KR20160008959A - Apparatus for making wavelength conversion part and method of making avelength conversion part using the same - Google Patents

Abstract

Disclosed are a wavelength conversion unit manufacturing apparatus and a method for manufacturing a wavelength conversion unit using the same. The wavelength conversion unit manufacturing apparatus comprises: a dispenser including a first storage unit capable of arranging a resin supported by uniformly combining a phosphor; and a first temperature control unit connected to the dispenser. The first temperature control unit maintains the temperature of the resin inside the dispenser within a range of ±5°C of the predetermined temperature. Therefore, the characteristic variation of the manufactured wavelength conversion unit can be minimized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a wavelength converter and a method for manufacturing a wavelength converter using the same.

The present invention relates to an apparatus for manufacturing a wavelength converter and a method of manufacturing a wavelength converter using the same, and more particularly, to a wavelength converter manufacturing apparatus capable of preventing phosphor precipitation in a resin during manufacture of a wavelength converter, ≪ / RTI >

BACKGROUND ART Light emitting diodes (LEDs) are used in backlight sources, display devices, lighting devices, and the like of displays. Generally, a white light emitting diode implements white light by a combination of three primary colors of light. In the method of realizing a white color from a light emitting diode, a combination of a combination of a blue LED chip and a yellow phosphor and a combination of a UV LED chip and three phosphors of red, green and blue are common. Generally, the phosphor is mixed with an epoxy or a silicon carrier in powder form and applied to the LED chip.

Generally, in order to realize a white light emitting diode, a light emitting diode chip is packaged, and a wavelength converting part disposed in a path of light emitted from the light emitting diode chip is disposed. As the wavelength converting section, a phosphor is mainly used. For example, a method of carrying a phosphor on a resin sealing the light emitting diode chip may be used, or a method of arranging a phosphor sheet or the like on the light emitting path of the light emitting diode chip . Among them, the most commonly used method is to apply a light emitting diode chip with a resin containing a phosphor in a light emitting diode packaging process. At this time, the resin is applied on the light emitting diode chip using a dispenser such as a syringe.

However, according to the conventional method of applying the phosphor resin, phosphors in the syringe are precipitated in the concealed body (resin) as time passes, which may cause light emitting deviations of the manufactured light emitting diode packages. That is, as the process time passes, the phosphors may settle down to the bottom of the resin, and thus, there may be a case where more phosphor is contained in the LED package prepared in a later fashion than the LED package prepared in advance. Accordingly, the light emitting deviations between the light emitting diode packages manufactured in the same process become very large, which adversely affects the reliability of the product and the process yield.

In addition, as the phosphor resin application process time becomes longer, curing of the resin in the syringe may occur. When the resin is cured, the viscosity of the resin varies, and the characteristics of the phosphor resin depend on the time when the light emitting diode package is manufactured. Such a change in viscosity of the resin can be caused by a change in temperature, and it is extremely difficult to anticipate it, so that it is difficult to predict the characteristics of the phosphor resin of the manufactured light emitting diode package. Therefore, it is difficult to uniformly maintain the light emitting characteristics of the manufactured light emitting diode package.

In addition, mass production of a light emitting diode package is demanded, but resin capacity for mass production can not be accommodated only by the capacity of the dispenser. Therefore, a separate storage unit is required. However, since the deposition of the phosphors is continuously occurring even in such a storage unit, there is a problem that the deviation among the light emission characteristics of the manufactured light emitting diode package increases.

Accordingly, there is a need for an apparatus and a method that can maintain the light emitting characteristics of the light emitting diode package substantially uniformly regardless of the point of time of the phosphor resin coating process, and can manufacture a wavelength conversion unit applicable to a mass production of a light emitting diode package.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for manufacturing a wavelength conversion section capable of uniformly maintaining light emission characteristics of a plurality of light emitting devices to be manufactured.

Another object of the present invention is to provide a wavelength conversion unit manufacturing apparatus capable of uniformly maintaining the light emission characteristics of a plurality of light emitting devices manufactured in large quantities.

A further object of the present invention is to provide a method for manufacturing a wavelength converter that can minimize a light emission deviation between light emitting devices manufactured using the wavelength converter manufacturing apparatus.

An apparatus for manufacturing a wavelength converter according to an embodiment of the present invention is an apparatus for manufacturing a wavelength converter of a light emitting device, comprising: a dispenser including a first storage unit in which a phosphor is uniformly mixed and a supported resin is disposed; And a first temperature controller connected to the dispenser, wherein the first temperature controller may include a temperature sensor.

Wherein the first temperature controller includes a water cooler, the water cooler at least partially surrounds the dispenser, and a circulation pipe through which water flows; And a temperature controller connected to the circulation pipe to maintain a constant temperature of the water.

The first temperature controller may include a thermoelectric element; A body portion in which the thermoelectric element is disposed;

An air circulating unit for surrounding the dispenser; A first air passage for introducing air into the main body; A second air passage through which air flows from the main body to the air circulation unit; And a third air passage for discharging air from the air circulation unit to the outside.

The main body may further include an air circulation path for circulating air in the main body and an air pump, and air in the air circulation path may be adjusted to have a constant temperature by the thermoelectric element.

The first temperature controller may further include a thermoelectric element and a clamp for contacting the dispenser.

The temperature sensor may contact the dispenser or the clamp.

Wherein the first temperature regulator includes an air compression refrigerator, wherein the air compression refrigerator includes: a compressor for compressing and heating a refrigerant gas; A cooler for cooling the refrigerant gas discharged from the compressor into a liquefied refrigerant; An expansion valve for cooling the liquefied refrigerant discharged from the cooler to convert a part of the liquefied refrigerant into a refrigerant gas; And a circulation pipe at least partially surrounding the dispenser, wherein the refrigerant gas discharged from the expansion valve moves.

The first temperature controller may maintain the temperature of the resin in the dispenser at a temperature within a range of +/- 5 DEG C of the predetermined temperature.

The predetermined temperature may be a temperature within a range of -5 ° C to 30 ° C.

The apparatus for manufacturing a wavelength converter may further include a first stirrer for uniformly mixing the phosphor with the phosphor.

The wavelength converting part manufacturing apparatus may further include a first temperature maintaining unit for maintaining the temperature of the resin supplied from the first stirrer.

Wherein the first temperature maintaining unit comprises: a second storage unit for storing the resin; And a second temperature regulating unit surrounding the second storing unit, and the second temperature regulating unit may maintain the temperature of the resin in the second storing unit at -5 to 30 캜.

The wavelength converting portion manufacturing apparatus may further include a second temperature maintaining unit that stores the resin supplied from the first temperature maintaining unit and maintains the temperature of the resin.

The second temperature maintaining unit includes at least one third storage unit for storing the resin; And a third temperature regulator connected to the third reservoir, and the third temperature regulator can maintain the temperature of the resin in the third reservoir at -5 to 30 ° C.

According to another aspect of the present invention, there is provided a method of manufacturing a wavelength converter, comprising: preparing a dispenser in which phosphors are uniformly mixed and filled with a resin; Applying the resin from the dispenser to the light emitting device, maintaining the resin temperature inside the dispenser through a heat exchange medium, and sensing the temperature of the heat exchange medium by a temperature sensor.

The resin temperature inside the dispenser may be maintained at a temperature within a range of +/- 5 DEG C of the predetermined temperature by the first temperature controller connected to the dispenser.

In the process of applying the resin to the light emitting device, the predetermined temperature may be a temperature within a range of -5 ° C to 30 ° C.

The phosphor in which the phosphor is uniformly mixed and supported can be formed by mixing and stirring the phosphor and the resin through a first stirrer.

The method further comprises maintaining the temperature of the resin supplied from the first stirrer through the first temperature maintaining unit, wherein the first temperature maintaining unit includes a second storage unit for storing the resin, Wherein the temperature of the resin supplied from the first stirrer through the first temperature controller is controlled by the second temperature controller through the second temperature controller, RTI ID = 0.0 > 30 C < / RTI >

The method further comprises storing the resin supplied from the first temperature controller through the second temperature controller and maintaining the temperature of the resin, and the second temperature controller is configured to store the resin And a second temperature regulator connected to the third reservoir and the third reservoir, wherein the resin supplied from the first temperature controller through the second temperature controller is maintained, and the temperature of the resin is maintained And maintaining the temperature of the resin in the third storage part at -5 to 30 캜 through the third temperature regulating part.

According to the present invention, there is provided a device and a method for manufacturing a wavelength conversion part capable of maintaining the temperature of a resin at a constant level in the manufacture of a wavelength conversion part, thereby minimizing the occurrence of deviation in luminescence characteristics of a plurality of light emitting devices to be manufactured have. Thus, the yield of the light emitting device manufacturing process can be improved. In addition, it is possible to mass-produce a plurality of light emitting devices through a large-capacity temperature maintaining device, and to minimize variations in the light emitting characteristics of a plurality of mass-produced light emitting devices.

1 is a schematic view for explaining an apparatus for manufacturing a wavelength converter according to an embodiment of the present invention.
2A is a perspective view for explaining an example of a wavelength converter converting apparatus according to an embodiment of the present invention.
2B is a perspective view illustrating another example of the apparatus for fabricating a wavelength converter according to an embodiment of the present invention.
3 is a perspective view for explaining another example of the apparatus for fabricating a wavelength converter according to an embodiment of the present invention.
4 is a perspective view for explaining another example of the apparatus for fabricating a wavelength converter according to an embodiment of the present invention.
FIG. 5 is a photograph for explaining a comparison between the degree of precipitation of a phosphor according to another embodiment of the present invention and a conventional technique.
6 is a block diagram illustrating a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention and a method for manufacturing a wavelength converter.
FIG. 7 is a block diagram illustrating a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention and a method for manufacturing a wavelength converter.
8 is a cross-sectional view for explaining a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention.
9 is a block diagram illustrating a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention and a method for manufacturing a wavelength converter.
10 is a block diagram illustrating a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention and a method for manufacturing a wavelength converter.
11 is a cross-sectional view for explaining a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention.
12 is a schematic view for explaining a method of manufacturing a wavelength converter according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of example so that those skilled in the art can sufficiently convey the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the width, length, thickness, etc. of components may be exaggerated for convenience. It is also to be understood that when an element is referred to as being "above" or "above" another element, But also includes the case where there are other components in between. Like reference numerals designate like elements throughout the specification.

In the embodiments described later, the apparatus for manufacturing a wavelength converter of the present invention will be described with respect to an apparatus for manufacturing a wavelength converter applied to a light emitting device. The light emitting device may include, for example, a light emitting diode package or module including a light emitting diode. However, the present invention is not limited to this, and the wavelength conversion unit manufacturing apparatus may be applied to the case of manufacturing a wavelength conversion unit applied to various kinds of other light emitting devices.

FIG. 1 is a schematic view for explaining an apparatus for manufacturing a wavelength converter according to an embodiment of the present invention. FIG. 2 (a) is a perspective view for explaining an example of a wavelength converter producing apparatus according to an embodiment of the present invention, 3 is a perspective view illustrating another example of the apparatus for fabricating a wavelength converter according to another embodiment of the present invention. . 4 is a perspective view for explaining another example of the apparatus for fabricating a wavelength converter according to another embodiment of the present invention.

Referring to FIG. 1, the wavelength converter manufacturing apparatus includes a dispenser 100 and a first temperature controller 200.

The dispenser 100 includes a first storage part 110 in which a material such as a resin including a fluorescent material is disposed, and a supply part 111 in which the material is supplied in a different configuration .

In the first storage part 110 of the dispenser 100, the phosphor may be uniformly mixed with the loaded resin. The phosphor and the resin may be prepared by mixing and compounding each other. The supply part 111 may serve as a path through which the resin is supplied to the light emitting device to which the resin is discharged and applied.

The dispenser 100 may be various types of dispensers known to those of ordinary skill in the art and may be, for example, a dispenser in the form of a syringe including a first reservoir 110 and a supply unit 111.

On the other hand, the resin may include a resin such as an epoxy resin, an acrylic resin, or a silicone resin as a main agent, and may serve as a matrix for dispersing the phosphor. Further, the resin may further include a curing agent, so that the resin bearing the phosphor can be supplied to the light emitting device and then cured.

The first temperature regulating unit 200 may be connected to the dispenser 100 and may adjust the temperature of the dispenser 100. Particularly, the first temperature controller 200 can control the temperature inside the first storage unit 110 of the dispenser 100. The first temperature regulator 200 can maintain the temperature inside the dispenser 100 at a predetermined temperature range and can keep the temperature inside the dispenser 100 at a predetermined temperature within the range of 占 5 占 폚, It may also be maintained at a predetermined temperature within a range of 占 3 占 폚. Further, the first temperature regulator 200 may maintain the temperature inside the dispenser 100 almost constant.

In addition, the first temperature controller 200 may adjust the temperature of the inside of the dispenser 100 to a temperature within the range of -5 ° C to 30 ° C. Specifically, the first temperature regulator 200 can regulate the temperature inside the dispenser 100 to a temperature within the range of -5 ° C to 25 ° C. More specifically, the temperature within the range of -5 ° C to 20 ° C Can be adjusted. If the temperature inside the dispenser 100 is set at a temperature outside the above range, the viscosity change rate with time may be too high or the curing reaction may occur too slowly. However, the present invention is not limited thereto.

Hereinafter, the curing mechanism of the resin including the subject and the curing agent will be described in detail, and the effect of the apparatus for manufacturing a wavelength converter according to the present invention will be described.

The curing of the resin occurs when the curing agent acts as a cross linker to cure the resin, and the resin may further include a curing retarder to control the curing time and the like. The curing of the resin is a mechanism in which the curing is carried out while changing the viscosity by heat, and thus the degree of curing can be controlled according to the temperature of the resin. That is, the curing time and the viscosity change rate of the resin can be greatly changed according to the process temperature. In addition, in the process of mixing the resin and mixing with the phosphor, the temperature of the resin may be different depending on the mixing method and time. If the temperatures of the prepared mixed resins are different, the curing time and rate of change of viscosity of the resin may also vary greatly.

Therefore, in the conventional case, it is difficult to accurately predict the curing time and the rate of change of viscosity of the resin, and the characteristics of the wavelength converting portion manufactured at the time of manufacturing and the like were different. This is because the luminescence characteristics of the manufactured luminescence device are not constant, and thus, the characteristics of the luminescence devices manufactured in the same process are varied.

However, in the case of using the apparatus for manufacturing a wavelength conversion part of the present invention, the temperature inside the dispenser 100 can be adjusted and kept constant by the first temperature controller 200. When the temperature inside the dispenser 100 is kept constant, it is possible to prevent the rate of change in viscosity from varying according to the manufacturing process of the wavelength converting portion, and the resin curing time can also be kept substantially constant. Accordingly, it is possible to minimize the occurrence of a deviation in light emission characteristics between the light emitting devices manufactured in the same process, thereby improving the process yield.

In addition, the viscosity of the resin can be minimized by adjusting the temperature inside the dispenser 100 to a substantially constant temperature within the range of -5 to 30 ° C. Thus, it is possible to prevent the phosphor from precipitating in the lower portion of the resin. During the manufacturing process of the wavelength conversion part, the phosphors are prevented from precipitating in the lower part of the resin in the first storage part 110, so that the light emitting devices using the wavelength conversion part manufactured using the wavelength conversion part manufacturing device So that the process yield can be improved.

The first temperature regulator 200 may be applied to various methods known to those skilled in the art. The first temperature controller 200 may be driven according to various temperature control methods. The dispenser 100 may be in contact with a heat exchange medium according to each temperature control method. At this time, the temperature of the heat exchange medium can be measured by the temperature sensor, and the temperature can be adjusted from time to time according to the temperature of the heat exchange medium measured by the temperature sensor. The heat exchange medium may be a refrigerant such as air, water, or the like, and may have a structure such as a clamp. However, the present invention is not limited thereto, and it is possible to use a configuration capable of exchanging heat with the dispenser 100. Hereinafter, the configuration of the first temperature regulator 200 according to each of the temperature regulating methods will be described.

For example, the first temperature regulating unit 200 may include a thermoelectric element, and a wavelength conversion unit manufacturing apparatus including a thermoelectric element will be described in detail with reference to FIG. 2A. FIG. 2A shows an example of a first temperature controller 200 including a thermoelectric element and a dispenser 100. FIG.

Referring to FIG. 2A, the apparatus for fabricating a wavelength converter of FIG. 2A may include a dispenser 100 and a first temperature controller 200 including a thermoelectric element 210. The first temperature regulator 200 may further include a heat sink 220, a cooler 230, and a temperature sensor 240. The apparatus for fabricating a wavelength converter may further include a body 260.

The dispenser 100 may be in the form of a syringe, as shown. The dispenser 100 may include a first storage unit 110 and a supply unit 111, and the dispenser 100 is substantially similar to that described above, and therefore, detailed description thereof will be omitted. Further, the dispenser 100 can be fixed in various ways and fixed, for example, as shown, by a clamp.

The thermoelectric element 210 may include an element that induces absorption or generation of heat. The thermoelectric element 210 is connected to the dispenser 100 to adjust the temperature of the dispenser 100 and further connected to the clamp for fixing the dispenser 100 and connected to the dispenser 100 and the thermoelectric element 210 through a clamp, Heat exchange can be performed.

The first temperature regulating unit 200 may further include a heat sink 220 and a cooler 230 connected to the thermoelectric elements 210. The heat sink 220 and the cooler 230 may function to more effectively dissipate heat generated from the thermoelectric element 210. The material of the heat sink 220 is not limited, and may include, for example, a metal having an excellent thermal conductivity.

The body part 260 may be interposed between the dispenser 100 and the thermoelectric element 210 and the body part 260 may fix the dispenser 100 and the thermoelectric element 210. However, the body portion 260 may be omitted.

Further, the first temperature regulator 200 may further include a temperature sensor 240. [ The temperature sensor 240 may assist in controlling the temperature of the dispenser 100, particularly the temperature inside the dispenser 100, to regulate the absorption and generation of heat of the thermoelectric element 210. At this time, a control unit (not shown) for controlling the operation of the thermoelectric element by acquiring data from the temperature sensor 240 may be further disposed.

The temperature sensor 240 may be placed in contact with the dispenser 100, or may be arranged to contact a clamp that secures the dispenser 100 as shown. Or the temperature sensor 240 may be in contact with the thermoelectric element 210. However, the present invention is not limited thereto.

However, the present invention is not limited to the embodiment of FIG. 2A, and the apparatus for fabricating a wavelength converter of the present invention may include a temperature controller of a different method from the embodiment of FIG. For example, the first temperature regulator 200 may include a temperature regulator of a cooler type as shown in FIG. 2B, or may include a cooler as shown in FIG.

The embodiment of FIG. 2B differs from the embodiment of FIG. 2A in the manner of regulating the temperature of the dispenser 100. Hereinafter, differences will be mainly described, and detailed description of the same configuration will be omitted.

Referring to FIG. 2B, the wavelength converter manufacturing apparatus may include a first temperature controller 200a including a dispenser 100 and a thermoelectric transducer 210. FIG. The first temperature regulating unit 200a may include a body unit 270, a thermoelectric element 210, first to third air passages 271, 273 and 277, and an air circulating unit 275. Furthermore, the first temperature regulator 200a may further include a temperature sensor.

The first air passage 271 and the second air passage 273 may be connected to the body portion 270. The first air passage 271 may be a passage through which external air is introduced, 271 may be a passage for discharging air from the main body 270 to the outside. At this time, the second air passage 273 may be connected to the air circulation unit 275, and the third air passage 277 may be connected to the air circulation unit 275. In the air circulation part 275, the second air passage 273 may be a passage through which air is introduced, and the third air passage 277 may be a passage through which air is discharged to the outside.

Hereinafter, the operation principle of the first temperature regulating unit 200a will be described.

The outside air can be drawn into the body portion 270 through the first air passage 271 and the drawn air can circulate inside the body portion 270. At this time, the circulating air in the main body 270 is regulated to maintain a constant temperature by the thermoelectric element 210. The body portion 270 may include a device capable of drawing air through the first air passage 271 and circulating air therein, and may include, for example, an air pump. In addition, the main body 270 may further include an air circulation path that can control the temperature of the circulating air therein, and the air circulation path may be connected to the thermoelectric element 210. The main body 270 may further include various heat dissipating devices for effectively dissipating heat from the drawn air. For example, the main body 270 may further include a radiating fin, a radiating pad, a radiating fan, and the like.

The air circulated in the main body 270 and having a constant temperature is moved to the air circulation unit 275 through the second air passage 273. At this time, the air can be moved to the second air passage 273 through the air pump or the like in the body portion 270. The temperature-adjusted air circulates through the second air passage 273 in the air circulation section 275 so that the temperature in the first storage section 110 is substantially equal to the temperature in the air circulation section 275 Can be kept the same. The air circulating in the air circulation section 275 can be discharged to the outside through the third air passage 277 and therefore the air having the constantly constant temperature is discharged through the second air passage 273 to the air circulation section 275 Lt; / RTI > Therefore, even if the temperature of the air in the air circulation unit 275 increases due to the heat exchange between the air in the first storage unit 110 and the air circulation unit 275, the air whose temperature has risen reaches the third air passage 277 And the air having a constant temperature can be continuously supplied through the second air passage 273. In addition, the first temperature regulator 200a may further include a temperature sensor (not shown). The temperature sensor may assist in controlling the absorption and generation of heat of the thermoelectric element 210 by measuring the temperature inside the dispenser 100. Alternatively, it is also possible to measure the temperature of the circulating air and to assist in controlling the temperature of the air so that the temperature of the circulating air is kept within a certain range.

3 is a perspective view for explaining another example of the apparatus for fabricating a wavelength converter according to an embodiment of the present invention.

3, the apparatus for fabricating a wavelength converter of FIG. 3 may include a dispenser 100, and a first temperature controller 200b including a circulation pipe 280 and a temperature controller 281. FIG.

A liquid can circulate inside the circulation pipe 280, for example, water can circulate. The water may be pumped by the temperature regulator 281 to circulate continuously through the circulation pipe 280. At this time, the temperature controller 281 may include a coolant or the like to maintain the temperature of the circulating water to be substantially constant.

A portion of the circulation tube 280 may at least partially wrap the dispenser 100. The circulation pipe 280 can wrap the dispenser 100 spirally so that the temperature inside the dispenser 100 can be kept substantially equal to the temperature of the water inside the circulation pipe 280. [ Therefore, if the temperature of the water in the circulation pipe 280 is kept constant by the temperature regulating device 281, the temperature of the dispenser 100 can also be kept constant. In addition, the first temperature regulator 200b may further include a temperature sensor (not shown). The temperature sensor may serve to assist in controlling the temperature of the resin by measuring the temperature inside the dispenser 100. Alternatively, it is also possible to measure the temperature of the circulating water and to assist in controlling the temperature of the water so that the temperature of the circulating water is kept within a certain range.

However, the first temperature regulating unit 200b of the present invention is not limited by the description of FIG.

4 is a perspective view for explaining another example of an arrangement of a wavelength converter converting apparatus according to an embodiment of the present invention.

4 includes a dispenser 100 and a temperature control device 290 including a compressor 291, a cooler 292 and an expansion valve 293, and a circulation pipe 294 And a first temperature controller 200c including the first temperature controller 200c.

The compressor 291 compresses the refrigerant gas to heat the refrigerant gas. The refrigerant gas discharged from the compressor 291 is injected into the cooler 292. The cooler 292 cools the refrigerant gas into a liquefied state. In this case, the cooling method may be heat exchange with the outside, and a separate coolant may be used, but is not limited thereto. The refrigerant in the liquefied state discharged from the cooler 292 is once again cooled while passing through the expansion valve 293, and at the same time, partially vaporized. The refrigerant discharged from the expansion valve 293 may be injected into the circulation pipe 294. The description of the circulation pipe 294 is similar to that described with reference to Fig. Accordingly, the temperature inside the dispenser 100 can be kept substantially equal to the refrigerant temperature inside the circulation pipe 294. The refrigerant whose temperature has risen due to heat from the dispenser 100 flows into the first temperature regulating unit 200c and can be used again for adjusting the internal temperature of the dispenser 100 through the same process. In addition, the first temperature regulating unit 200c may further include a temperature sensor (not shown). The temperature sensor may serve to assist in controlling the temperature of the resin by measuring the temperature inside the dispenser 100. Alternatively, the temperature of the circulating refrigerant can be measured and the temperature of the refrigerant can be controlled so that the temperature of the continuously circulating refrigerant is maintained within a certain range.

4 is a schematic view for explaining a method of manufacturing a wavelength converter according to another embodiment of the present invention. The method for manufacturing the wavelength converting portion of FIG. 4 may be performed using the apparatus for fabricating a wavelength converting portion described with reference to FIGS. Therefore, detailed description of the same configuration as that described in the embodiment of Figs. 1 to 3 will be omitted.

(Experimental Example)

Experiments were carried out to determine the viscosity change of the resin and the degree of precipitation of the phosphor depending on the temperature of the resin. The experiment was carried out by maintaining the silicone resin containing the phosphor at each temperature and measuring the viscosity by comparing it to the room temperature, and the results of these experiments are shown in Table 1. The holding time was 2 hours.

division Viscosity change rate from initial to 2 hours later Leave at room temperature 38% Maintain 10 ℃ -One% Maintain at 20 ℃ -One% Maintained at 28 ℃ 17% Maintained at 34 ℃ 23%

As shown in the results of Table 1, the viscosity change was most remarkable at 38% when left at room temperature, and the viscosity change rate was lower than that when temperature was maintained. In particular, it can be seen that when the temperature of the resin is maintained at 10 캜 or 20 캜, the viscosity hardly changes.

According to these experiments, the degree of precipitation of the phosphor is shown in the photograph of FIG.

Fig. 5 (a) shows the resin left at room temperature, and Fig. 5 (b) shows the case where the temperature is maintained. As shown in the photograph, precipitation of the phosphor occurred when the resin was left at room temperature, but it was found that the precipitation of the phosphor hardly occurred when the temperature was maintained.

FIG. 6 is a block diagram showing a configuration of an apparatus for manufacturing a wavelength converter according to still another embodiment of the present invention and a method for manufacturing a wavelength converter.

Referring to FIG. 6, the apparatus for fabricating a wavelength converter according to the present embodiment is similar to the apparatus for fabricating a wavelength converter described with reference to FIGS. 1 to 4, but differs therefrom in that it further includes a first stirrer 300.

The first stirrer 300 mixes the resin and the phosphor, and stirs the mixed resin and the phosphor to form a material. The resin may include a resin such as an epoxy resin or an acrylic resin, or a silicone resin as a main agent, and may serve as a matrix for dispersing the phosphor. Further, the resin may further include a curing agent, so that the resin bearing the phosphor can be supplied to the light emitting device and then cured.

The first stirrer 300 may include a rotating shaft having paddles having a screw shape capable of stirring the resin and the fluorescent material, but the present invention is not limited thereto, and it is possible to use a form capable of uniformly dispersing the fluorescent material in the resin.

The weight of the fluorescent material in the resin stirred in the first stirrer 300 may have a weight within a range of 占 0.01 g at a predetermined weight. Accordingly, the light emitting devices to be manufactured can have the same light emitting property, for example, the same color coordinates.

The resin agitated in the first agitator 300 may be stored in the first reservoir 110 of the dispenser 100 and the temperature of the resin may be regulated by the first temperature regulator 200. The description thereof is the same as that described with reference to Figs. 1 to 4.

FIG. 7 is a block diagram showing a configuration of an apparatus for manufacturing a wavelength converter according to still another embodiment of the present invention and a method for manufacturing a wavelength converter.

Referring to FIG. 7, the apparatus for fabricating a wavelength converter according to the present embodiment is similar to the apparatus for fabricating a wavelength converter described with reference to FIG. 6, but differs in that it further includes a first temperature maintainer 400.

The first temperature maintainer 400 serves to maintain the temperature of the resin supplied from the first stirrer 300. Thereafter, the resin in the first temperature maintaining device 400 is supplied to the dispenser 100. The first temperature maintaining unit 400 may include a second storage unit 410 and a second temperature control unit 420.

The second storage unit 410 may store the resin supplied from the first stirrer 300. Since the first stirrer 300 generates heat by a stirring device such as a paddle, it is necessary to move the resin to a separate storage space separate from the first stirrer 300, and the second storage unit 410 performs this role can do.

The second temperature regulator 420 may surround the second storage unit 410. Further, the second temperature regulator 420 may be connected to the second storage unit 410. For example, as shown in FIG. 8, the second temperature regulator 420 may surround a part of the second storage unit 410. However, the present invention is not limited thereto, and the second temperature regulator 420 may be configured to surround the second storage unit 410 as a whole.

The second temperature regulator 420 can maintain the temperature of the resin. Specifically, the second temperature regulator 420 may maintain the temperature of the resin in the second storage part 410 at -5 ° C to 30 ° C. Thus, it is possible to prevent the viscosity change rate of the resin from appearing differently, and the resin curing time can also be kept substantially constant. Accordingly, it is possible to minimize the occurrence of a deviation in light emission characteristics between the light emitting devices manufactured in the same process, thereby improving the process yield.

Further, the temperature of the resin in the first stirrer 300 rises during the stirring process. When the temperature-increased resin is continuously injected into the dispenser 100 continuously, the resin is applied to the light-emitting device before the temperature of the resin is maintained at a predetermined temperature by the first temperature regulator 200 You can throw away. Since the temperature of the resin before the first temperature maintaining device 400 is injected into the dispenser 100 is maintained in advance in this embodiment, the temperature of the resin to be coated is more uniform, Can be prevented.

Various methods known to those skilled in the art can be applied to the second temperature regulator 420. For example, the second temperature regulator 420 may include a thermoelectric element (not shown). Furthermore, the second temperature regulator 420 may further include a temperature sensor (not shown). The temperature sensor may assist in controlling the temperature of the second storage part 410, particularly the temperature inside the second storage part 410, to adjust the absorption and generation of heat of the thermoelectric element. At this time, a control unit (not shown) for controlling the operation of the thermoelectric element by acquiring data from the temperature sensor may be further disposed.

9 is a block diagram illustrating a configuration of an apparatus for manufacturing a wavelength converter according to another embodiment of the present invention and a method for manufacturing a wavelength converter.

Referring to FIG. 9, the apparatus for fabricating a wavelength converter according to the present embodiment is similar to the apparatus for fabricating a wavelength converter described with reference to FIG. 7, but differs therefrom in that it further includes a second temperature maintainer 500.

The second temperature maintaining unit 500 stores the resin supplied from the first temperature maintaining unit 400 and maintains the temperature of the resin. Thereafter, the resin in the second temperature holder 500 is supplied to the dispenser 100. [ Furthermore, the second temperature holder 500 can accommodate more resin than the resin that the second storage portion 410 of the first temperature holder 400 can accommodate for mass production of the light emitting device.

The second temperature controller 500 may include at least one third storage unit 510 and a third temperature controller 520.

The third storage unit 510 may store the resin supplied from the first temperature maintaining unit 400. The third storage unit 510 may have a cylindrical shape with an empty interior, but is not limited thereto. The capacity of the third storage unit 510 may be greater than the capacity of the second storage unit 410. For example, the internal capacity of the third storage unit 510 may be 500 g. When the capacity is satisfied, mass production of the light emitting device can be sufficiently performed by only the resin stored in the third storage part 510 once.

The third storage part 510 may include a separate device capable of stirring the resin in the third storage part 510. For example, the third storage unit 510 may be designed to rotate about a vertical axis in the vertical direction. This prevents precipitation of the phosphor in the resin, so that the deviation of the phosphor distribution in the resin can be minimized.

The third temperature regulator 520 may be connected to the third storage unit 510. The third temperature regulating unit 520 may surround the third storage unit 510. However, the present invention is not limited thereto, and the third temperature regulating unit 520 may be configured to surround the third storage unit 510 as a whole.

The third temperature regulator 520 can maintain the temperature of the resin. Specifically, the third temperature regulator 520 may maintain the temperature of the resin in the third storage portion 510 at -5 ° C to 30 ° C. Thus, the rate of change of the viscosity of the resin is maintained, and the deviation of the light emission characteristics of the produced light emitting devices can be minimized. In addition, the third temperature regulator 520 can maintain the temperature of the resin for a long time. For example, the third temperature regulator 520 can maintain the temperature of the resin to 36 hours or less. The light emitting device can be supplied to the wavelength converter manufacturing process for a specific time, for example, for a maximum of 36 hours. Therefore, in the above configuration, since the temperature of the resin can be maintained in accordance with the time when the light emitting device is supplied, the rate of change of the viscosity of the resin is maintained, and the deviation of the light emitting characteristics of the manufactured light emitting devices can be minimized.

The third temperature regulator 520 may adjust a temperature deviation of the plurality of third storage units 510. [ Specifically, the third temperature regulating unit 520 is connected to the plurality of third storing units 510 to measure and compare the temperatures of the respective third storing units 510 to obtain a predetermined deviation value or less. The temperature inside each of the third storage units 510 can be controlled independently. However, the present invention is not limited thereto, and the third temperature regulator 520 can collectively regulate the temperature inside the third storage units 510.

The third temperature regulator 520 may be applied to various methods known to those skilled in the art. For example, the third temperature regulator 520 may include a thermoelectric element (not shown). Furthermore, the third temperature regulator 520 may further include a temperature sensor (not shown). The temperature sensor may assist in controlling the temperature of the third storage part 510, particularly the temperature inside the third storage part 510, to regulate the absorption and generation of heat of the thermoelectric element. At this time, a control unit (not shown) for controlling the operation of the thermoelectric element by acquiring data from the temperature sensor may be further disposed. Each of the third storage units 510 may be connected to the temperature sensor and the thermoelectric element one on one. Accordingly, the control unit of the third temperature regulator 520 can independently adjust the temperatures of the plurality of third storage units 510.

Alternatively, the control unit of the third temperature regulator 520 may control the temperatures inside the plurality of third storage units 510 in a batch manner without independently controlling the temperatures inside the plurality of third storage units 510 It can also be adjusted. In this case, the thermoelectric elements connected to each of the third storage units 510 may be integrated into one unit and controlled by the control unit. Also, a temperature sensor (not shown) may be arranged to measure the temperature of the integrated thermoelectric element. In this case, there is no need for the third storage unit 510 and the temperature sensor to be in contact with each other, and the problem of damaging the temperature sensor due to frequent opening and closing of the third storage unit 510 can be minimized.

10 is a block diagram showing a configuration of an apparatus for manufacturing a wavelength converter according to yet another embodiment of the present invention and a method for manufacturing a wavelength converter.

Referring to FIG. 10, the apparatus for fabricating a wavelength converter according to the present embodiment is similar to the apparatus for fabricating a wavelength converter described with reference to FIG. 9, except that it further includes a second stirrer 600.

The second stirrer 600 may store the resin supplied from the second temperature holder 120. [ Further, the second stirrer 600 may serve to disperse the phosphor precipitated in the resin again. Thereafter, the resin in the second stirrer 600 is supplied to the dispenser 100.

The second agitator 600 may be connected to the third storage unit 510 of the second temperature maintainer 500. When there are a plurality of third storage units 510, the resin of the plurality of third storage units 510 may be collected in the second stirrer 600 and the collected resin may be stored in the second stirrer 600. The second stirrer 600 may have a cylindrical shape, but is not limited thereto.

The second agitator 600 can be tilted at a predetermined slope and then returned to its original state. Such a single operation of the second agitator 600 can be seen in one cycle. The phase (phase) of the resin moves in the second stirrer 600 for one cycle, and the phosphor in the resin is also moved. Specifically, the phosphors are more distributed under the resin than the upper portion of the resin due to gravity, and the phosphors that have been concentrated in the lower portion of the resin while the second stirrer 600 is tilted for one cycle can be moved to other regions of the resin. This prevents precipitation of the phosphor in the resin, so that the deviation of the phosphor distribution in the resin can be minimized.

The second agitator 600 can be tilted 90 to 90 degrees from the vertical direction for one cycle and then returned to the vertical direction. Specifically, as shown in Fig. The second agitator 600 can be inclined at 90 to -90 degrees with respect to one axis crossing the center of the lower surface of the second agitator 600 and then return to the vertical direction. When the second stirrer 600 is inclined to less than 10 degrees, the resin in the second stirrer 600 does not sufficiently move, so that the dispersion of the phosphor in the resin can not be smoothly performed. Therefore, the variation in the luminescence characteristics of the manufactured light emitting devices can not be reduced. When the second agitator 600 is inclined at an angle of more than 90 degrees, bubbles are generated due to an excessive cycle speed and an excessive phase change of the resin, which causes a decrease in the reliability of the light emitting device.

12 is a schematic view for explaining a method of manufacturing a wavelength converter according to another embodiment of the present invention.

12, a method of manufacturing a wavelength conversion part includes preparing a dispenser 100 in which phosphors are uniformly mixed and loaded and filled with a resin 710, and the resin is injected from the dispenser 100 into the light emitting device 800, .

The phosphor-supported resin 710 may include an epoxy resin, a polymer resin such as an acrylic resin, or a silicone resin, and may further include a curing agent, a curing inhibitor, and a catalyst. The phosphor can excite incident light and convert it into light of a different wavelength. The phosphor may include various phosphors commonly known to those skilled in the art and may include at least one of a garnet fluorescent material, an aluminate fluorescent material, a sulfide fluorescent material, an oxynitride fluorescent material, a nitride fluorescent material, a fluoride fluorescent material, and a silicate fluorescent material can do. However, the present invention is not limited thereto.

The phosphor may be mixed in the resin 710 at a uniform concentration as a whole, and the resin 710 carrying the phosphor may be prepared by mixing the phosphor and the resin using an electric mixer or the like.

In the process of applying the resin 710 from the dispenser 100 to the light emitting device 800, the dispenser 100 can be maintained at a substantially constant temperature by the first temperature regulator 200. By controlling the temperature of the dispenser 100, the temperature of the resin 710 in the dispenser 100 can also be maintained at a substantially constant temperature. For example, the temperature of the resin 710 can be maintained at a predetermined temperature within a temperature range of 占 5 占 and can be maintained at a predetermined temperature within a temperature range of 占 占 占. Further, the temperature of the resin 710 may be maintained at a constant temperature. The predetermined temperature may be -5 ° C to 30 ° C, and more specifically, -5 ° C to 25 ° C. More specifically, the predetermined temperature may be -5 ° C to 20 ° C.

The temperature of the resin 710 in the dispenser 100 is kept substantially constant so that the rate of change in viscosity of the resin 710 can be kept constant so that the curing time of the resin can be made constant at a predictable level. Further, as the rate of change in viscosity is kept constant, the precipitation of the phosphor in the resin 710 can be delayed. Therefore, it is possible to prevent a deviation in the light emitting characteristics of the light emitting device 800 from occurring at the time of manufacturing the wavelength conversion portion.

Meanwhile, the light emitting device 800 may be a light emitting diode package as shown in the figure. The light emitting diode package may include a light emitting diode 810 and may also have a cavity 820 in which the light emitting diode 810 is disposed. The resin 710 supplied from the wavelength converting portion manufacturing apparatus can be placed on the light emitting path by covering the light emitting diode 810 by being filled in the cavity 820. [

However, the light emitting device 800 is an example, and the method of manufacturing the wavelength conversion portion of the present invention can be applied to the light emitting device 800 of various other types.

Referring to FIG. 6, in a method of manufacturing a wavelength converter according to another embodiment of the present invention, a phosphor and a resin are mixed and stirred through a first stirrer 300 to uniformly mix phosphors to form a supported resin . The phosphor-supported resin may be supplied to the dispenser 100 from the first stirrer 300. The weight of the fluorescent material in the resin stirred in the first stirrer 300 may have a weight within a range of 占 0.01 g at a predetermined weight. Accordingly, the light emitting devices to be manufactured can have the same light emitting property, for example, the same color coordinates.

Referring to FIG. 7, a method for fabricating a wavelength converter according to another embodiment of the present invention is similar to the method for fabricating a wavelength converter described with reference to FIG. 6, except that the wavelength converter is manufactured through a first temperature controller 400, 300 may further include maintaining the temperature of the resin supplied to the mold. The first temperature maintaining unit 400 may include a second storage unit 410 for storing the resin and a second temperature control unit 420 connected to the second storage unit 410. The temperature of the resin in the second storage part 410 can be maintained at -5 to 30 캜 through the second temperature regulator 420. Thus, it is possible to prevent the viscosity change rate of the resin from appearing differently, and the resin curing time can also be kept substantially constant. Accordingly, it is possible to minimize the occurrence of a deviation in light emission characteristics between the light emitting devices manufactured in the same process, thereby improving the process yield.

Referring to FIG. 9, the method for fabricating a wavelength converter according to another embodiment of the present invention is similar to the method for fabricating a wavelength converter described with reference to FIG. 7, except that the first temperature maintaining There is a difference in that it may further include storing the resin supplied to the unit 400 and maintaining the temperature of the resin. The second temperature maintaining unit 500 may include a third storing unit 510 storing the resin and a third temperature adjusting unit 520 connected to the third storing unit 510. The temperature of the resin in the third storage part 510 can be maintained at -5 to 30 캜 through the third temperature regulator 520. The resin in the third storage part 510 may be stirred through the second temperature holder 500. [ Thus, it is possible to prevent the viscosity change rate of the resin from appearing differently, and the resin curing time can also be kept substantially constant. Accordingly, it is possible to minimize the occurrence of a deviation in light emission characteristics between the light emitting devices manufactured in the same process, thereby improving the process yield.

Referring to FIG. 10, the method for manufacturing a wavelength converter according to another embodiment of the present invention is similar to the method for manufacturing a wavelength converter described with reference to FIG. 9, except that the second temperature controller 500). ≪ / RTI > The second agitator 600 may be inclined 90 to 90 degrees from the vertical direction and then return to the vertical direction. Through this, it is physically prevented that the phosphor in the resin is precipitated, and the deviation of the phosphor distribution in the resin can be minimized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Claims (20)

An apparatus for producing a wavelength converter of a light emitting device,
A dispenser including a first storage part in which phosphors are uniformly mixed to allow the loaded resin to be arranged; And
And a first temperature controller connected to the dispenser,
Wherein the first temperature controller includes a temperature sensor. The method according to claim 1,
Wherein the first temperature controller includes a water cooler,
The water-
A circulation pipe at least partially surrounding the dispenser and flowing water therein; And
And a temperature controller connected to the circulation pipe to maintain a constant temperature of the water. The method according to claim 1,
The first temperature controller may include:
Thermoelectric elements;
A body portion in which the thermoelectric element is disposed;
An air circulating unit for surrounding the dispenser;
A first air passage for introducing air into the main body;
A second air passage through which air flows from the main body to the air circulation unit; And
And a third air passage for discharging air from the air circulation unit to the outside. The method of claim 3,
Wherein the main body portion further includes an air circulation path for circulating air inside thereof and an air pump,
Wherein the air in the air circulation path is adjusted to have a constant temperature by the thermoelectric element. The method according to claim 1,
The first temperature controller may include:
Thermoelectric elements and
And a clamp for contacting the dispenser. The method of claim 5,
And the temperature sensor is in contact with the dispenser or the clamp. The method according to claim 1,
Wherein the first temperature regulator includes an air compression cooler,
The air-
A compressor for compressing and heating the refrigerant gas;
A cooler for cooling the refrigerant gas discharged from the compressor into a liquefied refrigerant;
An expansion valve for cooling the liquefied refrigerant discharged from the cooler to convert a part of the liquefied refrigerant into a refrigerant gas; And
And a circulation pipe at least partially surrounding the dispenser and having the refrigerant gas discharged from the expansion valve moved therein. The method according to claim 1,
Wherein the first temperature regulator maintains the temperature of the resin in the dispenser at a temperature within a range of +/- 5 DEG C of a predetermined temperature. The method of claim 8,
Wherein the predetermined temperature is a temperature within a range of -5 占 폚 to 30 占 폚. The method according to claim 1,
And a first stirrer for uniformly mixing the phosphor with the resin. The method of claim 10,
And a first temperature maintaining unit for maintaining the temperature of the resin supplied from the first stirrer. The method of claim 11,
The first temperature maintaining unit includes:
A second storage section for storing the resin; And
And a second temperature control unit surrounding the second storage unit,
Wherein the second temperature control unit maintains the temperature of the resin in the second storage unit at -5 to 30 ° C. The method of claim 11,
And a second temperature holder for storing the resin supplied from the first temperature holder and for maintaining the temperature of the resin. 14. The method of claim 13,
Wherein the second temperature maintaining unit comprises:
At least one third storage for storing the resin; And
And a third temperature regulator connected to the third storage unit,
And the third temperature regulator maintains the temperature of the resin in the third storage part at -5 to 30 캜. Preparing a dispenser in which phosphors are uniformly mixed and filled with a resin;
Applying the resin from the dispenser to the light emitting device,
Maintaining the temperature of the resin inside the dispenser through a heat exchange medium,
And the temperature of the heat exchange medium is sensed by a temperature sensor. 16. The method of claim 15,
Wherein the resin temperature inside the dispenser is maintained at a temperature within a range of +/- 5 DEG C of a predetermined temperature by a first temperature regulator connected to the dispenser. 18. The method of claim 16,
Wherein the predetermined temperature is a temperature within a range of -5 占 폚 to 30 占 폚 in a process of applying the resin to the light emitting device. 18. The method of claim 17,
Wherein the phosphor is uniformly mixed and supported on the support, the support being formed by mixing and stirring the phosphor with the resin through a first agitator. 19. The method of claim 18,
Further comprising maintaining the temperature of the resin supplied from the first stirrer through a first temperature maintainer,
Wherein the first temperature maintaining unit includes a second storing unit storing the resin and a second temperature adjusting unit connected to the second storing unit,
Maintaining the temperature of the resin supplied from the first stirrer through the first temperature maintainer may include maintaining the temperature of the resin in the second reservoir at -5 to 30 ° C through the second temperature adjuster Wherein the wavelength conversion portion is formed of a transparent material. The method of claim 19,
Further comprising storing the resin supplied from the first temperature controller through a second temperature maintainer and maintaining the temperature of the resin,
Wherein the second temperature maintaining unit includes a third storage unit for storing the resin and a second temperature control unit connected to the third storage unit,
Storing the resin supplied from the first temperature maintaining unit through the second temperature maintaining unit, and maintaining the temperature of the resin through the third temperature adjusting unit is -5 To 30 < 0 > C.

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