JP2012160593A - Filling device and filling device checking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling device and a filling device checking method capable of keeping uniform chromaticity by restraining variation of light emission intensity of a fluorescent substance contained in liquid resin.SOLUTION: A potting device is a filling device for filling a package part which is a container, on the bottom of which a light emitting element is arranged, with liquid resin containing a fluorescent substance excited by lights from the light emitting element and emitting lights as sealing resin. The potting device comprises a syringe 2 for storing the sealing resin, a light source part 10 for emitting lights on the fluorescent substance toward the syringe 2, a measuring part 11 for measuring intensity of the lights emitted from the fluorescent substance, and a control part 9 for determining abnormality when the light emission intensity measured by the measuring part 11 is beyond a predetermined range. The light source part 10 is constituted by an illumination device 10a for illumination, and a radiating fiber 10b for emitting lights. The measuring part 11 is constituted by a measuring fiber 11a for receiving and transmitting the lights from the fluorescent substance, and a light measuring instrument 11b for measuring the light emission strength and notifying the control part 9.

Description

  The present invention relates to a filling apparatus for filling a container with a liquid resin containing a phosphor and a method for inspecting the filling apparatus.

  As the light emitting device that emits white light, for example, if the light emitting element emits blue light, a phosphor that emits yellow light that is excited by blue light from the light emitting element and becomes a complementary color of blue is used. By including this phosphor in a liquid resin material and using it as a sealing resin, blue light and yellow light are mixed to produce white light. A sealing resin in which such a phosphor is contained in a liquid resin material is filled with a potting device into a container in which a light emitting element is mounted on the bottom. In the potting device, the sealing resin is stored in a syringe (cylinder), and the sealing resin is dropped and filled into the container in which the light emitting element is arranged through a nozzle by extrusion with air or mechanical extrusion. .

  The sealing resin containing the phosphor has different emission intensity depending on the phosphor content and concentration, so if the phosphor content or concentration changes while filling the container, the chromaticity of each phosphor Will vary.

  As a technique for suppressing such chromaticity variation, a phosphor layer forming apparatus described in Patent Document 1 is known. In the phosphor layer forming apparatus described in Patent Document 1, the paste is ejected as droplets on each light emitting element from the ejection unit, and the thickness of the phosphor layer covering the light emitting element is measured by the measurement unit. The re-discharge amount of the paste is controlled by the discharge amount control unit in accordance with the thickness of the phosphor layer.

Special table 2008-554112 gazette

  However, if the concentration of the phosphor contained in the sealing resin in the syringe is outside the predetermined range, an abnormal concentration of sealing resin is filled from the beginning. In addition, since the specific gravity of the granular phosphor is heavier than that of the liquid resin, in the state where the sealing resin is stored in the syringe, the phosphor settles in the resin, and the phosphor is initially sealed at a high concentration. The stop resin is dripped, and the concentration gradually decreases.

  Accordingly, since the sealing resin filled in such a state has different emission intensity even if the phosphor layer has the same thickness, the re-discharge amount is adjusted by the phosphor layer forming apparatus described in Patent Document 1. Thus, even if the quantitative discharge can be performed, the concentration of the phosphor cannot be managed, and thus the variation in emission intensity due to the phosphor cannot be suppressed.

  As described above, variation in emission intensity due to the phosphor cannot be suppressed only by quantitative discharge of the sealing resin, and thus uniform chromaticity is an important problem.

  Accordingly, an object of the present invention is to provide a filling apparatus and a filling apparatus inspection method capable of keeping chromaticity uniform by suppressing variation in emission intensity of a phosphor contained in a liquid resin.

  The present invention irradiates light for emitting phosphors from a light source part toward a light transmission path located between the time when sealing resin is stored and discharged, and the phosphor emits light. The intensity is measured by the measurement unit, and the control unit determines the abnormality based on the measured emission intensity of the phosphor.

  According to the present invention, since the actual light emission intensity by the phosphor can be measured, the concentration of the phosphor in the syringe is out of the predetermined range from the beginning or gradually deviates from the predetermined range while discharging. Even in such a case, it can be determined by the control unit to be abnormal. Therefore, the present invention can keep the chromaticity uniform by suppressing the variation in the emission intensity of the phosphors contained in the liquid resin.

The perspective view which shows the filling apparatus which concerns on Embodiment 1 of this invention. The figure for demonstrating the structure of the filling apparatus shown in FIG. Sectional view showing light-emitting device The flowchart for demonstrating operation | movement of the filling apparatus shown in FIG. The flowchart for demonstrating operation | movement of the filling apparatus shown in FIG. The figure shows the relationship between the concentration of phosphors contained in the sealing resin and the emission intensity, and shows the specified range, concentration adjustment range, and work suspension range The figure which shows the relationship between the density | concentration of the fluorescent substance contained in sealing resin, light emission intensity, and discharge amount The flowchart for demonstrating operation | movement of the filling apparatus which concerns on Embodiment 2 of this invention. The flowchart for demonstrating operation | movement of the filling apparatus which concerns on Embodiment 2 of this invention. The perspective view which shows the filling apparatus which concerns on Embodiment 3 of this invention. The figure for demonstrating the structure of the filling apparatus shown in FIG. The perspective view which shows the filling apparatus which concerns on Embodiment 5 of this invention. The figure which shows the filling apparatus which concerns on Embodiment 6 of this invention.

  The first invention of the present application is a filling in which a liquid resin containing a phosphor that emits light when excited by light from a light emitting element is used as a sealing resin to fill and seal the container in which the light emitting element is arranged at the bottom. In the apparatus, a light source unit that emits light by emitting light toward a light-transmitting path located between the time when the sealing resin is stored and discharged, and the intensity of light emitted by the phosphor A filling apparatus comprising: a measuring unit for measuring; and a control unit that determines that an abnormality occurs when the emission intensity of the phosphor measured by the measuring unit is out of a predetermined range.

  According to the first aspect of the present invention, the phosphor that emits light by irradiating the liquid resin in the light transmissive path located between the time when the sealing resin is stored and discharged is irradiated from the light source unit. By measuring the intensity with the measurement unit, the actual emission intensity of the phosphor can be measured, so that the concentration of the phosphor contained in the liquid resin is out of the predetermined range from the beginning, or is gradually increased while discharging. Even when it is out of the range, the control unit can determine that it is abnormal.

  A second invention of the present application is the filling device according to the first invention, wherein the light source unit and the measurement unit are arranged below the syringe in which the sealing resin is stored.

  In the second invention, since the sealing resin is discharged from the lower part of the syringe, if the light source part and the measuring part are arranged at the lower part of the syringe, the liquid resin in a state where the phosphor concentration is abnormal is obtained. Since discharge can be suppressed, the occurrence of defective products can be suppressed at an early stage.

  A third invention of the present application is the filling device according to the second invention, wherein the light source unit and the measurement unit are arranged at a lower portion of the syringe and at one or more other locations.

  According to the third invention, if the light source unit and the measurement unit are arranged at one or more other locations outside the lower portion of the syringe, two or more locations can be measured simultaneously. Since variation in concentration can be measured, measurement accuracy can be improved.

  A fourth invention of the present application is the filling device according to any one of the first to third inventions, further comprising a notification device that notifies the abnormality when the control unit determines that the abnormality is present.

  According to the fourth aspect of the invention, the notification device notifies the operator of abnormality in the phosphor concentration, and this notification can be used as an opportunity for the operator to deal with the abnormality.

  According to a fifth invention of the present application, in any one of the first to fourth inventions, a stirring device for stirring the phosphor in the syringe in which the sealing resin is stored is provided, and the control unit is measured by the measurement unit. The agitation device is operated based on the emission intensity of the phosphor.

  According to the fifth aspect, the control unit operates the stirring device based on the concentration of the phosphor, so that the concentration deviation due to the sedimentation of the phosphor can be eliminated.

  According to a sixth invention of the present application, in any one of the first to fifth inventions, the control unit adjusts the discharge amount in accordance with the emission intensity of the phosphor measured by the measurement unit. It is.

  According to the sixth invention, the control unit achieves uniform emission intensity by decreasing the discharge amount if the emission intensity of the phosphor measured by the measurement unit is high and increasing the discharge amount if the emission intensity is low. Can do. In addition, by changing the phosphor content in the liquid resin, the phosphor content can be measured from the measured emission intensity even when manufacturing multiple types of light-emitting devices with different emission colors. When it is desired to use a sealing resin with a high body content, the discharge amount can be increased, and when a sealing resin with a low phosphor content is desired, the discharge amount can be reduced.

  According to a seventh aspect of the present invention, there is provided a filling apparatus that fills and seals a container in which a light emitting element is disposed at the bottom, using a liquid resin containing a phosphor that emits light when excited by light from the light emitting element as a sealing resin. In the inspection method, the step of irradiating light from the light source part to emit the phosphor toward the syringe formed by the light transmissive container in which the sealing resin is stored, and the intensity of the light emitted by the phosphor A method for inspecting a filling apparatus, comprising: a step of measuring the measurement by a measurement unit; and a step of determining an abnormality by the control unit based on the emission intensity of the phosphor measured by the measurement unit.

  According to the seventh invention, the actual emission intensity can be measured by measuring the intensity of the light emitted from the phosphor contained in the liquid resin by being excited by the light from the light source part. Even when the concentration of the phosphor in the syringe deviates from the predetermined range or gradually deviates from the predetermined range while being discharged, the controller can determine that it is abnormal.

(Embodiment 1)
A filling apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings. In the first embodiment, a potting device that fills a sealing resin for sealing a light emitting element of a light emitting device by mechanical extrusion will be described as an example. This sealing resin contains a phosphor that emits light converted in wavelength by being excited by light from the light emitting element as a filler in a liquid resin material as a main material. As the liquid resin material, an epoxy resin, a silicone resin, or the like is used. As the phosphor, a silicate phosphor or a YAG phosphor is used.

  As shown in FIGS. 1 and 2, the potting device 1 includes an apparatus main body 20 including a syringe 2, a stirring unit 3, a driving unit 4, a connecting pipe 5, a motor unit 6, a plunger 7, and a pump unit 8, and a control unit. 9 (not shown in FIG. 1). The arrow of FIG. 2 shows the passage route of the liquid resin material.

  The syringe 2 is a light transmissive container that stores a liquid resin material. The syringe 2 is formed by a cylindrical barrel portion 21 having a proximal end connected to the apparatus main body 20 and a funnel-shaped distal end portion 22 provided at the lower end of the barrel portion 21. The distal end portion 22 includes a reduced diameter portion 221 with a gradually decreasing diameter, and a cylindrical supply port 222 having a base portion connected to the reduced diameter portion 221 and a tip portion connected to the connecting pipe 5. Yes. An air supply pipe 223 for sending out the stored liquid resin material is connected to the upper end of the syringe 2 from the outside.

  The stirring unit 3 includes a stirring blade formed by a triangular plate that protrudes outward from the axis of the rotating shaft that is rotated by the driving unit 4, and stirs the phosphor in the syringe 2 by rotating. . In the present embodiment, two sets of stirring blades are provided along the axis of the rotating shaft.

  The drive unit 4 is a motor that rotates the rotating shaft of the stirring unit 3 at a constant speed, and is stored in a rectangular parallelepiped housing 41 together with the upper end of the syringe 2. The starting and stopping of the drive unit 4 and the rotation speed can be adjusted by the control unit 9.

  The connecting pipe 5 is a substantially L-shaped pipe line having one end connected to the lower end of the syringe 2 and the other end connected to the pump part 8.

  The motor unit 6 moves up and down linearly to move the plunger 7 forward and backward with respect to the pump unit 8. In the motor unit 6, the amount of the sealing material drawn into the pump unit 8 and the discharge amount from the pump unit 8 are controlled by the control unit 9.

  The plunger 7 linearly advances and retreats along the axis by the motor unit 6 to draw the liquid resin into the pump unit 8 from the syringe 2 and pushes it out from the pump unit 8 to drop it.

  The pump unit 8 includes a cylindrical storage container housed in a rectangular parallelepiped housing, stores and drops the liquid resin material flowing in from the connecting pipe 5, thereby causing the light emitting device 100 on which the light emitting element is mounted with the liquid resin. Fill the container. A nozzle 81 is provided at the lower end of the pump unit 8. An opening for moving the plunger 7 back and forth is provided at the upper end of the pump unit 8.

  The control unit 9 functions as a control unit by controlling the pump unit 8 to adjust the withdrawal amount and advancement amount of the plunger 7 or adjusting the rotational speed of the drive unit 4. The control unit 9 also has a function of controlling the closing or opening of a switching valve (not shown) that allows the liquid resin material in the syringe 2 to flow into the pump unit 8 and prevents the inflow. In addition, the control unit 9 horizontally moves the apparatus main body 20 to ensure the wettability of the nozzle 81 and discharges a predetermined amount of sealing resin onto the sample discharge surface S.

  In addition, the potting device 1 includes a light source unit 10 that emits light toward the sealing resin in the syringe 2 and the sealing resin discharged onto the sample discharge surface S, and a measurement that measures the intensity of light emitted from the phosphor. A unit 11 and a notification unit 12 are provided.

  The light source unit 10 includes an illumination device 10a that emits light having a wavelength that excites the phosphor most efficiently, and an irradiation fiber 10b that transmits and emits light from the illumination device 10a.

  The measurement unit 11 includes a measurement fiber 11a that transmits light from a phosphor incident thereon, and an optical measurement device 11b that measures the intensity of light from the measurement fiber 11a and notifies the control unit 9 of the intensity. Yes.

  The irradiation fiber 10b and the measurement fiber 11a are arranged on the sample discharge surface S, which is disposed toward the lower part of the syringe 2 having optical transparency, among the paths until the sealing resin is stored and discharged. Two sets are provided with the one arranged toward the discharged sealing resin.

  The notification unit 12 has a function of notifying the operator by sound according to an instruction from the control unit 9 or by using light.

  Here, an example of the light emitting device in which the resin sealing portion is formed by the potting device 1 will be described with reference to FIG.

  As shown in FIG. 3, the light emitting device 100 includes a lead frame 101, a package portion 102 that is provided on the upper surface of the lead frame 101 to form a recess 102 x with the mounting surface of the lead frame 101 as a bottom surface, and the lead frame 101. And a resin sealing portion 104 that seals the light emitting element 103 by filling the recess 102x with a liquid resin material. In the light emitting device 100, a lead frame 101 and a package unit 102 constitute a container.

  The lead frame 101 is provided with an anode frame 101b and a cathode frame 101c. The anode frame 101b and the cathode frame 101c are electrically connected to the light emitting element 103 by wires 105, respectively.

  The package part 102 has an anode terminal 102a and a cathode terminal 102b which are external terminals connected to the anode frame 101b and the cathode frame 101c on both side surfaces.

  The light-emitting element 103 is formed by stacking a semiconductor layer including a light-emitting layer over a conductive substrate formed using a semiconductor or an insulating substrate formed using sapphire or the like. In Embodiment Mode 1, a light-emitting element that emits blue light can be obtained.

  The resin sealing portion 104 is formed by curing a silicone resin 104b that is a liquid resin material containing a phosphor 104a that is a granular material. In the first embodiment, the phosphor 104a emits blue light from the light emitting element 103. Therefore, if the phosphor 104a emits yellow, which is a complementary color of blue, the blue and yellow are mixed and turned white. Can emit light.

  The operation and use state of the filling apparatus according to Embodiment 1 of the present invention configured as described above will be described based on the flowcharts of FIGS. 4 and 5.

  In the first embodiment, the light-emitting device 100 shown in FIG. 3 includes the light-emitting element 103 that emits blue light of 460 nm and emits yellow light of 550 nm that is complementary to blue as a sealing resin. A liquid resin material containing a phosphor is potted. In addition, an illumination device 10a that emits light to the sealing resin includes a device that emits blue light of 460 nm.

  First, the operator puts a sealing resin in the syringe 2 and sets it in the connecting pipe 5 of the apparatus main body 20. And the control part 9 is started. The controller 9 horizontally moves the apparatus main body 20 with the nozzle 81 on the sample discharge surface S, and performs temporary discharge for discharging a predetermined amount of sealing resin. The discharged sealing resin is irradiated with light from the illumination device 10a through the irradiation fiber 10b. By this irradiation, the phosphor contained in the sealing resin on the sample discharge surface S emits light. The light from the sealing resin is taken into the measurement unit 11 through the measurement fiber 11a, and the emission intensity is measured and notified to the control unit 9 (step S10).

  The control unit 9 determines whether or not the emission intensity, which is the measurement result from the measurement unit 11, for the temporarily ejected sealing resin is within a specified range, or an abnormal density adjustment range or work stoppage range.

  First, as shown in FIG. 6, the control unit 9 determines whether or not it is within the upper and lower limits of the specified range (step S20). If it is within the specified range, the phosphor content is not too dark and not too thin, so the apparatus main body 20 is moved horizontally to return to the original position, and the main discharge for potting the package unit 102 is instructed.

  It is determined whether or not the light intensity of the measurement result from the measurement unit 11 is outside the upper and lower limits of the specified range, but is within the upper and lower limits of adjustment (density adjustment range) (step S30). . If it is within this range, the control unit 9 instructs the notification unit 12 to sound an alarm (first alarm). For example, an alarm is sounded by an intermittent sound. By this alarm, the operator can recognize that it was in the density adjustment range. The controller 9 performs the sealing resin homogenization process (step S40).

  In the uniforming process, the nozzle 81 is checked for clogging and cleaned, or the discharge amount (filling amount) is adjusted by the control unit 9 to adjust the density. Thereby, it is possible to recover the concentration deviation of the phosphors temporarily generated.

  Furthermore, if the light intensity of the measurement result from the measurement unit 11 is outside the upper and lower limits of the concentration adjustment range, the phosphor concentration is too high (too high) or too thin (too low). ), The control unit 9 instructs the notification unit 12 to sound an alarm (second alarm). For example, a continuous tone alarm is sounded. The operator stops the operation by this alarm. This is based on the assumption that the concentration of the sealing resin included in the work stoppage range from the beginning is placed in the syringe 2 or the sedimentation of the phosphor in the connecting tube 5. In the case of density, even if an adjustment operation is performed, there is no possibility that the density will be recovered, so the operation is stopped (step S50). Accordingly, it is possible to prevent the phosphor from being applied to the container in a state where the concentration of the phosphor is excessively low or high.

  Further, the light from the illumination device 10 a is irradiated into the syringe 2 through the irradiation fiber 10 b directed to the syringe 2. By this irradiation, the phosphor contained in the sealing resin in the syringe 2 emits light. The light from the sealing resin is taken into the measurement unit 11 through the measurement fiber 11a, and the emission intensity is measured and notified to the control unit 9 (step S110).

  The control unit 9 determines whether the emission intensity, which is the measurement result from the measurement unit 11, is within the upper and lower limits of the specified range for the sealing resin in the syringe 2 (step S120). If it is within the specified range, the phosphor content is not too dark and not too thin, so the process is continued.

  It is determined whether the light intensity of the measurement result from the measurement unit 11 is outside the upper and lower limits of the specified range, but is within the upper and lower limits of adjustment (density adjustment range) (step S130). . If it is within this range, the control unit 9 instructs the notification unit 12 to sound an alarm (first alarm). For example, an alarm is sounded by an intermittent sound. By this alarm, the operator can recognize that it was in the density adjustment range. The control unit 9 performs a uniform process for the sealing resin (step S140). In the homogenization process, the driving unit 4 is driven and the stirring unit 3 performs stirring. The stirring by the stirring unit 3 is continuously performed when the measurement result is within the concentration adjustment range. Thereby, it is possible to recover the concentration deviation of the phosphors temporarily generated.

  Furthermore, if the light intensity of the measurement result from the measurement unit 11 is outside the upper and lower limits of the concentration adjustment range, the phosphor concentration is too high or too light, and the operation stop range is too low. 9 instructs the notification unit 12 to sound an alarm (second alarm). For example, a continuous tone alarm is sounded. The operator stops the operation by this alarm. Also in this case, it is assumed that the sealing resin having a concentration included in the work suspension range from the beginning is put in the syringe 2 or that the fluorescent substance is settled in the connecting tube 5. In the case of this density, even if the adjustment work is performed, there is no possibility that the density will be recovered, so the operation is stopped (step S150). Accordingly, it is possible to prevent the phosphor from being applied to the container in a state where the concentration of the phosphor is excessively low or high.

  In the main discharge, the control unit 9 controls the motor unit 6 to fill the package portion 102 with the sealing resin by pushing out the plunger 7. As for the concentration of the phosphor in the syringe 2, the control unit 9 constantly monitors whether the phosphor concentration is out of the specified range and is included in the concentration adjustment range and the work suspension range.

  Further, when the filling of the sealing resin in the syringe 2 is completed, the control unit 9 performs the temporary discharge again by filling the sealing resin, so that the concentration of the phosphor is out of the specified range. Monitor whether it is included in the adjustment range and work stoppage range.

  In this way, the sealing resin discharged onto the sample discharge surface S is irradiated with light from the light source unit 10, and the emission intensity of the phosphor that emits light is measured by the measurement unit 11, thereby discharging the sealing resin. The actual luminescence intensity can be measured. In addition, by combining the discharge for ensuring the wettability of the tip of the nozzle 81 and the discharge of the sealing resin onto the sample discharge surface S, the content of the phosphor without adding a new process for inspection. Can be managed. Furthermore, the actual emission intensity in the syringe 2 can be measured by irradiating the sealing resin in the syringe 2 with light from the light source unit 10 and measuring the emission intensity of the phosphor to emit light by the measurement unit 11.

  Therefore, even when the concentration of the phosphor of the sealing resin discharged from the beginning deviates from the predetermined range or gradually deviates from the predetermined range while being discharged, the control unit 9 causes the light emission intensity. Can be determined as an abnormality included in the density adjustment range and the work suspension range.

  In addition, since the irradiation fiber 10b of the light source unit 10 and the measurement fiber 11a of the measurement unit 11 are disposed below the syringe 2 from which the sealing resin is discharged, the phosphor concentration is abnormal. Since the discharge of the sealing resin can be suppressed, the generation of defective products can be suppressed at an early stage.

(Embodiment 2)
A filling apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings by taking a potting apparatus as an example. Note that the potting device 1 according to the second embodiment is the same as that shown in FIGS.

  The potting device 1 according to the second embodiment is characterized in that the phosphor concentration is adjusted by the discharge amount.

  As shown in the flowchart of FIG. 8, for example, the result of measuring the intensity of the phosphor that emits light by the light irradiated toward the sealing resin on the temporarily ejected sample ejection surface S (see FIGS. 1 and 2) (step) If it is within the range A (S210), the controller 9 performs the filling process with the discharge amount X (step S230).

  If the light intensity of the measurement result from the measurement unit 11 is within the range B (step S240), the control unit 9 performs the filling process with the discharge amount Y (step S250).

  Further, if the light intensity of the measurement result from the measurement unit 11 is within the range C (step S260), the control unit 9 performs the filling process with the discharge amount Z (step S270).

  When the emission intensity is in the other range, the control unit 9 instructs the notification unit 12 to sound an alarm (second alarm). For example, a continuous tone alarm is sounded. The operator stops the work due to this alarm (step S280).

  For ranges A to C, when A <B <C, ejection amounts X to Z are X> Y> Z (see FIG. 7).

  The same control is possible for the sealing resin in the syringe 2. As shown in the flowchart of FIG. 9, for example, as a result of measuring the intensity of the phosphor that emits light by the light irradiated toward the sealing resin in the syringe 2 (step S310), if within the range A (step S310) In S320, the control unit 9 performs the filling process with the discharge amount X (Step S330).

  If the light intensity of the measurement result from the measurement unit 11 is within the range B (step S340), the control unit 9 performs the filling process with the discharge amount Y (step S350).

  Furthermore, if the light intensity of the measurement result from the measurement unit 11 is within the range C (step S360), the control unit 9 performs the filling process with the discharge amount Z (step S370).

  When the emission intensity is in the other range, the control unit 9 instructs the notification unit 12 to sound an alarm (second alarm). For example, a continuous tone alarm is sounded. The operator stops the operation due to this alarm (step S380).

  In this way, the actual emission intensity of the discharged sealing resin can be measured by irradiating the sealing resin with light from the light source unit 10 and measuring the emission intensity of the phosphor that emits light with the measurement unit 11. Therefore, the overall amount can be averaged by decreasing the discharge amount when the concentration is high and increasing the discharge amount when the concentration is low.

  In the second embodiment, the phosphor concentration is adjusted to be uniform by adjusting the discharge amount, but a plurality of emission colors can be changed by intentionally changing the discharge amount of the sealing resin. Various types of light emitting devices can be manufactured.

  For example, a light emitting device in which the discharge amount is reduced at the beginning of discharge of the sealing resin stored in the syringe 2 to reduce the light emission amount by the phosphor of the sealing resin is manufactured. A light emitting device having a large light emission amount due to the phosphor of the stop resin is manufactured. At this time, the discharge amount is adjusted based on the light emission intensity measured by the measurement unit 11. By doing so, a plurality of types of light emitting devices with different emission colors can be manufactured with high accuracy. It should be noted that the order of the discharge amounts can be reduced not only at the beginning and increased later, but can be reversed or increased or decreased in stages.

(Embodiment 3)
A filling apparatus according to Embodiment 3 of the present invention will be described with reference to the drawings by taking a potting apparatus as an example. 10 and 11, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 10 and 11, the potting device 1x according to the third embodiment includes not only the irradiation fiber 10b and the measurement fiber 11a arranged at the lower part of the syringe 2, but also the upper part of the syringe 2. Are also arranged.

  According to the flowchart shown in FIG. 5, the controller 9 determines whether one of the two sets of the irradiation fiber 10b and the measurement fiber 11a is within the concentration adjustment range or the work stoppage range. If the density adjustment range, the equalization process (step S140) is performed, and if it is the work stoppage range, the work is stopped (step S150). Thus, measurement accuracy can be improved by measuring at a plurality of locations.

  Further, by measuring at the lower part of the syringe 2, it is possible to suppress the discharge of the liquid resin in a state where the phosphor concentration is abnormal, so that the occurrence of defective products can be suppressed at an early stage.

  In the third embodiment, two sets of the irradiation fiber 10b and the measurement fiber 11a are arranged at the lower and upper portions of the syringe 2 to measure the light emission intensity by two sealing resins. It can arrange | position in three or more places according to the magnitude | size of.

(Embodiment 4)
A filling apparatus according to Embodiment 4 of the present invention will be described based on the drawings with a potting apparatus as an example. Since the potting device 1x according to the fourth embodiment is the same as that shown in FIGS. 10 and 11, the description of the configuration is omitted.

  As shown in FIG. 10 and FIG. 11, the potting device according to the fourth embodiment discharges the phosphor stored in the syringe 2 in a state where the concentration of the phosphor is different between the lower layer and the upper layer with a dispersant or the like. Thus, it is possible to manufacture a plurality of types of light emitting devices whose emission colors are intentionally changed.

  For example, the sealing resin stored in the syringe 2 is adjusted so that the concentration of the upper-layer phosphor is low (the emission intensity is small) and the concentration of the lower-layer phosphor is high (the emission intensity is high). By doing so, it is possible to manufacture a light emitting device in which the amount of light emitted by the phosphor of the sealing resin is increased at the beginning of ejection, and in the latter half, a light emitting device in which the amount of light emitted by the phosphor of the sealing resin is reduced can be manufactured. Whether or not the distribution of the adjusted concentration of the sealing resin can be maintained in the syringe 2 is determined by the two sets of the irradiation fiber 10b and the measurement fiber 11a disposed at the lower and upper portions of the syringe 2. By measuring and monitoring, the concentration is adjusted and the sealing resin can be supplied stably.

(Embodiment 5)
A filling apparatus according to Embodiment 5 of the present invention will be described with reference to the drawings by taking a potting apparatus as an example. The potting device 1y according to the fifth embodiment is the same as that shown in FIG. 10 as shown in FIG.

  As shown in FIG. 12, the potting device according to the fifth embodiment emits light of the sealing resin discharged to the package unit 102 with the irradiation fiber 10b and the measurement fiber 11a facing the package unit 102 which is a container. Since the intensity is measured, the actual light emission intensity of the light emitting device 100 in which the light emitting element 103 is sealed with the sealing resin can be measured, so that variations in the light emission intensity of the light emitting device 100 can be suppressed.

(Embodiment 6)
A filling apparatus according to Embodiment 6 of the present invention will be described with reference to the drawings by taking a potting apparatus as an example.

  In the first to fifth embodiments, the liquid resin material stored in the syringe 2 is supplied to the pump unit 8 and mechanically pushed out and filled by the plunger 7 as an example. However, in the sixth embodiment, Such a filling device is a potting device that directly pushes and fills the liquid resin material stored in the syringe with air. In FIG. 13, the same components as those of the potting apparatus 1 shown in FIG.

  Since the potting device 1z shown in FIG. 13 is an air type, the discharge amount is adjusted by adjusting the air supplied from the supply pipe 223 by the control unit 9x, thereby extruding and dropping the liquid resin material stored in the syringe 2. Depending on the amount to be made. Therefore, if the emission intensity measured by the measurement unit 11 described in the flowchart shown in FIG. 9 is in the range A, the discharge amount X is set, the discharge amount Y is set in the range B, and the discharge amount Z is set in the range C. It is possible by the control unit 9x.

  In addition, since the potting apparatus shown in FIG. 13 also includes the stirring unit 3 that stirs the sealing resin in the syringe 2, the homogenization process described in the flowchart shown in FIG. This can be done by rotating.

  As described above, the same effect can be obtained by applying the present invention not only to the mechanical potting device but also to the air type potting device.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment. In this embodiment, stirring is performed by a stirring blade (see FIG. 1), but it is sufficient that the sealing resin can be stirred. Therefore, heating means may be provided to perform stirring by heat convection. In the present embodiment, the emission intensity of the phosphor is measured by directing the irradiation fiber 10b and the measurement fiber 11a toward the syringe 2 until the sealing resin is stored and discharged. If a light-transmitting pipe line or the like is formed in any one of the paths located, for example, the irradiation fiber 10b and the measurement fiber are connected to the connecting pipe 5 and the pump unit 8 shown in FIGS. It is possible to measure the light emission intensity of the phosphor with 11a facing.

  Furthermore, in this embodiment, for example, as shown in FIG. 1, the emission intensity of the phosphor is measured by directing the irradiation fiber 10b and the measurement fiber 11a to the sealing resin discharged onto the sample discharge surface S. However, the emission intensity of the phosphor may be measured by directing the irradiation fiber 10b and the measurement fiber 11a to the sealing resin discharged to the package portion 102.

  Since the filling device of the present invention can keep the chromaticity uniform by suppressing the variation in emission intensity of the phosphor contained in the liquid resin, the filling device for filling the container with the liquid resin containing the phosphor And it is suitable for the inspection method of the filling device.

DESCRIPTION OF SYMBOLS 1, 1x, 1y, 1z Potting apparatus 2 Syringe 3 Stirring part 4 Drive part 5 Connection pipe 6 Motor part 7 Plunger 8 Pump part 9, 9x Control part 10 Light source part 10a Illuminating device 10b Irradiation fiber 11 Measurement part 11a Measurement fiber 11b Optical measuring device 20 Device main body 21 Body portion 22 Tip portion 81 Nozzle 100 Light emitting device 101 Lead frame 101b Anode frame 101c Cathode frame 102 Package portion 102a Anode terminal 102b Cathode terminal 102x Recessed portion 103 Light emitting element 104 Resin sealing portion 104a Phosphor 104b Silicone resin 105 Wire 221 Reduced diameter portion 222 Supply port 223 Supply pipe

Claims (7)

In a filling apparatus that fills and seals a liquid resin containing a phosphor that is excited by light from a light emitting element as a sealing resin, the light emitting element fills a container disposed at the bottom,
A light source unit that irradiates a light-transmitting path located between the time when the sealing resin is stored and discharged, and emits a phosphor;
A measurement unit for measuring the intensity of light emitted from the phosphor;
A filling device comprising: a control unit that determines that an abnormality occurs when the emission intensity of the phosphor measured by the measurement unit is out of a predetermined range. The filling device according to claim 1, wherein the light source unit and the measurement unit are disposed below a syringe in which the sealing resin is stored. The filling device according to claim 2, wherein the light source unit and the measurement unit are arranged at one or more other locations in addition to the lower portion of the syringe. The filling device according to any one of claims 1 to 3, further comprising a notification device that notifies the abnormality when the control unit determines that the abnormality is present. A stirring device for stirring the phosphor in the syringe in which the sealing resin is stored is provided,
The filling device according to any one of claims 1 to 4, wherein the control unit operates the stirring device based on a light emission intensity of the phosphor measured by the measurement unit. The filling device according to any one of claims 1 to 5, wherein the control unit adjusts a discharge amount according to a light emission intensity of the phosphor measured by the measurement unit. In the inspection method of the filling device that fills and seals the container in which the light emitting element is disposed at the bottom, using a liquid resin containing a phosphor that is excited by light from the light emitting element to emit light as a sealing resin,
Irradiating light for causing a phosphor to emit light from a light source part toward a syringe formed by a light-transmitting container in which the sealing resin is stored;
Measuring the intensity of the light emitted by the phosphor with a measuring unit;
And a step of determining an abnormality by the control unit based on the emission intensity of the phosphor measured by the measurement unit.

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