KR20090115534A - Phosphor dispenser for a chip led - Google Patents

Abstract

PURPOSE: A phosphor dispenser for a chip LED is provided to improve productivity and workability of a chip LED by supplying the phosphor precisely. CONSTITUTION: A phosphor receiver(40) receives the phosphor powder in a housing(30). A conduit opening and closing device(50) opens and closes an exhausting tube(41) of the phosphor receiver. An up/down unit(60) ascends and descends an amount of the phosphor discharged by the conduit opening and closing unit. A transfer unit(70) transfers the phosphor powder to a nozzle(80). The nozzle discharges the phosphor with the power type to a chip LED. The conduit opening and closing device is comprised of a conduit opening and closing actuator(51) and a conduit opening and closing rod(52).

Description

Fluorescent substance dispensing device {PHOSPHOR DISPENSER FOR A CHIP LED}

The present invention relates to a quantitative discharge device for fluorescent materials, and more particularly, to a quantitative discharge device for LEDs in which powder distribution is uniformly mixed with silicon in a chip LED and thus color distribution is uniform. .

Recently, with the development of the semiconductor industry, chip LEDs are being used as display devices or backlights.

A chip LED structure and a manufacturing method thereof are disclosed in Korean Patent Application Publication No. 10-2001-111231.

The source technology is that the molding of the resin mold is molding a domed resin mold around the chip by a potting method, but the shape is very limited and a certain shape cannot be formed. there was.

In particular, by forming a domed resin mold in the potting of liquid epoxy on top of the printed circuit board, the adhesive force with the printed circuit board in the planar state is separated, which is separated by long-term use due to thermal deformation. There is a disadvantage in that the productability is inferior because it cannot be enlarged.

In addition, it is disclosed in the 'chip LED package mold' of Republic of Korea Patent No. 10-562443.

Said source technology is to sandwich a plurality of chip LEDs on the lead frame between the upper mold and the lower mold formed with a plurality of mold cups to form a resin mold interposed in the state temporarily fixed with an adhesive and press the upper and lower mold at a constant pressure Liquid epoxy was injected into a plurality of mold cups through the injection hole formed in the upper mold in the state, and then molded and cured by integrally molding the body and the hemispherical resin mold, and cutting and processing to manufacture chip LEDs. .

However, this source technology is not only complicated manufacturing process but also complicated process of cutting and processing the array of chip LEDs, which increases the manufacturing cost. In particular, it is difficult to form the reflector of the chip due to the integral molding of the resin mold and the body. There was a downside.

In recent years, a chip is mounted on one end of the lead frame by foaming to form visible light of red, green, and blue, a reflective body having a groove-shaped reflective structure is formed, and the lead frame is cut to cut the exterior of the reflective body. Take out the lead terminals of the lead frame of the electrical connection; The chip protection resin mold was molded and cured by a potting method, and the chip LEDs arranged in a plurality of rows were separated into individual devices.

However, when the chip package is formed of a mixture of powdered fluorescent materials with silicon, the color distribution of the chip LEDs is not uniform because the mixing of the fluorescent material and the silicon is not uniform due to the viscosity of the silicon.

1A and 1B, when a powder-type fluorescent substance (Phosphor) is separately supplied to silicon, a quantitative actuator method of supplying a predetermined amount through a nozzle by rotating in a wheel shape was used.

However, grooves 4 of constant size are formed in the wheel 1 in order to supply a certain amount of the fluorescent substance P in powder form. Therefore, when the fluorescent substance in the form of powder is filled downward into the groove 4 through the discharge pipe 3 (see FIG. 1A), the wheel 1 is rotated and supplied to the chip LED through the nozzle 2 below. Since there is no means for controlling the supply amount of the fluorescent substance P in powder form according to the size of the chip LED, the wheel 1 itself having a groove for supplying a larger or smaller necessary amount of fluorescent substance is There was a disadvantage to be replaced.

Accordingly, an object of the present invention is to provide a device for quantitatively discharging a fluorescent substance that can control the supply amount of the fluorescent substance in powder form according to the size of the chip LED.

In order to achieve the above object, in the present invention, a fluorescent material accommodating part for accommodating the powder fluorescent material in the housing 30, a pipe opening and closing mechanism for opening and closing the discharge conduit of the fluorescent material accommodating part;

An up / down mechanism that is lifted up and down to control the amount of fluorescent material discharged by the pipe opening and closing mechanism,

A transfer mechanism for transferring a powder fluorescent substance of a required amount to a nozzle by an opening and closing operation of the pipe opening and closing mechanism and a lifting operation of an up / down mechanism;

It is characterized by arranging a nozzle for discharging the powdered fluorescent substance to the chip LED.

In particular, for the specific practice of the present invention, the pipeline opening and closing mechanism is a forward and backward operation by the operation of the pipeline opening and closing actuator and the pipeline opening and closing actuator to open and close the exhaust pipe located under the fluorescent material receiving portion to block or open the exhaust pipe. Consisting of pipeline opening and closing rod,

Up and down are positioned up and down by the up and down actuators of the up and down mechanisms so that the fluorescent material in the form of powder falls quantitatively under the discharge line through which the pipeline is opened by the opening and closing operation of the pipeline opening and closing rod. ,

The transfer mechanism is characterized by consisting of a transfer rod through which the transfer actuator and the receiving hole so as to transfer to the nozzle the required amount of fluorescent material (P) dropped down the discharge pipe by the up / download.

In this specific embodiment of the present invention, the discharge line is controlled to be moved upwards and upwards in the receiving hole penetrated by the transfer rod of the transfer mechanism before the fluorescent material is dropped by the operation of the up / down actuator of the up / down mechanism. The amount of fluorescent material can be controlled by the amount of synergy.

The fluorescent substance meter discharge device according to the present invention has the following effects.

That is, the present invention can supply the required amount of fluorescent material simply and accurately, thereby greatly improving the productivity and workability of the chip LED.

Hereinafter, the present invention will be described in detail.

A feature of the present invention is to configure a fluorescence material metering discharge device for quantitatively discharging powder fluorescent material of a required amount in a reflective body groove reflection structure of a plurality of chip LED materials arranged in a plurality.

In addition, the device for quantitatively discharging the fluorescent material may include a fluorescent material accommodating part for accommodating powder fluorescent material, a pipe opening / closing mechanism for opening and closing the discharge pipe of the fluorescent material accommodating part, and an amount of the fluorescent material discharged by the pipe opening and closing mechanism. Up and down mechanism to be moved up and down, the opening and closing operation of the pipe opening and closing mechanism and the transfer mechanism for transferring the desired amount of powder fluorescent material to the nozzle by the lifting operation of the up and down mechanism, and discharge the powder fluorescent material to the chip LED It is characterized by consisting of a nozzle.

2 to 11 are drawings according to an embodiment of the present invention, and with reference to these drawings, an embodiment of the present invention will be described.

Figure 2 is a perspective view showing that the fluorescent substance meter discharge device of the present invention is installed to supply the required amount of fluorescent material to the chip LED material, Figure 3 is a partial cross-sectional side view showing the main part of FIG.

4 is an enlarged cross-sectional view showing the main part of FIG.

The chip LED material 10 mounts a chip on a lead frame, arrays a plurality of reflecting bodies 20 having groove-shaped reflecting structures (reflecting grooves) 21, and cuts the lead frame to cut the reflecting bodies. The lead structure of the electrical connection is taken out from the outside, and is bent and molded at the bottom of the reflective body to produce a conventional structure.

A plurality of chip LED material (10) is supported and guided to the support (S), the upper portion of the chip LED material (10) is guided to the support (S) by the guide device (G) quantitative discharge device of the fluorescent substance of the present invention (10) ) Is a chip LED manufacturing equipment consisting of a dispenser (B) for dispensing silicon and a quantitative discharger (A) to which the present invention is applied to supply a required amount of fluorescent substance (P).

5 is an enlarged view of a fluorescent substance meter discharge device of the present invention.

The fluorescent substance metering and discharging device includes a fluorescent substance accommodating part 40 for accommodating powder fluorescent substance in the housing 30 and a pipe opening / closing mechanism 50 for opening and closing the discharge conduit 41 of the fluorescent substance accommodating part 40. And, up and down mechanism 60 to be moved up and down to adjust the amount of the fluorescent material discharged by the pipe opening and closing mechanism 50, and opening and closing operation and up / down mechanism 60 of the pipe opening and closing mechanism 50 And a conveyance mechanism 70 for conveying the desired amount of powdered fluorescent substance to the nozzle 80 by the elevating operation of the < RTI ID = 0.0 >), < / RTI >

The pipe opening / closing mechanism 50, the up / down mechanism 60, and the transfer mechanism 70 are disposed inside the housing 30 and electrically connected to a separate controller (not shown) to operate under control of the controller. It is supposed to.

In addition, the fluorescent substance accommodating part 40 accommodates the fluorescent substance P in powder form.

The pipeline opening and closing mechanism 50 operates forward and backward by operating the pipeline opening / closing actuator 51 and the pipeline opening / closing actuator 51 to open and close the discharge conduit 41 located under the fluorescent material accommodating portion 40. Is composed of a pipe opening and closing rod 52 to block or open the discharge pipe 41.

The up / down actuator of the up / down mechanism 60 so that the fluorescent substance P in powder form falls quantitatively below the discharge pipe 41 in which the pipe is opened by the opening / closing operation of the pipe opening / closing rod 52 ( Up / down 62 which is lifted up and down by 61 is located.

Then, the transfer mechanism 70 transfers the actuator 71 and the transfer rod 72 so as to transfer the required amount of fluorescent substance P dropped below the discharge passage 41 by the up / download 62 to the nozzle 80. It consists of.

At this time, the transfer rod 72 is passed through the receiving hole 73 for receiving the fluorescent material (P) to be transported, the up / down 62 of the up / down mechanism 60 is raised to this receiving hole In addition, the amount of the fluorescent substance P is controlled by the rising distance of the up / download 62.

The operation of the fluorescent substance metered discharge device of the present invention configured as described above will be described in detail with reference to FIGS. 6 to 11.

In the operation of the transfer actuator 71 in a state in which the discharge conduit 41, which is a passage falling down to the fluorescent substance accommodating portion 40, and the receiving hole 73 of the transfer rod 72 of the transfer mechanism 70 coincide with each other. By the retracted state.

At this time, the pipeline opening / closing mechanism 50 is also retracted by the operation of the pipeline actuator 51, and the pipeline opening / closing rod 52 is also retracted to open the discharge passage 41, but the up / down mechanism 60 By the operation of the up / down actuator 61, it moves upwards in the accommodation hole 73 of the said transfer rod 72, and the passage | pass of the discharge conduit 41 is blocked (refer FIG. 6).

In this state, when the moving amount of the fluorescent substance P is moved to a certain distance by the control operation of the transfer actuator 71 so that the required amount of the fluorescent substance P is filled in the receiving hole 73 of the transfer rod 72, the required amount of fluorescent substance P is discharged. It is filled by dropping into the accommodation hole 73 through the pipeline 41 (see Fig. 7).

In this state, the pipeline opening / closing actuator 51 of the pipeline opening / closing mechanism 50 is operated to move the pipeline opening / closing rod 52 forward to block the discharge passage 41 and to control the up / download 62. The lowering position of the receiving hole 73 is completely lowered so as not to interfere with the movement of the transfer rod 72, and the transfer rod 72 is controlled by the operation of the transfer mechanism 70. The fluorescent material P is discharged to the nozzle 80 as it is moved forward by () (see FIG. 8).

After discharging the required amount of fluorescent substance P through the nozzle 80, the transfer rod 72 is moved back to the rear by the operation of the transfer actuator 71, the fluorescent rod (P) in the transfer rod 72 ), The receiving hole 73 is dropped is located below the discharge pipe 41 (see Fig. 9). At this time, the discharge pipe 41 is still closed by the pipe opening / closing rod 52 of the pipe opening / closing mechanism 50, and the up / down mechanism 62 of the up / down mechanism 60 maintains its original lowered state. Will be in a state. However, the passage on the nozzle 80 side is closed by the transfer rod 72.

The up / download 62 is raised by the up / down actuator 61 (see Fig. 10) so that the required amount of phosphor P is received in the receiving hole 73 of the transfer rod 72, and then the pipeline opening / closing actuator The opening and closing rod 52 is retracted by the operation of the 51 to open the discharge conduit 41, and the fluorescent substance P is dropped and accommodated in the receiving hole 73 of the transfer rod 72 ( See FIG. 11).

The same operation is then performed sequentially and repeatedly as above. That is, the fluorescent substance (P) is dropped downward through the discharge pipe 41, the pipe opening and closing mechanism 50, the up / down mechanism 60 and the transfer mechanism 70 is linked to operate the required amount to the nozzle 80 Fluorescent substance (P) is discharged.

In the fluorescent substance meter discharge device of the present invention, the up / down mechanism 60 can accurately supply the required amount of the fluorescent substance P by the up / down movement so that the fluorescent substance of the required amount varies according to the size of the chip LED ( There is no need to replace the discharge device to supply P).

1A and 1B are schematic cross-sectional views showing a conventional fluorescent substance discharge device.

Figure 2 is a perspective view of the LED manufacturing equipment to which the fluorescent substance metering device of the present invention.

3 is a partial cross-sectional side view of FIG. 2;

4 is an enlarged cross-sectional view of a main part of FIG. 3;

Figure 5 is an enlarged cross-sectional view of the present expression.

6 to 11 is an enlarged view of the main portion of Figure 5, the operation state diagram according to the quantitative supply of fluorescent material.

** Explanation of symbols for main parts of drawings **

10: chip LED material 20: reflective body

21: Reflective groove 41: (fluorescent material) exhaust pipe

50: opening and closing mechanism 51: pipeline opening and closing actuator

52: pipeline opening and closing rod 60: up / down mechanism

61: Up / Down Actuator 62: Up / Down

70: transfer mechanism 71: transfer actuator

72: transfer rod 73: receiving hole

80: Nozzle

Claims (3)

In the fluorescent material quantitative supply device for supplying a quantitative supply of fluorescent material to the chip LED, A fluorescent substance accommodating part 40 for accommodating the powdered fluorescent substance in the housing 30, a pipe opening / closing mechanism 50 for opening and closing the discharge conduit 41 of the fluorescent substance accommodating part 40, and An up / down mechanism 60 which is lifted up and down to adjust the amount of fluorescent material discharged by the pipe opening / closing mechanism 50, Transfer mechanism 70 for transferring the required amount of powder fluorescent substance to the nozzle 80 by the opening and closing operation of the pipe opening and closing mechanism 50 and the lifting operation of the up / down mechanism 60, And a nozzle (80) for discharging the powdered fluorescent substance to the chip LED. The method of claim 1, The pipeline opening / closing mechanism 50 is operated forward and backward by the operation of the pipeline opening / closing actuator 51 and the pipeline opening / closing actuator 51 to open and close the discharge conduit 41 located under the fluorescent material accommodating portion 40. Consists of a pipe opening and closing rod 52 for blocking or opening the discharge pipe 41, The up / down actuator of the up / down mechanism 60 so that the fluorescent substance P in powder form falls quantitatively below the discharge pipe 41 in which the pipe is opened by the opening / closing operation of the pipe opening / closing rod 52 ( Up / down 62 is positioned to be moved up and down by 61), The transfer mechanism 70 transfers the actuator 71 and the receiving hole 73 to transfer the required amount of the fluorescent substance P dropped below the discharge passage 41 by the up / download 62 to the nozzle 80. Fluorescent substance quantitative supply device, characterized in that consisting of the through transfer rod 72. The method of claim 2, The discharge pipe 41 is a receiving hole 73 penetrated through the transfer rod 72 of the transfer mechanism 70 before the fluorescent material is dropped by the operation of the up / down actuator 61 of the up / down mechanism 60 Fluorescent substance quantitative supply apparatus, characterized in that the amount of the fluorescent material is adjusted by the amount of the up / download (62) that is controlled to move upward in the).

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