JP2011222868A - Led element inspection and taping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of unnecessary LED element production and storage thereof, until having sufficient numbers of required grade LED elements, situations caused by the color tone at light emission of the LED elements being slightly different as a result of the disorder of the crystal structure during manufacturing; LED elements are inspected and graded by brightness and color prior to shipment, and are required to be sealed in a certain quantity, by tape, in order to ship.SOLUTION: An LED element inspection and taping apparatus causes LED elements to emit light and inspects brightness and color of the light to grade the elements. Subsequently, the apparatus stores inspected results as mapping data in a storage, and punches only the LED elements that conform to setting criteria and then sticks these elements to a tape.

Description

  The present invention relates to an LED element manufacturing apparatus. LED element inspection taping device for ranking LED elements 20 mounted in the lead frame 21 as shown in Fig. 1 (1) according to brightness and color tone and taping the same rank on a single tape It is.

The LED element 20 has a shape as shown in the enlarged view of (2) of FIG. A semiconductor light emitting device (not shown) is embedded in the package 202 under the seal 203.
However, the above-mentioned semiconductor light emitting devices have slightly different brightness and color tone due to the disorder of the crystal structure at the time of manufacture, and many LED elements 20 having the same rank of brightness and color tone can be manufactured in one production process. It is difficult.

  In particular, the LED element 20 used as a backlight for a white color or a light bulb color and a liquid crystal display device used for illumination is required to be delivered as an LED element 20 having the same brightness and color tone.

As a conventional example, Patent Document 1 (Japanese Patent Application No. 2009-251143) by the same applicant has been proposed. The semiconductor light emitting device manufacturing apparatus 90 disclosed in Patent Document 1 has a configuration as illustrated in FIG.
Initially, the direct contact needle 92 is brought into contact with each semiconductor light emitting device 911 provided by the wafer ring 91 to conduct light emission. The light emission of each semiconductor light emitting device 911 at this time is imaged by the camera 93 and the luminance and color tone are measured.

The semiconductor light emitting device 911 whose luminance and color tone are measured is sucked and held by the head 97 and carried into the tray 94. At this time, if the wiring is made and the sealing material containing the phosphor is enclosed in the tray 94 by the phosphor encapsulating head 95, the LED element is completed.

  The semiconductor light emitting device 911 placed on the tray 94 contains several types of phosphors from several types of phosphor encapsulating head 95 so as to obtain a predetermined luminance and color tone based on the luminance and color tone data captured by the camera 93. The sealing material is enclosed in a tray 94 on which the semiconductor light emitting device 911 is placed.

As a result, the brightness and color tone of the semiconductor light emitting device 911 are changed in the tray 94 to manufacture products of the same rank, thereby eliminating wasteful inventory.


Japanese Patent Application No. 2009-251143

The products completed by the semiconductor device manufacturing apparatus 90 according to Patent Document 1 described above are unified in the same rank in luminance and color tone. However, it takes time to produce a single semiconductor device. Over time, the encapsulant contained in the phosphor encapsulating head 95 is cured, or the phosphor contained in the encapsulant precipitates and spots on the phosphor, resulting in products of the same brightness and color tone. There was something that could not be done.
Therefore, at present, the LED element 20 is mass-produced in a state where the LED element 20 is fixed to the lead frame 21 via the legs 204 as shown in FIG. This is punched out as shown in (2) of Fig. 1, and the brightness and color tone of each LED element 20 is measured and ranked according to the specified classification specifications and stocked. Taped and shipped.

Therefore, as shown in (1) of FIG. 1, the countless LED elements 20 are provided on the lead frame 21. Therefore, after punching the LED element 20 into the shape shown in (2) of FIG. 1, the LED element 20 is aligned by a parts aligner such as a parts feeder, and the LED element 20 is caused to emit light by being electrically connected to the electrode 201 to measure luminance and color tone. They are then ranked into the specified classification specifications.
The ranked LED elements 20 are stored in a state of being ranked into containers, bottles or the like until a specified amount is reached. When the LED elements 20 ranked according to the specified classification specification reach the specified amount, the taping operation is performed and shipped as a single tape.
Accordingly, the LED elements 20 of different ranks are in stock, resulting in poor yields and pressure on management.

As shown in FIG. 1 (2), when the LED elements 20 formed into small pieces are aligned using a parts feeder or the like, the LED elements 20 formed into small pieces are aligned while being stirred by a stirring unit or a vibrating unit of an aligner. At this time, the surfaces of the LED elements 20 often come into contact with each other and are damaged or broken, which often causes defective products.
The LED elements 20 that have been ranked into the specified classification specifications, preferably in the required amount when needed, are punched out of the lead frame 21 and immediately taped to prevent scratches and dust. It is desirable to make it.
Unnecessary LED elements 20 are left attached to the lead frame 21, and if stocked, they are less likely to be scratched and easier to manage.
If the LED elements 20 are manufactured with the aim of brightness and color tone close to the classification specifications specified for each lead frame 21, the products gather at a certain rank and the amount of stock can be reduced.

Therefore, a lead frame comprising a plurality of work machines arranged on a line, a plurality of work tables installed on the line on which the work machines are arranged, and transfer means for transferring the work table to a work position of the work machine. In the LED inspection taping device that inspects the upper LED element, stores it in the storage unit, and taps it, the plurality of work machines measure the luminance of each LED element of the lead frame and store the data for each LED element in the storage unit A luminance inspection work machine for storing, a color inspection work machine for measuring the color tone of each LED element of the lead frame and storing data for each LED element in a storage unit; the luminance inspection work machine for the lead frame; and Based on the map data stored in the storage unit and a printing work machine that prints a bar code for collation with the map data created by storing the data for each LED element in the storage unit by the color inspection work unit. A punching work machine that punches and picks up only LED elements that meet the set conditions, and a control means that controls a taping work machine that taps the LED elements picked up by the punching work machine. Based on the luminance data and color tone data for each LED element measured by the luminance inspection work machine and the color tone inspection work machine and stored in the storage unit, type data classified into a plurality of stages is formed for each characteristic of each LED element. It is an object of the present invention to provide an LED element inspection taping device that controls to print the barcode on the printing work machine.

The plurality of work machines further include a lead frame push-out work machine, and the work means performs punching and taping for each type that meets the set conditions based on the brightness and color tone recorded on the barcode. LED device inspection taping device that controls the work,
Further, when the barcode is not read in the lead frame extrusion work machine, the control means causes each work machine to work, and when the bar code is read, the brightness inspection work machine, the color inspection work machine, LED element inspection taping device controlled so as to omit the work of the printing machine,
The plurality of working machines further include a lead frame storage working machine,
The printing work machine provides an LED element inspection taping device which prints the barcode on a predetermined position of the lead frame.

  Since the lead frame storage box 252 can store a large number of lead frames 21 in a stacked manner, it can be managed collectively without taking up space. Since the lead frame storage box 252 and the lead frame supply box 251 can be used in common, they are efficient.

  In general, there are about 8 types of ranks for luminance and color tone, but if you rank them in detail, the classification becomes more than 200 and the amount of stock becomes large, and the lead frame supply box 251 and lead frame storage box 252 like this application are compact This is economical because a large amount of lead frame 21 can be stored.

The ranking of brightness and color of the same rank is measured and taped immediately, so there is no mistake in ranking. Even during stock, the LED element 20 is stored on the lead frame 21 identified by a bar code or the like, so that mistakes and breakage can be prevented, and defective products can be prevented from being discharged.

The LED element 20 is immediately punched by the punching part 45 as measured by the luminance measuring part 30 and the color tone measuring part 35, and taping is directly performed by the taping part 60. .
Furthermore, since the appearance inspection of the LED element 20 is also performed by the appearance inspection section 50, the punching section 45 can inspect chips and scratches at the time of punching and eliminate defective products.

Conventionally, the LED element 20 is punched by the punching portion 45, and the LED element 20 as a single product is stored in a plurality of containers for each rank. When necessary, the LED elements 20 were put into an aligner such as a parts feeder, and aligned and taped while stirring and vibrating.
According to the method of the present invention, since the LED elements 20 are not stirred or vibrated and do not contact each other, scratches and breakage do not occur, and defective products are not produced during alignment.

  Further, in the apparatus according to the present invention, since the appearance inspection unit 50 performs the appearance inspection after the LED element 20 is punched, if the LED element 20 is chipped or scratched at the time of punching, it is excluded as a defective product.

  The results measured by the luminance measurement unit 30 and the color tone measurement unit 35 are printed on the lead frame 21 by the printing unit 40 and are distinguished by the barcode and stored in the storage unit 3. When the stock quantity is stored and reaches the specified quantity, the quantity can be confirmed in the storage unit 3 and the taping operation can be performed at once, which is efficient and economical.

  The luminance measuring unit 30 and the color measuring unit 35 contact the electrode 201 of the LED element 20 with the luminance increasing terminal 31 and the color increasing terminal 36 to cause the LED element 20 to emit light, so that not only the luminance and color tone but also energization is ensured. It is also possible to inspect the electrical characteristics to confirm that.

  The lead frame supply box 251 and the lead frame storage box 252 can be proved in common. In the figure, only one cylinder is drawn on the cylinders 253 and 254. However, the cylinders 253 and 254 are moved up and down to stop at a predetermined position, and can supply and store a plurality of stored lead frames 21 as well as a large number of leads. If the frame supply box 251 and the lead frame storage box 252 are arranged side by side and a moving device such as a conveyor that moves in the Y direction is added, a large number of lead frames 21 can be stored and automatically fed. Can be processed efficiently in a short time.

  Since the sliders 711, 712, 713, 714, 715 are arranged uniformly and operate simultaneously by the slider motor 72 and the slider screw shaft 73, it is possible to prevent erroneous feeding and interference.

A uniform product can be obtained even by the method of preparing the LED elements 20 of the same color by blending the sealing materials as presented in Patent Document 1, but if the method using the lead frame 21 is used, a large amount of LED elements 20 can be obtained in a short time. Can be produced.
As a result, it is possible to tap and ship LED elements 20 having ranks that meet the required amount of setting conditions when necessary.

It is also possible to manufacture all LED elements 20 of the lead frame 21 to approximate the same rank using the method of Patent Document 1, and even if some errors occur, those with different ranks are punched out It is economical because it is stocked without being sold. The synergistic effect of the present invention and Patent Document 1 can also be exhibited.

The working machine of the present invention refers to the print reading unit 55, the luminance measurement unit 30, the color tone measurement unit 35, the printing unit 40, the punching unit 45, the appearance inspection unit 50, and the taping unit 60, which are connected to the slide unit 70 on the line. The work tables of the XY tables 301, 351, 401, and 451 are arranged on each work machine as necessary. An example of specific work is described below.

  The lead frame 21 on which the LED element 20 is mounted is transferred onto the concave portion of the slide part 70 by the sliders 711, 712, 713, 714, 715 on the work table described above, and each LED element 20 is inspected and the data is stored in the storage part 3 as mapping data Then, the LED element inspection taping device that selects and seals the LED element 20 that meets the set conditions and taps it with the taping unit 60.

  The luminance measurement unit 30 (referred to as a luminance inspection work machine) transfers the lead frame 21 on which the LED element 20 is mounted by the XY table 301 as a work table between the luminance push-up terminal 31 and the luminance measurement camera 32, and each LED element 20 This is a working machine that measures the brightness by energizing the power.

  Similarly, the color tone measurement unit 35 (color tone inspection work machine) has all the LED elements of the lead frame 21 mounted with the XY table 351 as a work table interposed between the color tone push-up terminal 36 and the color tone measurement camera 37. It is a working machine that energizes 20 and emits light to measure its color tone.

  The printing unit 40 (printing machine) is used to store the inspection result data of the brightness and color tone of the LED element 20 mounted on the lead frame 21 in the storage unit 3 and collate it with the map data of the unit 3 This is a working machine that prints the barcode on the lead frame 21.

  The punching unit 45 (referred to as a punching machine) is a punching arm 46 that punches out only the LED elements 20 that meet the set conditions based on the map data stored in the storage unit 3 and sucks and holds them by the suction head 591. It is a work machine that is transported to the inspection unit 50.

The taping unit 60 (referred to as a taping machine) is punched by the punching unit 45, and the LED element 20 that has been visually inspected by the appearance inspection unit 50 is sealed between the tape 66 and the adhesive tape 67 to form the tape take-up reel 61. A work machine that winds up.
As described above, all the control means of the present invention are controlled by the control unit 2.

The extruding unit 56 is a working machine that extrudes the lead frame 21 supplied from the lead frame supply box 251 to the slide unit 70 by the extruding arm 561 and causes the print reading camera 551 to determine the presence or absence of the barcode on the lead frame 21.
An embodiment of the main body 1 of the LED element inspection taping device configured as described above will be described in detail below.

In the present invention, the luminance measurement unit 30 measures the luminance of the LED elements 20 mounted on the lead frame 21 in large quantities, the color tone measurement unit 35 measures the color tone, and then the information is printed on the lead frame 21 by the printing unit 40.
Next, the LED element 20 having a rank suitable for the setting conditions is punched by the punching part 45, the appearance inspection is performed by the appearance inspection part 50, the LED element 20 is taped by the taping part 60 and wound on the tape take-up reel 60, and the lead frame We propose a device that can tap LED elements 20 from 21 and ship them together.

  An LED element 20 is mounted on the lead frame 21 in a shape as shown in FIG. Each LED element 20 is fixed to the lead frame 21 with the legs 204 adhered, and the LED element 20 and the lead frame 21 are not electrically connected by a curing agent or the like.

Accordingly, when the terminal is brought into contact with the electrode 201 on the back surface of the LED element 20 in FIG. 1 (2), the semiconductor device 205 embedded under the seal 203 emits light, and the brightness and color tone are measured through the light-transmitting seal 203. The
The semiconductor device 205 is sealed by a package 202 and a seal 203 and is protected from contact with dust or the like.

The lead frame 212 has a slide hole 211, and the slide pin 721 of the slider 71 is inserted when the lead frame 212 slides and moves in the recess of the slide portion. All the sliders 711, 712, 713, 714, 715 have the same configuration.
As a result, the lead frame 21 is transported on the slide portion 70 in the X1 direction along with the movement of the slider 71, stopped on the XY tables 301.351, 401, 451 which are the respective work tables, and the measurement work, the printing work, and the punching work. Storage work is performed.

  Sliders 71 (711, 712, 713, 714, 715) for inserting the slide pins 721 into the slide holes 211 of the lead frame 21 are installed at equal intervals, and reciprocate in the X direction by rotating the slider screw shaft 73 by driving the slider motor 72. All of these controls are performed by the control unit 2.

The lead frame 21 provided by being inserted into the supply box 251 is stacked and stored in a number of layers in the lead frame supply box 251.
The lead frame supply box 251 that moves up and down to a specified height by the cylinder 253 moves the pushing arm 561 in the X1 direction at the stop position, so that the lead frame 21 accommodated in the lead frame supply box 251 moves to the slide portion 701. The lead frame 21 is pushed out to the print reading camera 551 of the print reading unit 55 to a position where the barcode printed by the printing unit 40 can be read in advance.

  At this time, the slider 71 is configured to move up and down by the slider cylinder 719. When the print reading unit 55 reads the bar code of the lead frame 21 or confirms that there is no bar code, the slider cylinder 719 is contracted and the slider 71 is contracted. 711 descends and the slide pin 721 is inserted into the slide hole 211 of the lead frame 21.

  Next, the slider 711 is moved to the position of the slider 712 by driving the slider motor 72. As a result, the lead frame 21 pushed out from the lead frame supply box 251 moves in the X1 direction on the concave portion of the slide unit 701 and stops on the XY table 301 of the luminance measuring unit 30.

Next, the slider cylinder 719 is extended, the slider 71 is raised, and the slide pin 721 is removed from the slide hole 211 of the lead frame 21. Next, the lead frame holding lid 33 is lowered by the operation of a cylinder (not shown) on the lead frame 21 stopped on the XY table 301 of the luminance measuring unit 30, and is slid and transferred on the concave portion of the slide unit 701. The lead frame 21 is pushed up and down by the XY table 301 and the REIT frame holding lid 33.

The XY table 301 and the lead frame holding lid 33 have holes in the portion of the LED element 20 of the lead frame 21 and have a net shape. The portions other than the LED element 20 of the lead frame 21 lead to the XY table 301 and lead. The lead frame 21 is sandwiched between frame holding lids 33 and fixed so as not to slightly move.
The four XY tables 301, 351, 401, and 451 have the same structure. The three lead frame holding lids 33, 38, and 48 have the same structure. In the case of the XY table 401, there is no work of pushing up from the bottom, and further, printing must be performed with a laser beam or the like from the top. Therefore, the lead frame pressing lid is not attached.
The four XY tables 301, 351, 401, and 451 are provided with a Y-direction moving table 452 and an X-direction moving table 453 so that they can move within the work range.

Next, the XY table 301 conveys the lead frame 21 between the luminance measurement camera 32 of the luminance measurement unit 30 and the luminance increase terminal 31, and causes the luminance increase terminal 31 to contact the electrode 201 of each LED element 20 so that the LED element 20 emits light. Then, the brightness measurement camera 32 takes an image.

At this time, the LED element 20 is sequentially moved to the position of the luminance push-up terminal 31 by the movement of the XY table 301, and is emitted and imaged to measure the luminance. Then, the luminance of the LED element 20 imaged by the luminance measurement camera 32 is stored in the storage unit 3.
The brightness measurement state is measured by issuing all the LED elements 20 in a state where the XY table 301 is moved between the brightness measurement camera 32 and the brightness push-up terminal 31 as shown in FIG.

When the luminance of all the LED elements 20 is measured, the XY table 301 returns to the original position as shown in FIG. 2 so as to return the lead frame 21 to the original slide unit 701.
Then, the lead frame holding lid 33 is raised to open the lead frame 21.

Next, the slider 712 descends and the slide pin 721 is inserted into the slide hole 211 of the lead frame 21. Similarly, the slider 711 next inserts the slide pin 721 into the slide hole 211 of the next lead frame 21 pushed out by the push-out portion 56 and sets the lead frame 21 to be transferred to the XY table 301.

  The lead frame 21 into which the slide pin 721 of the slider 721 is inserted by the drive of the slide motor 72 and the lead frame 21 into which the slide pin 721 of the slider 711 is inserted are the lead frame 21 to which the slider 711 is fixed. The lead frame 21 to which the slider 712 is fixed is slid and transferred to the position of the slider 713.

Similar to the above-described operation, the XY table 301 and the XY table 351 are moved down to the lead frame 21 and the lids 33 and 38 are lowered as shown in FIG. Start measurement.

That is, the lead frame 21 slid and transferred to the XY table 351 of the color tone measuring unit 35 is covered with the pressing cover 38 in the same manner as the luminance measuring unit 30 in the previous process, and the XY between the color tone raising terminal 36 and the color tone measuring camera. The table 351 moves, the LED elements 20 fixed to the lead frame 21 are sequentially emitted by bringing the color tone push-up terminal 36 into contact with the electrode 201 and imaged by the color tone measuring camera 35, and the color tone data is stored in the storage unit 3.

The storage unit 3 classifies the stored luminance and color tone, ranks them, and stores them as map data.
As described above, after all the LED elements 20 of the lead frame 21 are measured, the measurement data is stored as map data in the storage unit 3, converted into a bar code, and can be recognized and controlled by the control unit 2.

The lead frame 21 in which the map data is recorded in the storage unit 3 is transferred to the XY table 401 by the slider 713 and moved directly below the printing box 41 as shown in FIG. Is printed so that it does not disappear easily.

The XY table 401 on which the printed lead frame 21 is placed returns to the position of the slide portion 70 as shown in FIG. 2, and the lead frame 21 is transferred to the position of the slider 715 by the slider 714.
The lead frame 21 transferred onto the XY table 451 is sandwiched and fixed between the XY tables 451 by a lead frame pressing lid 48. Then, it moves between the suction head 591 and the punching arm 46 as shown in FIG.

Here, the LED element 20 fixed to the lead frame 21 with the legs 204 is pushed up from below by the punching arm 46 and punched out. This state is the state illustrated by FIG.
At the same time, the LED element 20 is sucked and held by the suction head 591.

At this time, there is an air suction portion (not shown) in the vicinity of the punched portion 45, and measures are taken to suck the debris and debris generated when the LED element 20 is punched by the punched portion 45 so as not to be scattered.
The suction head 591 sucks and holds the LED element 20, rotates the head screw shaft 594 by driving the head motor 593, moves in the X1 direction, and transfers the LED element 20 onto the appearance inspection table 51.

The LED element 20 placed on the appearance inspection table 51 of the appearance inspection unit 50 is imaged by the appearance inspection camera 52 and inspected for a scratch or notch on the surface of the LED element 20.
What is determined to be a good LED element 20 in the appearance inspection is transferred to the taping unit 60 by the suction head 592. If the appearance inspection result is poor, the suction holding by the suction head 592 is released before being transferred to the taping unit 60, and is released into a disposal box (not shown) and discarded.
Further, although the suction head is used in this embodiment, a gripping type head may be used privately according to the shape.

The LED element 20 transferred to the taping unit 60 by the suction head 592 is placed on the tape 66 wound on the tape winding reel 62.
The state at this time is confirmed by the taping confirmation camera 64 that the LED element 20 is placed at a predetermined position of the tape 66, and the tape is automatically fed.
In this embodiment, the distance between the suction heads 591 and 592 is the same distance between the punching arm 46 and the appearance inspection table 51, and the mounting position just below the appearance inspection table 51 and the taping confirmation camera 64 is also the same distance. Accordingly, the LED element 20 can be transferred from the punching arm 46 to the mounting position directly below the taping confirmation camera 64 by the pair of suction heads 591 and 592 through the appearance inspection table 51.

The tape 66 is sequentially wound by a winding tape 61, and the LED elements 20 are arranged at equal intervals on the tape 66 wound by the tape winding reel 62.
Next, the LED element 20 is sealed by the adhesive tape 67 wound out from the adhesive tape winding reel 63. The LED element is sealed in the tape bonding section 65, and the LED element 20 sealed in the tape is wound around the tape take-up reel 61 and shipped.

At this time, the LED element 20 not punched by the punching arm 46 at the punching portion 45 returns to the position of the XY table 451 in FIG. 2 while being fixed to the lead frame 21, and slides on the slide portion 70 by the slider 75 to lead. It is stored in the frame storage box 252.

Such a forward feeding operation is forwarded by driving the slider motor 72 and rotating the slider screw shaft 73, and sliding the sliders 711, 712, 713, 714, 715 arranged at equal distances in the X direction. The lead frame 21 is stored in a lead frame storage box 252 and stocked.

With the LED element inspection taping device of the present invention as described above, the LED element 20 having a rank that meets the setting conditions is selected and punched out while being fixed on the lead frame 21, and the specified amount is obtained by taping. Can be rolled up and shipped.
Unnecessary rank LED elements 20 can be stored and stored in the lead frame storage box 252 while being fixed to the lead frame 21.

The lead frame storage box 252 in which the LED elements 20 that were not selected in this work are stored is identified by reading the barcode of the lead frame 21, and the luminance measuring unit 30, the color measuring unit 35, and the printing unit 40 are omitted. Then, the LED elements 20 that have been transferred to the position of the XY table 451 of the punching unit 45 and not previously punched based on the map data stored in the storage unit 3 are punched and taped as necessary.
The lead frame 21 is stored in the lead frame storage box 252.

With the apparatus of the present invention, it is possible to reasonably manufacture LED elements 20 only when necessary, tap the necessary number, and efficiently stock unnecessary LED elements 20.
Since the lead frame storage box 252 can store a large number of lead frames 21 in a stacked manner, it can be managed collectively without taking up space. Since the lead frame storage box 252 and the lead frame supply box 251 can be used in common, they are efficient.

The ranks of brightness and color tone are usually about 8 types, but if they are ranked in detail, they are classified into 200 or more, resulting in a large amount of stock and lead frame supply box 251 and lead frame storage box 252 as in the present application. Is economical because it is compact and can accommodate a large number of lead frames 21.
The ranking of brightness and color of the same rank is measured and taped immediately, so there is no mistake in ranking. Even during stock, the LED element 20 is stored on the lead frame 21 identified by a bar code or the like, so that mistakes and breakage can be prevented, and defective products can be prevented from being discharged.

The LED element 20 is immediately punched by the punching part 45 as measured by the luminance measuring part 30 and the color tone measuring part 35, and taping is directly performed by the taping part 60. .
Furthermore, since the appearance inspection of the LED element 20 is also performed by the appearance inspection section 50, the punching section 45 can inspect chips and scratches at the time of punching and eliminate defective products.

Conventionally, the LED element 20 is punched by the punching portion 45, and the LED element 20 as a single product is stored in a plurality of containers for each rank. When necessary, the LED elements 20 were put into an aligner such as a parts feeder, and aligned and taped while stirring and vibrating.
According to the method of the present invention, since the LED elements 20 are not stirred or vibrated and do not contact each other, scratches and breakage do not occur, and defective products are not produced during alignment.
Further, in the apparatus according to the present invention, since the appearance inspection unit 50 performs the appearance inspection after the LED element 20 is punched, if the LED element 20 is chipped or scratched at the time of punching, it is excluded as a defective product.

  The results measured by the luminance measurement unit 30 and the color tone measurement unit 35 are printed on the lead frame 21 by the printing unit 40 and are distinguished by the barcode and stored in the storage unit 3. When the stock quantity is stored and reaches the specified quantity, the quantity can be confirmed in the storage unit 3 and the taping operation can be performed at once, which is efficient and economical.

  The luminance measuring unit 30 and the color measuring unit 35 contact the electrode 201 of the LED element 20 with the luminance increasing terminal 31 and the color increasing terminal 36 to cause the LED element 20 to emit light, so that not only the luminance and color tone but also energization is ensured. It is also possible to inspect the electrical characteristics to confirm that.

  The lead frame supply box 251 and the lead frame storage box 252 are common and only one is drawn on the cylinders 253 and 254 in the figure, but the cylinder is stopped and stored in a predetermined position while being moved up and down by the cylinders 253 and 254. In addition to supplying and storing a plurality of lead frames 21, a large number of lead frames can be provided by arranging a large number of lead frame supply boxes 251 and lead frame storage boxes 252 side by side and adding a moving device such as a conveyor that moves in the Y direction. A large amount of 21 can be stored and automatically fed, and a large amount of stock can be processed efficiently in a short time.

  Since the sliders 711, 712, 713, 714, 715 are arranged uniformly and operate simultaneously by the slider motor 72 and the slider screw shaft 73, it is possible to prevent erroneous feeding and interference.

A uniform product can be obtained even by the method of preparing the LED elements 20 of the same color by blending the sealing materials as presented in Patent Document 1, but if the method using the lead frame 21 is used, a large amount of LED elements 20 can be obtained in a short time. Can be produced.
As a result, it is possible to tap and ship LED elements 20 having ranks that meet the required amount of setting conditions when necessary.

It is also possible to manufacture all LED elements 20 of the lead frame 21 to approximate the same rank using the method of Patent Document 1, and even if some errors occur, those with different ranks are punched out It is economical because it is stocked without being sold. The synergistic effect of the present invention and Patent Document 1 can also be exhibited.

Although the present invention is an LED element rank dividing device, it can be applied to various electronic component ranking devices.

1 is a view of a lead frame 21 and an LED element 20 of an embodiment according to the present invention. It is a bird's-eye view of the LED element test | inspection taping apparatus of the Example which concerns on this invention. FIG. 2 is an enlarged view of FIG. FIG. 3 is a bird's-eye view of the state of the XY table during work as viewed from the opposite side of FIG. It is a figure of a prior art example.

1
Body
2
Control unit
Three
Storage
20
LED element
201
electrode
202
package
203
sticker
204
leg
205
Semiconductor light emitting device
twenty one
Lead frame
211
Slide hole
251
Lead frame supply box
252
Lead frame storage box
253
Cylinder
254
Cylinder
30
Luminance measurement unit
301 XY table
31
Brightness push-up terminal
32
Brightness measurement camera
33
Lead frame holding lid
35
Color tone measurement unit
351 XY table
36
Color tone push-up terminal
37
Color measurement camera
38
Lead frame holding lid
40
Print section
401 XY table
41
Printing box
45
Punched part
451
XY table
452
Y direction moving table
453
X-direction moving table
46
Punching arm
48 Lead frame holding lid
50
Appearance inspection department
51
Appearance inspection table
52
Appearance inspection camera
55
Print reading section
551
Print reading camera
56
Extruding part
561
Extrusion arm
591
Suction head
592
Suction head
593
Head motor
594
Head screw shaft
60
Taping part
61
Tape take-up reel
62
Tape reel
63 Adhesive tape reel
64
Taping confirmation camera
65
Tape bonding part
66
tape
67
Adhesive tape
70
Slide part
701
Slide part
702
Slide part
703
Slide part
704
Slide part
71
Slider
711
Slider
712
Slider
713
Slider
714
Slider
715
Slider
719 Slider cylinder
72
Slider motor
721 Slide pin
73
Slider screw shaft
90
Semiconductor device manufacturing equipment
91
Wafer ring
911 Semiconductor light emitting device
92
Stylus
93
camera
94
tray
95
Phosphor enclosure head
96
camera
97
head

Claims (5)

A plurality of work machines arranged on a line;
A plurality of worktables installed on a line on which the working machine is disposed;
In the LED inspection taping device for inspecting the LED element on the lead frame composed of transfer means for transferring the work table to the work position of the work machine and storing and taping the LED element in the storage unit,
The plurality of work machines measure the brightness of each LED element of the lead frame and store the data for each LED element in the storage unit;
A color tone inspection working machine that measures the color tone of each LED element of the lead frame and stores data for each LED element in a storage unit;
A printing work machine that prints a barcode for checking the map data created by storing data for each LED element in the storage unit in the brightness inspection work machine and the color tone work work machine on the lead frame,
A punching work machine that punches and picks up only LED elements that meet the setting conditions based on the map data stored in the storage unit;
A taping machine that taps the LED elements picked up by the punching machine,
And control means for controlling
The control means is classified into a plurality of stages for each characteristic of each LED element based on the luminance data and color tone data for each LED element measured by the luminance inspection work machine and the color tone inspection work machine and stored in the storage unit. An LED element inspection taping device that performs control for forming classification data and causing the printing machine to print the barcode.
The plurality of working machines further includes a lead frame extrusion working machine,
2. The LED according to claim 1, wherein the working means performs control for causing each working machine to perform punching and taping for each type that matches a setting condition based on luminance and color tone recorded in the barcode. Element inspection taping device.
When the bar code is not read in the lead frame extrusion work machine, the control means causes each work machine to work,
3. The LED element inspection according to claim 2, wherein when the bar code is read, the brightness inspection work machine, the color tone inspection work machine, and the printing work machine are controlled to be omitted. Taping device.

3. The LED element inspection taping device according to claim 2, wherein the plurality of working machines further include a lead frame storage working machine.

2. The LED element inspection taping apparatus according to claim 1, wherein the printing work machine prints the barcode on a predetermined position of the lead frame.

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