preferably 15% to 30%.

In the case of Zion slurry, it is made in a liquid phase and has a property of being well incorporated into aqueous ink or water-based paint. For Zion slurry, the solids content can be determined at approximately 45% to 50%. Such a Zion slurry is suitable for printing, coating, spraying or dyeing a water-soluble screen, and therefore can be suitably applied as a predetermined coating or film in the metering section 200 according to another embodiment of the present invention. The Zion slurry can be applied to screen, gravure flexographic printing on vinyl, cloth, paper, film, glass, ceramics, wood and the like. In this case, the mixing ratio to the aqueous solvent may preferably be 15% to 30%.

The zeolite powder or zeolite slurry as described above is preferably used as a zeolite coating or film applied to the metering section 200. However, the use of such a zeolite powder as a zeolite compound used for injection molding is not excluded.

In the case of a master batch, the Zion master batch is preferably applied in processing such as extrusion or injection molding, and the Zion compound is injected into the molding material as the base plastic raw material. It can be supplied in the form of a primary processed to the size of rice grains, and in the primary processed form, the proportion of the zeotropic pigment is preferably about 12% to 18%. In the present invention, the zione compound can be understood as meaning particles in a primary processed form.

At this time, the molding used for the injection may be selected from compounds such as PE, PP, PS, ABS, PET, polystyrene, PVC, PVA, polyester and nylon. The proportion of the zeolite compound in the molded product is preferably determined between 0.2% and 3%.

When considering injection molding, the zeolite compound of the present invention is presented as an optimum embodiment comprising the above-mentioned Zeon master batch.

In the state where the mixture of the phosphor and the encapsulating agent is agitated to some extent and uniformly mixed, precipitation occurs over time in the inside of the body 100, and the precipitation occurs in the body part 100 in the height direction of the body part 100 High and low mixing ratios are distinguished.

The concept of this section is further illustrated in FIG. 2, in which the precipitation section (c) having the lowest mixing ratio and the diluting section (a) having the lowest mixing ratio of the uppermost layer, and the effective section b).

The sections may not be visually distinguished and may be defined as having a relatively predetermined mixing ratio section, and the effective section (b) may be a mixture ratio that does not cause a significant error in the color coordinates of the LED package Can be regarded as a section, and the dilution section (a) and the precipitation section (c) can be understood as a section that influences the yield.

Meanwhile, the material of the body 100 of the syringe may be made of a selected material. Due to the nature of the resin material, static electricity may be generated due to the friction, which may deteriorate the accuracy of the mixing process. In order to improve the accuracy of the mixing, the body part 100 may be subjected to a conductive treatment for preventing static electricity as an embodiment, and a master batch including an antistatic agent may be applied. As such an example, a method of mixing a polymer resin having electrostatic dispersing ability can be considered, and a polyether-based polymer aliphatic diisocyanate compound containing ethylene oxide as a polymer resin and a polyether-based polymer aliphatic diisocyanate compound containing a primary hydroxyl group or an amine group, A thermoplastic polyurethane or polyurea prepared by reacting a chain extender of 10 may be applied.

Further, as described later, it takes about 100 minutes or so for the temperature to fall from the predetermined temperature range to the normal temperature. In order to further improve the discharge performance of the temperature, the material for improving the thermal conductivity . ≪ / RTI >

FIG. 3 is a view showing the state of the LED package according to the section of the mixing ratio in order to compare them.

As described above, when the main body 310 is provided, the chip 320 is disposed on the upper layer of the LED package 300, and the sealed portion 330 is formed by injecting the mixture after the preparation of the predetermined wire connection is completed do.

The sealing part 330 may be completed through a predetermined curing step, and various conventional methods can be applied in this regard.

3 (a) shows a state in which the mixture corresponding to the dilution section (a) having a low content of the mixture is injected into the LED package 300, and FIG. 3 (c) ) Is injected into the LED package (300).

In the case of the sedimentation period (c), the syringe is initially injected in the dispensing stage. In the dilution interval (a), the syringe may be injected in the stage where the interior of the syringe is almost emptied. In this case, since the wavelengths of the light emitted from the chip 320 are different from each other as compared with the case where the effective period (b) is injected, the values of the color coordinates are different and the desired yield can not be obtained.

Therefore, it is important to select and inject only the effective section (b) accurately to prevent the waste of the phosphor and the LED package 300 and to improve the yield. In particular, since the phosphor is relatively expensive, the setting of the accurate effective period (b) is more important for the improvement of the productivity.

Since the amount of the dilution interval (a) and the precipitation interval (c) can be determined differently depending on the temperature of the mixture, the comparison data will be described in more detail later.

Fig. 4 is a diagram showing the difference in effective interval of the mixture according to the temperature. Fig.

Let's look at a typical dispenser working environment at about 25 ° C. In the present invention, the volume of the syringe filled in the syringe is 50 cc, but the capacity of the syringe may be selected depending on the working environment.

Meanwhile, in the syringe of FIG. 4, the needle part 110 is coupled to the body part 100, and the dispensing is possible through the downward direction.

4 (a) shows a state in which the mixture in which the phosphor and encapsulant are mixed at room temperature is filled in the body part 100. Fig. At a temperature of 25 캜, the amount of sedimentation did not appear large even after a predetermined time elapsed from the charging as shown in the drawing, and most of the amount of the mixture of about 38 cc can function as the effective section (b).

FIG. 4 (b) is a graph showing the relationship between the elevated temperature in the course of stirring and mixing and the amount of precipitation in the temperature range of 30 ° C. to 40 ° C. FIG. The precipitation section (c) and the dilution section (a) were separated by about 1 g to 3 g in the temperature range in which the temperature was higher than the normal temperature of the working environment.

Fig. 4 (c) shows the relationship between the precipitation amount in the temperature section of 40 캜 or more, and the precipitation section (c) and the dilution section (a) were about 3 g to 5 g.

The precipitation interval c and the dilution interval a may appear substantially symmetrical. Accordingly, when the dispensing amount of the precipitation interval c is determined as described below, the dilution interval a is calculated in proportion thereto. .

As described above, the amount of the dilution section (a) of the upper layer and the precipitation section (c) of the lower layer of the effective section (b) gradually increased as the temperature was increased with respect to the room temperature as the working environment. Which means that the amount of effective section (b) to be injected before and after is reduced.

Although not shown, the temperature is not significantly different from (a) in FIG. 4 at a temperature of 25 ° C or lower.

Therefore, the present invention is defined as a reference for separating the precipitation section (c) and the dilution section (a) as a first temperature section and a temperature of 25 ° C or less as a reference, and a temperature range of 30 ° C to 40 ° C And the third temperature range is defined as a temperature of 40 DEG C or higher. However, it should be noted that such a setting criterion can be determined differently depending on factors such as the working environment.

On the other hand, in the concept of the present invention, as described later, the fluorescent substance and the encapsulating agent are subjected to the stirring step, so that the temperature rises due to collision between molecules, and the elevated temperature can be understood to be 30 ° C or more. Therefore, it can be understood that the blank space between the first temperature interval and the second temperature interval in the initial state can be ignored in the actual working environment.

4, the hue of the metering unit 200 in the first temperature interval, the hue in the second temperature interval, and the hue in the third temperature interval are displayed differently.

As shown in the above example, the metering unit 200 includes a thionous paint, and the thionous paint reacts with the temperature. The composition of the thionous paint may suffice to exhibit a color change between 25 ° C and 45 ° C. In addition, it is preferable to use a reversible ZrO 2 material for the ZrO 2 compound or zeolite to immediately exhibit a change in temperature.

In addition, the body part 100 including the Zinc compound may represent the first to third temperature sections as different colors or color densities as a single Zinc composition, but it may be difficult to distinguish three or more states The metering section may include a third thionous paint containing a first thionous paint showing a first temperature range and a second thionous paint showing a second temperature range and showing a third temperature range. The zones indicating the temperature zones may be distinguished from each other in the circumferential direction, and may also be applied to the metering unit 200 including the zinc paint.

At this time, each of the ZION compounds or ZION coatings may have different colors or color densities for different temperature ranges, preferably the first ZION coating has a reference color at a temperature around 25 DEG C, The paint may have a predetermined reference hue at a temperature around 30 ° C, and the third yellow paint may have a predetermined reference hue at a temperature around 40 ° C. Here, the sections before and after the respective reference temperatures can be understood to be in the range of about 2 캜 to 3 캜.

5A to 5C are graphs showing the relationship between temperature and luminous intensity in order to clarify the relationship between the temperature and the precipitation amount in each temperature range.

FIG. 5A is a diagram showing the change in temperature in relation to the luminous intensity (radiation density) at room temperature in the first temperature section and the time. FIG.

The data of these graphs are described in more detail in the table below. The luminous intensity is expressed in units of μm / cm ² / nm. This change in luminous intensity was based on the volume of the syringe of FIG. 4, which was initially dispensed in the settling zone (c).

The change in luminous intensity as a unit of 5 minutes from the first temperature section, that is, at a room temperature of 25 ° C immediately after the stirring (0 minutes) to 115 minutes was as much as 0.0002 unit, ) Can be used as meaningful data.

Therefore, considering that most of the LED packages are processed in a single charge process within 115 minutes in the actual LED package processing process, most of the mixture charged in the syringe as shown in FIG. 4 (a) Lt; / RTI > can be injected effectively.

Elapsed time 0 minutes 5 minutes 10 minutes 15 minutes 20 minutes 25 minutes Luminance / Coordinates 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 30 minutes 35 minutes 40 minutes 45 minutes 50 minutes 55 minutes 60 minutes 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 65 minutes 70 minutes 75 minutes 80 minutes 85 minutes 90 minutes 95 minutes 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 25.3 100 minutes 105 minutes 110 minutes 115 minutes 0.7916 0.7918 0.7918 0.7918 25.1 25.3 25.0 25.2

Figure 5b shows the change in luminous intensity over the second temperature interval, which is described in more detail in the table below.

The second temperature range Specifically, the change in luminous intensity as a unit of 5 minutes from 30 ° C to immediately after the stirring (0 minutes) to 115 minutes was about 0.012.

This means that the dilution interval (a) and the settling interval (c) are shown, and the infusion is performed by excluding the interval. Here, it is confirmed that it takes about 30 minutes to lower the temperature to 30 占 폚, which is the second temperature range, to about 25 占 폚, which is the room temperature.

Elapsed time 0 minutes 5 minutes 10 minutes 15 minutes 20 minutes 25 minutes Luminance / Coordinates 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 30 minutes 35 minutes 40 minutes 45 minutes 50 minutes 55 minutes 60 minutes 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 65 minutes 70 minutes 75 minutes 80 minutes 85 minutes 90 minutes 95 minutes 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 25.5 100 minutes 105 minutes 110 minutes 115 minutes 0.7916 0.7914 0.7915 0.7914 25.1 25.6 25.0 25.3

FIG. 5C shows the change in luminous intensity in the third temperature range and is described in more detail in the table below.

Third Temperature Range Specifically, the change in luminous intensity was observed at a temperature of 42 ° C as a unit of 5 minutes from immediately after the stirring (0 minutes) to 115 minutes.

This means that the dilution interval (a) and the settling interval (c) are present, and the injection is performed by excluding the interval. As described above, the third temperature interval is higher than the second temperature interval, The higher the temperature, the more sedimentation zone appears. Here, it is confirmed that it takes about 50 minutes to lower the temperature to 42 占 폚, which is the third temperature range, to about 25 占 폚, which is the room temperature.

Elapsed time 0 minutes 5 minutes 10 minutes 15 minutes 20 minutes 25 minutes Luminance / Coordinates 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 30 minutes 35 minutes 40 minutes 45 minutes 50 minutes 55 minutes 60 minutes 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 65 minutes 70 minutes 75 minutes 80 minutes 85 minutes 90 minutes 95 minutes 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 25.5 100 minutes 105 minutes 110 minutes 115 minutes 0.7916 0.7918 0.7918 0.7918 25.3 25.6 25.0 24.8

6 is a flowchart illustrating a process of manufacturing an LED package using a syringe for an LED package having a temperature display function according to the present invention.

It can be started from the mixture stirring step (S200) of applying the syringe filling step (S100) by applying the fluorescent substance and the sealing agent at a predetermined ratio, and in this process, heat is generated due to the collision between the molecules, As described above.

Depending on such factors as the mixing ratio, the capacity, and the stirring time, the range of the increase of the temperature is a predetermined difference based on the room temperature, and the increase of the temperature can be confirmed through the metering unit 200. Accordingly, the user confirms the temperature by changing the color of the metering unit 200 provided in the syringe (S310). The determination of such a temperature is performed through reversible denaturation of the zeotropic coating material contained in the metering section 200. As described above, the zeolin coating material exhibits a predetermined color or color density corresponding to the first to third temperature sections The first to third coating compositions may be applied.

Here, the confirmation of the temperature may include the confirmation of the initial temperature immediately after the stirring and the temperature at the room temperature twice or more. That is, there is a delay in the temperature of the mixture in the syringe to the room temperature for the distinction between the dilution interval (a) and the settling interval (c), and these are shown in FIGS. 5B to 5C and Tables 2 to 3 As described.

When the temperature is confirmed (S310), the dilution interval (a) and the settling interval (c) are set (S320). The diluting section a and the settling section c are used to distinguish the uppermost layer and the lowermost layer of the body section 100 from the first temperature section by 1 cc to 2 cc and the third section from 3 cc to 5 cc , But these distinctions can be determined differently depending on the environment.

If the dilution interval a and the precipitation interval c are determined, the sedimentation interval c is preferentially dispensed prior to application to the LED package 300 to discharge the sedimentation interval S330, The package 300 is applied to inject the valid section b (S400).

Here, since the boundary between the effective section (b) and the dilution section (a) is determined beforehand in the step of setting the dilution section and the settling section (S320), this injection is performed only up to the boundary, And the members constituting the LED can be minimized.

Such a process may be continuously performed in the middle of the process of continuing dispensing in one syringe, and only one setting may be performed after the initial placement. For example, even if the syringe does not reach room temperature, it is possible to determine an arbitrary dispensing amount of the settling interval (c) based on the temperature and the settling amount confirmed after a predetermined elapsed time based on the data.

According to the syringe for an LED package having the temperature display function according to the present invention and the method for manufacturing an LED package using the same, the effective interval of the mixture of the phosphor and the sealing agent is set according to the temperature difference, Since the mixture section can be selected and applied, a remarkable increase in the yield can be expected as compared with the conventional method.

In addition, it is possible to prevent the waste of the phosphor and the member constituting the LED package, thereby increasing the productivity and reducing the unnecessary wasted production cost.

In the foregoing, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

100 ... syringe 200 ... metering unit
210 ... capacity measuring unit 300 ... LED package
310 ... body 320 ... chip
330 ... encapsulation part

Claims (9)

A syringe provided in a dispenser of an LED manufacturing apparatus,
A body part in which a mixture of the fluorescent material and the sealing agent is accommodated and discharged downward; And
And a temperature compound disposed in the body portion to display the temperature of the mixture as a color change,
The dilution section of the uppermost layer of the body part and the lowest sedimentation section are determined according to the temperature, which is represented by the color change on the surface of the body part of the agitated mixture,
Characterized in that the amount of the settling section determined according to the temperature is pre-dispensed and can be injected into the LED package up to the boundary of the valid section and the dilution section.
The method according to claim 1,
The thion compound,
Wherein the syringe is a resin which is mixed with a molding during injection molding.
3. The method of claim 2,
Wherein the weight ratio of the mixture to the molding of the Zinc compound is 0.2% to 3.0%.
3. The method of claim 2,
The thion compound,
And a color change is exhibited between 25 占 폚 and 45 占 폚.
5. The method of claim 4,
Characterized in that the ratio of the diluting section and the settling section is increased with respect to the effective section when the temperature of the mixture immediately after the stirring is increased.
The method according to claim 1,
The thion compound,
Wherein the syringe is a thion paint contained in a metering part of the body part.
3. The method of claim 2,
And an antistatic agent to prevent static electricity so as to allow mixing of the fluorescent material and the encapsulant in a predetermined amount when the molding is molded.
8. A method of manufacturing an LED package using a syringe according to any one of claims 1 to 7,
A syringe filling step in which the phosphor and the sealing agent are applied to the body part;
Stirring the mixture through a stirrer;
A temperature checking step in which the temperature of the agitated mixture is confirmed through the outer surface of the body part;
Determining a dilution interval and a sedimentation interval through the confirmed temperature and elapsed time;
A sedimentation section discharging step of dispensing the sedimentation section in advance; And
And a valid section injecting step of injecting an effective section into the LED package.
9. The method of claim 8,
The temperature checking step may include:
Wherein the temperature immediately after the agitation and the temperature until the temperature is lowered to the room temperature are visually confirmed in accordance with the hue change of the body part.

Images